INFLUENCE OF VARIOUS TYPES OF IONIZING-RADIATIONS ON THE PROPERTIES OF RUBBER BASED ON SKN-18

The influence of the gamma radiation of Co-60, neutrons of a nuclear r eactor, and 100-MeV protons on the concentration of internodal chains in a network, the vitrification point of polar and nonpolar blocks of the rubber, as well as gas evolution and the physicomechanical charact eristics of the rubber based on SKN-18, was investigated Specific feat ures were detected in the influence of the type of ionizing radiation, manifested most strongly in the polar block of the rubber. In the cas e of neutron irradiation the ratio of the rates of cross-linking and d estruction is changed in the direction of an increase in the rate of c ross-linking. During gamma irradiation under vacuum there is a topolog ical ''condensation'' of the chains of the polar block.