Chemical Modification Of Oxidized Polymers

In the process of research, a device to determining the rheological, dilatometric, relaxation and deformation characteristics of individual polymers and polymer compositions under the conditions corresponding to operating conditions has been developed. A mechanical-chemical modification of a mixture of ethylene-propylene copolymers (SREP-5, .... = 1.7-1.8 x 105 ρ = 870 kg / m3, EPDM - 60, propylene content - 40%, antioxidant - 0.3% (m.), Mooney viscosity - 60, unsaturability - 1.7% (m.) and polyvinyl chloride (PVC)). Mechanochemical mixtures of polymers were preliminarily processed on rollers at 60 ° C within 5-7 minutes. The basic considered concerning destruction of ethylene-propylene and isobutylene-isoprene copolymers affected by high-frequency deformation due to common impact of temperature, pressure, ultrasonic oscillation (US) and other factors have been considered. Graft copolymerization mechanisms have been studied for a number of industrial polymers as well as the primary kinetic regularities for polymer modification by graft copolymerization.