改性酚醛树脂处理剂对石英纤维增强芳基乙炔复合材料性能的影响

采用改性酚醛树脂作为石英纤维表面处理剂来提高石英纤维增强芳基乙炔复合材料(SF/PAA)界面性能。通过性能测试,研究处理剂对力学性能和介电性能的影响。通过XPS和SEM分析方法,研究了酚醛树脂表面处理剂对复合材料界面官能团变化和微观形貌的影响。性能测试结果表明改性酚醛树脂处理剂可以显著提高PAA复合材料的力学性能和介电性能。XPS分析结果表明酚醛树脂处理后的石英纤维表面与酚醛树脂发生了化学反应,SEM研究表明酚醛树脂处理后的复合材料界面粘结性能得到显著提高。

Influence of modification phenolic resin surface treatment agent on the properties of silica fibers reinforced polyarylacetylene composites

To enhance the interfacial adhesion between silica fibers(SF) and the polyarylacetylene matrix（PAA）, the modification phenolic resin was used as the surface treatment agent for SF. The influence of treatment technology on the silica fibers reinforced polyarylacetylene composites (SF/PAA) mechanical property and dielectric property was investigated by properties testing. The composition and functional group of the silica fiber surface were examined by X---ray photoelectron spectroscopy (XPS). The fracture surface of the composites was observed by scanning electron microscopy (SEM). The results of the properties testing indicate that mechanical property and dielectric property of the composites treated by modification phenolic resin are increased greatly. From XPS analysis, it can be seen that the interface of silica fiber has been grafted with the modification phenolic resin. Compared the SEM photographs of fracture surfaces of the composites, it shows that the interfacial adhesion of the composites treated by the modification phenolic resin is improved greatly.