| Mechanical Fracture Mechanism of NR/BR Blends |
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| DOI： |
| Key Words: NR/BR blend；mechanical fracture；tensile rupture；flex crack；thermal ageing；SEM |
| Author Name | Affiliation | | Liu Weidong | Nanjing University of Science Technology | | Gu Jianming | Nanjing University of Science Technology | | Jin Zhengji | Nanjing University of Science Technology | | Zhang Shiqi | Nanjing University of Science Technology |
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| Abstract: |
| The mechanical fracture mechanism of NR/BR blends was studied by SEM. The results showed that the fracture surface of the test piece of tensile fatigue test combined the charateristics of the tensile strength at break with that of the flex crack. The addition of silica and Si69 changed the initial cracking form of the vulcanizate in flexual fatigue test. And the thermal oxidative ageing transformed the fracture of the test piece from toughness to brittleness. |
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