KR101640727B1

KR101640727B1 - Manufacturing method of elvan board having improved chemical resistance and waterproof property

Info

Publication number: KR101640727B1
Application number: KR1020160015237A
Authority: KR
Inventors: 김숙자
Original assignee: 세진산업 (주)
Priority date: 2016-02-04
Filing date: 2016-02-04
Publication date: 2016-07-18
Also published as: WO2017135561A1

Abstract

The present invention relates to a method of producing a granite plate having excellent chemical resistance and waterproofing property, and a method of manufacturing the granite plate according to the present invention is characterized in that methyl-triethoxysilane or 3-glycidyloxypropyltrimethoxysilane , a first glaze comprising gamma -aminopropyltriethoxysilane, isopropanol, zeolite, silica sol, frit, a second glaze comprising silica sol, titania or alumina sol, and a coloring metal ion pigment, and water soluble potassium methyl And a third glaze containing silicon, followed by drying and firing. This has the advantage of being able to produce an elvan plate for building interior and exterior materials excellent in chemical resistance and waterproofness.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an elvan sheet material having excellent chemical resistance and waterproof property,

The present invention relates to a method for producing an elbow sheet having excellent chemical resistance and waterproofness.

Quartzite rock is a rock that belongs to porphyry. It is composed of quartz and feldspar. It has a strong adsorption, contains about 25,000 inorganic salts and exchanges heavy metals and ions. It is known as a rock that can be used as a harmful metal removing agent. have.

The technology that implements architectural interior and exterior materials using such a quartz stone has been conventionally introduced. In particular, Patent Document 1 discloses a building interior and exterior material using a quartz stone and a method for manufacturing the same, which comprises the steps of crushing elvan quarry and classifying it into biotite, muscovite and brown mica, and a step of classifying biotite, , The particles are classified into 0.6 mm or more for muscovite, 0.6 mm or less for biotite, and 3 to 6 mm for brown mica, and the step of classifying the grains of 0.6 mm or more and 0.6 mm or less Of mica and 3 to 6 mm of brown mica; and adding 1 to 10% by weight of an adhesive to 85 to 94% by weight of the mica selected in said step and 5 to 15% by weight of a neutralizer, Screening the mixture of steps a) and b) screening the mixture of steps b) and c) Pressing the mixture at a pressure of 1200 Kgf / cm 2 and a temperature of 140 to 200 ° C to form a gelled mixture; shaping the gelled mixture into a desired shape and then demolding; cooling the mixture after the demolding has been completed; Polishing the plate-corrected mixture one to six times, and drying after the polishing is completed.

In addition, Patent Document 2 discloses a method for producing a building finish material using elvan stone, loess, and salt. It mixes elvan stone, loess and salt to inhibit propagation of microorganisms by far-infrared radiation and salt component by elvan stone and loess It can be composed of bricks for interior walls and plaster materials with excellent humidity control and antimicrobial action by its ability to close the inner walls of grain warehouses or to use them as flooring materials to produce foods such as grains with a freshness of 25 to 50% And the like.

However, in the case of using the elvan plate produced by this method as the exterior material of the building, there was a problem of aesthetic appearance such as surface corrosion caused by external exposure for a long period of time, breeding of fungi inside the elvan plate, There are many problems in that the color of the image is clear.

Accordingly, there is a desperate need to develop an erbium plated sheet for building interior and exterior materials which can not penetrate into the interior due to improved chemical resistance and especially excellent waterproofness, so that the surface characteristics of the elvan sheet can be maintained unchanged even when exposed to the outside for a long period of time .

Patent Registration No. 10-0450716 Published Patent Application No. 10-2004-0046304

Accordingly, in order to solve the above problems, the present invention provides a method of producing a molded article, comprising the steps of: (1) preparing a preliminarily dried bovine sheet material by adding methyl-triethoxysilane or 3-glycidyloxypropyltrimethoxysilane, A first glaze comprising silica sol, frit, a second glaze comprising silica sol, titania, or alumina sol, and a coloring metal ion pigment, and water soluble potassium methyl silicone The present invention has been completed based on this finding. The present invention has been accomplished on the basis of this finding.

Accordingly, one aspect of the present invention is to provide a method of manufacturing an elvan-like sheet material for building interior and exterior materials excellent in chemical resistance and waterproofness.

According to an aspect of the present invention, there is provided a method of manufacturing an elbow plate, comprising: a first drying step of drying an elbow plate at 50 to 80 ° C for 1 to 3 hours; 15 to 20 parts by weight of methyl-triethoxysilane (MTEOS) or 3-glycidyloxylpropyl trimethoxysilane (GPTMS) is added to the surface of the primary dried elvan plate, 12 to 15 parts by weight of -aminopropyl triethoxysilane, 7 to 10 parts by weight of isopropanol, 23 to 28 parts by weight of zeolite, 15 to 20 parts by weight of silica sol, And 8 to 12 parts by weight of a frit; (4) to 7 parts by weight of silica sol, titania or alumina sol and 5 to 10 parts by weight of a coloring metal ion pigment on the surface of the elvan-coated sheet material to which the first glaze is applied 2 a second application step of applying a glaze; And a third applying step of applying a third glaze containing 3 to 5 parts by weight of water-soluble potassium methylsilicone to the surface of the elvan-coated sheet material to which the second glaze is applied.

According to another embodiment of the present invention, there is provided a method of producing a granite plate, wherein the zeolite is selected from the group consisting of clinoptilolite, analcime, chabazite, mordenite, One or more selected from the group consisting of erionite, heulandite, phillipsite, and ferrienrite.

In another embodiment of the present invention, the colored metal ion pigment is selected from the group consisting of FeCl ₂ , ZrCl ₂ , MnCl ₂ , CrCl ₂ , And cobalt chloride (CoCl ₂ ).

The method may further include a second drying step of drying the elbow plate at 50 to 80 ° C for 1 to 3 hours after the third application step.

The method may further include a sintering step of heating the elbow plate to a temperature of 650 to 1,150 ° C after the second drying step.

The method for manufacturing an elvan plate material according to the present invention can improve the chemical resistance and waterproof property while maintaining the characteristic properties of the elvan plate by glazing the surface of the elvan plate at a relatively low temperature, It is very advantageous to be able to impart color.

FIG. 1 is a process diagram schematically showing steps of manufacturing an elbow plate according to the present invention.

Before describing the invention in more detail, it is to be understood that the words or words used in the specification and claims are not to be construed in a conventional or dictionary sense, It should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, the constitution of the embodiments described in the present specification is merely a preferred example of the present invention, and does not represent all the technical ideas of the present invention, so that various equivalents and variations And the like.

Hereinafter, preferred embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention.

The present invention relates to a method of manufacturing an elvan plate material which improves the chemical resistance and waterproofness of an elaborate plate material used variously as interior and exterior materials for construction and interior and can impart uniform color to the surface of the elvan plate, Permeable low-temperature glaze capable of being treated on the surface of the elvan sheet at a room temperature condition of 30 占 폚.

However, when it is used as a finishing material outside the building, due to acid rain, wind, dust, ultraviolet rays, and air pollution due to environmental destruction, the plate material And the surface of the substrate is easily corroded. In addition, when the elvan plate is used as a built-in finishing material for a public sauna facility, there is a problem that the mold grows easily on the surface of the elvan plate due to the characteristic of elvan, which is weak in moisture.

Accordingly, the inventor of the present invention has developed a new method of processing the elvan sheet material which can solve the above-mentioned problems of the conventional elvan sheet material. In this way, the inventor of the present invention has developed a method of manufacturing the elvan sheet material, Is an architectural exterior material and a building interior material in a high humidity environment, and has a merit that it can be used for a long time while maintaining high durability.

Generally, the elvan plate material contains a certain amount of water. In the method of manufacturing the elvan plate material used in the present invention, first, the natural elbow plate material is first dried.

The step of cutting the elbow plate to a predetermined size may be further roughened before the primary drying step. The cutting area of the plasterboard may be varied according to the intended use of the plate. The thickness of the sheet material is usually in the range of 0.5 to 5 cm, etc., and may be variously formed to meet the intended use of the sheet material. The scope of right of the present invention is not limited to the area and the thickness of the elbow plate.

The reason for passing through the primary drying step is to allow the glaze to penetrate efficiently into the inside of the veneer sheet material through the first and second coating steps using various glazes as described later.

The primary drying step may be carried out at a temperature of typically 50 to 80 DEG C for 1 to 3 hours. If the primary drying temperature is lowered too much, the drying time becomes longer and the moisture removal is not performed sufficiently. Therefore, there is a problem that the glaze applying step described below can not be efficiently performed. If the primary drying temperature is increased too much, There is a concern.

On the other hand, the granite plate having undergone the primary drying step is prepared to efficiently infiltrate and permeate various permeable low-temperature glazes to be described later, and the permeable low-temperature glaze is carried out in three stages to be described later depending on the type thereof.

Firstly, the first application step of applying the first glaze can be performed at room temperature. Therefore, it is advantageous that the application of the glaze is very easy.

The first glaze preferably comprises 15-20 parts by weight of methyl-triethoxysilane (MTEOS) or 3-glycidyloxylpropyl trimethoxysilane (GPTMS), [gamma] -aminopropyltriethoxysilane 12 to 15 parts by weight of? -Aminopropyl triethoxysilane, 7 to 10 parts by weight of isopropanol, 23 to 28 parts by weight of zeolite, 15 to 20 parts by weight of silica sol, ) &Lt; / RTI >

The first glaze functions to impart chemical resistance and waterproofness to the elvan sheet material.

On the other hand, the first glaze is prepared by uniformly mixing 15-20 parts by weight of methyl-triethoxysilane or 3-glycidyloxypropyltrimethoxysilane and 12-15 parts by weight of? -Aminopropyltriethoxysilane, Then, 7 to 10 parts by weight of isopropanol and 23 to 28 parts by weight of fine pulverized zeolite were further added to the mixed silane mixture, and the mixture was heated while being heated at a temperature of 50 to 70 캜. 15 to 20 parts by weight of silica sol and 15 to 20 parts by weight of frit &Lt; / RTI > by weight to 12 parts by weight of water, and further stirring is carried out.

The fine pulverized zeolite may be selected from the group consisting of clinoptilolite, analcime, chabazite, mordenite, erionite, heulandite, (phillipsite), and ferrienrite (ferrienite).

In this way, the first glaze penetrates deeply evenly into the interior of the elbow plate subjected to the first coating process at room temperature by using the first glaze.

The first coating step using the first glaze can be performed by applying 5 to 8 m 2 of elongated sheet material per 1 liter of the first glaze.

The first coating step using the first glaze may be performed by a spraying method using a spray gun, which is typically used for coating a glaze, but it is also possible to use various coating methods commonly used in related arts And the scope of the present invention is not limited to such a coating method.

Next, a second application step of applying the second glaze to the surface of the elbow plate is carried out.

The second application step using the second glaze is performed in order to impart various colors to the elvan plate and to impart additional water resistance and chemical resistance.

The second glaze may comprise from 4 to 7 parts by weight of silica sol, titania, or alumina sol and from 5 to 10 parts by weight of a colorant metal ion pigment.

The colored metal ion pigments are iron chloride (FeCl2), zirconium chloride (ZrCl _2), chloride, manganese (MnCl _2), chloride, chromium (CrCl _2), and can be selected at least one from the group consisting of cobalt chloride (CoCl ₂₎ Do.

The second application step of applying the second glaze can also be performed at room temperature. Therefore, it is very easy to apply the second glaze.

And the second coating step using the second glaze can be performed by applying 8 to 10.5 m 2 of elongated sheet material per 1 liter of the second glaze.

The second coating step using the second glaze may be performed by a spraying method using a spray gun, which is typically used for coating a glaze, but it is also possible to use various coating methods commonly used in related arts And the scope of the present invention is not limited to such a coating method.

The elongated plate material subjected to the second application step is then subjected to a third application step of applying a third glaze containing 3 to 5 parts by weight of water-soluble potassium methylsilicone.

The third glaze used in the third application step serves to impart particularly good water resistance and chemical resistance to the elvan plate.

The third application step using the third glaze can be carried out by applying 16 to 18 m 2 of elongated plate material per 1 liter of the third glaze.

As described above, the elvan plate material subjected to the first to third coating steps has the feature that the surface water repellency by spraying is about 100.

After the first coating step to the third coating step, an additional drying step and a baking step may be performed.

The secondary drying step performed after the third application step may be performed by drying the elbow plate material having been subjected to the glaze application treatment at 50 to 80 ° C for 1 to 3 hours, The glaze penetrates evenly into the elvan granite and penetrates deeper into the granite so that it can be stably positioned inside the granite.

Particularly, the second drying step is performed to dry the low temperature glaze penetrated into the inside and inside of the granite processed stone, which has been subjected to the coloring process through the first to third coating steps, to further stabilize the permeability low temperature glaze coloring .

In this manner, the first glaze, the second glaze, and the third glaze are stably penetrated into the rough granite plate up to the second drying step. In order to stably exhibit the chemical resistance and the waterproofing property of the glaze thus penetrated, The following firing step is performed.

The sintering step may be performed after the secondary drying step, and may be performed by heating the elbow plate to a temperature of 650 to 1,150 캜.

Table 1 below shows the steps of physico-chemical change of various compounds used in the method of producing the granite sheet according to the present invention by temperature.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. However, the scope of the present invention is not limited to the following examples.

Production Examples 1 to 8

Methyl-triethoxysilane or 3-glycidyloxypropyltrimethoxysilane and? -Aminopropyltriethoxysilane were evenly mixed at the component ratios shown in the following Table 2, and the mixed silane mixture Was added with isopropanol and finely pulverized zeolite and stirred while heating at a temperature of about 60 DEG C, and silica sol and frit were dropped thereon to prepare a first glaze, and silica sol, titania, or alumina sol and a coloring metal ion pigment To prepare a second glaze, and a third glaze was prepared using water-soluble potassium methyl silicone.

(Unit: g) (A: methyl-triethoxysilane, B: 3-glycidyloxypropyltrimethoxysilane / C: gamma -aminopropyltriethoxysilane / D: isopropanol / E: M: silica sol / N: frit / O: fulvic acid, G: sulphate, H: mordenite, I: erionite, J: heulandite, S: zirconium chloride, T: manganese chloride, U: chromium chloride, V: cobalt chloride / W: potassium methyl silicone)

Production Examples 9 to 16

For comparison of the effects of the present invention, glazes were prepared in the same manner as in Preparation Examples 1 to 8 in the same proportions as in Table 3 below.

Examples 1 to 8

Eight elaborate plate materials having a size of 1 m x 1 m x 3 cm in width x length x thickness were prepared and dried at a temperature of about 60 DEG C for about 1 hour and 30 minutes. 200 ml of the first glaze, 100 ml of the second glaze and 60 ml of the third glaze were sprayed sequentially, and the mixture was dried at a temperature of about 60 ° C for about 1 hour and 30 minutes, For about 30 minutes to prepare an elvan sheet according to Examples 1 to 8 of the present invention.

Comparative Examples 1 to 8

Eight elaborate plate materials having dimensions of 1 x 1 x 3 cm in width x length x thickness were prepared and dried at a temperature of about 60 DEG C for about 1.5 hours. 200 ml of the first glaze, 100 ml of the second glaze and 60 ml of the third glaze were sprayed sequentially, and the mixture was dried at a temperature of about 60 ° C for about 1 hour and 30 minutes, For about 30 minutes to produce a warp sheet according to Comparative Examples 1 to 8.

[Chemical resistance test]

The chemical resistance test was conducted in accordance with ASTM C 267 using the elvan sheet manufactured according to Examples 1 to 8 and Comparative Examples 1 to 8, and a 5% sulfuric acid solution was applied to the surface of the sheet material. After 7 days, (Item A) and whether or not the surface layer was detached (item B) were observed with the naked eye, and the results are shown in Table 4 below. (Grade 1: no discoloration / discoloration at all, grade 2: slight discoloration / discoloration but at a very minimal level, grade 3: discoloration / discoloration that is visibly evident in the naked eye) 1cm2 or more, 4th grade: 10cm2 or more discoloration / detachment area, which is clearly observed with the naked eye, 5th grade: there is more than 30cm2 discoloration /

In the results of Table 4, it can be seen that there is almost no discoloration and surface layer detachment in the elvan sheet materials of Examples 1 to 8 manufactured according to the present invention, but in Comparative Examples 1 to 8, discoloration and surface layer decoloration Is relatively high.

[Water resistance (water repellency) test]

50 ml of purified water was sprayed onto the surface of each plate using the elvan plates prepared according to Examples 1 to 8 and Comparative Examples 1 to 8, and then the water droplets formed on the surface of the plate contact the tangent of the portion contacting the surface, The water resistance (water repellency) was measured by measuring the angle formed by the angle, and the angle is shown in Table 5 below.

The results of Table 5 show that the ergonomic sheets of Examples 1 to 8 produced according to the present invention have excellent water resistance (water repellency), but in Comparative Examples 1 to 8, it is confirmed that the water resistance is very low .

[Color uniformity test]

The color uniformity was tested using the elvan sheet manufactured according to Examples 1 to 8 and Comparative Examples 1 to 8, and the results are shown in Table 6 below. The color uniformity was determined by determining the circular points of 9 cm in diameter and 5 cm in diameter, which are located at equal intervals on one granite plate, comparing the colors of the nine colors by naked eyes to evaluate the uniformity of colors. (Grade 1: no nonuniformity point, which is clearly visible to the naked eye, grade 2: one uneven point which is visually evident, grade 3: two uneven points which are visually evident in the eye, 4 grades: there are 3 uneven points which are visually recognized by the naked eye, 5 grades: there are more than 4 uneven points which are visually confirmed).

The results of Table 6 indicate that the ergonomic sheets of Examples 1 to 8 produced according to the present invention exhibit a very uniform color. In Comparative Examples 1 to 8, however, it is confirmed that the colors are relatively uneven .

Claims

A primary drying step of drying the elvan sheet material at 50 to 80 캜 for 1 to 3 hours;
15 to 20 parts by weight of methyl-triethoxysilane (MTEOS) or 3-glycidyloxylpropyl trimethoxysilane (GPTMS) is added to the surface of the primary dried elvan plate, 12 to 15 parts by weight of -aminopropyltriethoxysilane, 7 to 10 parts by weight of isopropanol, 23 to 28 parts by weight of zeolite and 15 to 20 parts by weight of silica sol, And 8 to 12 parts by weight of a frit;
(4) to 7 parts by weight of silica sol, titania or alumina sol and 5 to 10 parts by weight of a coloring metal ion pigment on the surface of the elvan-coated sheet material to which the first glaze is applied 2 a second application step of applying a glaze; And
And a third application step of applying a third glaze containing 3 to 5 parts by weight of water-soluble potassium methylsilicone to the surface of the elvan plate coated with the second glaze. Gt;

The method according to claim 1,
The zeolite may be selected from the group consisting of clinoptilolite, analcime, chabazite, mordenite, erionite, heulandite, phillipsite, ), And ferrienrite. The method according to any one of claims 1 to 3,

The method according to claim 1,
The colored metal ion pigments are iron chloride (FeCl2), zirconium chloride (ZrCl _2), chloride, manganese (MnCl _2), chloride, chromium (CrCl _2), and cobalt chloride (CoCl ₂₎ Chemical resistance selected one or more from the group consisting of And a waterproof property.

The method according to claim 1,
Further comprising a second drying step of drying the elbow plate at 50 to 80 캜 for 1 to 3 hours after the third application step.

The method of claim 4,
Further comprising a sintering step of heating the elvan plate to a temperature of 650 to 1,150 DEG C after the secondary drying step.