材料科学
环氧树脂
复合材料
韧性
合金
熔点
聚己内酯
形状记忆合金
氢键
聚合物
分子
化学
有机化学
作者
Zhiwei Tuo,Kunzhi Chen,Qiang Zhang,Yübo Wang,Qiushi Wang,Yuyu Zhang,Zhijun Lin,Yunhong Liang
标识
DOI:10.1016/j.compscitech.2024.110510
摘要
Epoxy resin (EP) as common polymers have attracted much attention in the field of shape memory materials due to their excellent properties. However, epoxy-based shape memory polymers suffer from a trade-off between strength, toughness, variable stiffness capability and shape memory properties, and thus are subject to significant limitations in their applications. In this paper, we propose a method to prepare epoxy composites with high strength and toughness and high shape memory properties by introducing a lot of hydrogen bonds. Hydrogen bonding is generated through polycaprolactone (PCL) induced EP phase separation. A low melting point alloy (L) was also added to enhance the shape memory properties of the composites. The synthesis mechanism of EP and the formation mechanism of hydrogen bonding were revealed. The effects of the introduction of hydrogen bonding on the mechanical properties, stiffness and shape memory properties of the composites were investigated. New ideas and design directions are provided for the optimisation of modification of high-performance shape memory epoxy resins.
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