KR101596545B1 - Chips for Native Rock Having Multicolor Layer and Native Rock Including Same - Google Patents

Abstract

The reinforced natural stone chip composition according to the present invention comprises 75 to 82% by weight of the silica-containing compound (A) and 18 to 25% by weight of the unsaturated polyester resin (B), and 100 parts by weight of the unsaturated polyester resin (B) (C) 0.5 to 4.5 parts by weight of a pigment, pearl or a mixture thereof, and has a polychromatic layer. When applied to reinforced natural stone, the surface roughness of the periphery of the chip can be prevented have.

Description

{Chips for Native Rock Having Multicolor Layer and Native Rock Including Same}

The present invention relates to a chip composition for reinforced gemstones and fortified gemstones comprising the same. More specifically, the present invention relates to a chip composition for reinforced natural stone having a polychromatic layer and excellent surface roughness and hardness, and a reinforced natural stone including the same.

Natural stones such as granite and marble have been used as decorative materials since ancient times because of their beautiful surface patterns. In recent years, as a material showing high-quality texture, the demand for floor materials, walls, and sink top plates has been greatly increased. As a result, expensive natural stone alone can not meet the demand, and various kinds of artificial stones have been developed.

Artificial stones are classified into general artificial stones and resin-reinforced natural stones (so-called "engineered stone"). A common artificial stone is produced by adding various additives such as an inorganic filler, a colorant, and a hardener to an acrylic or unsaturated polyester base resin. Resin-reinforced natural stone is made by compounding a compound made of inorganic (silica-based) natural mineral and binder resin by compression or vibration vibration or vacuum vibration to show the texture of natural stone.

The resin-reinforced natural stone is produced so as to have a multicolor tone by mixing with a mixer a resin mixture prepared in a single color or mixed with pigments of different colors, respectively, or made of a natural stone texture using a chip.

The resin-reinforced natural stone can be produced to exhibit various colors and textures depending on the kinds of natural minerals and binder resins to be mixed, the color of the pigment, the stirring process, and the like. Further, since natural minerals are used as the main raw material, they can be manufactured to exhibit a natural texture far superior to that of common artificial stones.

In general, chips used for resin-reinforced natural stone are quartz, granite, glass, mirror, and color coated chip, and express the texture of the product by the characteristics of the chip itself such as transparency, colorability, reflectivity and natural texture. However, when artificially manufactured chips are used, it is preferable to use natural minerals such as quartz and granite because the price of resin-reinforced natural stone increases.

Conventionally, resin-reinforced natural stone has a problem in that, when natural minerals are used as chips, the surface roughness around the chip is lowered due to the difference in surface hardness during polish polishing.

Korean Patent Publication No. 2011-0052425 discloses a transparent chip surface-treated with a coloring material and a resin-reinforced natural stone using the same, but the transparent chip surface-treated with a colored material has a disadvantage that it does not show the same texture as natural stone.

Accordingly, the present inventors have come up with the development of reinforced natural stone having a polychromatic layer and excellent surface roughness and hardness by using a chip for reinforced natural stone having a high silica-containing compound content.

An object of the present invention is to provide a reinforced natural stone having a multicolored layer.

Another object of the present invention is to provide reinforced natural stone excellent in surface roughness.

Another object of the present invention is to provide reinforced natural stone excellent in hardness.

It is still another object of the present invention to provide a method for producing reinforcing natural stone having a polychrome layer and excellent surface roughness and hardness.

These and other objects of the present invention can be achieved by the present invention described below.

The reinforced natural stone chip composition having a polychromatic layer according to the present invention comprises 75 to 82% by weight of a silica-containing compound (A) and 18 to 25% by weight of an unsaturated polyester resin (B) (C) 0.5 to 4.5 parts by weight of at least one selected from the group consisting of pigments, perl, and mixtures thereof.

A method for producing a reinforced natural stone chip having a multicolored layer according to the present invention comprises the steps of: preparing a first mixture of reinforcing natural stone chips by mixing a silica sand (A1) and an unsaturated polyester resin (B) Pearl or a mixture thereof (C) to prepare a second mixture of reinforcing natural stone chips, adding a silica powder (A2) to the second mixture to mix the third mixture, Pearl or a mixture (C ') having a color different from that of the pigment, pearl or mixture thereof (C') introduced into the second mixture is added to the first mixture, Preparing a second mixture of chips and injecting silica powder (A2) to prepare one or more further third mixtures of reinforcing natural stone chips different in color from the third mixture; On Forming a mixture layer for each color by spraying and curing the mixture to form a plate material, and crushing the plate material to manufacture a reinforced natural stone chip.

The first mixture is composed of 40 to 62% by weight of the silica sand (A1) and 18 to 25% by weight of the unsaturated polyester resin (B), based on 100% by weight of the silica-containing compound (A) and the unsaturated polyester resin (B). The second mixture comprises 0.5 to 4.5 parts by weight of a pigment, a pearl or a mixture thereof (C), based on 100 parts by weight of the unsaturated polyester resin (B). The third mixture is composed of 20 to 35% by weight of the silica powder (A2) based on 100% by weight of the silica-containing compound (A) and the unsaturated polyester resin (B).

The silica-containing compound (A) is composed of 40 to 62% by weight of the silica sand (A1) and 20 to 35% by weight of the silica powder (A2) based on 100% by weight of the silica-containing compound (A) and the unsaturated polyester resin . The silica sand (A1) has a diameter of 0.1 to 1.2 mm, and the silica powder (A2) has a diameter of 10 to 45 탆.

The first mixture may further comprise a curing accelerator (D2) and a silane coupling agent (D3), and the third mixture may further comprise a curing agent (D1).

The reinforced natural stone chip having a multicolored layer is produced by crushing the sheet material into 4.0 to 20.0 mm.

The reinforced natural stone having a polychromatic layer according to the present invention comprises 60 to 83% by weight of a silica-containing compound, (b) 5 to 30% by weight of a quartz chip, and (c) (D) from 7 to 10% by weight of an unsaturated polyester resin, and (f) from 0.5 to 10 parts by weight based on 100 parts by weight of the unsaturated polyester resin (d).

The silica-containing compound (a) is contained in an amount of 30 to 55% by weight of the silica sand (a1) based on 100% by weight of the silica-containing compound (a), the quartz chip (b), the hardened natural stone chips (c) and the unsaturated polyester resin And (a2) 22 to 30% by weight of silica powder. The silica sand (a1) has a diameter of 0.1 to 1.2 mm, the silica powder (a2) has a diameter of 10 to 45 μm, and the quartz chip (b) has a diameter of 1.0 to 5.6 mm.

The reinforcing natural stone having a polychromatic layer may further comprise 1 to 2 parts by weight per 100 parts by weight of the unsaturated polyester resin (d).

The present invention has the effect of providing a reinforced natural stone chip composition for producing reinforced natural stone having a polychromatic layer and excellent surface roughness and hardness.

1 is a photograph of a natural reinforcing stone chip according to Example 6 of the present invention.
2 is a photograph of a natural fortified stone according to Example 9 of the present invention.
3 is a graph showing the results of measurement of surface roughness according to the content of the unsaturated polyester resin according to Examples 3 to 5 of the present invention.
4 is a graph showing the results of measurement of Barcol hardness according to the content of the unsaturated polyester resin according to Examples 3 to 5 of the present invention.

The present invention relates to a chip composition for reinforced natural stone and a reinforced natural stone including the same. The present invention relates to a chip composition for reinforced natural stone having a polychromatic layer and excellent surface roughness and hardness.

For reinforced natural stone  Chip composition

The reinforced natural stone chip composition having a polychromatic layer according to the present invention comprises 75 to 82% by weight of a silica-containing compound (A) and 18 to 25% by weight of an unsaturated polyester resin (B) (C) 0.5 to 4.5 parts by weight of at least one selected from the group consisting of pigments, perl, and mixtures thereof.

Hereinafter, each component constituting the natural reinforcing stone chip composition of the present invention will be specifically described.

(A) a silica-containing compound

The reinforced natural stone chip composition of the present invention comprises a silica-containing compound (A) to form a skeleton of a chip for reinforcing natural stone. The silica-containing compound (A) is composed of the silica sand (A1) and the silica powder (A2). The silica-containing compound (A) contains 75 to 82% by weight based on 100% by weight of the silica-containing compound (A) and the unsaturated polyester resin (B).

(A1) Silica sand

The silica sand (A1) used in the reinforced natural stone chip composition essentially contains a silica sand (A1) having a diameter of 0.1 to 1.2 mm as a natural ore having transparency for forming a natural stone-like appearance and texture.

The silica sand (A1) of the present invention is composed of 40 to 62% by weight based on 100% by weight of the silica-containing compound (A) and the unsaturated polyester resin (B). When the content of the silica sand (A1) is less than 40% by weight, a plate for producing a natural reinforcing stone chip is not produced or a lot of pores are generated, so that a natural reinforcing stone chip can not be formed. Layer separation occurs between the resin layer and the silica sand layer, and the surface hardness of the chip is lowered.

(A2) Silica powder

The silica powder (A2) used in the reinforced natural stone chip composition essentially contains a silica powder (A2) having a diameter of 10 to 45 mu m with a natural ore having transparency for forming a natural stone-like appearance and texture.

When the diameter of the silica powder (A2) is less than 10 mu m, the viscosity of the reinforced natural stone chip composition is too high to be mixed, and when the diameter is more than 45 mu m, pores may be generated in the production of the chip for reinforced natural stone.

The silica powder (A2) of the present invention is composed of 20 to 35% by weight based on 100% by weight of the silica-containing compound (A) and the unsaturated polyester resin (B). When the content of the silica powder (A2) is less than 20% by weight, the mixture is subjected to layer separation to form a natural reinforcing stone chip. When the amount of the silica powder (A2) is more than 35% by weight,

(B) an unsaturated polyester resin

The unsaturated polyester resin (B) used in the reinforced natural stone chip composition serves to wrap the silica-containing compound (A) which is a component forming the skeleton of the reinforced natural stone chip.

The unsaturated polyester resin (B) is produced by an esterification reaction between a polyhydric acid and a polyhydric alcohol, and a polyhydric alcohol and a polyhydric alcohol contain an unsaturated group.

As the polyvalent acid, polycarboxylic acids, polycarboxylic acid anhydrides, polycarboxylic acid halides, and polycarboxylic acid esters can be used. Examples of the unsaturated polyvalent acids include maleic, maleic, fumaric, chloromaleic, ethylmaleic, itaconic, citraconic, geronic, lyinoconic, mesaconic, Tylenecarboxylic acid, or mixtures thereof. Further, phthalic acid, isophthalic acid, terephthalic acid, succinic acid or a mixture thereof can be used.

Examples of polyhydric alcohols include dihydric alcohols such as ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, 1,3-butanediol, 1,6-hexanediol, neopentyl glycol and 1,4-cyclohexanediol, The same trivalent alcohol, tetravalent alcohol such as pentaerythritol, or a mixture thereof. As the unsaturated polyhydric alcohol, butene diol, pentene diol, allyl or vinyl glycerol ether, allyl or vinyl pentaerythritol, or a mixture thereof may be used.

The unsaturated polyester resin (B) preferably has a molecular weight of 70,000 to 100,000 g / mol. The larger the molecular weight of the unsaturated polyester resin (B) is, the better the binding force with the silica-containing compound (A) is, and even if a part of the resin is shaved in the polishing step, the natural stone particles exposed to the outside can be effectively fixed. When the molecular weight of the unsaturated polyester resin (B) is less than 70,000 g / mol, the natural stone particles may fall off from the surface of artificial marble. When the molecular weight exceeds 100,000 g / mol, the viscosity of the unsaturated polyester resin (B) Not mixed.

When the content of the unsaturated polyester resin (B) is low, the hardness of the natural reinforcing stone chip composition is increased, but the content of the silica-containing compound (A) is relatively increased, so that the viscosity of the natural reinforcing stone composition increases and chip formation becomes difficult. Accordingly, the content of the unsaturated polyester resin (B) is kept low to improve the hardness and the content of the silica-containing compound (A) is controlled to reduce the difference in surface hardness when the reinforcing natural stone is applied.

The unsaturated polyester resin (B) of the present invention is composed of 18 to 25% by weight based on 100% by weight of the silica-containing compound (A) and the unsaturated polyester resin (B). When the content of the unsaturated polyester resin (B) is less than 18% by weight, the bonding strength with the silica-containing compound (A) is decreased. When the content of the unsaturated polyester resin (B) is more than 25% by weight, the appearance and texture of natural stone can not be attained, A plate for production is not formed and many pores are generated, so that a natural reinforcing stone chip can not be formed.

(C) a pigment or a pearl

The pigment (C1) is used for realizing the color of the chip for reinforced natural stone. The pigment (C1) includes an inorganic or organic pigment and the like. Preferably, reddish brown pigments such as iron oxide, yellow pigments such as iron hydroxide, green pigments such as chromium oxide, gray pigments such as sodium aluminosilicate, white pigments such as titanium oxide, and black pigments such as carbon black are used in the field Conventional pigments may be used, and azo pigments or phthalocyanine pigments may be used.

Pearl (C2) is used to realize the texture of the chip for fortified gemstones. Generally, a pearl (C2) to which natural mica and synthetic mica are applied and a pearl (C2) to which crystal and alumina are applied are also used.

The pigment or pearl (C) is contained in an amount of 0.5 to 4.5 parts by weight based on 100 parts by weight of the unsaturated polyester resin (B). When the content of the pigment or pearl (C) is less than 0.5 part by weight, the color or texture of the reinforcing natural stone is not realized and the polychromatic layer is not exhibited. When the content of the pigment or pearl (C) is more than 4.5 parts by weight, Cost of chip increases

(D) Resin additive

In the chip composition for reinforced natural stone, the curing agent (D1) may be used in the third mixture, and the curing accelerator (D2) may be used in the first mixture for promoting the curing action. The reinforced natural stone chips can be polymerized after the curing by the curing agent (D1) and the curing accelerator (D2). It is preferable to use TBPB (t-butyl peroxy benzoate) or MEKPO (methyl ethyl ketone peroxide) as the curing agent (D1) and cobalt curing accelerator as the curing accelerator (D2). It is preferable to use 1 to 3 parts by weight of the curing agent (D1) and 0.1 to 0.3 parts by weight of the curing accelerator (D2) based on 100 parts by weight of the unsaturated polyester resin (B).

In addition, a silane coupling agent (D3) may be used for the first mixture for mixing the silica-containing compound (A) as an inorganic material and the unsaturated polyester resin (B) as an organic material. It is preferable to use 0.5 to 2 parts by weight of the silane coupling agent (D3) relative to 100 parts by weight of the unsaturated polyester resin (B).

For reinforced natural stone  Method of manufacturing chip

A method for producing a reinforced natural stone chip having a multicolored layer according to the present invention comprises the steps of: preparing a first mixture of reinforcing natural stone chips by mixing a silica sand (A1) and an unsaturated polyester resin (B) Pearl or a mixture thereof (C) to prepare a second mixture of reinforcing natural stone chips, adding a silica powder (A2) to the second mixture to mix the third mixture, Pearl or a mixture (C ') having a color different from that of the pigment, pearl or mixture thereof (C') introduced into the second mixture is added to the first mixture, Preparing a second mixture of chips and injecting silica powder (A2) to prepare one or more further third mixtures of reinforcing natural stone chips different in color from the third mixture; On Forming a mixture layer for each color by spraying and curing the mixture to form a plate material, and crushing the plate material to manufacture a reinforced natural stone chip.

The first mixture is composed of 40 to 62% by weight of the silica sand (A1) and 18 to 25% by weight of the unsaturated polyester resin (B), based on 100% by weight of the silica-containing compound (A) and the unsaturated polyester resin (B). The second mixture comprises 0.5 to 4.5 parts by weight of a pigment, a pearl or a mixture thereof (C), based on 100 parts by weight of the unsaturated polyester resin (B). The third mixture is composed of 20 to 35% by weight of the silica powder (A2) based on 100% by weight of the silica-containing compound (A) and the unsaturated polyester resin (B).

The first mixture may further contain a curing accelerator (D2) and a silane coupling agent (D3) as a resin additive. As the curing accelerator (D2) used in the first mixture, it is preferable to use a cobalt-based curing accelerator. The curing accelerator (D2) is preferably used in an amount of 0.1 to 0.3 parts by weight based on 100 parts by weight of the polyester resin Do. The silane coupling agent (D3) used in the first mixture is preferably used in an amount of 0.5 to 2 parts by weight based on 100 parts by weight of the unsaturated polyester resin (B).

The second mixture is composed of 0.5 to 4.5 parts by weight of pigment, pearl or a mixture (D) thereof per 100 parts by weight of the unsaturated polyester resin (B).

The third mixture is composed of 20 to 35% by weight of the silica powder (A2) based on 100% by weight of the silica-containing compound (A) and the unsaturated polyester resin (C). When the silica powder (A2) is put into the first mixture, the silica powder (A2) does not aggregate and can not produce a chip for reinforced natural stone.

The third mixture may further contain a curing agent (D1) as a resin additive. The curing agent (D1) used in the third mixture is preferably used in an amount of 1 to 3 parts by weight based on 100 parts by weight of the unsaturated polyester resin (B).

In the step of molding the sheet material, a mixture layer for each color is formed while spraying each third mixture to the sheet material frame, and the mixture is put into an oven and cured at a temperature of 80 to 90 ° C for 1 hour to form a sheet material.

The reinforced natural stone chip having a multicolor layer is produced by crushing the molded plate into a crusher and crushing it to 2.0 to 20.0 mm according to a desired size.

For reinforced natural stone  chip

The reinforced natural stone chips produced by the method for manufacturing reinforced natural stone have a texture similar to natural stone by forming a multicolored layer without mixing the colors of the respective pigments.

Further, since the content of the silica-containing compound (A) is higher than the content of the unsaturated polyester resin (B), the reinforced natural stone chip has a surface hardness similar to that of the reinforced natural stone, Can be prevented.

The reinforced natural stone chip has a surface roughness of 0.1 to 1.0 탆 measured by SJ-301, an illuminance meter of Mitutoyo, in accordance with JIS 2001. When the surface roughness is within the above range, it can be said that the surface hardness and the abrasiveness of the conventional resin-reinforced natural stone are similar.

Reinforced natural stone

The reinforcing natural stone having a polychromatic layer according to the present invention comprises 60 to 83% by weight of a silica-containing compound, 5 to 30% by weight of a quartz chip, and 3 to 10% by weight of a reinforcing gemstone- (D) 7 to 10% by weight of an unsaturated polyester resin, and (e) 0.5 to 10 parts by weight of a pigment relative to 100 parts by weight of the unsaturated polyester resin (d).

The silica-containing compound (a) is a mixture of (a1) 30 to 55% by weight of (a1) silica sand with respect to 100% by weight of the silica-containing compound (a), the quartz chip (b), the reinforcing natural stone chip (c) and the unsaturated polyester resin Wherein the silica sand (a1) has a diameter of 0.1 to 1.2 mm, the silica powder (a2) has a diameter of 10 to 45 탆, and the quartz chip (b) Has a diameter of 1.0 to 5.6 mm.

The reinforced natural stone having a polychromatic layer may further comprise 1 to 2 parts by weight of pearl (f) per 100 parts by weight of the unsaturated polyester resin (d) in order to realize a texture. The reinforcing natural stone may include a resin such as a hardener, a hardening accelerator, And may further include an additive (g).

The polished surface of the reinforced natural stone has a Barcol hardness of 80 to 95 as measured by Barber Colman's GYZJ 934-1, a hardness meter according to ASTM D2583. When the Barcol hardness is within the above range, the surface roughness due to the difference in surface hardness can be prevented from being lowered.

The silica sand (a1), the silica powder (a2), the reinforcing natural stone chip (c), the unsaturated polyester resin (d), the pigment (e), the pearl (f) and the resin additive (g) (A), the silica powder (A2), the unsaturated polyester resin (B), the pigment or the pearl (C) and the resin additive (D) described in the reinforced natural stone chip composition. In order to avoid the overlapping substrate, Do not write.

Hereinafter, preferred embodiments of the present invention will be described. However, the following examples are only a preferred embodiment of the present invention, and the present invention is not limited by the following examples.

Example

The components used in Examples and Comparative Examples are as follows.

For reinforced natural stone  chip

(A) a silica-containing compound

(A1) Silica sand

A silica sand of Kale Maden, Inc., having a diameter of 0.1 to 1.2 mm, was used.

(A2) Silica powder

Silica powder of 21 st century silica having a diameter of 10 to 45 탆 was used.

(B) an unsaturated polyester resin

ATM100 of Aekyoung Chemical having a molecular weight of 80,000 g / mol was used.

(C) Pearl

Perlot used AX-701G, R-701E, and R-620G.

(D) Resin additive

(D1) TBPB was used as a hardener.

(D2) 6% Cobalt-Octoate, a cobalt-based curing accelerator, was used as the curing accelerator.

(D3) WD-70 of Gudam Co. was used as a silane coupling agent.

Reinforced natural stone

(a) a silica-containing compound

(a1) Silica sand

A silica sand of Kale Maden, Inc., having a diameter of 0.1 to 1.2 mm, was used.

(a2) silica powder

Silica powder of 21 st century silica having a diameter of 10 to 45 탆 was used.

(b) quartz chips

A silica-based quartz chip of the 21st century with a diameter of 1.0 to 5.6 mm was used.

(d) Unsaturated polyester resin

ATM100 of Aekyoung Chemical having a molecular weight of 80000 g / mol was used.

(e) Pigment

318M, Y6R, R110, and TR92 of Wisin Pigment Co. were used.

(g) Additive

(g1) As the hardener, TBPB of Centaurea Co., Ltd. was used.

(g2) 6% Cobalt-Octoate, a cobalt-based curing accelerator, was used as the curing accelerator.

(g3) WD-70 of Gudam Co. was used as a silane coupling agent.

Example  1-8 and Comparative Example  1-9: For reinforced natural stone  chip

A first mixture of reinforcing natural stone chips was prepared by mixing a curing accelerator (D2) and a silane coupling agent (D3) in a silica sand (A1) and an unsaturated polyester resin (B) with compositions as shown in Tables 1 and 2 below, (AX-701G) was added to the mixture to prepare a second mixture of reinforcing natural stone chips, and a silica powder (A2) was added to the second mixture to prepare a third mixture of reinforcing natural stone chips. Two pearl (C) (R-701E, R-620G) having different colors were added to the first mixture to prepare two third mixtures of reinforcing natural stone chips having different colors. Three third mixtures having different hue were sprayed to the plate molds at a ratio of 1: 1: 1 to prepare a mixture layer for each color. The mixture was put into an oven and cured at a temperature of 80 to 90 ° C for 1 hour, Was formed.

(A), (A2) and (B) in the following Tables 1 and 2 are based on 100% by weight of (A1) Parts by weight with respect to parts by weight. Also, (C) is the total content used in the three third mixtures.

Example One 2 3 4 5 6 7 8 (A) (A1) 50 60 50 55 57 60 60 60 (A2) 30 20 25 25 25 20 20 20 (B) 20 20 25 20 18 20 20 20 (C) 2.0 2.0 2.0 2.0 2.0 3.5 2.5 1.0
(D) (D1) 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 (D2) 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 (D3) 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0

Comparative Example One 2 3 4 5 6 7 8 9 (A) (A1) 65 70 75 40 45 60 60 60 60 (A2) 15 10 5 25 25 25 20 20 20 (B) 20 20 20 35 30 15 20 20 20 (C) 2.0 2.0 2.0 2.0 2.0 2.0 4.0 3.0 0.5
(D) (D1) 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 (D2) 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 (D3) 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0

The surface roughness of the polished surface of the reinforced natural stone was measured by using the following physical property evaluation method for the molded plate material, and the results are shown in Tables 3 and 4,

(1) Barcol hardness: Measured according to ASTM D2583 by Barber Colman's hardness meter GYZJ 934-1.

(2) Surface roughness (占 퐉): Measured by SJ-301, an illuminance meter of Mitutoyo, according to JIS 2001.

(3) Plate condition: The appearance of the plate was observed.

X: A multicolored layered board was produced. X: The board itself was not formed or the board was formed, but many pores were generated, so that a chip for a hardened natural stone could not be formed.

Example One 2 3 4 5 6 7 8 Barcol hardness 84 83 85 87 89 83 84 83 Surface roughness 0.87 0.84 0.98 0.58 0.25 0.67 0.70 0.72 Plate condition ○ ○ ○ ○ ○ ○ ○ ○

Comparative Example One 2 3 4 5 6 7 8 9 Barcol hardness 61 54 51 72 75 - 82 83 82 Surface roughness 2.57 3.18 3.27 1.94 1.58 - 1.26 1.24 1.31 Plate condition X X X X ○ X ○ ○ X

Example 1-8, which satisfied the content range of the present invention, produced a multicolor layered board, having a Barcol hardness of 80 to 95 and a surface roughness of 0.1 to 1.0 占 퐉 and having a surface hardness similar to that of reinforced natural stone, It is possible to prevent a phenomenon in which the surface roughness is lowered.

On the other hand, in Comparative Examples 7-9 in which the content of the silica sand (A1) exceeded the upper limit value of the present invention, the surface roughness exceeded 1.0 占 퐉. In Comparative Example 1-3 in which the content of the silica sand (A1) exceeded the upper limit value of the present invention and the content of the silica powder (A2) was lower than the lower limit of the present invention, the Barcol hardness and surface roughness were remarkably decreased. In Comparative Example 6 in which the content of the silica sand (A1) exceeds the upper limit value of the present invention and the content of the unsaturated polyester resin (B) is lower than the lower limit value of the present invention, the plate material itself is not formed or the plate material is produced, So that a chip for strengthened natural stone could not be formed.

In Comparative Example 4-5 in which the content of the unsaturated polyester resin (B) exceeded the upper limit value of the present invention, the Barcol hardness was less than 80 and the surface roughness exceeded 1.0 占 퐉.

Example  9: Reinforced natural stone

(C) 5% by weight of the reinforcing gem stone (c) according to Example 5, and 5% by weight of the unsaturated polyester resin (d) were mixed in a ratio of 50% by weight of the silica sand (a1), 25% by weight of silica powder (a2) , 5 parts by weight of the pigment (e), 2 parts by weight of the curing agent (g1), 0.2 part by weight of the curing accelerator (g2) and 100 parts by weight of the silane coupling agent (g3 ) Was used to prepare reinforcing natural stone. A photograph of the reinforced natural stone thus produced is shown in Fig.

Claims (15)

(A) a silica-containing compound;
(B) an unsaturated polyester resin; And
(C) at least one selected from the group consisting of pigments, perl, and mixtures thereof;
/ RTI >
Wherein the silica-containing compound (A) comprises 40 to 62% by weight of the silica sand (A1) and 20 to 35% by weight of the silica powder (A2) based on 100% by weight of the silica-containing compound (A) and the unsaturated polyester resin % By weight,
Wherein the silica sand (A1) has a diameter of 0.1 to 1.2 mm, and the silica powder (A2) has a diameter of 10 to 45 탆.
The reinforced natural stone chip composition according to claim 1, wherein the reinforced natural stone chip composition has a polychromatic layer in which at least two or more layers of color are separated. The reinforced natural stone chip composition according to claim 1,
(A) 75 to 82% by weight of a silica-containing compound; And
(B) from 18 to 25% by weight of an unsaturated polyester resin;
And 0.5 to 4.5 parts by weight of at least one selected from the group consisting of (C) a pigment, a pearl and a mixture thereof, relative to 100 parts by weight of the unsaturated polyester resin (B) By weight.
delete delete Mixing the silica sand (A1) and the unsaturated polyester resin (B) to prepare a first mixture of reinforcing natural stone chips;
Adding at least one (C) selected from the group consisting of pigment, perl, or a mixture thereof to the first mixture to prepare a second mixture of reinforcing natural stone chips;
Adding silica powder (A2) to the second mixture to produce a third mixture of reinforcing natural stone chips;
Pearl or a mixture (C ') having a color different from that of the pigment, pearl or mixture thereof (C') introduced into the second mixture is added to the first mixture, Preparing a second mixture of chips and injecting silica powder (A2) into the second mixture to produce at least one third mixture of reinforcing natural stone chips different in hue from the third mixture;
Mixing the third mixture and at least one third mixture different in hue from the third mixture, and curing the mixture to cure the plate material; And
Crushing the plate material to produce a chip for reinforced natural stone;
And a multi-colored layer.
The method according to claim 6, wherein the first mixture contains 40 to 62% by weight of the silica sand (A1) and 40 to 62% by weight of the unsaturated polyester resin (B) based on 100% by weight of the silica- B) from 18 to 25% by weight,
Wherein the second mixture contains 0.5 to 4.5 parts by weight of at least one selected from the group consisting of (C) a pigment, a pearl or a mixture thereof, based on 100 parts by weight of the unsaturated polyester resin (B)
Wherein the third mixture comprises 20 to 35% by weight of silica powder (A2) based on 100% by weight of the silica-containing compound (A) and the unsaturated polyester resin (B) .
The method according to claim 6, wherein the silica sand (A1) has a diameter of 0.1 to 1.2 mm, and the silica powder (A2) has a diameter of 10 to 45 탆.
The method of claim 6, wherein the first mixture further comprises a curing accelerator (D2) and a silane coupling agent (D3), and the third mixture further comprises a curing agent (D1) Way.
The method according to claim 6, wherein the plate material is crushed to 4.0 to 20.0 mm.
A reinforced gemstone chip produced by the method for manufacturing a reinforced gemstone chip according to any one of claims 6 to 10.
The reinforced natural stone chip according to claim 11, wherein the reinforcing natural stone chip has a Barcol hardness of 80 to 95 as measured by GYZJ 934-1, a durometer of Barber Colman, according to ASTM D2583.
(a) 60 to 80% by weight of a silica-containing compound;
(b) 10 to 30% by weight of quartz chips;
(c) 3 to 10% by weight of a reinforcing gemstone chip according to claim 10; And
(d) 7 to 10% by weight of an unsaturated polyester resin,
With respect to 100 parts by weight of the unsaturated polyester resin (d)
(e) 0.5 to 10 parts by weight of a pigment, and having a polychromatic layer.
14. The method of claim 13, wherein the silica-containing compound (a) is added to 100 weight% of the silica-containing compound (a), the quartz chip (b), the reinforcing natural stone chip (c), and the unsaturated polyester resin Wherein the silica sand (a1) has a diameter of 0.1 to 1.2 mm, and the silica powder (a2) comprises 10 to 10% by weight of silica sand (a1) And the quartz chip (c) has a diameter of 1.0 to 5.6 mm.
14. The reinforced natural stone chip according to claim 13, wherein the polished surface of the reinforced natural stone has a surface roughness of 0.1 to 1.0 m measured by SJ-301, an illuminance meter of Mitutoyo, according to JIS 2001.

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