CN104059548A - Infrared barrier PVB (Poly Vinyl Butyral) film and preparation method thereof - Google Patents
Infrared barrier PVB (Poly Vinyl Butyral) film and preparation method thereof Download PDFInfo
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Abstract
The invention provides an infrared barrier PVB (Poly Vinyl Butyral) film and a preparation method thereof. The PVB film comprises the following raw materials in parts by weight: PVB resin powder, a plasticizer, a GTO nanometer dispersion liquid, an antioxygen and an ultraviolet absorbent, wherein the GTO nanometer dispersion liquid comprises an organic solvent, a dispersing agent and GTO nanometer powder. The preparation method comprises the steps: (1), mixing the nanometer GTO powder and the organic solvent, then coarsely grinding, then adding the dispersing agent, continuously grinding to prepare the nanometer GTO dispersion liquid; and (2), mixing and stirring the GTO nanometer dispersion liquid prepared in the step (1), the PVB resin powder, the plasticizer, the antioxygen and the ultraviolet absorbent, then charging in a double-screw extruder to obtain a PVB film, and cooling, sizing and coiling to obtain the infrared barrier PVB film. The infrared barrier PVB film provided by the invention has an infrared barrier rate high up to 95 percent.
Description
Technical field
The present invention relates to PVB film technologies field, refer to especially a kind of infrared barrier PVB film and preparation method thereof.
Background technology
Energy-conservation and environmental protection is the topic that the mankind pay close attention to always, the emphasis of energy-conserving and environment-protective industry Ye Shi world every country development.In hot summer, in automobile or indoor, people often need to use for a long time air-conditioning, and the use of air-conditioning can bring a large amount of energy consumptions and bring pollution to air.Summer, most heat all came from by the radiation of the sunlight of glass port with indoor in automobile.Therefore, if we can intercept these radiation in some technique means of employing on glass, can greatly reduce so the use of air-conditioning, save the energy, reduce and pollute.
The radiation of sunlight is mainly the hertzian wave of wavelength within the scope of 200-2500nm, and its medium wavelength is called ultraviolet ray between 200-380nm, and wavelength is called visible ray between 380-780nm, and wavelength is infrared rays between 780-2500nm.Ultraviolet light shared ratio in the energy of solar radiation is less, is about 5%, but because its wavelength is short, photon energy is larger, is easy to make in automotive trim and buildings the article accelerated deteriorations such as curtain, furniture.The large percentage that Infrared accounts in the energy of solar radiation, is about 50%, is to produce the principal element that heat energy raises room temp, and be therefore the major portion that needs obstruct.
The liquor-saturated butyral of polyethylene (PVB) is a kind of macromolecular material for laminated glass, has high deflection, high transparent, high bonding, shock-resistant, the anti-performance such as penetrate.It has good adhesiveproperties to glass, metal, timber, pottery, leather, fiber and other material, use it for after laminated glass, can make glass that fragmentation does not occur after being subject to foreign impacts and produce fragment to hurt sb.'s feelings, and improve the resistance to impact shock of glass, increase security.On high-grade automobile and Highrise buildings, use more.And usage quantity increases considerably in recent years.In view of the widespread use of pvb film in glass, if the nanoparticle with selectivity absorption sunlight is added in pvb film, can make PVB there is the function that intercepts sunlight medium ultraviolet and Infrared, greatly reduce the cost that uses plated film heat-protecting glass or pad pasting.
At at present energy-conservation and environmental protection industry development day by day fast under prerequisite.Low price, the heat-proof quality energy-conservation diaphragm of PVB excellent, asepsis environment-protecting will have good market outlook, and its widespread use simultaneously also can greatly reduce the use of the energy.
Heat-insulation transparent glass is mostly coated glass at present, at glass outer surface, cover the heat insulation high-molecular coating of one deck or pad pasting, these lagging material major parts are in polymkeric substance, to add the nanoparticle of infrared rays high reflection to realize obstruct infrared emanation, and the loaded down with trivial details and barriering effect of manufacturing process is not very desirable and the intensity difference of film forming caudacoria own; As Chinese patent 200610096832.3 discloses a kind of transparent heat-insulating film and preparation method thereof, adopt nano-indium stannum oxide (ITO) and nano titanium oxide and macromolecule resin (as aqueous polyurethane, epoxy resin or polyvinyl butyral acetal), coatings additive(s), thinner and solidifying agent blend, be coated on transparent film substrate and be heating and curing, make transparent heat insulation diaphragm, this film light transmission is good, infrared shielding rate reaches more than 60%, and uv absorption rate almost reaches 100%; Chinese patent CN101983983A discloses a kind of polyvinyl butyral acetal nano composite material that intercepts sunlight heat ray and preparation method thereof, first adopt sol-gel method to prepare the Doped Nanosize aluminum zinc oxide (AZO) that reflected infrared absorbs again ultraviolet, again with PVB blend, although cost has declined, effect of heat insulation is not very desirable; Chinese patent CN103044828A discloses a kind of pvb film with heat-proof quality and preparation method thereof, its method be with alcohols as solvent and add PVB resin-oatmeal and ITO powder preparative column nanoemulsions, then in twin screw extruder, carry out film forming.Its heat insulation PVB film barriering effect of preparing neither be very desirable.
Summary of the invention
The present invention proposes a kind of infrared barrier PVB film and preparation method thereof, has solved the poor technical problem of PVB film infrared barrier in prior art.
Technical scheme of the present invention is achieved in that
An infrared barrier PVB film, the formula of this PVB film is comprised of the raw material of following weight part:
Wherein GTO nano dispersion fluid is composed as follows:
Organic solvent 65-90 part
Dispersion agent 5-20 part and
GTO nano powder 5-20 part.
As preferred technical scheme, described softening agent is selected from one or more the mixture in triethyleneglycol ester, Tetraglycol 99 ester, sebate or phosphoric acid ester.Preferred described softening agent is triglycol two 2-ethylhexoates.
As preferred technical scheme, described oxidation inhibitor is selected from the mixture of phenols and phosphorous acid esters, wherein said phenols is selected from four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] a kind of in pentaerythritol ester, 2-methylene-bis (4-methyl-6-tert-butylphenol), the positive octadecanol ester of β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid; Described phosphorous acid esters are selected from a kind of in three [2,4-di-tert-butyl-phenyl] phosphorous acid ester, two stearyl alcohol season penta diphosphites, two (3,5-di-tert-butyl-phenyl) pentaerythritol diphosphites.
As preferred technical scheme, described ultraviolet absorbers is Benzotriazole Ultraviolet Stabilizer, is selected from 2-(2 ˊ-hydroxyl-5 ˊ-methyl)-benzotriazole, 2-(ˊ-tertiary butyl-5,2 ˊ-hydroxyl-3 ˊ-methyl) the chloro-benzotriazole of-5-, 2-(2 ˊ-hydroxyl-3 ˊ 5 ˊ-di-t-butyl) the chloro-benzotriazole of-5-, 2-(2 ˊ-hydroxyl-3 ˊ, 5 ˊ-bis-tert-pentyls)-benzotriazole, 2-(2 ˊ-hydroxyl-5 ˊ-tertiary octyl group)-benzotriazole a kind of.
As preferred technical scheme, described organic solvent is methyl alcohol, ethanol or triglycol two 2-ethylhexoates.
As preferred technical scheme, described dispersion agent is: one or more in BYK180, high molecular polymer polysiloxane solution HX-4030, Silane coupling reagent KH-570.
A preparation method for infrared barrier PVB film, comprising:
(1) mix nanometer GTO powder and organic solvent, roughly grind afterwards, and then add dispersion agent to continue to grind, make nanometer GTO dispersion liquid; Wherein the weight part of organic solvent, dispersion agent and GTO nano powder is:
Organic solvent 65-90 part
Dispersion agent 5-20 part and
GTO nano powder 5-20 part
(2) GTO nano dispersion fluid, PVB resin-oatmeal, softening agent, oxidation inhibitor and the UV light absorber that prepared by mix and blend step (1), put into twin screw extruder afterwards, obtains PVB film, through cooling and shaping, batches and be infrared barrier PVB film;
Wherein:
As preferred technical scheme, the length-to-diameter ratio 36:1 of described twin screw extruder.
As preferred technical scheme, described step (2) processing condition are: 150 ℃-180 ℃ of temperature, fusion plastification under the condition of screw speed 80RPM, by the T-shaped mould of opening 0.5mm-0.8mm.
Beneficial effect
(1) to have excellent mechanical property and superpower infrared barrier (infrared barrier rate is up to 99%) and reflection potential and transmittance good for the PVB film of infrared barrier of the present invention, can be directly used in heat insulation, the anti-ultraviolet of glass deep processing industry production, antitheft multifunctional safe glass, optimized Production Flow Chart, energy-saving safe has very strong marketing effect.
(2) the present invention evenly spreads to nanometer GTO in organic solvent system, has guaranteed that PVB film intercepts infrared consistence in each position.
(3) GTO nano dispersion fluid of the present invention can effectively improve the problem of layering and nanoparticle reunion.
Accompanying drawing explanation
In order to be illustrated more clearly in embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is infrared rays obstruct figure of the present invention.
Wherein:
1-comparative example 3,2-embodiment 2,3-embodiment 3,4-embodiment 4,5-comparative example 1.
Embodiment
Below the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The present invention is directed to the technical deficiency of heat-protecting glass material now, it is functional particles that nanometer GTO is selected in proposition, through organic solvent, dispersion agent and softening agent, adopt in-situ dispersion polymerization method to make after dispersion liquid, make the PVB film with remarkable infrared barrier effect extruding flow casting molding through twin screw extruder.The nano-solution that the method is made can effectively improve the problem of layering and nanoparticle reunion, it is good that the made PVB film with infrared barrier has excellent mechanical property and superpower infrared barrier and reflection potential and transmittance, can be directly used in heat insulation, the anti-ultraviolet of glass deep processing industry production, antitheft multifunctional safe glass, optimized Production Flow Chart, energy-saving safe has very strong marketing effect.
GTO is that the compound semiconductor that SnO2 doping cadmium obtains is a kind of novel nanometer novel material, from outward appearance, form, characteristic, these aspects of function, all same ATO, ITO powder are similar, but near infrared region particularly at wavelength to be less than 900nm region better than ATO, ITO powder heat-proof quality, ATO, ITO powder only reach 70% in near-infrared region heat-proof quality, and the heat-proof quality of GTO powder can reach 95%, barriering effect is better than ATO and ITO, and the aspects such as electroconductibility, the transparency, color all same ATO, ITO powder are similar.And the form of GTO powder nanometer particle is molectron unconventional, irregular variform.In solvent, do not can be uniformly dispersed sedimentation can occur.In invention process, research finds that with GTO, making dispersion liquid and PVB resin-oatmeal and softening agent finds that by test after twin-screw extrusion its mist degree is low, good weatherability, and effect of heat insulation is obviously due to ATO and ITO.
The heat insulation PVB film of the present invention can be used in building curtain wall and automotive field, makes the temperature in indoor or car be unlikely to rise very highly, has the effect that energy-saving cool-down and protection indoor article are not exposed to the sun.Not only save pad pasting cost but also play safe antitheft effect, meanwhile can also reduce power consumption energy-saving and emission-reduction.
The raw material of the use in following embodiment is all by commercially available purchase.
Embodiment 1
(1) prepare nanometer GTO dispersion liquid:
Get 7.8kg ethanol, 1.5kg nanometer GTO powder carry out 3-5 hour on ball mill corase grind after being pre-mixed, then add 0.7kg Silane coupling reagent KH-570 on ball mill, to continue to grind 15-18 hour, make nanometer GTO dispersion liquid.
(2) by 100kgPVB resin-oatmeal, 0.1kg antioxidant mixture is (by 66.7g tetra-[β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and 33.3g tri-[2,4-di-tert-butyl-phenyl] phosphorous acid ester composition), 0.05kg UV light absorber 2-(2 ˊ-hydroxyl-5 ˊ-tertiary octyl group)-benzotriazole, put in stirrer, under 800RPM rotating speed, high-speed stirring is 5 minutes.The amount of controlling water coolant makes in whipping process material temperature at 40 ℃ to 50 ℃.The last nanometer GTO dispersion liquid 0.5kg that adds softening agent triglycol two 2-ethylhexoate 28kg and step (1) to prepare under the rotating speed of 20RPM, stirring at low speed 5 to 10 minutes.Then above-mentioned compound is put into the twin screw extruder of length-to-diameter ratio 36:1 in the mode of metering, processing temperature is set between 150 ℃ to 180 ℃, fusion plastification under the condition of screw speed 80RPM, by the T-shaped mould of opening 0.5mm-0.8mm, form the PVB film of even thickness, through cooling and shaping, batch as finished product.
Embodiment 2
(1) prepare nanometer GTO dispersion liquid:
Get 7kg triglycol two 2-ethylhexoates, 2kg nanometer GTO powder carry out 3-5 hour on ball mill corase grind after being pre-mixed, then add 1kg Silane coupling reagent KH-570 on ball mill, to continue to grind 15-18 hour, make nanometer GTO dispersion liquid.
(2) by 100kgPVB resin-oatmeal, 0.1kg antioxidant mixture is (by 66.7g tetra-[β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and 33.3g tri-[2,4-di-tert-butyl-phenyl] phosphorous acid ester composition), 0.05kg UV light absorber 2-(2 ˊ-hydroxyl-5 ˊ-tertiary octyl group)-benzotriazole, put in stirrer, under 800RPM rotating speed, high-speed stirring is 5 minutes.The amount of controlling water coolant makes in whipping process material temperature at 40 ℃ to 50 ℃.The last nanometer GTO dispersion liquid 0.8kg that adds softening agent triglycol two 2-ethylhexoate 28kg and step (1) to prepare under the rotating speed of 20RPM, stirring at low speed 5 to 10 minutes.Then above-mentioned compound is put into the twin screw extruder of length-to-diameter ratio 36:1 in the mode of metering, processing temperature is set between 150 ℃ to 180 ℃, fusion plastification under the condition of screw speed 80RPM, by the T-shaped mould of opening 0.5mm-0.8mm, form the PVB film of even thickness, through cooling and shaping, batch as finished product.
Embodiment 3
(1) prepare nanometer GTO dispersion liquid:
Get 7kg triglycol two 2-ethylhexoates, 2kg nanometer GTO powder carry out 3-5 hour on ball mill corase grind after being pre-mixed, then add 1kg Silane coupling reagent KH-570 on ball mill, to continue to grind 15-18 hour, make nanometer GTO dispersion liquid.
(2) by 100kgPVB resin-oatmeal, 0.1kg antioxidant mixture is (by 66.7g tetra-[β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and 33.3g tri-[2,4-di-tert-butyl-phenyl] phosphorous acid ester composition), 0.05kg UV light absorber 2-(2 ˊ-hydroxyl-5 ˊ-tertiary octyl group)-benzotriazole, put in stirrer, under 800RPM rotating speed, high-speed stirring is 5 minutes.The amount of controlling water coolant makes in whipping process material temperature at 40 ℃ to 50 ℃.The last nanometer GTO dispersion liquid 1.0kg that adds softening agent triglycol two 2-ethylhexoate 28kg and step (1) to prepare under the rotating speed of 20RPM, stirring at low speed 5 to 10 minutes.Then above-mentioned compound is put into the twin screw extruder of length-to-diameter ratio 36:1 in the mode of metering, processing temperature is set between 150 ℃ to 180 ℃, fusion plastification under the condition of screw speed 80RPM, by the T-shaped mould of opening 0.5mm-0.8mm, form the PVB film of even thickness, through cooling and shaping, batch as finished product.
Embodiment 4
(1) prepare nanometer GTO dispersion liquid:
Get 6.5kg triglycol two 2-ethylhexoates, 2kg nanometer GTO powder carry out 3-5 hour on ball mill corase grind after being pre-mixed, add again 2kg high molecular polymer polysiloxane solution HX-4030 on ball mill, to continue to grind 15-18 hour, make nanometer GTO dispersion liquid.
(2) by 100kgPVB resin-oatmeal, 0.1kg antioxidant mixture is (by 66.7g tetra-[β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and 33.3g tri-[2,4-di-tert-butyl-phenyl] phosphorous acid ester composition), 0.05kg UV light absorber 2-(2 ˊ-hydroxyl-3 ˊ, 5 ˊ-bis-tert-pentyls)-benzotriazole, put in stirrer, under 800RPM rotating speed, high-speed stirring is 5 minutes.The amount of controlling water coolant makes in whipping process material temperature at 40 ℃ to 50 ℃.The last nanometer GTO dispersion liquid 1kg that adds softening agent sebate 20kg and step (1) to prepare under the rotating speed of 20RPM, stirring at low speed 5 to 10 minutes.Then above-mentioned compound is put into the twin screw extruder of length-to-diameter ratio 36:1 in the mode of metering, processing temperature is set between 150 ℃ to 180 ℃, fusion plastification under the condition of screw speed 80RPM, by the T-shaped mould of opening 0.5mm-0.8mm, form the PVB film of even thickness, through cooling and shaping, batch as finished product.
Comparative example 1
By 52kgPVB resin-oatmeal, 0.1kg antioxidant mixture is (by 66.7g tetra-[β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and 33.3g tri-[2,4-di-tert-butyl-phenyl] phosphorous acid ester composition), 0.05kg UV light absorber 2-(2 ˊ-hydroxyl-5 ˊ-tertiary octyl group)-benzotriazole, put in stirrer, under 800RPM rotating speed, high-speed stirring is 5 minutes.The amount of controlling water coolant makes in whipping process material temperature at 40 ℃ to 50 ℃.The last softening agent triglycol two 2-ethylhexoate 18kg, stirring at low speed 5 to 10 minutes of adding under the rotating speed of 20RPM.Then above-mentioned compound is put into the twin screw extruder of length-to-diameter ratio 36:1 in the mode of metering, processing temperature is set between 150 ℃ to 180 ℃, fusion plastification under the condition of screw speed 80RPM, by the T-shaped mould of opening 0.5mm-0.8mm, form the PVB film of even thickness, through cooling and shaping, batch as finished product.
Comparative example 2
(1) prepare nanometer GTO dispersion liquid:
Get 9kg triglycol two 2-ethylhexoates, 0.5kg nanometer GTO powder carry out 3-5 hour on ball mill corase grind after being pre-mixed, then add 1.5kgBYK180 on ball mill, to continue to grind 15-18 hour, make nanometer GTO dispersion liquid.
(2) by 100kgPVB resin-oatmeal, 0.5kg antioxidant mixture is (by 300g tetra-[β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and 200g tri-[2,4-di-tert-butyl-phenyl] phosphorous acid ester composition), 0.2kg UV light absorber 2-(2 ˊ-hydroxyl-5 ˊ-methyl)-benzotriazole, put in stirrer, under 800RPM rotating speed, high-speed stirring is 5 minutes.The amount of controlling water coolant makes in whipping process material temperature at 40 ℃ to 50 ℃.The last nanometer GTO dispersion liquid 0.2kg that adds softening agent phosphoric acid ester 40kg and step (1) to prepare under the rotating speed of 20RPM, stirring at low speed 5 to 10 minutes.Then above-mentioned compound is put into the twin screw extruder of length-to-diameter ratio 36:1 in the mode of metering, processing temperature is set between 150 ℃ to 180 ℃, fusion plastification under the condition of screw speed 80RPM, by the T-shaped mould of opening 0.5mm-0.8mm, form the PVB film of even thickness, through cooling and shaping, batch as finished product.
Comparative example 3
(1) prepare nanometer GTO dispersion liquid:
Get 8.6kg methyl alcohol, 1kg nanometer GTO powder carry out 3-5 hour on ball mill corase grind after being pre-mixed, then add 0.4kg Silane coupling reagent KH-570 on ball mill, to continue to grind 15-18 hour, make nanometer GTO dispersion liquid.
(2) by 100kgPVB resin-oatmeal, 0.1kg antioxidant mixture is (by 66.7g tetra-[β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and 33.3g tri-[2,4-di-tert-butyl-phenyl] phosphorous acid ester composition), 0.05kg UV light absorber 2-(2 ˊ-hydroxyl-5 ˊ-tertiary octyl group)-benzotriazole, put in stirrer, under 800RPM rotating speed, high-speed stirring is 5 minutes.The amount of controlling water coolant makes in whipping process material temperature at 40 ℃ to 50 ℃.The nanometer GTO dispersion liquid 0.3kg that finally adds softening agent triglycol two 2-ethylhexoate 28kg and step (1) to prepare under 20RPM rotating speed, stirring at low speed 5 to 10 minutes.Then above-mentioned compound is put into the twin screw extruder of length-to-diameter ratio 36:1 in the mode of metering, processing temperature is set between 150 ℃ to 180 ℃, fusion plastification under the condition of screw speed 80RPM, by the T-shaped mould of opening 0.5mm-0.8mm, form the PVB film of even thickness, through cooling and shaping, batch as finished product.
Following table is the Data Comparison of embodiment 1,2,3, comparative example 1 and the 3 PVB intermediate coats of producing:
From table one test data, can find out that the interpolation of nanometer GTO dispersion liquid has guaranteed tensile strength and the elongation at break of PVB film, from table one, it can also be seen that and with alcoholic solvent, can make as dispersion liquid the PVB film mist degree of making increase.
By embodiment 1, 2, 3, the PVB film that comparative example 1 and 3 makes closes after sheet is made laminated glass, with ultraviolet-visible-near infrared spectrometer, sample is measured to (model is U.S. Po Jin-Ai Ermo (PerkinElmer) Lambda900 of company), and compare with the laminated glass that the common pvb film of comparative example is made, the infrared rays blocking-up situation result of observation to wavelength 900～2500nm, the results are shown in Figure 1, wherein X-coordinate represents ultrared wavelength, ordinate zou is transmitance, as can be seen from Figure 1, the sample that has added nanometer GTO solution has obvious obstruct to the infrared rays of 900～2500nm, rejection rate increases with the increase of GTO concentration.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. an infrared barrier PVB film, is characterized in that, the formula of this PVB film is comprised of the raw material of following weight part:
Wherein GTO nano dispersion fluid is composed as follows:
Organic solvent 65-90 part
Dispersion agent 5-20 part and
GTO nano powder 5-20 part.
2. a kind of infrared barrier PVB film according to claim 1, is characterized in that, described softening agent is selected from one or more the mixture in triethyleneglycol ester, Tetraglycol 99 ester, sebate or phosphoric acid ester.
3. a kind of infrared barrier PVB film according to claim 2, is characterized in that, described softening agent is triglycol two 2-ethylhexoates.
4. a kind of infrared barrier PVB film according to claim 1, it is characterized in that, described oxidation inhibitor is selected from the mixture of phenols and phosphorous acid esters, wherein said phenols is selected from four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] a kind of in pentaerythritol ester, 2-methylene-bis (4-methyl-6-tert-butylphenol), the positive octadecanol ester of β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid; Described phosphorous acid esters are selected from a kind of in three [2,4-di-tert-butyl-phenyl] phosphorous acid ester, two stearyl alcohol season penta diphosphites, two (3,5-di-tert-butyl-phenyl) pentaerythritol diphosphites.
5. a kind of infrared barrier PVB film according to claim 1, it is characterized in that, described ultraviolet absorbers is Benzotriazole Ultraviolet Stabilizer, is selected from 2-(2 ˊ-hydroxyl-5 ˊ-methyl)-benzotriazole, 2-(ˊ-tertiary butyl-5,2 ˊ-hydroxyl-3 ˊ-methyl) the chloro-benzotriazole of-5-, 2-(2 ˊ-hydroxyl-3 ˊ 5 ˊ-di-t-butyl) the chloro-benzotriazole of-5-, 2-(2 ˊ-hydroxyl-3 ˊ, 5 ˊ-bis-tert-pentyls)-benzotriazole, 2-(2 ˊ-hydroxyl-5 ˊ-tertiary octyl group)-benzotriazole a kind of.
6. a kind of infrared barrier PVB film according to claim 1, is characterized in that, described organic solvent is methyl alcohol, ethanol or triglycol two 2-ethylhexoates.
7. a kind of infrared barrier PVB film according to claim 1, is characterized in that, described dispersion agent is one or more in BYK180, high molecular polymer polysiloxane solution HX-4030, Silane coupling reagent KH-570.
8. according to a preparation method for infrared barrier PVB film described in the arbitrary claim of claim 1-7, comprising:
(1) mix nanometer GTO powder and organic solvent, roughly grind afterwards, and then add dispersion agent to continue to grind, make nanometer GTO dispersion liquid;
(2) GTO nano dispersion fluid, PVB resin-oatmeal, softening agent, oxidation inhibitor and the UV light absorber that prepared by mix and blend step (1), put into twin screw extruder afterwards, obtains PVB film, through cooling and shaping, batches and be infrared barrier PVB film.
9. the preparation method of a kind of infrared barrier PVB film according to claim 8, is characterized in that, the length-to-diameter ratio 36:1 of described twin screw extruder.
10. the preparation method of a kind of infrared barrier PVB film according to claim 8, it is characterized in that, described step (2) processing condition are: 150 ℃-180 ℃ of temperature, fusion plastification under the condition of screw speed 80RPM, by the T-shaped mould of opening 0.5mm-0.8mm.
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