文献类型：期刊文献

英文题名：Self-Healing Epoxy Resin Incorporating Flexible Siloxane and Exchangeable Disulfide Crosslinks

作者：Xu, Faou[1];Li, Chengpeng[1];Zhang, Tong[1]

机构：[1]Guangdong Ocean Univ, Sch Chem & Environm Sci, Zhanjiang, Peoples R China

年份：2025

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：SCI-EXPANDED(收录号：WOS:001570560700001)、、EI(收录号：20253719153405)、Scopus(收录号：2-s2.0-105015474849)、WOS

基金：This work was supported by the Guangdong Basic and Applied Basic Research Foundation (Project No. 2024A1515011601), National Innovation and Entrepreneurship Training Program (Project No. 010403122301) and Scientific Research Start-up Funds of Guangdong Ocean University (Project No. 060302122103).

语种：英文

外文关键词：copolymers; mechanical properties; resins; structure-property relationships

外文摘要：Traditional epoxy resins are widely used in various applications due to their excellent performance. However, their highly stable cross-linked networks prevent autonomous repair after mechanical damage, thereby limiting their long-term durability. Herein, a novel epoxy system (EDA-X) was produced through copolymerization of bisphenol A epoxy resin (E51) with siloxane containing epoxy groups (DGETDS), using an amine curing agent (AFD) containing dynamic disulfide bonds. The single glass transition temperature confirmed excellent epoxy-silicone compatibility. The effects of DGETDS and AFD content on the mechanical and self-healing properties were systematically investigated. The results demonstrated that more flexible siloxane and dynamic disulfide bonds enhance the self-healing efficiency while reducing mechanical strength. Notably, EDA-7 obtained appropriate mechanical strength (59.21 +/- 1.50 MPa), outstanding self-healing efficiency (similar to 86.18%) and good reprocessability. This work provides an efficient strategy for designing high-performance self-healing epoxy resins.