Effects of Processing conditions on the failure mode of an aliphatic polyketone terpolymer

摘要

The yield and failure response of an aliphatic polyketone terpolymer subjected to multi-axial stress states has been studied, with a focus on the effects of processing conditions on the failure mode. Testing has been performed on anisotropic hollow cylindrical samples of this semi-crystalline thermoplastic material. Samples were processed under 5 different extrusion conditions. It was found that the cooling rate has some effect on the failure mode, while the rate of extrusion is less significant. Possible processing effects that may account for the differences in behavior include residual stress, amorphous orientation, or crystal morphology.