The Charpy impact fracture behaviour in ABS materials

The effects of rubber content and temperature on impact fracture behaviour of ABS materials with rubber particle diameter of 110 nm were studied by me ans of an instrumented Charpy impact tester which can record a load-deflect ion curve at impact fracture. From the load-deflection curves, some importa nt parameters, such as the maximum impact load, the maximum deflection, the J-integral corresponding to the total impact absorbed energy, dynamic yiel d stress and Young's modulus etc. were obtained and their rubber content an d temperature dependencies were investigated. Stable crack extension and pl astic zone size are studied as a function of rubber content and temperature by the use of optical microscope. The fractured surfaces were observed usi ng a scanning electron microscope to clarify the fracture mechanism under i mpact condition.