PVC blister film editor introduces the main varieties of modified PVC

Polyvinyl chloride is one of the most versatile plastic materials, also known as PVC. PVC has good water blocking properties, so it is widely used in the manufacture of water pipes and shower curtains. In addition, PVC is also flame retardant because the chlorine atoms released by PVC when it burns inhibit combustion. Here, the editor of PVC blister film will introduce the main modified PVC varieties. (1) Vinyl chloride-vinyl acetate copolymer: manufacture of plastic floors, coatings, films, compression molded products, records and staple fibers. (2) Vinyl chloride-vinylidene chloride copolymer: The film made of this copolymer is non-toxic, transparent, has extremely low air permeability and moisture permeability, and is an excellent food packaging material. This copolymer is also an excellent anti-corrosion material. The fiber produced by it is called polyvinyl chloride, which can be used as fishing net, seat cushion woven fabric and chemical filter cloth. (3) Propylene-vinyl chloride or ethylene-vinyl chloride copolymer: a copolymer with a propylene content of about 10%, used for blow molding and injection molding, etc. Compared with vinyl chloride-vinyl acetate copolymer, the processing temperature is lower, and the distance from thermal decomposition temperature is large, the melt fluidity is good, non-toxic, transparent and can be used to make films and containers with high transparency. (4) Vinyl chloride graft copolymer: Vinyl chloride graft copolymer based on ethylene-vinyl acetate resin has excellent impact resistance, weather resistance and heat resistance, and is suitable for outdoor building materials . (5) Chlorinated polyvinyl chloride: a thermoplastic resin obtained by chlorination of PVC, commonly known as vinyl perchloride, or CPVC for short, with a chlorine content of 61-68%, and not all hydrogen atoms are replaced by chlorine. White or light yellow-purple powder, the solubility is better than that of PVC, soluble in acetone, chlorobenzene, dichloroethane and tetrachloroethane, the heat resistance is 20~40℃ higher than that of PVC, and the cold resistance is higher than that of polyvinyl chloride. Vinyl chloride is about 25°C lower, not easy to burn, and has excellent weather resistance, chemical resistance and water resistance. Pipes can be produced by extrusion, mainly for hot water supply pipes. The solution of chlorinated polyvinyl chloride has good adhesion, film-forming and fiber-forming properties, and can be used in adhesives, varnishes and spinning. Adhesives are mainly used for bonding PVC boards and their products. The paint film of the varnish is corrosion-resistant, soft, wear-resistant and has high peel strength. The silk spun from it is called perchloric fiber, which is stable to acid, alkali and salt. It is suitable for chemical-resistant filter cloths, work clothes, and screens. , fishing nets and conveyor belts. The above are the five main modified PVC varieties introduced by the editor of PVC blister film, I hope to be helpful to everyone.