| 相容剂在三元乙丙橡胶/聚酰胺共混物中的应用 |
| Application of Compatibiliser in EPDM/Polyamide Blends |
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| DOI： |
| 中文关键词: 增容剂 聚酰胺 三元乙丙橡胶 共混物 |
| 英文关键词: compatibiliser EPDM polyamide blend |
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| 中文摘要: |
| 以马来酸西干（MA）接枝三元乙丙橡胶（EPDM)（引发剂为一种橡胶促进剂）作为EPDM/聚戳胶（PA）共混物的相容剂。研究了相容剂接枝条件及用量、PA用量对共混物力学性能和耐榕剂性能的影响。当相容剂用量为EPDM 的14%（重量比）时，共混物的拉伸强度从4MPa提高到12MPa，随相容剂用量的进一步增加，共混物的拉伸性能和耐溶剂性能得到进一步改善。DSC分析表明，共混物是明显的多相体系，但通过抽提试验发现有EPDM-g-MA/PA接枝物生成，而且从扫描电镜照片上可以明显看到加入相容剂后共混物中PA相粒子明显减小，说明PA和EPDM的工艺相容性得到大大改善。 |
| 英文摘要: |
| By the initiation of a rubber accelerator，grafting of maleic anhydride（MA）onto EPDM was accomplished to form a copolymer which serves as a compatibiliser for EPDM/polyamide（PA）blends.The MA grafting reactions on EPDM were carried out under various experimental conditions.It is shown that as the amount of EPDM-g-MA increases from 0 to 14 wt% based on total rubber，the tensile strentgth increases from 4MPa to 12MPa and solvent resistance is greatly improved too.SEM photos indicate that the polyamide particles in EPDM/EPDM-g-MA/PA blends are much smaller than that in EPDM/PA blends.Differential scanning calorimetry（DSC）measurement shows that EPDM/EPDM-g-MA/PA blends have two glass transition temperatures,-45.2 ℃ and 48 ℃，corresponding to the Tg of EPDM and PA.Therefore the EPDM/EPDM-g-MA/PA vulcanisates are multiphase systems. |
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