摘要
分别采用SEM、AFM、XPS和TGA对两种国产T700碳纤维和国外东丽T700S碳纤维的表面形貌、表面化学特性以及碳纤维上浆剂耐热性进行了表征,通过纤维性能转化率的计算,考查了T700碳纤维/双马复合材料的界面粘结性能,并通过T700碳纤维/双马复合材料湿热条件处理前后的0o拉伸强度和层间剪切强度测试对复合材料的耐湿热性能进行了表征。研究发现T700碳纤维的表面粗糙度和活性官能团含量等表面特性对双马复合材料的界面粘结性能具有显著影响,进而在一定程度上影响着双马复合材料的耐湿热性能。研究结果表明:国产T700碳纤维/双马树脂复合材料的耐湿热性优于国外同类T700碳纤维双马复合材料。
To analyze the hygrothermal perfor-mance of domestic T700 grade carbon ifber/BMI compos-ites, scanning electronic microscopy （SEM）, atomic force microscopy （AFM）, X-ray photoelectron spectroscopy （XPS）, thermogravimetry analysis （TGA） are selected to characterize the surface morphology as well as surface chemical properties of carbon fibers and the heat resis-tance of sizing agent, and the 0o tensile strength and ILSS of composites before and after hygrothermal treatment is investigated . The results show that the surface rough-ness and the content of the reactive functional groups of carbon ifbers have an important inlfuence to the interfacial bonding properties of composites,simultaneously,they also impact on the hygrothermal of the BMI composites to some extent. All the results indicate that hygrothermal performance of domestic T700 grade carbon fiber/BMI composites is superior to Toray T700S carbon fiber/BMI composites’.
出处
《航空制造技术》
北大核心
2014年第3期90-94,97,共6页
Aeronautical Manufacturing Technology
关键词
T700级碳纤维
复合材料
界面
力学性能
湿热处理
T700 grade carbon
Fiber Composites
Interface
Mechanical properties
Hygrothermal treat-ment
