Effects of Rubber Content and Temperature on Dynamic Fracture Toughness of ABS Materials

摘要

The effects of rubber content and gemperature on dynamic fracture toughness of ABS mterials have been investigated based on the J-integral and crack opening displacement (COD,#delta#)concepts by an instrumented Charpy impact test.A multiple speciments R-curve method and stop block technique are used.It is shown that the materials exhibit a different toughess behavior,depending on rubber content and temperature.The ressitance against stable crack initiation(J_(0.2) or #delta#_(0.2)) in crease with increasing rubber content.However,J_(0.2) first increased with increasing temperature until reching the maximum value;after that,it decreases with further increasing the temperature.