Shanghai tongji university researchers recently invented a new type of waterborne epoxy resin coating, it by epoxy resin emulsion and waterborne epoxy resin curing agent of two components, it has good stability and abrasion resistance, and suitable for long period, the film high hardness.
Epoxy resin coating is a high-performance coatings, should have a very wide range. It has many advantages, including with all kinds of grassroots have very forced adhesion, the coating hardness, have very good resistance to water and chemical resistance, good wear resistance and can be used as the ground paint, metal anticorrosion primer, Marine coatings, etc. But now most of the epoxy resin coating for solvent coating contains a large amount of can be volatile organic compounds (voc), toxic, flammable, therefore cause damage to the environment and to the human body. Along with the requirements for protection of the environment is increasing day by day, to reduce voc even excluding voc coating of the backlash.
Tongji university new waterborne epoxy resin coating invention
This new type of waterborne epoxy resin coating for high-performance bi-component paint, by epoxy resin emulsion and waterborne epoxy resin curing agent two composition. Which epoxy resin emulsion by epoxy resin of the reactive emulsifiers emulsion preparation for, the dosage of reactive emulsifiers for epoxy resin weight 10 ~ 18%, more appropriate dosage 12 to 15%. Reaction by epoxy resin and emulsifier surface activity of polyether glycol acid catalysts in the presence of Louis reacts, respectively, and the base of the polymer hydroxyl epoxy type emulsifier, solid content for 40 ~ 60%; One of the epoxy resin for bisphenol a type of low molecular weight or high molecular weight epoxy resin, polyether glycol including polyethylene glycol (peg), poly propylene glycol, get together butanol or its copolymer, etc. Waterborne epoxy resin curing agent is by more was the ethylene via sealing, addition, salt process modification and get into the water-soluble curing agent.
