Stress relaxation in short jute fiber-reinforced nitrile rubber composites

Stress relaxation measurements in tension have been made on nitrile rubber vulcanizates containing short jute fibers. The effects of strain level, bonding system (silica-resorcinol-hexa), fiber orientation, fiber content, temperature, and prestraining on the rate of stress relaxation have been investigated. Existence of a relaxation mechanism within the first 200 s is reported.