玻璃钢/复合材料Issue(5)：11-15,5.
超声波在线监测环氧树脂中温固化过程实验研究
EXPERIMENTAL STUDY OF ONLINE MONITORING CURING PROCESS OF EPOXY RESIN UNDER MEDIUM TEMPERATURE CONDITION BY ULTRASONIC TECHNIQUE
摘要
Abstract
Ultrasonic transmission technique is successfully employed to real-time online monitor curing process of epoxy resin under different conditions.The relationship between ultrasonic amplitude attenuation and curing time of epoxy resin as well as the effect of mould thickness and glass fiber on the curing reaction process of epoxy resin under medium temperature are investigated,respectively.Experimental results indicate that ultrasonic attenuation firstly increases then decreases and finally tends to be stable.As the curing reaction proceeds,the appeared time of gel point and the phase change process transformed from viscous-gel state to gel-glass state can be accurately measured by ultrasonic attenuation.It is shown that the curing time can be shorten by raising temperature,the appeared time of gel point can be delayed by adding thickness and glass fiber in some degree and their mechanisms are discussed.The ultrasonic online monitoring can provide a theoretical basis and important technical support for the molding and processing technology of epoxy resin composite materials.关键词
超声波/环氧树脂/固化反应/玻璃纤维/振幅衰减Key words
ultrasonic/epoxy resin/curing reaction/glass fiber/attenuation分类
通用工业技术引用本文复制引用
胡焱,黄贵飞,梁科,谢家雨..超声波在线监测环氧树脂中温固化过程实验研究[J].玻璃钢/复合材料,2017,(5):11-15,5.基金项目
国家自然科学基金民航联合基金重点项目(U1233202) （U1233202）
中国民航飞行学院校基金(J2012-23) （J2012-23）
中国民用航空飞行学院研究生创新项目(X2016-39) （X2016-39）
