| Study on Kinetics of Dynamic Vulcanization of EPDM/PP TPV with Phenolic Resin |
| Received:November 25, 2021 Revised:November 25, 2021 |
| DOI：10.12136/j.issn.1000-890X.2022.06.0416 |
| Key Words: EPDM；PP；TPV；phenolic resin；stannous chloride dihydrate；co-crosslinking agent；dynamic vulcanization；vulcanization dynamics |
| Author Name | Affiliation | E-mail | | WANG Chao* | SINOPEC Beijing Research Institute of Chemical Industry Yanshan Branch/National Engineering Research Center for Synthesis of Novel Rubber and Plastic Materials | wangchao.bjhy@sinopec.com |
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| Abstract: |
| Using stannous chloride dihydrate as catalyst，ethylene-propylene diene rubber（EPDM）/polypropylene（PP） thermoplastic vulcanized（TPV） which was dynamically vulcanized by phenolic resin was prepared，the effects of phenolic resin and stannous chloride dihydrate dosage on the vulcanization characteristics of EPDM/PP TPV and the role of co-crosslinking agents zinc oxide and high vinyl polybutadiene（HVPBd） in the vulcanization system were studied. The results showed that as phenolic resin dosage increased，the t90 of EPDM/PP TPV was slightly prolonged，and as stannous chloride dihydrate dosage and vulcanization temperature increased，the t90 of EPDM/PP TPV was significantly shortened，the vulcanization reaction rate constant increased obviously，and the activation energy of the vulcanization reaction decreased at first and then increased. Zinc oxide and HVPBd could be used to control the crosslinking density of EPDM and improve the processability and compression set resistance of EPDM/PP TPV. |
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