热氧老化对炭纤维/双马树脂复合材料力学性能的影响  

Influence of thermal-oxidative aging on mechanical property of carbon fiber bismaleimide resin composites

作　　者：许良 黄国栋 马少华 回丽 费昺强[1] 

机构地区：[1]沈阳航空航天大学机电工程学院,沈阳110136 [2]沈阳航空航天大学航空制造工艺数字化国防重点实验室,沈阳110136

出　　处：《固体火箭技术》2017年第6期770-775,共6页Journal of Solid Rocket Technology

基　　金：辽宁省教育厅项目(L201611)

摘　　要：通过对炭纤维增强复合材料进行150℃和210℃下的高温老化试验,分析了该复合材料在不同老化温度下的失重率、层间剪切性能、动态力学性能和红外光谱图等。结果表明,老化初期该复合材料的质量损失很快,层间剪切强度有所提高;随着老化时间的增加,老化温度为150℃下的老化失重率逐渐趋于平稳,层间剪切强度先下降、后略微增加,该温度下只发生物理老化;老化温度为210℃下的老化失重率仍缓慢增加,在该温度下,既发生物理老化,又有化学老化,树脂基体被氧化降解,导致基体和界面性能退化,使其层间剪切强度连续下降。The experiment of thermal-oxidative aging on carbon fiber reinforced composite material at 150 ℃ and 210℃ was carried out to analyze weight loss, inter laminar shear properties, dynamic mechanical properties and infrared spectra of this compos- ite at different aging temperature.The results show that early aging of the composite has mass loss quickly, while the inter laminar shear strength has been improved.With the increase of aging time ,the mass loss rate at 150℃ gradually tends to stabilize, and the inter laminar shear strength increases slightly after fall first.There is only physical aging at 150℃ aging temperature. The mass loss rate still increase at the aging temperature 210℃, and physical aging and chemical aging occurs at the same time.The degradation of resin matrix oxidative result in performance of matrix and interface degenerate, making inter laminar shear strength continuously decline.

关 键 词：炭纤维增强复合材料 热氧老化 层间剪切强度 物理老化 化学老化 

分 类 号：TB332[一般工业技术—材料科学与工程]