摘要
研究了不同温度、湿度环境下,夹层结构石英纤维增强环氧树脂面板/PMI泡沫夹层结构复合材料及其芯材和面板的吸湿规律。将石英纤维增强环氧树脂面板、PMI泡沫、复合材料面板/PMI泡沫夹层结构试样在不同吸湿环境中进行吸湿处理后,对其吸湿行为进行分析。结果表明:浸水环境下面板、PMI泡沫、PMI泡沫夹层结构复合材料都表现出更为严重的吸湿行为;在潮湿环境中,50℃至70℃范围内,温度越高,试样在吸湿过程中的质量损失越多,最终的饱和吸湿率越小;在60℃以内的潮湿环境中,PMI泡沫夹层结构复合材料的饱和吸湿率可以通过相同环境下面板复合材料和PMI泡沫的吸湿率进行预测。
The moisture absorption behavior of quartz fiber reinforced epoxy panel/PMI core sandwich composites under different temperature and humidity conditions was studied.The quartz fiber reinforced epoxy composite panel,PMI foam and corresponding sandwich structure specimens were treated with different conditions for moisture absorption.Properties of these specimens were studied after moisture absorption.Results show that:firstly,the saturated moisture absorptivity and the moisture absorption rates of specimens are enhanced when they are soaked in water;secondly,when specimens are subjected to moisture absorption at 50℃,60℃and 70℃,saturated moisture absorptivity of the specimens dropped more at a higher temperature because of the mass loss in moisture absorption.It was also found that,when specimens are treated in a moisture condition below 60℃,the saturated moisture absorptivity of the PMI foam cored sandwich composites can be predicted by combining the moisture absorption rates of panel and the PMI foam counterparts.
作者
刘钧
边佳燕
鲍铮
周远明
LIU Jun;BIAN Jiayan;BAO Zheng;ZHOU Yuanming(College of Aeronautics and Astronautics,National University of Defense Technology,Changsha 410073,China)
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2019年第5期193-198,共6页
Journal of National University of Defense Technology
基金
国防科技基金资助项目(3101013)
