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Epoxy coal asphalt anti-corrosion paint and manufacturing method

A technology of anti-corrosion coatings and epoxy coal tar pitch, which is applied in the direction of anti-corrosion coatings, asphalt coatings, epoxy resin coatings, etc., and can solve the problems of poor resistance to mortar stress cracks, short storage time of coatings in the open air, and poor light aging resistance of coatings, etc. problems, to achieve excellent physical and mechanical properties, good anti-microbial damage, and good adhesion

Inactive Publication Date: 2012-08-15
CNPC RES INST OF ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing PCCP (prestressed steel cylinder concrete pipe) outer wall mostly adopts epoxy coal tar pitch paint for anti-corrosion. The disadvantage of this type of paint is that the paint has poor light aging resistance, a thinner film at one time, and poor toughness of the coating, which causes corrosion. The open-air storage time of the back coating is short, the construction cost is high, and the ability to resist mortar stress cracks is poor

Method used

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  • Epoxy coal asphalt anti-corrosion paint and manufacturing method
  • Epoxy coal asphalt anti-corrosion paint and manufacturing method
  • Epoxy coal asphalt anti-corrosion paint and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The light-resistant flexible epoxy coal tar pitch anticorrosion paint used for the outer wall of PCCP (prestressed steel tube concrete pipe) and its manufacturing method.

[0023] Add successively the E-20 bisphenol A type epoxy resin of 1 weight part, the xylene of 0.23 weight part, the butanol of 0.11 weight part, the methyl ethyl ketone of 0.05 weight part, the coal tar pitch resin of 0.7 weight part in the stainless steel bucket Liquid, 0.25 parts by weight of chlorinated ethylene vinyl acetate copolymer, 0.05 parts by weight of precipitated barium sulfate, 0.01 parts by weight of sericite powder, 0.008 parts by weight of talcum powder, 0.01 parts by weight of 132. Disperse at high speed for 0.5-1 hour, then grind for 1 hour with a sand mill. To the ground product, add 0.008 parts by weight of coupling agent 201, 0.01 parts by weight of 3650 additives and 0.008 parts by weight of silicone defoamer, and then dispersed at high speed for 30 minutes to prepare compon...

Embodiment 2

[0029] The light-resistant flexible epoxy coal tar pitch anticorrosion paint used for the outer wall of PCCP (prestressed steel tube concrete pipe) and its manufacturing method.

[0030] Add successively the E-20 bisphenol A type epoxy resin of 1 weight part, the xylene of 0.25 weight part, the butanol of 0.13 weight part, the methyl ethyl ketone of 0.06 weight part, the coal tar pitch resin of 0.75 weight part in stainless steel bucket liquid, 0.27 parts by weight of chlorinated ethylene vinyl acetate copolymer, 0.05 parts by weight of precipitated barium sulfate, 0.01 parts by weight of sericite powder, 0.008 parts by weight of talcum powder, 0.009 parts by weight of 132, disperse at high speed for 0.5 hours, and then grind for 1 hour with a sand mill. To the ground product, add 0.008 parts by weight of coupling agent 201, 0.011 parts by weight of 3650 additives and 0.008 parts by weight of silicone defoamer, and then dispersed at high speed for 30 minutes to prepare comp...

Embodiment 3

[0036] The light-resistant flexible epoxy coal tar pitch anticorrosion paint used for the outer wall of PCCP (prestressed steel tube concrete pipe) and its manufacturing method.

[0037] Add successively the E-20 bisphenol A type epoxy resin of 1 weight part, the xylene of 0.23 weight part, the butanol of 0.11 weight part, the methyl ethyl ketone of 0.05 weight part, the coal tar pitch resin of 0.75 weight part in the stainless steel bucket liquid, 0.27 parts by weight of chlorinated ethylene vinyl acetate copolymer, 0.05 parts by weight of precipitated barium sulfate, 0.01 parts by weight of sericite powder, 0.008 parts by weight of talcum powder, and organic bentonite of 0.015 parts by weight, dispersed at a high speed for 0.5 hour, and then Grind with a sand mill for 1 h. With the product after grinding, add the coupling agent 201 of 0.008 weight part, the Ciba of 0.011 weight part successively 3650 additives and 0.008 parts by weight of silicone defoamer, and then disper...

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Abstract

The invention relates to an epoxy coal asphalt anti-corrosion paint, comprising a component A and a component B, wherein the component A is composed of E-42 type bisphenol A-type epoxy resin, dimethyl benzene, butanol, butanone, coal asphaltic resin, toughening resin, precipitated barium sulfate, sericite in powder, talc powder, associative rheological control auxiliaries, Isopropyl tri(dioctylpyrophosphate)titanate, fluorocarbon macromolecular compound and organic silicon defoamer; the component B is composed of cashew mannich amide, 2,4,6-Tris(dimethylaminomethyl)phenol, alcohol and hydroxybenzene benzotriazole ultraviolet absorber; the mass ratio of A to B is 10:1; and the paint can be used after A and B are evenly mixed. The epoxy coal asphalt anti-corrosion coating has the toughness,which is used for anti-corrosion for a PCCP outer wall, has excellent adhesive force, good microorganism corrosion resistance and long period of use and has certain light aging resistance.

Description

technical field [0001] The invention relates to a light-resistant flexible epoxy coal tar pitch anti-corrosion coating for the outer wall of PCCP (prestressed steel cylinder concrete pipe) and its manufacturing method. The dry film thickness of one-time film formation exceeds 500 μm, which can be directly applied to initially set or wet concrete surface construction. Background technique [0002] The existing PCCP (prestressed steel cylinder concrete pipe) outer wall mostly adopts epoxy coal tar pitch paint for anti-corrosion. The disadvantage of this type of paint is that the paint has poor light aging resistance, a thinner film at one time, and poor toughness of the coating, which causes corrosion. The open-air storage time of the back coating is short, the construction cost is high, and the ability to resist mortar stress cracks is poor. Contents of the invention [0003] The object of the present invention is to provide a kind of acid-resistant, alkali-resistant, salt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/02C09D195/00C09D5/08C09D7/12
Inventor 杜建伟何鱼游张丽萍郭晓军段绍明刘杨宇吕光明杜强杨长春张静
Owner CNPC RES INST OF ENG TECH
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