| 초록 |
Due to structural characteristics, polyamide 12 (PA12) exhibits properties between polyolefins and short chain aliphatic polyamides, such as polyamide 6 and polyamide 66. Features like excellent water resistance and dimensional stability are attributed to the paraffin-like structure of PA12. However little is known about the fracture behavior of the material. In this study, the fracture behavior of rubber toughened PA12 was investigated. Blends were prepared by melt blending polyamide 12 with maleic anhydride (MA) functionalized rubbers. Mechanical properties of the blends were measured by Izod impact tests and tensile tests. In addition, characterization by scanning electron microscopy (SEM) of the blends showed the morphology of dispersed rubber particles in the PA12 matrix. We were able to observe a sharp increase in impact strength of PA12 blends at a critical rubber interparticle distance, therefore assuming brittle-tough transition has occurred. |
