A polymer compound containing an epoxy group in a molecular structure is collectively referred to as an epoxy resin. The cured epoxy resin has good physical and chemical properties. It has excellent bonding strength to the surface of metal and non-metal materials, good dielectric properties, small set shrinkage, good dimensional stability and high hardness. It has good flexibility and is stable to alkali and most solvents. It is widely used in various departments of national defense and national economy for casting, dipping, laminating, bonding, coating and other purposes.
Polyester resin is an abbreviation for unsaturated polyester adhesive. The unsaturated polyester adhesive is mainly composed of an unsaturated polyester resin, an initiator, a promoter, a filler, a thixotropic agent and the like. a linear structure (see linear polymer) polyester resin containing -CH=CH- double bond in the main chain, which can be mixed with an ethylenic monomer such as styrene, acrylate, vinyl acetate, etc. Under the action of the initiator and the accelerator, it is polymerized into an insoluble and infusible product at normal temperature. The English abbreviation for unsaturated polyester is UP. Mainly used in the production of coil coatings.
The powder coating is a solid powdery synthetic resin coating composed of a solid resin and a pigment, a filler, and an auxiliary agent. Unlike common solvent-based coatings and water-based coatings, its dispersion medium is not solvent and water, but air. It has solvent-free pollution, 100% film formation and low energy consumption. Powder coatings are available in both thermoplastic and thermoset types.
Industrial salt is widely used in industry and is one of the most basic raw materials in the chemical industry. It is called "the mother of the chemical industry". Hydrochloric acid, caustic soda, soda ash, ammonium chloride, chlorine, etc. in the main products of the basic chemical industry are mainly produced from industrial salt.