Introduction and application of thermoplastic powder coating

The thermoplastic powder coating has the characteristics of softening in case of heat, curing and film formation after cooling, which is mainly the physical melting and film formation process The application of thermoplastic powder coating is earlier As early as the mid-1940s, the research and test work on the development of thermoplastic powder coating in Europe has a history of more than 30 years .. thermoplastic powder coating has the characteristics of softening in case of heat and curing to film after cooling, which is mainly the process of physical melting and plasticizing to film The application of thermoplastic powder coating is earlier As early as the mid-1940s, the research and test work on the development of thermoplastic powder coating in Europe has a history of more than 30 years There are many kinds of thermoplastic powder coatings that can be applied, such as polyethylene, polypropylene, PVC, polyamide, thermoplastic polyester, chlorinated polyether, polytetrafluoroethylene, etc Thermoplastic powder coating is suitable for anti-corrosion coating, wear-resistant coating, non-toxic coating and general decorative coating The scope of application mainly includes chemical equipment, chemical pipeline, chemical storage tank, plate, wire rod, mechanical parts, light tools, food industry, etc With the emergence of electrostatic spraying and electrostatic current bed method, the application scope has been further expanded, and instruments, electronics, machinery, automobile, construction and other industries have their own applications In recent years, due to the expansion of the market and the improvement of coating technology, it has been applied to the textile industry At present, the application of thermoplastic powder coating in our country has a new development, and the amount of use has increased obviously Thermoplastic powder coating is characterized by simple processing and preparation, excellent chemical and mechanical properties of the coating, outstanding wear resistance and lubricity of some varieties, and low price in general However, this kind of resin powder is difficult to be crushed, with coarser particle size, poor gloss and leveling of the coating film, poor mechanical strength, and poor adhesion to metal Generally, the drum can be used only after the primer is precoated The comprehensive analysis has the following excellent characteristics 1 Excellent chemical stability 2 Light weight 3 Excellent electrical insulation 4 Excellent antifriction, wear resistance, shock absorption and noise reduction performance The above characteristics of plastic powder make it widely used in industry In order to expand the application of thermoplastic powder coating, further improve the heat resistance, rigidity and decoration of the resin At present, in addition to adding various auxiliary materials, resin modification can also be used to achieve the desired results Recently, there are many kinds of modified thermoplastic powder coatings, which improve the glossiness, hardness, adhesion, elasticity and other properties of the coating, and meet the coating requirements of some products For example: 1 Terpene resin modified polyethylene enhances surface hardness and adhesion 2 Vinyl acetate copolymer modified polyethylene improves coating toughness and surrounding stress cracking 3 Polypropylene modified polyethylene improves surface strength and mechanical strength 4 The mechanical strength and glossiness of polybutadiene modified polyethylene were improved 5 Cellulose acetate modified polyethylene improves the strength and leveling properties 6 Polycarbonate modified polyethylene improves stress cracking and durability 7 Epoxy resin modified polyamide improves corrosion resistance and adhesion.