使用硅烷偶联剂对芳纶纤维平织布进行表面接枝改性,研究表面改性对芳纶纤维橡胶基复合材料的层间结合性能和抗冲击性能的影响。对改性后的芳纶纤维表面进行FT-IR分析,研究改性原理,并利用SEM对改性前后纤维表面进行微观结构分析。通过对改性前后芳纶纤维制成的橡胶基复合材料板进行层间结合力测试和落锤式低速抗冲击测试,得出纤维表面改性后复合材料层间结合力和冲击峰值载荷分别提高42%和33.06%。研究表明,纤维表面的改善对于抗低速冲击性能有积极影响,为芳纶纤维橡胶基复合材料抗冲击性能的提高提供了新的思路,对复合材料复杂环境下的应用有重要意义。
The effects of surface modification on the interlaminar bonding and impact resistance of aramid fiber rubber matrix composites were studied by using silane coupling agent.The surface of modified arylon fiber was analyzed by FT-IR,the modification principle was studied,and the microstructure was analyzed by SEM before and after modification.By testing the interlaminar adhesion and the drop hammer low speed impact resistance of the rubber matrix composite plate made of arylon fiber before and after modification,it was concluded that the interlaminar adhesion and peak impact load of the composite material after modification of the fiber surface were increased by 42% and 33.06% respectively.The results shown that the improvement of fiber surface had positive effect on the low speed impact resistance,which provided new idea for the improvement of the impact resistance of arylon fiber rubber matrix composite,and was of great significance for the application of composite materials in complex environment.
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基金资助
国家自然科学基金面上项目(52075280);山东省自然科学基金(ZR2019MEE088)
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