Nonionic waterborne epoxy resin emulsion, nonionic waterborne epoxy curing agent, preparation method of nonionic waterborne epoxy resin emulsion and nonionic waterborne epoxy curing agent and waterborne epoxy resin varnish

A water-based epoxy emulsion and non-ionic emulsifier technology, applied in epoxy resin coatings, latex paints, coatings, etc., to achieve the effects of expanding the scope of application, good water resistance, and simple synthesis process

Inactive Publication Date: 2017-07-28
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the synthesis and performance problems of existing water-based epoxy emulsifiers, the invention provides a non-ionic water-based epoxy emulsion and a preparation method thereof

Method used

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  • Nonionic waterborne epoxy resin emulsion, nonionic waterborne epoxy curing agent, preparation method of nonionic waterborne epoxy resin emulsion and nonionic waterborne epoxy curing agent and waterborne epoxy resin varnish
  • Nonionic waterborne epoxy resin emulsion, nonionic waterborne epoxy curing agent, preparation method of nonionic waterborne epoxy resin emulsion and nonionic waterborne epoxy curing agent and waterborne epoxy resin varnish
  • Nonionic waterborne epoxy resin emulsion, nonionic waterborne epoxy curing agent, preparation method of nonionic waterborne epoxy resin emulsion and nonionic waterborne epoxy curing agent and waterborne epoxy resin varnish

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] A kind of nonionic water-based epoxy emulsion, the preparation steps are as follows:

[0068] (1) Preparation of emulsifier

[0069] Add 200.0g polyetheramine L200 (0.10mol, molecular weight 2000g / mol) into a 500ml three-necked round bottom flask equipped with a stirrer and a thermometer, and then heat it to a temperature of 65°C; 78.4g epoxy resin E51 (0.20mol, molecular weight 392g / mol) was dissolved in 70.0g propylene glycol methyl ether, and was added dropwise to the above-mentioned flask through a 125ml constant pressure dropping funnel, and the dropwise addition was completed within 1h, and the stirring reaction was continued for 3h to obtain a light yellow transparent solution with a solid content of 80%. Liquid, non-ionic emulsifier.

[0070] (2) Preparation of epoxy resin emulsion

[0071] In the 500ml three-necked round-bottom flask that is equipped with stirrer, thermometer, add respectively the nonionic emulsifier (solid content is 80%) that 30g step (1) p...

Embodiment 2

[0073] A kind of nonionic water-based epoxy emulsion, the preparation steps are as follows:

[0074] (1) Preparation of emulsifier

[0075] Add 200.0g polyetheramine L200 (0.10mol, molecular weight 2000g / mol) into a 500ml three-necked round bottom flask equipped with a stirrer and a thermometer, and then heat it to a temperature of 65°C; 117.6g epoxy resin E51 (0.30mol, molecular weight 392g / mol) was dissolved in 80.0g propylene glycol methyl ether, and was added dropwise to the above-mentioned flask through a 125ml constant pressure dropping funnel, and the dropwise addition was completed within 1h, and the stirring reaction was continued for 3h to obtain a light yellow transparent mixture with a solid content of 80%. Liquid, non-ionic emulsifier.

[0076] (2) Preparation of epoxy resin emulsion

[0077] In the 500ml three-necked round bottom flask that is equipped with stirrer, thermometer, add respectively the emulsifier (solid content 80%) that 30g step (1) prepares, 84....

Embodiment 3

[0080] The preparation of epoxy emulsion, the epoxy resin that prepares emulsifier and emulsion is identical, and step is as follows:

[0081] Add 20.0g of polyetheramine L200 (0.010mol, molecular weight 2000g / mol) to a 500ml three-necked round-bottomed flask equipped with a stirrer and a thermometer, and then heat to a temperature of 65°C; 149.0g of epoxy resin E51 (0.38mol), Molecular weight 392g / mol) was dissolved in 30.0g propylene glycol methyl ether, and was added dropwise into the above-mentioned flask through a 125ml constant pressure dropping funnel, and the dropwise addition was completed within 1h, and the stirring reaction was continued for 3h.

[0082] Slowly add 108.3 g of deionized water in 5 batches under high-speed stirring, and stir for 40 minutes to obtain a milky white stable epoxy resin emulsion.

[0083] The prepared epoxy resin had a solid content of 55%, a viscosity of 1099 mPas, and a particle size of 382 nm.

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Abstract

The invention discloses a nonionic waterborne epoxy resin emulsion, a nonionic waterborne epoxy curing agent, a preparation method of the nonionic waterborne epoxy resin emulsion and the nonionic waterborne epoxy curing agent and waterborne epoxy resin varnish. Polyether amine has reaction with epoxy resin to form a nonionic emulsifier, and then the nonionic waterborne epoxy resin emulsion is prepared through a phase inversion method; the nonionic waterborne epoxy curing agent matched with the nonionic waterborne epoxy resin emulsion during use is prepared; the prepared waterborne epoxy resin varnish comprises a component A and a component B, the component A is the nonionic waterborne epoxy resin emulsion and a defoaming agent, and the component B is the nonionic waterborne epoxy curing agent. The varnish film of the prepared waterborne epoxy resin varnish has comprehensive performance such as good water resistance, good acid resistance, good alkali resistance and high hardness.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a non-ionic water-based epoxy resin emulsion, a non-ionic water-based epoxy curing agent, a preparation method thereof, and a water-based epoxy resin varnish. Background technique [0002] Traditional solvent-based coatings contain a large amount of organic solvents, which cause great harm to the global environment. In recent years, with the enhancement of people's awareness of environmental protection and ecological protection, water-based coatings have taken up more and more market share, and water-based epoxy resin coatings have also become the focus of research and development. Epoxy resin has good chemical and physical properties, especially because of its excellent water resistance, chemical resistance, excellent adhesion and other characteristics, it is widely used in the field of coatings. [0003] The first is the research on the preparation of wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/02C08G59/64C08G59/50
CPCC08G59/50C08G59/64C09D5/024C09D163/00
Inventor 孙东成李文养
Owner SOUTH CHINA UNIV OF TECH
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