{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T01:02:05Z","timestamp":1791075725325,"version":"4.1.0"},"reference-count":40,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2023,6,16]],"date-time":"2023-06-16T00:00:00Z","timestamp":1686873600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["51603015"],"award-info":[{"award-number":["51603015"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["KM20201001702"],"award-info":[{"award-number":["KM20201001702"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002888","name":"Scientific research project of Beijing Municipal Education Commission","doi-asserted-by":"publisher","award":["51603015"],"award-info":[{"award-number":["51603015"]}],"id":[{"id":"10.13039\/501100002888","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002888","name":"Scientific research project of Beijing Municipal Education Commission","doi-asserted-by":"publisher","award":["KM20201001702"],"award-info":[{"award-number":["KM20201001702"]}],"id":[{"id":"10.13039\/501100002888","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Intrinsic self-healing polymers via dynamic covalent bonds have been attracting extensive attention because of their repeatable self-healing property. Herein, a novel self-healing epoxy resin was synthesized with disulfide-containing curing agent via the condensation of dimethyl 3,3\u2032-dithiodipropionate (DTPA) and polyether amine (PEA). Therefore, in the structure of cured resin, flexible molecular chains and disulfide bonds were imported into the cross-linked polymer networks for triggering self-healing performance. The self-healing reaction of cracked samples was realized under a mild condition (60 \u00b0C for 6 h). The distribution of flexible polymer segments, disulfide bonds and hydrogen bonds in cross-linked networks plays a great role in the self-healing process of prepared resins. The molar ratio of PEA and DTPA strongly affects the mechanical performance and self-healing property. Especially when that molar ratio of PEA to DTPA is 2, the cured self-healing resin sample showed great ultimate elongation (795%) and excellent healing efficiency (98%). The products can be used as an organic coating, in which the crack could self-repair during a limited time. The corrosion resistance of a typical cure coating sample has been testified by an immersion experiment and electrochemistry impedance spectrum (EIS). This work provided a simple and low-cost route to prepare a self-healing coating for prolonging the service life of conventional epoxy coatings.<\/jats:p>","DOI":"10.3390\/ma16124440","type":"journal-article","created":{"date-parts":[[2023,6,19]],"date-time":"2023-06-19T02:29:19Z","timestamp":1687141759000},"page":"4440","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":24,"title":["Preparation of Epoxy Resin with Disulfide-Containing Curing Agent and Its Application in Self-Healing Coating"],"prefix":"10.3390","volume":"16","author":[{"given":"Baolei","family":"Wang","sequence":"first","affiliation":[{"name":"Beijing Key Laboratory of Special Elastomeric Composite Materials, Beijing Institute of Petrochemical Technology, College of New Materials and Chemical Engineering, Beijing 102617, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zewei","family":"Li","sequence":"additional","affiliation":[{"name":"Beijing Key Laboratory of Special Elastomeric Composite Materials, Beijing Institute of Petrochemical Technology, College of New Materials and Chemical Engineering, Beijing 102617, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xinru","family":"Liu","sequence":"additional","affiliation":[{"name":"Beijing Key Laboratory of Special Elastomeric Composite Materials, Beijing Institute of Petrochemical Technology, College of New Materials and Chemical Engineering, Beijing 102617, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lulu","family":"Li","sequence":"additional","affiliation":[{"name":"Beijing Key Laboratory of Special Elastomeric Composite Materials, Beijing Institute of Petrochemical Technology, College of New Materials and Chemical Engineering, Beijing 102617, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jianxiang","family":"Yu","sequence":"additional","affiliation":[{"name":"Beijing Key Laboratory of Special Elastomeric Composite Materials, Beijing Institute of Petrochemical Technology, College of New Materials and Chemical Engineering, Beijing 102617, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuang","family":"Li","sequence":"additional","affiliation":[{"name":"Beijing Key Laboratory of Special Elastomeric Composite Materials, Beijing Institute of Petrochemical Technology, College of New Materials and Chemical Engineering, Beijing 102617, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gaiping","family":"Guo","sequence":"additional","affiliation":[{"name":"Beijing Key Laboratory of Special Elastomeric Composite Materials, Beijing Institute of Petrochemical Technology, College of New Materials and Chemical Engineering, Beijing 102617, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3128-7078","authenticated-orcid":false,"given":"Dahai","family":"Gao","sequence":"additional","affiliation":[{"name":"Beijing Key Laboratory of Special Elastomeric Composite Materials, Beijing Institute of Petrochemical Technology, College of New Materials and Chemical Engineering, Beijing 102617, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuhua","family":"Dai","sequence":"additional","affiliation":[{"name":"Beijing Key Laboratory of Special Elastomeric Composite Materials, Beijing Institute of Petrochemical Technology, College of New Materials and Chemical Engineering, Beijing 102617, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,6,16]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"655","DOI":"10.1111\/ffe.12595","article-title":"Self-healing materials: What can nature teach us?","volume":"40","author":"Dooley","year":"2017","journal-title":"Fatigue. 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