热氧环境对单向碳纤维增强聚合物基复合材料的影响  

Effect of Thermal-oxidative Environment on Unidirectional Carbon Fiber Reinforced Composites

作　　者：王云英[1] 向东东[1] 孟江燕[1] 丁祖群[2] 李超[2] 

机构地区：[1]无损检测技术教育部重点实验室(南昌航空大学),南昌330063 [2]中航工业成都飞机工业集团公司复合材料厂,成都610092

出　　处：《工程塑料应用》2012年第11期64-68,共5页Engineering Plastics Application

基　　金：航空科学基金(2010ZF56025);航空检测与评价航空科技重点实验室项目(ZK200929002)

摘　　要：用热压罐制备了单向碳纤维增强双马来酰亚胺复合材料(5429/T700),对复合材料进行了最长90 d的150℃热氧环境处理,观察和测试了不同处理时间的复合材料的红外光谱、质量变化、表面形貌、断口形貌、动态力学性能、弯曲强度和面内压缩强度。研究结果表明:在热氧环境处理90 d后,复合材料的红外峰值未显示新特征峰,可能是因为树脂基体中未形成新的基团;树脂基体的玻璃化转变温度、复合材料的弯曲强度和面内压缩强度均发生变化,总体上有所升高,且变化规律具有分形特征,其分形维数分别为1.04和1.02。The unidirectional carbon fiber / bismaleimide resin matrix composites （ 5429 / T700 ） were made by autoclave. The composites was thermal-oxidative treated at 150℃ for 90 days, the infrared spectrometry, weight loss, surface morphologies, fracture morphologies, dynamic mechanical properties （ DMA ）, fiexural strength and in-plane compressive strength of 5429 / T700 composites treated different time were investigated. The results showed that new characteristic peaks were not been found in the infrared spectrometry of the composites, it was proved that the matrix had not generated new group, and Tg of the BMI, the flexural strengths, in-plane compressive strength of the composites changed, and all increased after treated for 90 days. There was a fractal characteristic in the changes of flexural strengths and in-plane compressive strength, and the fractal dimensions were 1.04 and 1.02.

关 键 词：单向碳纤维 双马来酰亚胺树脂 热氧环境处理 弯曲强度 面内压缩强度 

分 类 号：V258.3[一般工业技术—材料科学与工程] N93[航空宇航科学与技术—航空宇航制造工程]