KR101425512B1 - Artificial Marble Having Natural Pattern and Partial Luminescent, and Method of Preparing The Same - Google Patents

Abstract

The present invention relates to a process for the preparation of an artificial marble comprising: (A) 5 to 15% by weight of an unsaturated polyester resin, (B) 75 to 92% by weight of a silica containing compound, and (C) 3 to 10% by weight of an amorphous phosphorescent chip, Wherein the luminous chip (C) has a distribution area of 3 to 10% of the artificial marble sectional area, and a method of manufacturing the artificial marble having a natural stone texture and partial luminous efficiency. Without reducing the surface hardness of the present invention, artificial marble has a natural stone texture in a bright place and a new texture due to a phosphorescent effect in a dark place.

Description

TECHNICAL FIELD The present invention relates to an artificial marble having a natural stone texture and a partial accumulative property, and a method for producing the same.

TECHNICAL FIELD The present invention relates to an artificial marble having a natural stone texture and a partial accumulative property, and a method of manufacturing the same. More specifically, the present invention relates to a method for producing a color filter comprising an unsaturated polyester resin, a natural stone particle, an inorganic filler, a pigment (an organic pigment, an inorganic pigment or a mixture thereof) and a phosphorescent chip, The present invention relates to an artificial marble which exhibits a new texture due to a phosphorescent effect.

Natural stones such as granite and marble have been used as decorative materials since ancient times because of their beautiful surface pattern. Recently, they have been spotlighted as high-quality textured materials, and their demand in the fields of flooring, walls, . As a result, expensive natural stone alone can not meet the demand, and a variety of artificial stones have been developed.

Artificial stones are widely used in general artificial stones made by adding various kinds of mixed materials such as inorganic fillers, coloring agents and hardeners to acrylic or unsaturated polyester base resins and compounds which are mixed with inorganic (silica-based) natural minerals and binder resins, It is classified as resin-reinforced gemstone (also called "engineered stone"), which is made by compression molding with vacuum vibration to show the texture of natural stone as it is.

The resin-reinforced natural stone can be manufactured to exhibit various colors and textures depending on the kinds of natural minerals to be mixed, the colors of resins or pigments, and the stirring process, and natural minerals are used as main raw materials, The demand has been greatly increased recently.

The resin-reinforced natural stone produced as described above may be prepared to have a multicolor tone by mixing monochromatic pigments or pigments of different colors and mixing different resin colors in a mixer, or by using chips to have a natural stone texture .

As an attempt to improve the function and performance of such artificial marble, attempts have been made to impart a luminescent function to artificial marble by using a luminescent material such as a luminous luminescent material such as a phosphorescent material or an ultraviolet luminescent material that emits light accompanying ultraviolet absorption .

Conventional artificial marble, however, was a method of coating the surface with a phosphorescent pigment or using a condensing chip to create texture. When the photoconductive chip is used, it can not exhibit a uniform condensation property. When the phosphorescent pigment is coated on the surface, there is a problem that the texture of the surface is different from that of natural marble.

Conventional artificial marble has also used excessive amounts of phosphorescent pigments to achieve sufficient luminous performance. However, phosphorescent pigments are expensive materials, and if they are used excessively, they will be a big obstacle to commercialization due to an increase in manufacturing cost. Therefore, there has been a demand for achieving sufficient accumulative properties while minimizing the use of phosphorescent pigments.

Therefore, the inventors of the present invention have studied an appropriate blend ratio and have found that the blend of the artificial marble, which maintains the texture of the artificial marble close to the natural stone, To develop.

It is an object of the present invention to provide an artificial marble having a partial luminous pattern.

Another object of the present invention is to provide an artificial marble having a natural stone texture and a partial luminous pattern.

Another object of the present invention is to provide an artificial marble having a partial luminous pattern without lowering the surface hardness.

Another object of the present invention is to provide artificial marble having a natural stone texture and a partial phosphorescence pattern and having the same phosphorescent texture in all cross sections.

It is still another object of the present invention to provide a method of manufacturing artificial marble having a natural stone texture and a partial luminous pattern and having the same luminous texture in all cross sections.

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

In order to solve the above problems, the present invention may include, as one embodiment, (A) an unsaturated polyester resin, (B) a silica-containing compound, and (C) an amorphous phosphorescent chip, The artificial marble having a partial accumulative property in which the distribution area of the chip (C) is 3 to 10% of the artificial marble cross-sectional area.

The artificial marble may include 5 to 15% by weight of the unsaturated polyester resin (A), 75 to 92% by weight of the silica-containing compound (B), and 3 to 10% by weight of the amorphous phosphorescent chip (C).

The artificial marble is preferably an organic pigment, an inorganic pigment or a mixture thereof (D) in an amount of 0.01 to 1 part by weight based on 100 parts by weight of the composition comprising the unsaturated polyester resin (A), the silica-containing compound (B) Weight parts.

In another embodiment of the present invention, the phosphorescent chip (C) contains 5-15 wt% of the unsaturated polyester resin (A), 80-93 wt% of the silica containing compound (B), 2-5 wt% of the phosphorescent pigment (E) %. ≪ / RTI >

In another embodiment of the present invention, the silica-containing compound (B) may comprise 50 to 80% by weight of the natural stone particles (B1) and 20 to 50% by weight of the inorganic filler (B2) have.

In another embodiment of the present invention, the natural stone particles (B1) may be a mixture of a silica sand (b1) having an average particle size of 0.1 to 1.2 mm and a quartz chip (b2) having an average particle size of 1.2 to 9.0 mm, It is preferable that 50 to 85% by weight of the silica sand (b1) and 15 to 50% by weight of the quartz chip (b2) are contained relative to 100% by weight of the particles (B1).

In another embodiment of the present invention, the inorganic filler (B2) is preferably a silica powder having an average particle diameter of 20 m or less.

In another embodiment of the present invention, the average particle diameter of the phosphorescent chip (C) is preferably 0.1 to 5.6 mm.

In order to solve the other technical problem of the present invention, the present invention provides a method for preparing a phosphorescent chip compound by mixing an unsaturated polyester resin (A), a silica-containing compound (B) and a phosphorescent pigment (E) A step of dispersing the phosphorescent chip compound in a predetermined form using a dispersing facility, a step of forming a plate material having a phosphorescent effect by applying a vacuum-vibration-compression molding method to the phosphorescent chip compound distributed in a predetermined form, (A), a silica-containing compound (B), an amorphous phosphorescent chip (C) and an organic pigment, an inorganic pigment or a mixture (D) thereof are mixed to obtain an amorphous phosphorescent chip Preparing an artificial marble compound, dispersing the artificial marble compound in a form using a dispersing facility, and dispersing the uniformly distributed artificial marble compound in a vacuum- Copper - by compression-molding provides a method comprising the step of producing the artificial marble.

The artificial marble of the present invention has a natural stone texture in a bright place and a new texture due to a partial phosphorescence effect in a dark place without lowering the surface hardness.

Fig. 1 is a photograph of a partial axial artificial marble of the present invention taken in a room lighting and a dark room.
2 is a photograph of the photoluminescent chip of the present invention taken in a room lighting and a dark room.
3 is a photograph of the artificial marble of Example 1. Fig.
Fig. 4 is a photograph of artificial marble of Example 2; Fig.
5 is a photograph of artificial marble of Comparative Example 1. Fig.
6 is a photograph of artificial marble of Comparative Example 2. Fig.
7 is a graph showing a change in luminance with time after the light source is removed.

Hereinafter, the present invention will be described in detail.

Accumulation  Artificial marble

(A), a silica-containing compound (B), and an amorphous phosphorescent chip (C). The present invention relates to an artificial marble having a natural stone texture and a partial phosphorescent effect, .

As shown in FIG. 1, the artificial marble of the present invention has the appearance and texture of a conventional natural stone as a whole in a bright place, and a partial luminous pattern is formed due to the luminous chip when illumination is turned on.

The partial photoluminescence pattern of the artificial marble of the present invention can be variously formed by controlling the content of the phosphorescent chip (C).

In the embodiment of the present invention, the artificial marble contains 5-15 wt% of unsaturated polyester resin (A), 75-92 wt% of silica-containing compound (B), and 3-10 wt% of amorphous phosphorescent chip (C) .

Since the artificial marble has a small content of unsaturated polyester resin and a large amount of natural stone particles and inorganic filler, it has a natural stone appearance and texture and exhibits a partial luminous effect depending on the distribution of the luminous chip (C).

Further, since the luminous chip C is uniformly distributed throughout the plate of the artificial marble, the same luminous texture is exhibited on all the end faces of the artificial marble, that is, the upper face, the lower face, The artificial marble is produced in the above mixing ratio, and thus the distribution area of the luminous chip (C) in all cross sections of the artificial marble is 3 to 10% of the artificial marble sectional area.

Hereinafter, each component constituting the artificial marble of the present invention will be specifically described.

(A) an unsaturated polyester resin

In the present invention, the resin component encapsulates the natural stone particles (B1) and the inorganic filler (B2), which are components forming the skeleton of the artificial marble, and binds the whole together with the crosslinking agent. When the artificial marble is formed, the elasticity or tensile strength .

It is most preferable to use UPE resin (Unsaturated Polyester resin) having excellent bonding strength with natural stone particles and the like as the resin component of the present invention.

The unsaturated polyester resin used in the present invention is conventionally known in the art, and the polyvalent acid and / or polyhydric alcohol compound as an esterification reaction product of a polyvalent acid and a polyvalent alcohol includes an unsaturated portion.

Examples of the polyvalent acid include polycarboxylic acids, polycarboxylic acid anhydrides, polycarboxylic acid halides and polycarboxylic acid esters. Specific examples of the unsaturated polycarboxylic acids include maleic acid, maleic anhydride, fumaric acid, There may be used chloromaleic acid, ethyl maleic acid, itaconic acid, citraconic acid, geronic acid, lyroconic acid, mesaconic acid, aconic acid, ethylenetradecarboxylic acid or mixtures thereof. Further, phthalic acid, isophthalic acid, terephthalic acid, succinic acid, or a mixture thereof, which are conventionally used in the production of a polyester resin, may be used.

Examples of the polyhydric alcohol include dihydric alcohols such as ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, 1,3-butanediol, 1,6-hexanediol, neopentyl glycol and 1,4- , Trihydric alcohols such as pentaerythritol, and the like, or mixtures thereof. Specific examples of the unsaturated polyhydric alcohols include butenediol, pentenediol, allyl or vinyl glycerol ether, allyl or vinylpentaerythritol, or a mixture thereof.

The unsaturated polyester resin preferably has a molecular weight of 70,000 to 100,000. The larger the molecular weight of the unsaturated polyester resin is, the better the binding force with the natural stone particles is, and even if a part of the resin is shaved in the polishing process, the natural stone particles exposed to the outside can be effectively fixed. If the molecular weight of the unsaturated polyester resin is less than 70,000, the natural stone particles may fall off from the surface of the artificial marble. If the molecular weight exceeds 100,000, the viscosity of the natural stone particles is too large to mix well with the natural stone particles.

The unsaturated polyester resin is contained in an amount of 5 to 15% by weight based on the total weight of the artificial marble compound. If the unsaturated polyester resin is contained in an amount of less than 5% by weight, the bonding strength with the natural stone particles may be lowered, and if it exceeds 15% by weight, the appearance and texture of the natural stone may be lost.

(B) a silica-containing compound

The silica-containing compound (B) of the present invention can be contained in an amount of 75 to 92% by weight based on 100% by weight of the artificial marble composition comprising the unsaturated polyester resin (A) and the silica-containing compound (B) have. This is because the silica-containing compound is contained in a high content as in the above range, so that the appearance and texture close to the natural stone can be formed.

The silica-containing compound (B) of the present invention may contain 50 to 80% by weight of the natural stone particles (B1) and 20 to 50% by weight of the inorganic filler (B2) based on 100% by weight of the silica-containing compound.

(B1) Natural stone particles

The artificial marble of the present invention essentially contains natural stone particles to form a natural stone-like appearance and texture.

The natural stone particles may use various kinds of natural aggregates obtained from nature, but it is preferable to use natural stone particles having transparency in order to increase the luminous effect. The reason why the natural stone particles having transparency is used is that it facilitates the dispersion or diffuse reflection in the artificial marble, thereby allowing most of the phosphorescent pigment to absorb the light energy.

As the natural stone particles having transparency, natural stone particles made of silica sand, quartz chips, quartz, or a mixture thereof can be used.

The natural stone particles of the present invention preferably use particles having an average particle diameter of 0.1 to 9.0 mm. When the natural stone particles having an average particle size of less than 0.1 mm are used in the blend of the present invention, the light hiding power by the fine particle composition is increased, resulting in a decrease in the luminous performance. Although the phosphorescent performance can be improved by increasing the blending ratio of the phosphorescent pigment, since the phosphorescent pigment is relatively expensive, the economical efficiency may be reduced due to the increase of the raw material cost when the usage amount is increased. On the other hand, when the average particle diameter exceeds 9.0 mm, the strength of the artificial marble may be lowered.

Particularly, in the present invention, the natural stone particles (B1) used in the artificial marble compound are preferably mixed with the silica sand (b1) and the quartz chip (b2) More preferably, the average particle size of the quartz chip (b2) is 1.2 to 9.0 mm.

When the silica sand (b1) and the quartz chip (b2) contain 50 to 85 wt% of the silica sand (b1) and 15 to 50 wt% of the quartz chip (b2) relative to 100 wt% of the entire natural stone particles (B1) The texture is the best.

In the present invention, the natural stone particles (B) are contained in an amount of 50 to 80% by weight based on 100% by weight of the silica-containing compound. The reason for this is that by including the natural stone particles in a high content as in the above range, the appearance and texture close to the natural stone can be formed.

(B2) Inorganic filler

In the present invention, an inorganic filler (C) having a particle diameter smaller than that of the natural stone particles (B1) may be further included. Such an inorganic filler serves to minimize the amount of the resin component used in the whole compounding of the artificial marble, thereby maximizing the appearance and texture of the natural marble and contributing to the densification of the artificial marble.

Examples of the inorganic filler (B2) include silica powder, aluminum hydroxide, glass powder, quartz powder, calcium carbonate and the like, and it is most preferable to use silica powder which is the same component as the natural stone particles.

It is most preferable that the inorganic filler has an average particle diameter of 20 m or less.

In the present invention, the inorganic filler comprises 20 to 50% by weight based on 100% by weight of the silica-containing compound. When the content of the inorganic filler is less than 20% by weight, the product is poorly molded and the mechanical properties are deteriorated. When the content of the inorganic filler exceeds 50% by weight, the content of the unsaturated polyester resin increases, There is a problem.

(C) Luminous chip

The phosphorescent chip of the present invention is a component for imparting a partial phosphorescence effect to artificial marble. The phosphorescent chip has an appearance similar to that of existing natural stone particles in a bright place, as shown in Fig. 2, The phosphorescent pigment is expressed by the phosphorescent pigment.

In order to exhibit an excellent phosphorescent effect, the phosphorescent chip of the present invention is produced by preparing a phosphorescent chip compound at a ratio of 5 to 15% by weight of an unsaturated polyester resin, 80 to 93% by weight of a silica containing compound and 2 to 5% by weight of a phosphorescent pigment (E) , Which is molded into a plate and then crushed to produce an amorphous chip.

The unsaturated polyester resin (A) is preferably the same as the resin for artificial marble compound to increase the bonding force. The unsaturated polyester resin (A) is preferably contained in an amount of 5 to 15% by weight based on the total weight of the phosphorescent chip compound.

As the natural stone particles (B1), those having an average particle diameter of 0.1 to 9.0 mm are most preferably used. When the natural stone particles having an average particle size of less than 0.1 mm are used in the blend of the present invention, the light hiding power by the fine particle composition is increased, resulting in a decrease in the luminous performance. Although the phosphorescent performance can be improved by increasing the blending ratio of the phosphorescent pigment, since the phosphorescent pigment is relatively expensive, the economical efficiency may be reduced due to the increase of the raw material cost when the usage amount is increased. On the other hand, when the average particle diameter exceeds 9.0 mm, the strength of the artificial marble may be lowered due to the increase of the particle diameter of the produced phosphorescent chip.

The natural stone particles (B1) include 50 to 80% by weight based on the total weight of the luminous chip (C). By including the natural stone particles in a high content as in the above range, the phosphorescent chip having an appearance and texture similar to those of natural stone particles can be formed.

The inorganic filler (B2) is preferably the same inorganic filler as the filler used in the artificial marble compound, and comprises 20 to 50% by weight based on the total weight of the phosphorescent chip (C). When the content of the inorganic filler is less than 20% by weight, the product is poorly molded and the mechanical properties are deteriorated. When the content of the inorganic filler exceeds 50% by weight, the content of the unsaturated polyester resin increases, This is because a problem occurs.

The phosphorescent pigment (E) is a component that functions to impart the photostimulating property to the phosphorescent chip (C) and the artificial marble of the present invention. As the phosphorescent pigment, a conventional phosphorescent pigment can be used. Examples thereof include strontium aluminate Pigments or zinc sulfide pigments may be used.

The phosphorescent pigment preferably has an average particle diameter of 6 to 150 mu m. When the average particle diameter of the phosphorescent pigment is less than 6 탆, the light emitting performance may be deteriorated. When the average particle diameter exceeds 150 탆, the light irradiation time required for initial saturation is prolonged.

On the other hand, since the phosphorescent pigment is an expensive substance, it is very important in the present invention to maximize the luminous performance of the artificial marble while minimizing the use ratio of the phosphorescent pigment.

Therefore, the phosphorescent pigment is preferably used in an amount of 2.0 to 5.0% by weight based on the total weight of the phosphorescent chip (C). When the phosphorescent pigment is used in an amount less than 2.0% by weight in the blend ratio of the present invention, sufficient phosphorescent performance can not be attained. When it exceeds 5.0% by weight, it is not preferable from the economical point of view. Can not be expected to improve.

The luminous chip C may further include a curing agent f1, a curing accelerator f2 and a crosslinking agent f3 in the same manner as the artificial marble compound of the present invention. The curing agent is used in an amount of 0.1 to 0.3 parts by weight based on 100 parts by weight of the luminous chip composition comprising the unsaturated polyester resin (A), the silica-containing compound (B) and the phosphorescent pigment (E), and the curing accelerator is used in an amount of 0.01 to 0.03 parts by weight . The crosslinking agent is preferably a silane crosslinking agent and is used in an amount of 0.05 to 0.15 parts by weight per 100 parts by weight of the luminous chip composition comprising the unsaturated polyester resin (A), the silica-containing compound (B) and the phosphorescent pigment (E) Weight part is preferably used.

Since the luminous chip (C) of the present invention produced by mixing the above components is a component added to the artificial marble compound, the average particle diameter of the luminous chip (C) is within the range of 0.1 to 9.0 mm , More preferably 0.1 to 5.6 mm.

(D) Oil / Inorganic pigment

In the present invention, the organic / inorganic pigments are used for introducing a color representing the photostability. The organic and inorganic pigments may be azo pigments or phthalocyanine pigments and may be used in an amount of 0.01 to 1.0 part by weight per 100 parts by weight of the composition comprising the unsaturated polyester resin (A), the silica-containing compound (B) and the phosphorescent chip (C) Is preferably used.

Other additives

In the present invention, a curing agent (f1) may be used for curing the artificial marble, and a curing accelerator (f2) may be used for promoting the curing action. The curing agent is preferably used in an amount of 0.1 to 0.3 parts by weight based on 100 parts by weight of the composition comprising the unsaturated polyester resin (A), the silica-containing compound (B) and the phosphorescent chip (C), and the curing accelerator is used in an amount of 0.01 to 0.03 parts by weight Do.

Further, a crosslinking agent (f3) may be used for bonding the unsaturated polyester resin of the present invention with the natural stone particles and the inorganic filler. As the crosslinking agent, it is preferable to use a silane crosslinking agent. It is preferable to use 0.05 to 0.15 parts by weight based on 100 parts by weight of the composition comprising the unsaturated polyester resin (A), the silica-containing compound (B) and the phosphorescent chip (C) desirable.

Manufacturing method of artificial marble

The artificial marble of the present invention is produced by incorporating the unsaturated polyester resin (A), the silica-containing compound (B) and the phosphorescent chip (C) as constituent elements as described above.

First, a method of manufacturing the phosphorescent chip will be described.

Of phosphorescent chips  Produce

The preparation of the phosphorescent chip may include preparing a phosphorescent chip compound, dispersing the phosphorescent chip compound in a predetermined form using a dispersing facility, phosphorescent chip compound distributed in a predetermined form by a vacuum-vibration-compression molding method, Forming step of a plate material having an effect, and a step of crushing a plate material having a phosphorescent effect to produce an amorphous phosphorescent chip.

5 to 15% by weight of the unsaturated polyester resin (A), 80 to 93% by weight of the silica-containing compound (B) and 2 to 5% by weight of the phosphorescent pigment (E) are mixed in the preparation of the phosphorescent chip compound.

The preparation of the phosphorescent chip compound is carried out in the same manner as in the preparation of the phosphorescent chip compound (A), the silica-containing compound (B) and the phosphorescent pigment (E) in an amount of 0.1 to 0.3 parts by weight, 0.01 to 0.03 parts by weight of a silane crosslinking agent (f2), and 0.05 to 0.15 parts by weight of a silane crosslinking agent (f3).

Manufacture of artificial marble

The artificial marble is prepared by preparing an artificial marble compound, dispersing the luminous chip compound in a predetermined form using a dispersing facility, and applying a vacuum-vibration-compression molding method to the plate material forming step having a luminous effect do.

5 to 15% by weight of the unsaturated polyester resin (A), 75 to 92% by weight of the silica-containing compound (B) and 3 to 10% by weight of the amorphous phosphorescent chip (C) are mixed in the step of preparing the artificial marble compound.

The artificial marble compound preparation step may further comprise an organic pigment, an inorganic pigment, or a mixture (D) thereof in an amount of 100 parts by weight based on 100 parts by weight of the composition containing the unsaturated polyester resin (A), the silica-containing compound (B), and the amorphous phosphorescent chip (C) (F1) and 0.01 to 0.03 part by weight of a curing accelerator (f2), and 0.05 to 0.15 part by weight of a silane crosslinking agent (f3) is further included can do.

When the artificial marble compound is prepared, the compound is uniformly distributed in a certain form using a dispersing facility.

When the artificial marble compound is uniformly distributed in a certain form, the artificial marble compound can be vacuum-vibration-compression-molded to produce the artificial marble.

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

Preparation of sample

(A) Unsaturated polyester (UPE) resin

Aekyung Chemical M900 artificial marble (UPE) resin was used.

(B) a silica-containing compound

(B1) Natural stone particles

(b1) a silica sand

A silica sand having an average particle diameter of 0.1 to 1.2 mm was used.

(b2) quartz chip

A quartz chip with an average particle size of 1.2 to 9.0 mm in the 21 st century silica yarn was used.

(B2) Inorganic filler

Silica powder having an average particle size of 8 to 20 탆 in the 21st century was used.

(D) Oil / Inorganic pigment

TR92 of Winsin Pigment Company. 318M. Y6R product was used.

(E) Phosphorescent pigment

A PL120 phosphorescent pigment of Yuk Sung Chemical having an average particle diameter of 25 mu m was used.

(F) Other additives

(f1) Luperox P of Century Arcane was used as a hardener.

(f2) Cyanide 6% -Cobalt was used as a curing accelerator.

(f3) As a crosslinking agent, a WD70 silane coupling agent of Gudam Co. was used.

Property evaluation method

(1) Luminous chip distribution area: The ratio of the area of the photoconductive amorphous portion to the total surface area of artificial marble was measured.

(2) Natural stone texture: Whether artificial marble forms a texture close to a natural stone is classified as good or bad.

(3) Surface hardness (Barcol): Barcol hardness was measured by applying ASTM D 2583 measurement method.

(4) Luminance per hour: The luminance of the phosphorescent chip itself was measured until it reached saturation with DN65 commercial light source, after 5, 10, 20 and 60 minutes.

Example  And Comparative Example

Example 1

(1) Manufacturing of phosphorescent chips

14% by weight of unsaturated polyester resin, 30% by weight of silica sand, 27% by weight of quartz chips, 27% by weight of silica powder, 2% by weight of a luminous pigment, 0.15% by weight of a curing agent, 0.015% by weight of a curing accelerator, Respectively.

(2) Manufacture of artificial marble

10 wt% of unsaturated polyester resin, 34 wt% of silica sand, 30 wt% of quartz chip, 24 wt% of silica powder, 0.5 wt% of organic pigment or inorganic pigment or mixture thereof, 3 wt% 0.015% by weight of a curing accelerator, and 0.08% by weight of a silane crosslinking agent. The content thereof is shown in Table 2 below.

The phosphorescent chip and artificial marble were prepared and their physical properties were measured. The results are shown in Table 2.

Example 2 and Comparative Examples 1 to 5

The phosphorescent chip and the artificial marble were produced in the same manner as in Example 1 except that the content was as shown in Table 1 below.

Figs. 3 and 6 show the photoluminescent effect of the partially-shaking artificial marble of Example 1, Example 2, Comparative Example 1 and Comparative Example 2. Fig. FIG. 7 shows a change in luminance after the light source is removed.

As shown in Table 2, it can be seen that Examples 1 and 2 had a natural stone texture and did not lower the surface hardness, so that the initial brightness was excellent and the phosphorescent effect lasted for a long time.

On the other hand, in Comparative Example 1 using a small amount of a phosphorescent pigment and Comparative Example 2 using a small amount of a phosphorescent chip, it was confirmed that the phosphorescent effect was lowered. In Comparative Example 3, in which the phosphorescent chip was used in an excessive amount, the natural stone texture was lowered. In Comparative Examples 4 and 5, in which the unsaturated polyester resin was deviated from the preferred range of the present invention, the natural stone texture was poor and the surface hardness was lowered .

Claims (19)

(A) from 5 to 15% by weight of an unsaturated polyester resin;
(B) 75 to 92% by weight of a silica-containing compound; And
(C) 3 to 10% by weight of an amorphous phosphorescent chip;
, And the distribution area of the luminous chip (C) in all sections of the artificial marble is 3 to 10% of the artificial marble sectional area,
Characterized in that the luminous chip (C) comprises 5 to 15% by weight of an unsaturated polyester resin (A), 80 to 93% by weight of a silica containing compound (B) and 2 to 5% by weight of a phosphorescent pigment (E) Artificial marble with natural stone texture and partial accumulation.
The artificial marble according to claim 1, wherein the silica-containing compound (B) is contained in an amount of 75 to 92% by weight based on 100% by weight of the entire artificial marble composition.
delete The artificial marble according to claim 1, wherein the artificial marble comprises an organic pigment, an inorganic pigment, or a mixture thereof (D (a)), based on 100 parts by weight of the composition comprising the unsaturated polyester resin (A), the silica- ) 0.01 to 1 part by weight based on the total weight of the artificial marble.
delete The method according to claim 1, wherein the silica-containing compound (B) comprises 50 to 80% by weight of the natural stone particles (B1) and 20 to 50% by weight of the inorganic filler (B2) Artificial marble with full condensation.
The artificial marble according to claim 6, wherein the natural stone particles (B1) have an average particle size of 0.1 to 9.0 mm.
The natural stone composition according to claim 6, wherein the natural stone particles (B1) are a mixture of a silica sand (b1) having an average particle diameter of 0.1 to 1.2 mm and a quartz chip (b2) having an average particle size of 1.2 to 9.0 mm. Artificial marble with partial condensation.
9. The method according to claim 8, wherein the natural stone particles (B1) comprise 50 to 85% by weight of a silica sand (b1) and 15 to 50% by weight of a quartz chip (b2) based on 100% by weight of the natural stone particles (B1) Artificial marble with natural stone texture and partial accumulation.
The artificial marble according to claim 6, wherein the inorganic filler (B2) is a silica powder having an average particle diameter of 20 m or less.
The artificial marble according to claim 1, wherein the average particle size of the phosphorescent pigment (E) is 6 to 150 탆.
The artificial marble according to claim 1, wherein the average particle size of the phosphorescent chip (C) is 0.1 to 5.6 mm.
Preparing a phosphorescent chip compound by mixing the unsaturated polyester resin (A), the silica-containing compound (B), and the phosphorescent pigment (E);
Dispersing the phosphorescent chip compound in a predetermined form using a dispersion facility;
A step of forming a plate material having a phosphorescent effect by applying a vacuum-vibration-compression molding method to the phosphorescent chip compound dispersed in a predetermined form;
A step of crushing a plate material having a phosphorescent effect to produce an amorphous phosphorescent chip (C);
Preparing an artificial marble compound by mixing an unsaturated polyester resin (A), a silica-containing compound (B), an amorphous phosphorescent chip (C) and an organic pigment, an inorganic pigment or a mixture thereof (D);
Dispersing the artificial marble compound in a predetermined form using a dispersing facility; And
Producing an artificial marble by vacuum-vibration-compression molding a uniformly distributed artificial marble compound;
Lt; / RTI >
The artificial marble compound comprises 5 to 15% by weight of an unsaturated polyester resin (A), 75 to 92% by weight of a silica-containing compound (B), and 3 to 10% by weight of an amorphous phosphorescent chip (C)
Characterized in that the phosphorescent chip compound comprises 5 to 15% by weight of an unsaturated polyester resin (A), 80 to 93% by weight of a silica containing compound (B) and 2 to 5% by weight of a phosphorescent pigment (E) And a method for producing an artificial marble having partial shrinkage.
delete delete The phosphorescent chip compound according to claim 13, wherein 0.1 to 0.3 parts by weight of a curing agent (f1) is added to 100 parts by weight of a compound containing an unsaturated polyester resin (A), a silica- containing compound (B) and a phosphorescent pigment (E) And 0.01 to 0.03 part by weight of a curing accelerator (f2).
14. The phosphorescent chip compound according to claim 13, wherein the phosphorescent chip compound has a silane crosslinking agent (f3) in an amount of 0.05 to 0.15 wt% based on 100 parts by weight of the compound containing the unsaturated polyester resin (A), the silica- containing compound (B) and the phosphorescent pigment (E) The method of manufacturing an artificial marble having a natural stone texture and a partial condensing property.
The artificial marble compound according to claim 13, wherein the artificial marble compound comprises 0.1 to 0.3 wt% of a curing agent (f1) relative to 100 parts by weight of a compound containing an unsaturated polyester resin (A), a silica- containing compound (B), and an amorphous phosphorescent chip (C) And 0.01 to 0.03 part by weight of a parting and curing accelerator (f2).
14. The artificial marble compound according to claim 13, wherein the artificial marble compound is a silane-based crosslinking agent (f3) in an amount of 0.05 to 0.15 The method of claim 1, further comprising the step of:

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