KR101789746B1 - Manufacturing method of a color aggregate and color aggregate by the method - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing colored aggregate and a colored aggregate using the method, and more particularly to a method of producing colored aggregate by mixing aggregate with a primary coating liquid containing a water-soluble resin, Mixing pigments in a mixed aggregate material; heating the aggregate material mixed with the pigment to color the pigment; and mixing the pigmented aggregate material with a water-soluble resin, a flake wood powder, a UV stabilizer, a curing accelerator Coating with a coating liquid, and heating the secondary coated aggregate. The colored aggregate according to the present invention is advantageous in that the coloring rate of the pigment is high and the appearance is good, and the coloring layer is not easily removed, so that the color can be maintained semi-permanently. In addition, it has an advantage that the physical properties and eco-friendliness of color aggregates are also excellent.

Description

TECHNICAL FIELD The present invention relates to a method of manufacturing a color aggregate and a color aggregate using the method,

The present invention relates to a method of producing colored aggregate and a colored aggregate using the same, and more particularly, to a method of producing colored aggregate excellent in the coloring rate of aggregate, hardly discolored or discolored, The present invention relates to a colored aggregate.

Concrete is a composite material made by mixing cement with sand, gravel and water. It is more resistant to water than wood or steel, and it is the most widely used construction material on the earth because it is easy to work with various shapes and sizes.

On the other hand, in recent years, the increase of the national income has raised the awareness of the surrounding environment, and it has been possible to improve the urban aesthetic by giving various colors and designs to the standardization of gray one side change of various civil and architectural structures, Investment is being done.

Especially, the roofing material and inner and outer materials of the building are also the same. The concrete slab structure is insufficient in waterproofing technology, causing excessive leakage of water and causing allergic diseases caused by fungus bacteria. , Interior and exterior materials are not able to solve the stain phenomenon inside / outside of the building due to the whitening phenomenon caused by the submergence reaction which is the biggest problem of the cement concrete products. As a result, paints are being painted on the inside and outside walls of buildings every two to three years, which has been a factor in increasing the management cost of buildings. Further, the conventional cement-concrete products is calcium the main component of the penetration hydration of cement (cement by the water such as rain water, even after curing (Ca) is calcium hydroxide (Ca (OH ₂₎₎ causes a chemical reaction water (H ₂ O) There is also an environmental problem in which strong alkali carbon is generated through a phenomenon that causes damage to crops, aquatic plants and animals.

Therefore, development of an environmentally friendly color aggregate capable of solving such problems is required.

BACKGROUND ART Conventionally, color aggregates are used by coating aggregates of natural stone, artificial stone, or small stone with a predetermined particle size with ceramics having excellent durability, chemical resistance, weather resistance, and heat resistance. Such color aggregates are required to be environmentally friendly, excellent in water resistance, alkali resistance, heat resistance, abrasion resistance, gloss and the like.

For this purpose, Korean Patent No. 10-1669163 discloses a method of coloring the surface of an aggregate made of natural stone as a pigment, then coating or impregnating the surface with an epoxy resin, and applying a photocatalyst, 0978384 proposes a method of producing a concrete product by coloring an aggregate with a mixture of a water-soluble resin and a coloring pigment.

However, this method has a drawback in that the efficiency of coloring the aggregate is poor.

KR 10-1669163 B1 KR 10-0978384 B1

Accordingly, an object of the present invention is to solve the problems of the conventional method of producing colored aggregate, and it is an object of the present invention to provide a method for producing a colored aggregate, which comprises mixing pigment and aggregate with a coating liquid containing a water- To improve the coloring efficiency.

Further, after pigmentation of the pigment, secondary coating with a water-soluble resin and a plain wood powder is used to effectively protect the colored layer, to improve the physical properties of the aggregate, and to have environment friendliness.

In order to accomplish the above object, the present invention provides a method of manufacturing a colored aggregate, comprising the steps of: mixing an aggregate with a primary coating liquid containing a water-soluble resin, a calcined shell powder and water; Mixing the colored aggregate with a secondary coating liquid containing a water-soluble resin and a plain wood powder, and mixing the pigment with the secondary coating, And then heating the aggregate.

The primary coating solution further comprises a swellable layered silicate, characterized in that the pigment comprises a cationic pigment.

Coating the secondarily coated aggregate with a tertiary coating liquid containing water, methanol, photocatalyst powder, plain wood powder, and acrylate resin, and heating the secondary coating And curing the aggregate by irradiating ultraviolet rays to the aggregate.

Wherein the primary coating solution comprises 40 to 60% by weight of a water-soluble resin, 5 to 10% by weight of a calcined shell powder, 0.1 to 5% by weight of a swellable layered silicate and a residual amount of water, the tertiary coating solution contains 0.1 to 5% 5 to 20% by weight of a photocatalyst powder, 5 to 20% by weight of an opaque wood powder, 30 to 40% by weight of an acrylate resin, and residual water.

The colored aggregate according to the present invention is characterized by being manufactured by the above-described method.

The colored aggregate according to the present invention is advantageous in that the coloring rate of the pigment is high and the appearance is good, and the coloring layer is not easily removed, so that the color can be maintained semi-permanently. In addition, it has an advantage that the physical properties and eco-friendliness of color aggregates are also excellent.

1 is a view showing a process for producing colored aggregate according to the present invention.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The method for producing colored aggregate according to the present invention comprises the steps of mixing an aggregate with a primary coating liquid containing a water-soluble resin, a calcined shell powder and water as shown in Fig. 1, mixing the pigment with an aggregate mixed with the primary coating liquid A step of heating the aggregate mixed with the pigment to color the pigment; coating the aggregate colored with the pigment with a secondary coating solution comprising a water-soluble resin and a plain wood powder; And heating the aggregate.

That is, unlike the prior art, the present invention primarily improves the coloring efficiency of a pigment by first mixing the pigment with a coating liquid containing a calcined shell powder, coating the pigment with a coating solution containing a water-soluble resin and a white wood powder, Of course, the colored layer is effectively protected, and the physical properties and eco-friendliness of the aggregate are improved.

Hereinafter, this step will be described with reference to FIG.

Aggregate is water-soluble resin, plasticity Shell  Powder, and water.

First, prepare aggregate.

In the present invention, the aggregate is not limited to basalt, granite, dolomite, silica sand, zircon, germanium and the like, and the grain size may be in the range of 0.5 to 70 mm.

Then, unnecessary fine powders and various foreign substances are removed from the prepared aggregate. For this purpose, a foreign substance remover, a vibrator, a blower, an electromagnet, etc. can be used. Since the foreign matter removal method is well known in the art, a detailed description thereof will be omitted.

Next, the prepared aggregate is put into a mixer, and the primary coating solution is added to the mixer to mix. The amount of the primary coating solution may be about 1 to 20 parts by weight based on 100 parts by weight of the aggregate. However, the amount of the primary coating solution is not necessarily limited to 100 parts by weight of the aggregate. .

In the present invention, the primary coating liquid includes a water-soluble resin, a calcined shell powder, and water. The water-soluble resin is a component that improves the strength of the aggregate and enables pigmentation of the aggregate. -styrene) -based resin, and a water-soluble epoxy resin. The water-soluble resin may further contain a degassing agent and a viscosity enhancer, and may be contained in an amount of 0.05 to 5% by weight based on the total weight of the water-soluble resin. The water-soluble resin is preferably contained in an amount of 40 to 60% by weight based on 100% by weight of the primary coating liquid.

In order to remove salt and foreign matter from the shell, the shell is cleaned with water, dried, and dried at 600 to 800 ° C for 1 to 4 hours Followed by pulverization with a particle size of 2 to 200 mu m. The calcined shell powder is preferably contained in an amount of 5 to 10% by weight based on 100% by weight of the primary coating liquid.

Further, water improves the viscosity of the primary coating liquid to enable uniform coating on the surface of the aggregate, and is included as a balance except for the water-soluble resin and the calcined shell powder with respect to 100 wt% of the primary coating liquid.

That is, the primary coating solution contains 40 to 60% by weight of the water-soluble resin, 5 to 10% by weight of the calcined shell powder, and a residual amount of water.

Mixing the pigment with the aggregate mixed with the primary coating solution.

Next, the pigment is mixed with the aggregate mixed with the primary coating solution. That is, the pigment is further added to the mixer into which the aggregate and the primary coating solution are introduced and mixed. The amount of the pigment to be added is not limited, but may be about 0.1 to 10 parts by weight based on 100 parts by weight of the aggregate before mixing with the aggregate, that is, the first coating solution.

Here, the kind of the pigment is not limited, but it is possible to use all kinds of pigments applicable to the fields other than the powdered inorganic pigment and the cationic pigment used in the production of the colored aggregate, Do.

And heating the aggregate containing the pigment to color the pigment.

Then, the aggregate containing the pigment is heated to color the pigment in the aggregate. In this case, the heating temperature is about 100 to 800 ° C, more preferably 100 to 300 ° C, and the heating time is about 5 to 30 minutes.

Coating the pigmented aggregate with a secondary coating solution comprising a water-soluble resin and a white wood powder.

Next, the colored aggregate of the pigment is coated with a secondary coating liquid containing water-soluble resin and plain wood powder. In addition, the secondary coating solution may further include a UV stabilizer and a curing accelerator.

The amount of the secondary coating solution may be about the same as that of the primary coating solution, that is, about 1 to 20 parts by weight of the secondary coating solution per 100 parts by weight of the aggregate before mixing with the primary coating solution used.

The present invention protects the pigment layer colored with the secondary coating liquid, imparts gloss to the aggregate, imparts an antimicrobial function through the phytoncide, inhibits the emission of various harmful substances generated from the concrete, And the like.

The whitening wood powder is composed mainly of cellulose, hemicellulose and lignin, and has a particle size of 1 to 10 mu m. The whitening wood powder has a phytoncide content of about 5.5 ml / 100 g, and thus has an excellent antibacterial effect. In the present invention, the unbleached white powder is preferably contained in an amount of 5 to 10% by weight based on 100% by weight of the secondary coating solution.

The UV stabilizer and the curing accelerator may be of any kind conventionally used. Preferably, the UV stabilizer and the curing accelerator are contained in an amount of 0.1 to 5 wt% of a UV stabilizer and 0.1 to 5 wt% of a curing accelerator based on 100 wt% of the secondary coating solution.

As the water-soluble resin, a water-soluble epoxy resin may be used, and it is preferable that the water-soluble resin is contained in a residual amount relative to 100 wt% of the secondary coating solution. In addition, as described above, the water-soluble resin may contain 0.05 to 5% by weight of the degassing agent and the viscosity-increasing agent, respectively, based on the total weight of the water-soluble resin.

And heating the secondary coated aggregate.

Next, the secondary coated aggregate is heated to a temperature of 200 to 800 ° C, cooled and dried. At this time, the heating time is not limited, but it is enough for about 5 to 30 minutes.

The colored aggregate prepared as described above has a high coloring rate of the pigment and is not only beautiful in appearance but also has a merit that the coloring layer of the pigment can not be easily removed and the color can be maintained semi-permanently. The secondary coating also has the advantage of improving the physical properties and eco-friendliness of the aggregate.

On the other hand, the primary coating solution may further include a swellable layered silicate.

Herein, the planar silicate silicate refers to a silicate having a two-dimensional layer structure, in which water molecules are intercalated between layers to expand the silicate layer and ultimately induce exfoliation of the lattice layer in the solution to form a colloidal phase ≪ / RTI >

In the present invention, the swellable layered silicate is a layered silicate having excellent interlayer reactivity such as ion exchangeability, and any of synthetic and natural clay can be used. Typically, montmorillonite, hectorite, smectite-based clay, vermicullite, synthetic mica, kanemite, magadiite, and the like, including beidellite, nontronite, saponite, , And kenyaite may be used.

In addition, the swelling layered silicate may have a cation exchange capacity (CEC) of 50 to 150 mequiv / 100 g. When the CEC is less than 50, effective swelling does not occur in the aqueous solution, so that the amount of pigment that can be interlayer-supported is limited. When the CEC is more than 150, effective swelling is also difficult. At this time, the particle size is not limited, but it is sufficient if it has an average size of about 0.001 to 10 mu m.

The swelling layer silicate may be contained in an amount of 0.1 to 5% by weight based on 100% by weight of the primary coating solution. However, when the swelling layered silicate is used, it is preferable that the swelling layered silicate is thoroughly mixed with water to obtain a colloidal state, and then the water-soluble resin and the calcined shell powder are mixed to prepare a primary coating solution.

In addition, when the swellable layered silicate is included, the pigment preferably includes a cationic pigment. In order to insert pigment or pigment molecules into the layer of the swellable layered silicate, intercalation is mainly performed by cation exchange, The kind of the cationic pigment is not limited.

In the meantime, the present invention is characterized in that after the step of heating the secondary coated aggregate, the step of coating the heated secondary coated aggregate with a tertiary coating liquid containing water, methanol, photocatalyst powder, white wood powder and acrylate resin And irradiating the third coated aggregate with ultraviolet light to cure the aggregate.

That is, by forming the final coating layer with the photocatalyst powder and the untreated wood powder, the environmental friendliness can be remarkably increased.

More specifically, the photocatalyst powder may have a particle size of 0.1 to 1.0 탆, a specific surface area of 140 cm ² / g or more, a density of 3.0 to 4.5 g / cm ³ , a pH of 6 to 8.5, It is preferable to use a powder having an anatase crystal phase.

In addition, it is preferable to use the artificial wood powder having a particle size of 0.1 to 1 탆, but the present invention is not limited thereto.

The acrylic acid ester resin is used for strong bonding with the secondary coating layer and may be at least one selected from the group consisting of methacrylic, acrylic, vinyl acetate and ethylene-vinyl acetate copolymers. In addition, polysiloxane-based inorganic binder materials It is also possible to use.

The water is used as a dispersion medium, and methanol is used as a dispersant.

In the present invention, it is preferable that the tertiary coating liquid contains 0.1 to 5% by weight of methanol, 5 to 20% by weight of a photocatalyst powder, 5 to 20% by weight of a whiteness wood powder, 30 to 40% by weight of an acrylate resin, If the content of the methanol is out of the above range, it is difficult to disperse easily. When the titanium dioxide powder and the untreated wood powder are out of the above range, it is difficult to improve the environmental friendliness. When the acrylic acid ester resin is out of the above- This is because the binding force is not good.

The amount of the tertiary coating solution may be about 1 to 10 parts by weight based on 100 parts by weight of the aggregate before the primary coating solution is mixed. The ultraviolet ray is irradiated for 1 to 60 seconds at a lamp output of 2.5 to 4.0 kw , But it does not restrict the curing of the tertiary coating solution.

The colored aggregate according to the present invention can be applied to various mortar compositions, and can be used not only as a cement but also as a water-soluble resin, thereby being advantageous in terms of environmental friendliness.

On the other hand, the concrete aggregate may be used to produce the concrete product, but the practice thereof is not limited. At this time, the colored aggregate, cement, and water may be mixed to produce a concrete product having a color feeling as a whole, but it may be manufactured to have a color feeling only at a part, that is, the exposed surface. Hereinafter, one embodiment will be described.

First, a general mortar composition in which general aggregate, cement and water are mixed, and a color aggregate composition in which a colored aggregate and a common aggregate are mixed together, a cement and water are mixed are respectively prepared.

Here, the mixing ratio of the aggregate (including mixed aggregate), cement and water depends on conventionally known mortar compositions. In addition, the mixing ratio of the color aggregate and the general aggregate is not limited. Illustratively, the mixing ratio of the color aggregate and the general aggregate is in the range of 1: 0.1 to 1 by weight so that the color feeling of the aggregate can be clearly displayed in the product.

Next, as shown in Fig. 2, the general mortar composition (1) is put into a mold 100 and compression molded. Here, the shape of the forming mold 100 is not limited, and the molding pressure, etc.,

Then, the color mortar composition (2) is put into the mold (100) again in a state in which the compression molded general mortar composition (1) is not taken out of the mold (100). That is, the color mortar composition (2) is added to the upper part of the general mortar composition (1). And then compression-molded.

Next, as shown in FIG. 2, the concrete product A formed by laminating the color mortar composition 2 containing the color aggregate on the general mortar composition 1 is taken out from the mold 100, .

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory, and are not to be construed as limiting the present invention. * * * * * * Recently Added Patents

Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (5)

delete Mixing the aggregate with a primary coating solution comprising a water-soluble resin, calcined shell powder and water,
Mixing the pigment with the aggregate mixed with the primary coating solution,
Heating the aggregate mixed with the pigment to color the pigment,
Coating a colored aggregate of the pigment with a secondary coating solution comprising a water-soluble resin and a plain wood powder;
And heating the secondary coated aggregate,
The primary coating solution further comprises a swellable layered silicate,
Wherein the pigment comprises a cationic pigment.
3. The method of claim 2,
After the step of heating the secondary coated aggregate,
Coating the heated secondarily coated aggregate with a tertiary coating liquid containing water, methanol, photocatalyst powder, whitening wood powder and acrylate resin,
Further comprising the step of irradiating ultraviolet light to the third coated aggregate to cure the aggregate.
The method of claim 3,
The primary coating solution may contain,
40 to 60% by weight of a water-soluble resin, 5 to 10% by weight of a calcined shell powder, 0.1 to 5% by weight of a swellable layered silicate,
The tertiary coating solution may contain,
0.1 to 5% by weight of methanol, 5 to 20% by weight of a photocatalyst powder, 5 to 20% by weight of an opaque white powder, 30 to 40% by weight of an acrylate resin, and water in a remaining amount.
A colored aggregate produced by the method of any one of claims 2 to 4.

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