| Abstract: | An investigation of the strength characteristics of polychloroprene under the action of a chemically active agent and of polypropylene under the action of a physically active agent, as well as of polychloroprene and polyurethane in both the brittle and highly elastic states in the absence of an aggressivemedium showed that the strength properties of polymers in the small-deformation region are a function of the degree of crystallinity or spherolite size and do not depend on these parameters in the high-deformation region. The influence of the degree of crystallinity on strength characteristics at small deformations and the absence of this effect at large deformations were also demonstrated with pressed specimens having the granular structure typical of real rubbers.Scientific-Research Institute of the Rubber Industry, Moscow. Translated from Mekhanika Polimerov No. 2, pp. 222–225, March–April, 1972. |
