| Influence of 1，2-PBR and BR on curing behavior and physical properties of EPDM |
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| DOI： |
| Key Words: EPDM；BR；1，2-PBR；blend |
| Author Name | Affiliation | | YANG Jun | South China University of Technology | | CHEN Zhaohui | South China University of Technology | | LU Xiaojing | South China University of Technology | | WANG Dizhen | South China University of Technology |
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| Abstract: |
| The curing behavior，the crosslinking density and the physical properties of EPDM/1，2-PBR and EPDM/BR blends cured with the peroxide curing system and the sulfur curing system respectively were investigated. The results showed that the crosslinking density，the modulus at 100% elongation，the Shore A hardness and the tear strength of EPDM/1，2-PBR and EPDM/BR cured with the peroxide curing system increased，and those of EPDM/1，2-PBR increased mo re significantly；the cure rate of EPDM was increased by blending with 1，2-PBR or BR when cured with the sulfur curing system，and the crosslinking density，the modulus at 100% elongation and the Shore A hardness of the vulcanizate decreased slightly as the proportion of 1，2-PBR increased，the modulus at 100% elongation and the tensile strength of the vulcanizate decreased significantly as the proportion of BR increased. It was found by DSC that the better covulcanization of EPDM/1，2-PBR blend was obtained with the peroxide curing system. |
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