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High temperature-resistant step-cured epoxy paint and application method thereof

A technology of high temperature resistant epoxy paint, applied in the direction of epoxy resin coating, coating, etc., can solve the problems of low curing degree, poor leveling, paint film strength, poor adhesion, etc., to improve interface adhesion performance , Improve high temperature resistance and excellent crack resistance

Active Publication Date: 2013-09-25
广东顺召涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the common low-temperature curing epoxy paint can achieve low-temperature curing, but due to the low degree of curing, the paint film strength and adhesion are poor; while the common high-temperature curing paint obtained by high-temperature curing has high film strength and good adhesion , but due to poor leveling, the paint film will be uneven during the curing and heating process, which seriously affects the quality of the paint film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Preparation of component A:

[0026] The A component is an epoxy resin component, which is composed of the following raw materials in parts by weight: 20 parts of E-20 bisphenol A epoxy resin, 40 parts of E-51 bisphenol A epoxy resin, F-51 phenolic ring 10 parts of epoxy resin, 25 parts of carboxyl-terminated nitrile rubber modified tetraglycidylamine type epoxy resin, 80 parts of aluminum oxide, 10 parts of aluminum nitride, 30 parts of fumed silica, 2 parts of wetting and dispersing agent, Coupling agent KH-560 0.5 part. Each component is mixed evenly in a vacuum mixer, and packed for use;

[0027] The carboxyl-terminated nitrile rubber modified tetraglycidylamine type epoxy resin is made of 25 parts by weight of carboxyl-terminated nitrile rubber and 75 parts by weight of tetraglycidylamine-type polyfunctional epoxy resin, with triphenylphosphine as a catalyst , After reacting at 120°C for 1 hour, a block copolymer with chain mer units of epoxy groups at both en...

Embodiment 2

[0035] 1) Preparation of component A:

[0036] The A component is an epoxy resin component, which is composed of the following raw materials in parts by weight: 25 parts of E-20 bisphenol A epoxy resin, 30 parts of E-51 bisphenol A epoxy resin, F-51 phenolic ring 4 parts of epoxy resin, 25 parts of carboxyl-terminated nitrile rubber modified tetraglycidylamine epoxy resin, 85 parts of aluminum oxide, 10 parts of aluminum nitride, 25 parts of fumed silica, 2 parts of wetting and dispersing agent, Coupling agent KH-560 0.5 part. The components are mixed evenly in a vacuum mixer and packaged for use.

[0037] Described carboxyl-terminated nitrile rubber modified tetraglycidylamine type epoxy resin is by the tetraglycidylamine type polyfunctional epoxy resin of 28 weight parts carboxyl-terminated nitrile rubber and 72 weight parts, with triphenylphosphine as catalyst , After reacting at 130°C for 0.5 hours, a block copolymer with chain mer units of epoxy groups at both ends is f...

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Abstract

The invention discloses a high temperature-resistant step-cured epoxy paint and an application method of the paint. The high temperature-resistant step-cured epoxy paint is obtained by mixing ingredient A, ingredient B and ingredient C in A certain proportion, wherein the ingredient A is an epoxy resin ingredient and comprises E-20 bisphenol A epoxy resin, E-51 bisphenol A epoxy resin, F-51 phenolic aldehyde epoxy resin, carboxylate-terminated nitrile butadiene rubber modified tetraglycidylamine type epoxy resin, aluminum oxide, aluminum nitride, fumed silica, a wetting dispersant, and a coupling agent; the ingredient B is a first curing agent ingredient and comprises an YH-82 epoxy curing agent, a C-1041 anacardol epoxy resin curing agent, DMP-30, fumed silica, and aluminum nitride; and the ingredient C is a second curing agent ingredient and comprises hexahydrophthalic anhydride, fumed silica, and aluminum nitride. The high temperature-resistant step-cured epoxy paint disclosed by the invention can be pre-cured at low temperature, does not form an unsmooth paint film, is cured at a high temperature, and remains the advantages of high strength and good adhesive force of the paint film which is cured at a high temperature.

Description

technical field [0001] The invention relates to a high-temperature-resistant segmented curing epoxy paint and a method for using the same, belonging to the field of special epoxy paints. Background technique [0002] Epoxy paint is a commonly used paint with epoxy resin and curing agent as the main components, combined with suitable additives. The advantage of epoxy paint is that it has strong adhesion to inorganic materials such as cement and metal, and it is very corrosion-resistant. Excellent mechanical properties, wear resistance, impact resistance, organic solvent resistance, heat resistance, water resistance, non-toxic coating, etc. [0003] However, the common low-temperature curing epoxy paint can achieve low-temperature curing, but due to the low degree of curing, the paint film strength and adhesion are poor; while the common high-temperature curing paint obtained by high-temperature curing has high film strength and good adhesion , but due to poor leveling, the p...

Claims

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Application Information

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IPC IPC(8): C09D163/02C09D163/04C09D163/00C09D7/12
Inventor 刘娟娟
Owner 广东顺召涂料有限公司
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