摘要
本文通过反应挤出技术研究了三元乙丙橡胶接枝马来酸酐(EPDM-g-MAH)的用量对尼龙6(PA6)力学性能的影响及共混物的冲击断面形态。结果表明:马来酸酐的酸酐基团能够与PA6上的氨基发生反应,改善了增韧剂EPDM在基体中的分散状态,EPDM-g-MAH对PA6合金具有良好的增韧作用;采用EPDM-g-MAH作为PA6合金体系的增韧剂,使PA6合金的力学性能得到显著提高;随着EPDM-g-MAH的增加,PA6合金体系熔体流动速率逐渐降低,共混物挤出、注射成型稳定具有良好的加工性能。
The influence of EPDM-g-MAH addition level on the mechanical properties of PA6 was studied in a reactive extrusion process and the impact fracture surface of blends was investigated.The results showed that the anhydride group of malefic anhydride reacts with the amino end-groups of PA6,which evidently improved toughening EPDM dispersed in the matrix of state,EPDM-g-MAH toughening of PA6 alloys had an excellent effect;the use of EPDM-g-MAH as toughening PA6 alloy system,so that the mechanical properties of PA6 alloys significantly improved;with the increasing of EPDM-g-MAH,PA6 alloy system melt flow rate decreases,blend extrusion,injection molding stability has good processing properties.
引文
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