文献类型：期刊文献

英文题名：Hyperbranched polyester catalyzed self-healing bio-based vitrimer for closed-loop recyclable carbon fiber-reinforced polymers

作者：Xu, Yazhou[1,2] Zhang, Haibo[1] Dai, Songlin[1] Xu, Shichao[1] Wang, Jing[1,2] Bi, Liangwu[1,3] Jiang, Jianxin[2] Chen, Yuxiang[1,3]

第一作者：Xu, Yazhou;许玉芝

通信作者：Wang, J[1];Chen, YX[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Natl Engn Lab Biomass Chem Utilizat, Nanjing 210042, Peoples R China;[2]Beijing Forestry Univ, Coll Mat Sci & Technol, Beijing 100083, Peoples R China;[3]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Res, Nanjing 210037, Peoples R China

年份：2022

卷号：228

外文期刊名：COMPOSITES SCIENCE AND TECHNOLOGY

收录：;EI(收录号：20223412591311);Scopus(收录号：2-s2.0-85135889207);WOS:【SCI-EXPANDED(收录号:WOS:000850113500004)】；

基金：This work was supported by the National Key Research and Devel- opment Program of China (2016YFD0600804) .

语种：英文

外文关键词：Carbon fiber-reinforced polymers; Rosin; Bio -based vitrimer; Autocatalysis; Closed-loop recycling

摘要：Closed-loop recycling in the matrix resin and carbon fibers (CFs) of carbon fiber-reinforced polymers (CFRPs) is a major challenge. To solve this problem, herein, a closed-loop recyclable vitrimer matrix containing hydroxyterminated hyperbranched polyesters (HBPs), rosin-derived fumaropimaric acid (FPA), and glycerol triglycidyl ether (GTE) is prepared. The FPA/GTE/HBP vitrimers exhibited excellent mechanical properties owing to the highly reactive hydroxyterminated HBP and rigid FPA. The abundant hydroxyl groups of HBP catalyzed the dynamic transesterification reaction of the vitrimer network, resulting in self-healing and reprocessing proper-ties. In addition, FPA/GTE/HBP-CF composites exhibited high mechanical strength and interlayer shear strength owing to the presence of HBP. FPA/GTE/HBP15-CF was degraded by ethylene glycol during the catalytic operation of the hydroxy-terminated HBP, and the degraded matrix could be closed-loop recycled. Scanning electron microscopy, Raman analysis, and tensile testing showed that the degradation reaction did not degrade the properties of the recycled CFs. This study presents an environmentally-friendly strategy for pre -paring closed-loop recyclable CFRPs.