Heat Build-up, Gas Permeability Property, Thermal Property and Dynamic Mechanical Property of Natural Rubber and Bromo Butyl Rubber Blends

Natural rubber (NR) and bromo isobutylene isoprene rubber (BIIR) compounded with other formulation chemicals through polymer blending were manufactured via mechanical mixing method. After manufacturing of rubber vulcanizate with compression molding by hot press, and then heat build-up, gas permeability property, thermal property and dynamic mechanical property of NR/BIIR blends were subsequently measured. As the BIIR contents increased, heat build-up and gas permeability property increased linearly. And also decomposition temperature increased with an increasing of BUR contents, so it was confirmed that thermal stability was improved. However tan delta peak shifted higher temperature with the loading of BIIR contents. It was observed that 60 degrees C tan delta which is an indicator of rolling resistance was increasing with an increasing of BIIR contents.