| Study on Tensile Properties of BR Vulcanizates at High Temperature |
| Received:June 20, 2019 Revised:June 20, 2019 |
| DOI：10.12136/j.issn.1000-890X.2020.03.0181 |
| Key Words: BR；carbon black；vulcanization system；tensile property at high temperature |
| Author Name | Affiliation | E-mail | | LI Xingchen | Engineering Research Center of High Performance Polymer and Molding Technology,Qingdao University of Science and Technology | xcli_0532@qq.com | | LI Chaoqin* | Engineering Research Center of High Performance Polymer and Molding Technology,Qingdao University of Science and Technology | chaoqinli@sina.com |
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| Abstract: |
| The effects of carbon black content and vulcanization system[conventional vulcanization （CV）system，semi-effective vulcanization（SEV）system，effective vulcanization（EV）system and peroxide （dicumyl peroxide）vulcanization system] on the high temperature tensile properties of butadiene rubber （BR） vulcanizates were investigated. The results showed that，with the increase of the temperature，the modulus at 50% and 100% elongation of BR vulcanizates with different carbon black content increased，the tensile strength and elongation at break decreased，and the tensile strength retention rating was enlarged with the increase of carbon black content. With the increase of the temperature，the modulus at 50% and 100% elongation of BR vulcanizates with all kinds of vulcanization system increased，and the tensile strength and elongation at break decreased. The tensile strength of BR vulcanizates with peroxide vulcanization system was lower compared with that of the BR vulcanizates with any other vulcanization system in this study，but the retention rate of tensile strength was larger at high temperature. |
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