| Influence of 2，5-Dimethyl-2，5-bis-(tert-Butylperoxy) Hexane on Dynamic Property and Heat Aging Resistance of EPDM/POE Blend |
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| DOI： |
| Key Words: EPDM；POE；2，5-dimethyl-2，5-bis-(tert-butylperoxy) hexane；dynamic property；heat aging resistance |
| Author Name | Affiliation | | GONG Li | Qingdao University of Science and Technology | | LIU Pingping | Qingdao University of Science and Technology | | YU Xiaolu | Qingdao University of Science and Technology | | HUANG Zhaoge | Qingdao University of Science and Technology |
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| Abstract: |
| The influence of 2，5-dimethyl-2，5-bis-(tert-Butylperoxy) hexane（DBPH）on the dynamic property and heat aging resistance of EPDM/polyolefin elastomer（POE） blend was investigated by using rubber processing analyzer（RPA）.The results showed that，the dynamic property of the compounds with different addition level of DBPH was similar，but the vulcanizates had different dynamic property when the crosslinking density was different.The storage modulus of EPDM/POE compounds and vulcanizates increased with the increase of frequency，and decreased with the increase of strain and temperature.The loss factor of EPDM/POE compounds decreased with the increase of frequency，and decreased with the increase of strain and temperature.The loss factor of EPDM/POE vulcanizates slightly depended on the frequency，increased with the increase of strain，and decreased with the increase of temperature.The loss factor of EPDM/POE vulcanizates with different addition levels of DBPH increased after high temperature aging without oxygen by RPA.The loss factor of the vulcanizate with 3.5 phr DBPH was low before and after aging，showing good heat aging resistance. |
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