The plasticizer is usually a high -boiling point or a low -melting point solid, which can increase the plasticity and liquidity of Pvc Resin in the process of processing and molding, make the hard Rubber And Plastic material a soft and tough material, reduce the glass transformation temperature and sticky flow Temperature, reduce melt viscosity. The plasticizer may also reduce the melting point of Pvc Resin Sg5 Epoxy Resin microcrystalline, which is conducive to processing. It is required to be compatible with PVC, it is not easy to precipitate from the product, it is not easy to volatilize, it is not easy to migrate, the solvent is resistant to solvent, Sodium Hexametaphosphate the plasticization effect is long -lasting, the price is low, non -toxic or meet the food hygiene standards. Commonly used plasticizers are mainly ester compounds and Titanium Dioxide chlorine chloride. According to compatibility, there are main plasticizers and auxiliary plasticizers.