Special polyurethane elastomer material

Polyurethane is one of the six major synthetic materials in the world Polyurethane elastomer is widely used in metallurgy, drilling, shoemaking and chemical fiber machinery due to its unique properties However, due to the defects of poor heat resistance and large internal heat, the application of polyurethane in some special fields is limited Foreign countries have done a lot of work in their development, and there are many commercialized products In contrast, the domestic development is relatively backward and almost blank, and a large number of polyurethane products with special properties still need to be imported every year Shanxi Coal Chemical Research Institute of Chinese Academy of Sciences has accumulated a lot of experience in the research and development of polyurethane field for many years By introducing heat-resistant organic heterocyclic compounds into the molecular chain structure of polyurethane, improving the degree of micro phase separation and adding inorganic fillers (whiskers, fibers, nano materials), the researchers of the Institute have successfully developed special polyurethane products with enhanced functionality Compared with ordinary polyurethane elastomers, these special polyurethane products, under the premise of maintaining the original excellent comprehensive properties, especially highlight some properties such as high hardness, high strength, heat resistance and solvent resistance to meet the requirements of special applications For example, the temperature resistance of the special polyurethane elastomer developed has been improved, and the service temperature has been increased from 80 ℃ to 130 ℃ At present, the polyurethane elastomer has been successfully applied to the drill pipe wear sleeve, high-pressure sealing ring and the tightening ring, speed increasing wheel and friction plate of textile machinery in oil field drilling, filling the domestic gap.