In terms of building materials, industrial products, daily necessities, floor leather, floor tiles, artificial leather, pipes, wires and cables, packaging films, bottles, foaming materials, sealing materials, and fibers, PVC was the world`s largest production of general-purpose plastics, and its applications are very widely. Widely used in all aspects.
PVC is a white powder with an amorphous structure. The degree of branching is relatively small. The relative density is about 1.4. The glass transition temperature is 77~90°C. It begins to decompose at about 170°C. It has poor stability to light and heat. After prolonged exposure to sunlight, it will decompose to produce hydrogen chloride, and further automatically catalyze the decomposition, causing discoloration, and the physical and mechanical properties also rapidly decline. In actual applications, stabilizers must be added to improve the stability of heat and light.
the Degree of polymerization of SG5 is 1000. usually we also call PVC Resin S1000. Its K-value is K67.
PVC RESIN SG5,Polyvinyl Chloride,Polyvinyl Chloride SG5,PVC Resin K67 Henan Shunbang Chemical Industry CO.,Ltd , https://www.pvcresinchem.com
The discussion on the risk of overheating of shipbuilding has been extended from the China Shipbuilding Industry Association and the Shipbuilding Industry Management Department of the Commission of Science, Technology and Industry for National Defense to the public level. Shanghai Securities News, Beijing Business Daily, International Business Daily, Xinhuanet and other media have made a large-scale report on the possibility that China's shipbuilding capacity will exceed 40 million tons in 2010, and the global shipbuilding capacity will greatly exceed demand.
The report believes that if the current shipbuilding construction projects planned in China are put into practice, China's shipbuilding capacity will nearly double the national planning target in 2010. At the same time, Japan and India are also competing to expand shipbuilding capacity. Even in the international competition, South Korea has rushed to catch up with the new orders in the first quarter, which made the new orders in the first half of the year surpass China. According to this calculation, the world's shipbuilding capacity can reach 115 million dwt, which greatly exceeds the actual demand. â€