High-temperature ceramic organosilicon-phenolic epoxy anticorrosive paint and preparation method thereof

A technology of phenolic epoxy and high-temperature ceramics, which is applied in the field of coatings, can solve the problems of inability to meet the corrosion protection requirements of metal substrates, low adhesion of metal substrates, and poor corrosion resistance, and achieve improved interface compatibility and improved Effect of ceramicization and improvement of salt spray resistance time

Active Publication Date: 2017-06-27
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, silicone resin has very low adhesion to metal substrates and poor corrosion resistance, which cannot meet the corrosion protection requirements for metal substrates in normal temperature corrosive environments.

Method used

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  • High-temperature ceramic organosilicon-phenolic epoxy anticorrosive paint and preparation method thereof
  • High-temperature ceramic organosilicon-phenolic epoxy anticorrosive paint and preparation method thereof
  • High-temperature ceramic organosilicon-phenolic epoxy anticorrosive paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Add 100 grams of amino-terminated methyl silicone resin, 1000 grams of epoxy equivalent 185 to 195 (g.mol) in the reaction device -1 ) phenol-type novolac epoxy resin, 5 grams of tetrabutyl titanate, and 3000 grams of acetone were reacted at room temperature for 12 hours to prepare a silicone-novolac epoxy resin, and the acetone was distilled off and sealed for storage.

[0040] Put 100 grams of silicone-phenolic epoxy resin, 60 grams of low-melting glass, 20 grams of silicon dioxide, 50 grams of organic montmorillonite, 100 grams of asbestos powder, 70 grams of vermiculite powder, 30 grams of 3-shrink Glyceryl ether oxypropyl triethoxysilane, 0.05 g of defoamer, 0.05 g of leveling agent, 0.05 g of thickener, 0.05 g of adhesion promoter, 21 g of xylene, and 7 g of n-butanol are evenly mixed by stirring Afterwards, use paint grinding equipment to process for 120 minutes, filter through a 100-mesh screen to obtain component A of the paint, and pour it into a can for stora...

Embodiment 2

[0042] Add 100 grams of hydroxyl-terminated phenyl silicone resin, 5 grams of epoxy equivalent 215-230 (g.mol -1 ) phenol novolac epoxy resin and 0.05 g of dibutyltin dilaurate were reacted at 200° C. for 0.5 hour to prepare a silicone-novolak epoxy resin and seal it for storage.

[0043]In a clean container, 100 grams of silicone-phenolic epoxy resin, 10 grams of low-melting glass, 10 grams of silicon dioxide, 10 grams of organic montmorillonite, 0.5 grams of 3-glycidyl etheroxypropyl trimethoxysilane, 5 grams of antioxidant, 5 grams of anti-skinning agent, and 5 grams of leveling agent are stirred evenly and mixed, then treated with paint grinding equipment for 10 minutes, filtered through a 120-mesh screen to obtain component A of the paint, and poured into a can for storage . Then add 1 gram of triethylenetetramine to component A of the paint and stir evenly, then apply the paint on the surface of the metal test piece with a brush, and cure it at room temperature for one ...

Embodiment 3

[0045] Add the methyl organosilicon resin of 100 gram terminal ethoxy groups, 50 gram epoxy equivalents 176-181 (g.mol -1 ) phenol novolac epoxy resin, 0.5 g of tetraisopropyl titanate, and 180 g of cyclohexanone were reacted at 50° C. for 12 hours to prepare a silicone-novolac epoxy resin, and the cyclohexanone was distilled off and sealed for storage.

[0046] Put 100 grams of silicone-phenolic epoxy resin, 30 grams of low melting point glass, 8 grams of silicon dioxide, 50 grams of organic montmorillonite, 10 grams of asbestos powder, 10 grams of vermiculite powder, 13 grams of 3-shrink Glyceryl ether oxypropylmethyl dimethoxysilane, 0.05g defoamer, 0.05g leveling agent, 0.05g thickener, 0.05g adhesion promoter, 10g isopropanol, 5g butyl acetate, After mixing evenly, use paint grinding equipment for 60 minutes, and filter through a 180-mesh screen to obtain component A of the paint, which is poured into cans for storage. Then add 12 grams of tetraethylenepentamine to compo...

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Abstract

The invention belongs to the technical field of paints, and particularly relates to a high-temperature ceramic organosilicon-phenolic epoxy anticorrosive paint and a preparation method thereof. The paint is characterized in that organosilicon-phenolic epoxy resin is synthesized through a chemical grafting method, and the resin simultaneously has an organosilicon chain segment and a phenolic epoxy chain segment. On the one hand, the resin has the characteristics of heat resistance, weather resistance, wear resistance, flexibility and the like of the organosilicon chain segment, the phenolic epoxy chain segment on the resin molecule has a higher metal base material adhesive force than the organosilicon chain segment, and the corrosion resistance effect after the phenolic epoxy chain segment is crosslinked with a curing agent is higher than that of the organosilicon chain segment, thereby solving the problems of low adhesive force and poor anticorrosive effect of the organosilicon paint; and on the other hand, the carbon residue rate of the phenolic epoxy chain segment in a high-temperature environment is high, and the phenolic epoxy chain segment and a thermal degradation product of the organosilicon chain segment in the high-temperature environment can form secondary film forming action, thereby improving the ceramic effect of a coating in the high-temperature environment.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a high-temperature ceramic silicone-phenolic epoxy anticorrosion coating and a preparation method thereof. Background technique [0002] Ceramic organic coating is a coating system that uses organic polymers and curing agents as film-forming substances, and adds high-temperature ceramic fillers and additives. Ceramic organic coatings can be produced using conventional coating equipment. After coating and curing , forming a protective coating. After the coating is subjected to high temperature, flame ablation, etc., it will quickly form a hard shell, which is fire-resistant and heat-resistant like ceramics, thus protecting the coated object. [0003] Silicone resin is often used as the film-former of ceramic organic coatings, mainly because silicone resin not only has the characteristics of heat resistance, weather resistance, wear resistance, flexibility, etc., but ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/12
CPCC08K3/346C08K3/36C08K3/40C08K9/06C08K13/06C08K2201/014C09D5/08C09D7/40C09D7/61C09D7/62C09D7/70C09D163/00
Inventor 吴航王福会朱圣龙
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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