Mechanical Property, Thermal Conductivity, Rebound Resilience and Thermal Property of Chloro Isobutylene Isoprene Rubber/Ethylene Propylene Diene Monomer Blend

摘要

Chloro isobutylene isoprene rubber (CIIR) and ethylene propylene diene monomer (EPDM) compounded with other formulation chemicals, depending on the polymer blend, were prepared by mechanical mixing. After manufacturing the rubber vulcanizate by compression molding with a hot press, the mechanical and thermal properties including thermal conductivity, rebound resilience o f the CIIR/EPDM blends were measured. As the EPDM rubber content increased, hardness and tension set showed a tendency to increase. Pure CIIR exhibited the lowest tensile strength; however, tensile strength increased with loading o f EPDM rubber. On the other hand, in CIIR rubber, which is usually a low-rebound elastomer owing to a high damping effect, rebound resilience exhibited an increasing trend as the content o f EPDM rubber increased. As the EPDM rubber content increased, thermal stability was improved due to reduction o f decomposition rate in the rubber region of the blend vulcanizate.