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Aqueous epoxy resin curing composition and preparation method thereof

A water-based epoxy resin and epoxy resin technology, applied in the field of cured products and their preparation, can solve problems such as limited application and complex synthesis process, and achieve the effects of shortening time, simple preparation process and increasing toughness

Inactive Publication Date: 2017-08-29
沈阳百辰化学科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the synthesis process of α-amino-ω-alkyl ether is very complicated, which limits its application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Preparation of water-based epoxy curing agent

[0031]Among the components required for the preparation of water-based epoxy resin curing agents, the organic solvent and diluent are all selected from propylene glycol methyl ether, the polyvalent epoxy long-chain compound is selected from polyethylene glycol diglycidyl ether, and the polyvalent polyamine is selected from triethylenetetramine , Epoxy resin selection 828. The preparation process of the water-based epoxy resin curing agent is as follows: Add 70ml of propylene glycol methyl ether into a 500ml four-necked bottle equipped with a condenser tube and a stirring paddle, start stirring, and add 0.4mol of triethylenetetramine into the four-necked bottle under nitrogen protection middle. The stirring speed is 550r / min, the water bath is used for heating, and the temperature is set at 60°C. When the temperature reached the set value, 0.2 mol of polyethylene glycol diglycidyl ether was added dropwise at a rate of ...

Embodiment 2

[0037] 1. Preparation of water-based epoxy curing agent

[0038] Among the components required for the preparation of water-based epoxy resin curing agents, the organic solvent and diluent are all selected from propylene glycol methyl ether, the polyvalent epoxy long-chain compound is selected from polypropylene glycol diglycidyl ether, the polyvalent amine is selected from tetraethylenepentamine, epoxy Resin selects 828 for use. The preparation process of the water-based epoxy resin curing agent is as follows: add 70ml of propylene glycol methyl ether into a 500ml four-necked bottle equipped with a condenser tube and a stirring paddle, start stirring, and add 0.4mol of tetraethylenepentamine into the four-necked bottle under nitrogen protection middle. The stirring speed is 550r / min, the water bath is used for heating, and the temperature is set at 60°C. When the temperature reached the set value, 0.2 mol of polypropylene glycol diglycidyl ether was added dropwise at a rate...

Embodiment 3

[0044] 1. Preparation of water-based epoxy resin curing agent

[0045] Among the components required for the preparation of water-based epoxy resin curing agents, the organic solvent and diluent are all selected from propylene glycol ether, the polyvalent epoxy long-chain compound is selected from polyethylene glycol propylene glycol block diglycidyl ether, and the polyvalent polyamine is selected from triethylene Tetramine, epoxy resin choose 828. The preparation process of waterborne epoxy resin curing agent is as follows:

[0046] Add 70ml of propylene glycol methyl ether into a 500ml four-necked flask equipped with a condenser tube and a stirring paddle, start stirring, and add 0.4mol of triethylenetetramine into the four-necked flask under nitrogen protection. The stirring speed is 550r / min, the water bath is used for heating, and the temperature is set at 60°C. When the temperature reaches the set value, start to drop 0.2 mol of polyethylene glycol propylene glycol blo...

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Abstract

The invention provides an aqueous epoxy resin curing composition and a preparation method thereof and relates to resin curing compositions and preparation methods thereof. The aqueous epoxy resin curing composition is prepared from the ingredients in percentage by mass: 21% to 39% of curing agent, 19% to 37% of epoxy resin and 35% to 55% of deionized water, wherein the curing agent is prepared through subjecting polyamine to chain extension by a polybasic epoxy long-chained compound and epoxy resin and carrying out modifying and terminating synthesis, the mole ratio of the polybasic epoxy long-chained compound to the polyamine is 1: (1.2 to 4), and the mole ratio of the epoxy resin to polyethylene polyamine is 1:(1.2 to 4). The aqueous epoxy resin curing composition is obtained through uniformly mixing 21% to 39% by mass of self-emulsifying aqueous epoxy resin curing agent, 19% to 37% by mass of epoxy resin and 35% to 55% by mass of deionized water. Preparation processes of the aqueous epoxy resin curing agent and the aqueous epoxy resin composition are simple and convenient and are pollution-free to environments, and physicochemical properties such as hardness and gloss are excellent.

Description

technical field [0001] The invention relates to a cured product and a preparation method thereof, in particular to a water-based epoxy resin curing composition and a preparation method thereof. Background technique [0002] Traditional solvent-based epoxy resin film-forming agents have the advantages of good adhesion, small shrinkage, excellent mechanical properties, acid and alkali resistance, and wear resistance, but because they contain a large amount of volatile organic solvents (such as: VOC), therefore , has the disadvantages of endangering the safety of operators and serious environmental pollution. Water-based epoxy resin film formers not only have the advantages of traditional solvent-based epoxy resin film formers, but also meet environmental protection requirements. Therefore, they have become the development trend of the coatings industry. [0003] Patent CN1752163A discloses a preparation method of water-based epoxy resin coating, wherein the water-based epoxy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08G59/50
CPCC08L63/00C08G59/5006C08G59/5033C08G59/504C08L2205/025
Inventor 王家良
Owner 沈阳百辰化学科技有限公司
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