Tribotechnical properties of composite materials based on thermoplastic polymer and organomineral fillers working under contact interaction with cotton-fiber

The tribotechnical properties of composite materials (CM) based on a thermoplastic polymer and organomineral fillers operating under conditions of contact interaction with pulp are investigated using the example of raw cotton. The regularities of changes in the coefficient of friction and the intensity of wear of composites during contact interaction with raw cotton have been determined, the dependences of the temperature and magnitude of the electrostatic charge in the polymer-cotton and composite-cotton friction zone on the type and content of organic-mineral fillers in the CM have been studied. It has been established that the introduction of carbon-graphite fillers into the CM composition leads to a significant decrease in the friction coefficient, temperature and static electricity charge in the friction zone with raw cotton. The introduction of mineral fillers into CMs noticeably increases their coefficient of friction with raw cotton, the temperature and charge of electrostatic electricity in the friction zone with a simultaneous decrease in the wear rate, with the exception of fillers with a lamellar structure (talc, kaolin), when used, a decrease in the coefficient of friction is observed. The introduction of fillers with a fibrous structure leads to a significant decrease in the wear rate of polymer CMs and provides high strength and durability of the material under thermomechanical action. Effective compositions of antifriction and wear-resistant polymeric CMs have been developed for work in conditions of contact interaction with raw cotton.