The PVC index is 40,000. The main factors affecting PVC index should consider the price cost of coal, coke, electricity, calcium carbide, crude oil, ethylene and VCM. In addition, the price of raw salt will also affect the price of PVC to some extent through the value transmission of chlorine. From the development stage of the industry, PVC has entered a mature stage and has obvious buyer's market characteristics. The largest consumption areas of PVC are profiles, profiles and pipes, which are mainly used in the construction field. Therefore, the future development trend of domestic real estate market will affect the price of PVC. In addition, China is currently in the process of rural urbanization, and some infrastructure investments will also have a certain pulling effect on PVC consumption. However, due to the completion of this process in foreign developed countries, the demand for PVC has basically reached saturation, coupled with the spread of the financial crisis, the purchasing power of the international market has declined, and the real estate industry is at a cyclical low point. It is not excluded that a large number of foreign imports flood into China, which will have a certain impact on the domestic market price.

1. What is PVC?

PVC (polyvinyl chloride) is the initiator of vinyl chloride monomer (VCM) in peroxides, azo compounds, etc. Or a polymer polymerized under the action of light and heat according to a free radical polymerization mechanism. Vinyl chloride homopolymer and vinyl chloride copolymer are collectively referred to as vinyl chloride resin.

Second, the classification of PVC

PVC can be divided into soft PVC and hard PVC. Among them, hard Pvc accounts for about 2/3 of the market and soft PVC accounts for 1/3. Soft PVC is generally used for floors, ceilings and leather surfaces, but it is easy to become brittle and difficult to store because of its softener, so its application scope is limited. Rigid PVC contains no softener, so it is flexible, easy to form, not easy to crack, non-toxic and pollution-free, and has long storage time, which is of great development and application value.

Third, the main advantages of PVC materials

This material is light, waterproof and moisture-proof. Different from the plastics we see every day, PVC also has the characteristics of flame retardant and heat insulation. PVC material has stable physical and chemical properties, is insoluble in water, alcohol and gasoline, and has low gas and water vapor leakage. It can resist any concentration of hydrochloric acid, less than 90% sulfuric acid, 50-60% nitric acid and less than 20% caustic soda solution at room temperature, and has certain chemical corrosion resistance; It is quite stable to salt, but soluble in organic solvents such as ether, ketone, chlorinated aliphatic hydrocarbon and aromatic hydrocarbon.