Tomina A. Establishing patterns of influence of organic fibers on the properties and structure of aromatic polyamide phenylone

The dissertation is devoted to the development of new wear resistant organoplastics based on aromatic polyamide phenylone, for friction units of machines and mechanisms operating under the influence of high loads, temperatures, corrosive environments and dust. Systematic studies of the physico-mechanical and tribotechnical characteristics of the proposed organoplastic formulations have been carried out. The results show that the use of organic fibers Lola, Oxalon and Tanlon as fillers for aromatic polyamide phenylone is a promising way to improve its tribotechnical characteristics in frictionless conditions (using a "disk-finger" insertion of fillers improves the wear resistance of phenylone in 5 and 12 , and according to the scheme "disk-block" 7 and 5 times respectively), while improving the physical and mechanical (modulus of elasticity by 200-492 MPa, yield strength 31-36 MPa and hardness by 13-20 MPa) and thermophysical (coefficients in thermal and thermal conductivity by 28-35 and 20-35% respectively) of properties. It was established an intermolecular interaction between the binder and the organic fibers of Lola, Oxalon and Tanlon. It is revealed efficiency of the influence of nature and content of organic fibers on thermophysical, physical-mechanical and tribological properties of basic material. Mathematical models of the process of wear of mobile joints of engineering have been developed, which will allow to determine the extreme working conditions for the effective working capacity of the developed organoplastics. It is established that organoplastics remain functional at the factor P∙υ = 3 MPa∙m/s. It is shown the expediency of using composites based on phenylone in the friction units of weaving and agricultural equipment. Keywords: organoplastic, phenylone, organic fiber, properties, structure, intensity of linear wear, coefficient of friction, friction nodes.