| 酚醛树脂动态硫化三元乙丙橡胶/聚丙烯热塑性弹性体的动力学研究 |
| Study on Kinetics of Dynamic Vulcanization of EPDM/PP TPV with Phenolic Resin |
| 投稿时间：2021-11-25 修订日期：2021-11-25 |
| DOI：10.12136/j.issn.1000-890X.2022.06.0416 |
| 中文关键词: 三元乙丙橡胶 聚丙烯 动态硫化 热塑性弹性体 酚醛树脂 二水合氯化亚锡 助交联剂 硫化动力学 |
| 英文关键词: EPDM PP TPV phenolic resin stannous chloride dihydrate co-crosslinking agent dynamic vulcanization vulcanization dynamics |
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| 中文摘要: |
| 以二水合氯化亚锡为催化剂制备酚醛树脂动态硫化三元乙丙橡胶（EPDM）/聚丙烯（PP）热塑性弹性体（TPV），研究酚醛树脂和二水合氯化亚锡用量对EPDM/PP TPV硫化特性的影响以及助交联剂氧化锌和高乙烯基聚丁二烯（HVPBd）在硫化体系中的作用。结果表明：随着酚醛树脂用量的增大，EPDM/PP TPV的t90略有延长；随着二水合氯化亚锡用量的增大和硫化温度的升高，EPDM/PP TPV的t90明显缩短，硫化反应速率常数明显增大，硫化反应活化能先减小后增大；氧化锌和HVPBd可用于控制EPDM交联密度大小，提高EPDM/PP TPV的加工性能及抗压缩永久变形性能。 |
| 英文摘要: |
| 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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