Effect of adhesive‐coated glass fiber in natural rubber (NR), acrylonitrile rubber (NBR), and ethylene–propylene–diene rubber (EPDM) formulations. II. Effect of cyclic loading, abrasion, and accelerated aging

Abstract

Treated glass fibers (RICS, 3 and 6 mm in length) were added at a concentrations of 10, 20, and 30 phr in natural rubber (NR), nitrile rubber (NBR), and ethylenepropylene-diene comonomer (EPDM) formulations, in both plain and carbon black mixes. The compounds were mixed in two-roll mill and were evaluated for their resistance to hot-air aging, abrasion, compression set, Goodrich heat buildup, De Mattia fatigue, and for NR mixes, adhesion in the tensile mode. The vulcanizates of the three rubbers showed resistance to hot-air aging. Abrasion resistance was poor for NR, and it improved with carbon black addition in the presence of treated glass fiber in NBR. In carbon-blackadded EPDM vulcanizates, the abrasion resistance and fatigue resistance were better.

Thermooxidative aging and kinetics of the thermooxidative degradation of ethylene–propylene–diene terpolymer‐graft‐maleic anhydride/calcium carbonate composites

“…Thermogravimetric analysis (TGA) is a useful technique for studying the decomposition reactions of solids, and it has been widely used to study the mechanisms and kinetics of the thermal decomposition of polymers 11–15…”