The dissertation is devoted to the development of wear-resistant polymer composite materials based on phenylon C-2, chaotically reinforced with metal-containing carbon fibers. System investigations were carried out and the influence of the parameters of preparation of compositions in the rotational electromagnetic field (REF) on the properties of the received CP was revealed. Using the statistical methods of experiment planning, an optimal mode of treatment of mixtures in a rotational electromagnetic field was found.
The main regularities of the influence of metal-containing carbon fibers on the physico-chemical processes in the structure of phenylon carbon fibers obtained in the REF were investigated using the IR spectral analysis: the presence of metals in the composition and on the surface of the fiber affects the mechanism of interaction of the polymer binder and reinforcing filler and leads to the reduction of amide bonds in the phenylon oxoxyl group, its oxidation to the carboxylate ion, the realization of ionic and covalent interactions between the filler and the binder at the next pressing.
The influence of the textile peculiarities of the production of metallo-carbon fiber and nano-additives in the composition of the fiber on the properties of the obtained carbon fibers is determined in the work (in the reinforcement of phenylon C-2 Cu-СF in the amount of 17 mass% the heat capacity jump decreases by almost in twice and in the TCLЕ average by 30%, and the elastic modulus is increased by 316.4 MPa compared to the original polymer). According to the results of the conducted thermophysical, physico-mechanical and tribological researches, it was determined that the optimum content of Ural-T-24-Cu metallized fiber in the polymer matrix is 17% by weight, which provides an improved complex of technical characteristics of the developed carbon plastics (the specific heat content, however, is reduced by 15-65%, the thermal conductivity is increased by 22-42%; the temperature coefficient of linear expansion (TCLE) decreases by 10-37%; the strength characteristics increase: the compression elastic modulus is by 37%, the microhardness - by 29-38%, wear resistance of the original polymer - 12-40 times, the antifriction properties thus improve in 2,2-3,4 times).
The expediency of the conducted scientific and technical researches is confirmed by the modernization of mobile connections of machines and mechanisms at the enterprises of the country due to the use of samples from developed carbon fibers on the basis of phenylon С-2.
Keywords: composite, phenylon С-2, metal-containing carbon fibers, carbon plastics, structure, thermophysical and physico-mechanical properties, tribological characteristics, friction nodes.
