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A kind of high-corrosion and environment-friendly water-based epoxy curing agent and preparation method thereof

A water-based epoxy and curing agent technology, used in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of poor comprehensive performance and general anti-corrosion performance

Active Publication Date: 2022-07-26
广州惠顺新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a high anti-corrosion and environment-friendly water-based epoxy curing agent and its preparation in order to solve the technical problem that the epoxy coating system composed of the existing water-based epoxy curing agent has general anti-corrosion performance and poor comprehensive performance. method

Method used

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  • A kind of high-corrosion and environment-friendly water-based epoxy curing agent and preparation method thereof
  • A kind of high-corrosion and environment-friendly water-based epoxy curing agent and preparation method thereof
  • A kind of high-corrosion and environment-friendly water-based epoxy curing agent and preparation method thereof

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Embodiment 1

[0024] The present embodiment provides a water-based epoxy curing agent with high anticorrosion and environmental protection. The components of the curing agent and the quality of each component are as follows:

[0025]

[0026] In the present embodiment, the epoxy value of bisphenol A epoxy resin is 0.48, the molecular weight of polyethylene glycol is 4000, and the mass ratio of isophorone diamine and diethylene triamine in the composite crosslinking agent is 6.5: 1.

[0027] The present embodiment also provides a method for preparing a highly anti-corrosion and environment-friendly water-based epoxy curing agent, comprising the following steps:

[0028] (1) under normal temperature and normal state, take by weighing the bisphenol A epoxy resin of 5 grams and the diethylene glycol butyl ether of 3 grams respectively and mix, and stir and dissolve;

[0029] (2) take by weighing 45 grams of molten polyethylene glycol and add it to the first container, then add the material ...

Embodiment 2

[0033] The present embodiment provides a water-based epoxy curing agent with high anticorrosion and environmental protection. The components of the curing agent and the quality of each component are as follows:

[0034]

[0035] In the present embodiment, the epoxy value of bisphenol A epoxy resin is 0.5, the molecular weight of polyethylene glycol is 5000, and the mass ratio of isophorone diamine and diethylenetriamine in the composite crosslinking agent is 3.3: 1.

[0036] The present embodiment also provides a method for preparing a highly anti-corrosion and environment-friendly water-based epoxy curing agent, comprising the following steps:

[0037] (1) under normal temperature and normal state, respectively take by weighing 10 grams of bisphenol A epoxy resin and 5 grams of ethylene glycol tert-butyl ether and mix, and stir and dissolve;

[0038] (2) take by weighing 40 grams of molten polyethylene glycol and add in the first container, then add the material in step (...

Embodiment 3

[0042] The present embodiment provides a water-based epoxy curing agent with high anticorrosion and environmental protection. The components of the curing agent and the quality of each component are as follows:

[0043]

[0044] In the present embodiment, the epoxy value of bisphenol A epoxy resin is 0.53, the molecular weight of polyethylene glycol is 6000, and the mass ratio of isophorone diamine and diethylenetriamine in the composite crosslinking agent is 2: 1.

[0045] The present embodiment also provides a method for preparing a highly anti-corrosion and environment-friendly water-based epoxy curing agent, comprising the following steps:

[0046] (1) under normal temperature and normal state, take by weighing the bisphenol A epoxy resin of 15 grams and the ethylene glycol tert-butyl ether of 8 grams respectively and mix, and stir and dissolve;

[0047] (2) take by weighing 35 grams of molten polyethylene glycol and add it to the first container, then add the material...

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Abstract

The invention discloses a highly anti-corrosion and environment-friendly water-based epoxy curing agent and a preparation method thereof. The components of the water-based epoxy curing agent, calculated in mass percentage, are: 5-15% of bisphenol A epoxy resin, alcohol ether 3% to 8% of quasi-solvent, 35 to 45% of polyethylene glycol, 0.002 to 0.01% of catalyst, 28 to 32% of compound cross-linking agent and 11 to 18% of reactive diluent. Isophorone diamine and diethylene triamine in a ratio of 2 to 6.5:1. The water-based epoxy curing agent provided by the invention can effectively improve the corrosion resistance of the coating.

Description

technical field [0001] The invention belongs to the field of water-based coatings, and more particularly, relates to a highly anti-corrosion and environment-friendly water-based epoxy curing agent and a preparation method thereof. Background technique [0002] Water-based epoxy resin refers to the preparation of a stable dispersion system by dispersing epoxy resin in water in the form of particles, droplets or colloids. The more widely used waterborne epoxy resin with curing agent is used as a coating. Waterborne epoxy resin coatings are widely used in anti-corrosion. Anti-corrosion coatings are generally divided into conventional anti-corrosion coatings and heavy-duty anti-corrosion coatings, which are an indispensable coating in paint coatings. Conventional anti-corrosion coatings play an anti-corrosion effect on metals under normal conditions and protect the service life of non-ferrous metals; heavy-duty anti-corrosion coatings refer to relatively harsh corrosive environ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L71/02C08L63/00C08G59/50C09D163/00C09D163/02C09D5/08C09D7/65
CPCC08L71/02C08G59/5026C08G59/5006C09D163/00C09D5/08C09D7/65C08L2205/025C08L2205/03C08L63/00
Inventor 何志威倪青青
Owner 广州惠顺新材料有限公司
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