Traditional solvent-based paints contain a large number of volatile organic compounds (Volatile organic Compound or VOC), will cause serious air pollution, environmental awareness growing in today's environment-friendly paint increasingly shows its importance. Environmental protection wider prospect epoxy coating, epoxy resin, according to Chinese experts, industry associations which include epoxy powder coatings and epoxy coatings, including epoxy powder coating and steel substrate in the coating corrosion aspects of thermal , waterborne epoxy coating with paint in cans and in particular, anti-corrosion coatings applied widely, these two kinds of prospects the impression that accelerate the development of green products is the time. In addition to reducing VOC powder coating area, the epoxy coating is also environmentally friendly water-based coating of the direction of development of; but relatively large number of aromatic epoxy resin properties are poor lightfastness, so much for waterborne epoxy coatings primer, anti-corrosion paint.
Cured epoxy resin has excellent physical and chemical properties, especially good water resistance, chemical resistance, excellent adhesion properties and are widely used in coatings, the coatings industry is one of the products in the pillar, so environmentally friendly epoxy resin paint coating industry is currently one of the focus. Way to achieve low VOC mainly focus on high-solids coatings, waterborne coatings, powder coatings and radiation curable coatings and other new type of coating, epoxy powder coating is an effective material to achieve this goal. China Epoxy Resin Industry Association, said experts, epoxy powder coating to bisphenol A type epoxy resin, phenolic resin modified linear aliphatic epoxy resin and epoxy resin as its main body, at a certain temperature, mixing cooling formed after the smash. It is pollution-free, low melt viscosity, the coating is firm, good leveling, no primer coating, mechanical performance is good, excellent reaction activity and storage stability, corrosion resistance, chemical resistance, paint color good, curing agent wide range from wide range of applications
At present, the epoxy powder coating of hot main substrate for heat-sensitive paint and anticorrosive coatings, which for thermal epoxy powder coating the substrate are mainly: UV curing epoxy powder coating, low temperature curing epoxy powder coating . As the powder curing temperature is high (180 ~ 220 ), curing time length (10 ~ 30min), so that it can only be used in metal heat-resistant substrate, and the relative energy consumption, time-consuming; and peace because of its melt flow curing the beginning of a certain overlap, control the bad, the coating will appear on the smoothness of defects such as cratering, orange peel and so on. This one focuses on the development of UV curing powder coating and low temperature curing powder coatings for heat-sensitive substrates. China Epoxy Resin Industry Association experts said, is also widely used in powder coatings corrosion of steel structures, popular favor the Europeans, the main by the epoxy (EP) primer and top coating weathering stability, mainly polyester (SP ) or EP / SP mixed powder composition; There is also developed other new applications, powder coating heat resistance, weather resistance and other properties are greatly improved.
Currently, the domestic water-borne epoxy coatings have been industrial production, including water-based epoxy floor coatings, water-based epoxy anticorrosive paint and wood floor coatings. Research in this area include paint cans, anti-corrosion coatings and other applications 3, according to Chinese experts, industry associations epoxy resin, powder coatings and waterborne coatings in the canned food industry has been widely applied, the existence of a large film thickness , powder recycling rate, equipment investment in Japan pre-existing defects such as dust explosion hazards gradually resolved, especially in the residual products of bisphenol A diglycidyl ether (BADGE) and bisphenol A low content, this food and beverage cans lining is essential; waterborne coatings in the construction field the first widely used, later applied to steel anti-corrosion coatings, waterborne epoxy coating is used in the field of industrial heavy-duty one of the most successful coating species; water ring oxide coatings other purposes, including preparation of multi-layer packaging materials, high strength concrete, the formation of coatings of different properties
Cured epoxy resin has excellent physical and chemical properties, especially good water resistance, chemical resistance, excellent adhesion properties and are widely used in coatings, the coatings industry is one of the products in the pillar, so environmentally friendly epoxy resin paint coating industry is currently one of the focus. Way to achieve low VOC mainly focus on high-solids coatings, waterborne coatings, powder coatings and radiation curable coatings and other new type of coating, epoxy powder coating is an effective material to achieve this goal. China Epoxy Resin Industry Association, said experts, epoxy powder coating to bisphenol A type epoxy resin, phenolic resin modified linear aliphatic epoxy resin and epoxy resin as its main body, at a certain temperature, mixing cooling formed after the smash. It is pollution-free, low melt viscosity, the coating is firm, good leveling, no primer coating, mechanical performance is good, excellent reaction activity and storage stability, corrosion resistance, chemical resistance, paint color good, curing agent wide range from wide range of applications
At present, the epoxy powder coating of hot main substrate for heat-sensitive paint and anticorrosive coatings, which for thermal epoxy powder coating the substrate are mainly: UV curing epoxy powder coating, low temperature curing epoxy powder coating . As the powder curing temperature is high (180 ~ 220 ), curing time length (10 ~ 30min), so that it can only be used in metal heat-resistant substrate, and the relative energy consumption, time-consuming; and peace because of its melt flow curing the beginning of a certain overlap, control the bad, the coating will appear on the smoothness of defects such as cratering, orange peel and so on. This one focuses on the development of UV curing powder coating and low temperature curing powder coatings for heat-sensitive substrates. China Epoxy Resin Industry Association experts said, is also widely used in powder coatings corrosion of steel structures, popular favor the Europeans, the main by the epoxy (EP) primer and top coating weathering stability, mainly polyester (SP ) or EP / SP mixed powder composition; There is also developed other new applications, powder coating heat resistance, weather resistance and other properties are greatly improved.
Currently, the domestic water-borne epoxy coatings have been industrial production, including water-based epoxy floor coatings, water-based epoxy anticorrosive paint and wood floor coatings. Research in this area include paint cans, anti-corrosion coatings and other applications 3, according to Chinese experts, industry associations epoxy resin, powder coatings and waterborne coatings in the canned food industry has been widely applied, the existence of a large film thickness , powder recycling rate, equipment investment in Japan pre-existing defects such as dust explosion hazards gradually resolved, especially in the residual products of bisphenol A diglycidyl ether (BADGE) and bisphenol A low content, this food and beverage cans lining is essential; waterborne coatings in the construction field the first widely used, later applied to steel anti-corrosion coatings, waterborne epoxy coating is used in the field of industrial heavy-duty one of the most successful coating species; water ring oxide coatings other purposes, including preparation of multi-layer packaging materials, high strength concrete, the formation of coatings of different properties
