碳纤维增强用环氧树脂的湿热老化规律研究  

Study on the hydrothermal aging law of carbon fiber reinforced epoxy resins

作　　者：高建业 洪彬 高振东[1] 纪娅 李晓琴 GAO Jian-ye;HONG Bin;GAO Zhen-dong;JI Ya;LI Xiao-qin(i.Mechanical engineering institute,Tianjin Uni-versity,Tianjin 300072,Chin;Internal Combustion Engine Research Institute,Tianjin University,Tianjin 300072,China;Tianjin Tianbo science ＆ Technology Co.,Ltd,Tianjin 300034,China;Tianjin Sino-German University of Applied Sciences,Tianjin 300350,China)

机构地区：[1]天津大学机械工程学院,天津300072 [2]天津大学内燃机研究所,天津300072 [3]天津市天波科达科技有限公司,天津300034 [4]天津中德应用技术大学,天津300350

出　　处：《热固性树脂》2018年第5期56-59,共4页Thermosetting Resin

基　　金：天津市科技型中小企业技术创新项目(14ZXCXGX00331)

摘　　要：通过质量、弯曲强度和玻璃化温度测试研究了在相对湿度90％，温度分别为80，90和100℃条件下的碳纤维增强用环氧树脂的老化过程。结果表明，随湿热老化试验时间延长，环氧树脂试样质量上升，100℃下30d材料的弯曲强度保持率为87．1％，玻璃化温度下降约5℃。通过对测试结果拟合构建老化寿命模型，预测了特定类型环氧树脂在20℃，90％相对湿度环境中的使用寿命为11．4a，高温会导致其寿命急剧下降，因此较适合在常温下使用。The aging process of carbon fiber reinforced epoxy resin under the conditions of 90% relative humidity and 80,90 and 100 ~C respectively was studied by the testings of mass, flexural strength and glass transition temperature. The results showed that with the prolonged hydro-thermal aging test time, the mass of the epoxy resin sample was increasesd. The flexural strength retention rate of the material at 100℃ for 30 d was 87.1% and the glass transition temperature was decreased by about 5℃. By fitting the test results to construct the aging life model, itwas predicted that the service life of a specific type of epoxy resin in the environment of 20℃ and 90% relative humidity was 11.4 a,and the high temperature would cause a sharp decline in its life, so it was more suitable for use at normal temperature.

关 键 词：环氧树脂 碳纤维增强复合材料 湿热老化 寿命模型 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]