The type influence of the reinforcing fiber filler in prepregs on the physical and mechanical properties of skis

Abstract

The analysis of the physical and mechanical properties of the sport-running plastic skis made with the use of prepregs based on different reinforcing fillers has been carried out. Reinforcement of polymeric composite materials is carried out by fiber fillers, which include a large number of various textile structures made on the basis of fibers and yarns (yarn, chemical threads) and/or paper webs. Domestic widespread materials were chosen as reinforcing fillers: direct glass roving, basalt and polyester fibers. The wide range of different fiber structures is explained by the need to obtain prepregs with different mechanical, technological and functional properties, which will have decisive values for the final product. The purpose of this study is to determine the influence of different NAs on the performance properties of skis. The following performance properties were studied as determinants: the straightening load (Fischer stiffness index), the stiffness of the ski middle part, the height of the residual deflection, the stiffness constant of the ski front (rear) parts . On the example of the developed domestic epoxy binder and prepregs obtained on its basis using different reinforcing fillers (glass, basalt and polyester), it is shown that the physical and mechanical properties of the final product (skis) directly depend on the nature of the filler.