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采用二元乙丙橡胶接枝马来酸酐(EPM-g-MAH)作为二元乙丙橡胶(EPM)增韧聚酰胺6(PA6)的增容剂,研究了PA6/EPM/EPM-g-MAH三元共混物的流变性能、力学性能和微观形态。结果表明,EPM-g-MAH可以与PA6发生增容反应生成接枝共聚物,改善了PA6和EPM的界面相容性。随着EPM-g-MAH含量的增加,共混物中分散相粒径更加细化,共混物的熔融峰温下降,缺口冲击强度显著提高,当EPM/EPM-g-MAH的配比为10/10时,共混物的冲击强度达到最大为47 kJ/m2,比纯PA6提高了8倍。
EPDM grafted maleic anhydride (EPM-g-MAH) was used as compatibilizer for polyamide 6 (PA6) toughened by ethylene-propylene rubber (EPM) MAH rheological properties of ternary blends, mechanical properties and microscopic morphology. The results showed that EPM-g-MAH could compatibilize with PA6 to produce graft copolymer, which improved the interfacial compatibility between PA6 and EPM. With the increase of the content of EPM-g-MAH, the disperse phase size of the blend was more refined, the melt peak temperature of the blend decreased, the notched impact strength increased significantly. When the ratio of EPM / g-MAH was At 10 h, the impact strength of the blends reaches 47 kJ / m2, which is 8 times higher than pure PA6.