A kind of self-emulsifying epoxy resin emulsion and its preparation method and application

A technology of epoxy resin emulsion and epoxy resin, applied in the direction of epoxy resin coating, coating, anti-corrosion coating, etc., can solve the problems of poor storage stability, poor anti-corrosion performance, easy cracking of paint film, etc., and achieve long storage period, Effects of zero VOC emission, excellent paint film toughness and antirust performance

Active Publication Date: 2021-11-19
SUZHOU TAIHU ELECTRIC ADVANCED MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the current epoxy emulsions have some problems: (1) Poor storage stability; (2) High cured film hardness, poor flexibility, and easy cracking of the paint film; (3) Need to add co-solvents to achieve zero VOC (4) Poor anti-corrosion performance and easy to rust, which limit the use of water-based epoxy emulsion

Method used

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  • A kind of self-emulsifying epoxy resin emulsion and its preparation method and application
  • A kind of self-emulsifying epoxy resin emulsion and its preparation method and application
  • A kind of self-emulsifying epoxy resin emulsion and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0047] This example provides a self-emulsifying epoxy resin emulsion, in parts by mass, its raw materials include 100 parts of bisphenol A epoxy resin E-44, 30 parts of bisphenol A epoxy resin E12, 10 parts of Tween 20, 10 parts Parts of polyoxyethylene lauryl ether (n=3) phosphate ester, 5 parts of diethanolamine and 300 parts of deionized water.

[0048] The preparation method is as follows:

[0049] (1) Heat bisphenol A epoxy resin E-44, bisphenol A epoxy resin E12 and Tween 20 to about 120°C, then remove moisture in a vacuum, and protect with nitrogen;

[0050] (2) Diethanolamine is added into the mixed solution of dehydrated bisphenol A epoxy resin E-44, bisphenol A epoxy resin E12 and Tween 20, then the temperature is raised, and the temperature is controlled to react at about 185°C;

[0051] (3) Cool down to about 80°C, add polyoxyethylene lauryl ether (n=3) phosphate to react, then slowly add the reaction product into deionized water under stirring conditions, control...

Embodiment 2

[0053] This example provides a self-emulsifying epoxy resin emulsion, in parts by mass, its raw materials include 100 parts of bisphenol A epoxy resin E-51, 20 parts of bisphenol A epoxy resin E12, 10 parts of Tween 80, 10 parts Parts of polyoxyethylene lauryl ether (n=3) phosphate, 5 parts of diethanolamine and 400 parts of deionized water.

[0054] The preparation method is as follows:

[0055] (1) Heat bisphenol A epoxy resin E-51, bisphenol A epoxy resin E12 and Tween 80 to about 120°C, then remove moisture in a vacuum, and protect with nitrogen;

[0056] (2) Add diethanolamine into the mixed solution of dehydrated bisphenol A epoxy resin E-51, bisphenol A epoxy resin E12 and Tween 80, then heat up, and control the temperature to react at about 185°C;

[0057] (3) Cool down to about 80°C, add polyoxyethylene lauryl ether (n=3) phosphate to react, then slowly add the reaction product into deionized water under stirring conditions, control the temperature of the emulsion to a...

Embodiment 3

[0059] This example provides a self-emulsifying epoxy resin emulsion. In terms of parts by mass, its raw materials include 100 parts of bisphenol A epoxy resin E-44, 30 parts of bisphenol A epoxy resin E12, 10 parts of Tween 60, 15 Parts of lauryl polyoxyethylene ether (AE06) phosphate, 5 parts of diethanolamine and 400 parts of deionized water.

[0060] The preparation method is as follows:

[0061] (1) Heat bisphenol A epoxy resin E-44, bisphenol A epoxy resin E12 and Tween 60 to 110-130°C, then vacuum remove moisture, and protect with nitrogen;

[0062] (2) Diethanolamine is added into the mixed solution of dehydrated bisphenol A epoxy resin E-44, bisphenol A epoxy resin E12 and Tween 60, then heat up, and control the temperature to react at about 185°C;

[0063] (3) Cool down to about 80°C, add lauryl alcohol polyoxyethylene ether (AE06) phosphate to react, then slowly add the reaction product into deionized water under stirring conditions, control the temperature of the ...

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Abstract

The invention discloses a self-emulsifying epoxy resin emulsion and its preparation method and application. The raw materials include 100-150 parts of epoxy resin, 10-20 parts of sorbitan polyoxyethylene ether fatty acid ester, fatty alcohol polyether 10-20 parts of phosphoric acid ester, 1-5 parts of amine accelerator and 100-10000 parts of water; the mass ratio of epoxy resin to sorbitan polyoxyethylene ether fatty acid ester and fatty alcohol polyether phosphate ester is 1: 0.075‑0.18, 1: 0.07‑0.2; preparation: make epoxy resin and sorbitan polyoxyethylene ether fatty acid ester react first in the presence of amine accelerator, and then react with fatty alcohol polyether phosphate Carry out the second reaction, then mix with water to make; And its application in epoxy coating; The present invention can self-emulsify into uniform and stable emulsion without adding co-solvent, has long storage period, no VOC discharge, and becomes After the film, it has excellent paint film toughness and anti-rust performance.

Description

technical field [0001] The invention belongs to the technical field of water-based coatings, and in particular relates to a self-emulsifying epoxy resin emulsion and a preparation method and application thereof. Background technique [0002] Epoxy resin is widely used in construction, wood, hardware, electronic appliances and other industries because of its good bonding performance, high mechanical strength and low curing shrinkage. Traditional epoxy resin paints use organic solvents as diluents, causing direct damage to the environment and the physical and mental health of paint workers. As the requirements for environmental protection are getting higher and higher, traditional epoxy resin coatings can no longer meet the requirements, and there is an urgent need to propose sustainable solutions. [0003] Epoxy emulsion uses water as a solvent, which overcomes the VOC problem caused by organic solvents in traditional epoxy coatings, and at the same time maintains the origin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/65C09D7/63
CPCC08L2205/025C08L2205/035C09D5/08C09D163/00C09D7/63C09D7/65C08L71/02C08L63/00C08K5/521
Inventor 潘德忠张春琪张超徐庆华吴斌崔巍巍邓伟
Owner SUZHOU TAIHU ELECTRIC ADVANCED MATERIAL CO LTD
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