Аңдатпа
A method for producing urethane rubbers based on polyester xylitane has been developed. Industrial peroxide vulcanizates based on urethane rubber SUR-8IG crystallize at room temperature, therefore, agents forming a more developed spatial structure are used to vulcanize this rubber. The presence of a dense transverse structure reduces the rate of crystalli-zation of vulcanizates. Urethane rubbers based on known copolymer polyesters do not crystallize and can be vulcanized with organic peroxides, diazocyanates, and a mixture of vulcanizing agents. The nature of the selected vulcanization system largely determines the properties of the obtained rubbers – their hardness, modulus, residual deformation and other properties, therefore, industrial urethane rubber SUR-8PG can be used to manufacture parts for various purposes. The significant content of methyl groups in polyurethane SUR-8PG prevents crystallization and other intermolecular interactions. Rubber based on SUR-8PG rubber has a good glass transition temperature (Tc), but a relatively low elasticity. The main task of this work is the synthesis of polyurethane rubber based on xylitane polyesters (SUR –8TBk), obtained from waste from the hydrolysis and fat-and-oil industries, which has frost resistance and high elasticity.