| Study on Tear Strength of EPDM and NBR at High Temperature |
| Received:April 10, 2018 Revised:April 10, 2018 |
| DOI：10.12136/j.issn.1000-890X.2019.06.0413 |
| Key Words: tear strength；high temperature；RT/HT tear strength ratio；EPDM；NBR；NR |
| Author Name | Affiliation | E-mail | | ZHAO Xianghui* | Xiamen Elastec Corp | bradzhou@163.com | | YU Bo | Xiamen Elastec Corp | | | XIE Jintao | Xiamen Elastec Corp | | | ZHENG Tianlai | Xiamen Elastec Corp | |
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| Abstract: |
| The tear strength of ethylene-propylene-diene rubber（EPDM） and nitrile butadiene rubber（NBR） at different temperatures was studied. The results showed that the tear strength of EPDM and NBR compound decreased as temperature increasing，which basically conformed to Arrhenius equation. The tear strength at room temperature（RT） was about four times of that at high temperature（HT）.Through the ratio of the tear strength at room temperature to high temperature（RT/HT tear strength ratio），the tear strength at high temperature could be directly calculated from the tear strength at room temperature.NR had higher tear strength at high temperature，so the tear resistance of other kinds of rubber at high temperature could be improved by blending NR. |
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