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A kind of waterborne epoxy resin paint and preparation method thereof

A water-based epoxy resin and epoxy resin technology, used in epoxy resin coatings, anti-corrosion coatings, coatings, etc., can solve the problems of great harm to humans and the environment, unsatisfactory anti-corrosion performance, general impact resistance, etc. Low cost, excellent storage stability, good impact resistance

Active Publication Date: 2015-08-19
南雄市毅豪化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, although water-based epoxy resin coatings meet the characteristics of low VOC and high environmental protection, they still have the following shortcomings: high brittleness, general impact resistance, and anti-corrosion performance cannot meet the requirements of environments with higher corrosion resistance.
Wang Dewu and others have developed polysulfide rubber modified epoxy resin paint, but because the oil-based paint contains a large amount of organic solvents, the VOC content is high, and it is harmful to humans and the environment. According to the requirements of international regulations for VOC content, oil-based paint gradually eliminated

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Mix 20g of epoxy resin E-44 with 176g of polyethylene glycol 4000, heat up to 100°C, add 0.1g of boron trifluoride ether solution dropwise, and react for 5 hours to obtain a macromolecular emulsifier. Add 15g of macromolecular emulsifier to 100g of epoxy resin E-44, stir and mix evenly at 60°C, then slowly add 120ml of deionized water to the system, stir at a slow speed, and after the phase inversion occurs, stir at a high speed for 2 hours to obtain a cyclo Oxygen emulsion.

[0048] Put 32.2g of triethylenetetramine in a 250ml round-bottomed flask, raise the temperature to 60°C, add dropwise 28g of epoxy resin solution (including 20g of epoxy resin E-51, 8g of diethylene glycol dimethyl ether) under stirring, drop After the addition was completed, react at 65°C for 4h, distill off the solvent and excess triethylenetetramine under reduced pressure, add 13g of n-butyl glycidyl ether dropwise to the system, and react at 75°C for 2h. The solvent was distilled off under re...

Embodiment 2

[0054] Same as Example 1, but the amount of polysulfide rubber emulsion is changed from 10g to 20g.

[0055] The properties of the coating are as follows

[0056] Test items

Embodiment 3

[0058] Same as Example 1, but the amount of polysulfide rubber emulsion was changed from 10g to 30g.

[0059] The properties of the coating are as follows

[0060] Test items

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Abstract

The invention discloses a water-borne epoxy resin paint and a preparation method thereof. The water-borne epoxy resin paint mainly comprises the following components in parts by weight: 100 parts of epoxy resin emulsion, 10-50 parts of water-borne curing agent and 5-40 parts of polysulfide rubber emulsion. The epoxy resin emulsion and the polysulfide rubber emulsion in amounts of the formula are placed in a dispersion machine, dispersion is carried out at the temperature of 10-30 DEG C, the water-borne curing agent in the amount of the formula is added after the emulsions are fully dispersed, and then the dispersion is carried out again, so that the water-borne epoxy resin paint is obtained after full dispersion is completed. The paint provided by the invention has good room temperature storage stability, excellent mechanical property and strong anti-corrosion property and can be applied to the fields such as environmental protection, ships and automobiles; and the preparation method provided by the invention is simple in process and environment-friendly, and quality of a produced film is high, so that the paint provided by the invention has a broad application prospect.

Description

Technical field: [0001] The invention relates to the technical field of epoxy resin coatings, and more specifically, relates to a water-based epoxy resin coating and a preparation method thereof. Background technique: [0002] With the development of science and technology, water-based epoxy resin coatings have been widely developed in recent years because of their strong adhesion, good comprehensive performance, and high environmental protection. a wide range of applications. Although the current water-based epoxy resin coatings meet the characteristics of low VOC and high environmental protection, they still have the following deficiencies: high brittleness, general impact resistance, and anti-corrosion properties that cannot meet the requirements of environments with higher corrosion resistance. Therefore, it is of great scientific significance and economic value to develop a waterborne epoxy resin coating with good toughness, better anti-corrosion performance and excell...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D163/02C09D7/12C09D5/08
Inventor 汪映寒刘斌
Owner 南雄市毅豪化工有限公司
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