PBO纤维/环氧树脂复合材料的制备及物理性能  

Preparation and physical properties of PBO fiber/epoxy resin composite

作　　者：李文燕[1] 谭艳君[1] 刘姝瑞 霍倩[1] 马佳利 LI Wenyan;TAN Yanjun;LIU Shurui;HUO Qian;MA Jiali(Institute of Textiles and Materials, Xi'an Polytechnic University, Xi'an 710048, China)

机构地区：[1]西安工程大学纺织与材料学院,陕西西安710048

出　　处：《染整技术》2017年第7期34-39,52,共7页Textile Dyeing and Finishing Journal

摘　　要：根据PBO纤维的优良性能及其较差的抗紫外性,制备出PBO纤维增强环氧树脂基复合材料,并研究其力学性能及其他性能。通过单因素试验确定合成复合材料的最佳条件:m(基体树脂)∶m(固化剂)[m(环氧树脂)∶m(聚酰胺树脂)]=1∶1、纤维质量分数为7%时,复合材料的断裂强度最佳。同时,还采用等离子体处理PBO纤维来增强PBO纤维与环氧树脂基的界面粘结性能。通过单因素试验得出最佳等离子体处理工艺条件:放电电压13 Pa、处理时间220 s、放电功率185 W。利用扫描电子显微镜、热失重分析仪、热机械分析仪、紫外透射分析仪等对复合材料的结构性能进行分析。结果表明:等离子体处理后,纤维与树脂之间的界面粘结性得到提高;PBO纤维的热分解性能被降低;抗紫外性能得到了显著提升。而环氧基复合材料的抗紫外性能、耐热性能、机械性能等都得到显著提升。According to the excellent performance and poor UV resistance of PBO fiber, the PBO fiber reinforced epoxy resin composites were prepared, and the mechanical property and other properties were also investigated. The optimal condition for synthesizing the composites was determined by the single factor experiment. It was found that the optimal fracture strength of the composites was able to be obtained when the ratio of matrix resin and curing agent （i.e., epoxy resin： polyamide resin） was 1：1 and fiber content was 7%. Besides, plasma treatments were used to enhance the interfacial adhesion properties of PBO fiber and epoxy resin matrix. The optimum condition of the plasma treatment was also determined by the single factor experiment, which was as follows： discharge voltage 13 Pa, treatment time 220 s and discharge power 185 W. The structural performance of the composites were analyzed by scanning electron microscopy, thermogravimetric analyzer, thermal mechanical analyzer, UV transmission analyzer, etc.. The results showed that the interfacial adhesion property between fiber and resin was improved after plasma treatment; as well as its UV resistance performance, while the thermal decomposition performance of PBO fiber was reduced. The UV resistance, heat resist- ance, mechanical properties of epoxy composites were significantly improved.

关 键 词：PBO纤维 环氧树脂 等离子体 抗紫外性能 

分 类 号：TS102.5[轻工技术与工程—纺织工程]