环氧化硅橡胶/甲基硅橡胶增韧PA6/CF复合材料的制备与性能研究  

Preparation and properties of PA6/CF composites toughened with epoxidized silicone rubber/methyl silicone rubber compounding system

作　　者：张伟臻 张琦[1] 李源 卢咏来[2] 张师军[1] ZHANG Weizhen;ZHANG Qi;LI Yuan;LU Yonglai;ZHANG Shijun(Sinopec(Beijing)Research Institute of Chemical Industry Co,Ltd,Beijing 100013,China;Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]中石化(北京)化工研究院有限公司,北京100013 [2]北京化工大学,北京100029

出　　处：《中国塑料》2025年第3期7-11,共5页China Plastics

摘　　要：采用熔融共混法制备环氧化硅橡胶/甲基硅橡胶(ESR-5/PDMS)增韧聚酰胺6/碳纤维复合材料,研究了ESR-5/PDMS复配增韧体系中环氧基团含量对PA6基复合材料力学性能、冲击性能、耐热性能和微观结构的影响。结果表明,当增韧复配体系中ESR-5和PDMS各为10份时,通过原位接枝反应提高了硅橡胶与PA6的界面作用力,从而提高复合材料的抗冲击和抗损伤能力,23、-20、-60℃的缺口冲击强度相较于PA6/CF复合材料分别提高了73.6%、178.0%、196.8%,在低温环境下表现出优异的抗冲击性能,并且最大程度地降低弹性体的引入使体系力学性能下降的影响;同时改善了复合材料的热稳定性能,ESR-5/PDMS增韧体系为碳纤维增强聚酰胺6复合材料在低温环境下的应用提供了可行性方案。Polyamide 6(PA 6)/carbon fiber composites toughed with epoxidized silicone rubber(ESR-5)/methyl silicone rubber(PDMS) compounding system were prepared through melt blending,and the effect of epoxy content on the mechanical properties,impact properties,heat resistance,and microstructure of PA6 composites was investigated.The results indicated that when there were 10 phr ESR-5 and 10 phr PDMS in the compounding system,the interface force between PA and silicone rubbers could be by in situ grafting reaction,thus enhancing the impact resistance and damage resistance of the composites.This resulted in an increase in the notched impact strength by 73.6 %,178.0 % and 196.8 % at 23,-20,and-60 ℃,respectively,compared to the composites without toughening,exhibiting an excellent impact resistance in low temperature environment.This also minimized the impact of introducing elastomers to the reduction in the mechanical properties of the composite system.Meanwhile,the thermal stability of the composites was improved.The ESR-5/PDMS toughening system provides a feasible solution for the applications of carbon-fiber-reinforced PA6 composites in low temperature environments.

关 键 词：环氧化硅橡胶 聚酰胺6 碳纤维增强复合材料 增韧改性 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]