Coating classification: epoxy powder coating

Core tip: brief introduction: powder coating is a kind of coating with 100% solid content, which is coated in powder form and film-forming It uses air as dispersion medium Epoxy powder coating is a kind of thermosetting powder coating with corrosion resistance and tenacity It is the earliest and rapidly developed coating It is composed of epoxy resin, pigments and fillers, additives and curing agents The preparation of epoxy powder coating is the only way to produce thermosetting powder coating in the world, that is, the melt mixed extrusion method - mixing, melt mixed extrusion, fine grinding Requirements for epoxy resin of epoxy powder coating Shenyang steel structure fireproof coating construction expert punde Building Fire Engineering Co., Ltd Recommended introduction: since its establishment, Shenyang punde Construction Fire Engineering Co., Ltd has cultivated a group of professional construction teams with excellent equipment, rich experience and serious responsibility with advanced and scientific management methods and strict engineering quality assurance and after-sales service system It has undertaken a number of fire system installation projects, which has been praised by customers Every idea and special requirement of you will be fully considered by us and fully realized in the construction technology, which will become the cornerstone of our successful long-term development We are looking forward to your invitation, to provide you with quality services and high-quality technical support! All construction coatings have passed ISO9001 Coating home news: brief introduction: powder coating is a kind of coating with 100% solid content, which is coated in powder form and film-forming It uses air as dispersion medium Epoxy powder coating is a kind of thermosetting powder coating with corrosion resistance and tenacity It is the earliest and rapidly developed coating It is composed of epoxy resin, pigments and fillers, additives and curing agents The preparation of epoxy powder coating is the only way to produce thermosetting powder coating in the world, that is, the melt mixed extrusion method - mixing, melt mixed extrusion, fine grinding The required conditions for epoxy resin of epoxy powder coating: the epoxy equivalent shall be a solid resin between 700-100, with narrow molecular weight distribution; at its curing temperature, the melting viscosity is low, it is easy to flow flat, and the coating film is flat and thin; it has good dispersion for pigments and fillers The curing agents of epoxy powder coating mainly include dicyandiamide, dicyandiamide derivatives, anhydrides, imidazole, cyclic ether, phenolic resin polyester resin, boron trifluoride amine complex In industry, dicyandiamide, imidazole and cyclic ether are generally used Features: the features of epoxy powder coating are as follows: ① strong adhesion, especially to metals; ② good mechanical properties, high hardness, scratch resistance and corrosion resistance of epoxy powder coating film; ③ low melting viscosity, good leveling, and basically no pinholes and shrinkage defects in the coating film; ④ There are many kinds of epoxy powder coatings, which can be made up of matte, bright, patterned, hammered, etc.; ⑤ the thickness of the coating film of epoxy powder coating can reach 50-300 μ m, which can be recycled for uncoated powder; ⑥ the coating equipment of epoxy powder coating needs high requirements, large investment and complex and precise equipment Main varieties: epoxy powder coating mainly includes epoxy glossy powder coating, epoxy matte powder coating, epoxy matte powder coating, epoxy semi glossy or flat powder coating, epoxy electrophoretic powder coating and functional epoxy powder coating such as antibacterial, conductive, flame-retardant and artistic Construction items: ① the epoxy powder coating has strong adaptability, which can be applied by electrostatic spraying, fluidized bed coating, electrostatic fluidized bed coating, flame spraying and other methods, of which the electrostatic powder coating method is the majority; ② the electrostatic coating voltage of the epoxy powder coating is generally 40-80 kV, the distance is kept 150-300 mm, and the amount of spraying powder should be balanced, at 70-200 g / min; ③ The number of electrostatic spraying of epoxy powder coating should not be too many; ④ the curing temperature and time of baking of epoxy powder coating should be strictly in accordance with the requirements, and the baking temperature should be uniform, so as to avoid too high or too low local baking temperature; ⑤ dust pollution, dust explosion and other problems should not be ignored during the coating of epoxy powder coating Application scope: epoxy powder coating is not suitable for base materials with poor heat resistance, because its baking and curing temperature is high, up to 140 ℃ It can be used for decorative protection of electrical switch cabinet, electronic instruments and meters, metal silicon box, electrical insulation protection of motor rotor or copper bar, corrosion and rust prevention of kitchen utensils, auto parts, ships, building materials, underground facilities, etc Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,