Trouser Tearing of a Model Natural Rubber Tread Ply Vulcanizate (Paper No. 28)

摘要

A previous paper dealt with T-peel tearing of a model black-filled NR tread ply vulcanizate. Tearing alternated between slow ("stick") and fast ("slip") growth stages. "Stick" fracture involved sideways cracking that gave high tearing force and rough fracture surface. "Slip" fracture was "straight-ahead", produced smooth fracture surface, and was accompanied by a sharp decrease in tearing force. In the present paper, we report on the trouser tearing of this same vulcanizate, and relate the behavior to that found in T-peel tear specimens and edge-cut tensile specimens.