Improved installation for determining antifriction properties of materials

The paper presents an improved installation and method for determining friction-electro-thermal properties -friction coefficient, temperature, and value of electrostatic charge in the friction contact zone of machine-building composite wear-resistant-antistatic-thermal conducting polymeric materials during interaction with raw cotton. The existing methods and installations working at the frictional influence of polymers and composite materials with raw cotton have been studied. The general disadvantages of existing devices have been revealed, particularly the impossibility of investigating the frictional properties of materials with cotton. Theoretically and experimentally substantiated principle technological scheme of antifriction interaction of polymeric materials with cotton, where the polymeric material under study is represented as a flat disc rotating in a horizontal plane on which surface cotton is pressed along the normal using a piston in a bottomless box having a cylindrical lateral surface, which leads to minimization of lateral pressure. The developed scheme of antifriction interaction allows maximum imitation of working conditions of working elements of real machines. And also, the antifriction and physical-mechanical properties of composite polypropylene and polyethylene materials filled with organomineral ingredients determined by the developed method and improved installation -tribometer are given.

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