表面处理对石英纤维增强PAA树脂复合材料界面性能的影响

摘要/Abstract

摘要： 通过烧蚀法去除表面浸润剂、表面接枝偶联剂等方法,对石英纤维进行了不同的表面处理。使用不同的石英纤维/PAA树脂体系制造了复合材料层合板,测试了弯曲、层间剪切和压缩性能,通过对比不同表面处理方式对纤维浸润性、固化后力学性能及断面形貌的影响。研究了不同表面处理方法对石英纤维和PAA树脂界面结合性能的影响。结果表明:去除浸润剂的纤维,毛细压力值降低,树脂对纤维的浸润能力降低,使得PAA树脂与石英纤维的润湿角变大,界面结合力降低,固化后复合材料的力学性能降低,且复合材料断裂面上纤维光滑,树脂粘附少;使用沃兰改性后的纤维,毛细压力值增加,树脂对纤维的浸润能力增加,同时降低了PAA树脂与石英纤维的润湿角,有效地改善了石英纤维和PAA树脂的界面结合性能,提高了其复合材料的力学性能,复合材料断裂面上纤维粘附的树脂明显增多。

关键词: 聚芳基乙炔树脂, 复合材料, 石英纤维改性, 浸润, 毛细压力

Abstract: In this paper, the surface sizing agent was removed by ablation method, and the surface grafting coupling agent was used to treat the quartz fiber with different surface treatment. Composite laminates were fabricated using different quartz fiber/PAA resin systems. The bending, interlaminar shear and compression properties were tested. The fiber infiltration, mechanical properties and cross-section morphology were compared by comparing different surface treatments. The effects of different surface treatment methods on the interfacial bonding properties of quartz fiber and PAA resin were investigated. The results show that the fiber of the sizing agent is removed, the capillary pressure value is reduced, the wetting ability of the resin to the fiber is reduced, and the wetting angle of the PAA resin and the quartz fiber is increased. The interface bonding force is lowered, and the mechanical properties of the composite material are lowered after curing. Moreover, the fiber on the fracture surface of the composite material is smooth and the resin has less adhesion. With the Wolla modified fiber, the capillary pressure value increases and the resin′s ability to infiltrate the fiber increases. At the same time, the wetting angle of PAA resin and quartz fiber is reduced, the interfacial bonding performance of quartz fiber and PAA resin is effectively improved, the mechanical properties of the composite material are improved, and the resin adhering to the fracture surface of the composite material is obviously increased.

Key words: polyarylacetylene resin, composites, modification of quartz fibers, infiltration, capillary pressur

中图分类号:

TB332

苗春卉, 翟全胜, 张晨乾, 叶宏军. 表面处理对石英纤维增强PAA树脂复合材料界面性能的影响[J]. 玻璃钢/复合材料, 2019, 0(7): 78-84.

MIAO Chun-hui, ZHAI Quan-sheng, ZHANG Chen-qian, YE Hong-jun. EFFECT OF SURFACE TREATMENT ON INTERFACIAL PROPERTIES OF QUARTZ FIBER REINFORCED PAA RESIN COMPOSITES[J]. Fiber Reinforced Plastics/Composites, 2019, 0(7): 78-84.

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