Highly Conductive Poly(Imide–Imine)Hybrid Vitrimer-Graphene Aerogel Composites  

作　　者：Yunlong Ma Ruiyang Li Shichang Luo Xiran Shen Rao Tao Yinghua Jin Wei Zhang Li Qiu 

机构地区：[1]Yunnan Key Laboratory for Micro/Nano Materials&Technology,National Centerfor International Research on Photoelectric and Energy Materials,Schoolof Materialsand Energy,Yunnan University,Kunming,Yunnan 650091,China [2]Department of Chemistry,University of Colorado Boulder,Boulder,Colorado 80309,USA

出　　处：《Chinese Journal of Chemistry》2023年第17期2125-2131,共7页中国化学（英文版）

基　　金：supported by the National Natural Science Foundation of China(21875208,51962036);Key Project of the Natural Science Foundation of Yunnan(Grant 202201AS070011);High-Level Talents Introduction in Yunnan Province(C619300A025).

摘　　要：Comprehensive Summary,Although polyimides(PIs)have shown great potential for a broad range of applications,it remains very challenging to achieve the malleability,rehealability and recyclability for PIs and their composites targeting various applications,particularly for the rapidly emerging flexible and stretchable electronics.Herein,malleable conductive poly(imide-imine)hybrid(PIIH)vitrimer-graphene aerogel(GA)composites have been prepared,for the first time,via simple sol-gel film formation followed by heat-press.The resulting PIIH-GA composites exhibit not only the highly desired properties of thermosetting(strong mechanical strength)and thermoplastic(reprocessability)polymers,but also good conductivity enabled by the GA filler.PIIH3-GA-10(with 10 wt%GA)showed one of the highest electrical conductivities(26.7 S/m)for PI-based composites,as well as good electromagnetic interference(EMI)shielding performance.Moreover,the PIIH-GA films could maintain good performance during stretching and even after chemical recycling,which opens new opportunities for flexible and sustainable electronics development.

关 键 词：Sol-gel processes Thin films Sustainable chemistry Polyimide thermoset Dynamic covalent bond/Recyclable polymers EMI shielding 

分 类 号：TQ427.26[化学工程]