摘要
以自研环氧树脂体系为基体,一种多官能苯酚型环氧树脂为体系改性剂,采用熔融共混法制备了新型自黏性环氧树脂体系,并采用该树脂制备了玻璃纤维织物增强环氧树脂复合材料,重点研究了不同改性剂含量对复合材料热性能及粘接性能的影响。结果表明,相比原有树脂体系,多官能苯酚型环氧树脂的引入能够提高复合材料的玻璃化转变温度,也会导致滚筒剥离强度下降。当多官能苯酚型环氧树脂的含量为20%时,复合材料的玻璃化转变温度由151.9℃提高到172.6℃,滚筒剥离强度由56.88(N·mm)/mm下降到39.5(N·mm)/mm,能够满足蜂窝夹层结构设计指标要求,具有良好的工程应用前景。
With self-made epoxy resin as the matrix,a multifunctional hydroxyl phenyl epoxy as modifier,a new self-adhesive epoxy resin was prepared by melt-mixing method.The glass fiber reinforced epoxy resin compos⁃ite was prepared using this resin.The effect of different contents of modifier on thermal and bonding properties of ep⁃oxy composites was investigated.The results indicate that the addition of multifunctional hydroxyl phenyl epoxy is beneficial to the increase of glass-transition temperature and decrease of the drum peel strength in the meantime.When the weight ratio of multifunctional hydroxyl phenyl epoxy is 20%,the glass-transition temperature increases from 151.9℃to 172.6℃and the drum peel strength decreases from 56.88(N·mm)/mm to 39.5(N·mm)/mm,which can meet the design index requirements of honeycomb sandwich structures and has good engineering ap⁃plication prospects.
作者
闫鸿琛
石峰晖
张宝艳
马兆丹
王婷婷
YAN Hongchen;SHI Fenghui;ZHANG Baoyan;MA Zhaodan;WANG Tingting(Center of Composite Technology,AVIC Manufacturing Technology Institute,Beijing 101300,China)
出处
《复合材料科学与工程》
CAS
北大核心
2023年第8期34-38,共5页
Composites Science and Engineering
