Fracture characterization of PC/ABS blends: effect of reactive compatibilization, ABS type and rubber concentration
作者： G. Wildes , H. Keskkula , D.R. Paul
DOI: 10.1016/S0032-3861(98)00865-9
关键词: Fracture (geology) 、 Acrylonitrile butadiene styrene 、 Composite material 、 Natural rubber 、 Polymer 、 Materials science 、 Polycarbonate 、 Fracture mechanics 、 Polymer blend 、 Izod impact strength test
摘要: Abstract The fracture of thin (3.18 mm) and thick (6.35 mm) specimens polycarbonate (PC), acrylonitrile–butadiene–styrene (ABS) PC/ABS blends with both standard sharp notches was examined by Izod single edge notch three point bend (SEN3PB) instrumented Dynatup tests. Ligament lengths were varied for SEN3PB samples the corresponding data represented plotting specific energy ( U / A ) as a function ligament length (l). slope these plots found to be closely related impact strength size process (or stress whitened) zones surrounding crack surface. Significant morphology coarsening seen in some (70/30) injection molded parts; compatibilized 1% an SAN-amine polymer exhibited well-dispersed, stable morphologies. effects blend composition, ABS type, sample geometry, PC molecular weight, temperature, rubber concentration reactive compatibilization on properties materials examined.
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