基于furfuryl glycidyl 以太和bismaleimides的高性能可逆 furan-maleimide树脂
Jiawen Wang1, Jixian Li1, Jun Zhang1
1Key Laboratory for Specially Functional Materials and Related Technology of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
Polymers
|August 26, 2023
概括
新的 furan-maleimide 树脂具有出色的热可逆性和机械强度. 这些可回收的树脂显示出高修复效率,提供可持续的材料解决方案.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 有机合成 有机合成
背景情况:
- 对可持续材料来说,可回收热固化聚合物的开发至关重要.
- furan-maleimide 化学反应为热可逆网络提供了潜在的潜力.
- 结合刚性和灵活的细分可以调整树脂的特性.
研究的目的:
- 合成和描述新的可逆-马利胺树脂.
- 研究这些树脂的热可逆性和机械性能.
- 评估合成材料的可回收性和维修效率.
主要方法:
- 合成使用furfuryl glycidyl ethers (FGE) 和bismaleimides (DBMI,HBMI) 与4,4'-diaminodiphenyl ether (ODA) 的 furan-maleimide树脂.
- 通过福利埃变换红外分析进行结构确认.
- 使用差分扫描热量计 (DSC) 和sol-gel分析进行热可逆性评估.
- 通过柔性测试对机械性能进行评估.
主要成果:
- 成功合成了两种具有鲜明刚性和灵活性结构的 furan-maleimide 树脂.
- 在90°C左右观察到的Diels-Alder (DA) 反应,在130-140°C时观察到可逆的DA反应.
- 实现了高机械性能,FGE-ODA-HBMI树脂的屈曲强度高达141 MPa.
- 经过三次热压循环后,维修效率超过75%,曲强度保持在80MPa以上.
结论:
- 合成的 furan-maleimide 树脂具有出色的热可逆性和强大的机械性能.
- 这些材料在需要可回收和可修复的应用中具有显著的潜力.
- 结合多种结构单元,使得材料的性能可以量身定制.
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