KR102184866B1 - Ceramic Coating Agent Having Mixed Silane and Method for Waterproof and Coating Thereof - Google Patents

Abstract

The present invention relates to a ceramic coating agent capable of remarkably improving properties of a substrate such as chemical resistance, high hardness and the like by containing a complex silane and a metal oxide sol on the surface of a substrate such as iron or concrete and the like, and a waterproof coating construction method using the same. The ceramic coating agent using complex silane according to the present invention can significantly improve properties of the substrate such as chemical resistance and high hardness by coating the ceramic coating agent.

Description

Ceramic Coating Agent Having Mixed Silane and Method for Waterproof and Coating Thereof}

The present invention relates to a ceramic coating agent and a waterproof coating method using a complex silane. More specifically, it relates to a ceramic coating agent capable of remarkably improving the properties of the substrate such as chemical resistance and high strength by containing complex silane and metal oxide sol on the surface of a substrate such as iron or concrete, and a waterproof coating method using the same.

Concrete or steel structures are rapidly deteriorating due to corrosion deterioration of structures as they come into contact with chlorine or acid gas or direct acid wastewater. Various materials and methods have been developed to repair deteriorated sections of concrete or steel structures exposed under such an environment. Moreover, since concrete or steel structures such as water purification plants or water tanks purify water with chlorine, ozone, etc., deterioration is promoted by exposure to these substances. The method is being applied.

As the coating-based waterproofing and anticorrosive method, in general, paints composed of organic components such as epoxy-based, urethane-based and acrylic resin paints are mainly used. Paints made of organic ingredients have the advantage of excellent processability and excellent adhesion and flexibility, but the organic matter forming the coating film is easily deteriorated by ultraviolet rays, ozone or moisture, causing harmful substances to be eluted or durability deteriorated. There is this. Furthermore, since conventional functional coatings can only provide some limited performance, in order to improve various types of properties, each functional coating must be coated in duplicate or triple on the substrate, which increases the cost and makes the operation inconvenient and limited in application. There is a problem.

As a related art, the following Patent Document 01 discloses "a transparent multifunctional coating composition containing a metal oxide-sol and a fluororesin in an alkyl polysiloxane". However, the above technology is only to improve the properties of the substrate by providing properties such as chemical resistance, abrasion resistance, and corrosion protection to the surface of the substrate to be coated, and the properties such as chemical resistance and high hardness are insufficient.

In addition, the following Patent Document 02 discloses a "permeable waterproof coating method excellent in chemical resistance". However, the above technology uses inorganic nanomaterials penetrating when painting concrete structures, ceramic coatings added with zirconium compounds and fluorine silanes with chemical resistance to reinforce adhesion. There is a problem in that the coating film is dense by penetrating the pores, the adhesion is strengthened, so that it has excellent chemical resistance, and the characteristics such as high hardness do not reach a satisfactory level.

In addition, the following Patent Document 03 discloses a "permeable waterproof coating method excellent in chemical resistance and adhesion strength". However, the above technology uses a ceramic coating agent added with a permeable inorganic nanomaterial, a zirconium compound to enhance adhesion, and a fluorine silane having a chemical resistance function when painting water-treated concrete structures. The coating film is dense by penetrating the pores, and the adhesion is strengthened to have excellent chemical resistance, and characteristics such as high hardness do not reach a satisfactory level, and the construction method is complicated.

Therefore, the present inventors completed the present invention by finding out that characteristics such as chemical resistance and high hardness were excellent while studying a ceramic coating agent using a composite silane and a waterproof coating method using the same.

Registered Patent Publication No. 10-0463926 (2004. 12. 20.) Registered Patent Publication No. 10-1892898 (2018. 8. 22.) Registered Patent Publication No. 10-1892899 (2018. 8. 22.)

The present invention was conceived to solve the above-described problems as described above, by coating a ceramic coating agent containing a complex silane and a metal oxide sol on the surface of a substrate such as iron and concrete, thereby improving the properties of the substrate such as chemical resistance and high hardness. It is to provide a ceramic coating that can be dramatically improved and a waterproof coating method using the same.

In order to achieve the object as described above, the present invention 1) a ceramic coating agent for undercoat comprising 20 to 40 parts by weight of an alkyltrialkoxy silane, 1 to 5 parts by weight of a base catalyst, and 30 to 50 parts by weight of a metal oxide sol; 2) an intermediate ceramic coating agent in which 60 parts by weight of an inorganic pigment of titanium dioxide or cyan blue, and 2 parts by weight of an additive are added to 95 parts by weight of the ceramic coating agent for undercoat; 3) a ceramic coating agent for a top coat in which 1 to 5 parts by weight of fluorine silane and 5 to 10 parts by weight of a fluorine resin are added to 157 parts by weight of the intermediate ceramic coating agent.

In addition, the present invention 1) in order to remove the foreign substances present on the surface of the concrete structure or steel structure, the step of making a base surface cleaning and cleaning work to remove the foreign material of the deformation, peeling, weathered part; 2) 12 hours by adding 30 to 50 parts by weight of a metal oxide sol of 10 to 30 nm to a solution in which 1 to 5 parts by weight of a base catalyst is mixed with 20 to 40 parts by weight of an alkyltrialkoxysilane on the surface of the object to be treated in the base making step A primer treatment step of applying 0.12 to 0.28 kg/m 2 of a ceramic coating agent for primer prepared by reacting during the reaction; 3) After the primer treatment step, an intermediate treatment step of applying 0.15 to 0.45 kg/m² of a ceramic coating agent for intermediate use, in which 60 parts by weight of titanium dioxide or cyan blue inorganic pigment and 2 parts by weight of additives were added to 95 parts by weight of the ceramic coating agent for primer treatment. ; 4) After the intermediate treatment step, a top coat ceramic coating agent prepared by reacting 3 to 5 parts by weight of a fluorine silane and 3 to 5 parts by weight of a fluorine resin is applied to 157 parts by weight of the intermediate ceramic coating agent. It provides a waterproof coating method characterized in that consisting of;

On the other hand, solutions to other specific problems according to the present invention are described in the detailed description of the present invention.

The ceramic coating agent using the complex silane according to the present invention can significantly improve properties of the substrate such as chemical resistance and high hardness by coating a ceramic coating agent containing a complex silane and a metal oxide sol on the surface of the substrate.

Furthermore, the waterproof coating method using a ceramic coating agent having excellent properties such as chemical resistance and high hardness is simpler than that of the prior art, so that the cost can be greatly reduced during waterproof coating.

1 shows a network structure of a ceramic coating agent containing fluorine silane according to the present invention.
2 shows a network structure of a ceramic coating agent containing fluorine silane according to the prior art.

First, unless otherwise defined herein, scientific and technical terms used in connection with the present invention will have the meanings generally understood by those of ordinary skill in the art. In addition, unless otherwise specified in context, terms in the singular form shall include their plural forms as well, and the terms in the plural form shall also include their singular form.

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

Ceramic coating agent using a complex silane meaning two or more silanes according to the present invention: 1) A ceramic for undercoat consisting of 20 to 40 parts by weight of an alkyltrialkoxy silane, 1 to 5 parts by weight of a base catalyst, and 30 to 50 parts by weight of a metal oxide sol. Coating agents; 2) an intermediate ceramic coating agent in which 60 parts by weight of an inorganic pigment of titanium dioxide or cyan blue, and 2 parts by weight of an additive are added to 95 parts by weight of the ceramic coating agent for undercoat; 3) a ceramic coating agent for top coats to which 1 to 5 parts by weight of fluorine silane and 5 to 10 parts by weight of a fluorine resin are added to 157 parts by weight of the intermediate ceramic coating agent.

The ceramic coating agent for undercoat is preferably composed of 20 to 40 parts by weight of an alkyl trialkoxy silane, 1 to 5 parts by weight of a base catalyst, and 30 to 50 parts by weight of a metal oxide sol.

Looking at the constituents of the ceramic coating agent for undercoat, the alkyltrialkoxy silane may include methyl trimethoxysilane, methyl triethoxy silane, tetraethoxy silane, dimethyl dimethoxy silane, diphenyldimethoxysilane, and the like. , Among them, it may be one or a mixture of two or more. The alkyl trialkoxy silane is preferably mixed in an amount of 20 to 40 parts by weight. If the ratio is less than 20 parts by weight, the inorganic matter content is low, the hardness of the product is lowered, and if the ratio is more than 40 parts by weight, the storage stability of the product is weakened due to the presence of unreacted substances.

The base catalyst may include at least one selected from triethanolamine, ammonium chloride, ammonia, and sodium hydroxide. It is preferable to mix the base catalyst in an amount of 1 to 5 parts by weight. If the ratio is less than 1 part by weight, unreacted substances are present and chemical resistance deteriorates, and if the ratio is more than 5 parts by weight, the product has strong basicity, resulting in poor compatibility with the substrate, resulting in lower adhesion.

The metal oxide sol contains at least one of silica sol and titania sol, and preferably has an average particle size of 10 to 30 nm and a solid content of 5 to 30 wt%. The metal oxide sol is preferably mixed in an amount of 30 to 50 parts by weight. If the ratio is less than 30 parts by weight, the inorganic matter content is low and the hardness decreases, and if it exceeds 50 parts by weight, unreacted substances are present, resulting in poor chemical resistance.

The ceramic coating agent for undercoat is applied to the surface of a treated material such as a concrete structure or a steel structure, by adding a base catalyst to the alkyltrialkoxy silane, and adding a nanometer-sized metal oxide sol to react, and the coating film is dense and has adhesion and In order to enhance chemical resistance, it is preferable to add a metal oxide sol so that the molecular weight of the resulting reactant does not exceed 3,000. At this time, when the molecular weight of the produced reactant exceeds 3,000, the ceramic coating agent for undercoat does not penetrate the substrate, and a thick coating film is formed on the surface, thereby reducing adhesion.

In addition, it is preferable that the intermediate ceramic coating agent is added to 95 parts by weight of the ceramic coating agent for undercoat, 60 parts by weight of an inorganic pigment of titanium dioxide or cyan blue, and 2 parts by weight of an additive.

In the constituents of the intermediate ceramic coating agent, it is preferable that the additive includes all of a dispersant, an antifoaming agent, and a leveling agent.

In addition, the ceramic coating agent for the top coat is preferably 1 to 5 parts by weight of fluorine silane and 5 to 10 parts by weight of fluororesin are added to 157 parts by weight of the intermediate ceramic coating agent.

Looking at the constituents of the ceramic coating agent for the top coat, the fluorine silane can chemically react with the surface of a concrete structure to form a coating film having strong chemical resistance and durability. In addition, fluorine silane has the smallest intermolecular attraction among all compounds and has a small surface tension, so it is difficult to get wet with a solvent, so that resistance to chemicals is increased and chemical resistance can be improved.

The fluorine silane is at least one selected from heptadecafluorotetradecyltrimethoxysilane and perfluorooctyltrimethoxysilane, and is preferably mixed in an amount of 1 to 5 parts by weight. If the ratio is less than 1 part by weight, chemical resistance deteriorates, and if the ratio is more than 5 parts by weight, fluorine silane is high in cost and the product's economic feasibility decreases.

The fluororesin is at least one selected from polytetrafluoroethylene, polyvinylidene fluoride, and PFA (Perfluoroalkoxy), and is preferably mixed in an amount of 5 to 10 parts by weight. If the ratio is less than 5 parts by weight, the waterproof performance and chemical resistance are deteriorated, and if the ratio is more than 10 parts by weight, the stability of the product decreases, resulting in a layer separation phenomenon.

As described above, in the ceramic coating agent using a complex silane, the molecular structure having strong chemical resistance is a network structure in which alkyltrialkoxy silane, nano-sized metal oxide sol, and fluorine are bonded, and is characterized in that it is made as shown in [Fig. 1]. do.

Hereinafter, a waterproof coating method using the ceramic coating agent using the composite silane will be described in detail below with reference to [Figs. 1] to [Fig. 2].

The waterproof coating method according to the present invention comprises: 1) a ground-making step of cleaning and cleaning the ground surface of removing foreign materials from deformation, peeling, and weathering in order to remove foreign matters present on the surface of a concrete structure or steel structure; 2) 12 hours by adding 30 to 50 parts by weight of a metal oxide sol of 10 to 30 nm to a solution in which 1 to 5 parts by weight of a base catalyst is mixed with 20 to 40 parts by weight of an alkyltrialkoxysilane on the surface of the object to be treated in the base making step A primer treatment step of applying 0.12 to 0.28 kg/m 2 of a ceramic coating agent for primer prepared by reacting during the reaction; 3) After the primer treatment step, an intermediate treatment step of applying 0.15 to 0.45 kg/m² of a ceramic coating agent for intermediate use, in which 60 parts by weight of titanium dioxide or cyan blue inorganic pigment and 2 parts by weight of additives were added to 95 parts by weight of the ceramic coating agent for primer treatment. ; 4) After the intermediate treatment step, a top coat of 0.10 to 0.40 kg/m2 is applied with a top coat ceramic coating prepared by reacting 1 to 5 parts by weight of fluorine silane and 5 to 10 parts by weight of fluorine resin to 157 parts by weight of the intermediate ceramic coating agent. It characterized in that it consists of;

The waterproof coating method according to the present invention is a method of coating the surface of a concrete structure or steel structure with the ceramic coating agent by sequentially performing a base making step, a primer treatment step, an intermediate treatment step, and a top coat treatment step. Hereinafter, the present invention consisting of several steps as described above will be described in detail by dividing each step.

1) Base making step

The base making step is a step of removing foreign substances present on the surface of a concrete structure or a steel structure, and cleaning and cleaning the base surface to remove foreign substances such as deformation, peeling, and weathered parts of the structure.

2) Priming treatment step

In the undercoating step, 30 to 50 parts by weight of a metal oxide sol of 10 to 30 nm is added to a solution in which 1 to 5 parts by weight of a base catalyst is mixed with 20 to 40 parts by weight of an alkyltrialkoxysilane on the surface of the object to be treated in the base making step. This is a step of applying 0.12 to 0.28 kg/m 2 of a ceramic coating agent for undercoat prepared by reacting for 12 hours.

In addition, it is preferable to apply 0.12 to 0.28 kg/m 2 of a ceramic coating agent for undercoat. At this time, if the applied amount is less than 0.12 kg/m2, adhesion between the ceramic coating agent for undercoat and the surface of the structure is not sufficiently adhered, resulting in poor adhesion. When applied over 0.28 kg/m2, the surface roughness is weak and the adhesive strength is lowered.

-Manufacture of ceramic coating agent for primer

Into a reactor for producing a ceramic coating agent, 150 parts by weight of silica sol having a particle size of 10 to 30 nm and 220 parts by weight of titania sol were gradually added dropwise to 300 parts by weight of methyltrimethoxysilane. After all was added dropwise, 20 parts by weight of triethanolamine was added as a catalyst, and the reaction was continued for 12 hours to obtain a ceramic coating agent for undercoat.

3) Intermediate treatment step

The intermediate treatment step is a step of applying the intermediate ceramic coating agent to 95 parts by weight of the undercoat ceramic coating agent to which 60 parts by weight of titanium dioxide or cyan blue as an inorganic pigment and 2 parts by weight of an additive are added. Specifically, after preparing a ceramic coating agent for intermediate use by adding a dispersing agent, an antifoaming agent, and a leveling agent as additives, respectively, it may be applied in a thickness of 0.15 to 0.45 kg/m2. At this time, if the applied amount is less than 0.15 kg/m2, it is difficult not only to conceal the surface, but also the interlayer adhesion is lowered. If it is applied over 0.45 kg/m2, the coating film flows and wrinkles occur.

-Manufacturing of intermediate ceramic coating agent

The intermediate ceramic coating agent is 95 parts by weight of the ceramic coating agent for undercoat, 60 parts by weight of titanium dioxide as an inorganic pigment, 1.0 part by weight of DISPERBYK-110 as a dispersant, 0.5 parts by weight of BYK-066N as a defoaming agent, 0.5 parts by weight of BYK-333 as a leveling agent, respectively. It is prepared by inputting.

4) Top coat treatment step

The top coat treatment step is a step of applying 0.10 to 0.40 kg/m 2 of a top coat ceramic coating agent containing 1 to 5 parts by weight of fluorine silane and 5 to 10 parts by weight of fluorine resin to 157 parts by weight of the intermediate ceramic coating agent. Any one selected from heptadecafluorotetradecyltrimethoxysilane as the fluorine silane, polytetrafluoroethylene, polyvinylidene fluoride, and PFA (Perfluoroalkoxy) as a fluorine resin was added, and then aged at 80°C for 24 hours to make a ceramic coating agent for topcoat. Can be manufactured.

At this time, if the coating amount of the ceramic coating agent for the top coat is less than 0.10 kg/m2, it is difficult to conceal the intermediate surface and the interlayer adhesion is also lowered. When applied over 0.40 kg/m2, the coating film flows down and wrinkles occur.

-Manufacture of ceramic coating agent for top coat

Ceramic coating agent for top coat was added 4 parts by weight of heptadecafluorotetradecyltrimethoxysilane and 7 parts by weight of polyvinylidene fluoride as a fluorine resin to 157 parts by weight of the ceramic coating agent for top coat, and then aged at 80°C for 24 hours. To manufacture.

Hereinafter, the present invention made as described above may be better understood by the following examples, and the examples are for illustrative purposes only, and the present invention is not limited by these examples.

<Example 1>

1) In the base making step, after cleaning and cleaning the base surface to remove foreign substances on the surface of the concrete to be treated, in the primer treatment step, use a brush and roller to apply the above prepared ceramic coating agent to be 0.14 kg/㎡. I did.

2) Subsequently, the intermediate ceramic coating agent prepared above was coated at 0.25 kg/m2 using a brush, roller, and spray.

3) Finally, the ceramic coating agent for the top coat prepared above was coated at 0.25 kg/m2 using a brush, roller, and spray.

<Example 2>

Compared with Example 1, only the point that the object to be treated was made of steel instead of concrete was applied in the same manner as the rest of the process.

<Example 3>

Compared to Example 1, when preparing the ceramic coating agent for undercoat, 190 g was added instead of 300 g of methyltrimethoxysilane, but the remaining processes were the same.

<Example 4>

Compared to Example 1, when preparing the ceramic coating agent for undercoat, instead of adding 20 g of triethanolamine as a catalyst, 9 g was added, but the remaining processes were the same.

<Example 5>

Compared to Example 1, when preparing the ceramic coating agent for undercoat, only 200 g of silica sol and 350 g of titania sol were added instead of 150 g of silica sol and 220 g of titania sol, but the remaining processes were the same.

<Example 6>

Compared to Example 1, when preparing a ceramic coating agent for intermediate use, 1.0 g of DISPERBYK-110 as a dispersant, 0.5 g of BYK-066N as a defoaming agent, 0.5 g of BYK-333 as a leveling agent, 1.5 g of DISPERBYK-110 dispersant, and BYK as a defoaming agent. The only difference is that 1.0g of -066N and 1.0g of BYK-333, which is a leveling agent, were added, but the rest of the process was the same.

<Example 7>

Compared with Example 1, only 6 g of heptadecafluorotetradecyltrimethoxysilane was added instead of 4 g of heptadecafluorotetradecyltrimethoxysilane as a fluorine silane among the top coat ceramic coating agents, but the rest of the processes were the same.

<Example 8>

Compared to Example 1, the topcoat ceramic coating agent was coated with the same method as the rest of the process, except that 4 g was added instead of 7 g of polyvinylidene fluoride as a fluorine resin.

<Example 9>

Compared to Example 1, the coating was carried out in the same manner as the rest of the process, except that 0.10 kg/m 2 was applied instead of 0.14 kg/m 2 of the ceramic coating agent for undercoat.

<Example 10>

Compared to Example 1, the intermediate ceramic coating agent was applied in the same manner as the rest of the process except that 0.50 kg/m 2 was applied instead of 0.25 kg/m 2 applied.

<Example 11>

Compared to Example 1, the ceramic coating agent for the top coat was applied in the same manner, except that 0.09 kg/m 2 was applied instead of 0.25 kg/m 2.

<Comparative Example 1>

1) Mix 150g of methyltriethoxysilane and 30g of 3-aminopropyltriethoxysilane in a 5L reactor equipped with a cooler and stirrer, and then 60g of silica sol with an average particle size of 10-20 nm, 60g of titania sol and alumina sol. Each of 50 g was dripped gradually. After all was added dropwise, 20 g of acetic acid was added and the reaction was continued for 12 hours to obtain a ceramic coating agent for undercoat.

2) To 95 g of the undercoat ceramic coating agent, 60 g of titanium dioxide as an inorganic pigment, 1.0 g of DISPERBYK-110 as a dispersant, 0.5 g of BYK-066N as a defoaming agent, and 0.5 g of BYK-333 as a leveling agent were added to prepare a ceramic coating agent for intermediate use.

3) As a topcoat ceramic coating agent, 4 g of heptadecafluorodecyltrimethoxysilane was added as a fluorine silane to 157g of the ceramic coating agent for the top coat, and it was aged at room temperature for 5 days to prepare a top coat ceramic coating agent, but the rest are examples. It was painted in the same manner as in 1.

<Comparative Example 2>

Compared with Comparative Example 1, only the point that the object to be treated is steel instead of concrete was applied in the same manner as the rest of the process.

In the following, performance tests on the test pieces prepared in Examples 1 to 11 and Comparative Examples 1 and 2 were performed as follows.

<Experimental Example>

1. Chemical resistance

end. Acid resistance

According to KS M ISO 2812-1, the sample was immersed in a 10% sulfuric acid aqueous solution at room temperature for 7 days, washed sufficiently with clean water, dried and evaluated.

I. Alkali resistance

According to KS M ISO 2812-1, the sample was immersed in 10% sodium hydroxide aqueous solution at room temperature for 7 days, washed thoroughly with clean water, and dried for evaluation.

2. Hardness

It evaluated using a pencil by the method according to ASTM D 3363-05.

3. Adhesiveness

Acid resistance and alkali resistance were evaluated in accordance with KS F 4716 after carrying out the same method as the chemical resistance.

4. Adhesion strength after ozone resistance

After proceeding with the method according to SPS KWWA M211, the adhesion strength was measured according to KS F 4716.

5. Permeability

It evaluated by the method according to KS F 4930.

Experimental results by example division Chemical resistance pencil
Hardness
(H) Adhesion strength after chemical resistance (MPa) Adhesion strength after ozone resistance
(MPa) permeability
(Mm) Acid resistance My alka
Lee Sung Acid resistance Alkali resistance Example 1 no problem no problem 9 3.15 3.27 3.10 5.5 Example 2 no problem no problem 9 14.00 13.50 13.50 - Example 3 Lee Sang Yu Lee Sang Yu 6 2.50 2.40 2.50 4.0 Example 4 no problem no problem 8 2.91 2.98 2.84 3.5 Example 5 no problem no problem 7 2.80 2.80 2.80 3.6 Example 6 no problem no problem 6 2.90 2.90 3.00 3.8 Example 7 no problem no problem 8 3.00 3.10 2.90 3.2 Example 8 no problem no problem 9 2.85 2.90 2.70 3.4 Example 9 no problem no problem 7 2.74 2.80 2.65 3.3 Example 10 Lee Sang Yu Lee Sang Yu 8 2.40 2.55 2.35 2.8 Example 11 no problem no problem 8 2.64 2.70 2.54 2.5 Comparative Example 1 Lee Sang Yu Lee Sang Yu 5 1.90 1.80 2.10 1.8 Comparative Example 2 Lee Sang Yu Lee Sang Yu 6 7.50 8.00 7.00 -

Looking at [Table 1], which is the result of various tests for Examples 1 to 11 and Comparative Examples 1 and 2 above, the amount of ceramic coating applied according to the waterproof coating method according to the present invention and the numerical limit range of fluorine silane and fluororesin Examples 1 and 2, which are the most preferred examples within the range, are excellent in chemical resistance, adhesion, adhesion strength, hardness and permeability of all items compared to Examples 3 to 11 and other comparative examples 1 and 2 outside the range. It can be seen that there is performance.

In particular, it can be seen that in Examples 1 and 2, since the fluorine resin was added instead of the fluorine silane of Comparative Examples 1 and 2, and a base catalyst was used instead of an acid catalyst as a curing catalyst, properties such as chemical resistance and high hardness were very good.

The present invention has been described above with reference to examples and drawings, but this corresponds to an exemplary one, and those of ordinary skill in the relevant technical field will not depart from the spirit and scope of the present invention described in the following claims. It will be understood that various modifications and changes can be made to the present invention within the scope of not. Many embodiments other than the above-described embodiments are within the scope of the claims of the present invention.

Claims (14)

1) 20 to 40 parts by weight of one or two or more alkyltrialkoxy silanes selected from methyl trimethoxysilane, methyl triethoxy silane, tetraethoxy silane, dimethyl dimethoxy silane and diphenyldimethoxy silane, triethanolamine, ammonium chloride , Ammonia, a metal oxide sol containing 1 to 5 parts by weight of a base catalyst selected from sodium hydroxide, at least one of silica sol and titania sol, and having an average particle size of 10 to 30 nm and a solid content of 5 to 30 wt% Ceramic coating agent for undercoat consisting of 30 to 50 parts by weight;
2) an intermediate ceramic coating agent in which 60 parts by weight of an inorganic pigment of titanium dioxide or cyan blue, and 2 parts by weight of an additive are added to 95 parts by weight of the ceramic coating agent for undercoat;
3) a top coat ceramic coating agent added with 1 to 5 parts by weight of fluorine silane and 5 to 10 parts by weight of fluorine resin to 157 parts by weight of the intermediate ceramic coating agent,
The fluororesin is any one or more selected from polytetrafluoroethylene, polyvinylidene fluoride, and PFA (Perfluoroalkoxy). A ceramic coating agent using a complex silane. delete delete delete The method of claim 1,
The additive is a ceramic coating agent using a complex silane that is a dispersing agent, an antifoaming agent, and a leveling agent.
The method of claim 1,
The fluorine silane is a ceramic coating agent using at least one complex silane selected from heptadecafluorotetradecyltrimethoxysilane and perfluorooctyltrimethoxysilane.
delete 1) In order to remove foreign substances present on the surface of a concrete structure or steel structure, a foundation making step of cleaning and cleaning the ground surface to remove foreign materials from deformation, peeling, and weathered parts;
2) Methyl trimethoxysilane, methyl triethoxy silane, tetraethoxy silane, dimethyl dimethoxy silane and diphenyl on the surface of the object to be treated in the base making step
In a solution of 20 to 40 parts by weight of one or two or more alkyltrialkoxysilanes selected from dimethoxy silane and 1 to 5 parts by weight of one or more base catalysts selected from triethanolamine, ammonium chloride, ammonia, and sodium hydroxide in silica sol and titania sol. 30 to 50 parts by weight of a metal oxide sol containing at least one selected, having an average particle size of 10 to 30 nm, and a solid content of 5 to 30 wt%
A primer treatment step of applying 0.12 to 0.28 kg/m 2 of a ceramic coating agent for primer prepared by reacting for 12 hours;
3) After the primer treatment step, an intermediate treatment step of applying 0.15 to 0.45 kg/m² of a ceramic coating agent for intermediate use, in which 60 parts by weight of titanium dioxide or cyan blue inorganic pigment and 2 parts by weight of additives are added to 95 parts by weight of the ceramic coating agent for primer treatment. ;
4) After the intermediate treatment step, a top coat of 0.10 to 0.40 kg/m2 is applied to a top coat ceramic coating prepared by adding 1 to 5 parts by weight of fluorine silane and 5 to 10 parts by weight of fluorine resin to 157 parts by weight of the intermediate ceramic coating agent. It consists of steps;
The fluororesin is a waterproof coating method, characterized in that at least one selected from polytetrafluoroethylene, polyvinylidene fluoride, and PFA (Perfluoroalkoxy).
delete delete delete The method of claim 8,
The additive in the intermediate treatment step is a dispersant, a defoaming agent, and a leveling agent.
The method of claim 8,
In the topcoat treatment step, the fluorine silane is at least one selected from heptadecafluorotetradecyltrimethoxysilane and perfluorooctyltrimethoxysilane.
delete

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