Effect of Electron Beam Irradiation on Chlorinated Polyethylene/Vinyl Acetate/Nitrile Rubber Blend System

Abstract

Abstract The blends of chlorinated polyethylene (CPE), ethylene-vinyl acetate copolymer (EVA) and nitrile rubber (NBR) were mixed and irradiated by electron beam. The effects of chlorinated polyethylene and electron irradiation on the structure and properties of blends were studied. The mechanical properties, crosslinking degree, crystallization properties, structure and morphology of EVA/NBR/CPE composites were characterized. The results showed that the addition of 25phr CPE had a significant effect on the capacity increase of EVA/NBR blend system, and the mechanical properties of the composites increased first and then decreased, the degree of crosslinking and the glass transition temperature increased while the crystallization temperature and enthalpy decreased. Electron beam irradiation induced hydrogen extraction reaction, formed a cross-linking structure, enhanced the phase interface bonding, and produced a synergistic effect with CPE volume-increasing EVA/NBR blend system.