KR20000016222A - Artificial stone - Google Patents

Abstract

PURPOSE: An artificial stone is provided to be manufactured for having an excellent characteristic of good surface strength and surface abrasion resistance while easily adjusting the thickness at a low cost. CONSTITUTION: An artificial stone having a deep tone and gloss and a luminescent property is provided at a low cost. The artificial stone is formed by using an inorganic fine-grain component of 5 to 70 mesh, and placing an artificial stone mixture (3), in which a sum of the fine-grain component and an inorganic particulate component of at least 100 mesh amounts to at least 89 weight percent and a resin component amounts to at most 11 weight percent, onto a cured body slab (2) beforehand cured to integrally form them.

Description

Artificial stone

Conventionally, it is known that natural stone is ground to an appropriate size, and calcium carbonate and resin are mixed with it and then cured to give artificial stone. That is, for example, it describes that raw material powder, resin, and the like are mixed under reduced pressure, poured into the mold, taken out, and provided for cutting.

Moreover, the necessity of using a raw material at a predetermined mixing ratio and carrying out sufficient pressurization after putting the raw material in the mold when manufacturing artificial stone using granules and synthetic resins in natural stone is also known.

However, in the case of the artificial stone obtained by these conventional methods, since the granulation of natural stone is used, there is a problem to limit only that the color tone and the sense of depth are good.

In the conventional artificial stone, there is a drawback that the color tone of the surface is not clear anyhow. Thus, it is extremely difficult to realize the surface of the fish stone and marble baths which are transparent and deep and heavy.

The reason for this is that artificial stone differs greatly in the characteristics of reflection and absorption of light from the surface due to its composition, the size and blending of the natural granules, and the like.

Therefore, in the composition of artificial stone, the moldability is greatly influenced, and the flowability for molding is lost due to the size and ratio of the natural stone powder to be mixed with the artificial stone and the ratio of the binder resin, so that bubbles remain inside the molded product. There is a problem that the quality and strength of the artificial stone is significantly damaged.

Therefore, it is also considered to increase the amount of resin powder to fluidize and to prevent bubble generation.

However, on the other hand, increasing the amount of the resin component to prevent the generation of bubbles and to secure the fluidity for injection into the mold will adversely affect the properties of the artificial stone to be made even if it plays a role in ensuring fluidity and preventing the generation of bubbles.

The use of a large amount of the resin component is a product obtained in connection with the resination of the artificial stone product is only a powder of natural stone in the resin, the physical properties are closer to the raw material resin than the raw material. Therefore, what is called artificial stone stays in the resin product which looks like stone.

Therefore, when the defect of the conventional artificial stone is eliminated, and the granular material such as natural stone is used as a material, the obtained product has a dense structure, has a sense of depth with its clear color tone, and the natural stone such as fish spirit stone and marble. As a new artificial stone which has characteristics and makes it possible to be in any shape such as plate or fancy having excellent moldability, the inventor of the present application consists of a fine grain component having a larger particle size and a fine grain component having a smaller particle size. Furthermore, the composition which made the compounding ratio of resin into about 10 weight% or less is provided.

This artificial stone has attracted attention as being excellent in its color tone and its characteristics.

However, in the subsequent examination, this new artificial stone composition was intended to provide in-depth, leaving a problem that the cost tends to be high in terms of material composition and production of the inorganic component. In addition, it is left as a later problem to have more researched function and design of the molded article.

The invention of the present application relates to an artificial stone. More specifically, the invention of the present application has excellent characteristics such as excellent skin fit, good surface hardness and surface abrasion resistance of fish stone bath or marble bath, and in the high density, high strength and high strength artificial stone of light weight, the required thickness adjustment at low cost is required. The present invention relates to a new artificial stone that is easily improved, and provides a useful artificial stone for walls, floors, other building and civil engineering materials, and stone.

1 is a process diagram illustrating the manufacture of the artificial stone of the present invention. 2 is another process diagram. 3 and 4 are each a principal part perspective view showing another manufacturing example.

Best Mode for Carrying Out the Invention

Best Mode for Carrying Out the Invention A more detailed embodiment will be described below with respect to the invention of the present application.

First, the artificial stone mixture as a raw material constituting the artificial stone of the present invention is roughly divided into three components. One is a fine grain of 5 to 70 mesh size as a main component, which is a mineral fine component of minerals such as silica, olivine, feldspar, fluorite, mica, and natural stone such as granite, metamorphic rock, glass, ceramics, metal, etc. This is used.

In addition, a fine component of less than 100 mesh is used together with this fine grain component. As this particulate component, various particulate components, natural or artificial, are listed. For example, calcium carbonate and aluminum hydroxide are easy to obtain particulate components.

As a part of this particulate component, components such as manganese dioxide, titanium dioxide, zirconium silicate, iron oxide, etc., for adjusting color tone, and components such as antimony trioxide, boron compound, bromine compound, etc. for imparting flame retardancy may be added and blended.

There is a resin monomer component as the third component. This resin monomer component can be selected from a wide range of thermosetting materials in the case of type and curing after integral molding.

For example, in constituting acrylic resin, methacrylic resin, unsaturated polyester resin, etc., there are monomers such as acrylic acid ester and methacrylic acid ester, and in particular, from the viewpoint of color tone and physical and chemical properties of artificial stone after curing, Methyl methacrylate is exemplified as representative.

Fine-grained components, such as a natural stone, function as a main factor in the external appearance and physical property of the artificial stone obtained. In particular, by exposing a part, it becomes the main cause of appearance color and shape in accordance with other components.

The fine component is considerably thinner than the level of 100 mesh compared to the fine grain component, and is located to fill the space between the grains invading between the particles of each fine grain component, contributing to obtaining the properties of the hardness and softness of the artificial stone obtained. It is preferable that the fine grain component and the fine grain component be 0.5: 1 to 5: 1 in the weight ratio.

In addition, the resin component contributes to joining the whole of the fine-grained components, such as natural stone, which is a component that forms the skeleton, and the fine-grained components, surrounding them, and gives elasticity or tensile strength to the product when the artificial stone is completed. .

In the present invention, the composition ratio of these components is important. In particular, what is important is the composition ratio of a resin component and another component. In the present invention, one of the features of enabling a high-density product having a dense structure is one of the characteristics, but the high density means that the fine and fine components contained in the artificial stone products are present at a high density, for example, the density is 2.2g / Said more than cm <3>, it exceeds the range contained in the conventional artificial stone.

That is, the more the composition ratio of fine grain components, such as natural stone which is a skeletal component, becomes closer to natural stone, but when too many, it becomes hard and cannot be used as a product. Moreover, the physical properties of the obtained product become poor and cannot be used by a normal usage.

Moreover, even if it uses a lot of fine granules, what is obtained other than having a disadvantage, such as being hard, becomes unpretty and hard to say a stone.

Therefore, the usage-amount ratio of a fine grain component and a fine grain component is limited. That is, it must be 85% or more by weight ratio, Preferably it is 90% or more. Moreover, if it exceeds 95%, the product becomes vulnerable and only hard to use is obtained. In addition, if it is less than 89%, the product is too flexible and no stone-like property is obtained, and the use range is in the same range as that of the resin plate.

The advantage is that other than fine grains and fine grains, such as natural stone, that is, the resin component should not exist beyond 11% by weight even in the product.

If the resin component exceeds 11%, the product becomes plastic, and it is already named only artificial stone. In addition, too small a resin component may increase the appearance of the product near its natural color, but the product becomes vulnerable and unsuitable for use. More preferably from this viewpoint, the resin component is 3 to 10% by weight.

In the artificial stone mixture of the present invention, a part or all of the inorganic fine grain components become transparent particles, and the particles or small lumps are coated with inorganic or organic substances in advance.

Such coating of the transparent fine grain component is realized by coating and curing the resin on the surface of the transparent fine grain component, or baking and coating inorganic materials such as water glass and glaze for ceramics. In either case, the surface of the particle of the transparent fine grain component is coated with several micrometers to several tens of micrometers, for example, 5 to 50 micrometers, preferably about 20 to 30 micrometers. More specifically, for example, a composition such as acrylic resin, methacryl resin, unsaturated polyester resin, etc. is heated to about 150 to 300 ° C, or irradiated with light to coat and harden these resin compositions on the particle surface of the fine grain component. It is also possible to bake the inorganic coating by baking at a high temperature of about 800 to 1100 ° C. using a glass, glaze or the like.

These coatings greatly improve the affinity for the whole tissue of the fine grain component which functions as an artificial stone aggregate. Moreover, the strength is large and the surface hardness is also improved by mixing the particulate component and the resin component.

More importantly, the fine-grained component uses transparent natural stone or the like as described above, and the hard coating is applied to the surface thereof, so that the coating layer is partially peeled off when the surface of the artificial stone product is polished. Then, the surface texture of the partially exposed inorganic transparent fine grain particles and the coating layer around them obtains a unique effect by the reflection of light.

That is, light enters the transparent fine grain component, is reflected by the coating layer around it, and is reflected by retransmitting the transparent fine grain component. The phenomenon of light transmission and reflection is essentially different from the reflection of only the surface of the conventional artificial stone, and gives a unique sense of depth to the artificial stone product of the present invention. Get high quality marble artificial stone with deep depth.

As mentioned above, the transparent fine grain component which has a coating layer can be made into the ratio of 10 to 100% generally as whole quantity of the inorganic fine grain component mix | blended with a composition.

In addition, in the present invention, it is necessary to make the size of the inorganic fine grain component specific as mentioned above. In other words, the inorganic fine grain component is 5 to 70 mesh in size as described above. And it is good to use only the thing of the same size except a special case. It is considered to change the size of the fine grains with or without color in the case where the color is to be thickened on the top or the bottom by using the color with or without the color. Do not use because it will degrade.

On the other hand, the size of the particulate component is to be less than 100 mesh as described above. It must put enough between the particles of a fine grain component. Therefore, it is not good to be close to the size of the fine grain component particles, and more specifically, about 150 to 250 mesh.

In addition, the important thing in the artificial stone material of the present invention is that it is desired to be uniformly dispersed in any part of the post-cured portion of these artificial stone mixtures, except for the special case.

The outer surface of the hardened portion is preferably polished. That is, it is good to expose at least a part of the fine grain component in which the coating layer is partially destroyed as described above.

Polishing is a practically convenient method for surface exposing the dense texture state of the deep dense artificial stone of the present invention. Of course, it is also possible to polish a part of a product surface to expose a fine grain component, and to use it in the shape of the difference between other parts of the same surface.

Moreover, when obtaining artificial stone, it is an important problem to make the target natural stone into any color tone and designability. Eo Young-seok and marble are good targets because they are difficult to obtain from natural products and they are beautifully colored. In this case, the color is an important theme that determines the value of fish stones and marble. In natural fish stone and marble, there are many kinds of colors themselves, from completely black to white or red, and even the same color is different.

Conventionally, in the case of giving various colors to artificial stones, for example, only black ones of powders such as natural stones may be used to obtain black ones, but reproducibility is a problem to obtain intermediate colored objects. Moreover, even if given color, it was difficult to give the unique beauty of marble.

For example, even in the case of giving color using dyes and pigments, it was difficult to give beauty and depth in the past.

In addition, in this invention, a transparent thing is used as a fine grain component. For example, in order to obtain what has beauty, such as a fish stone bath and a marble bath, the fine grain obtained by grind | pulverizing a quartz type natural stone can be used as a fine grain component.

Fine grains obtained by pulverizing quartz-based natural stone have a smooth surface with a unique surface since the raw material is quartz-based. It is also colorless and transparent in many cases. Even when it has a color, it is not very strong, and when it is not transparent, it often has some degree of transparency.

Using this raw material, the color of the hardened portion obtained can be controlled by the coating layer of the fine grain component and the color tone of the resin component, and the color can be deepened by the presence of the transparent quartz fine grain component to have a beauty. can do.

For example, in the case of having a baking layer of water glass containing a white pigment as a coating layer and in the case of having a cured layer of a polyester unsaturated resin, when the polyester unsaturated resin is used as a resin component, the color of the resin is Since it is generally white with a slightly yellowish taste, the product obtained becomes a milky white with beauty, and a product of a color tone very similar to that of natural milky white marble can be obtained.

By coating the coating layer with a colorant such as a pigment or a dye, inorganic pigments such as thimonium dioxide, zirconium silicate, manganese dioxide, iron oxide, cobalt oxide, organic pigments such as azo pigments and phthalocyanine pigments, etc. By applying various dyes, it is possible to have a unique color tone having a uniform color and having depth and beauty.

In addition, in the artificial stone composition of the present invention, it is also possible to mix and use a granular colored one having a size almost equal to that of the fine grain component as a color component, and to give the color of the product.

In any case, a color reproducibility can be secured much more easily than conventional artificial stones, and there is obtained no color change and excellent in depth and beauty.

In addition, it is particularly effective to apply glazes colored in ceramics or the like to powder granules of natural transparent fine granules, and to burn them to form granules of a desired color, and to use them as fine granules. This method not only makes the color clear but also allows for a wide range of choices.

It is a crushed quartz-based natural stone that is used as a fine granular component. The same color is applied to it, and glaze is applied to it. Since not only the color itself but also the beauty and color are completely reproduced, it is hardly obtainable in the conventional coloring method.

In any case, the fine grain component in which the coating layer is formed by this baking is used at a ratio of 10 to 100% of all fine grain components.

Moreover, you may mix | blend a short fiber component for the structure | strength strength of a molded article in superposition with a color tone. For example, glass fiber, ceramic fiber, metal fiber, resin fiber, or the like can be used. Among them, glass fibers are exemplified as suitable.

These short fibers generally have a diameter of about 10 to 100 µm and a length of about 1 to 10 mm, and are used at a ratio of about 1 to 10% by weight of the fine grain component.

Here, when the cured slab in which the artificial stone mixture is typed and integrally formed will be described, the cured slab is in a pre-cured state and is not placed in a mold or placed in a mold, and the artificial stone mixture is typed and integrated. Will be.

For example, FIG. 1 injects the artificial stone mixture 3 onto the hardened body slab 2 placed in the mold 1, pressurizes the glass 4 to harden the artificial stone mixture 3 to harden the hardened body. The method of integrating the hardened part 5 to the slab 2 is illustrated. In addition, FIG. 2 illustrates the method of injecting the artificial mixture 3 into the mold 1, placing the cured slab 2 thereon and pressing the glass 4 in the same manner.

Of course, it is not limited to the example of FIG. 1 and FIG. 2, As shown in FIG. 3, the artificial stone mixture 3 is poured in the notch and spherical shape of the predetermined shape formed in the hardened body slab 2, and the hardening is carried out. The part 5 may be integrated. As shown in FIG. 4, the artificial stone mixture 3 may be poured onto the hardened body slab 2 provided with the metal 6 or the like having a predetermined shape to integrate the hardened portion 5. Many different forms are possible.

In either case, the hardened slab 2 may have various compositions such as cement or resin, or inorganic cement. However, from the point of integration with the artificial stone mixture, that is, from the point of adhesion, it is preferable that the cured slab contains a resin component and that the artificial stone mixture and the same resin as possible can be contained.

However, in this hardened body slab, it can select suitably in an inorganic compounding component, color tone, etc., and can comprise by containing industrial wastes, such as lower cost, blast furnace slab, and glass.

Thereby, even when providing an artificial stone with a certain thickness, it is formed by the above-mentioned artificial stone mixture type which uses an inexpensive hardened body slab as the other material, increases its thickness, and uses only an expensive material for the surface layer. can do.

Of course, a hardened slab may be formed by the same composition as that of the artificial stone mixture and may be type integrated with it. Unlike the case where the cured bodies are bonded to each other, integration without using an adhesive is realized with great strength.

For example, the resin may be various kinds of thermosetting resins including methacrylic resins and unsaturated polyester resins, and these resins may be used as alternative components such as aggregates, for example, blast furnace slabs, crushed glass, etc. Various inorganic slabs and the like in an incinerator can be used to form hardened slabs. They can also be reused. Although it differs according to the use which makes this hardened | cured material slab to some extent with respect to the plate | board thickness of the type-integral-molded product, for example, you may point out the thickness to about 95% of the whole plate | board thickness. In addition, the hardening slab may be formed by the same composition as the above-mentioned artificial stone mixture in the present invention as described above.

Furthermore, in the present invention, needless to say, in FIG. 2, another artificial stone mixture 3 may be cast on the cured slab 2 to have a sandwich structure.

In either case, the surface formed from the pour cured artificial stone mixture is to be the surface as a product.

In addition, in this description, the artificial stone molded body which previously formed the hardened body slab by the said artificial stone mixture, and then integrally molded and formed the curable mixture corresponding to the hardened body slab containing the said blast furnace slab etc. with respect to this formed hardened body slab is also described. It also provides this artificial stone.

In such a configuration, the artificial stone material of the present invention may be luminous or fluorescent. This is made possible by incorporating a component having fluorescent or luminous properties into the artificial stone mixture forming at least the surface of the artificial stone.

At least a part of the fine grain component, which is a skeletal component, is baked or room temperature coated with a luminous material or fluorescent substance as described above.

The coating of the transparent inorganic aggregate, in particular the fine grain component, should be coated on the surface of the particle of the transparent fine grain with several micrometers to several tens of micrometers, for example 5 to 50 micrometers, preferably about 20 to 40 micrometers. More specifically, baking can be performed by baking at a high temperature of about 120 to 1200 ° C.

The fluorescent substance to be baked may be any of fluorescent substances made of photoluminescent properties such as strontium aluminate, zinc sulfide and the like or inorganic oxides that emit light by ultraviolet irradiation.

In addition to various methods known in the art, baking may be carried out by dispersing powder particles of a photoluminescent material such as strontium aluminate, such as transparent inorganic aggregates such as fine granules in a dispersion or paste, and drying and baking.

In addition, in the coating by room temperature coating, it is also coated by using a transparent adhesive substance (binder) in the dispersion and paste.

In this configuration, the light irradiated from the outside reaches the internally baked coating material, and when the methacryl resin (MMA resin) having excellent transparency is used as the resin component, it is incident on the entire thickness direction of the artificial stone.

For this reason, incident light penetrates into the inside and emits light from the inside. That is, the light absorbing layer and the light emitting layer become thick. For this reason, photoluminescence can be performed in a short time, and luminous efficiency also becomes large.

In order to coat only the fine grain surface, the amount of luminous or photoluminescent material can be reduced.

In the present invention, at least a part of the particulate component may directly contain a luminous or fluorescent component having luminous properties of less than 100 mesh and luminescence accompanying ultraviolet absorption. Typical examples include strontium aluminate-based photoluminescent materials and zinc sulfide. These various materials will be used in the present invention.

The fine component is considerably thinner than the level of 100 meshes compared to the fine grain component, and is located to fill the space between the particles invading between the individual fine grain components, thereby contributing to obtaining the properties such as the hardness and softness of the artificial stone obtained.

In addition, in the case of the luminous or fluorescent component, it achieves the same role as the particulate component and imparts a light function of luminous or fluorescent to the artificial stone.

In this case, the mixing ratio is important for each inorganic component together with its size.

The relationship between the weight of the inorganic fine component (W ₁ ), the weight of the inorganic fine component (W ₂ ) and the weight of the luminous or fluorescent component (W ₃ )

W ₁ : (W ₂ + W ₃ ) = 1: 2 to 5: 1

W ₂ : W ₃ = 1: 2 to 10: 1

It is hoped to be.

W _1: a better than for the (W ₂ + W ₃₎ is 1: 1~4: 1 degree, and also, W _2: 1 for W _3: 1~5: 1 is better than that of about.

For the inorganic fine grain component, the ratio of the transparent inorganic fine grain component in the

(0.3-1.0) W ₁

To be in relation to

The above is important for the realization of physical properties such as strength, hardness and density as artificial stones and optical functions such as luminous or fluorescent.

Optical function

1) 30 to 100% by weight of the inorganic fine grain component as a transparent inorganic fine grain component, and more preferably 30 to 100% by weight of the inorganic fine grain component as a transparent inorganic fine grain component,

2) blending less than 100 mesh luminous or fluorescent components in specific ratio as above

It is realized as a luminous or fluorescent artificial stone. It is excellent in luminescence performance and also excellent in the economics associated with the use of expensive luminous or fluorescent components.

This is due to the use of a transparent inorganic fine granule as a transparent aggregate, and also a fine component, the light irradiated from the outside penetrates into the interior of the artificial stone, and the light energy is efficiently absorbed by the luminous or fluorescent component and the phosphorescent material This is because it is possible to maintain a high brightness for a long time because the fluorescent layer in which the luminous or fluorescent component, such as the light is dispersed, is secured to a large thickness including the inside of the artificial stone. This is because the transparent inorganic fine grain component at the time of light emission has high light transmittance due to good light transmittance.

In the method for producing the artificial stone material of the present invention by integrating molding the artificial stone mixture into a hardened slab, the slab molding is realized by compression molding by pressing at a pressure of, for example, 5 to 100 kgf / cm 2. And in this shaping | molding, it is desirable to heat for about 5 to 20 minutes at the temperature of about 90-140 degreeC at the time of compression.

In this compression molding during heating, the mold can also be vibrated with pressure to improve the fluidity of the mixed material in the mold.

The compression molding method is a molding method of a relatively simple shape like a flat molded product, and exhibits mass production effects, and is very economical since there is almost no waste of material.

In addition, in this invention, you may grind and roughen the surface after hardening of an artificial stone mixture, and may make a particulate component expose to a surface part.

As a roughening method for this, first, the selective removal method of a resin component is employ | adopted. That is, for example, it is effective to perform surface treatment by blowing high pressure water onto the surface of the molded product after demolding from the molding die.

This process is not limited because it varies depending on various conditions such as thickness, distance from the line, and processing type. However, in the case of 2 to 20 cm thickness, it is usually 50 to 1400 kg / cm 2 at the nozzle height. I can do it with precision water pressure. This pressure is a lower hydraulic pressure condition than natural stones.

That is, it is because the process to high quality can be carried out easily by presence of resin powder.

There is no particular limitation on the nozzle and the system for ejecting high pressure water. Various things are adopted.

This ground surface processing realizes flattening or roughening with a water jet, thereby producing artificial stone having a deep texture.

The presence of the resin component makes the surface neither cloudy nor easy to treat the waste liquid as compared to the etching method using chemicals.

Of course, if necessary, the surface portion may be treated with an organic solvent, and the resin component may be softened or melted to partially remove it.

In this case, the organic solvent may be selected according to the resin component to be used. For example, halogenated hydrocarbons such as methylene chloride and chloroform, carboxylic acids such as acetic anhydride, ethyl acetate and butyl acetate and ester compounds thereof, or acetone and tetrahydrofuran , DMF, DMSO and the like are exemplified.

The molded article can form surface irregularities by depositing in the organic solvent or by spraying or flowing these organic solvents to remove the softened or melted resin component from the surface portion.

In addition, unevenness may be formed by scraping away the resin component having low hardness from the surface portion by a wire brush, cutting means or the like.

After roughening by various means described above, and performing ground surface processing, the surface of the fine grain component is partially broken by polishing the surface as described above, and the grain of the coating layer and the fine grain component cross section to the surface of the product. Expose This realizes a surface texture with unique depth and beauty.

The means for surface polishing is not particularly limited and may be carried out using tools such as grindstones, abrasive cloths, polishing belts, or abrasives such as buff polishing agents and lapping compounds.

As the abrasive, diamond, boron carbide, korandam, alumina, zirconia and tripoly, mainly dolomite, alumina, chromium oxide, and cerium oxide, which are mainly used for polishing, are appropriately used.

Of course, after performing such grinding | polishing, you may roughen a surface part and form unevenness | corrugation.

In this manner, an artificial stone material having excellent surface matching texture and having luminescent properties is also produced.

Examples will be described below. Of course, this invention is not limited by the following example.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and in order to solve the above problems, the sum of inorganic fine grain components of 5 to 70 mesh size and inorganic fine grain components of less than 100 mesh is 89% by weight or more of the entire product. . In addition to the inorganic mixed component consisting of an inorganic fine grain component and an inorganic fine grain component, an artificial stone mixture containing not more than 11% by weight of the total amount of the resin component is integrally molded by being molded into a pre-cured hardened slab. Provide artificial stone.

The present invention also provides an artificial stone material, characterized in that the curable mixture is molded integrally with the cured slab previously molded from the artificial stone mixture.

Example 1

Compression molding was carried out in the mold of 60 wt% blast furnace slab, 30 wt% of natural crushed stone having an average particle diameter of 10 mesh, and 10 wt% of methyl methacrylate (including a hardener). Thereby, the hardened body slab of thickness 12mm was obtained.

This was put into the mold as shown in FIG.

A natural silica with a particle size of 10 to 25 mesh with a surface glaze layer of about 30 μm at a temperature of about 1000 ° C. using white glaze is used as 50% by weight of all fine grain components, and this fine grain component and 230 mesh aluminum hydroxide are used. The mixture was uniformly mixed with 9% by weight of methyl methacrylate monomer and 1% by weight of curing agent so as to have 90% by weight of the total weight of the composition at a weight ratio of 2: 1 to obtain a mortar artificial stone mixture.

The mixture was placed on a cured slab in a mold, compacted at a temperature of 110 ° C. for 15 minutes at a surface pressure of 30 kgf / cm 2, and integrally molded to form a plate-shaped body having a thickness of about 15 mm.

Subsequently, the surface portion cured in the artificial stone mixture was polished using a corandom dye. Thereby, the fine-grained component which has a baking cover layer exposed the partial cross section of the baking-like layer and a fine grain component.

The artificial stone obtained was deep, had a milky white color and beauty, had no bubbles in the interior and the surface, and had a uniform composition.

Bonding of the hardened body slab and the hardened part of the artificial stone mixture was sufficient in strength.

In the test according to Japanese Industrial Standard JIS K-7112, specific gravity was 2.02. Moreover, the water absorption was 0.10%. Other characteristics are shown in Table 1 below.

Table 1

Item result Exam conditions Flexural strength 30.28㎏f / cm According to JIS A5209 Compressive strength 1180㎏f / ㎠ Cross head speed 0.5mm / min load cell 2ton Impact strength 3.78 kgfcm / cm 2 Pendulum Impact Test Hardness 976㎏f / ㎡ Vickers hardness according to JIS Z-2244 Coefficient of linear expansion 0.68 (× 10 ^-5 K) TMA (30-100 ℃) Wear resistance 0.02 g JIS A-5209 Falling Abrasion Test

The obtained product was used as a wall of the building, and a beautiful deep marble wall was obtained. The manufacturing cost of the artificial stone product could be reduced to about 1/30 based on the case of obtaining a 15 mm thick plate without using the hardened slab.

Example 2

In Example 1, the plate-shaped molded product was obtained in the same manner using the following as the artificial stone mixture.

In other words, using a strontium aluminate-based photoluminescent material, natural silica having a particle size of 10 to 25 mesh having a surface baking layer at a thickness of about 30 μm at 1000 ° C. is used as 50% by weight of all fine components. Calcium carbonate having an average particle diameter of 230 mesh was uniformly mixed with 11% by weight of methyl methacrylate (MMA) and 1.5% by weight of the MMA weight so as to be 89% by weight of the total composition at a weight ratio of 2: 1. Artificial stone mixture.

This mixture was thrown in and shape | molded by the plate-shaped body of thickness about 15 mm.

Next, the surface portion was polished using a diamond grindstone and a silicon carbide magnesia grindstone. Thereby, the fine-grained component which has a baking cover layer exposed the partial cross section of the baking-like layer and a fine grain component.

The artificial stone thus obtained exhibits luminous / luminescent properties, which are luminous in the entire thickness direction, are usually deep, have a milky white color and beauty of marble-like, and there are no bubbles inside and on the surface, and the composition is uniform.

In the test according to Japanese Industrial Standard JIS K-7112, specific gravity was 2.02. Moreover, the water absorption was 0.10%. Other characteristics were as shown in Table 2 below.

TABLE 2

Item result Exam conditions Flexural strength 30.15 kgf / cm According to JIS A5209 Compressive strength 1058㎏f / ㎠ Cross head speed 0.5mm / min load cell 2ton Impact strength 3.81kgfcm / cm2 Pendulum Impact Test Hardness 985㎏f / ㎡ Vickers hardness according to JIS Z-2244 Coefficient of linear expansion 0.69 (× 10 ^-5 K) TMA (30-100 ℃) Wear resistance 0.03 g JIS A-5209 Falling Abrasion Test

In addition, no abnormality was found by the acid and alkali resistance tests by 8 hours of 3% aqueous hydrochloric acid solution and 8 hours of 3% sodium hydroxide aqueous solution.

The obtained product was used as a wall of the building, and a beautiful deep marble wall was obtained.

Example 3

Using a strontium aluminate-based photoluminescent material, a transparent glass having a particle size of 5 to 50 mesh having a surface baking layer of about 40 μm at 700 ° C. is used as 40% by weight of all fine grain components. 250 mesh natural silica powder is mixed uniformly with 13% by weight of methyl methacrylate (containing 2.0% by weight of peroxide-based curing agent) at a weight ratio of 2: 1 to 87% of the total weight of the composition. Then, as required in Fig. 2, the necessary amount was injected into the mold so that the thickness after curing was 3 mm.

Subsequently, a hardened body slab having a thickness of 10 mm previously cured was deposited on the artificial stone mixture. This hardened slab is formed by compression molding consisting of 30% by weight of blast furnace slab, 20% by weight of glass powder, 30% by weight of natural crushed stone and 20% by weight of methyl methacrylate (including a hardener).

After the hardened body slab was placed, pressure heating molding was performed to obtain a plate-shaped body having a thickness of 13 mm.

Subsequently, the surface portion was polished using a diamond-based grindstone and a silicon carbide-magnesia grindstone, and only the resin portion of the surface portion was removed at a water jet pressure (nozzle diameter of 0.75 mm, injection distance of 40 mm) of 1100 kg / cm 2.

The artificial stone thus obtained had a depth in general and had a non-slip function, and was able to be visually viewed for a long time in the depth direction by the photoluminescent property at night.

It can be used as an artificial stone that can be used as a luminous induction building material for emergency blackouts.

Bonding strength between the hardened part and the hardened slab in the artificial stone mixture was large and practically no problem occurred.

Example 4

The following combination (% by weight)

Transparency natural silica: 50

(10 to 70 mesh)

Aluminum Hydroxide: 10

(Average particle size 220 mesh)

Transparent silica powder: 10

(Average particle size 200 mesh)

Strontium aluminate photoluminescent material: 20

(Average particle size 200 mesh)

Methyl methacrylate (MMA): 10

(Contains 0.15% Peroxide MMA Curing Agent)

Was mixed uniformly to form a mortar. The obtained mixture was poured into a mold and molded into a plate-shaped body having a thickness of 3 mm.

This plate-shaped object was mounted in the mold, and the curable mixture which consists of the following composition was injected on it.

30% by weight of blast furnace

10% by weight of glass powder

40% by weight natural stone

20% by weight of methyl methacrylate

(Including hardener)

After injection, it was compressed for 20 minutes at a temperature of 110 ° C. at 40 kgf / cm 2 by surface pressure.

By this compression, plate-like artificial stone having a thickness of about 14 mm was obtained.

Subsequently, the surface of the artificial stone material was polished using diamond grindstone, silicon carbide and magnesia grindstone, to a thickness of 10 mm.

The artificial stone thus obtained exhibits luminous / luminescent properties, which are luminous in the whole depth direction, are usually deep, have a milky white color and beauty of marble-like, and there are no bubbles inside and on the surface, and the composition is uniform.

In the test according to Japanese Industrial Standard JIS K-7112, the specific gravity was 1.98. Moreover, the water absorption was 0.10%. Other characteristics were as shown in Table 3 below.

TABLE 3

Item result Exam conditions Flexural strength 29.97 kgf / cm According to JIS A5209 Compressive strength 1185kgf / ㎠ Cross head speed 0.5mm / min load cell 2ton Impact strength 4.08kgfcm / cm2 Pendulum Impact Test Hardness 997㎏f / ㎡ Vickers hardness according to JIS Z-2244 Coefficient of linear expansion 0.69 (× 10 ^-5 K) TMA (30-100 ℃) Wear resistance 0.02 g JIS A-5209 Falling Abrasion Test

In addition, no abnormality was found by the acid and alkali resistance tests by 8 hours of 3% aqueous hydrochloric acid solution and 8 hours of 3% sodium hydroxide aqueous solution.

The obtained product was used as a wall of the building, and a beautiful and deep fish stone wall was obtained. In addition, when the daylight is clear, the light luminous by daylight is maintained for a long time at high brightness at night. The texture was obtained by the light emitting part having a thickness.

Example 5

In the formulation of Example 4, the silica powder was changed to 20%, the strontium aluminate-based photoluminescent material was changed to 10%, and the ratio of natural silica was changed to 62% and methyl methacrylate (MMA) to 8%. And uniformly mixed, a plate-shaped body having a thickness of 14 mm was used.

Subsequently, the surface portion was polished using diamond grindstone, silicon carbide, and magnesia grindstone, and only the resin component of the surface portion was removed at a water jet pressure (nozzle diameter of 0.75 mm, injection distance of 40 mm) of 1100 kg / cm 2.

The artificial stone thus obtained had a function that normally had a depth and did not slip, and was visible at a long time in the whole depth direction by photoluminescence at night.

It can be used as an artificial stone that can be used as a luminous induction building material for emergency blackouts.

As described above, the present invention provides a high-density artificial stone having an excellent color tone and good characteristics with a depth and beauty not conventionally obtained at an extremely low cost. The obtained product becomes a uniform product which is difficult to obtain in natural products. In addition, the production of such superior products is possible without the need for specially expensive equipment.

In particular, the artificial stone of the present invention is suitable for obtaining fish-stone or marble-like, and can be used in the same manner as natural stone. And the function of luminescence will also be realized. The product is a deep luxury product that can be used as a wall, floor, pillars, etc. than natural products.

Claims (20)

A total of 11 wt% or less of the total amount of the inorganic fine grains of 5 to 70 mesh and less than 100 mesh of inorganic fine grains and an inorganic mixed component consisting of an inorganic fine grain component and an inorganic fine grain component of 89 wt% or more of the whole product. An artificial stone material characterized in that the artificial stone mixture containing a resin monomer component is integrally molded by being molded into a hardened slab (Slab) that is cured in advance. It is an artificial stone mixture containing not less than 11% by weight of resin monomer component together with the total amount of inorganic fine grains of 5 ~ 70 mesh size and inorganic fine particles of less than 100 mesh in total. An artificial stone material characterized in that the curable mixture is molded and integrally formed with respect to the cured slab to be molded. The artificial stone material according to claim 1 or 2, wherein the resin monomer component is methacrylic acid ester. The artificial stone material according to claim 1, wherein the hardened slab is a resin-containing material. The method according to claim 4, wherein the hardened slab is 11% by weight or less of the total amount together with the inorganic mixed component having a sum of 5 to 70 mesh inorganic fine grain components and less than 100 mesh of the inorganic fine particles. An artificial stone material comprising a resin component. 6. The artificial stone according to claim 5, wherein the resin component is methacrylic acid ester resin. The artificial stone according to claim 1 or 4, wherein the hardened slab contains industrial wastes such as blast furnace slabs and glass. The artificial stone material according to any one of claims 1, 2, and 5, wherein the inorganic fine grain component has an inorganic material layer or an organic material layer which is previously coated and cured on the surface thereof in part or all thereof. 9. The artificial stone composition according to claim 8, wherein the surface hardening layer has a thickness of 5 to 50 µm. 9. The artificial stone composition according to claim 8, wherein at least 10% of the total amount of the fine grain component has a surface-coated layer. 9. The artificial stone composition according to claim 8, wherein the fine-grained component has a surface coating cured layer baked by water glass or pigmented water glass or ceramic glaze. The artificial stone composition according to claim 8, which has a surface coating cured layer made of a pigment-added resin. The artificial stone composition according to claim 1 or 5, wherein the fine grain component and the fine grain component are blended in a weight ratio of 0.5: 1 to 5: 1. 9. The artificial stone according to claim 8, wherein at least a part of the fine grain component is a transparent inorganic material having a luminous or fluorescent material baked on the surface or coated at room temperature. 15. The artificial stone material according to claim 14, wherein the transparent inorganic material is glass or silica. The artificial stone according to any one of claims 1, 5 and 8, wherein at least a part of the fine grain or particulate component is a luminous or fluorescent substance. 15. The artificial stone material according to claim 14, wherein the inorganic fine component is 5 to 40% by weight of the luminous or fluorescent substance. The artificial stone according to any one of claims 1, 4 and 7, wherein the hardened slab is made of cement or resin material. The artificial stone material according to claim 2 or 3, wherein the curable mixture contains a resin. 20. The artificial stone according to any one of claims 2, 3 and 19, wherein the curable mixture contains industrial wastes such as blast furnace and glass.