| 废旧三元乙丙橡胶粉改性聚丙烯的性能研究 |
| Study on Properties of Waste EPDM Powder Modified Polypropylene |
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| DOI： |
| 中文关键词: 废旧三元乙丙橡胶粉 聚丙烯 复合材料 改性 |
| 英文关键词: waste EPDM powder polypropylene composite modification |
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| 中文摘要: |
| 采用废旧三元乙丙橡胶粉（简称WEPDM）对聚丙烯（PP）进行改性，并研究WEPDM用量对WEPDM/PP复合材料物理性能、熔体流动性、热稳定性以及微观结构的影响。结果表明：加入少量WEPDM可以使PP的综合物理性能提高；WEPDM用量为15份时，与纯PP相比，WEPDM/PP复合材料的拉伸强度、弯曲强度和拉断伸长率均得到提高，冲击强度变化不大；继续增大WEPDM用量可以大幅提高WEPDM/PP复合材料的冲击强度，但会导致拉伸强度和弯曲强度大幅降低。加入WEPDM会使WEPDM/PP复合材料的熔体流动性变差，但可以显著提高热稳定性；WEPDM用量为15～20份时，WEPDM与PP的相容性较好，两相结合较好，没有明显的界面区分。 |
| 英文摘要: |
| The polypropylene（PP） was modified with waste EPDM powder（WEPDM），and the effect of addition level of WEPDM on the physical properties，melt flowability，thermal stability and microstructure of WEPDM/PP composite was investigated.The results showed that，a small amount of WEPDM could improve the comprehensive physical properties of PP.When the addition level of WEPDM was 15 phr，compared with pure PP，the tensile strength，flexural strength and elongation at break of the WEPDM/PP composite were improved，but the impact strength changed little.When the addition level of WEPDM increased further，the impact strength of WEPDM/PP composite increased significantly，but the tensile strength and flexural strength decreased.WEPDM could improve thermal stability of WEPDM/PP composite，but reduce melt flowability.When the addition level of WEPDM was 15~20 phr，the compatibility between WEPDM and PP was good，the interaction between WEPDM and PP was strong，and there was no distinct interface between two phases. |
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