Anticorrosive paint under thermal insulation layer, application of anticorrosive paint, coating process and anticorrosive coating

A coating process and coating technology, used in anti-corrosion coatings, coatings, epoxy resin coatings, etc., can solve the problems of expanding the temperature range of coating coating and coating use temperature range, eliminating economic losses, reducing variety requirements, The effect of improving versatility

Active Publication Date: 2021-11-19
CNOOC CHANGZHOU PAINT & COATINGS IND RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to expand the coating temperature range of the coating and the service temperature range of the coating, especially to solve the coating problem on the surface of the high-temperature substrate

Method used

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  • Anticorrosive paint under thermal insulation layer, application of anticorrosive paint, coating process and anticorrosive coating
  • Anticorrosive paint under thermal insulation layer, application of anticorrosive paint, coating process and anticorrosive coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Preparation of component A: 16 parts of phenol ketone epoxy resin, 4 parts of modified epoxy resin, 8 parts of bisphenol A novolac epoxy resin, 0.2 part of wetting and dispersing agent, 0.8 part of defoamer, thixotropic agent 0.5 parts, 20 parts of alumina, 30 parts of silicon carbide, 6 parts of non-leafing aluminum powder slurry, 2 parts of epoxy graphene slurry, 1 part of amino resin, mixed solvent (xylene: No. 1000 solvent: DBE: butanol =3:3:2:3.5) 11.5 parts.

[0028] (2) Preparation of component B: 76 parts of modified m-xylylenediamine, 21 parts of ketone solvent (isophorone: methyl isobutyl ketone = 4:10), 3 parts of KH-792 aminosilane adhesion .

[0029] (3) Mix component A and component B at a mass ratio of 6:1.

Embodiment 2

[0031] (1) Preparation of component A: 12 parts of phenol ketone epoxy resin, 5 parts of modified epoxy resin, 6 parts of bisphenol A novolac epoxy resin, 0.3 parts of wetting and dispersing agent, 0.6 parts of defoaming agent, thixotropic agent 0.6 parts, 16 parts of alumina, 28 parts of silicon carbide, 2 parts of non-leafing aluminum powder slurry, 12 parts of flake iron oxide, 1.5 parts of epoxy graphene slurry, 1.5 parts of amino resin, mixed solvent (xylene: 1000 No. solvent: DBE:butanol=4.5:3:3:4) 14.5 parts.

[0032] (2) Preparation of component B: 73 parts of styrene-modified m-xylylenediamine, 23.5 parts of ketone solvent (isophorone: methyl isobutyl ketone = 5:8), KH-792 aminosilane adhesion 3.5 servings.

[0033] (3) Mix components A and B with a mass ratio of 7:1.

Embodiment 3

[0035] (1) Preparation of component A: 10 parts of phenol ketone epoxy resin, 6 parts of modified epoxy resin, 4 parts of bisphenol A novolac epoxy resin, 0.4 part of wetting and dispersing agent, 0.4 part of defoaming agent, thixotropic agent 0.7 parts, 14 parts of aluminum oxide, 32 parts of silicon carbide, 14 parts of flake iron oxide, 1 part of epoxy graphene slurry, 2 parts of amino resin, mixed solvent (xylene: No. 1000 solvent: DBE: butanol=4.5 :3:3:5) 15.5 servings.

[0036] (2) Preparation of component B: 72 parts of styrene-modified m-xylylenediamine, 24 parts of ketone solvent (isophorone: methyl isobutyl ketone = 4:8), KH-792 aminosilane adhesion 4 parts.

[0037] (3) Mix component A and component B at a mass ratio of 8:1.

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Abstract

The invention belongs to the technical field of paint chemical industry, and relates to anticorrosive paint under a thermal insulation layer, application of the anticorrosive paint, a coating process and an anticorrosive coating. The anticorrosive paint comprises a component A and a component B which are packaged separately, wherein the component B comprises a complex generated by carrying out reversible reaction on a ketone solvent and an amine curing agent; when the component A and the component B are mixed, the complex is subjected to reverse reaction to gradually release the amine curing agent, so that the amine curing agent is subjected to curing reaction with an epoxy group in the component A. The paint not only has excellent corrosion resistance under the thermal insulation layer, but also has certain low surface tolerance, and can directly coat the surface of a high-temperature equipment pipeline on the premise of maintenance without shutdown, and the use temperature range of the coating can be improved.

Description

technical field [0001] The invention belongs to the technical field of coating chemical industry, and in particular relates to an anti-corrosion coating under an insulation layer, an application thereof, a coating process and an anti-corrosion coating. Background technique [0002] In the petrochemical industry, due to energy saving and process design considerations, most equipment and pipelines need to adopt thermal insulation measures. However, corrosion under insulation (CUI) problems will occur during the operation of equipment and pipelines; especially for enterprises in coastal areas, CUI problems are more prominent, and corrosion leakage may even occur in severe cases, leading to unplanned shutdowns and seriously threatening the safety and stability of devices Long-term operation affects the economic benefits and safety production of enterprises. Corrosion under the insulation layer refers to the steel structure pipelines, storage tanks or equipment with high tempera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D163/04C09D7/20C09D5/08C09D7/61C09D7/47C08G59/50B05D7/24B05D5/00
CPCC09D163/00C09D7/20C09D5/08C09D7/61C09D7/47C08G59/5033B05D7/24B05D5/00C08L2201/08C08K2003/2227C08L63/04C08L61/20C08K3/22C08K3/34C08K3/042Y02P20/10
Inventor 方健君李敏狄志刚徐科沈雪锋王秀娟张伟丽王清海廉兵杰许洋马胜军
Owner CNOOC CHANGZHOU PAINT & COATINGS IND RES INST
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