Novel Bio-Based Recycable Epoxy Resin and Its Application in Carbon Fiber Reinforced Composite

摘要：

　　Permanently cross-linked epoxy resins have outstanding mechanical properties and solvent resistance, but they cannot be processed and reshaped once synthesized.This paper presents a new type of bio-based recycling epoxy polymer with dynamic covalent imine bond (EPI).The EPI was cured by the curing agent synthesized from lignin-derived vanillin.The EPI showed comparable mechanical and thermal properties compared with traditional epoxy resin.Through the exchange reaction of the imine bonds, the EPI can be repeatedly remolded without depolymerization and degrade in small molecule amine solution.Finally, The EPI was used to fabricate carbon fiber reinforced epoxy composite (CFRP).The CFRP demonstrated performance comparable to those of its commercial counterparts.More important, nondestructive retrieval of carbon fibers was realized through gentle depolymerization in the amine solution.

关键词： Recycling epoxy resins Carbon fiber reinforced composites Imine bonds Biopolymers

作者: Hui Zhang Wanshuang Liu Yiping Qiu Yi Wei

作者单位: Collaborative Innovation Center for Civil Aviation Composites, Donghua University, Shanghai 201620, China;Key Laboratory of Textile Science & Technology, Ministry of Education, Shanghai 201620, China

会议类型: 国际会议

会议名称: 2018 Sino-Africa International Symposium on Textiles and Apparel (SAISTA2018)(2018中非纺织服装国际论坛)

会议地点: 巴赫达尔

会议语种:英文

页码: 46-53

在线出版日期: 2018-09-15（万方平台首次上网日期，不代表论文的发表时间）