KR101559573B1 - Functional composition for steel material coating and steel material coating method using the same - Google Patents
Functional composition for steel material coating and steel material coating method using the same Download PDFInfo
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- KR101559573B1 KR101559573B1 KR1020140169429A KR20140169429A KR101559573B1 KR 101559573 B1 KR101559573 B1 KR 101559573B1 KR 1020140169429 A KR1020140169429 A KR 1020140169429A KR 20140169429 A KR20140169429 A KR 20140169429A KR 101559573 B1 KR101559573 B1 KR 101559573B1
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Abstract
Description
The present invention relates to a composition for coating a functional steel and a method of coating a steel material using the same. More particularly, the present invention relates to a composition for coating a steel material, which can be firmly attached to a surface of a steel material, In particular, since the rust inhibitor component is further contained, the effect of preventing the occurrence of rust on the steel is further improved. In addition, it is possible to improve the cold resistance, which does not change its state even in the cold state after coating the steel, And excellent safety of bridges and the like, and a coating method of a steel material using the composition.
In general, steel is used as a material for construction work and is a metal containing 95% or more of iron and an additive such as carbon, chromium, manganese, molybdenum, and nickel. Steel is made by mining and smelting iron ore and processed by rolling or other methods.
These steels are used for the support of bridges due to their excellent strength, and they are widely used as skeletons of various architectural structures at present.
However, there is a risk of corrosion such as rusting even with excellent strength of the steel, which makes it difficult to maintain its durability for a long time.
Particularly, when steel is used as a support for bridges and buildings, if corrosion occurs in the steel, the steel can not withstand the load of the vehicle or train passing through the bridge and the bridge, .
In order to solve this problem, there has been an effort to solve the problem by coating a waterproofing composition on a steel material. However, after a certain period of time, adhesion of the coating material to the steel material is decreased and the coating composition is detached, resulting in corrosion of the steel material.
In addition, there has been a problem that the state of the cured composition changes due to the cold during the cold winter.
Therefore, it is coated on the surface of the steel which is applied to bridges and buildings, so that it is firmly attached to the surface of the steel material and at the same time, the effect of preventing rusting of the steel material is excellent. In addition, the cold resistance, There is a need for research and development of an improved composition for coating steel.
In order to solve the above-mentioned problems, the present invention provides a resin composition comprising 2.8 to 20 parts by weight of a water-soluble epoxy resin, 50 to 50 parts by weight of an ACM (Polyacrylate Elastomer) containing a carboxyl group crosslinking site, 100 parts by weight of an acrylic acid ester copolymer, 60 parts by weight of acetic acid, 2.8 to 12 parts by weight of acetic acid, 0.1 to 0.5 parts by weight of trimethoxysilane, 130 to 220 parts by weight of water, 1.21 to 1.29 parts by weight of a diffusion barrier agent and 1 to 14 parts by weight of quaternary ammonium, The rust preventive agent composed of the weight part and the remainder water can be applied to the surface of the steel material applied to the bridge or the building and can be firmly attached to the surface of the steel material. The present invention also provides a composition for coating a functional steel material and a method of coating a steel material using the same.
In addition, the technique according to the present invention is characterized in that 2.8-20 parts by weight of a water-soluble epoxy resin, 50-60 parts by weight of an ACM (Polyacrylate Elastomer) containing a carboxyl group crosslinking site is added to 100 parts by weight of an acrylic acid ester copolymer, 2.8 to 12 parts by weight of acetic acid, 0.1 to 0.5 parts by weight of trimethoxysilane, 130 to 220 parts by weight of water, 1.21 to 1.29 parts by weight of a diffusion barrier and 1 to 14 parts by weight of quaternary ammonium, 1 to 3 parts by weight of a phenol derivative, The present invention is intended to improve the cold resistance of the steel which is applied to bridges and buildings even after the coating even when the cold is not changed.
Further, the technique according to the present invention is characterized in that 2.8 to 20 parts by weight of a water-soluble epoxy resin, 50 to 60 parts by weight of an ACM (Polyacrylate Elastomer) containing a carboxyl group crosslinking site is added to 100 parts by weight of an acrylic acid ester copolymer, 2.8 to 12 parts by weight of acetic acid, 0.1 to 0.5 parts by weight of trimethoxysilane, 130 to 220 parts by weight of water, 1.21 to 1.29 parts by weight of a diffusion barrier and 1 to 14 parts by weight of quaternary ammonium, 1 to 3 parts by weight of a phenol derivative, Water is applied so as to include an antirust agent composed of water, so that excellent heat shielding, excellent expansion ratio, and excellent safety of bridges can be achieved.
The present invention for achieving the above-mentioned objects is as follows. That is, the composition for coating a functional steel according to the present invention is a composition for coating a functional steel coating on the surface of a steel material applied to a bridge or a building, wherein the water-soluble epoxy 2.8 to 20 parts by weight of a resin, 50 to 60 parts by weight of ACM (Polyacrylate Elastomer) containing a carboxyl group crosslinking site, 2.8 to 12 parts by weight of acetic acid, 0.1 to 0.5 parts by weight of trimethoxysilane, 130 to 220 parts by weight of water, 1.21 to 1.29 parts by weight of a quaternary ammonium salt, 1 to 14 parts by weight of quaternary ammonium, 1 to 3 parts by weight of a phenol derivative, and the balance water.
Here, the thickness of the composition coated on the steel material is preferably 0.2 mm to 15 mm.
The diffusion barrier may be selected from the group consisting of 5-amino-N-acetyltryptamine, 5-aminovaleric acid, 4-aminonicotinic acid, 4- (4-aminophenylalanine), and a mixture thereof.
Meanwhile, the method of coating a steel material using the composition for coating a functional steel according to the present invention is a method of coating a steel material using a composition for coating a functional steel on the surface of a steel material applied to a bridge or a building, wherein the acrylic acid ester 2.8 to 20 parts by weight of a water-soluble epoxy resin, 50 to 60 parts by weight of an ACM (Polyacrylate Elastomer) containing a carboxyl group crosslinking site, 2.8 to 12 parts by weight of acetic acid, 0.1 to 0.5 parts by weight of trimethoxysilane, , 130 to 220 parts by weight of water, 1.21 to 1.29 parts by weight of a diffusion barrier agent and 1 to 14 parts by weight of quaternary ammonium, 1 to 3 parts by weight of a phenol derivative and the balance water to obtain a composition for coating a functional steel step; Cleaning the surface of the steel material to be coated; Applying a rust reducing agent to the surface of the cleaned steel material; Coating a surface of a steel material with a composition for coating a functional steel obtained in the step of obtaining the composition for coating a functional steel; And coating the exposed surface of the coated steel with a surface protective material.
At this time, the diffusion preventive agent may be selected from the group consisting of 5-amino-N-acetyltryptamine, 5-aminovaleric acid, 4-aminonicotinic acid, 4- (4-aminophenylalanine), and a mixture thereof.
The rust-inhibiting reducing agent is preferably provided as a nitrite-based lithium salt and silane.
Further, it is preferable that the surface protection material is one selected from the group consisting of acrylic, epoxy, urethane, urea, and mixtures thereof.
The effects of the composition for coating functional steel according to the present invention and the method of coating a steel material using the same will be described below.
First, 2.8 to 20 parts by weight of a water-soluble epoxy resin, 50 to 60 parts by weight of an ACM (Polyacrylate Elastomer) containing a carboxyl group crosslinking site, 2.8 to 12 parts by weight of acetic acid, 100 parts by weight of an acrylic acid ester copolymer, 0.1 to 0.5 parts by weight of trimethoxysilane, 130 to 220 parts by weight of water, 1.21 to 1.29 parts by weight of a diffusion barrier and 1 to 14 parts by weight of quaternary ammonium, 1 to 3 parts by weight of a phenol derivative, , It can be applied to the surface of the steel material applied to the bridge or the building and can be firmly attached to the surface of the steel material and the rust prevention effect of the steel material is more excellent Do.
Second, from 2.8 to 20 parts by weight of a water-soluble epoxy resin, from 50 to 60 parts by weight of an ACM (Polyacrylate Elastomer) containing a carboxyl group crosslinking site, from 2.8 to 12 parts by weight of acetic acid, based on 100 parts by weight of an acrylic acid ester copolymer 0.1 to 0.5 parts by weight of trimethoxysilane, 130 to 220 parts by weight of water, 1.21 to 1.29 parts by weight of a diffusion barrier and 1 to 14 parts by weight of quaternary ammonium, 1 to 3 parts by weight of a phenol derivative, It is possible to improve the cold resistance of the steel which is applied to bridges and buildings and the state of which does not change even after the coating.
Third, from 2.8 to 20 parts by weight of a water-soluble epoxy resin, from 50 to 60 parts by weight of ACM (Polyacrylate Elastomer) containing a carboxyl group crosslinking site, from 2.8 to 12 parts by weight of acetic acid based on 100 parts by weight of an acrylic acid ester copolymer 0.1 to 0.5 parts by weight of trimethoxysilane, 130 to 220 parts by weight of water, 1.21 to 1.29 parts by weight of a diffusion barrier and 1 to 14 parts by weight of quaternary ammonium, 1 to 3 parts by weight of a phenol derivative, It is possible to provide excellent heat shielding against the surface of the steel material coated with the composition for coating steel, excellent expansion ratio, and excellent safety of the bridge.
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a block diagram showing a flow of a coating method of a steel material using a composition for coating a functional steel.
Hereinafter, preferred embodiments of the composition for coating functional steel according to the present invention and the method for coating steel using the same will be described in detail with reference to the accompanying drawings.
First, the composition for coating functional steel according to a preferred embodiment of the present invention is applied to the surface of a steel material to be applied to bridges or buildings, and is composed of 100 parts by weight of an acrylic acid ester copolymer, 50 to 60 parts by weight of ACM (Polyacrylate Elastomer) containing carboxyl group crosslinking sites, 2.8 to 12 parts by weight of acetic acid, 0.1 to 0.5 parts by weight of trimethoxysilane, 130 to 220 parts by weight of water, And 1 to 14 parts by weight of quaternary ammonium, 1 to 3 parts by weight of a phenol derivative, and the balance of water.
Here, the acrylic acid ester copolymer can improve the adhesion of the composition of the present invention to the steel when the composition according to the present invention is coated on the steel.
In addition, when the composition for coating steel according to the present invention including the acrylic acid ester copolymer is prepared, it contributes not only to the increase of the adhesion but also to the weatherability of the steel and the workability of the composition, .
When the acrylic ester copolymer is contained in an amount lower than the lower limit of the above-mentioned composition range, the effect of contributing to adhesion, weatherability, and workability is insignificant, and if the acrylic acid ester copolymer exceeds the upper limit of the composition range, The content of the remaining substances contributing to the effect can be limited.
When the water-soluble epoxy resin is contained in the composition according to the present invention and coated on a steel material, the effect of contributing to the adhesion between the composition according to the present invention and the steel material is large. Since the water-soluble epoxy resin is water-soluble, It is preferable because it is eco-friendly.
The water-soluble epoxy resin is preferably contained in an amount of 2.8 to 20 parts by weight based on 100 parts by weight of the acrylic acid ester copolymer. When the water-soluble epoxy resin is added in an amount of less than 2.8 parts by weight, the water-soluble epoxy resin is contained in the composition according to the present invention, The content of the composition contributing to the effect of the composition according to the present invention can be limited, which is undesirable.
The ACM (Polyacrylate Elastomer) comprising the carboxyl group crosslinking site may include a monomer of a main chain and a side chain monomer containing a carboxyl group.
In addition, the ACM (Polyacrylate Elastomer) containing the crosslinking site of the carboxyl group may have an average molecular weight of 5,000 to 10,000.
When the ACM containing the crosslinking site of carboxyl group is included in the composition according to the present invention and coated on the steel material, adhesion with the steel material to be adhered is excellent even in the cold winter, and there is no warping, Effects can be generated.
The ACM containing the carboxyl group crosslinking site may be contained in an amount of preferably 50 to 60 parts by weight based on 100 parts by weight of the acrylic acid ester copolymer. When the ACM containing the carboxyl group crosslinking site is contained in an amount of less than 50 parts by weight, When the ACM containing the crosslinking site contains less than 60 parts by weight of the ACM containing the carboxyl group crosslinking site, the effect of the cold resistance to be achieved is insufficient and the content of the remaining composition achieving the effect of the present invention is limited Which is not preferable.
The acetic acid may be a form of an acid anhydride which is a compound ((RCO) 2O) in which one molecule of water is separated from two carboxylic acids. Since the acetic acid is included in the composition according to the present invention, the composition according to the present invention can achieve better adhesion to the steel material, which is preferable. When the acetic acid is contained in an amount of less than 2.8 parts by weight, the effect of contributing to the excellent adhesion is small, which is not preferable. When the acetic acid is added in an amount exceeding 12 parts by weight, The content of the remaining composition to be used may be limited.
The trimethoxysilane improves the workability of the composition according to the present invention, and preferably 0.1 to 0.5 parts by weight based on 100 parts by weight of the acrylic ester copolymer. If the trimethoxysilane is added in an amount of less than 0.1 parts by weight, sufficient workability in the composition can not be attained and it is not preferable. When the trimethoxysilane is contained in an amount exceeding 0.5 parts by weight, The content of the remaining substances can be limited, which is not preferable.
The water serves as a solvent in the composition according to the present invention, and preferably 130 to 220 parts by weight based on 100 parts by weight of the acrylic acid ester copolymer. If the amount of the water is less than 130 parts by weight, it is not preferable because the solvent can not sufficiently serve as a solvent. If the amount of the water is more than 220 parts by weight, the curing time of the composition may be excessively delayed. Which adversely affects adherence, which is an effect to be desired.
The diffusion preventive agent is used to form a protective coating on the surface of the exposed steel material and to fix the intrinsic salt and the proportional salt, and is used in an amount of 1.21 to 1.29 parts by weight.
At this time, the diffusion preventive agent may be selected from the group consisting of 5-amino-N-acetyltryptamine, 5-aminovaleric acid, 4-aminonicotinic acid, 4- (4-aminophenylalanine), and a mixture thereof.
Meanwhile, the rust inhibitor preferably comprises 1 to 14 parts by weight of quaternary ammonium, 1 to 3 parts by weight of phenol derivative, and the balance.
The quaternary ammonium (quaternary ammonium salt) salt is a kind of cationic surfactant mainly used as a cleansing agent and is used for suppressing plaque and antibacterial effect. In the present invention, , The rust preventive effect rapidly decreases. When the amount exceeds 14 parts by weight, the antifouling property sharply increases so as to weaken the bondability of the subsequent layer.
The phenol derivative is a detergent which performs a disinfecting function. In the present invention, the phenol derivative is added to improve the adhesion to the subsequent coating film, that is, the surface, in addition to the cleaning function. For this purpose, it should be added in the range of 1 to 3 parts by weight, and if it is added in an amount of less than 1 part by weight, it is difficult to expect a cleaning effect, and if it exceeds 3 parts by weight, harmfulness is a concern.
The composition for coating functional steel according to the present invention having the composition as described above is preferably coated with a thickness of 0.2 mm to 15 mm to be coated on a steel material.
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a block diagram showing a flow of a coating method of a steel material using a composition for coating a functional steel.
Referring to FIG. 1, a composition for coating a functional steel material as described above is applied to the coating of a steel material, which will be described below, and a detailed description of the detailed composition of the above-described functional steel coating composition is omitted do.
Referring to FIG. 1, a method of coating a steel material using a composition for coating a functional steel according to the present invention is a method of coating a surface of a steel material applied to a bridge or a building using a composition for coating a functional steel, (S120), a rust-inhibitive reducing agent application step (S130), a steel surface coating step (S140), and a step of coating with a surface protecting material (S150).
Here, the step (S110) of obtaining the composition for coating with a functional steel material may comprise: 2.8 to 20 parts by weight of a water-soluble epoxy resin, 100 parts by weight of an ACM (Polyacrylate Elastomer) containing a carboxyl group crosslinking site, 50 to 60 parts by weight of acetic acid, 2.8 to 12 parts by weight of acetic acid, 0.1 to 0.5 parts by weight of trimethoxysilane, 130 to 220 parts by weight of water, 1.21 to 1.29 parts by weight of diffusion barrier agent and 1 to 14 parts by weight of quaternary ammonium, To 3 parts by weight of an antioxidant and the balance of water to obtain a composition for coating a functional steel.
Also, the surface cleaning step (S120) of the steel material is a step of cleaning the surface of the steel material to be coated.
The surface cleaning step (S120) of this steel material is to remove foreign matter on the surface when the steel material to be painted is before aging, and to remove the rust when the steel material to be painted is old and rust exists on the surface. , A water sand jet, and other suitable methods to remove the rust while cleaning.
The anti-corrosive reducing agent applying step S130 includes a step of applying a rust-preventive reducing agent to the surface of the cleaned steel through the surface cleaning step S120.
Here, nitrite-based lithium salt and silane (SiH 4 ) are used as the rust-preventive reducing agent. When the rust-preventive reducing agent composed of the nitrite-based lithium salt and silane is applied by a brush or a roller or the like, The surface of the corroded steel is subjected to rust reduction and corrosion.
Therefore, the anti-corrosive reducing agent applying step (S130) may not proceed if the steel material to be painted is not corroded.
Meanwhile, the steel surface coating step (S140) may be performed by applying the composition for painting a functional steel obtained through the step (S110) of obtaining the composition for painting a functional steel material to the surface of the cleaned steel material through the surface cleaning step (S120) And a step of coating the surface of the steel material cleaned through the surface cleaning step (S120) of the steel material and applied with the rust preventive agent through the rust-inhibitive reducing agent applying step (S130).
In addition, the step of coating with the surface protective material (S150) comprises coating the surface exposed to the outside of the steel material painted through the steel surface coating step (S140) with a surface protective material.
In this case, the surface protecting material to be applied in the step of coating with the surface protective material (S150) is not particularly limited as long as it can finish the surface of the steel material. However, the surface protective material is not limited to the acrylic, epoxy, It is preferable to be any one selected.
According to the composition for painting a functional steel material and the method of coating a steel material using the same according to the present invention as described above, it is possible to use a composition comprising 2.8 to 20 parts by weight of a water-soluble epoxy resin, 100 parts by weight of a carboxyl group crosslinking agent 50 to 60 parts by weight of an ACM (Polyacrylate Elastomer) containing a silane compound, 2.8 to 12 parts by weight of acetic acid, 0.1 to 0.5 parts by weight of trimethoxysilane, 130 to 220 parts by weight of water, 1.21 to 1.29 parts by weight of a diffusion barrier, 1 to 14 parts by weight of a phenol derivative and 1 to 3 parts by weight of a phenol derivative and an antirust agent composed of the remainder are applied to the surface of a steel material applied to a bridge or a building to be firmly attached to the surface of the steel material, Since the composition further contains a rust inhibitor component, the effect of preventing rusting of the steel is more excellent.
In addition, 2.8 to 20 parts by weight of a water-soluble epoxy resin, 50 to 60 parts by weight of an ACM (Polyacrylate Elastomer) containing a carboxyl group crosslinking site, 2.8 to 12 parts by weight of acetic acid, 100 parts by weight of an acrylic acid ester copolymer, 0.1 to 0.5 parts by weight of trimethoxysilane, 130 to 220 parts by weight of water, 1.21 to 1.29 parts by weight of a diffusion barrier and 1 to 14 parts by weight of quaternary ammonium, 1 to 3 parts by weight of a phenol derivative, It is possible to improve the cold resistance of the steel which is applied to bridges and buildings and the state of which does not change even after the coating.
Furthermore, it is preferable to add 2.8 to 20 parts by weight of a water-soluble epoxy resin, 50 to 60 parts by weight of ACM (Polyacrylate Elastomer) containing a carboxyl group crosslinking site, 2.8 to 12 parts by weight of acetic acid to 100 parts by weight of an acrylic acid ester copolymer 0.1 to 0.5 parts by weight of trimethoxysilane, 130 to 220 parts by weight of water, 1.21 to 1.29 parts by weight of a diffusion barrier and 1 to 14 parts by weight of quaternary ammonium, 1 to 3 parts by weight of a phenol derivative, It is possible to provide excellent heat shielding against the surface of the steel material coated with the composition for coating with steel, excellent expansion ratio, and excellent safety of the bridge.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, the invention is not limited thereto. Various modifications may be made by those skilled in the art. Are included in the scope of the present invention.
Claims (7)
2.8 to 20 parts by weight of a water-soluble epoxy resin, 50 to 60 parts by weight of an ACM (Polyacrylate Elastomer) containing a carboxyl group crosslinking site, 2.8 to 12 parts by weight of acetic acid, 0.1 to 0.5 parts by weight of methoxysilane, 130 to 220 parts by weight of water, 1.21 to 1.29 parts by weight of a diffusion barrier and 1 to 14 parts by weight of quaternary ammonium, 1 to 3 parts by weight of a phenol derivative, Obtaining a composition for functional steel coating;
Cleaning the surface of the steel material to be coated;
Applying a rust reducing agent to the surface of the cleaned steel material;
Coating a surface of a steel material with a composition for coating a functional steel obtained in the step of obtaining the composition for coating a functional steel; And
And coating a surface of the painted steel material exposed to the outside with a surface protective material.
The diffusion barrier may be selected from the group consisting of 5-amino-N-acetyltryptamine, 5-aminovaleric acid, 4-aminonicotinic acid, (4-aminophenylalanine), and a mixture thereof. The coating method for a steel material according to claim 1,
Wherein the rust-inhibitive reducing agent is composed of a nitrite-based lithium salt and silane.
Wherein the surface protecting material is any one selected from the group consisting of acrylic, epoxy, urethane, urea, and mixtures thereof.
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| KR1020140169429A KR101559573B1 (en) | 2014-12-01 | 2014-12-01 | Functional composition for steel material coating and steel material coating method using the same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101963090B1 (en) * | 2018-12-12 | 2019-03-27 | 장승호 | Paint composition for surface protection of steel structure, and method of coating for surface protection of steel structure using the same |
| KR102164573B1 (en) | 2020-06-02 | 2020-10-13 | 한선경 | Steel painting composition for surface of steel structures and repairing and coating method for surface of steel structures using the same |
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| JP2006281186A (en) * | 2005-03-31 | 2006-10-19 | Sumitomo Metal Ind Ltd | Method for rustproofing steel |
| KR101165785B1 (en) | 2012-04-23 | 2012-07-16 | 우리건설 주식회사 | Mortar composition for repairing concrete structure and using method thereof |
| KR101230290B1 (en) * | 2012-09-26 | 2013-02-12 | 부림산업개발(주) | Composition for steel material coating and steel material coating method using the same |
| KR101309612B1 (en) * | 2013-05-09 | 2013-09-17 | 우경건설 주식회사 | Composition for cross-section repairment of reinforced concrete structures and repairing method for cross-section of reinforced concrete structures using the same |
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2014
- 2014-12-01 KR KR1020140169429A patent/KR101559573B1/en active IP Right Grant
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006281186A (en) * | 2005-03-31 | 2006-10-19 | Sumitomo Metal Ind Ltd | Method for rustproofing steel |
| KR101165785B1 (en) | 2012-04-23 | 2012-07-16 | 우리건설 주식회사 | Mortar composition for repairing concrete structure and using method thereof |
| KR101230290B1 (en) * | 2012-09-26 | 2013-02-12 | 부림산업개발(주) | Composition for steel material coating and steel material coating method using the same |
| KR101309612B1 (en) * | 2013-05-09 | 2013-09-17 | 우경건설 주식회사 | Composition for cross-section repairment of reinforced concrete structures and repairing method for cross-section of reinforced concrete structures using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101963090B1 (en) * | 2018-12-12 | 2019-03-27 | 장승호 | Paint composition for surface protection of steel structure, and method of coating for surface protection of steel structure using the same |
| KR102164573B1 (en) | 2020-06-02 | 2020-10-13 | 한선경 | Steel painting composition for surface of steel structures and repairing and coating method for surface of steel structures using the same |
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