KR101420408B1 - Watersoluble ceramic resin and the manufacturing method of the water-based paint for exterior decorating using it, and the painting method using the same - Google Patents

Abstract

The present invention relates to a method of preparing a water-soluble ceramic resin, a method of preparing a water-based paint for exterior decoration using the water-soluble ceramic resin, and a painting method using the same. More particularly, the present invention relates to a method of preparing a water-soluble ceramic resin, a method of preparing a water-based paint for exterior decoration using the water-soluble ceramic resin, and a painting method using the same, in which a core portion is composed of a ceramic resin, and a shell portion is composed of urea, thereby exhibiting excellent water resistance, adhesive properties, flame retardancy, weatherproof properties, and incombustibility. The method of the present invention comprises a first step of making a urea resin and isocyanate react with a compound having two or more hydroxyl groups to prepare polyurea isocyanate; and a second step of making the polyurea isocyanate react with a ceramic resin to prepare a ceramic resin.

Description

TECHNICAL FIELD [0001] The present invention relates to a water-based ceramic resin, a method for manufacturing an aqueous coating material using the aqueous ceramic resin, and a coating method using the water-based ceramic resin. same}

The present invention relates to a method for producing an aqueous ceramic resin, a method for manufacturing an external water-based coating material using an aqueous ceramic resin, and a coating method using the same. More particularly, the core part is made of a ceramic resin, The present invention relates to a method for producing an aqueous aqueous ceramic resin excellent in water resistance and excellent in adherence, scratch resistance, water resistance, flame retardancy, weather resistance and nonflammability by being made of urea and a method for producing a water- And a coating construction method using the same.

In general, painting on concrete structures is started to prevent corrosion of concrete, and its application is gradually increasing due to repair painting and landscape enhancement painting.

Concrete Structures and Underground Carriages Tunnels inside and outside are used mainly for the purpose of improving the durability of concrete and for improving the visibility of structures, underground roads and tunnels.

The main causes of shortening the lifespan of concrete structures are salinization, alkali silicate reaction (ASR), cracking of concrete, neutralization of concrete, underground roadway and vehicle smoke gas in tunnel. It is a phenomenon that cracks or peeling occurs in concrete due to the corrosion and expansion of the reinforcing bar caused by the salinity. Usually, it prevents the saltification by a method of increasing the thickness of the epoxy resin coating or the concrete cover.

In addition, the alkali silica reaction refers to a phenomenon in which a product generated by the reaction of the reactive silica in the aggregate and the alkali contained in the concrete causes cracks in the concrete by absorbing water and expanding. In order to suppress the reaction, .

Cracks in concrete are caused by the drying shrinkage and construction conditions of the concrete. The cracks generated by the cracks are the penetration of oxygen, carbon dioxide gas, acid gas, and water in the air, resulting in neutralization of concrete, As shown in Fig. These concrete cracks can also prevent corrosion from being extended by painting.

In addition, neutralization of concrete, deterioration of concrete by underground roadway and pollution source inside the tunnel absorbs the air carbonated gas inside the concrete from the surface and gradually neutralization progresses. The coating formed by the painting is blocked or selectively transmitted It is also effective as countermeasures against the neutralization of concrete.

Organic materials, composite materials, permeable waterproof materials, and inorganic materials are used as coating materials for civil engineering concrete structures having various purposes and effects as described above. Of these, organic epoxy resins and urethane resins are mainly used.

Since the epoxy resin is excellent in adhesion to concrete, alkali resistance and mechanical strength, it is widely used as a primer and a protective layer. Urethane resin is widely used as a protective layer because of its excellent weatherability and flexibility and flexibility. .

However, since the conventional coating material has to be formed on the surface of the concrete several times in the order of low, middle, and top, the work takes a long time and the coating cost increases.

According to the prior art, Korean Patent Registration No. 10-1035006 discloses a multi-layer coating film for a water treatment facility, a coating method thereof, and a water treatment facility including the same, wherein the main technical features are water of a concrete structure water treatment facility A coating layer of a mixture comprising a high viscosity, non-solvent type epoxy coating composition as a primer layer and a silica-based filler, a coating layer of a hyper fast curing polyurea coating composition comprising an ultraviolet light stabilizer as a middle layer, And a coating layer of a non-staining fluororesin composition.

That is, the above-mentioned prior art also requires coating several times using various kinds of coating compositions for coating, which takes a long time and increases the cost of painting.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art as described above, and it is an object of the present invention to provide a method of manufacturing a semiconductor device, in which a core portion is made of a ceramic resin and a shell portion is made of a urea, It is an object of the present invention to provide a method for producing a water-based ceramic resin excellent in water resistance and excellent in adhesion, scratch resistance, water resistance, flame retardancy, weather resistance and nonflammability by having both chemical and physical properties and organic chemical processing characteristics.

Another object of the present invention is to provide a method for manufacturing an external water-based coating material containing an aqueous ceramic resin.

Another object of the present invention is to provide a coating method using a water-based non-flammable urea-modified ceramic paint for exterior use.

According to another aspect of the present invention, there is provided a method of manufacturing an aqueous ceramic resin,

A first step of reacting a urea resin and an isocyanate with 1,4-butanediol or 1,2-cyclohexanediol to prepare a polyurea isocyanate; A second step of reacting the polyurea isocyanate with a ceramic resin to prepare an aqueous urea ceramic resin; And a third step of mixing and reacting the aqueous urea ceramic resin produced in the second step with water, an ammonium resin, and an admixture, and in the third step, the total amount of the aqueous urea ceramic resin 45.0% by weight of aqueous urea ceramic resin, 25.0% by weight of water, 28.9% by weight of ammonium resin and 0.8% by weight of an admixture are mixed and reacted.

At this time, in the first step, the urea resin is reacted with 1,4-butane diol or 1,2-cyclohexane diol to completely dissolve the polyurea in the initial stage of the reaction, and then the isocyanate is added to proceed the reaction.

In the third step, the reaction is carried out at a temperature of 80 to 90 ° C. for 2 hours.

In the meantime, a method for producing an external water-based coating material using the aqueous ceramic resin according to the present invention comprises:

(A), 25 to 60 wt% of an aqueous ceramic resin, 20 to 50 wt% of water, 15 to 35 wt% of a phosphorus (P) -based fire retardant, and 0.5 to 1.0 wt% of a defoaming agent.

At this time, the mixed composition is reacted at a temperature of 80 to 90 ° C for 2 hours, neutralized with triethanolamine (TEA) after completion of the reaction, and adjusted to have a pH of 6.0 to 8.5.

Meanwhile, the coating method using the water-based coating composition for external use according to the present invention,

The water-based exterior paint using an aqueous ceramic resin is used as a surface protecting material for civil engineering structures or a paint for internal use in an underground road tunnel.

According to the present invention, the core portion is made of a ceramic resin and the shell portion is made of urea, thereby increasing the water resistance, which is the greatest disadvantage of the acrylic resin, while maintaining excellent physical properties of the acrylic resin At the same time, it has an excellent effect of improving adhesion, scratch resistance, water resistance, flame retardancy, weather resistance and nonflammability.

Hereinafter, preferred embodiments of a method for producing an aqueous ceramic resin according to the present invention, a water-based coating composition using the same, and a coating method using the same will be described in detail.

The present invention is characterized in that a core portion is made of a ceramic resin and a shell portion is made of a urea so that a water-based ceramic excellent in water resistance and excellent in adhesiveness, scratch resistance, water resistance, flame retardancy, The present invention relates to a method for producing a water-based ceramic resin, which comprises a first step for preparing a polyurea isocyanate and a second step for preparing an aqueous urea ceramic resin And two stages of manufacture.

That is, the water-based ceramic resin according to the present invention is an organic-inorganic hybridization structure having an organic / inorganic substituent group composed of a siloxane skeleton and is formed to have a fluorine molecular structure substituted on the urea-carbon skeleton of an organic material, It is a silicone-based ceramic resin which also serves as an organic chemical processing property.

More specifically, in the first step, the urea resin (Urea Resin) and the isocyanate are reacted with 1,4-butane-diol or 1,2-cyclohexane diol, With a compound having two or more hydroxyl groups (OH-), such as urea, to produce polyurea isocyanate. The urea resin is a colorless transparent thermosetting resin obtained by reacting urea and formaldehyde, and is relatively inexpensive , There is an advantage that the adhesive strength is large and curing proceeds rapidly.

Also, the isocyanate means a compound having at least one -NCO functional group, and is produced mainly by the phosgene method in which a raw material amine is reacted with phosgene.

At this time, in the first step, the urea resin is reacted with a compound having two or more hydroxyl groups to completely dissolve the polyurea at the initial stage of the reaction, and then the isocyanate is added thereto to conduct the reaction to produce the polyurea isocyanate.

Next, the second step is a step of reacting the polyurea isocyanate produced in the first step with a ceramic resin to prepare an aqueous urea ceramic resin, and the reaction proceeds slowly at a reaction temperature of about 50 to 70 ° C.

The aqueous urea ceramic resin produced by the above process has a core portion made of a ceramic resin and a shell portion made of urea, thereby increasing the water resistance, which is the biggest disadvantage of the acrylic resin, while maintaining the excellent physical properties of the conventional acrylic resin .

Meanwhile, the method for producing an aqueous ceramic resin according to the present invention further comprises a third step of mixing and reacting the aqueous urea ceramic resin prepared in the second step with an ammonium resin having excellent thermal stability, flame retardancy, heat insulation and abrasion resistance, More specifically, in the third step, the aqueous urea ceramic resin is mixed with 45.0% by weight of water, 25.0% by weight of water, 28.9% by weight of ammonium resin, 0.8% by weight of an admixture and 0.3% .

That is, when the above components are mixed in a reaction vessel and heated at 80 to 90 ° C for about 2 hours to react, the production of the aqueous ceramic resin is completed.

The water-based ceramic resin thus produced has excellent advantages of adhesion, scratch resistance, water resistance, flame retardancy, weather resistance, and non-flammability.

Next, a method for manufacturing an external water-based coating material using the aqueous ceramic resin according to the present invention relates to a method for manufacturing a water-based exterior coating material used for coating a building using the aqueous ceramic resin produced by the above- The composition of such an exterior water-base paint comprises 25 to 60% by weight of an aqueous ceramic resin, 20 to 50% by weight of water, 15 to 35% by weight of a phosphorus-based fire retardant, 0.5 to 1.0% by weight of an antifoaming agent and other components .

More specifically, a phosphorus (P) type fire retardant containing a nonflammable substance and an antifoaming agent for eliminating bubbles contained in the paint are added to an aqueous ceramic resin having the above-mentioned advantages, and the mixture is emulsified by water dispersion Followed by a reaction at a temperature of 80 to 90 DEG C for about 2 hours to prepare a water-based exterior coating material.

After the reaction as described above, triethanolamine (TEA) is added to neutralize the solution to a pH of 6.0 to 8.5, thereby completing a water-based exterior coating having a molecular weight of about 150 to 200.

Since the water-based paint for exterior use manufactured by the above-mentioned process contains a ceramic resin, moisture of the concrete structure can be discharged through the paint due to its air-permeable function, so that even when moisture is present on the surface of the concrete structure, the durability and adhesion .

Table 1 below shows the test results of the external water-based coating material containing the aqueous ceramic resin produced by the method of manufacturing the external water-based coating material according to the present invention.

Item Exam conditions Contents Example Appearance of Coat


After standard curing The coating is uniform, and there is no flow, stain, swelling, cracking, or peeling. clear After accelerated weathering test No whitening, no swelling, cracks, peeling, etc. clear After repeated heating and cooling No swelling, cracks, peeling, etc. clear After my alkaline test No swelling, cracks, peeling, etc. clear Salt barrier property After standard curing The chlorine ion permeability of the coating film is 0.05 mg / cm 2 or less 0.001 mg / cm 2 Oxygen permeation resistance After standard curing Oxygen permeation amount of coating film is 0.05 mg / cm 2 or less 0.003 mg / cm 2 Underwater permeability After standard curing The water vapor permeability of the coating film is 0.05 mg / cm 2 or less 0.01 mg / cm 2 Neutralization resistance After neutralization acceleration test Neutralization depth less than 1mm 0
Adhesion to concrete
After standard curing
Adhesive strength between coating and concrete is over 10kg / ㎠ 15 kg / cm 2 After accelerated weathering test 13 kg / cm 2 After repeated heating and cooling 14 kg / cm 2 After my alkaline test 12 kg / cm 2
Crack follow-up After standard curing (at room temperature) The elongation of the coating film is 0.4 mm or more. 0.45mm After standard curing (at low temperature) Elongation of coating film is 0.2 mm or more
0.25 mm After accelerated weathering test (at room temperature) 0.22 mm nonflammable Ministry of Land, Transport and Maritime Affairs Notice No. 2006-476 Nonflammable material Nonflammable material Stain resistance Washability Excellent (more than 2,000 times) Excellent Surface hardness - 3H or more 4H

That is, the water-based exterior coating according to the present invention has characteristics of an inorganic ceramic coating as a whole, so that it is excellent in durability, and is characterized in that the appearance such as color and gloss can be retained for a long period of time.

More specifically, the ceramic resin is bonded to the silicon resin through the Si-O-Si bonding energy of the silicone resin, so that the water tank factor around the ordinary organic resin is hardly released, and the excitation by light and the subsequent oxidation are difficult Thereby not only improving the durability but also obtaining excellent results in gloss and complementarity.

Also, because of the content of phosphorus (P) fire retardant, it can be used as a coating material for tunnel inside the underground roadway as incombustible material, and when it is used as a surface protection material for civil structure, it improves durability and safety .

Therefore, according to the water-based ceramic resin according to the present invention and the method for producing a water-based exterior paint using the same and the coating method using the same, the core portion is made of a ceramic resin and the shell portion is made of urea urea), it is possible to increase the water resistance, which is the greatest disadvantage of the acrylic resin, while maintaining the excellent physical properties of the acrylic resin, and at the same time, it can improve the adhesiveness, scratch resistance, water resistance, flame retardancy, weatherability and incombustibility .

Although the preferred embodiments of the present invention have been described for illustrative purposes, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without materially departing from the novel teachings and advantages of this invention.

The present invention relates to a water-based ceramic resin, a method for producing an external water-based paint using the same, and a coating method using the same. More particularly, the core part is made of ceramic resin and the shell part is made of urea. To a water-based ceramic resin excellent in water resistance, adhesion, scratch resistance, water resistance, flame retardancy, weather resistance and nonflammability, and a method for producing a water-based exterior coating using the same and a coating application method using the same.

Claims (6)

A first step of reacting a urea resin and an isocyanate with 1,4-butanediol or 1,2-cyclohexanediol to prepare a polyurea isocyanate;
A second step of reacting the polyurea isocyanate with a ceramic resin to prepare an aqueous urea ceramic resin; And
And a third step of mixing and reacting the aqueous urea ceramic resin produced in the second step with water, an ammonium resin, and an admixture,
In the third step, the aqueous urea ceramic resin is mixed with 45.0 wt% of water, 25.0 wt% of water, 28.9 wt% of ammonium resin, and 0.8 wt% of an admixture, based on the total amount of the aqueous ceramic resin, By weight based on the total weight of the aqueous resin composition.
The method according to claim 1,
In the first step, the urea resin is reacted with 1,4-butane diol or 1,2-cyclohexane diol to completely dissolve the polyurea in the initial stage of the reaction, and then the isocyanate is added to proceed the reaction.
The method according to claim 1,
And in the third step, the reaction is carried out at a temperature of 80 to 90 ° C for 2 hours.
A process for producing a water-based ceramic composition, comprising: preparing a water-based ceramic resin according to any one of claims 1 to 3 in an amount of 25 to 60 wt%, water 20 to 50 wt%, phosphorus (P) To 1.0% by weight of the water-based ceramic resin.
5. The method of claim 4,
Wherein the mixed composition is reacted at a temperature of 80 to 90 캜 for 2 hours and neutralized with triethanolamine (TEA) after completion of the reaction to adjust the pH to be 6.0 to 8.5. ≪ / RTI >
A paint application method using an external water-based paint using the aqueous ceramic resin according to claim 5 as a surface protecting material for civil engineering structures or a paint for an interior underground road tunnel.