کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5185707 | 1381085 | 2007 | 10 صفحه PDF | دانلود رایگان |
In this study, we have investigated the effect of thermoplastic vulcanizates (TPV) content and characteristic on the double yielding of injection molded polyamide 6 (PA6)/TPV blends uniaxially tensile deformed at room temperature. The results indicated that the TPV content and characteristic showed a marked effect on the double yielding phenomenon. The morphological observation by scanning electron microscope (SEM) showed that the injection molded PA6/TPV blends displayed a typical skin-core structure with highly oriented TPV particles in the skin and sub-skin layers, and spherical TPV particles in the core layer. Combining the microscopic morphology and stress-strain behavior, a possible model for description of the double yielding behavior of the PA6/TPV blends was proposed. The first yield point might be caused by the deformation of the matrix and the dispersed phase in the skin and sub-skin layers, while the second yield point is correlated with the deformation of the dispersed phase in the core layer.
Journal: Polymer - Volume 48, Issue 25, 30 November 2007, Pages 7404-7413