Development trend of the hottest powder coatings 0

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Development trend of powder coatings

powder coatings are widely valued all over the world because they contain no solvent at all and can be completely converted into coatings. Their advantages, such as high coating efficiency and good comprehensive performance of protection and decoration, have led to rapid development. As an important application field of coatings, the construction industry is undoubtedly paid special attention by the majority of powder coating manufacturers. For powder coatings for metal and non-metal building materials, the recent development trend is:

powder coatings for aluminum building materials. Metal building materials are widely used in all aspects of buildings because of their excellent durability, decoration and processing formability. Aluminum building materials account for more than 80% of metal building materials because of their good processing performance and light weight. Affected by coal resources, combustion conditions, storage and transportation environment and other factors in the 20th century, the application of plug and play powder coatings in aluminum building materials has increased rapidly since the advent of the early powder coatings in the 1970s. At present, the application of powder coatings in aluminum building materials has expanded from Europe to the Americas, Australia, the Far East, the Middle East and Africa. In the coating of aluminum building materials, the representative powder coatings include epoxy resin, polyester resin, acrylic resin and silicone resin powder. This value should not exceed 15% coating for the experimental machine of automatic self-aligning chuck. As applications, most of the aluminum building materials with high corrosion resistance, such as some aluminum frames, doors and windows, balconies, corridors, partition boards, etc., use polyester and acrylic powder coatings. In addition, epoxy resin powder coating has excellent adhesion and corrosion resistance, but slightly poor weather resistance, so it is generally used indoors or as primer. Recently, a thermosetting fluororesin powder coating that can be coated by a general powder coating production line has been developed. This thermosetting fluororesin powder coating has better weather resistance, light retention and durability than epoxy resin powder coating, polyester resin powder coating and acrylic resin powder coating, and even comparable to solvent fluororesin coating

powder coatings for non-metallic building materials. The workpieces that need decorative coating in non-metallic building materials generally refer to heat sensitive materials such as wood and plastic. After years of research, people have organically combined the environmentally friendly powder coating technology with the radiation curing technology, which can quickly cure the powder coating at low temperature, and almost no volatile matter is produced during the curing period, so that the application of powder coating in wood, plastic and other building materials can be gradually applied

powder coating. This coating is a new type of powder coating developed by DSM company in the Netherlands, with good thermal stability. The coating is solid at room temperature, which means that this UV curable powder coating can be produced by the traditional powder coating preparation process. That is, after adding photoinitiator, pigment and additives to the base material, it can be mixed evenly in the melt extrusion process. The powder coating can be electrostatically sprayed on wood with a friction gun to form a 50 ~ 100 micron thick coating

up/pvae powder coating. The coating is suitable for coating thermosensitive substrates such as medium density fiberboard and thermoplastic. Its penetrability is 0.01~500 mm/min. when the bright powder coating is applied to MDF, it can obtain a perfect decorative appearance. In addition, it can also be used to paint high-density wood. As long as the holes of low-density wood are initially sealed with liquid primer, it can also be coated with this paint without degassing effect from the substrate. Its colored powder coating reduces the thoroughness of curing due to the pigments contained in it, and it is still being studied to solve this problem

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