KR101762689B1 - Hybrid solvent free modified epoxy lining for chemical resistance of concrete structure and forming method the coating layer using the same - Google Patents

Abstract

The present invention relates to a hybrid-modified, non-application epoxy lining for waterproofing and corrosion resistance of concrete structures and a coating film forming method using the same, and its object is to provide a hybrid coating composition for a concrete structure, which is capable of imparting high corrosion resistance and water- And a method for forming a coating film using the epoxy lining.
The composition of the present invention is composed of 35.0 to 45.0 wt% of a modified solventless epoxy resin, 30.0 to 40.0 wt% of barium sulfate, 4.0 to 8.0 wt% of a hydrocarbon resin, 5.0 to 10.0 wt% of titanium dioxide, 4.0 to 8.0 wt% 0.3 to 1.0 wt% of an organosilane, 2.0 to 4.0 wt% of a flame retardant, 0.5 to 2.0 wt% of a thickener, 0.3 to 1.0 wt% of a dispersant, and 0.3 to 1.0 wt% of a defoamer; A dispersant, 0.3 to 1.0 wt%, a defoaming agent 0.3, and a defoaming agent 0.3 to 1.0 wt%, a water-soluble polyol To 1.0 wt%; and a method of forming a coating film using the epoxy-lined hybrid modified denaturant for the waterproofing and / or the method for the chemical resistance of a concrete structure composed of a mixture of the epoxy resin and the curing agent.

Description

TECHNICAL FIELD The present invention relates to a method for forming a coating film on a substrate, and more particularly, to a method for forming a coating film using the same,

The present invention relates to a hybrid modified non-solvent epoxy lining for a waterproofing and a method of a concrete structure requiring a chemical resistance, and a method for forming a coating film using the epoxy lining. More particularly, the present invention relates to a waterproofing method The present invention relates to a technique for imparting strong corrosion resistance and waterproofing to a concrete structure which is required to have chemical resistance together with a reinforcement mesh by providing a hybrid modified denaturant epoxy lining.

Concrete is a typical construction and civil engineering material, and it is a typical building material which is most widely used for various buildings, civil engineering, and plants due to nonflammability, fire resistance, excellent compressive strength and durability.

However, cracks may occur with the passage of time after completion, and in particular, there is a disadvantage that the chemical resistance is lowered unlike the organic materials. Therefore, corrosion of the concrete occurs due to the acid and alkali solution, As a result, the durability of the structure is deteriorated.

However, due to the typical advantages of concrete, it has been widely used in various water treatment facilities. Especially, in the development of various materials industry and electronic materials, representative facilities for discharging various high-concentration chemical aqueous solutions and storing them are concrete structures.

Therefore, the demand for waterproofing of such water treated concrete structures is further increased.

In general, epoxy resin coatings, unsaturated polyester FRP, polyurea, etc. are applied to a method of forming a coating film for imparting waterproofing and anticorrosion of a concrete structure.

The coating method using the epoxy resin paint has an advantage of showing absorption and adhesion on the concrete surface and excellent strength. However, the elongation of the coating is lowered and the resistance to shrinkage expansion and cracking of the concrete structure is lowered, which may cause problems as a waterproofing and a corrosion-resistant material of the water-treated concrete structure.

The waterproofing method using the polyurea is excellent in the elongation of the coating film. However, the absorption and adhesion to the concrete surface are inferior, and peeling resistance may occur due to damage of the coating film.

The coating film formed by the unsaturated polyester FRP lining waterproofing method has excellent chemical resistance, especially acid resistance, and is used as a concrete protection lining for industrial wastewater treatment plants and various water treatment facilities. However, the unsaturated polyester FRP lining has to form a thick film through lamination of about 5 ~ 7 times of glass fiber, and it is not easy to secure good adhesion to concrete structure. The formed film has a high film strength, but it has little elongation and is not integrated due to the adhesion with concrete. Finally, the concept of making one more inner tube is strong by coating thicker than necessary on the inner wall of concrete structure. In particular, styrene monomers and meta-methyl acrylate monomers, which are heavily added to FRP lining, are easily volatilized and have safety and workplace fire hazards.

Korean Patent Registration No. 10-0997259 (Nov. 23, 2010) Korean Patent Registration No. 10-0873048 (Dec. 3, 2008) Korean Patent Registration No. 10-1046212 (Jun. 28, 2011) Korean Registered Patent Publication No. 10-1556706 (Feb.

SUMMARY OF THE INVENTION It is an object of the present invention to overcome the above-mentioned problems and provide a hybrid modified non-solvent epoxy lining which increases the elongation and adhesion while imparting strong corrosion resistance and water resistance to a concrete structure.

Another object of the present invention is to provide a method of reinforcing a reinforced epoxy-based nonwoven fabric, which has an increased elongation and adhesion strength while imparting strong corrosion resistance and waterproofness to a concrete structure, by laminating a reinforcing mesh with a reinforcing mesh to form an adhesive force, elongation and tensile strength And a method for forming a coating film having both chemical resistance and acid resistance and alkali resistance.

In order to achieve the above objects and to achieve the object of eliminating the drawbacks of the prior art, the present invention provides a method for producing a thermoplastic resin composition comprising 35.0 to 45.0 wt% of a modified solventless epoxy resin, 30.0 to 40.0 wt% of barium sulfate, 4.0 to 8.0 wt% A dispersant of 0.3 to 1.0 wt%, an antifoaming agent of 0.3 to 1.0 wt%, an epoxy reactive diluent of 4.0 to 8.0 wt%, an organosilane of 0.3 to 1.0 wt%, a flame retardant of 2.0 to 4.0 wt%, a thickener of 0.5 to 2.0 wt% 1.0 wt%;

A dispersant, 0.3 to 1.0 wt%, a defoaming agent 0.3, and a defoaming agent 0.3 to 1.0 wt%, a water-soluble polyol To 1.0 wt% based on the total weight of the epoxy resin composition of the present invention and the epoxy resin composition.

The main portion and the curing agent may be mixed at a weight ratio of 1: 0.4 to 1: 0.2.

The modified solventless epoxy resin is obtained by mixing an epoxy resin with a mixture of a Cashew Nut Shell Liquid Resin, a Fluoro Carbon Resin, a Butradien Rubber Resin, a Glycidyl Ether Resin ). ≪ / RTI >

Examples of the hydrocarbon-based resin include phenol-modified liquid hydrocarbons, cresol-modified liquid hydrocarbons, and cycloolefin-modified liquid aromatic hydrocarbons. May be used.

In a preferred embodiment, the modified polyamine is selected from the group consisting of 1,3-cyclohexanedimethylamine, isophoronediamine, cycloaliphatic amine, and aliphatic amine. Or more can be used.

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In another embodiment of the present invention, there is also provided a method for coating a surface of a pretreated concrete structure, comprising the steps of: applying a solventless epoxy primer to a surface of a pretreated concrete structure;

Coating the hybrid modified non-solvent epoxy lining after drying the solventless epoxy primer layer;

Impregnating the reinforcing mesh with a wet hybrid modified denaturant epoxy lining;

Subsequently repeating the steps of applying the hybrid denaturing solventless epoxy lining to the required thickness and impregnating the reinforcing mesh with the wet hybrid denatured solventless epoxy lining;

And then finally forming a hybrid modified non-solvent epoxy lining at the top of the concrete structure. The present invention provides a method for forming a coating film using a hybrid modified non-solvent epoxy lining for waterproofing and / or corrosion resistance of a concrete structure.

In a preferred embodiment, the hybrid modified non-solvent epoxy lining can be applied with a film thickness of 300 to 500 mu m.

In a preferred embodiment, the reinforcement mesh may be 250 to 500 g / m ² .

In a preferred embodiment, when the hybrid laminating solventless epoxy lining coating step and the reinforcement mesh are impregnated, the hybrid modified non-solvent epoxy lining and reinforcement mesh applied in the preceding step can be applied by wet-on-wet method before drying.

In a preferred embodiment, the total thickness of the multilayered hybrid modified non-solvent epoxy lining may be more than 2,500 탆.

The hybrid-modified, non-application epoxy lining excellent in chemical resistance according to the present invention having the above-described characteristics and the method of forming a coating film using the same provide a method layer chemically bonded to a concrete matrix and a reinforcing agent, It is possible to improve the durability of the structure by improving the chemical resistance, anticorrosion property and waterproofness of the concrete structure in which cracks can occur because the anticorrosive coating having excellent elongation and chemical resistance can be formed. Therefore, the elongation And low flexibility of the polyurea paint, low adhesiveness of the mother body and low maternal absorbency of the polyurea paint, and fire hazard and human harmfulness of the reactive monomer (SM, MMA) of the unsaturated polyester-based FRP,

 In addition, it is a useful invention having an advantage of being able to shorten the coating air because it is possible to form 500 [mu] m once in one coating on the vertical surface, which is a highly anticipated invention in industry.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view illustrating a coating film layer structure using a hybrid modified non-solvent epoxy lining and a reinforcing mesh according to an embodiment of the present invention,
2 is a view showing the physical properties of a coating film applied according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

The hybrid modified non-solvent epoxy lining of the present invention comprises a main portion including a modified non-solvent epoxy resin; And a curing agent part containing a modified polyamine of a non-solvent type.

The subject part is composed of 35.0 to 45.0 wt% of a modified solventless epoxy resin, 30.0 to 40.0 wt% of barium sulfate, 4.0 to 8.0 wt% of a hydrocarbon resin, 5.0 to 10.0 wt% of titanium dioxide, 4.0 to 8.0 wt% of an epoxy reactive diluent, 0.3 to 1.0 wt% silane, 2.0 to 4.0 wt% of a flame retardant, 0.5 to 2.0 wt% of a thickener, 0.3 to 1.0 wt% of a dispersant, and 0.3 to 1.0 wt% of a defoamer

The modified polyamine curing agent part may further contain at least one selected from the group consisting of 70.0 to 80.0 wt% of a modified polyamine, 4.0 to 8.0 wt% of a hydrocarbon resin, 10.0 to 20.0 wt% of barium sulfate, 0.5 to 2.0 wt% of a thickener, 1.0 to 2.0 wt% 1.0 wt%, and a defoaming agent 0.3 to 1.0 wt%.

The hybrid modified non-solvent epoxy lining has a composition in which the main portion and the curing agent portion are mixed at a weight ratio of 1: 0.4 to 1: 0.2. This is because the curing reaction is smoothly performed when the chemical equivalent of the subject portion and the curing agent portion for the desired curing reaction is 1: 0.4 to 1: 0.2, and the physical and chemical properties are best achieved at a weight ratio of 1: 0.3.

Hereinafter, the compositional ratios and the reason for the constituent elements constituting the main part and the hardener part will be described in more detail.

First, the modified solventless epoxy resin constituting the main part exhibits the elongation at the time of the back coating, which facilitates crosslinking and effectively disperses the used pigment and forms a chemical bond with the reinforcing mesh to be impregnated at the time of film formation And is designed to have a low viscosity for good painting workability while maintaining the thixotropy function for the back coating, and it is composed of 35.0 ~ 45.0 wt% in the whole composition of the main part. The reason for limiting the numerical value in this way is that if the value is smaller than the lower limit value, there is a problem that the mechanical properties are weakened, and if it is larger than the upper limit value, the crosslinking density is lowered and the chemical resistance is deteriorated.

Modified Solvent-Free Epoxy Resin Epoxy resin is made by mixing Cashew Nut Shell Liquid Resin, Fluoro Carbon Resin, Butradien Rubber Resin, Glycidyl Ether Resin, Modified hybrid epoxy resin modified by using at least one of the above-mentioned hybrid-modified epoxy resins.

The barium sulfate is used for chemical resistance and is composed of 30.0 to 40.0 wt%. The reason for this numerical limitation is that if it is less than 30 wt%, the chemical resistance reinforcement is weak, and if it is larger than 40.0 wt%, the viscosity of the paint increases

The hydrocarbon-based resin is used for reinforcing the water resistance and lowering the viscosity, and is composed of 4.0 to 8.0 wt%. The reason for this numerical limitation is that if it is less than 4.0 wt%, the function of lowering the viscosity is weakened, and if it is larger than 8.0 wt%, the drying speed is slowed down. Examples of the hydrocarbon-based resin include phenol-modified liquid hydrocarbons, cresol-modified liquid hydrocarbons, cyclo-olefin-modified liquid aromatic hydrocarbons ) May be used. In order to improve the water resistance of such a hydrocarbon resin coating, hydrocarbon has a low viscosity in order to facilitate the liquid phase behavior of the coating, and cycloolefin-modified liquid aromatic hydrocarbons are most effective

The titanium dioxide is used as a pigment for concealing and is composed of 5.0 to 10.0 wt%. The reason for this numerical limitation is that a hiding power is less than 5.0 wt%, and a hiding power is less than 8.0 wt%

The epoxy-reactive diluent is used in an amount of 4.0 to 8.0 wt% to aid in the liquid phase behavior of the coating material. The reason for limiting the numerical value in this way is that if the lower limit value is less than the lower limit value, the viscosity of the paint becomes higher, and if it is larger than the upper limit value, the water resistance can be weakened. As the reactive diluent, one or more selected from a monofunctional glycidyl ether, a bifunctional glycidyl ether, a trifunctional glycidyl ether, and a tetrafunctional glycidyl ether may be used. The epoxy reactive diluent which helps the liquid phase behavior of the paint uses a reactive diluent containing a long chain and a low water resistance to achieve long-term elongation and high flex resistance of the coating. The epoxy reactive diluent is used as a bifunctional glycidyl ether, a trifunctional glycidyl ether At least one of them is applied.

The organosilane is used in a cuff ring for chemical bonding with a reinforcing mesh used for forming a coating, and is composed of 0.3 to 1.0 wt%. The reason for this numerical limitation is that if it is smaller than the lower limit value, the chemical bonding with the reinforcing mesh is weak, and if it is larger than the upper limit value, the long-term water resistance may be deteriorated.

The flame retardant is used as a flame retardant to reduce the generation of toxic gases after the coating is applied, and is composed of 2.0 to 4.0 wt%. The reason for this numerical limitation is that if the lower limit value is less than the lower limit value, the flame retardancy is insufficient. If the upper limit value is greater than the upper limit value, the physical properties of the coating film may be affected. As flame retardants, phosphorus-based flame retardants and condensed phosphoric acid-based flame retardants are effective.

The thickener is used in an amount of 0.5 to 2.0 wt%, which is used for increasing the viscosity of the composition and preventing the wet film from flowing down. The reason for limiting the numerical value is that there is a problem that the amount is limited if it is smaller than the lower limit value, and if it is larger than the upper limit value, the viscosity of the paint becomes higher and the paint workability becomes lower. As the thickening agent, one or more selected from orgaro clay, polyamide wax, and polyolefin wax may be used.

The dispersant is used for dispersing titanium dioxide and barium sulfate well and is composed of 0.3 to 1.0 wt%. The reason for limiting the numerical value in this way is that if the lower limit value is smaller than the lower limit value, the dispersion effect is lowered, and if it is larger than the upper limit value, the water resistance may be lowered. Antiserra-100 of BYK, a non-solvent type, is effective as a dispersing agent.

The antifoaming agent is used for removing the air bubbles of the composition to make the coating film uniform, and is composed of 0.3 to 1.0 wt%. The reason for this limitation is that the smaller the lower limit value, the lower the defoaming effect, and if the upper limit value is larger, the cratering may occur. BASF's EFKA-722 is effective as a defoamer.

On the other hand, the curing agent part is composed of 70.0 to 80.0 wt% of modified polyamine, 4.0 to 8.0 wt% of hydrocarbon resin, 10.0 to 20.0 wt% of barium sulfate, 0.5 to 2.0 wt% of thickener, 1.0 to 2.0 wt% of drying promoter, wt%, and a defoaming agent 0.3 to 1.0 wt%.

The modified polyamine is a non-solvent type modified polyamine which can effectively disperse the extender pigment which can increase the water resistance and chemical resistance as well as increase the chemical resistance (chemical resistance) and maintain the thixotoropy function for coating the thick film, It is used for the purpose of helping to design the low point for painting workability and it is composed of 70.0 ~ 80.0 wt%. The reason for this numerical limitation is that if it is smaller than the lower limit value, the cross-linking density of the coating film is deteriorated to deteriorate the physical properties, and if it is larger than the upper limit value, the water resistance is deteriorated. Examples of such modified polyamines include at least one of 1,3-cyclohexanedimethylamine, isophorondiamine, cycloaliphatic amine, and aliphatic amine having excellent chemical resistance. Use one selected polyamine.

The hydrocarbon-based resin is used for reinforcing the water resistance and lowering the viscosity, and is composed of 4.0 to 8.0 wt%. The reason for this numerical limitation is that if the content is less than 4.0 wt%, the function of lowering the viscosity is weak, and if it is larger than 8.0 wt%, the drying speed is slowed. Examples of the hydrocarbon-based resin include phenol-modified liquid hydrocarbons, cresol-modified liquid hydrocarbons, and cycloolefin-modified liquid aromatic hydrocarbons. At least one selected can be used. In order to improve the water resistance of such paints, a low viscosity liquid is used to assist the liquid phase behavior of the paint, and cycloolefin-modified liquid aromatic hydrocarbons are effective.

The barium sulphate is used for chemical resistance and is composed of 10.0 to 20.0 wt%. The reason for this numerical limitation is that if the lower limit value is less than the lower limit value, the chemical resistance reinforcement is weak, and if it is larger than the upper limit value, the viscosity of the paint increases.

The thickener is used in an amount of 0.5 to 2.0 wt%, which is used for increasing the viscosity of the composition and preventing the wet film from flowing down. The reason for limiting the numerical value is that there is a problem that the amount is limited if it is smaller than the lower limit value, and if it is larger than the upper limit value, the viscosity of the paint becomes higher and the paint workability becomes lower. As the thickening agent, one or more selected from orgaro clay, polyamide wax, and polyolefin wax may be used.

The drying promoter is used for promoting a chemical reaction between a subject and a curing agent to shorten the drying time and is composed of 1.0 to 2.0 wt%. The reason for limiting the numerical value in this way is that the drying speed is slow if the lower limit value is lower than the lower limit value, and if the upper limit value is larger than the upper limit value, the working time of the paint becomes shorter.

The dispersant is used for dispersing titanium dioxide and barium sulfate well and is composed of 0.3 to 1.0 wt%. The reason for limiting the numerical value in this way is that if the lower limit value is smaller than the lower limit value, the dispersion effect is lowered, and if it is larger than the upper limit value, the water resistance may be lowered. Antiserra-100 of BYK, a non-solvent type, is effective as a dispersing agent.

The antifoaming agent is used for removing the air bubbles of the composition to make the coating film uniform, and is composed of 0.3 to 1.0 wt%. The reason for this limitation is that the smaller the lower limit value, the lower the defoaming effect, and if the upper limit value is larger, the cratering may occur. BASF's EFKA-722 is effective as a defoamer.

The hybrid-modified non-application epoxy lining made of the composition described above uses a reinforcement mesh together when forming the coating layer. The reinforcement mesh is made of hybrid laminating dyestuff epoxy lining, which has excellent physical adsorption and impregnation ability and can be chemically bonded. For example, at least one selected from a glass fiber mesh, a carbon mesh, and a polyethylene mesh. The reinforced mesh has strong chemical oxide layer coupling chemistry as well as physical bonding by impregnation of hybrid laminating solventless epoxy lining.

The coating film formed by the method using the hybrid modified denaturant epoxy lining for the waterproofing method described above has an excellent adhesive force of about 3 N / mm while the concrete matrix is broken in the adhesion test according to ASTM D 4541, and even when the reinforcement mesh is applied It exhibits an elongation of about 20% and exhibits excellent tensile strength. This is because the coating is not easily peeled off due to the expansion and cracking of the concrete, thereby exhibiting excellent water resistance and chemical resistance to the structure and greatly improving the durability.

A method for forming a waterproof and anticorrosive coating film using the hybrid modified non-solvent epoxy lining thus prepared will be described below with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view illustrating a coating layer structure using a hybrid modified non-solvent epoxy lining and a reinforcing mesh according to an embodiment of the present invention. FIG.

(First step)

Hybrid Modified Solventless Epoxy Lining In order to perform waterproof and anticorrosive coating method, pretreatment to remove pretreatment, latency and foreign matter of concrete surface was carried out. Then, a solventless epoxy primer (C1) was applied to the surface of the pretreated concrete structure, To penetrate and chemically bond the transparent solventless epoxy primer to the concrete surface and to maximize interlayer adhesion with the hybrid coating solventless epoxy lining as a subsequent coating.

The solventless epoxy primer is prepared by sequentially preparing a main part and a curing agent part constituting a two-part type solventless epoxy primer, and subsequently applying a coating process using a solventless epoxy primer mixed with a main part and a curing agent part and a drying step sequentially As shown in FIG.

Wherein the two-part type solvent-free epoxy primer comprises a main part including an epoxy resin; And a curing agent portion containing an amine resin. It is preferable that this solventless epoxy primer is coated at about 80 to 120 占 퐉 in consideration of penetration of the matrix. This is a coating thickness for the sufficient absorption of concrete. If the concrete matrix layer is absorbed too much, the paint is applied twice to form a solvent-free epoxy primer layer.

(Second step)

In the next step, the solvent-free epoxy primer layer with the penetration and chemical bonding of the concrete structure is dried and then coated with a hybrid modified non-solvent epoxy lining (C2).

The hybrid-modified non-solvent epoxy lining to be used is a step of preparing a two-part base and a curing agent by the above-mentioned composition according to the present invention, and thereafter a step of coating using a hybrid modified non-solvent epoxy lining composition obtained by mixing a base and a curing agent Can be performed sequentially.

In this case, the thickness of the coating is 300 ~ 500 ㎛ considering the uniform impregnation of the reinforcing mesh, and several airless spray coatings are applied to form a desired coating.

(Third step)

Thereafter, the reinforcement mesh R1 is impregnated with the wet hybrid modified non-solvent epoxy lining using an impregnation roll.

In this step, the process of preparing the reinforcing mesh and the process of impregnating the reinforcing mesh may be sequentially performed. At this time, it is preferable to use a reinforcing mesh having a weight of 250 to 500 g / m ² , and impregnation is carried out smoothly so that no air bubbles remain in the coating film by using an impregnation roll.

(Step 4)

After completion of drying after the second and third steps, coating the hybrid denaturant epoxy lining (C3) with a film thickness of 300 to 500 mu m. At this time, several airless spray coatings are applied to form a desired coating.

(Step 5)

The reinforcing mesh R2 is impregnated into the wet hybrid denatured solventless epoxy lining coating film using an impregnation roll so that the reinforcement mesh R2 can be sufficiently impregnated in the hybrid-modified solventless epoxy lining C3 formed in the fourth step.

In this case, the fourth and fifth steps may be performed by wet-on-wet method before the second and third steps are dried, or may proceed after drying as described above.

(Step 6)

In the next step, after the fourth and fifth steps are dried, a step of coating a hybrid denatured solventless epoxy lining (C4) with a film thickness of 300 to 500 mu m is carried out. At this time, several airless spray coatings are applied to form a desired coating.

(Step 7)

Subsequently, the wet reinforcement-modified solventless epoxy lining (C4) coating film was impregnated with an impregnation roll so that the web reinforcement mesh (R3) as the final reinforcing mesh could be sufficiently impregnated in the hybrid laminating solventless epoxy lining (C4) formed in the sixth step Step.

Here, the operations of the sixth and seventh steps may be performed by the wet-on-wet method before the fourth and fifth steps are dried, and may proceed even after drying as described above.

(Step 8)

Finally, the hybrid modified non-solvent epoxy lining (C5) is coated with 300 to 500 mu m to form the surface uniformly.

The coating film obtained by the above-mentioned method has a thickness of about 2,500 탆, and the second and third steps may be repeated several times in order to increase the thickness of the coating film if necessary.

Hereinafter, the physical properties of the waterproof and anticorrosive coating layer formed using the hybrid modified non-solvent epoxy resin of the present invention will be described.

The coating film formed by the waterproofing / anticorrosive coating method using the hybrid modified denaturant epoxy lining and reinforcing mesh shown in FIG. 1 was cured to form a dry film for each film thickness, and then a tensile strength and elongation at break test (KS M3006) was conducted Respectively. The test results are shown in Fig.

As shown in the figure, the dry film formed by the waterproof and anticorrosive coating method using the hybrid modified non-solvent epoxy lining of the present invention had a tensile strength of 73.8 N / mm ² at a film thickness of 2.3 mm and the elongation percentage 21.7%. Therefore, it has strong resistance to concrete behavior and micro cracks over time after completion of construction of concrete structure, so it can exhibit excellent durability after application of waterproof and anticorrosive coating method using hybrid modified non-solvent epoxy paint.

Hereinafter, the present invention will be described in more detail with reference to embodiments for forming a waterproof and anticorrosive coating film using a hybrid denaturation solventless epoxy lining. However, the scope of the present invention is not limited to the following examples.

(Example)

Topic section Composition component Content (wt%) Raw material name Hybrid modified epoxy 40.4 hybrid Midified epoxy resin Reactive diluent 6.0 glycidyl ether Hydrocarbon resin 5.0 Cyclo olefin modified liquid aromatic Titanium dioxide 5.0 Titanium dioxide Barium sulfate 38.0 barium sulfate Thickener 1.8 Organo cray Dispersant 0.5 Antiterror-U (BYK) Defoamer 0.5 BYK-066 (BYK) Organosilicon monomer 0.8 Silane coupling agent Flame retardant 2 Condensed phosphate ether flame retardant

Hardener part Composition component Content (wt%) Raw material name Modified polyamine 75.0 Modified cycloaliphatic amine Hydrocarbon resin 5.0 Cyclo olefin modified liquid aromatic Barium sulfate 15.0 barium sulfate Thickener 2.0 Organo cray Dry promoter 2.0 DMP-30 Dispersant 0.5 Antiterror-U (BYK) Defoamer 0.5 BYK-066 (BYK)

Test Items result unit Test Methods The tensile strength 73.8 N / mm ² KS M3006 Bond strength 2.15 N / mm ² ASTM D4541 Elongation 21.7 % KS M3006 Water vapor permeability 0.01 g / m ² / day / mmHg ASTM D1653 Flammability Flammability - KS M3015

medicine Results (weight loss) Condition HCl 10% Appearance good, 0.50% 6 months deposition H ₂ SO ₄ 20% Good appearance, 0.73% 6 months deposition H ₃ PO ₄ 20% Good appearance, 0.74% 6 months deposition HNO ₃ 5% Appearance good, 0.63% 6 months deposition H ₂ O ₂ 10% Good appearance, 0.61% 6 months deposition NaOH 50% Good appearance, 0.03% 6 months deposition KOH 50% Good appearance, -0.08% 6 months deposition Ca (OH) ₂ saturation Appearance good, 0.17% 6 months deposition

The main part and the curing agent part of the hybrid modified non-solvent epoxy paint were prepared by the ingredients and the contents shown in Tables 1 and 2 above.

The paint thus prepared has excellent mechanical properties and elongation percentage of more than 20% as shown in Table 3 when the main part and the hardener part are mixed at a weight ratio of 1: 0.3. Thus, unlike the existing paint or the conventional method, Is excellent.

Further, as shown in Table 4, it can be seen that the appearance of the specimen is good and the weight loss is less than 1%, even when it is immersed for 6 months in various strong acids and strong alkalis.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

C1: Solventless epoxy primer
C2, C3, C4, C5: Hybrid modified non-solvent epoxy lining
R1, R2, R3: Reinforcing mesh

Claims (11)

Modified epoxy resin, 35.0 to 45.0 wt% of barium sulfate, 4.0 to 8.0 wt% of a hydrocarbon resin, 5.0 to 10.0 wt% of titanium dioxide, 4.0 to 8.0 wt% of an epoxy reactive diluent, 0.3 to 10 wt% of an organosilane, 1.0 to 1.0 wt% of a flame retarder, 2.0 to 4.0 wt% of a flame retardant, 0.5 to 2.0 wt% of a thickener, 0.3 to 1.0 wt% of a dispersant, and 0.3 to 1.0 wt% of a defoamer;
A dispersant, 0.3 to 1.0 wt%, a defoaming agent 0.3, and a defoaming agent 0.3 to 1.0 wt%, a water-soluble polyol To 1.0 wt%, based on the total weight of the epoxy resin composition. The epoxy resin lining for waterproofing / antifouling for the chemical resistance of the concrete structure.
The method according to claim 1,
Wherein the main portion and the curing agent portion are mixed in a weight ratio of 1: 0.4 to 1: 0.2. The hybrid composition of claim 1, wherein the main portion and the curing agent portion are mixed at a weight ratio of 1: 0.4 to 1: 0.2.
The method according to claim 1,
The modified solventless epoxy resin is obtained by mixing an epoxy resin with a mixture of a Cashew Nut Shell Liquid Resin, a Fluoro Carbon Resin, a Butradien Rubber Resin, a Glycidyl Ether Resin ). The hybrid laminating method according to any one of claims 1 to 3, wherein the epoxy resin is modified by at least one of the following methods.
The method according to claim 1,
Examples of the hydrocarbon-based resin include phenol-modified liquid hydrocarbons, cresol-modified liquid hydrocarbons, and cycloolefin-modified liquid aromatic hydrocarbons. Wherein the reinforcing layer is formed of at least one selected from the group consisting of a reinforcing layer and a reinforcing layer.
The method according to claim 1,
The modified polyamine may be at least one selected from the group consisting of 1,3-cyclohexanedimethylamine, isophoronediamine, cycloaliphatic amine and aliphatic amine. Hybrid Modified Solventless Epoxy Lining for Waterproofing and Methods for Chemical Resistance of Concrete Structures.
delete Applying a solventless epoxy primer to the surface of the pretreated concrete structure;
Coating a hybrid modified non-solvent epoxy lining according to any one of claims 1 to 5 after drying the solventless epoxy primer layer;
Impregnating the reinforcing mesh with a wet hybrid modified denaturant epoxy lining;
Subsequently repeating the steps of applying the hybrid denaturing solventless epoxy lining to the required thickness and impregnating the reinforcing mesh with the wet hybrid denatured solventless epoxy lining;
And finally forming a hybrid-modified non-solvent epoxy lining at the top of the concrete structure. The method for forming a coating film using the hybrid-modified non-solvent epoxy lining for waterproofing and anticorrosion for the chemical resistance of a concrete structure.
The method of claim 7,
Wherein the hybrid modified non-solvent epoxy lining is applied with a coating thickness of 300 to 500 탆. The method for forming a coating film using a hybrid modified non-solvent epoxy lining for waterproofing and / or chemical resistance of a concrete structure.
The method of claim 7,
Wherein the reinforcement mesh is used in an amount of 250 to 500 g / m < ² >. 6. A method for forming a coating film using a hybrid modified denaturant epoxy lining for waterproofing and / or corrosion for a chemical structure of a concrete structure.
The method of claim 7,
The step of impregnating the epoxy-lining coating and the reinforcing mesh with the hybrid-modified non-application agent is carried out by a wet-on-wet method before the epoxy lining and the reinforcement mesh are hybridized in the preceding step. A Method of Coating Film Formation Using Hybrid Modified Solventless Epoxy Linings for Waterproofing and.
The method of claim 7,
Wherein the total thickness of the multilayered hybrid solventless epoxy lining is 2500 占 퐉 or more. The method for forming a coating film using the hybrid laminating solventless epoxy lining for waterproofing and corrosion resistance of a concrete structure.

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