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Water-based epoxy resin paint and preparation method thereof

A water-based epoxy resin and epoxy resin technology, applied in the direction of epoxy resin coatings, coatings, etc., can solve the problems of general impact resistance, high brittleness, unsatisfactory anti-corrosion performance, etc., and achieve good film-forming performance and mechanical mechanical properties. The effect of good performance and excellent storage stability

Inactive Publication Date: 2015-10-07
何肖凤
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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.

Method used

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  • Water-based epoxy resin paint and preparation method thereof
  • Water-based epoxy resin paint and preparation method thereof
  • Water-based epoxy resin paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Mix 20g of octylphenol polyoxyethylene ether with 100g of polyoxyethylene sorbitan monolaurate, heat up to 70°C, add 0.1g of sodium lauryl sulfate dropwise, and stir for 4 hours under nitrogen protection to prepare Get an emulsifier. Under a 6000r / min high shear machine, add 15g of emulsifier and 5g of propylene glycol methyl ether to 100g of epoxy resin E-51, mix well, and add 120mL of deionized water dropwise to the system while stirring at 70°C until The system changed from water-in-oil to oil-in-water, and then stirred and reacted for 2 hours to obtain a water-based epoxy resin emulsion.

[0052]Put 32.2g of triethylenetetramine in a 250mL round bottom flask, raise the temperature to 60°C, add 28g of epoxy resin solution dropwise under stirring (including 20g of epoxy resin E-51, 8g of diethylene glycol dimethyl ether), drop After the addition was completed, react at 65°C for 4h, then add 13g of n-butyl glycidyl ether dropwise to the system, and react at 80°C for 2...

Embodiment 2

[0057] Same as Example 1, but the amount of water-based epoxy resin curing agent is changed from 30g to 25g.

[0058] The properties of the coating are as follows:

[0059]

Embodiment 3

[0061] Same as Example 1, but the amount of water-based epoxy resin curing agent is changed from 30g to 20g.

[0062] The properties of the coating are as follows:

[0063]

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Abstract

The invention discloses a water-based epoxy resin paint and a preparation method thereof. The water-based epoxy resin paint comprises a water-based epoxy resin emulsion, a water-based epoxy resin curing agent, a pigment, a filler, a leveling agent, a defoaming agent, a wetting agent, a thickener, a pigment dispersing agent and a film-forming assistant. The preparation method comprises the following steps: uniformly stirring the film-forming assistant, thickener, pigment dispersing agent, defoaming agent and wetting agent in a high-speed dispersion machine at 10-30 DEG C, adding the pigment and filler, sufficiently dispersing, adding the epoxy resin emulsion, stirring uniformly, adding the leveling agent, sufficiently dispersing, adding the water-based curing agent according to the formula amount, and dispersing to obtain the water-based epoxy resin paint. The paint disclosed by the invention has the advantages of favorable room-temperature storage stability, excellent mechanical properties and high corrosion resistance, and can be used in the fields of environmental protection, ships, automobiles and the like. The method has the advantages of simple technique, environment friendliness, high coated film quality and wide application prospects.

Description

technical field [0001] The invention relates to the technical field of epoxy resin coatings, more specifically, to a water-based epoxy resin coating and a preparation method thereof. Background technique [0002] Water-soluble coatings use water as a solvent, have extremely low VOC content, and have no pollution to the environment. Therefore, replacing solvent-based coatings with water-based coatings is the current development trend of the coatings industry. However, solvent-based coatings volatilize more than 2 million tons of VOC per year, which is more destructive to the environment. Therefore, research on water-based coatings can not only bring economic benefits, but also benefit the protection of the environment. However, the current market share of water-based coatings in my country is relatively low. Consumers have insufficient knowledge of water-based coatings, and their concept of use is not strong. There is a long way to go. [0003] With the development of scienc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/12
Inventor 何肖凤
Owner 何肖凤
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