KR101540879B1 - Artificial marble used for colored nonmetallic mineral and manufacturing method thereof - Google Patents

Abstract

The present invention relates to an artificial marble using a colored non-metallic mineral and a manufacturing method thereof wherein the artificial marble using a colored non-metallic mineral includes a colored non-metallic mineral whose surface average diameter is between 0.3 and 200 mm with a first colored layer coated with a first colored paint having an inorganic pigment selected from a group consisting of lithium silicate, sodium silicate, potassium silicate, calcium silicate, magnesium silicate, colloidal silica and mixtures thereof.

Description

TECHNICAL FIELD [0001] The present invention relates to an artificial marble using colored nonmetallic minerals and a method of manufacturing the same. BACKGROUND ART [0002]

The present invention relates to an artificial marble using colored nonmetallic minerals and a method of manufacturing the same. More particularly, the present invention relates to an artificial marble using colored nonmetallic minerals produced through a compression molding process including colored nonmetallic minerals and a manufacturing method thereof.

Natural stone or natural marble, which is generally used in buildings, is widely used as a building material due to characteristics such as durability, chemical resistance, corrosion resistance and high strength possessed by the stone itself and the pattern and texture possessed by the stone itself. However, And the production amount is limited. In particular, there is a problem that the natural stone which can be used is limited because the physical properties of the stone or the pattern of the stone are not constant.

As a result, studies have been conducted to replace natural stone in various ways as artificial stone or a film attached to stone that has a shape similar to the color and pattern of natural stone or natural marble, and as a processed product of other stone, As a result, various products have been developed and used for various purposes such as interior decorations having shapes similar to those of natural stone.

Specifically, the method of producing an artificial stone having a shape similar to that of a stone by mixing an inorganic compound having a certain composition has an advantage that the physical properties of the stone can be kept constant, but the color and texture of the stone can be produced more naturally And there is a drawback that it is difficult to express the three-dimensional feeling and the natural texture or pattern when the post-processing step of applying a pattern or the like to the artificial stone increases the normal cost of the manufacturing process.

There is a method of attaching a film printed with a pattern of a marble surface to the stone, but it is advantageous in that the printed film is attached to a synthetic stone, and the cost is low. However, And the texture and the sense of depth are lower than that of natural stone, and the durability of the film itself is very low, so that there is a disadvantage that the usable application is limited.

Further, in the artificial marble processing method in which the surface of natural stone is directly colored with a marble pattern, only the coloring matter is absorbed through the pores in the stone itself, so that there is almost no effect of making the interior of the stone natural to feel the natural feeling in addition to the surface. In the case of the marble processing method, a certain shape is directly printed on the stone, so that there are practical limitations in forming various marble patterns, and it is very difficult to express the natural texture and the durability of the surface portion of the artificial marble . In particular, since natural stone is used as it is, there is a disadvantage in that the uniformity of the product is low and there are many inconveniences in the process.

Accordingly, there is a need to develop artificial marble that can exhibit a natural texture of marble, can hold various patterns, and can achieve uniformity of uniform quality and a manufacturing method thereof.

Prior art 1 (KR 10-0837610 B1, publication date: June 12, 2008) refers to a composition for coloring stones that is stuck in the interior of a stone to color the stone. As mentioned above, it is premised on a method of directly coloring a natural stone, and it is difficult to produce a natural texture according to the difference in characteristics of each stone in the process of collecting natural stone, and not only the process can be simplified, There is a problem that durability of the colored layer is low.

Prior art 2 (KR 10-2010-0030977 A, published on Mar. 19, 2010) relates to a bonding composition comprising a main ingredient of inorganic material, wherein the bonding composition comprises a ceramic powder and the like, Thereby producing a molded body. This is a method of manufacturing artificial stone, which is characterized in that each ceramic particle is formed in the form of a molded article by an inorganic adhesive having a high viscosity, the molded article using the adhesive is extremely low in durability and the overall appearance does not exhibit a natural texture there is a problem.

KR 10-0837610 B1 KR 10-2010-0030977 A

It is an object of the present invention to provide an artificial marble using colored nonmetallic minerals which contain colored nonmetallic minerals as chips and which are more natural in color and texture as well as have high durability and chemical resistance.

Another object of the present invention is to provide a method for manufacturing artificial marble using the colored nonmetallic mineral.

In order to achieve the above object, the artificial marble using the colored nonmetallic mineral according to an embodiment of the present invention has a surface of a nonmetallic mineral having an average diameter of 0.3 to 200 mm

A group consisting of lithium silicate, sodium silicate, potassium silicate, calcium silicate, magnesium silicate, colloidal silica, and mixtures thereof. A first coloring layer on which a first coloring paint containing one selected and an inorganic pigment is applied, and a second coloring layer on which a urethane resin, an epoxy resin, an acrylic resin, , A silicone resin, a polyvinyl acetate resin, a polyamide resin, a polycarbonate resin, and a mixture thereof, and an organic pigment, an inorganic pigment, A second coloring layer to which a second coloring coating containing a mixture of any one selected from the group consisting of a mixture of these is applied, Wherein the surface of the second colored layer is coated with a material selected from the group consisting of urethane resin, epoxy resin, acrylic resin, silicone resin, vinyl acetate resin, polyamide resin, polycarbonate resin and mixtures thereof, lithium silicate, And a colored layer comprising a coating layer on which a coating liquid containing a mixture of any one selected from the group consisting of calcium silicate, magnesium silicate and a mixture thereof, and a surfactant is applied, have.

The first colored layer may further include potassium dihydrogen phosphate.

The artificial marble using the colored nonmetallic mineral may further include an inorganic filler and an epoxy resin adhesive.

The method of manufacturing artificial marble using colored nonmetallic mineral according to another embodiment of the present invention comprises the steps of selecting nonmetallic minerals having an average diameter of 0.3 to 200 mm, lithium silicate, sodium silicate, potassium silicate, calcium silicate, magnesium silicate, colloidal silica, and mixtures thereof. Any one selected from the group consisting of lithium silicate, sodium silicate, potassium silicate, A first coloring layer forming step of forming a first coloring layer by drying a nonmetal mineral through the first coloring layer applying step, a second coloring layer forming step of forming a first coloring layer by drying the non- 1 coloring layer forming step, a urethane resin, an epoxy resin, an acrylic resin, A pigment selected from the group consisting of a silicone resin, a polyvinyl acetate resin, a polyamide resin, a polycarbonate resin and a mixture thereof and an organic pigment, A second coloring layer to which the second coloring layer is applied, a second coloring layer to which the second coloring layer is applied, and a second coloring layer formed by drying the nonmetal mineral through the second coloring layer coating step An epoxy resin, an acrylic resin, a silicone resin, a vinyl acetate resin, a polyamide resin, a polycarbonate resin, and a mixture thereof on the surface of the non-metallic mineral which has undergone the forming step of the second colored layer Any one selected from the group consisting of lithium silicate, sodium silicate, potassium silicate, calcium silicate, magnesium silicate And a surfactant, and a non-metallic mineral coated with the coating liquid are heat-treated at a temperature of 100 to 800 ° C with stirring to form a coating layer A step of forming a colored nonmetallic mineral including a step of forming a coating layer on the surface; A mixing step of mixing the colored nonmetallic mineral with an inorganic filler to prepare a mixed raw material; A compression molding step of mixing artificial marble with the mixed raw material by mixing with an epoxy resin and performing compression molding; And a polishing step of polishing the surface of the artificial marble.

Hereinafter, the present invention will be described in more detail.

In order to achieve the above object, the artificial marble using the colored nonmetallic mineral according to an embodiment of the present invention has a surface of a nonmetallic mineral having an average diameter of 0.3 to 200 mm

A group consisting of lithium silicate, sodium silicate, potassium silicate, calcium silicate, magnesium silicate, colloidal silica, and mixtures thereof. A first coloring layer on which a first coloring paint containing one selected and an inorganic pigment is applied, and a second coloring layer on which a urethane resin, an epoxy resin, an acrylic resin, , A silicone resin, a polyvinyl acetate resin, a polyamide resin, a polycarbonate resin, and a mixture thereof, and an organic pigment, an inorganic pigment, A second coloring layer to which a second coloring coating containing a mixture of any one selected from the group consisting of a mixture of these is applied, Wherein the surface of the second colored layer is coated with a material selected from the group consisting of urethane resin, epoxy resin, acrylic resin, silicone resin, vinyl acetate resin, polyamide resin, polycarbonate resin and mixtures thereof, lithium silicate, And a colored layer comprising a coating layer on which a coating liquid containing a mixture of any one selected from the group consisting of calcium silicate, magnesium silicate and a mixture thereof, and a surfactant is applied, have.

The nonmetallic minerals described throughout this specification mean minerals that can be used for artificial earth stone and are considered to include all minerals such as natural and artificial stone in addition to metallic mineral.

The non-metallic mineral may have an average diameter of 0.3 to 200 mm. If the thickness is less than 1 mm, the colored layer is difficult to be formed uniformly. Therefore, it is difficult to produce colored nonmetallic mineral used for artificial stone. When the thickness exceeds 200 mm, the colored layer is not formed uniformly There is a disadvantage that an additional process is required.

On the other hand, more preferably, the nonmetallic mineral may have an average diameter of 1 to 30 mm. According to the above-mentioned range, it is possible to obtain a colored layer evenly formed by a relatively simple process.

The first coloring paint forming the first colored layer penetrates into the pores or micro pores of the selected nonmetallic mineral to reinforce durability and abrasion resistance so that the nonmetallic mineral is not broken during processing. This can be an important feature in the process of cutting the artificial marble to a certain size after compression molding.

In addition, by applying the surface of the non-metallic mineral, the color and texture of the second colored layer can be more clearly displayed. This is advantageous in that when the non-metallic mineral is used as the natural stone, the second colored layer and the coating layer can be uniformly formed on the entire surface because the surface treatment can be smooth.

Preferably, the first colored coating material may be prepared by mixing lithium silicate and potassium silicate in a weight ratio of 1:10 to 10: 1 and mixing the mixture with water at a weight ratio of 1:10 to 10: 1. When the mixture of lithium silicate and potassium silicate is used, it has the most excellent effect of reinforcing the physical properties of the non-metallic mineral and has relatively high adhesiveness even at a low viscosity. Therefore, the second colored layer, which is applied on the first colored layer, There is an advantage that it can be combined. Also, when the weight ratio is within the above range, the adhesion of lithium silicate and the reinforcing effect of potassium silicate are the most excellent.

More preferably, the first colored coating material may be a mixture of lithium silicate and colloidal silica at a weight ratio of 1:10 to 10: 1. In this case, the reinforcing effect by the colloidal silica can be more excellent.

The inorganic pigment included in the first colored paint has an advantage that the color and texture of the colored layer can be formed more naturally as well as the reinforcing effect. However, the inorganic pigment may be contained in an amount of 1 to 10% by weight of the first coloring paint. If the amount is less than 1% by weight, the above effect is not obtained. If it exceeds 10% by weight, the reinforcing effect is lowered, and the coloring property of the second coloring layer is difficult to be matched with that of the second coloring layer. It is because.

Preferably, the second colored coating material may be a mixture of the urethane resin and the epoxy resin in a weight ratio of 1: 10 to 10: 1, or a mixture of urethane resin and silicone resin in a weight ratio of 1: 1 to 10: 1. By the above-described range, color tone of the pigment can be produced, and excellent texture can be expressed while forming a coloring layer dispersed evenly over the entire surface of the first colored layer. Particularly, when applied on the first colored layer, the loss due to pores is less than that applied directly to the surface of a general natural stone or artificial stone, and the surface of the non-metallic mineral is relatively uniform due to the formation of the first colored layer, And the second coloring paint is uniformly dispersed on the entire surface of the non-metallic mineral to form the second colored layer.

The pigments include both organic and inorganic pigments and are considered to include all pigments that are generally available to those of ordinary skill in the art.

The above-mentioned urethane resin, epoxy resin, acrylic resin, silicone resin, polyvinyl acetate resin, polyamide resin, polycarbonate resin polycarbonate resin, and mixtures thereof, and any one selected from the group consisting of an organic pigment, an inorganic pigment, and a mixture thereof may be mixed in a weight ratio of 10: 1 to 3: 1. When the content of the pigment is outside the above range, the content of the pigment relatively increases and the durability of the second colored layer is deteriorated. On the other hand, when the content of the pigment is relatively decreased, it is difficult to express the desired color and texture.

The coating layer may be formed of any one selected from the group consisting of a urethane resin, an epoxy resin, an acrylic resin, a silicone resin, a vinyl acetate resin, a polyamide resin, a polycarbonate resin and a mixture thereof and a lithium silicate, sodium silicate, potassium silicate, calcium silicate, Magnesium silicate, and mixtures thereof may be mixed in a weight ratio of 1:10 to 10: 1. If it is out of the above range, it is difficult to evenly disperse the surfactant even if a surfactant is used, and there is a possibility that the applied coating layer is irregularly formed.

The coating solution may be prepared by mixing 30 to 100 parts by weight of a silicone resin, 10 to 50 parts by weight of lithium silicate, and 0.01 to 5 parts by weight of a surfactant with respect to 100 parts by weight of a urethane resin. According to the above range, there is an advantage that the durability is maximized.

Preferably, the coating layer may be prepared by mixing 20 to 100 parts by weight of a vinyl acetate resin with 10 to 30 parts by weight of a potassium silicate resin, lithium silicate 1 to 10, 100 to 5 parts by weight of a urethane resin, 0.0 > RPM. ≪ / RTI > In the above range, since the resin is dispersed evenly and instantly, it is possible to form a coating layer uniformly coated on the second colored layer.

The coating layer protects the pigment of the second colored layer, the surface of the colored layer can be expressed very smoothly, and the durability of the colored layer can be maximized.

The colored layer may be one obtained by heat-treating the non-metallic mineral at 100 to 800 캜 with stirring.

The coloring layer may be applied by spraying the first and second colored paints and the coating layer while rotating the non-metallic mineral particles in an agitator at 5 to 1000 RPM.

The colored layer may be one obtained by heat-treating the non-metallic mineral at 100 to 800 캜 with stirring. The stirring may be performed by heat treating the non-metallic mineral grains at 100 to 800 ° C while rotating at 100 to 3000 RPM. It is possible to stably dry the colored layer in the case of performing the heat treatment while rotating, and it is also an advantage that the first and second colored paints and the coating layer stably maintain each layer and the colored surface can be dried while maintaining a uniform shape .

The first colored coating material may have a viscosity of 1 to 50 cP and a viscosity of 70 to 240,000 cP.

If the viscosity of the first coloring paint is more than 1 cP, it is difficult to form the first coloring layer because the first coloring paint may flow down or be uncoated in the coating process. If the viscosity exceeds 50 cP, 1 coloring paint can not permeate, and thus the effect of reinforcing by using the first coloring paint is low.

If the viscosity of the coating liquid exceeds 70 cP, the coating liquid applied on the surface of the second colored layer may flow down before being dried, so that a stable coating layer can not be formed. When the viscosity exceeds 240000 cP, the coating layer is uniformly It can not be formed.

Preferably, the viscosity of the coating liquid may be 1000 to 10,000 cP. In the above range, it is possible to uniformly disperse and form a uniformly dispersed coating layer when heat-treated while stirring. Particularly, since the organic layer and the inorganic layer can be distributed evenly, the non-metallic mineral can be effectively applied to the heat- have.

When the colored nonmetallic mineral is included, the coloring layer is clearly formed irrespective of the pigment to be used. In addition, since the colored nonmetallic mineral is excellent in physical properties, the colored nonmetallic mineral is broken or cracked during processing into artificial marble. There is no problem and a clear coloring layer can be maintained.

The first colored layer may further include potassium dihydrogen phosphate.

The potassium dihydrogenphosphate is selected from the group consisting of lithium silicate, sodium silicate, potassium silicate, calcium silicate, magnesium silicate, colloidal silica, and the like. , It is possible not only to control the elapsed speed of the first coloring layer but also to increase the strength of the first coloring layer sharply.

Preferably, the potassium dihydrogen phosphate may be used in an aqueous solution of 0.1 to 1 wt%, and the potassium hydrogen phosphate aqueous solution may be lithium silicate, sodium silicate, potassium silicate, calcium May be contained in a weight ratio of 1: 10 to 1: 1000 with any one selected from the group consisting of calcium silicate, magnesium silicate, colloidal silica, and mixtures thereof.

According to the above range, the coloring layer particles are uniformly formed, and the effect of reinforcing the physical properties of the nonmetallic mineral can be increased.

More preferably, the potassium silicate and the potassium dihydrogen phosphate may be mixed in a weight ratio of 170: 1 to 230: 1. According to the above range, the coloring layer is uniformly formed and exhibits a clear color together with the inorganic pigment, and the reinforcing effect on the first coloring layer can be further enhanced.

Further, more preferably, the lithium silicate, the potassium silicate, and the potassium dihydrogen phosphate may be mixed in a weight ratio of 1: 1: 340 to 1: 2: 500. According to the above range, the hardness is increased and the bondability with the second colored layer is excellent, so that it is possible to obtain an optimum effect to be included as a chip for artificial marble.

The artificial marble using the colored nonmetallic mineral may further include an inorganic filler and an epoxy resin adhesive.

The inorganic filler may be one comprising quartz, a mirror, glass, silica powder, expanded silica, perlite, and mixtures thereof.

The epoxy resin adhesive can strongly fix the colored chips and may be suitable for use as artificial marble.

Preferably, the artificial marble further comprises 100 parts by weight of the epoxy resin adhesive and 50 to 300 parts by weight of an inorganic adhesive mixed with the epoxy resin in a weight ratio of potassium silicate and potassium dihydrogen phosphate of 170: 1 to 230: 1 . In this case, since the strength of the artificial marble is rapidly increased, artificial marble having superior durability and scratch resistance can be produced.

The artificial stone may be a surface coating agent coated on the surface after compression molding.

The surface coating agent may be an acrylic resin and an epoxy resin mixed in a weight ratio of 1: 3 to 1: 5. When the coating agent having the above range is used, the occurrence of scratches on the artificial stone in the polishing process can be minimized, and the artificial stone can be excellently expressed in texture and texture with a clear coating.

More preferably, the surface coating agent may include 100 parts by weight of an acrylic resin, 200 to 500 parts by weight of an epoxy resin, and 10 to 40 parts by weight of a styrene resin. With the above-mentioned surface coating agent, it is possible to improve the expression of texture and texture of artificial marble by a clear coating and a strong adhesion to the artificial marble.

The method of manufacturing artificial marble using colored nonmetallic mineral according to another embodiment of the present invention comprises the steps of selecting nonmetallic minerals having an average diameter of 0.3 to 200 mm, lithium silicate, sodium silicate, potassium silicate, calcium silicate, magnesium silicate, colloidal silica, and mixtures thereof. Any one selected from the group consisting of lithium silicate, sodium silicate, potassium silicate, A first coloring layer forming step of forming a first coloring layer by drying a nonmetal mineral through the first coloring layer applying step, a second coloring layer forming step of forming a first coloring layer by drying the non- 1 coloring layer forming step, a urethane resin, an epoxy resin, an acrylic resin, A pigment selected from the group consisting of a silicone resin, a polyvinyl acetate resin, a polyamide resin, a polycarbonate resin and a mixture thereof and an organic pigment, A second coloring layer to which the second coloring layer is applied, a second coloring layer to which the second coloring layer is applied, and a second coloring layer formed by drying the nonmetal mineral through the second coloring layer coating step An epoxy resin, an acrylic resin, a silicone resin, a vinyl acetate resin, a polyamide resin, a polycarbonate resin, and a mixture thereof on the surface of the non-metallic mineral which has undergone the forming step of the second colored layer Any one selected from the group consisting of lithium silicate, sodium silicate, potassium silicate, calcium silicate, magnesium silicate And a surfactant, and a non-metallic mineral coated with the coating liquid are heat-treated at a temperature of 100 to 800 ° C with stirring to form a coating layer A step of forming a colored nonmetallic mineral including a step of forming a coating layer on the surface; A mixing step of mixing the colored nonmetallic mineral with an inorganic filler to prepare a mixed raw material; A compression molding step of mixing artificial marble with the mixed raw material by mixing with an epoxy resin and performing compression molding; And a polishing step of polishing the surface of the artificial marble.

The press forming and polishing steps are considered to include all methods available to those skilled in the art.

The artificial marble using the colored nonmetallic mineral according to the present invention includes colored nonmetallic minerals as a chip so that the color and texture are natural as well as durability and chemical resistance, It can be utilized as building materials or interior materials.

In addition, the present invention provides a method for producing artificial marble using the colored non-metallic mineral.

Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

[Preparation Example: Preparation of Examples and Comparative Examples]

In order to confirm the effect according to the present invention, coloring was proceeded with the composition shown in Table 1 below. The non-metallic minerals other than the coloring step were screened, cleaned, standardized, and after the coloring, the squirrel process was carried out according to a conventional method. Otherwise, the manufacturing step was carried out according to the manufacturing method of the present invention.

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 The first colored layer ○ ○ ○ ○ ○ - ○ Potassium dihydrogen phosphate
Aqueous solution - - ○ - - - - The second colored layer ○ ○ ○ - - ○ ○ Reinforced layer ○ ○ ○ - - - - Coating layer - ○ ○ - ○ - -

First coloring layer: A first coloring paint (viscosity of 50 cP) prepared by mixing lithium silicate and potassium silicate in a weight ratio of 1: 2 and mixing the mixed mixture with water in a ratio of 1: 0.7 was used, The mineral was put in a stirrer and sprayed with the first colored paint while rotating at 500 RPM.

-Potassium dihydrogenphosphate aqueous solution: The first coloring paint and 0.2w% potassium dihydrogenphosphate aqueous solution were mixed at a weight ratio of 210: 1.

Second coloring layer: The urethane resin and the epoxy resin were mixed in a weight ratio of 8: 2, carbon black was used as a pigment, and the non-metallic mineral was put into a stirrer and sprayed with the second coloring paint while rotating at 500 RPM.

Coating layer: A urethane resin, a silicone resin, a lithium silicate and a surfactant were mixed at a weight ratio of 100: 35: 20: 0.3, and 1 part by weight of acetic acid was mixed with 100 parts by weight of the urethane resin to prepare a coating solution. The coating solution was sprayed at a high speed during stirring to coat the coating solution.

- Stiffening layer: a mixture of ethanol and colloidal silica in a weight ratio of 4: 1 was used.

On the other hand, in the comparative example, carbon black was used as a pigment in each of the input layers so that color and texture could be compared with the examples.

[Experimental Example 1: Color Evaluation and Durability Evaluation]

Example 1 was set as 10, and the contents according to the following Table 2 were indexed on the basis thereof, and the contents were evaluated for each Example and Comparative Example. The higher the number, the better the effect.

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Pressure resistance 10 12 20 5 10 2 7 Chemical resistance 10 10 10 5 10 3 5 Scratch resistance 10 12 20 One 7 3 5 Texture 10 11 15 3 4 5 8 Color 10 10 12 2 4 4 8

Referring to Table 2, it can be seen that the best coloring can be achieved in each item according to the embodiment of the present invention. In particular, since the pigments do not fall through the pores present in the natural stone, the overall color and texture can be maintained naturally, and the durability of the non-metallic mineral itself is excellent as well as the durability of the colored layer itself. And it is possible to solve the problem of discoloration in the process of processing the artificial marble and the problem of wearing or breaking of the colored layer.

[Experimental Example 2: Evaluation of color and texture of artificial marble]

The artificial marble was manufactured by the general bonding and compression molding method, and the surface coating agent of the artificial marble was prepared by mixing 100 parts by weight of the acrylic resin, 100 parts by weight of the acrylic resin, 200 to 500 parts by weight of an epoxy resin and 10 to 40 parts by weight of a styrene resin.

The color of the artificial marble and the shape of the cut surface were evaluated to evaluate each of the examples and comparative examples by indexing the following example 1 as 10. The higher the number, the better the effect.

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Color 10 14 15 2 3 2 3 Texture 10 11 13 5 3 4 5 Section formation 10 12 14 5 7 3 5

Referring to Table 3 and Table 2, it can be confirmed that artificial marble having excellent color and texture can be manufactured according to the embodiment of the present invention. Particularly, according to the above-mentioned embodiment, there is an advantage that natural and durable artificial marble of various colors can be manufactured.

[Experimental Example 4: Evaluation of durability of artificial marble]

In the process of adhesion and compression molding of artificial marble, a mixture of 100 parts by weight of the epoxy resin adhesive of Production Example 1 and the epoxy resin, and 100 parts by weight of the epoxy resin adhesive of artificial marble using the epoxy resin as an adhesive in Example 1, And 100 parts by weight of an inorganic adhesive mixed in a weight ratio of 210: 1 by weight of potassium dihydrogenphosphate were evaluated for durability and scratch resistance for Preparation Example 2 of an artificial marble using an adhesive.

The above-mentioned evaluation result was 10 in Production Example 1 and indexed based on the evaluation. The results are shown in Table 4 below. The higher the number, the better the effect.

Production Example 1 Production Example 2 durability 10 33 My Scratchy Castle 10 25

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of the right.

Claims (4)

On the surface of non-metallic minerals with an average diameter of 0.3 to 200 mm
The group consisting of lithium silicate, sodium silicate, potassium silicate, calcium silicate, magnesium silicate, colloidal silica, and mixtures thereof A first colored layer to which a first coloring paint containing any one selected and an inorganic pigment is applied,
The surface of the first colored layer may be coated with a urethane resin, an epoxy resin, an acrylic resin, a silicone resin, a polyvinyl acetate resin, a polyamide resin ), A polycarbonate resin, and a mixture thereof, and a second coloring paint comprising a mixture of any one selected from the group consisting of an organic pigment, an inorganic pigment and a mixture thereof A second colored layer,
Wherein the surface of the second colored layer is coated with at least one selected from the group consisting of urethane resin, epoxy resin, acrylic resin, silicone resin, vinyl acetate resin, polyamide resin, polycarbonate resin and mixtures thereof, lithium silicate, sodium silicate, , A coloring layer comprising a coating layer coated with a coating liquid comprising a mixture of one selected from the group consisting of calcium silicate, magnesium silicate, and mixtures thereof, and a surfactant,
Artificial marble using colored nonmetallic minerals. The method according to claim 1,
Wherein the first colored layer further comprises potassium dihydrogen phosphate.
Artificial marble using colored nonmetallic minerals. The method according to claim 1,
Further comprising an inorganic filler and an epoxy resin adhesive
Artificial marble using colored nonmetallic minerals. Selecting a nonmetallic mineral having an average diameter of 0.3 to 200 mm,
The surface of the nonmetallic mineral that has undergone the sorting step is coated on the surface of lithium silicate, sodium silicate, potassium silicate, calcium silicate, magnesium silicate, colloidal silica, silica, and a mixture thereof, and a first coloring paint comprising an inorganic pigment, wherein the first coloring layer is applied to the first coloring layer,
Forming a first colored layer by drying the non-metallic mineral through the first colored layer applying step,
An urethane resin, an epoxy resin, an acrylic resin, a silicone resin, a polyvinyl acetate resin, or the like is coated on the surface of the non- , A polyamide resin, a polycarbonate resin, and a mixture thereof, and any one selected from the group consisting of organic pigments, inorganic pigments, and mixtures thereof. A second colored layer applying step of applying a second colored coating,
A second colored layer forming step of forming a second colored layer by drying the nonmetal mineral through the second colored layer applying step,
Wherein the second colored layer is formed on the surface of the nonmetallic mineral after the formation step by using any one selected from the group consisting of urethane resin, epoxy resin, acrylic resin, silicone resin, vinyl acetate resin, polyamide resin, polycarbonate resin, A coating liquid applied by a coating liquid containing a mixture of one selected from the group consisting of lithium silicate, sodium silicate, potassium silicate, calcium silicate, magnesium silicate, and mixtures thereof, and a surfactant;
And a coating layer forming step of forming a coating layer by heat-treating the non-metallic mineral coated with the coating solution at 100 to 800 ° C. while stirring the non-metallic mineral;
A mixing step of mixing the colored nonmetallic mineral with an inorganic filler to prepare a mixed raw material;
A compression molding step of mixing artificial marble with the mixed raw material by mixing with an epoxy resin and performing compression molding;
And a polishing step of polishing the surface of the artificial marble
Method of manufacturing artificial marble using colored nonmetallic mineral.