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A kind of polyimide waterborne epoxy paint and preparation method thereof

A polyimide water-based and epoxy coating technology, used in the coating field, can solve the problems of poor performance and limited types of water-based epoxy resin coating resins, achieve strong water resistance, improve anti-floating and blooming properties, improve The effect of water resistance

Active Publication Date: 2022-04-29
成都普利美特科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it can be better emulsified and used, and the types of resins used to make water-based epoxy resin coatings are limited, and the performance of water-based epoxy coatings is worse than that of conventional epoxy coatings.

Method used

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  • A kind of polyimide waterborne epoxy paint and preparation method thereof
  • A kind of polyimide waterborne epoxy paint and preparation method thereof
  • A kind of polyimide waterborne epoxy paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Prepare polyimide aqueous epoxy resin, the method is as follows:

[0040] (1) Add 1 mol of 1-amino-3-chloro-2-propanol hydrochloric acid and 1 mol of chlorosuccinic acid into NaOH aqueous solution (sodium hydroxide concentration 0.5 mol / L, dosage 1 L), stir and react at room temperature for 1 h, Solution I was prepared.

[0041] (2) Add 1 mol of disodium ethylene glycol and 1 mol of 3,5-dichlorobenzenesulfonic acid into NaOH aqueous solution (sodium hydroxide concentration 0.5 mol / L, dosage 1 L), stir and react at room temperature for 0.5 h to obtain Solution II.

[0042] (3) The solution I, the solution II and 1 mol of 3-chloro-5-epoxymethylbenzenesulfonic acid were mixed and stirred for 3 hours to prepare a polyimide water-based epoxy resin.

Embodiment 2

[0044] Prepare polyimide aqueous epoxy resin, the method is as follows:

[0045] (1) Add 1 mol of 1-amino-3-chloro-2-propanol hydrochloric acid and 1 mol of chlorosuccinic acid into NaOH aqueous solution (sodium hydroxide concentration 0.5 mol / L, dosage 1 L), stir and react at 40°C for 1 h , to prepare solution I.

[0046] (2) Add 20 mol of disodium ethylene glycol and 20 mol of 3,5-dichlorobenzenesulfonic acid into NaOH aqueous solution (sodium hydroxide concentration 0.5 mol / L, dosage 20 L), stir and react at 40°C for 0.5 h to prepare Solution II was obtained.

[0047] (3) Mix solution I, solution II with 1 mol of 3-chloro-5-epoxymethylbenzenesulfonic acid, stir and react at 40° C. for 3 hours to prepare a polyimide water-based epoxy resin.

Embodiment 3

[0049] A kind of polyimide water-based epoxy coating, comprises the component of following mass percentage: 50 parts of polyimide water-based epoxy resins of bisphenol A type epoxy resin, embodiment 1 preparation, 0.5 part of ethylenediamines , 1 part of Lewis acid, 1 part of BYK-3101, 0.1 part of sodium oleate, 1 part of GPE type defoamer, 5 parts of titanium dioxide, 8 parts of molybdenum chrome orange, 20 parts of calcium carbonate, 30 parts of mica powder, and 50 parts of water.

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PUM

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Abstract

The invention discloses a polyimide water-based epoxy coating, which comprises the following components by weight: 10 parts of water-based epoxy resin, 50-100 parts of polyimide water-based epoxy resin, and 0.5-2 parts of curing agent , 0.5-2 parts of leveling agent, 0.1-1 part of dispersant, 0.2-2 parts of defoamer, 10-20 parts of pigment, 10-100 parts of filler, 50-100 parts of water; the polyimide water-based ring The preparation method of oxygen resin is as follows: (1) 1-amino-3-chloro-2-propanol hydrochloric acid and chlorosuccinic acid were reacted in alkaline aqueous solution for 1h to obtain solution I; (2) ethylene glycol di Sodium and 3,5-dichlorobenzenesulfonic acid were reacted in alkaline aqueous solution for 0.5h to obtain solution II; (3) Mix solution I, solution II and 3-chloro-5-epoxytoluenesulfonic acid React for 3h to prepare polyimide water-based epoxy resin. The coating of the invention has the advantages of high chemical stability, low construction environment requirements, environmental protection and non-toxicity, high water resistance of cured products, etc., and has outstanding promotion prospects.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a polyimide water-based epoxy coating. Background technique [0002] The excellent physical, mechanical and electrical insulation properties of epoxy resin, the bonding performance with various materials, and the flexibility of its use process are not available in other thermosetting plastics. Therefore, it can be made into coatings, composite materials, casting materials, adhesives, molding materials and injection molding materials, and is widely used in various fields of the national economy. Epoxy resins are non-toxic and are actually non-toxic products. However, most epoxy resin coatings are solvent-based coatings at present, which contain a large amount of volatile organic compounds (voc), which are toxic and flammable, thus causing harm to the environment and human body. When the voc in the environment exceeds a certain concentration, people will feel headache, nausea, v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D163/02C09D167/08C09D7/61C09D7/20C08G59/04
CPCC09D163/00C09D7/61C09D7/20C08G59/04C08L2205/025C08K2003/265C08K2201/014C08L63/00C08K3/26C08K3/34C08K3/346C08L67/08
Inventor 毛金成张海燕张华梁
Owner 成都普利美特科技有限公司
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