Talk about the classification and varieties of powder coatings


According to the film-forming resin type of powder coating, it can be divided into two categories: thermoplastic powder coating and thermosetting powder coating. In thermoplastic powder coatings, according to the variety of resin can be divided into polyethylene powder coating, polypropylene powder coating, polyvinyl chloride powder coating, polyamide (nylon) powder coating, polyester powder coating, ethylene/vinyl acetate copolymer (EVA) powder coating, cellulose acetate butyrate powder coating, chlorinated polyether powder coating, polyphenylene sulfide powder coating, polyvinyl fluoride powder coating and so on. Among these powder coatings, the most common coatings used in China are polyethylene powder coatings, polyamide (nylon) powder coatings, polyvinyl chloride powder coatings, polyphenylene sulfide powder coatings and polyvinyl fluoride powder coatings.

Thermosetting powder coatings can be divided into (pure) epoxy powder coatings, epoxy-polyester powder coatings, (pure) polyester powder coatings, polyurethane powder coatings, acrylic powder coatings, etc. according to the type of resin. Among these powder coatings, the most widely used varieties in China before 2009 are epoxy-polyester powder coatings, followed by (pure) polyester powder coatings, followed by (pure) epoxy powder coatings. Due to the different national conditions of our country, it will take a long time for a large number of polyurethane powder coatings and acrylic powder coatings to be widely used. The development of powder coatings in different countries is different, and the proportion of different resin powder coatings in different countries is also significantly different. After 2010, the product structure of powder coatings has changed significantly. In the total output of thermosetting powder coatings, the output of polyester powder coatings exceeds that of epoxy polyester powder coatings, and HAA cured polyester powder coatings account for 41% of the output of polyester powder coatings. Epoxy polyester powder coatings account for two and epoxy powder coatings account for three.