Self-emulsifying epoxy resin emulsion and preparation method and application thereof

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

Active Publication Date: 2020-02-18
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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  • Self-emulsifying epoxy resin emulsion and preparation method and application thereof
  • Self-emulsifying epoxy resin emulsion and preparation method and application thereof
  • Self-emulsifying epoxy resin emulsion and preparation method and application thereof

Examples

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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 a preparation method and application thereof. The self-emulsifying epoxy resin emulsion comprises following raw materials in parts by weight: 100 to 150 parts of epoxy resin, 10 to 20 parts of sorbitan polyoxyethylene ether fatty acid ester, 10 to 20 parts of polyoxyethylene aliphatic alcohol phosphate, 1 to 5 parts of an amine promoter, and 100 to 10000 parts of water. The mass ratio of epoxy resin to sorbitan polyoxyethylene ether fatty acid ester is 1: 0.075-0.18, and the mass ratio of epoxy resin to polyoxyethylene aliphatic alcohol phosphate is 1: 0.07-0.2. The preparation method comprises following steps: carrying out first reactions between epoxy resin and sorbitan polyoxyethylene ether fatty acid ester in the presence of the amine promoter, then carrying out second reactions with polyoxyethylene aliphatic alcohol phosphate, and mixing the reaction product with water. The invention also discloses an applicationof the emulsion in epoxy paints. The provided emulsion can carry out self-emulsifying in the absence of a co-solvent to obtain stable and uniform emulsion. The storage period is long, no VOC is discharged, and after curing, the coating has high toughness and an excellent 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 Applications(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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