PVC resin is a polymer compound formed by polymerization of vinyl chloride monomer (VCM), and its structure unit is [CH2-CHCL]n. polymerization degree is usually 590-1500. According to the content of residual polyethylene monomer in PVC resin can be divided into: industrial grade, food hygiene grade, medical grade three. The appearance of PVC resin is white powder.
The resin is used in the production and use of plastic steel profile. Its characteristics are :1, moderate resin polymerization degree, excellent mechanical properties of the products, taking into account the processing properties ;2, good plasticizing properties and mixed powder fluidity, suitable for high efficiency production with large screw extruder ;3, resin aging whiteness, excellent heat resistance, no color difference between sections of the profile.
For UPVC pipe production, the resin is characterized by good fluidity, high apparent density, suitable for large section pipe production, and can improve the production efficiency of pipe.
The resin is used in the production and use of UPVC pipe fittings. It is characterized in that the resin is fully suitable for injection molding, with excellent dry current, easy plasticization of resin, high particle gauge, high apparent density and excellent heat resistance.
For the production and use of PVC soft transparent film, the resin is characterized by high plasticizer absorption, excellent mechanical properties, less fish eyes and impurities, less "crystal dots" and excellent transmittance.
For the production and use of PVC rigid transparent film, the resin is characterized by narrow distribution of resin polymerization degree to ensure its excellent plasticizing performance and good mechanical properties. Resin fish eyes and impurities are less, products "crystal point" less, excellent transmittance.
For the production and use of PVC transparent tablets, the resin is characterized by narrow molecular weight distribution, less fish eyes and impurities, uniform transmittance and good mechanical properties.
Polyvinyl chloride paste resin (PPVC) is a kind of unique liquid form of polyvinyl chloride plastics in the unprocessed state. It is often obtained by emulsion and micro-plasticizing method. The appearance of polyvinyl chloride paste resin is white fine powder.
Ion membrane solid caustic soda body is white solid, strong alkali, to the skin, textiles, paper has a strong corrosion. Absorb carbon dioxide in the air to form sodium carbonate. Solid caustic soda has strong hygroscopicity, must be moisture-proof, air isolation.