RESEARCH OF THE INFLUENCE OF OPERATIONAL MODES ON TRIBOLOGICAL PROPERTIES OF ORGANIC PLASTICS REINFORCED WITH CHEMICAL FIBERS BY UTILIZING THE METHOD OF MATHEMATICAL PLANNING OF THE EXPERIMENT
https://doi.org/10.33815/2313-4763.2019.2.21.154-162
Abstract
During operation, the main reason for the failure of agricultural, textile, metallurgical equipment is the wear of their tributaries. The use of polymer composite materials (PCM) instead of the traditional materials used in tribodes (bronze, steel, cast iron, etc.) can solve this problem: to increase the durability (10-20 times) and reliability (1.5 times) of the system. Aromatic polyamide phenylon is one of the most promising polymers for the creation of tribotechnical composites based on it. However, the lack of certainty of the effect of loading and sliding speed on the tribological indices of PCMs hinders their widespread introduction as parts of moving joints of equipment and mechanisms. The method of mathematical planning of the experiment - orthogonal central composite planning of the 2nd order of type 32 - investigated the influence of modes of operation on tribological properties of organoplastics based on aromatic polyamide phenylone brand C-1, reinforced with polyacrylonitrile (Lola), polyoxidesulfonamide (polyoxides). The factors that most influence the intensity of linear wear and the coefficient of friction of the developed materials are identified. It is established that the greatest influence on the wear resistance and friction coefficient of the organoplastics has a load, while the developed materials remain viable at the factor Pv = 3 MPa m2/s. Mathematical models have been found, in the form of second order polynomials, which adequately describe the dependence of the optimization parameters of the developed materials on the sliding and loading velocity, and will also allow to optimize the work of nodes, equipped with organoplastics. The influence of the operating modes (sliding and loading speed) on the tribological properties of organo-plastics reinforced with Lola, Oxalon, and Tanlon fibers was investigated by the method of mathematical planning of the experiment. Mathematical models have been found that will allow optimizing the operation of nodes, equipped with organo-plastics reinforced with Lola polyarylene fiber.
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