Polyurethane is one of the six synthetic materials in the world, among which polyurethane elastomer has been widely used in the fields of metallurgy, drilling, shoemaking and chemical fiber machinery due to its unique properties.
However, the application of polyurethane in some special fields is limited because of its defects such as poor heat resistance and large endogenous heat.
Foreign countries have done a lot of work on its development, and there are a lot of commercialized products.
In contrast, domestic development is relatively backward, almost blank, still need to import a large number of special performance of polyurethane products every year.
Shanxi institute of coal chemistry, Chinese academy of sciences has accumulated a lot of experience in the research and development of polyurethane over the years.
By introducing heat-resistant organic heterocycles into the molecular chain structure of polyurethane, improving the degree of microphase separation and adding inorganic fillers (whiskers, fibers, nanomaterials), the researchers of the institute successfully developed the functional enhanced special polyurethane products.
Compared with ordinary polyurethane elastomers, these special polyurethane products, on the premise of maintaining the original excellent comprehensive properties, especially highlight some properties such as high hardness, high strength, heat resistance, solvent resistance to meet the requirements of special applications.
Such as the development of special polyurethane elastomer heat resistance were improved, using temperature from 80 ℃ to 130 ℃, at present the polyurethane elastomer has been successfully applied in oil field drilling pipe wear sleeve, high-pressure sealing ring and textile machinery when tight ring, growth wheel, friction plate, etc., to fill the domestic blank.