JP6131969B2 - Polycarbonate resin laminate, incombustible lighting cover and lighting equipment - Google Patents

Description

  The present invention relates to a polycarbonate resin laminate, a nonflammable lighting cover, and a lighting device.

In order to prevent fires in railway vehicles, the Ministry of Land, Infrastructure, Transport and Tourism has traditionally defined flammability standards for railway vehicle materials by classifying them into non-flammable, extremely incombustible, and incombustible. Recently, a ministerial ordinance dated December 27, 2004 (JNR No. 124) issued “Technical Standards for Railways” for the purpose of strengthening combustion regulations for ceiling parts inside railway vehicles that are the cause of fire spread in railway fires. The revision of “Interpretation standards for ministerial ordinances, etc.” has been issued and implemented.
In this flammability standard, the ceiling part inside the railway vehicle, including lighting, which is considered to be the cause of fire spread, has been changed from conventional flame retardant to non-flammable, and the requirements for non-flammable certification include melting dripping resistance and calorific value during combustion. Added.
In addition, conventionally, an acrylic resin or a polycarbonate resin imparted with flame retardancy has been used as a lighting cover because it is excellent in light transmittance and is a lightweight material and requires secondary molding. However, lighting covers made of these resins satisfy the conventional flame retardant standard, but have a problem that the non-flammable standard is not satisfied.
As a lighting cover excellent in incombustibility, a light diffusing material made of glass fiber fabric and fluororesin has also been proposed (see, for example, Patent Document 1). However, this light diffusing material has a problem that it does not satisfy the incombustibility standard for railcar materials. Moreover, although the heat-resistant light-diffusion sheet for lighting fixtures which consists of a glass cloth sheet and a fluororesin sheet | seat is disclosed (for example, refer patent document 2), judgment of nonflammability is judged only by self-flammability. There is a problem that the incombustibility standard for railway vehicle materials is not satisfied.

JP 2001-055646 A JP 2002-221609 A

  The present invention provides a polycarbonate resin laminate using a polycarbonate resin that achieves both a non-flammability and a good appearance without occurrence of interference fringes.

The above object is achieved by the following [1] to [8].
[1] A polycarbonate resin laminate comprising a first glass cloth layer containing a thermosetting resin, a first polycarbonate resin layer, and a second glass cloth layer,
The thermosetting resin is a condensation-reactive silicone resin, and the weight per unit area of the first glass cloth layer is larger than the weight per unit area of the second glass cloth layer, and the thermosetting resin A polycarbonate resin laminate, wherein the first glass cloth layer containing is an outermost layer.
[2] The polycarbonate resin laminate according to [1], wherein the weight per unit area of the first glass cloth layer is 100 g / m ² or more and 220 g / m ² or less.
[3] The polycarbonate resin laminate according to [1] or [2], wherein the weight per unit area of the second glass cloth layer is 50 g / m ² or more and 110 g / m ² or less.
[4] Ratio of weight per unit area of the first glass cloth layer to weight per unit area of the second glass cloth layer: [weight per unit area of the first glass cloth layer / second The weight per unit area of the glass cloth layer is 1.1 to 5.0, and the polycarbonate resin laminate according to any one of [1] to [3].
[5] The polycarbonate resin laminate according to any one of [1] to [4], wherein the polycarbonate resin laminate has a transmittance of 20% to 65%.
[6] The polycarbonate resin laminate according to any one of [1] to [5], wherein the polycarbonate resin laminate has a thickness of 0.05 mm to 2.0 mm.
[7] A nonflammable lighting cover manufactured using the polycarbonate resin laminate according to any one of [1] to [6].
[8] A lighting device manufactured using the nonflammable lighting cover according to claim 7.

  ADVANTAGE OF THE INVENTION According to this invention, the favorable external appearance which does not generate | occur | produce an interference fringe, and a nonflammability can be made compatible, and the polycarbonate resin laminated body which does not spread during a flame contact is obtained.

FIG. 1 is a perspective view of a flammability test apparatus used in ignition / flame, smoke generation, and carbonization tests in Examples.

Hereinafter, the polycarbonate resin laminate of the present invention will be described in detail based on preferred embodiments.
The polycarbonate resin laminate of the present invention is a polycarbonate resin laminate comprising a first glass cloth layer containing a thermosetting resin, a first polycarbonate resin layer, and a second glass cloth layer, The thermosetting resin is a condensation-reactive silicone resin, and the weight per unit area of the first glass cloth layer is larger than the weight per unit area of the second glass cloth layer, and the thermosetting resin contains the thermosetting resin. One glass cloth layer is the outermost layer.
Hereinafter, each material which comprises a polycarbonate resin laminated body is demonstrated in detail.
<Condensation reactive silicone resin>
Examples of the thermosetting resin used in the first glass cloth layer and / or the second glass cloth layer include condensation-reactive silicone resins having an effect of developing nonflammability.
The condensation reactive silicone resin is one of the main materials contained in the resin laminate.
The condensation-reactive silicone resin used in the present invention is not particularly limited as long as it is a silicone resin (polysiloxane resin) having a condensation-reactive group. For example, a silane compound represented by the following formula (1) and / or a partial condensation thereof Product (hereinafter referred to as silane compound (1)), silane compound represented by the following formula (2) and / or partial condensate thereof (hereinafter referred to as silane compound (2)), presence of organic solvent, organic base and water What is obtained by heating and hydrolyzing and condensing below is mentioned.

(Chemical formula 1)
X
｜
_{^{(R 1) n -Si- (Y1}} ) 3-n (1)

[In Formula (1), X is a monovalent organic group having one or more epoxy groups, and Y1 is a chlorine atom, a bromine atom, an iodine atom, or a linear, branched or cyclic group having 1 to 20 carbon atoms. An alkoxy group, R1 is a hydrogen atom, a fluorine atom, a linear, branched or cyclic alkyl group having 1 to 20 carbon atoms, a linear, branched or cyclic substituted alkyl group having 1 to 20 carbon atoms, A linear, branched or cyclic alkenyl group having 2 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms or an aralkyl group having 7 to 20 carbon atoms, and n is an integer of 0 to 2. ]

(Chemical formula 2)

_{^{(R 2) m -Si- (Y}} 2) 4-m (2)

[In Formula (2), Y2 is a chlorine atom, a bromine atom, an iodine atom or a linear, branched or cyclic alkoxy group having 1 to 20 carbon atoms, and R2 is a hydrogen atom, a fluorine atom, or a carbon number 1 to 1 20 linear, branched or cyclic alkyl groups, linear, branched or cyclic substituted alkyl groups having 1 to 20 carbon atoms, linear, branched or cyclic alkenyl groups having 2 to 20 carbon atoms , An aryl group having 6 to 20 carbon atoms or an aralkyl group having 7 to 20 carbon atoms, and m is an integer of 0 to 3. ]

In the formula (1), the monovalent organic group having one or more epoxy groups of X is not particularly limited, and examples thereof include γ-glycidoxypropyl group, 3,4-epoxycyclopentyl group, 3 , 4-epoxycyclohexyl group, (3,4-epoxycyclopentyl) methyl group, (3,4-epoxycyclohexyl) methyl group, 2- (3,4-epoxycyclopentyl) ethyl group, 2- (3,4-epoxy) (Cyclohexyl) ethyl group, 2- (3,4-epoxycyclopentyl) propyl group, 2- (3,4-epoxycyclohexyl) propyl group, 3- (3,4-epoxycyclopentyl) propyl group, 3- (3,4 -C5-C20 groups, such as an epoxy cyclohexyl) propyl group, can be mentioned.
Of these monovalent organic groups having one or more epoxy groups, a γ-glycidoxypropyl group, 2- (3,4-epoxycyclohexyl) ethyl group, and the like are preferable, and 2- (3,4-epoxycyclohexyl) is preferable. The ethyl group is particularly preferred.
In Formula (1), Y1 is a chlorine atom, a bromine atom, an iodine atom, or a linear, branched or cyclic alkoxy group having 1 to 20 carbon atoms. These groups generate a silanol group in the course of hydrolysis and condensation reaction in the presence of an organic base and water, and cause a condensation reaction between the silanol groups, or the silanol group and chlorine atom, bromine atom, iodine It is a group that forms a siloxane bond by causing a condensation reaction with an atom or a silicon atom having the alkoxy group.
In the formula (1), examples of the linear, branched or cyclic alkoxy group having 1 to 20 carbon atoms of Y1 include a methoxy group, an ethoxy group, an n-propoxy group, an i-propoxy group, and an n-butoxy group. I-butoxy group, sec-butoxy group, t-butoxy group, n-pentyloxy group, n-hexyloxy group, cyclopentyloxy group, cyclohexyloxy group and the like.
Y1 in Formula (1) is preferably a chlorine atom, a methoxy group, an ethoxy group, or the like.
In the formula (1), examples of the linear, branched or cyclic alkyl group having 1 to 20 carbon atoms represented by R1 include a methyl group, an ethyl group, an n-propyl group, an i-propyl group, and an n-butyl group. I-butyl group, sec-butyl group, t-butyl group, n-pentyl group, n-hexyl group, cyclopentyl group, cyclohexyl group and the like.

Examples of the linear, branched or cyclic substituted alkyl group having 1 to 20 carbon atoms for R1 include a fluoroalkyl group, a chloroalkyl group, a hydroxyalkyl group, a (meth) acryloxyalkyl group and a mercaptoalkyl group. Can be mentioned. Specific examples thereof include, for example, a fluoromethyl group, a trifluoromethyl group, a 2-fluoroethyl group, a (trifluoromethyl) methyl group, a pentafluoroethyl group, a 3-fluoro-n-propyl group, and 2- (trimethyl). Fluoromethyl) ethyl group, (pentafluoroethyl) methyl group, heptafluoro-n-propyl group, 4-fluoro-n-butyl group, 3- (trifluoromethyl) -n-propyl group, 2- (pentafluoroethyl) ) Ethyl group, (heptafluoro-n-propyl) methyl group, nonafluoro-n-butyl group, 5-fluoro-n-pentyl group, 4- (trifluoromethyl) -n-butyl group, 3- (pentafluoroethyl) ) -N-propyl group, 2- (heptafluoro-n-propyl) ethyl group, (nonafluoro-n-butyl) methyl group, Fluoro-n-pentyl group, 6-fluoro-n-hexyl group, 5- (trifluoromethyl) -n-pentyl group, 4- (pentafluoroethyl) -n-butyl group, 3- (heptafluoro-n- Propyl) -n-propyl group, 2- (nonafluoro-n-butyl) ethyl group, (perfluoro-n-pentyl) methyl group, perfluoro-n-hexyl group, 7- (trifluoromethyl) -n-heptyl Group, 6- (pentafluoroethyl) -n-hexyl group, 5- (heptafluoro-n-propyl) -n-pentyl group, 4- (nonafluoro-n-butyl) -n-butyl group, 3- (par Fluoro-n-pentyl) -n-propyl group, 2- (perfluoro-n-hexyl) ethyl group, (perfluoro-n-heptyl) methyl group, perfluoro-n-octyl 9- (trifluoromethyl) -n-nonyl group, 8- (pentafluoroethyl) -n-octyl group, 7- (heptafluoro-n-propyl) -n-heptyl group, 6- (nonafluoro-n- (Butyl) -n-hexyl group, 5- (perfluoro-n-pentyl) -n-pentyl group, 4- (perfluoro-n-hexyl) -n-butyl group, 3- (perfluoro-n-heptyl) -N-propyl group, 2- (perfluoro-n-octyl) ethyl group, (perfluoro-n-nonyl) methyl group, perfluoro-n-decyl group, 4-fluorocyclopentyl group, 4-fluorocyclohexyl group, etc. And a chloromethyl group, 2-chloroethyl group, 3-chloro-n-propyl group, 4-chloro-n-butyl group, 3-chlorocyclopentyl group, Examples include 4-chlorocyclohexyl group, hydroxymethyl group, 2-hydroxyethyl group, 3-hydroxycyclopentyl group, 4-hydroxycyclohexyl group, 3- (meth) acryloxypropyl group, 3-mercaptopropyl group and the like.

Examples of the linear, branched or cyclic alkenyl group having 2 to 20 carbon atoms of R1 include, for example, vinyl group, 1-methylvinyl group, 1-propenyl group, allyl group (2-propenyl group), 2 -Methyl-2-propenyl group, 1-butenyl group, 2-butenyl group, 3-butenyl group, 3-cyclopentenyl group, 3-cyclohexenyl group and the like can be mentioned.
Examples of the aryl group having 6 to 20 carbon atoms of R1 include a phenyl group, o-tolyl group, m-tolyl group, p-tolyl group, 2,3-xylyl group, 2,4-xylyl group, 2 , 5-xylyl group, 2,6-xylyl group, 3,4-xylyl group, 3,5-xylyl group, 1-naphthyl group and the like.
Moreover, as a C7-C20 aralkyl group of R1, a benzyl group, a phenethyl group, etc. can be mentioned, for example. R1 in Formula (1) is preferably a methyl group, an ethyl group, or the like.

Specific examples of the silane compound (1) include n = 0 compounds such as γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltriethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltri Methoxysilane, 2- (3,4-epoxycyclohexyl) ethyltriethoxysilane, etc .;
As compounds of n = 1, (γ-glycidoxypropyl) (methyl) dimethoxysilane, (γ-glycidoxypropyl) (ethyl) dimethoxysilane, (γ-glycidoxypropyl) (methyl) diethoxysilane, (Γ-glycidoxypropyl) (ethyl) diethoxysilane, [2- (3,4-epoxycyclohexyl) ethyl] (methyl) dimethoxysilane, [2- (3,4-epoxycyclohexyl) ethyl] (ethyl) Dimethoxysilane, [2- (3,4-epoxycyclohexyl) ethyl] (methyl) diethoxysilane, [2- (3,4-epoxycyclohexyl) ethyl] (ethyl) diethoxysilane, and the like;
As compounds of n = 2, (γ-glycidoxypropyl) (methoxy) dimethylsilane, (γ-glycidoxypropyl) (methoxy) diethylsilane, (γ-glycidoxypropyl) (ethoxy) dimethylsilane, ( γ-glycidoxypropyl) (ethoxy) diethylsilane, [2- (3,4-epoxycyclohexyl) ethyl] (methoxy) dimethylsilane, [2- (3,4-epoxycyclohexyl) ethyl] (methoxy) diethylsilane ,
Examples include [2- (3,4-epoxycyclohexyl) ethyl] (ethoxy) dimethylsilane, [2- (3,4-epoxycyclohexyl) ethyl] (ethoxy) diethylsilane, and the like.

Examples of the partial condensate of the silane compound (1) include trade names such as ES1001N, ES1002T, ES1023 (manufactured by Shin-Etsu Silicone Co., Ltd.); methylsilicate MSEP2 (manufactured by Mitsubishi Chemical Corporation), and the like. it can.
In this invention, a silane compound (1) and its partial condensate can be used individually or in mixture of 2 or more types, respectively.

In said formula (2), Y2 shows a chlorine atom, a bromine atom, an iodine atom, or a C1-C20 linear, branched or cyclic alkoxy group. These groups generate a silanol group in the course of hydrolysis and condensation reaction in the presence of an organic base and water, and cause a condensation reaction between the silanol groups, or the silanol group and chlorine atom, bromine atom, iodine It is a group that forms a siloxane bond by causing a condensation reaction with an atom or a silicon atom having the alkoxy group.
In the formula (2), examples of the linear, branched or cyclic alkoxy group having 1 to 20 carbon atoms of Y2 include the same groups as those exemplified for the corresponding group of Y1 in the formula (1). Can be mentioned.
As Y2 in Formula (2), a chlorine atom, a methoxy group, an ethoxy group, an n-propoxy group, an i-propoxy group, an n-butoxy group, a sec-butoxy group, a t-butoxy group, and the like are preferable.

In the formula (2), a linear, branched or cyclic alkyl group having 1 to 20 carbon atoms, a linear, branched or cyclic substituted alkyl group having 1 to 20 carbon atoms, a carbon number of 2 to 20 Examples of the linear, branched or cyclic alkenyl group, the aryl group having 6 to 20 carbon atoms, and the aralkyl group having 7 to 20 carbon atoms are exemplified for groups corresponding to R1 in the formula (1). Examples thereof include the same groups as those described above.
As R2 in Formula (2), fluorine atom, methyl group, ethyl group, 2- (trifluoromethyl) ethyl group, 2- (perfluoro-n-hexyl) ethyl group, 2- (perfluoro-n-octyl) ) An ethyl group, hydroxymethyl group, 2-hydroxyethyl group, 3- (meth) acryloxypropyl group, 3-mercaptopropyl group, vinyl group, allyl group, phenyl group and the like are preferable.

As a specific example of the silane compound (2),
As compounds of m = 0, tetrachlorosilane, tetramethoxysilane, tetraethoxysilane, tetra-n-propoxysilane, tetra-i-propoxysilane, tetra-n-butoxysilane, tetra-sec-butoxysilane and the like;
As compounds of m = 1, trichlorosilane, trimethoxysilane, triethoxysilane, tri-n-propoxysilane, tri-i-propoxysilane, tri-n-butoxysilane, tri-sec-butoxysilane,
Fluorotrichlorosilane, fluorotrimethoxysilane, fluorotriethoxysilane, fluorotri-n-propoxysilane, fluorotri-i-propoxysilane, fluorotri-n-butoxysilane, fluorotri-sec-butoxysilane,
Methyltrichlorosilane, methyltrimethoxysilane, methyltriethoxysilane, methyltri-n-propoxysilane, methyltri-i-propoxysilane, methyltri-n-butoxysilane, methyltri-sec-butoxysilane,
2- (trifluoromethyl) ethyltrichlorosilane, 2- (trifluoromethyl) ethyltrimethoxysilane, 2- (trifluoromethyl) ethyltriethoxysilane, 2- (trifluoromethyl) ethyltri-n-propoxysilane, 2- (trifluoromethyl) ethyltri-i-propoxysilane, 2- (trifluoromethyl) ethyltri-n-butoxysilane, 2- (trifluoromethyl) ethyltri-sec-butoxysilane,
2- (perfluoro-n-hexyl) ethyltrichlorosilane, 2- (perfluoro-n-hexyl) ethyltrimethoxysilane, 2- (perfluoro-n-hexyl) ethyltriethoxysilane, 2- (perfluoro- n-hexyl) ethyltri-n-propoxysilane, 2- (perfluoro-n-hexyl) ethyltri-i-propoxysilane, 2- (perfluoro-n-hexyl) ethyltri-n-butoxysilane, 2- (perfluoro -N-hexyl) ethyltri-sec-butoxysilane,
2- (perfluoro-n-octyl) ethyltrichlorosilane, 2- (perfluoro-n-octyl) ethyltrimethoxysilane, 2- (perfluoro-n-octyl) ethyltriethoxysilane, 2- (perfluoro- n-octyl) ethyltri-n-propoxysilane, 2- (perfluoro-n-octyl) ethyltri-i-propoxysilane, 2- (perfluoro-n-octyl) ethyltri-n-butoxysilane, 2- (perfluoro) -N-octyl) ethyltri-sec-butoxysilane,
Hydroxymethyltrichlorosilane, hydroxymethyltrimethoxysilane, hydroxyethyltrimethoxysilane, hydroxymethyltri-n-propoxysilane, hydroxymethyltri-i-propoxysilane, hydroxymethyltri-n-butoxysilane, hydroxymethyltri-sec- Butoxysilane,
3- (meth) acryloxypropyltrichlorosilane, 3- (meth) acryloxypropyltrimethoxysilane, 3- (meth) acryloxypropyltriethoxysilane, 3- (meth) acryloxypropyltri-n-propoxysilane, 3- (meth) acryloxypropyltri-i-propoxysilane, 3- (meth) acryloxypropyltri-n-butoxysilane, 3- (meth) acryloxypropyltri-sec-butoxysilane,
3-mercaptopropyltrichlorosilane, 3-mercaptopropyltrimethoxysilane, 3-mercaptopropyltriethoxysilane, 3-mercaptopropyltri-n-propoxysilane, 3-mercaptopropyltri-i-propoxysilane, 3-mercaptopropyltri -N-butoxysilane, 3-mercaptopropyltri-sec-butoxysilane,
Vinyltrichlorosilane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltri-n-propoxysilane, vinyltri-i-propoxysilane, vinyltri-n-butoxysilane, vinyltri-sec-butoxysilane,
Allyltrichlorosilane, allyltrimethoxysilane, allyltriethoxysilane, allyltri-n-propoxysilane, allyltri-i-propoxysilane, allyltri-n-butoxysilane, allyltri-sec-butoxysilane,
Phenyltrichlorosilane, phenyltrimethoxysilane, phenyltriethoxysilane, phenyltri-n-propoxysilane, phenyltri-i-propoxysilane, phenyltri-n-butoxysilane, phenyltri-sec-butoxysilane, etc .:
As compounds of m = 2, methyldichlorosilane, methyldimethoxysilane, methyldiethoxysilane, methyldi-n-propoxysilane, methyldi-i-propoxysilane, methyldi-n-butoxysilane, methyldi-sec-butoxysilane,
Dimethyldichlorosilane, dimethyldimethoxysilane, dimethyldiethoxysilane, dimethyldi-n-propoxysilane, dimethyldi-i-propoxysilane, dimethyldi-n-butoxysilane, dimethyldi-sec-butoxysilane,
(Methyl) [2- (perfluoro-n-octyl) ethyl] dichlorosilane, (methyl) [2- (perfluoro-n-octyl) ethyl] dimethoxysilane, (methyl) [2- (perfluoro-n- Octyl) ethyl] dimethoxysilane, (methyl) [2- (perfluoro-n-octyl) ethyl] di-n-propoxysilane, (methyl) [2- (perfluoro-n-octyl) ethyl] di-i -Propoxysilane, (methyl) [2- (perfluoro-n-octyl) ethyl] di-n-butoxysilane, (methyl) [2- (perfluoro-n-octyl) ethyl] di-sec-butoxysilane,
(Methyl) (γ-glycidoxypropyl) dichlorosilane, (methyl) (γ-glycidoxypropyl) dimethoxysilane, (methyl) (γ-glycidoxypropyl) diethoxysilane, (methyl) (γ-glycyl Sidoxypropyl) di-n-propoxysilane, (methyl) (γ-glycidoxypropyl) di-i-propoxysilane, (methyl) (γ-glycidoxypropyl) di-n-butoxysilane, (methyl) (Γ-glycidoxypropyl) di-sec-butoxysilane,
(Methyl) (3-mercaptopropyl) dichlorosilane, (methyl) (3-mercaptopropyl) dimethoxysilane, (methyl) (3-mercaptopropyl) diethoxysilane, (methyl) (3-mercaptopropyl) di-n- Propoxysilane, (methyl) (3-mercaptopropyl) di-i-propoxysilane, (methyl) (3-mercaptopropyl) di-n-butoxysilane, (methyl) (3-mercaptopropyl) di-sec-butoxysilane ,
(Methyl) (vinyl) dichlorosilane, (methyl) (vinyl) dimethoxysilane, (methyl) (vinyl) diethoxysilane, (methyl) (vinyl) di-n-propoxysilane, (methyl) (vinyl) di-i -Propoxysilane, (methyl) (vinyl) di-n-butoxysilane, (methyl) (vinyl) di-sec-butoxysilane,
Divinyldichlorosilane, divinyldimethoxysilane, divinyldiethoxysilane, divinyldi-n-propoxysilane, divinyldi-i-propoxysilane, divinyldi-n-butoxysilane, divinyldi-sec-butoxysilane,
Diphenyldichlorosilane, diphenyldimethoxysilane, diphenyldiethoxysilane, diphenyldi-n-propoxysilane, diphenyldi-i-propoxysilane, diphenyldi-n-butoxysilane, diphenyldi-sec-butoxysilane and the like;
As compounds of m = 3, chlorodimethylsilane, methoxydimethylsilane, ethoxydimethylsilane,
Chlorotrimethylsilane, bromotrimethylsilane, iodotrimethylsilane, methoxytrimethylsilane, ethoxytrimethylsilane, n-propoxytrimethylsilane, i-propoxytrimethylsilane, n-butoxytrimethylsilane, sec-butoxytrimethylsilane, t-butoxytrimethylsilane ,
(Chloro) (vinyl) dimethylsilane, (methoxy) (vinyl) dimethylsilane, (ethoxy) (vinyl) dimethylsilane,
(Chloro) (methyl) diphenylsilane, (methoxy) (methyl) diphenylsilane, (ethoxy) (methyl) diphenylsilane and the like can be exemplified.

  Among these silane compounds (2), tetramethoxysilane, tetraethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, 3- (meth) acryloxypropyltrimethoxysilane, 3- (meth) acryloxypropyltriethoxy Silane, vinyltrimethoxysilane, vinyltriethoxysilane, allyltrimethoxysilane, allyltriethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane and the like are preferable.

Moreover, as a partial condensate of a silane compound (2), it is a brand name, for example, KC-89, KC-89S, X-21-3153, X-21-5586, X-21-5847, X-21- 5848, X-22-160AS, X-40-2308, X-40-2651, X-40-2655A, X-40-2671, X-41-1053, X-41-1056, X-41-1805, X-41-1810, KR220L, KR242A, KR271, KR282, KR300, KR311, KR401N, KR500, KR510, KR5206, KR5230, (manufactured by Shin-Etsu Silicone); Glass Resin (manufactured by Showa Denko KK); SH804, SH805, SH806A, SH840, SR2400, SR2402, SR2405, SR240 , SR2410, SR2411, SR2416, SR2
420, SR2440 (above, manufactured by Toray Dow Corning Silicone Co., Ltd.); FZ3711, FZ3722 (above, manufactured by Nihon Unicar Co., Ltd.); DMS-S12, DMS-S15, DMS-S21, DMS-S27, DMS- S31, DMS-S32, DMS-S33, DMS-S35, DMS-S38, DMS-S42, DMS-S45, DMS-S51, DMS-227, PDS-0332, PDS-1615, PDS-9931, XMS-5025 ( Above, manufactured by Chisso Corporation); methyl silicate MS51, methyl silicate MS56 (above, manufactured by Mitsubishi Chemical Corporation); ethyl silicate 28, ethyl silicate 40, ethyl silicate 48 (above, manufactured by Colcoat Corporation); GR100, GR650, GR908, GR950 (above, Showa Denden Co., Ltd.), and the like.

In this invention, a silane compound (2) and its partial condensate can be used individually or in mixture of 2 or more types, respectively.
The polyorganosiloxane (α) can be produced by heating and hydrolyzing and condensing the silane compound (1) and the silane compound (2) in the presence of an organic solvent, an organic base and water. preferable.
As the organic solvent, for example, hydrocarbons, ketones, esters, ethers, alcohols and the like can be used. A solvent that does not mix uniformly with water is preferred.

  Examples of the hydrocarbon include toluene and xylene; Examples of the ketone include methyl ethyl ketone, methyl isobutyl ketone, methyl n-amyl ketone, diethyl ketone, and cyclohexanone; Examples of the ester include ethyl acetate and n-acetate. Butyl, i-amyl acetate, propylene glycol monomethyl ether acetate, 3-methoxybutyl acetate, ethyl lactate and the like; Examples of the ether include ethylene glycol dimethyl ether, ethylene glycol diethyl ether, tetrahydrofuran and dioxane; Examples of the alcohol include 1-hexanol, 4-methyl-2-pentanol, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol mono n- propyl ether, ethylene glycol monobutyl -n- butyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol mono -n- propyl ether may be mentioned, respectively.

These organic solvents can be used alone or in admixture of two or more.
The amount of the organic solvent used is preferably 10 to 10,000 parts by weight, more preferably 50 to 5,000 parts by weight with respect to 100 parts by weight of the total silane compound.
Examples of the organic base include primary and secondary organic amines such as ethylamine and diethylamine; tertiary organic amines such as triethylamine, tri-n-propylamine, tri-n-butylamine, pyridine and 4-dimethylaminopyridine; A quaternary organic amine such as tetramethylammonium hydroxide can be used.
Among these organic bases, tertiary organic amines such as triethylamine, tri-n-propylamine, tri-n-butylamine, pyridine and 4-dimethylaminopyridine; quaternary organic amines such as tetramethylammonium hydroxide preferable.

When producing polyorganosiloxane (α), by using an organic base as a catalyst, the desired polyorganosiloxane (α) can be produced at a high hydrolysis / condensation rate without causing side reactions such as ring opening of epoxy groups. ) Can be obtained, so that a composition having good production stability and good curability can be obtained.
The amount of the organic amine used varies depending on the reaction conditions such as the type and temperature of the organic amine, and is not particularly limited. However, the amount is preferably about 0.01 to 3 moles, more preferably 0.05 to the total silane compound. About 1 mol. In addition, the amount used in the case of using an organic base other than the organic amines is sufficient in an amount substantially equivalent to that of the organic amine.
The amount of water used in producing the polyorganosiloxane (α) is preferably about 0.5 to 100 times mol, more preferably about 1 to 30 times mol, with respect to the total silane compound.
In the hydrolysis and condensation reaction in producing the polyorganosiloxane (α), the silane compound (1) and the silane compound (2) and the like are dissolved in an organic solvent, and this solution is mixed with an organic base and water. Subsequently, it can implement by heating by an oil bath etc., for example.

During the hydrolysis and condensation reaction, the heating temperature is preferably 130 ° C. or lower, more preferably 40 to 120 ° C., preferably about 0.5 to 12 hours, more preferably about 1 to 8 hours. During the heating operation, the mixed solution may be stirred or left under reflux.
After completion of the reaction, the organic solvent layer is separated from the reaction solution and preferably washed with water. In this cleaning, the cleaning operation is facilitated by cleaning with water containing a small amount of salt, for example, an aqueous ammonium nitrate solution of about 0.2% by weight. Washing is performed until the water after washing becomes neutral, and then the organic solvent layer is dried with a desiccant such as anhydrous calcium sulfate or molecular sieves if necessary, and then concentrated to obtain the desired polyorganosiloxane. (Α) can be obtained.
The polyorganosiloxane (α) thus obtained has few remaining hydrolyzable groups, such as alkoxy groups and silanol groups, so it can be stored at room temperature without gelation for more than 1 month without being diluted with a solvent. it can. If desired, the silanol groups can be further reduced by trimethylsilylating the remaining silanol groups with hexamethyldisilazane or the like after completion of the reaction.

In addition, the hydrolysis and condensation reaction in the presence of an organic base and water does not cause side reactions such as a ring-opening reaction or a polymerization reaction of an epoxy group in the silane compound (1), and the metal-containing catalyst. There is an advantage that metal impurities such as sodium, potassium, platinum, ruthenium and the like in the polyorganosiloxane (α) are reduced as compared with the case of using.
The weight average molecular weight (hereinafter referred to as “Mw”) of the polyorganosiloxane (α) in terms of polystyrene is preferably 500 to 1,000,000, more preferably 1,000 to 100,000.
The polyorganosiloxane (α) has an epoxy equivalent of 1,600 g / mol or less, preferably 160 to 900 g / mol, and more preferably 180 to 600 g / mol. When the epoxy equivalent exceeds 1,600 g / mol, the resulting polyorganosiloxane has problems such as reduced heat resistance and coloring.

In the polyorganosiloxane (α), the content of the structural unit derived from the silane compound (2) is preferably 5 mol% or more of the total structural units. If the content of the structural unit is less than 5 mol% of the total structural units, the resulting polyorganosiloxane may have problems such as reduced heat resistance and coloring.
Further, in the polyorganosiloxane (α), the ratio of silicon atoms bonded to three or more oxygen atoms to all silicon atoms is preferably 10% or more. When the ratio of silicon atoms bonded to three or more oxygen atoms to the total silicon atoms is less than 10%, the hardness of the cured product obtained from each composition for optical semiconductor adhesives described later and the adhesion to the electrodes May cause problems.
The polyorganosiloxane (α) can be used very suitably as a main component in each composition for optical semiconductor adhesives described below, and can be used alone or mixed with a general polyorganosiloxane, for example, a molded product, It is also useful as a film, laminate material, paint and the like. Polyorganosiloxane (α) can be used alone or in admixture of two or more.

<Glass cloth>
Glass cloth is one of the main materials contained in the resin laminate, and has a function of improving the nonflammability and strength of the resin laminate.

It does not specifically limit as a glass cloth sheet used for the 1st and 2nd glass cloth layer of this invention, A well-known glass fiber sheet, for example, a glass cloth sheet, can be used. The glass fiber as the material is not particularly limited, and may be any of general-purpose alkali-free glass fiber, acid-resistant alkali-containing glass fiber, high-strength / high-modulus glass fiber, alkali-resistant glass fiber, and the like. . The method of weaving the glass fiber fabric may be any of plain weave, twill weave, satin weave, oblique weave, warp weave and the like. The diameter of the filament which comprises glass fiber is 1 micrometer or more and 20 micrometers or less, for example.
Further, the weight per unit area (weight per unit area) of the glass cloth sheet is, for example, 10 g / m ² or more and 300 g / m ² or less, preferably 50 g, from the viewpoint of durability and impregnation property of the condensation reactive silicone resin. / M ² or more and 220 g / m ² or less.
The thickness of the glass cloth is not particularly limited and can be appropriately selected depending on the application. For example, it is 0.001 mm or more and 1 mm or less, preferably 0.01 mm or more and 0.5 mm or less, and more preferably 0.05 mm or more and 0.3 mm or less. By setting the thickness of the glass cloth within the above range, nonflammability can be achieved and translucency can be ensured.
The glass fiber may be composed of either a long fiber or a short fiber, and when the glass fiber is a long fiber, it can be used by aligning and hardening an appropriate number, It can be used as a yarn that is twisted and joined together, that is, a spun yarn.
The count of the glass fiber used is usually in the range of 1 to 1000 tex, preferably 5 to 850 tex, more preferably 5 to 200 tex, and still more preferably 5 to 150 tex. Moreover, when using a long fiber as said glass fiber, it is preferable that this glass fiber is twisted. Although there is no restriction | limiting in particular in the number of twists, it is good to use a thing about 20 to 200 times per 100 cm. The twist direction may be either a known right twist (S twist) or a left twist (Z twist). Moreover, as a form of a twisted yarn, any of a single twisted yarn, various twisted yarns, bitco various twisted yarns, strong twisted yarn, wall twisted yarn, and piece twisted yarn may be sufficient.
The density of the glass cloth is preferably about 10 to 80/25 mm for both warp and weft, more preferably about 20 to 60/25 mm. By setting the density of the glass cloth within the above range, sufficient tensile strength, flexibility and flexibility can be obtained.

The weight per unit area of the first glass cloth layer is preferably 100 g / m ² or more and 220 g / m ² or less, more preferably 110 g / m ² or more and 220 g / m ² or less. Nonflammability can be achieved by setting the weight per unit area of the first glass cloth layer within the above range.
The weight per unit area of the second glass cloth layer is preferably 50 g / m ² or more and 110 g / m ² or less, more preferably 60 g / m ² or more and 100 g / m ² or less. By setting the weight per unit area of the second glass cloth layer within the above range, generation of interference fringes can be suppressed in appearance and nonflammability can be achieved.
The weight per unit area of the first glass cloth layer is preferably larger than the weight per unit area of the second glass cloth layer. Ratio of weight per unit area of the first glass cloth layer to weight per unit area of the second glass cloth layer: [weight per unit area of the first glass cloth layer / of the second glass cloth layer The weight per unit area] is preferably larger than 1, more preferably 1.1 or more and 5.0 or less, and particularly preferably 1.1 or more and 4.0 or less. By setting [weight per unit area of the first glass cloth layer / weight per unit area of the second glass cloth layer] within the above range, occurrence of interference fringes is suppressed in appearance, and nonflammability is reduced. Can be achieved.

The glass cloth layer containing the condensation-reactive silicone resin used in the present invention is formed by coating the silicone resin composition containing the condensation-reactive silicone resin on at least one surface of the glass cloth sheet, or the above-mentioned It can be produced by impregnating a glass cloth sheet with a silicone resin composition containing the condensation reactive silicone resin.
The method for applying the silicone resin composition containing the condensation-reactive silicone resin is not particularly limited. For example, by a known application method such as kiss coating, gravure coating, bar coating, spray coating, knife coating, or wire coating, A glass cloth containing a silicone resin composed of a silicone resin on one side or both sides of the glass cloth by applying directly, forming a coating film, and drying, for example, at a temperature of about 80 ° C. to 150 ° C. A layer can be obtained. The thickness of the glass cloth layer containing the silicone resin is, for example, 1 μm to 200 μm, preferably 5 μm to 100 μm.

<Polycarbonate resin>
The polycarbonate resin is one of the main materials contained in the resin laminate, and has a function of improving the transparency, strength, and impact resistance of the resin laminate.
The polycarbonate resin used in the present invention can be obtained, for example, by an interfacial polymerization method in which an aromatic dihydroxy compound or a small amount of a polyhydroxy compound is reacted with phosgene. Examples of the aromatic dihydroxy compound include bisphenol A synthesized from bisphenol and acetone. In addition, other bisphenol A can be produced by a transesterification method, a pyridine method or the like using a raw material.
Also exemplified are polyester carbonates obtained by copolymerization of bisphenol A and dicarboxylic acid derivatives such as tere (iso) phthalic acid dichloride, bisphenol A derivatives such as those obtained by polymerization of tetramethylbisphenol A and the like. can do.
The molecular weight of the polycarbonate resin is preferably a molecular weight that provides a viscosity capable of producing a sheet by ordinary extrusion molding. Specifically, the weight average molecular weight is preferably 13,000 to 45,000, more preferably 16000 to 38000, More preferably, it is 18000 or more and 30000 or less. By setting the molecular weight of the polycarbonate resin within the above range, fluidity and extrusion moldability are improved, and the impact resistance of the polycarbonate resin laminate can be improved.
Also, as long as the properties of the polycarbonate resin are not impaired, for example, stabilizers, lubricants, processing aids, pigments, antistatic agents, antioxidants, neutralizers, ultraviolet absorbers, dispersants, thickeners, light diffusing agents. These ingredients may be appropriately blended.

The polycarbonate resin laminate of the present invention comprises at least three layers of a first glass cloth layer containing a curable resin, a first polycarbonate resin layer, and a second glass cloth layer. The weight per unit area of the glass cloth layer is larger than the weight per unit area of the second glass cloth layer, and the first glass cloth layer containing the thermosetting resin may be the outermost layer. Or a fourth glass cloth layer and / or a second or third polycarbonate resin layer.
The third and fourth glass cloth layers may have the same configuration as the first glass cloth layer, and may be the same as or different from the first or second glass cloth layer. From the viewpoint of suppressing the occurrence of interference fringes in the appearance of the resin laminate, it is preferably different from the first or second glass cloth layer.
The second and third polycarbonate resin layers may have the same configuration as the first polycarbonate resin layer, and may be the same as or different from the first polycarbonate resin layer.
By setting it as the above structures, it becomes excellent in external appearances, such as intensity | strength, a moldability, and a curvature.

The thickness of the polycarbonate resin laminate is preferably 0.05 mm or more and 2.0 mm or less. More preferably, they are 0.08 mm or more and 1.8 mm or less, More preferably, they are 0.10 mm or more and 1.6 mm or less. By setting the thickness of the polycarbonate resin laminate within the above range, the resin laminate is excellent in nonflammability, appearance, and weight reduction.
The transmittance of the polycarbonate resin laminate is preferably 20% or more and 65% or less, more preferably 22% or more and 63% or less, and still more preferably 25% or more and 60% or less. By setting the transmittance of the polycarbonate resin laminate within the above range, the appearance of the resin laminate is excellent without making the shape of the light source visible.

The polycarbonate resin laminate as described above can be manufactured using, for example, the following manufacturing method.
<Method for producing polycarbonate resin laminate>
The first glass cloth layer containing the thermosetting resin, the first polycarbonate resin layer, and the second glass cloth layer containing the thermosetting resin are superposed and pressure-bonded in this order. As the pressure-bonding method, a known method can be adopted, and examples thereof include thermocompression bonding (thermal lamination), and a hot roll, a hot press, and the like can be used.

The polycarbonate resin laminate of the present invention can be suitably used as an interior member illuminating device for a transport device such as a railway vehicle, an aircraft, an automobile, a ship, an elevator, and an escalator, particularly as a lighting cover.
A lighting device according to the present invention is a lighting device using the above polycarbonate resin laminate, and includes a light source that generates light used for illumination, the light source that covers the light source, and the polycarbonate resin laminate. Thus, it has a feature that it is excellent in appearance and can secure illuminance without making the shape of the light source visible.

  Hereinafter, the present invention will be described more specifically with reference to examples and comparative examples. However, the present invention is not limited to these.

Example 1
[1] Production of silicone resin In a reaction vessel equipped with a stirrer, thermometer, dropping funnel, reflux condenser, 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane 60 g, dimethyldimethoxysilane 40 g, methyl isobutyl ketone 500 g and 10 g of triethylamine were added and mixed at room temperature.
Next, 100 g of deionized water was dropped from the dropping funnel over 30 minutes, and the mixture was reacted at 80 ° C. for 6 hours while mixing under reflux. After completion of the reaction, the organic layer was taken out and washed with a 0.2 wt% ammonium nitrate aqueous solution until the water after washing became neutral, and then the solvent and water were distilled off under reduced pressure to give a condensation-reactive silicone resin A. Was obtained as a clear liquid.
A dipping method in which a glass cloth sheet (manufactured by Nittobo, weight per unit area (weight per unit area): 110 g / m ² , thickness: 0.1 mm) is immersed in the prepared condensation-reactive silicone resin A and pulled up at a constant speed. The silicone resin was adhered by. Then, it baked on 200 degreeC conditions for 1 hour, and obtained the 1st glass cloth layer (a) impregnated with the condensation reactive silicone resin A.

[2] Production of polycarbonate resin laminate As the first polycarbonate resin layer, polycarbonate resin (manufactured by Mitsubishi Engineering Plastics Co., Ltd., product name: E-2000, weight average molecular weight: 27000), single screw extruder, and T-die The first polycarbonate resin layer (b) having a sheet thickness of 0.40 mm was obtained by extrusion into a sheet using a polishing roll or the like.
Second glass cloth layer (c) (manufactured by Nittobo, weight per unit area (weight per unit area): 60 g
/ m ² , thickness: 0.05 mm).
The first glass cloth layer (a), the first polycarbonate resin layer (b), and the second glass cloth layer (c) are superposed in this order, and this is sandwiched between press plates. Using a machine, the lower and upper plates are heated to about 180 ° C, and the polycarbonate resin is pressed and melted with the heat to be integrated and then rapidly cooled, so that the length is 400 mm, the width is 400 mm, and the thickness is 0.50 mm. A polycarbonate resin laminate was obtained.

(Example 2)
A polycarbonate resin laminate having a thickness of 0.60 mm was obtained in the same manner as in Example 1 except that the material constituting the polycarbonate resin laminate was changed to that shown in Table 1.

(Example 3)
A polycarbonate resin laminate having a thickness of 0.40 mm was obtained in the same manner as in Example 1 except that the material constituting the polycarbonate resin laminate was changed to that shown in Table 1.

Example 4
A polycarbonate resin laminate having a thickness of 0.45 mm was obtained in the same manner as in Example 1 except that the material constituting the polycarbonate resin laminate was changed to that shown in Table 1.

(Example 5)
First glass cloth layer (a) of Example 1, first polycarbonate resin layer (thickness 0.15 mm), and second glass cloth layer (manufactured by Nittobo, weight per unit area (weight per unit area)) : 60 g / m ² , thickness: 0.05 mm) and a second polycarbonate resin layer (thickness: 0.15 mm), and a thickness of 0.45 mm in the same manner as in Example 1 except that the layers were laminated in this order. A polycarbonate resin laminate was obtained.

(Example 6)
The first glass cloth layer (a) of Example 1, the first polycarbonate resin layer (thickness 0.25 mm), and the second glass cloth layer (manufactured by Nittobo, weight per unit area (weight per unit area)) : 60 g / m ² , thickness: 0.05 mm), second polycarbonate resin layer (thickness 0.25 mm), and third glass cloth layer (manufactured by Nittobo, weight per unit area (weight per unit area)) : 150 g / m ² , thickness: 0.05 mm) was obtained in the same manner as in Example 1 to obtain a polycarbonate resin laminate having a thickness of 0.70 mm.

(Example 7)
A polycarbonate resin laminate having a thickness of 0.50 mm was obtained in the same manner as in Example 6 except that the material constituting the polycarbonate resin laminate was changed to that shown in Table 2.

(Example 8)
A polycarbonate resin laminate having a thickness of 0.60 mm was obtained in the same manner as in Example 6 except that the material constituting the polycarbonate resin laminate was changed to that shown in Table 2.

Example 9
Condensation-reactive silicone resin in the same manner as in Example 1 using 60 g of 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 40 g of dimethyldimethoxysilane, 40 g of methyltrimethoxysilane, 500 g of methylisobutylketone, and 10 g of triethylamine B was obtained as a clear liquid.
A polycarbonate resin laminate having a thickness of 0.60 mm was obtained in the same manner as in Example 7 except that the condensation-reactive silicone resin A of Example 7 was changed to the above-described condensation-reactive silicone resin B.

(Comparative Example 1)
The weight (weight per unit area) of the glass cloth layer used in the first glass cloth layer (a) of Example 1 was changed (manufactured by Nittobo, weight per unit area (weight per unit area): 40 g / m.
² and a thickness of 0.1 mm), a polycarbonate resin laminate having a thickness of 0.50 mm was obtained in the same manner as in Example 1.

(Comparative Example 2)
The weight per unit area (weight per unit area) of the glass cloth layer used for the first glass cloth layer (a) in Example 1 was changed (manufactured by Nittobo, weight per unit area (weight per unit area): 40 g / m ^2.
, Thickness: 0.1 mm), a polycarbonate resin laminate having a thickness of 0.50 mm was obtained in the same manner as in Example 1 except that the condensation-reactive silicone resin A was not immersed.

(Comparative Example 3)
The weight per unit area (weight per unit area) of the glass cloth layer used for the first glass cloth layer (a) in Example 1 was changed (manufactured by Nittobo, weight per unit area (weight per unit area): 40 g / m ^2.
, Thickness: 0.1 mm), instead of condensation-reactive silicone resin A, as polytetrafluoroethylene resin C, it was immersed in an aqueous dispersion of polytetrafluoroethylene (manufactured by Daikin Industries, Polyflon PTFE D-210C), Thereafter, a polycarbonate resin laminate having a thickness of 0.50 mm was obtained in the same manner as in Example 1 except that drying at 100 ° C. and further baking for 5 minutes at 380 ° C. were performed.

(Comparative Example 4)
It consists only of the first polycarbonate resin layer (thickness: 0.5 mm).

  The following evaluation was performed about the polycarbonate resin laminated body of each Example and each comparative example which were obtained as mentioned above.

[3] Evaluation of polycarbonate resin laminate [Evaluation items]
[3.1] Evaluation of total light transmittance Polycarbonate of each example and each comparative example according to JIS K7361 using a haze meter (trade name “HM-150” manufactured by Murakami Color Research Laboratory Co., Ltd.) The total light transmittance (%) of the resin laminate was measured.

[3.2] Evaluation of interference fringes The polycarbonate resin laminates of Examples and Comparative Examples were held over fluorescent lamps to visually check for the presence of interference fringes, and evaluated according to the following criteria. Levels 1 and 2 were judged good.
Level 1: No interference fringes are observed.
Level 2: Although some interference fringes are observed, there is no practical problem.
Level 3: Interference fringes of a practical level are recognized.

[3.3] Flammability evaluation (ignition / flame, smoke generation, carbonization test)
Using the combustion test apparatus shown in FIG. 1, a combustion test was conducted in accordance with a combustion test (general material; 45 ° alcohol test of non-metallic materials for railway vehicles) of the Japan Railway Vehicle Machinery Association. As shown in FIG. 1, 11 is a test piece (182 mm × 257 mm), 12 is an alcohol container (iron 17.5φ × 7.1, 0.8 t), a container cradle using a low thermal conductivity such as cork. 13 was shown.
The distance from the bottom surface of the test piece to the bottom surface of the container is 25.4 mm (1 inch).
The polycarbonate resin laminate (test piece) produced above is held at a 45 ° inclination in the combustion test apparatus of FIG. 1, and the center of the bottom of the fuel container (alcohol container) is 25 vertically below the center of the lower surface of the test piece. The fuel container was placed on a cork stand so that the distance was 4 mm, 0.5 cc of alcohol was placed in the fuel container, ignited, and left until the fuel was burned out. The specimen was ignited and flamed, and the presence or state of carbonization was visually confirmed and evaluated according to the following criteria.
The required standards for non-combustibility conformance in the test method for railway vehicle material tests are as follows.
<1> During combustion ・ Ignition / flame: No ignition or flame.
-Smoke volume: Less than or equal to ("Slight" is a nonflammable category.)
<2> After Combustion • Carbonization size: The carbonization length is 100 mm or less.
-Deformation size: The maximum deformation length is 100 mm or less.
・ Afterflame / Dust: There should be no residual flame or dust after the fire source is extinguished.
-Melt dripping property: There is no melt dripping and smoothness is maintained.

[3.4] Evaluation of Appearance Using the polycarbonate resin laminate of each example and each comparative example, an illumination device was manufactured as an illumination cover. As the appearance, the visibility of the light source was confirmed, and when the shape of the light source was not visible, the appearance was good: ◯, and when the shape of the light source was visible, the appearance was poor: x.
The above evaluation results are shown in Tables 1 and 2.

  As shown in Tables 1 and 2, the polycarbonate resin laminate in each example resulted in a good appearance with no incombustibility and no interference fringes.

  On the other hand, the polycarbonate resin laminate in the comparative example could not obtain a result satisfying both the incombustibility and the appearance.

11 Test piece (polycarbonate resin laminate)
12 Alcohol container (fuel container)
13 Container stand

Claims (3)

A polycarbonate resin laminate comprising a first glass cloth layer containing a thermosetting resin, a first polycarbonate resin layer, and a second glass cloth layer,
The thermosetting resin is a condensation-reactive silicone resin;
The weight per unit area of the first glass cloth layer is greater than the weight per unit area of the second glass cloth layer,
The first glass cloth layer containing the thermosetting resin is the outermost layer ,
The weight per unit area of the first glass cloth layer is 100 g / m ² or more and 220 g / m ² or less,
The weight per unit area of the second glass cloth layer is 50 g / m ² or more and 110 g / m ² or less,
Ratio of the weight per unit area of the first glass cloth layer to the weight per unit area of the second glass cloth layer: [weight per unit area of the first glass cloth layer / second glass cloth The weight per unit area of the layer] is 1.1 or more and 5.0 or less,
A polycarbonate resin laminate, wherein the polycarbonate resin laminate has a thickness of 0.40 mm to 2.0 mm .   A cover for nonflammable lighting produced using the polycarbonate resin laminate according to claim 1. A lighting device manufactured using the nonflammable lighting cover according to claim 2.