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High-build epoxy coal tar pitch anticorrosive coating and preparation method thereof

A technology of epoxy coal tar pitch and anti-corrosion coatings, 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, poor light aging resistance of coatings, and short storage time of coatings in the open air. problems, achieve the effect of improving light aging resistance, good adhesion, and excellent physical and mechanical properties

Inactive Publication Date: 2011-05-04
TIANJIN BO XING ENG SCI & TECH LIMITED COMPANY OF CNPC
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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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  • High-build epoxy coal tar pitch anticorrosive coating and preparation method thereof
  • High-build epoxy coal tar pitch anticorrosive coating and preparation method thereof
  • High-build epoxy coal tar pitch anticorrosive coating and preparation method thereof

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Embodiment 1

[0020] The thick-film epoxy coal tar pitch anticorrosion coating used for the outer wall of PCCP (prestressed steel tube concrete pipe) and its manufacturing method.

[0021] 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 stainless steel bucket Liquid, the toughening resin of 0.25 parts by weight, the precipitated barium sulfate of 0.05 parts by weight, the sericite powder of 0.01 parts by weight, the talcum powder of 0.008 parts by weight, the Ciba of 0.01 parts by weight RHEOVIS 132. Disperse at high speed for 0.5-1 hour, then grind for 1 hour with a sand mill. With the product after grinding, add the coupling agent 201 of 0.008 weight part, the Ciba of 0.01 weight part successively EFKA 3650 additives and 0.008 parts by weight of silicone defoamer, and then dispersed at high speed for 30...

Embodiment 2

[0027] The thick-film epoxy coal tar pitch anticorrosion coating used for the outer wall of PCCP (prestressed steel tube concrete pipe) and its manufacturing method.

[0028] 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 butanone of 0.05 weight part, the coal tar pitch resin of 0.75 weight part in the stainless steel bucket Liquid, the toughening resin of 0.27 parts by weight, the precipitated barium sulfate of 0.05 parts by weight, the sericite powder of 0.01 parts by weight, the talcum powder of 0.008 parts by weight, the Ciba of 0.009 parts by weight RHEOVIS 132, disperse at high speed for 0.5 hours, and then grind for 1 hour with a sand mill. With the product after grinding, add the coupling agent 201 of 0.008 weight part, the Ciba of 0.011 weight part successively EFKA 3650 additives and 0.008 parts by weight of silicone defoamer, and then dispersed at high speed for 30 ...

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Abstract

The invention relates to a high-build epoxy coal tar pitch anticorrosive coating and a preparation method thereof. The preparation method comprises the following steps of: adding dimethylbenzene, n-butyl alcohol, butanone, coal tar pitch resin liquid, toughened resin, precipitated barium sulfate, silk mica powder, talc powder, a hoof-joint type rheological control aid, a coupling agent 01, a CibaEFKA3650 aid, an organic defoaming agent and poly organic carboxylate into bisphenol A type epoxy resin with medium molecular weight, stirring, dispersing at a high speed, and grinding into a component A; stirring phenolic ammonia, an accelerator, ethanol and a CibaTINUVIN 460 light stabilizer to form a component B; and uniformly mixing the component A and the component B in a ratio of 10:1. The high-build epoxy coal tar pitch anticorrosive coating has certain toughness, and has excellent adhesion, high microbial corrosion resistance, long construction operating period and certain light ageing resistance when applied to prestressed concrete cylinder pipe (PCCP) exterior walls.

Description

technical field [0001] The invention relates to a thick-film epoxy coal tar pitch anticorrosion paint specially used for the outer wall of a PCCP (prestressed steel cylinder concrete pipe) and a manufacturing method thereof. 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 purpose of the present invention is to provide a PCCP outer wall with a certain photoaging resistance and a certain toughness, which can be directly used on the surface of the initial setting concrete with a film-forming dry film thickness ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/02C09D195/00C09D7/12C09D5/08F16L58/10F16L58/12
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 TIANJIN BO XING ENG SCI & TECH LIMITED COMPANY OF CNPC
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