KR101132178B1 - The method of treating the suface of cement concrete by multi color paint - Google Patents

Abstract

PURPOSE: A processing method of concrete surface using multi-colored paint is provided to form a natural stone textured film layer and improve durability by processing the concrete surface using liquid multi-colored water paint. CONSTITUTION: A processing method of concrete surface using multi-colored paint comprises the following steps: pre-treating the concrete surface with high-pressured air of 150-200kg f/ cm^2; base coating the pre-processed concrete surface with a base coating composition; coating immiscible multi-colored aqueous paint for middle coating on the based coated layer; and coating the completely dried middle layer with aqueous paint composition for top coating and dry the top coating. The base coating composition comprises 95-97 weight% of primer and 3-5 weight% of silane coupling agent. The aqueous paint composition for top coat comprises 60 weight% of water, 22 weight% of acrylic polymer, 7.4 weight% of urethane polymer, 3.5 weight% of polypropylene glycol, 3 weight% of amorphous precipitation silica, 2.5 weight% of diethylene glycol n-hexyl ether, and 1.6 weight% of 1-methyl-2-pyrrolidon.

Description

The method of treating the suface of cement concrete by multi color paint}

The present invention relates to a method for treating concrete surfaces by multi-color paints. The surface of the concrete is pretreated and then treated with a primer composition to be dried and dried to form colored flakes of acrylic polymer, colorant, titanium dioxide, and 2-butoxyethanol (2-E). Styreneglycol monobutyl ether), silicone dioxide, plasticizer-type solvent, emulsifier, water-based intermediate paint composition composed of water and dried, and then transparent acrylic polymer, polypropylene pyrylene, amorphous silica, diethylene glycol n-nuclear The present invention relates to a concrete surface treatment method using a multi-color coating which is coated with an aqueous coating for top coating composed of ether, 1-methyl-2-phyllolidon and water.

The concrete surface coated with the concrete surface treatment method of the present invention is a multi-colored emulsion and a multi-colored emulsion by the emulsification and color emulsion finely dispersed in the water phase of the intermediate water-based paint composition (water phase) The coating of the color water-based paint forms a pattern of natural stone texture, which is absorbed and soluble by the colored synthetic resin premicron fragments, pigments, liquid solvents, plasticizers and emulsifiers except titanium dioxide and silica as a composition. Depending on the difference in the color tone of the flakes, drops and colored emulsions, the spray coating process can form a pattern of natural stone by bursting the flakes and microdroplets on the base color when spraying, thus maximizing the decorative effect. In addition, the peeling phenomenon between layers due to the excellent adhesion between the surface and the coating layer, coating layer and coating layer Titanium dioxide, which can prevent cracking of the coating film and decompose organic matter, has air purification and water purification functions by dispersing it in the coating layer, and in particular, it has excellent pollution resistance and continuously maintains the natural texture of multi-colored decorative effect. It can be called a concrete surface treatment method that can be expected.

In general, the concrete structure is formed by the formwork or mold, the surface is rough and not beautiful, and also deteriorated by external conditions, the life is shortened. More specifically, the surface of the structure may be damaged or degraded by environmental factors such as temperature change, extreme temperature difference due to seasonal change, freezing thawing, atmospheric humidity, acid alkali chemicals and gas.

As such, prior arts have been introduced to enhance the decorative effect of cement structures and maintain the performance of concrete structures, as well as to perform surface treatment for various purposes in order to supplement or reinforce functions not present in the painted cement structures.

In Korea Patent Publication (Registration No. 906653), "surface treatment method of concrete water tank" is introduced, and the contents of the technology are related to the surface treatment method of concrete water tank. And applying an adhesive material made of a polymer additive to squeeze the tile with metallic glaze on it and forming a joint between the tiles and the tile to fill the adhesive material made of mortar and polymer additive. Can be. This is a surface treatment method of tiles to reinforce the decoration of the exterior and water resistance or waterproofing at the technical level of adhesive bonding the concrete surface of industrial or household water tank or bathroom, swimming pool, etc.

As another conventional technology, Korean Patent Publication (Publication No. 10-2004-14718) discloses a technology related to an inorganic surface treatment material composition for concrete surface protection. The contents of the technology are 30 to 40% by weight cement, 20 to 30% by weight blast furnace slag, 3 to 7% by weight silica fume, 10 to 15% by weight styrene-butadiene rubber polymer, 10 to 15% by weight of silica sand, 10 to 20% by weight admixture The present invention relates to an inorganic surface treatment material composition. The surface treatment material composition for protecting the concrete surface is a conventional polymer cement concrete composition containing SBR polymer, which is widely used as a polymer cement, in a conventional hydrocuring reaction material such as cement, blast furnace slag, silica fume, and silica sand as a conventional concrete composition. When the concrete structure is formed by adding silica fume to the concrete, the strength can be expected to be improved.However, when coating with a thin film having the same level of coating layer as the surface treatment agent of a conventional concrete structure, the composition of the concrete structure and the composition difference between the surface treatment agent and curing As a surface treatment agent having a protective function due to problems caused by curing due to absorption of moisture from the base concrete structure, it can be said that the surface treatment material composition is hardly expected to be effective.

"Permeable waterproofing method for suppressing deterioration of concrete structure" introduced in Korean registered patent publication No. 542423; Surface for preventing neutralization of concrete structure introduced in Korean registered patent publication No. 565268 Method of manufacturing the protective agent and the neutralization prevention method of new and repaired buildings using the same, and "Silicone resin emulsion coating agent having a water-infiltrating and waterproofing property and its manufacturing method" shown in Korean Patent Publication (Registration No. 661210). As shown, the silicone-based permeable water repellent may be referred to as a method of penetrating into a concrete structure or stone surface structure.

However, the surface treatment method using the silicone-based water repellent is excellent in water repellency and permeability to the stone surface or structure, which effectively prevents the penetration of water and chloride ions from the outside. However, since the film formed by the silicone-based water-repellent agent has a poor airtightness in the form of a membrane, the resistance to neutralization of the concrete structure cannot be greatly expected.Since the silicone-based water-repellent agent is volatile and deteriorated by ultraviolet rays, Excellent water repellency, but the effect is greatly reduced over time, so durability is greatly reduced.

The present invention is to treat the concrete surface with a liquid multi-colored water-based paint, and the coating layer of the natural stone texture by the multi-color according to the color difference of the color of the flake-shaped acrylic resin and the emulsion, the color difference of each of the emulsion or other color difference In addition to improving the decorative effect and to ensure the durability to maintain it continuously, in addition to air and water purification function, peeling and cracking resistance of the coating film, waterproof and pollution resistance excellent in multi-color water-based paint The purpose is to provide a concrete surface treatment method.

Treated concrete surface with high pressure air and coated with undercoat composition composed of primer and silane capping agent, dried and colored flake acryl resin, colorant, titanium dioxide, 2-butoxyethanol, microsilica, plasticizer, emulsifier, water After coating and drying with the intermediate color paint, it is made of acrylic resin, urethane resin, polypuroprene glycol, amorphous precipitated silica, diethylene glycol n-nuclear ether, 1-methyl-2-pyrrolidone and water-based coating. The object of the present invention was achieved by providing a concrete surface treatment method using a non-mixable, multi-colored water-based paint coating.

The concrete surface treated by the concrete surface treatment method by the multi-colored paint of the present invention can not only feel the taste of natural stone pattern texture superior in decorative effect than the surface of the concrete structure coated with the conventional single color paint, but also the natural stone pattern and color for a long time. The concrete coating layer is a concrete surface layer made of a multi-colored paint that has been given excellent air and water purification, waterproofing, peeling resistance, cracking resistance, and stain resistance.

1 is an embodiment in which the multi-colored paint according to the invention applied to the concrete surface.

The present invention relates to a concrete surface treatment method using a multi-colored paint, which will be described in detail according to the process, a one-step process of pretreating the surface of the concrete surface with high pressure air of 150 to 200 kg f / ㎠,

Two-step process to undercoat concrete surface with undercoat composition composed of 95 ~ 97 wt% primer and 3 ~ 5 wt% silane capping agent,

15.4% by weight of colored acrylic resin, 0.6% by weight of colorant, 4.5% by weight of titanium dioxide, 3.8% by weight of 2-butoxyethanol (ethylene glycol bone monobutyl ether), 4% by weight of microsilica, plasticizer A three-step process of coating 68% by weight of water to the first stirred mixture by mixing 2.0% by weight of a solvent and 1.7% by weight of an emulsifier, and coating the intermediate non-mixable aqueous paint obtained by the second stirring on the undercoating layer;

22% by weight of transparent acrylic resin, 7.4% by weight of transparent urethane resin, 3.5% by weight of polyfuropyrene glycol, 3% by weight of amorphous precipitated silica, 2.5% by weight of diethylene glycol n-hexyl ether, 1-methyl- A non-hybrid aqueous coating material, which is obtained by mixing 1.6 wt% of 2-pyrrolidone (1-methyl-2-pyrrolidon) and dispersing the first stirred mixture in 60 wt% of water, is coated on a middle layer to obtain a temperature of 70 ° F. It was possible to achieve the object of the present invention by providing a concrete surface treatment method by a multi-color paint to be dried for 2-3 hours by maintaining a humidity of 50%.

In the present invention, the use of a primer in the undercoat composition can improve the paintability by filling the gaps with numerous uneven irregularities of the surface of the concrete structure, thereby improving the surface smoothness, and also improving the waterproofing and chemical resistance, and the silane capping agent (silancouplingagent) Has strong adhesion between the concrete surface layer and the undercoating layer, and also has strong adhesion with the intermediate layer, so that peeling does not occur between layers. Here, the silane capping agent has an amino group, an epoxy group, and a double bond functional group, so that the organic material (synthetic resin) and the inorganic material (glass, sand, and metal) can be strongly bound, and the strength of the resin itself even when added to the resin itself. Is improved.

The intermediate coating composition is colored acrylic polymer, which is a small piece on the flecks, and is used as a vehicle for the intermediate coating. This resin is an amorphous polymer material, but it has a relatively polar group of acrylic ester, so it has high adhesiveness and viscosity. It is a synthetic resin that has properties and gives optically beautiful senses and is easy to dye and color by colors such as dyes and pigments. Because it contains polar atomic groups, cracks occur because of excellent tensile strength and impact strength of coating film. It is a resin that is widely used as a latex paint in that it does not cause whitening crazing phenomenon.

In addition, 2-butoxyethanol (ethylene glycol monobutyl ether) is a colorless liquid, a solvent having a high dilution ratio of 0.9019 as a colorless liquid, soluble in water and alcohol.

Here, acrylic resin is dissolved and it is a fast drying solvent. The solution has a function of improving mutual solubility and improving emulsification. In addition, as a plasticizer, a plasticizer of trioctyl trimellitate or pillow size is used, and impact resistance and crack resistance are imparted to the coating film along with acrylic resin. In addition, the anatase type titanium dioxide has an organic decomposition function under irradiation of ultraviolet rays and thus has air and water purification and pollution prevention functions, and microsilica is present in the coating layer and thus has wear resistance.

The intermediate paint composition composed of the above composition is sprayed with a multicolor aqueous paint composed of a colloidal color resin flake microflakes dispersed in a water phase, fine droplets by emulsification, and a colored emulsion. It forms a pattern of natural stone texture, which is a composition of color by interaction of lightly colored colloidal acrylic resin fleck, pigment, liquid solvent, plasticizer, and emulsifier except titanium dioxide and silica. According to the difference in absorption and solubility, the basic ground color of the middle layer is applied on the lower layer according to the color of the flakes, droplets, and colored emulsions or the color difference of the color. .

The colored acrylic resin flakes are dissolved in liquid solvents and plasticizer-type solvents, but are dispersed in an aqueous phase as a colloidal flake with a small composition ratio of solvents, and microdroplets by emulsification in an immiscible aqueous phase of an aqueous paint. It is also included to rupture when spraying to form a pattern, the difference in color can be obtained by the difference in the shade of the same color, the colored flakes and the colored emulsion may be different colors.

Top coating is a top coating composition to protect the natural stone color coating of the middle layer.As a coating composition of the top layer, a transparent acrylic polymer and a polymer urethane polymer are used, and the surface hardness of the coating layer is increased and the wear resistance is excellent. It is possible by mixing polyurethane resin with acrylic resin to improve weather resistance. PP glycol is an emulsifier to improve miscibility between compositions and diethylene glycol n-nucleoethyl ether is a liquid solvent. Soluble and soluble in water and alcohol.

Methyl-2-phyllolidon is an organic solvent, which itself is insoluble in water and serves as a dispersion of pigments. In addition, amorphous precipitated silica imparts abrasion resistance to the coating composition layer for top coat.

The surface layer of the concrete structure coated with the paint composition of each of the above, the present invention, the middle, and the top coat is formed of natural stone texture by the multi-color paint, so that the texture of the natural stone texture is superior to the surface layer of the concrete structure coated with the conventional single color. It is possible to preserve these patterns and colors in the long term and to effectively design the composition of each of the top, middle, and top layers, so that the coating layer on the concrete surface has excellent air and water purification, waterproofing, peeling resistance and crack resistance. It can be said that the concrete surface treatment method by the multi-color paint that is given at the same time and the stain resistance, the multi-color paint composition of the present invention is a lightweight concrete block, stucco brick, terracotta, artificial stone, dry wall, fiber board, wood, plastic, Laminate and concrete warehouse floor, basement floor, cones On the surface of the discrete structure it can be referred to as coating composition which can be widely used.

Patent In the present invention, care should be taken in the process of forming and storing the multi-color paint for the intermediate surface used in the concrete surface treatment method, since it should be protected from freezing because it is an aqueous paint. To do this, you need to use a paddle to stir gently, and mechanical mixing is prohibited. If the mixture is vigorously stirred, the color thin surface is broken and the color is homogenized, so that the pattern and shape of the natural stone texture cannot be obtained. In addition, storage should not exceed 100 ° F.

In order to clarify the technical configuration of the present invention and to examine the effects, specimens were prepared through the examples.

Cement concrete 30cm × 30cm × 5cm is made of several cement concretes, and the whole surface is pretreated, coated with a primer paint with a weight ratio of 95: 5 of primer and silane capping agent, dried, and then colored. 15.4 parts by weight of acryl resin, 0.6 parts by weight of colorant, 4.5 parts by weight of titanium dioxide, 3.8 parts by weight of 2-butoxyethanol, 4 parts by weight of microsilica, 2.0 parts by weight of plasticizer, and 1.7 parts by weight of emulsifier Add the mixed mixture by stirring to 68 parts by weight of water 22 parts by weight of clear acrylic resin and 7.4 parts by weight of transparent urethane resin on the intermediate layer which was coated with the intermediate non-mixable aqueous paint prepared by secondary stirring on the undercoat layer. Disperse the primary stirred mixture containing 3.5 parts by weight of PP glycol, 3 parts by weight of amorphous precipitated silica, 2.5 parts by weight of diethylene glycol n-nucleoether, and 1.6 parts by weight of 1-methyl-2-phyllolidon in 60 parts by weight of water. Top coat Non mixed water temperature by coating a Chengdu 70 ℉, maintained at a humidity of 50% was dried for 2 ~ 3 hours to prepare a specimen. The overall coating thickness was coated with 0.6 mm.

The specimen prepared in the above embodiment, as shown in Fig. 1, the texture of natural stone pattern was manifested, and in order to examine the water pollution indicator, 15 L of contaminated water was filled in a container of a certain size and 5 specimens were immersed in 20 ± 1 ° C. As a result of observing the water pollution indicators of chemical oxygen demand (COD), total nitrogen (TN), and total phosphorus (TP) while leaving at temperature for 30 days, the water pollution indicators as shown in Table (1) were examined. I could get a change.

Changes in Indicators of Water Pollution in Specimen. Item ＼ Changes in Water Pollution Indicators with Time Initial concentration 10 days 20 days 30 days COD (mg / L) 146 71.6 64.5 57.4 T-N (mg / L) 13.8 9.5 8.9 8.6 T-P (mg / l) 3.1 0.52 0.42 0.282

In addition, the degradation rate of acetaldehyde was evaluated by irradiating with ultraviolet rays for 20 hours based on the gas bag B method proposed by the Korea Catalysts Association to evaluate the atmospheric purification performance. This method is to evaluate the contaminant decomposition performance of photocatalyst. The test method is to put 5 specimens into a 10L gas bag, inject 6L of acetaldehyde / air mixture gas, and then mix in the dark room for 5 hours or more. The concentration of acetaldehyde between the gases is balanced, and then the concentration of acetaldehyde is observed for 20 hours while irradiating UV light having a wavelength of 10 ㎽ / ㎠ and UV-A for 20 hours to evaluate the performance of the photocatalyst. As a result, acetaldehyde decomposition efficiency as shown in Table 2 was obtained.

Acetaldehyde Decomposition Efficiency by Gas Bag B Method of Specimen. Item ＼ Decomposition Efficiency Over Time Removal rate Initial concentration After 2 hours After 10 hours After 20 hours Acetaldehyde 130
(ppm) 73.7 114.8 128.2 98.62

In addition, through various experiments on the coating film, the physical properties shown in Table 3 were obtained.

Physical property table of the surface treatment coating film of this invention. Item ＼ result Coating flexibility There is no crack in the coating in 1/8 "Medrel (ASTMD-1734). Coating Hardness HB-H pencil hardness (ASTMD-3363) Self-prepping
(self lifting) Excellent adhesion stone between coatings (FEDSTD-141B method 6252) Pollution resistance No pollution from weak acids, chemicals, oils or foods (ASTMD-1308) Wear resistance Taber wear 53.9 mg, loss 100 cycles, CS-10 wheel 1000 g, weight (ASTMD-4060) Scrub resistant 2,350 cycles (ASTMD-3273) Mildew Resistance No lunch (ASTMD-3273) Bacteria resistant No lunch (ASTMD-3456)

Claims (3)

1 step process to pretreat the surface with high pressure air of 150 ~ 200kg f / ㎠
Two-step process of undercoating the surface of concrete pretreated with undercoat composition composed of 95 ~ 97 wt% primer and 3 ~ 5 wt% silane capping agent,
3-stage process of coating with non-mixing multi-color aqueous paint on the undercoat
60% by weight of water, 22% by weight of acrylic polymer, 7.4% by weight of urethane polymer, 3.5% by weight of polypropylene pyrolycol, 3% by weight of amorphous precipitated silica, 2.5% by weight of diethylene glycol n-hexyl ether on the completely dried intermediate paint composition coating layer %, 1-methyl-2-pyrrolidone A multi-color concrete surface treatment method by coating and drying with an aqueous coating composition for coating composition composed of 1.6% by weight.
The non-mixable multicolor water-based paint of claim 1, wherein the non-mixable multicolor aqueous paint is 15.4% by weight of colored acrylic resin, 0.6% by weight of colorant, 4.5% by weight of anatase type titanium dioxide, and 3.8% by weight of 2-butoxyethanol. , 4% by weight of microsilica, 2.0% by weight of plasticizer, 1.7% by weight of emulsifier, and 68% by weight of water. Treatment method.
The method according to claim 2,
The plasticizer formulation is a multi-color concrete surface treatment method characterized in that the plasticizer selected from trioctyl trimellitate, pillow size.

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