Tribological composites based on thermoplastic polyurethanes
The paper reports results of the study of the gasoabrasive wear of a wide range of thermoplastic polyurethanes. A relation between conditions of the synthesis of the thermoplastic polyurethanes and their structure and mechanical and tribological characteristics is found. Methods for predicting the wear of the thermoplastic polyurethanes in a flow of abrasive particles are developed with account for changes in their structure parameters such as the concentration of rigid blocks and the molecular weight as well as for the nature and type of the original components and the operating conditions such as the velocity of the abrasive particle flow and the attack angle. Ways of improving the abrasive wear resistance are proposed due to the synthesis of original materials with the required properties