【作者】 夏和生； 杨莉； 赵健；

【Author】 XIA Hesheng;YANG Li;ZHAO Jian;State Key Laboratory of Polymer Materials Engineering,Polymer Research Institute,Sichuan University;

【机构】 高分子材料工程国家重点实验室,四川大学高分子研究所；

【摘要】 <正>自修复材料是一类拥有结构上自愈合能力的智能材料。其研究由早期的外植型自修复发展到本征型自修复。本征型自修复材料指材料基体本身具有动态可逆破坏一修复的能力。相较埋植型自修复体系,本征型自修复不需要植入特制的空心纤维或微胶囊结构,理论上这种自修复材料能对同一个受损处进行多次重复修复,优点是不需要考虑外加物质与基体的相容更多还原

【Abstract】 Furan fimctionalized polyethylene glycol(F-PEG-F) and tris(2-maleimdoethyl)amine(TMEA) were synthesized to prepare the dynamic cross-linked material by DA reaction.The3 D image showed that the incision repaired at a relatively low temperature,which demonstrated this material has good shelf-healing property.In addition,with the increase of crosslinking agent content,tensile strength of the material increased,and with the increase of PEG molecular weight,tensile strength decreased slightly,when the molecular weight of polyethylene glycol(PEG) was 6000,crosslinking content was 45%,the tensile strength of the material was 1.27 MPa,the elongation at break was 44%.Also,under 60 ℃,the repair rate can reach 90%.更多还原