KR102056127B1 - Eco-friendly functional surface protecting composition and method for protecting surface of concrete or metal structure therewith - Google Patents

Abstract

The present invention relates to an eco-friendly functionally improved surface protective agent composition and a method for surface protecting and finishing construction of a concrete or steel structure by using the same, wherein the composition has an excellent heat shielding function, is excellent in constructability, wear resistance, contamination resistance, chemical resistance, deodorizing properties, incombustibility, UV resistance, salt resistance, neutralization resistance, and durability such as freezing and thawing resistance or the like, and is quickly dried to reduce construction and maintenance costs and enable performance period of the structure to be extended by shortening construction period. The eco-friendly functionally improved surface protective agent composition according to the present invention comprises a function improving admixture and a function improving filler, wherein the function improving admixture comprises 20 to 95 wt% of an ethylene-methyl(meth)acrylate-butylacrylate copolymer, 1 to 35 wt% of a 2-hydroxyethylacrylate-methyl(meth)acrylate copolymer, 0.1 to 25 wt% of dimethylaminoethyl acrylate, 0.01 to 15 wt% of dihydrodicyclopentadienyl acrylate, and 0.01 to 15 wt% of a graphene dispersion based on the weight of the function improving admixture; and the function improving filler comprises 15 to 95 wt% of barium sulfate, 1 to 35 wt% of mullite, 0.1 to 25 wt% of diatomite, 0.1 to 15 wt% of magnesium carbonate, 0.1 to 15 wt% of potassium aluminum sulfate, 0.1 to 15 wt% of glyceryl stearate, and 0.1 to 15 wt% of pigment based on the weight of the function improving filler.

Description

ECO-FRIENDLY FUNCTIONAL SURFACE PROTECTING COMPOSITION AND METHOD FOR PROTECTING SURFACE OF CONCRETE OR METAL STRUCTURE THEREWITH}

The present invention relates to an environment-friendly functional improvement surface protective agent composition having excellent heat shielding function and durability, and a method for surface protection and finishing of concrete or steel structures using the same.

In general coating methods for surface protection and finishing of concrete or steel structures, surface protection agents made of organic components such as epoxy, urethane and acrylic resins are mainly used. In the case of conventional surface protection agents made of organic components, they have good processability and adhesion. It has the advantage of excellent performance and flexibility.

However, in the manufacture and use of conventional organic binder surface protectant, there was a problem of emitting various pollutants and harmful substances such as heavy metals and volatile organic compounds. In addition, after curing, it is easily degraded by various environmental factors such as acid rain, nitrogen oxides caused by automobile exhaust gas, sulfur oxides, carbon dioxide and chlorine ions in the marine environment, yellowing phenomenon caused by ozone or ultraviolet rays, and cracking by moisture. However, due to the swelling phenomenon, the service life was dropped quickly and it was difficult to secure durability. In addition, as heat resistance is low, and as the degree of air pollution becomes severe, organic materials such as oil are mixed to easily contaminate the structure, thereby increasing the maintenance cost.

On the other hand, due to the rapid industrialization, the area of the green area is reduced, and the structure and population are concentrated in the downtown area, so the circulation of natural solar heat cannot be smoothly achieved due to the increase of artificial heat by heating, heating, and heating. : The temperature is higher than the surrounding area due to air pollution or artificial heat. Accordingly, while the government is saving energy by solar heat shielding, efforts are being made to reduce pollutants such as carbon dioxide.

As part of this effort, the Republic of Korea Patent No. 10-1291894 used heat shield pigment and hollow bead, to improve the heat shield of the material, but the content of the expensive pigment is relatively high, the difficulty of viscosity control and adhesive performance There was a problem of this deterioration. In addition, the Republic of Korea Patent No. 10-1434501 In order to improve the thermal insulation of the material by using a heat shielding material and a hollow bead surface treated with a silane coupling agent, by coating the top coat and the bottom coat layer separately, High and the application process was complicated. In addition, although the Republic of Korea Patent No. 10-1618528 attempted to improve the thermal insulation of the material by using a macroporous material loaded with a phase conversion material, problems such as poor adhesion performance and weather resistance still remained.

Therefore, to protect the surface of concrete or steel structures that are environmentally friendly and have excellent thermal insulation, various aesthetic appearances, as well as improved functionality such as durability, pollution resistance, weather resistance, etc. to cope with volatile organic compound regulations with the global environmental protection trend today. ㆍ The development of surface protective agents for finishing is required.

Republic of Korea Patent Registration No. 10-1710126 Republic of Korea Patent Registration No. 10-1717128 Republic of Korea Patent No. 10-1291894 Republic of Korea Patent No. 10-1434501 Republic of Korea Patent No. 10-1618528

The present invention has been made to overcome the above-mentioned problems, has excellent heat shielding function, durability, such as workability, abrasion resistance, pollution resistance, chemical resistance, deodorization, non-flammability, UV resistance, salt resistance, neutralization resistance, freeze thawing resistance, etc. It provides excellent and fast drying property, which reduces construction time and maintenance cost, and extends the common period of structure, and provides environment-friendly functional surface protection agent composition and surface protection and finishing method of concrete or steel structure using the same. I would like to.

One embodiment of the present invention comprises 25 to 95% by weight of the functional improvement admixture and 5 to 75% by weight of the functional filler; The functional improvement admixture is 20 to 95% by weight of ethylene-methyl (meth) acrylate-butyl acrylate copolymer, 1 to 35 weight of 2-hydroxyethyl acrylate-methyl (meth) acrylate copolymer %, 0.1-25 wt% dimethylaminoethylacrylate, 0.01-15 wt% dihydrodicyclopentadienyl acrylate and 0.01-15 wt% graphene dispersion; The functional filler is 15 to 95% by weight of barium sulfate, 1 to 35% by weight of mullite, 0.1 to 25% by weight of diatomaceous earth, 0.1 to 15% by weight of magnesium carbonate, 0.1 to 15% by weight of potassium aluminum sulfate, It provides an environmentally friendly functional surface protector composition comprising 0.1 to 15% by weight of glyceryl stearate and 0.1 to 15% by weight of pigment.

The functional improvement admixture is 0.01 to 10% by weight of hexamethyldisilazane relative to the functional improvement admixture, N-phenyl-N'-isopropyl-p-phenylenediamine (N-phenyl-n'-isopropyl-p-phenylene diamine ) 0.01 to 10% by weight, cyclopentasiloxane further comprises 0.01 to 10% by weight, and an antifoaming agent 0.01 to 10% by weight; The functional filler may further include 0.01 to 10 wt% of titanium dioxide based on the functional filler.

In addition, the functional improvement admixture further comprises 0.01 to 5% by weight of tetrabutylammonium hyaluronic acid and 0.01 to 5% by weight of N-methylethanesulfonamide relative to the weight of the functional improvement admixture; The functional filler may further include 0.01 to 5 wt% of barium calcium titanate (BaCaTiO ₃ ) and 0.01 to 5 wt% of sodium persulfate based on the weight of the functional filler.

Another embodiment of the present invention is a surface protection and finish construction method of the concrete or steel structure using the environmentally friendly functional surface protection agent composition according to an embodiment of the present invention, to remove impurities or deterioration of the concrete or steel structure Cleaning; Arranging the base surface using a fast hard putty material on the cleaned area; Forming a primer layer by applying a surface reinforcing agent to the clean substrate surface; Applying the eco-friendly functional improvement surface protector composition to the formed primer layer; And it provides a surface protection and finishing construction method of the concrete or steel structure comprising the step of curing.

The quick-setting putty material is one containing at least one selected from epoxy putty, urethane putty and cemented carbide cement putty; The surface strengthening agent may include one or more materials selected from styrene-butadiene latex, ethylene vinyl acetate, polyacrylic ester, acryl, methyl methacrylate and the functional improvement admixture.

Environment-friendly functional improvement surface protection agent composition according to an embodiment of the present invention has excellent heat shielding function, construction, wear resistance, pollution resistance, chemical resistance, deodorization, non-flammable, UV resistance, salt resistance, neutralization resistance, freeze thaw resistance, etc. Durable effect is excellent. In addition, the construction period is shortened due to quick drying, thereby reducing the construction cost and maintenance cost and extending the common period of the structure. In addition, there is no elution of harmful heavy metals, which is safe for the human body, and does not use organic solvents such as volatile organic compounds, thereby having an environmentally friendly effect.

In addition, according to the surface protection and finish construction method of concrete or steel structure using the environment-friendly functional improvement surface protection agent composition according to an embodiment of the present invention, by showing excellent strength characteristics and durability of fast drying, shortening the construction period, In addition to increasing the service life of the structure, there is an effect that can reduce the cost of maintenance. Moreover, it is possible to apply also to a wet adherend, and there exists an effect which shows the outstanding adhesive force. Thus, unlike the conventional surface protection agent made of an organic component, by dramatically shortening the drying step, the construction period can be shortened, there is an effect that can reduce the construction cost.

Hereinafter, preferred embodiments of the present invention will be described in detail. However, the following embodiments are provided to those skilled in the art to fully understand the present invention, and may be modified in various forms, and the scope of the present invention is limited to the embodiments described below. It is not.

Hereinafter, the structure refers to a concrete structure or steel structure, and more specifically, not only concrete structure, steel structure, but also building structures such as houses, apartments, parking lots, facility structures through which roads and highways as well as vehicles ( It is used to mean all structures including hydraulic structures such as central dividing wall, wing wall, sidewall concrete, molten wall concrete), agricultural waterway, waterway bridge, underground and exponential structures, chemical facilities, and marine structures.

One embodiment of the present invention comprises 25 to 95% by weight of the functional improvement admixture and 5 to 75% by weight of the functional filler; The functional improvement admixture is 20 to 95% by weight of ethylene-methyl (meth) acrylate-butyl acrylate copolymer, 1 to 35 weight of 2-hydroxyethyl acrylate-methyl (meth) acrylate copolymer %, 0.1-25 wt% dimethylaminoethylacrylate, 0.01-15 wt% dihydrodicyclopentadienyl acrylate and 0.01-15 wt% graphene dispersion; The functional filler is 15 to 95% by weight of barium sulfate, 1 to 35% by weight of mullite, 0.1 to 25% by weight of diatomaceous earth, 0.1 to 15% by weight of magnesium carbonate, 0.1 to 15% by weight of potassium aluminum sulfate, It provides an environmentally friendly functional surface protector composition comprising 0.1 to 15% by weight of glyceryl stearate and 0.1 to 15% by weight of pigment.

Eco-friendly functional surface protection agent composition according to an embodiment of the present invention comprises 25 to 95% by weight of functional improvement admixtures and 5 to 75% by weight of functional fillers.

The functional improvement admixture serves to improve bending, tensile and adhesion strength, improve workability and durability, and have high fluidity (self-leveling), which is contained in an amount of 25 to 95% by weight with respect to the environment-friendly functional improvement surface protective agent composition. Preferably; The functional improvement filler is preferably contained 5 to 75% by weight based on the environment-friendly functional improvement surface protective agent composition.

More specifically, the functional improvement admixture improves warpage, tensile and adhesion strength, and improves workability, wear resistance, fouling resistance, chemical resistance, deodorization, heat shielding, nonflammability, UV resistance, salt resistance, neutralization resistance, freeze thaw resistance, and the like. It plays a role in making durability of.

The functional improvement admixture is 20 to 95% by weight of ethylene-methyl (meth) acrylate-butyl acrylate copolymer, 1 to 35 weight of 2-hydroxyethyl acrylate-methyl (meth) acrylate copolymer %, 0.1 to 25% by weight of dimethylaminoethylacrylate, 0.01 to 15% by weight of dihydrodicyclopentadienyl acrylate and 0.01 to 15% by weight of graphene dispersion may be used.

The functional improvement admixture is 0.01 to 10% by weight of hexamethyldisilazane, N-phenyl-N 'to the functional improvement admixture in order to further improve the durability and workability, such as strength, heat resistance, impact resistance, wear resistance, aging resistance, etc. 0.01 to 10% by weight of N-phenyl-n'-isopropyl-p-phenylene diamine, 0.01 to 10% by weight of cyclopentasiloxane, and 0.01 to 10% by weight of an antifoaming agent. Can be.

In addition, the functional improvement admixture may further include 0.01 to 5% by weight of tetrabutylammonium hyaluronic acid and 0.01 to 5% by weight of N-methylethanesulfonamide in order to further improve the above effects.

The ethylene-methyl (meth) acrylate-butylacrylate copolymer is mixed with other components of the functional improvement admixture and used to improve strength, hydrophilicity and durability. The ethylene-methyl (meth) acrylate-butyl acrylate copolymer is preferably contained 20 to 95% by weight based on the weight of the functional improvement admixture. If the content of the ethylene-methyl (meth) acrylate-butyl acrylate copolymer is too high than the above content range, the above performance is improved, but the problem of material separation may occur, too less than the above content range In this case, the above-described performance improvement effect may be insufficient.

The 2-hydroxyethylacrylate-methyl (meth) acrylate copolymer is mixed with other components of the functional admixture to increase flexibility, improve warpage and tensile strength, and significantly improve adhesion strength and durability. use. The 2-hydroxyethyl acrylate-methyl (meth) acrylate copolymer is preferably contained 1 to 35% by weight based on the weight of the functional improvement admixture. If the content of the 2-hydroxyethyl acrylate-methyl (meth) acrylate copolymer is too large than the above-mentioned content range, the above performance may be improved, but the price competitiveness may be lowered, and the content of the 2-hydroxyethyl acrylate-methyl (meth) acrylate copolymer may be too much. If less, the above-mentioned performance improvement effect may be insufficient.

The dimethylaminoethyl acrylate is mixed with other components of the functional improvement admixture, and used to improve durability such as adhesive strength, ozone resistance, wear resistance, oil resistance, heat resistance, and the like. The dimethylaminoethyl acrylate is preferably contained 0.1 to 25% by weight based on the weight of the functional improvement admixture. If the content of the dimethylaminoethyl acrylate is too much than the above content range, the above performance is improved, but workability may be lowered, or the price competitiveness may be lowered, and if the content is too less than the above content range, One performance improvement may be negligible.

The dihydro dicyclo pentadienyl acrylate is mixed with other components of the functional admixture to improve reactivity, thereby improving strength, warpage toughness and durability and imparting hydrophilicity. do. The dihydrodicyclopentadienyl acrylate is preferably contained 0.01 to 15% by weight based on the weight of the functional improvement admixture. When the content of the dihydrodicyclopentadienyl acrylate is too high than the above content range, it is difficult to expect a further performance improvement effect, the reactivity is high, there may occur a problem that the workability is lowered, than the above content range If less, the above-mentioned performance improvement effect may be insufficient.

The graphene dispersion is mixed with other components of the functional improvement admixture and used to improve flexural strength, tensile strength, electrical resistance, thermal conductivity, abrasion resistance, corrosion resistance, ultraviolet resistance and durability. This graphene dispersion is a material having an atomic size honeycomb structure made of carbon atoms, the thickness is 0.1 to 0.5 nm thin, high transparency, 100 times faster than copper, 100 times faster than silicon at room temperature, More than twice the thermal conductivity of diamond having excellent thermal conductivity. In addition, although the tensile strength is more than 200 times stronger than steel, the elasticity is good, and it has a property of not losing electrical conductivity even when it is increased or folded.

This graphene dispersion is a graphene powder having a specific surface area of 1,000 to 1,500 m ² / g

Dispersed in an aqueous acid solution, the pH is adjusted to 5.0 or less, followed by heating and cooling to room temperature; And by adding a basic pH adjuster to the cooled dispersion, it is prepared by a manufacturing method comprising the step of adjusting the pH of the dispersion to 8.0 it can be further improved by the above-described features. More specifically, in a 10 L reactor equipped with a cooling water jacket, 40 ml of citric acid (citric acid (concentration; 1 mg / ml)) in an aqueous solution of nano-graphene in a Teflon-lined autoclave and pH adjusted to 5.0 or less, 200 ℃ After stirring for 2 to 5 hours, and then cooled to room temperature it can be prepared by adjusting the pH to 8.0 using sodium hydroxide (NaOH).

Such graphene dispersion is preferably contained 0.01 to 15% by weight based on the weight of the functional improvement admixture. If the content of the graphene dispersion is too much than the above content range, the viscosity is lowered may cause a problem of material separation phenomenon, if less than the above content range, the above performance improvement effect may be insufficient. .

The functional improvement admixture is 0.01 to 10% by weight of hexamethyldisilazane, N-phenyl-N 'to the functional improvement admixture in order to further improve the durability and workability, such as strength, heat resistance, impact resistance, wear resistance, aging resistance, etc. 0.01 to 10% by weight of N-phenyl-n'-isopropyl-p-phenylene diamine, 0.01 to 10% by weight of cyclopentasiloxane, and 0.01 to 10% by weight of an antifoaming agent. Can be.

The hexamethyldisilazane is mixed with other components of the functional improvement admixture and used to further improve strength and durability. The hexamethyldisilazane is preferably contained in an amount of 0.01 to 10% by weight based on the weight of the functional improvement admixture. If the content of the hexamethyldisilazane is more than the above content range, the above performance may be improved, but the price competitiveness may be lowered. If the content of the hexamethyldisilazane is too low, the above performance improvement effect is insufficient. Can be done.

The N-phenyl-N'-isopropyl-p-phenylenediamine (N-phenyl-n'-isopropyl-p-phenylene diamine) is mixed with the other components of the functional improvement admixture, strength, heat resistance, It is used to further improve durability such as impact resistance, abrasion resistance, and aging resistance. The N-phenyl-N'-isopropyl-p-phenylenediamine is preferably contained in an amount of 0.01 to 10% by weight based on the weight of the functional improvement admixture. If the content of the N-phenyl-N'-isopropyl-p-phenylenediamine is too large than the above content range, the above performance may be improved, but a problem may occur in that viscosity increases and workability is deteriorated. If it is less than the content range, the above-mentioned performance improvement effect may be insufficient.

The cyclopentasiloxane is mixed with other components of the functional admixture to form on the surface of brush marks, roller marks, orange peel, cratering, pin holes, stains, and the like. Used to prevent defects. The cyclopentasiloxane is preferably contained in an additional 0.01 to 10% by weight based on the weight of the functional improvement admixture. If the content of the cyclopentasiloxane is too much than the above content range, the above performance is improved, but the strength and workability may be reduced, and if less than the above content range, the above performance improvement effect is It may be insufficient.

The antifoam is mixed with other components of the functional admixture and used to reduce bubbles to improve strength and durability. The antifoaming agent may be an alcoholic antifoaming agent, a silicone antifoaming agent, a fatty acid antifoaming agent, an oil antifoaming agent, an ester antifoaming agent, an oxyalkylene antifoaming agent, or the like. Dimethyl silicone oil, polyorganosiloxane, fluorosilicone oil and the like may be used as the silicone antifoaming agent. As the fatty acid-based antifoaming agent, stearic acid, oleic acid or the like can be used. As the oil-based antifoaming agent, kerosene, animal or vegetable oil, castor oil, or the like can be used. The ester antifoaming agent may be used, such as solitol trioleate, glycerol monoricinoleate. As said oxyalkylene antifoamer, polyoxyalkylene, acetylene ether, polyoxyalkylene fatty acid ester, polyoxyalkylene alkylamine, etc. can be used. As the alcohol-based antifoaming agent, glycol or the like may be used. The antifoaming agent is preferably contained in an additional 0.01 to 10% by weight based on the weight of the functional improvement admixture. If the amount of the antifoaming agent is too much than the above content range, the above performance may be improved, but the strength and durability may be reduced. If the content of the antifoaming agent is too low, the above performance improvement effect may be insufficient. Can be.

In addition, the functional improvement admixture may further include 0.01 to 5% by weight of tetrabutylammonium hyaluronic acid and 0.01 to 5% by weight of N-methylethanesulfonamide in order to further improve the above effects.

The hyaluronic acid tetrabutylammonium is mixed with other components of the functional improvement admixture to facilitate viscosity control and to further improve adhesive strength. In addition, there is an effect that can greatly improve the chemical resistance. It is preferable that the hyaluronic acid tetrabutylammonium is contained in an amount of 0.01 to 5% by weight based on the weight of the functional improvement admixture. If the content of the hyaluronic acid tetrabutylammonium is too much greater than the above content range, a problem of material separation may occur. If the content of the hyaluronic acid tetrabutylammonium is too low, the above performance improvement effect may be insufficient.

The N-methylethanesulfonamide is mixed with other components of the functional improvement admixture, and used to improve compatibility with other components and further improve easy workability and adhesion properties. The N-methylethanesulfamide is preferably contained in an amount of 0.01 to 5% by weight based on the weight of the functional improvement admixture. If the content of the N-methyl ethane sulfonamide is too large than the above-mentioned content range, there may occur a problem that the adhesive properties and workability is rather deteriorated, and if the content of the N-methyl ethane sulfonamide is too small, the above-mentioned performance improvement effect is insufficient. Can be.

In addition, the functional admixture may be mixed with other components of the functional admixture, and may further include a water reducing agent to further improve workability and fluidity. Such a water reducing agent is preferably contained 0.01 to 5% by weight based on the weight of the functional improvement admixture. If the content of the water reducing agent is too much than the above content range, a problem of material separation may occur. If the content of the water reducing agent is too less than the above content range, the above-described performance improvement effect may be insufficient.

In addition, the functional improvement filler has a heat shielding function, and serves to shorten the construction period by fast drying.

The functional filler is 15 to 95% by weight of barium sulfate, 1 to 35% by weight of mullite, 0.1 to 25% by weight of diatomaceous earth, 0.1 to 15% by weight of magnesium carbonate, 0.1 to 15% by weight of potassium aluminum sulfate, Those containing 0.1 to 15% by weight of glyceryl stearate and 0.1 to 15% by weight of pigment may be used.

The functional filler may further include 0.01 to 10 wt% of titanium dioxide based on the weight of the functional filler to improve the durability, such as strength, corrosion resistance, antifouling, antiseptic.

The functional filler may further include 0.01 to 5 wt% of barium calcium titanate (BaCaTiO ₃ ) and 0.01 to 5 wt% of sodium persulfate based on the weight of the functional filler to further improve the heat shielding performance and quick-drying function.

The barium sulfate is mixed with other components of the functional filler to be used to improve strength and durability. More specifically, the barium sulfate may be mixed with other components of the functional filler to further improve the durability of filling, impact resistance, thermal insulation, and fire resistance. The barium sulfate is preferably contained 15 to 95% by weight based on the weight of the functional improvement filler. If the content of the barium sulfate is too much than the above content range, the above performance may be improved but workability may be reduced. If the content of the barium sulfate is too low, the above performance improvement effect may be insufficient.

The mullite is mixed with other components of the functional filler to be used to improve strength, wear resistance, adsorption, fire resistance and durability. The mullite is preferably contained 1 to 35% by weight based on the weight of the functional improvement filler. If the content of the mullite is too much than the above content range, the above performance is improved but the workability may be lowered. If the content of the mullite is too less than the above content range, the above performance improvement effect may be insufficient.

The diatomaceous earth is a natural pozzolanic material is mixed with other components of the functional filler to improve long-term strength and improve self-healing performance, and is used to improve the durability, such as heat insulation, waterproof performance. In addition, the diatomaceous earth has a low density, high porosity, high surface area, thereby promoting the drying of the coating film, there is an effect that can further improve the antibacterial, deodorant. More specifically, the diatomaceous earth may be baked at a temperature of 800 to 1500 ℃, it is possible to further improve the above performance. The diatomaceous earth is preferably contained 0.1 to 25% by weight based on the weight of the functional improvement filler. If the content of the diatomaceous earth is too much than the above content range, the workability may be lowered, or the initial strength may be delayed, and if the content of the diatomaceous earth is too small, the above performance improvement effect may be insufficient.

The magnesium carbonate is mixed with other components of the functional filler to be used to improve heat insulation, toughness, wear resistance and durability. The magnesium carbonate is preferably contained 0.1 to 15% by weight based on the weight of the functional improvement filler. If the content of the magnesium carbonate is too much than the above content range, the performance may be improved but the price competitiveness is low, and if the content is too less than the above content range, the above performance improvement effect may be insufficient. .

The potassium aluminum sulfate has excellent performance of adsorbing moisture and forms a dense crystallization structure upon curing, and is mixed with other components of the functional filler to be used for improving material separation resistance, water resistance and durability. . The potassium aluminum sulfate is preferably contained 0.1 to 15% by weight based on the weight of the functional improvement filler. When the content of the potassium aluminum sulfate is too much than the above-described content range, the viscosity is high and the curing is faster, the workability may be lowered. If the content of the potassium aluminum sulfate is less than the above-mentioned content range, the dense internal tissue forming effect may be lowered.

The glyceryl stearate is mixed with other components of the functional filler to be used to improve UV resistance, fouling resistance and heat resistance. The glyceryl stearate is preferably contained 0.1 to 15% by weight based on the weight of the functional improvement filler. If the content of the glyceryl stearate is too much than the above content range, the above performance is improved, but the strength may be lowered and the price competitiveness may be lowered. If the content of the glyceryl stearate is too low, the above performance improvement effect is insufficient. Can be.

The pigment is mixed with other components of the functional filler to be used to create color and improve aesthetics. In addition, the pigment may be added to facilitate identification, it is easier to identify with a more vivid color and the durability of the color may be improved. The pigment may be used one or two or more materials selected from red iron oxide, yellow iron oxide, chromium oxide (CrO ₃ ), purple iron oxide and black iron oxide (carbon black), thereby red, green, yellow, black, blue Various colors such as white can be realized. The pigment is preferably contained 0.1 to 15% by weight based on the weight of the functional improvement filler. If the content of the pigment is too much than the above-mentioned content range, the above performance is improved but the strength may be reduced or the price competitiveness may be lowered. If the content of the pigment is less than the above-described content range, the above-mentioned performance improvement effect may be insufficient. .

In addition, the functional filler is mixed with other components of the functional filler to improve the durability, such as strength, corrosion resistance, antifouling, antiseptic, as well as water resistance, fouling resistance, heat insulation, antibacterial, corrosion resistance, function It may further comprise 0.01 to 10% by weight of titanium dioxide relative to the improved filler weight. If the content of the titanium dioxide is too much than the above content range, the above performance is improved but the price competitiveness may be lowered, if the content is too less than the above content range, the above performance improvement effect may be insufficient.

In addition, the functional filler is mixed with other components of the functional filler, in order to further improve the heat shielding performance and quick-drying, barium calcium titanate (BaCaTiO ₃ ) 0.01 to 5% by weight of the functional filler filler and Sodium persulfate may further comprise 0.01 to 5% by weight.

The barium calcium titanate may further improve the above effects by using an average particle diameter of 0.019 to 0.025 µm, a specific surface area of 30 to 100 m ² / g, and a (Ba + Ca) / Ti molar ratio of 0.994 to 1.004.

The barium calcium titanate and sodium persulfate may be mixed in a 1: 2 weight ratio to further improve the above effects.

If the content of the barium calcium titanate and sodium persulfate is too large than the above content range, the above-mentioned performance may be improved but the price competitiveness may be lowered. If the content of the barium titanate and sodium persulfate is too low, the above-mentioned performance improvement effect may be insufficient. Can be.

Environment-friendly functional improvement surface protection agent composition according to a preferred embodiment of the present invention by mixing 25 to 95% by weight of the functional improvement admixture and 5 to 75% by weight of the functional improvement filler in a forced mixer, continuous mixer or vacuum mixer for a predetermined time It can be prepared by stirring (for example, 2 to 10 minutes).

Hereinafter, the present invention provides a method for surface protection and finishing of concrete or steel structures using an environmentally friendly functional improvement surface protection agent composition according to an embodiment of the present invention.

Another embodiment of the present invention comprises the steps of removing and cleaning the impurities or deterioration of the concrete or steel structure; Arranging the base surface using a fast hard putty material on the cleaned area; Forming a primer layer by applying a surface reinforcing agent to the clean substrate surface; Applying the eco-friendly functional improvement surface protector composition to the formed primer layer; And it provides a surface protection and finishing construction method of the concrete or steel structure comprising the step of curing.

Removing and cleaning the impurity or deterioration site of the concrete or steel structure may remove the impurity or deterioration site of the structure with a grinder, planer, shot blaster, hand waterjet, high pressure sprayer, etc., and may be cleaned with a vacuum inhaler.

In the cleaning of the base surface by using the fast-dry putty material on the cleaned portion, the base surface may be cleaned by using the fast-hard putty material, such as cracks, grooves, pinholes, and the like. In this case, the quick-drying putty material may include one or more selected from epoxy putty, urethane putty, and cemented carbide cemented putty.

Forming a primer layer by applying a surface reinforcing agent on a clean substrate surface may be performed to improve the adhesion of the environmentally-friendly functional surface protection agent composition, to suppress the penetration of water and chlorine ions, and to improve the water resistance and water resistance. have. In this case, the surface strengthening agent may include one or more materials selected from styrene-butadiene latex, ethylene vinyl acetate, polyacrylic ester, acrylic, methyl methacrylate and the functional improvement admixture.

The step of applying the eco-friendly functional improvement surface protection agent composition to the formed primer layer may be applied using a brush, roller, airless, spraying equipment and the like.

In addition, after curing, the method may further include applying the functional improvement admixture in order to improve stain resistance, film strength, wear resistance, and the like.

Environment-friendly functional improvement surface protection agent composition according to an embodiment of the present invention has excellent heat shielding function, construction, wear resistance, pollution resistance, chemical resistance, deodorization, non-flammable, UV resistance, salt resistance, neutralization resistance, freeze thaw resistance, etc. Durable effect is excellent. In addition, the construction period is shortened due to quick drying, thereby reducing the construction cost and maintenance cost and extending the common period of the structure. In addition, there is no elution of harmful heavy metals, which is safe for the human body, and does not use organic solvents such as volatile organic compounds, thereby having an environmentally friendly effect.

In addition, according to the surface protection and finish construction method of concrete or steel structure using the environment-friendly functional improvement surface protection agent composition according to an embodiment of the present invention, by showing excellent strength characteristics and durability of fast drying, shortening the construction period, In addition to increasing the service life of the structure, there is an effect that can reduce the cost of maintenance. Moreover, it is possible to apply also to a wet adherend, and there exists an effect which shows the outstanding adhesive force. Thus, unlike the conventional surface protection agent made of an organic component, by dramatically shortening the drying step, the construction period can be shortened, there is an effect that can reduce the construction cost.

As mentioned above, although the present invention has been described in detail with reference to preferred embodiments, the present invention is not limited to the above embodiments, and various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention. This is possible.

Example 1

75% by weight of the functional improvement admixture and 25% by weight of the functional improvement filler were stirred with a forced mixer for 2 minutes to prepare an environmentally friendly functional improvement surface protector composition.

In this case, the functional improvement admixture is 92% by weight of ethylene-methyl (meth) acrylate-butyl acrylate copolymer, 1% by weight of 2-hydroxyethyl acrylate-methyl (meth) acrylate copolymer, 1% by weight of dimethylaminoethylacrylate, 1% by weight of dihydrodicyclopentadienylacrylate and 1% by weight of graphene dispersion, 1% by weight of hexamethyldisilazane, N-phenyl-N'-isopropyl-p- 1% by weight of phenylenediamine, 1% by weight of cyclopentasiloxane, 0.5% by weight of a silicone antifoaming agent, and 0.5% by weight of polycarboxylic acid-based water reducing agent were used.

In addition, the functional filler is 50% by weight of barium sulfate, 20% by weight of mullite, 5% by weight of diatomaceous earth, 5% by weight of magnesium carbonate, 5% by weight of aluminum sulfate, 5% by weight of glyceryl stearate, 5 wt% red pigment and 5 wt% titanium dioxide were mixed and used.

Example 2

75% by weight of the functional improvement admixture and 25% by weight of the functional improvement filler were stirred with a forced mixer for 2 minutes to prepare an environmentally friendly functional improvement surface protector composition.

In this case, the functional improvement admixture is 78% by weight of the ethylene-methyl (meth) acrylate-butyl acrylate copolymer, 3% by weight of 2-hydroxyethyl acrylate-methyl (meth) acrylate copolymer, 3% by weight dimethylaminoethylacrylate, 3% by weight dihydrodicyclopentadienylacrylate and 3% by weight graphene dispersion, 3% by weight hexamethyldisilazane, N-phenyl-N'-isopropyl-p- 3% by weight of phenylenediamine, 3% by weight of cyclopentasiloxane, 0.5% by weight of a silicone antifoaming agent, and 0.5% by weight of a polycarboxylic acid-based reducing agent were used.

In addition, the functional filler is 50% by weight of barium sulfate, 20% by weight of mullite, 5% by weight of diatomaceous earth, 5% by weight of magnesium carbonate, 5% by weight of aluminum sulfate, 5% by weight of glyceryl stearate, 5 wt% red pigment and 5 wt% titanium dioxide were mixed and used.

Example 3

75% by weight of the functional improvement admixture and 25% by weight of the functional improvement filler were stirred with a forced mixer for 2 minutes to prepare an environmentally friendly functional improvement surface protector composition.

In this case, the functional improvement admixture is 76% by weight of ethylene-methyl (meth) acrylate-butyl acrylate copolymer, 3% by weight of 2-hydroxyethyl acrylate-methyl (meth) acrylate copolymer, 1% by weight of dimethylaminoethylacrylate, 3% by weight of dihydrodicyclopentadienylacrylate and 5% by weight of graphene dispersion, 3% by weight of hexamethyldisilazane, N-phenyl-N'-isopropyl-p- 3% by weight of phenylenediamine, 1% by weight of cyclopentasiloxane, 2% by weight of tetrabutylammonium hyaluronic acid, 2% by weight of N-methylethanesulfonamide, 0.5% by weight of silicone antifoaming agent, and 0.5% by weight of polycarboxylic acid-based water reducing agent It was.

In addition, the functional filler is 50% by weight of barium sulfate, 20% by weight of mullite, 5% by weight of diatomaceous earth, 5% by weight of magnesium carbonate, 5% by weight of aluminum sulfate, 5% by weight of glyceryl stearate, 2% by weight of red pigment, 5% by weight of titanium dioxide, 1% by weight of barium calcium titanate (BaCaTiO ₃ ), and 2% by weight of sodium persulfate were used.

Comparative Example 1 is presented to compare the physical properties of the environmentally-friendly functional improvement surface protective composition prepared according to Examples 1 to 3 described above.

Comparative Example 1

A protective composition was prepared by stirring 75% by weight of ethylene-methyl (meth) acrylate-butylacrylate copolymer and 25% by weight of barium sulfate with a forced mixer for 2 minutes.

Test Example 1 Preparation of Test Specimen

According to the formulations presented in Examples 1 to 3 and Comparative Example 1, dimensions 100 × 100mm (appearance after coating film formation), 100 × 100 × 100mm mortar plate (neutralization depth) by KS F 4936 (concrete protective coating material) , 100 × 50mm mortar plate (chloride penetration resistance), 150mm test piece (moisture permeability), 150 × 40mm mortar plate (water permeability), 70 × 70 × 20mm mortar plate (adhesive strength) and 230 × 90 × 6mm flexible plate ( The test specimens were manufactured using crack resistance), and the test was performed by curing at a temperature (20 ± 2) ° C. and a humidity (65 ± 10)%. The results are shown in Table 1 below.

division Example 1 Example 2 Example 3 Comparative Example 1 Appearance after coating After standard curing nothing strange nothing strange nothing strange nothing strange After accelerated weathering test nothing strange nothing strange nothing strange nothing strange After hot and cold repeat test nothing strange nothing strange nothing strange nothing strange After alkali resistance test nothing strange nothing strange nothing strange nothing strange After salt resistance test nothing strange nothing strange nothing strange nothing strange Neutralization Depth (mm) 0.15 0.1 0 0.3 Chloride Ion Penetration Resistance (Coulombs) 25 18 10 70 Water vapor permeability (g / m ² · ℃) 18 14 13 22 Adhesion strength
(N / mm ² ) After standard curing 1.58 1.70 1.82 1.40 After accelerated weathering test 1.55 1.65 1.77 1.32 After hot and cold repeat test 1.57 1.68 1.78 1.36 After alkali resistance test 1.57 1.68 1.78 1.37 After salt resistance test 1.54 1.64 1.76 1.30 Water resistance Not pitched Not pitched Not pitched Not pitched Crack Response -20 ℃ nothing strange nothing strange nothing strange nothing strange 20 ℃ nothing strange nothing strange nothing strange nothing strange After accelerated weathering test nothing strange nothing strange nothing strange nothing strange

As shown in Table 1, the environmentally friendly functional surface protection agent composition prepared according to Examples 1 to 3 and the protective agent composition prepared according to Comparative Example 1, both the appearance after the coating film was found without any abnormality, all It was found that the water permeability and crack response is excellent.

In addition, the environmentally-friendly functional surface protective agent composition prepared according to Examples 1 to 3 has a much better neutralization resistance and chloride ion penetration resistance than the protective composition prepared according to Comparative Example 1, and has a low moisture permeability and high adhesion strength. It was found that the performance was very good.

<Test Example 2>

Chemical resistance (sulfuric acid, hydrochloric acid, sodium hydroxide) tests were performed according to KS M ISO 2812 on the environmentally friendly functional improvement surface protective agent composition prepared according to Examples 1 to 3 and the protective agent composition prepared according to Comparative Example 1. In addition, the impact resistance test was carried out according to KS D 6711, and the pollution resistance test was carried out according to the professional specification of the housing construction-2006. The abrasion resistance test was carried out by, and the deodorization test according to the ammonia gas detection tube was performed by KFIA-FI-1004, and the results are shown in Table 2 below.

division Example 1 Example 2 Example 3 Comparative Example 1 Chemical resistance Sulfuric acid nothing strange nothing strange nothing strange nothing strange Hydrochloric acid nothing strange nothing strange nothing strange nothing strange Sodium hydroxide nothing strange nothing strange nothing strange nothing strange Impact resistance nothing strange nothing strange nothing strange offshoot Pollution resistance nothing strange nothing strange nothing strange Trace Nonflammable Materials (Nonflammable, Gas Hazard) fitness fitness fitness incongruity Abrasion Resistance (500g, 500times) (%) 0.13 0.11 0.10 0.25 Deodorization (Deodorization rate,%) 83 85 88 73

As shown in Table 2, it was found that the environmentally friendly functional surface protection agent composition prepared according to Examples 1 to 3 and the protective agent composition prepared according to Comparative Example 1 are all excellent in chemical resistance.

In addition, it can be seen that the environmentally-friendly functional improvement surface protector composition prepared according to Examples 1 to 3 has much better impact resistance, pollution resistance, abrasion resistance, and deodorization performance than the protection agent composition prepared according to Comparative Example 1.

<Test Example 3>

After applying the environmentally friendly functional surface protection agent composition prepared according to Examples 1 to 3 and the protective agent composition prepared according to Comparative Example 1 to the surface of the washed asphalt and concrete until the minimum dry film thickness of 2 mm or more. The surface temperature change test was carried out at 3 pm, the highest temperature, the thermal conductivity test was carried out by KS F 4039, and the weather resistance test was carried out by KS M ISO 11507 (promoting weathering test of paint-fluorescent exposure of UV). Each result is shown in Table 3 below.

division Example 1 Example 2 Example 3 Comparative Example 1 Surface temperature change
(℃) concrete asphalt 46.2 58.3 34.8 33.8 33.0 39.5 Thermal Conductivity (W / mk) 10.2 10.4 10.5 1.01 Weather resistance (168 hours, △ E) 0.60 0.59 0.58 0.90

As shown in Table 3, the environment-friendly functional improvement surface protective agent composition prepared according to Examples 1 to 3 was measured to have a lower surface temperature than the protective agent composition prepared according to Comparative Example 1, the thermal conductivity is high, the heat shielding properties It was found to be excellent. In addition, it also showed excellent resistance to UV showed excellent weather resistance.

<Test Example 3>

For the environmentally friendly functional improvement surface protective agent composition prepared according to Examples 1 to 3 and the protective agent composition prepared according to Comparative Example 1, the sanitary safety standard process test method (Ministry of Environment Notice 2015-103) The heavy metal dissolution test was performed to show the results in Table 4 below.

division Example 1 Example 2 Example 3 Comparative Example 1 Heavy Metal Elution
(mg / L) 1,2-dichloroethane Not detected Not detected Not detected Not detected 1,1-dichloroethylene Not detected Not detected Not detected Not detected 1,1,2-trichloroethane Not detected Not detected Not detected Not detected Trichloroethylene Not detected Not detected Not detected Not detected benzene Not detected Not detected Not detected Not detected 1,1,1-trichloroethane Not detected Not detected Not detected Not detected Dichloromethane Not detected Not detected Not detected Not detected Cis-1,2-dichloroethylene Not detected Not detected Not detected Not detected Epichlorohydrin Not detected Not detected Not detected Not detected Vinyl acetate Not detected Not detected Not detected Not detected Styrene Not detected Not detected Not detected Not detected 1,2-butadiene Not detected Not detected Not detected Not detected 1,3-butadiene Not detected Not detected Not detected Not detected N, N-dimethylaniline Not detected Not detected Not detected Not detected Hg Not detected Not detected Not detected Not detected Carbon tetrachloride Not detected Not detected Not detected Not detected

As shown in Table 4, the environmentally friendly functional surface protection agent composition prepared according to Examples 1 to 3 and the protective agent composition prepared according to Comparative Example 1 can be confirmed that all harmful components including heavy metals are not environmentally friendly. there was.

As described above, those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. Therefore, it should be understood that the embodiments described above are all illustrative and not restrictive. The scope of the present invention should be construed as being included in the scope of the present invention all changes or modifications derived from the meaning and scope of the appended claims rather than the detailed description and equivalent concepts thereof.

Claims (5)

25 to 95 weight percent functional improvement admixture and 5 to 75 weight percent functional improvement filler;
The functional improvement admixture is 20 to 95% by weight of ethylene-methyl (meth) acrylate-butyl acrylate copolymer, 1 to 35 weight of 2-hydroxyethyl acrylate-methyl (meth) acrylate copolymer %, 0.1-25 wt% dimethylaminoethylacrylate, 0.01-15 wt% dihydrodicyclopentadienyl acrylate and 0.01-15 wt% graphene dispersion;
The functional filler is 15 to 95% by weight of barium sulfate, 1 to 35% by weight of mullite, 0.1 to 25% by weight of diatomaceous earth, 0.1 to 15% by weight of magnesium carbonate, 0.1 to 15% by weight of potassium aluminum sulfate, Eco-friendly functional surface protection agent composition comprising 0.1 to 15% by weight of glyceryl stearate and 0.1 to 15% by weight of pigment.
The method of claim 1,
The functional improvement admixture is 0.01 to 10% by weight of hexamethyldisilazane relative to the functional improvement admixture, N-phenyl-N'-isopropyl-p-phenylenediamine (N-phenyl-n'-isopropyl-p-phenylene diamine ) 0.01 to 10% by weight, cyclopentasiloxane 0.01 to 10% by weight, and antifoaming agent 0.01 to 10% by weight;
The functional improvement filler is an eco-friendly functional surface protection agent composition, characterized in that it further comprises 0.01 to 10% by weight of titanium dioxide based on the functional improvement filler weight.
The method of claim 1,
The functional improving admixture further comprises 0.01 to 5 wt% of hyaluronic acid tetrabutylammonium and 0.01 to 5 wt% of N-methylethanesulfonamide relative to the weight of the functional improving admixture;
The functional improvement filler is an eco-friendly functional improvement surface protective agent composition, characterized in that it further comprises 0.01 to 5% by weight barium calcium titanate (BaCaTiO ₃ ) and 0.01 to 5% by weight sodium persulfate relative to the functional improvement filler weight.
As a surface protection and finishing construction method of concrete or steel structure using the environmentally-friendly functional improvement surface protection agent composition of any one of Claims 1-3,
Removing and cleaning impurities or deterioration parts of the concrete or steel structure;
Arranging the base surface using a fast hard putty material on the cleaned area;
Forming a primer layer by applying a surface reinforcing agent to the clean substrate surface;
Applying the eco-friendly functional improvement surface protector composition to the formed primer layer; And
Surface protection and finishing method of concrete or steel structure comprising the step of curing.
The method of claim 4, wherein
The quick-setting putty material is one containing at least one selected from epoxy putty, urethane putty and cemented carbide cement putty;
The surface reinforcing agent comprises a styrene-butadiene latex, ethylene vinyl acetate, polyacrylic ester, acrylic, methyl methacrylate and at least one material selected from the above functional improvement admixtures Finishing method.