Modification and application of Wuhan Handern polyoxymethylene
DATE：2020/6/13 8:44:50 / READ： / SOURCE：This station
Modification and application of Wuhan Handern polyoxymethylene
Poly A (POM) is a milky white opaque crystalline linear polymer with good comprehensive properties and colorability. www.handen.com Meltblown non-woven equipment
Industrial production of POM has two methods: gaseous formaldehyde method and trimethanone method, or adding a small amount of comonomer such as dioxirane polymerization, that is, there are two methods of homopolymerization and copolymerization, and the resulting products are also called For homopolymerization and copolymerization, POM is currently an ideal engineering plastic that can partially replace copper, cast zinc, steel, aluminum and other metal materials. It is extremely versatile. Its main application areas are agricultural equipment, automobiles, electronic appliances, Instruments, construction, light industry and other industries are widely used as parts and components that bear cyclic alternating loads, such as gears, impellers, bearings, village sleeves, washers, tie rods, guide rails, etc. www.handen.com Meltblown non-woven equipment
The development of domestic POM began in the late 1970s. Shanghai Solvent Factory and Jihua Shijinggou United Chemical Factory started the industrial production at the earliest, with annual production capacity of 1900t and 10002000 Yuntianhua Co., Ltd. respectively. The 10kt/a unit imported from Poland has now been completed and put into production, and the current domestic production capacity has reached 12.9kt. In recent years, the domestic consumption of POM has increased rapidly, especially since the beginning of the 21st century, the annual consumption is more than 100kt, mainly relying on imports to solve the domestic market gap. In 2005, the annual consumption of domestic POM will exceed 150kt. Due to the small number of domestic products and the huge market slippage, international multinational companies have invested and built factories in China. Both DuPont and Mitsubishi Gas Chemical Company of the United States plan to build a 10,000-ton production plant. Polyplastics, Ticona and other companies in Japan jointly invest 1.28. The construction of a 60kt plant in Nantong, Jiangsu has been approved by the relevant state authorities. In addition, Hunan Xiang Nitrogen Industry Co., Ltd., Inner Mongolia Yihua Chemical Co., Ltd., Zhejiang Juhua Co., Ltd., and Sinopec Sichuan Vinylon Plant are all in Actively wait for the construction of 10-40kt/aPO production equipment. www.handen.com Meltblown non-woven equipment
At present, POM production technology is still monopolized by large foreign companies. Foreign investors only invest in and build factories in China, and do not easily transfer technology or establish joint ventures. Therefore, domestic companies should digest and absorb imported equipment while developing and developing POM production technology on their own. As soon as possible, a localized 10,000-ton POM production facility will be built to meet the increasing demand in the domestic market. Although the performance of Homopolymer and Copolymer are different, they are basically similar. Due to the good thermal stability of Copolymer and the processing temperature The range is wide, and it has good stability to acid and alkali, so although it is slightly inferior in homopolymerization in mechanical properties, general plastics processing plants and users are willing to adopt copolymerized armor, POM has high mechanical strength, hardness and rigidity in engineering plastics It is better; long fatigue life, and excellent time-variability in various environments; has a low friction factor and excellent wear resistance; POM has a low water absorption rate, and the product has high dimensional stability: Development has a bright future. Although POM has many excellent physical and mechanical properties, it still has deficiencies and needs to be modified to meet the higher requirements of engineering. In recent years, a lot of research has been done on the modification of POM, such as the use of glass fiber reinforcement to improve mechanical strength; use of polytetrafluoroethylene powder, graphite, molybdenum disulfide, carbon fiber, polytetrachloroethylene fiber, motor oil, stearate Such as improving the material's time abrasion and reducing the friction factor, have achieved certain results and put them into industrial production. www.handen.com Meltblown non-woven equipment
Author：admin