Affiliation:
1. Frontiers Science Center for Flexible Electronics (FSCFE) Research & Development Institute of Northwestern Polytechnical University in Shenzhen Ningbo Institute of Northwestern Polytechnical University Northwestern Polytechnical University 127 West Youyi Road Xi'an 710072 China
2. School of Information and Science Technology Northwest University 1 Xuefu Street Xi'an 710127 China
Abstract
AbstractPhoto‐curing 3D printing technology has promoted the advanced manufacturing in various fields, but has exacerbated the environmental crisis by the demand for the chemically cross‐linked thermosetting photopolymers. Here, the authors report a generic strategy to develop catalyst‐free dynamic thermosetting photopolymers, based on photopolymerization and transesterification, that can enable users to realize repeatable 3D printing, providing a practical solution to the environmental challenges. That the β‐carbonyl group adjacent to the ester group greatly accelerates the rate of transesterification is demonstrated. The generated resins from the immobilization of the catalyst‐free reversible bonds into the photopolymers leads to a dynamic covalently crosslinked network structure upon UV based 3D printing, which exhibit controllable mechanical properties with elastomeric behaviors to thermadapt shape memory polymers. Furthermore, the resulting network can be reverted into an acrylate‐functioned photopolymer that is suitable for 3D printing again, presenting an on‐demand, repeatedly recyclable thermosetting photopolymer platform for sustainable 3D printing.
Funder
National Natural Science Foundation of China
Science, Technology and Innovation Commission of Shenzhen Municipality
Natural Science Foundation of Ningbo
Northwestern Polytechnical University
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Cited by
24 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献