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Water-borne epoxy resin paint and preparation method thereof

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

Active Publication Date: 2013-05-08
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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  • Water-borne epoxy resin paint and preparation method thereof
  • Water-borne epoxy resin paint and preparation method thereof
  • Water-borne epoxy resin paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Mix 20 g of epoxy resin E-44 with 176 g of polyethylene glycol 4000, raise the temperature to 100° C., add 0.1 g of boron trifluoride ether solution dropwise, and react for 5 hours to prepare a macromolecular emulsifier. Add 15g of macromolecular emulsifier to 100g of epoxy resin E-44, stir and mix uniformly at 60℃, then slowly add 120ml of deionized water to the system, stir slowly, and after reverse rotation, stir at high speed for 2h to get the ring Oxygen resin emulsion.

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

Embodiment 2

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

[0055] The performance of the coating is as follows

[0056] Test items

Embodiment 3

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

[0059] The performance of the coating is 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, 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 extensively developed in recent years due to their strong adhesion, good overall performance, and high environmental protection. They have been widely used in the fields of environmental protection, construction, flooring, automobiles, and optical fibers. It has a wide range of applications. At present, waterborne epoxy resin coatings meet the characteristics of low VOC and high environmental protection, but still have the following shortcomings: high brittleness, general impact resistance, and corrosion resistance cannot meet the requirements of environmental applications with higher corrosion resistance. Therefore, the development of a waterborne epoxy resin coating with g...

Claims

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Application Information

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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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