Water-based epoxy antiseptic coating crosslinking agent

Water-based epoxy antiseptic coating crosslinking agent

Epoxy resin has the advantages of excellent mechanical strength, cohesiveness, is widely used in plastics industry, coating industry, one of the thermosetting resin composite materials and other fields.

Which is used for coating in the field of epoxy resin is water-insoluble, more only soluble in acetone, ether, alcohol and other organic solvents, but as people's environmental protection requirement unceasing enhancement, the more the demand and application of waterborne epoxy coatings for more, but the wide application of waterborne epoxy coatings are still subject to the research and development progress of waterborne epoxy resin, in this paper, the preparation of waterborne epoxy emulsion and the performance of anticorrosive coating was studied and discussed.

At present, the preparation methods of water-based epoxy resin are mainly mechanical, reverse, curing and chemical modification. The chemical modification of the water-based epoxy resin emulsion, the particle size is small, the storage stability is good, the application is extensive.

People such as Rbosino and Woo wait for an acrylic monomer to be grafted onto an epoxy skeleton, making it difficult to hydrolyze water-based epoxy. By using acrylic monomers and epoxy resins to copolymerization, it is a good coating for adhesion, flexibility and water resistance.

Tension was prepared by chemical modification such as the stability of siloxane modified epoxy - styrene acrylic composite water dispersion, various monomer on the water dispersion was studied the influence of particle size.

The modified epoxy resin was prepared by using silicone monomer and styrene and methacrylate monomer to modify epoxy resin.

Jiang Fujiang etc by methyl acrylate and vinyl triethoxy silane was carried out on the low molecular weight epoxy resin E - 44 modification, synthesis of organic silicone modified epoxy acrylic photosensitive prepolymer.




Chinese name: Diethyl toluene diamine(DETDA)

Physical and chemical properties: light yellow transparent liquid, slightly soluble in water, soluble in alcohols, ethers, ketones and other polar organic solvents, and polyether, polyester polyol compatibility.

Density 1.022

Viscosity (20 ℃) ??mPa·ss290±10

Pour Point ℃-9

Boiling point of310°C

Flash Point°C161.1°C


Zheng Yun with reactive siloxane as reactive diluent modified, such as VPI epoxy resin, to study the different reactive groups (epoxy, vinyl, or amino siloxane for VPI epoxy resin viscosity, storage stability, etc.

High performance epoxy-organic silicon coating, with polysiloxane and organic oxysilane modified epoxy resin, prepared resin has excellent heat resistance and corrosion resistance.

Prabu etc with hydroxyl-terminated polydimethylsiloxane and polyurethane as modifier, gamma ammonia propyl triethoxy silane as crosslinking agent, the preparation of the mechanical properties, excellent water resistance, high temperature resistance of the modified epoxy resin coating.

On the basis of above research, this paper USES the principle of free radical graft polymerization, with benzoyl peroxide as initiator, through solution polymerization, will be grafted acrylic resin in epoxy resin, the application of organic silicone modified at the same time. Preparation of waterborne epoxy emulsion has significant improvement in the storage stability, the preparation of waterborne epoxy coatings at the same time, the dosage of curing agent and construction conditions, etc, were studied.

Experimental raw materials: bisphenol A epoxy resin, industrial grade; Methacrylic acid, chemical purity; Styrene, chemically pure; Butyl acrylate, chemical purity; Vinyl three (beta-methoxyethyl) silane, chemically pure; Propylene glycol monoethyl ether, chemically pure; Butanol, chemically pure; Benzoyl peroxide (BPO), chemically pure; Auxiliary, industrial grade; Jinhongshi titanium white, industrial grade; Mica powder, industrial grade; Barium sulphate, industrial grade; Curing agent, self-control.

Main equipment and instruments: 500mL four flask, electric mixer, reflux cooling tube, heating sleeve, constant pressure hopper, etc

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Diethyl toluene diamine(DETDA)  http://www.yaruichem.com