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j.issn.1674-3962.202212020]
點擊復制

基于咪唑脲鍵和銅離子配位鍵的自愈合聚氨酯()

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中國材料進展[ISSN:1674-3962/CN:61-1473/TG]

卷:: 42
期數:: 2023年第07期

頁碼:: 566-573

欄目:

出版日期:: 2023-07-31

文章信息/Info

Title:: Self-Healing Polyurethane Based on Imidazole-Urea Bond and Cu(II)Coordination Bond

文章編號:: 1674-3962(2023)07-0566-08

作者:: 張幼維1; 朱文凡1; 李闖2; 楊磊1; 玉姣3; 游正偉1; 1.東華大學材料科學與工程學院纖維材料改性國家重點實驗室，上海 201600 2.江蘇萬盛大偉化學有限公司，江蘇泰興 225400 3.遼寧石油化工大學遼寧省新型微納米功能材料研究重點實驗室, 遼寧撫順 113001

Author(s):: ZHANG Youwei1; ZHU Wenfan1; LI Chuang2; YANG Lei1; YV Jiao3; YOU Zhengwei1; 1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201600, China 2. Jiangsu Wansheng Dawei Chemical Co., Ltd., Taixing 225400, China 3. Liaoning Provincial Key Laboratory of Novel Micro-Nano Functional Materials, Liaoning PetrochemicalUniversity, Fushun 113001, China

關鍵詞:: 自愈合; 聚氨酯; 配位鍵; 咪唑脲鍵; 彈性體

Keywords:: self-healing; polyurethane; coordination bond; imidazole-urea bond; elastomers

分類號:: O631

DOI:: 10.7502/j.issn.1674-3962.202212020

文獻標志碼:: A

摘要:: 將2,2-二咪唑甲烷（BIM）和聚四氫呋喃二醇（PTMG）與異佛爾酮二異氰酸酯（IPDI）反應制備了含有動態咪唑脲鍵（BIMU）的線性結構的自愈合聚氨酯彈性體（BIMU-LPU）。將Cu(II)引入到聚合物網絡中，BIMU-LPU通過咪唑與銅離子形成配位化合物而構建了具有物理交聯結構的聚氨酯彈性體（Cu-BIMU-LPU）。利用核磁共振氫譜和傅里葉紅外光譜對材料結構進行表征，采用動態熱機械分析儀和熱重分析儀對材料熱學性能進行表征，通過升溫紅外光譜對咪唑脲鍵的高溫解離性進行分析，利用電子萬能材料試驗機測試材料的力學和自愈合性能，通過循環拉伸試驗考察材料彈性。結果表明，合成的Cu-BIMU-LPU具有高拉伸性（（1230±93）%）和良好的拉伸強度（(7.31±0.98) MPa），在70 ℃下愈合2 h后恢復了原始拉伸強度的（95.1±2.9）%。之后將Cu-BIMU-LPU作為鞘層材料制備了包裹鎵銦錫共熔合金的復合導線。該復合導線切斷愈合后，可以在拉伸至原始長度2倍以上時點亮發光二極管，展現了該材料在柔性電子器件領域的良好應用前景。

Abstract:: Self-healing polyurethane elastomers (BIMU-LPU) with linear structures containing dynamic imidazolium-urea bonds (BIMU) were prepared by reacting 2,2-diimidazolylmethane (BIM) and poly(tetrahydrofuran)glycol (PTMG) with isoflurane diisocyanate (IPDI). Introduction of Cu (II) into the polymer network of BIMU-LPU constructed a polyurethane elastomer (Cu-BIMU-LPU） with a physical cross-linking structure through the formation of coordination compounds between imidazole and copper ions. The structure of the material was characterized using nuclear magnetic resonance hydrogen spectroscopy and Fourier infrared spectroscopy, the thermal properties of the material were characterized using dynamic thermo-mechanical analyzer and thermogravimetric analyzer, the high-temperature dissociation of imidazoliumurea bonds was analyzed by elevated temperature infrared spectroscopy, the mechanical and self-healing properties of the material were tested using an electronic universal material testing machine, and the elasticity of the material was examined by cyclic tensile tests. The results showed that the synthesized Cu-BIMU-LPU had high tensile ((1230±93)%) and good tensile strength (（7.31±0.98) MPa), and recovered (95.1±2.9)% of the original tensile strength after healing at 70 ℃ for 2 h. Composite conductor wrapped with gallium-indiumtin eutectic alloy were subsequently prepared by using Cu-BIMU-LPU as the sheath material. The composite conductor could light up the light-emitting diode when it was stretched to more than two times of the original length after cutting and healing, showing the good application prospect of this material in the field of flexible electronic devices.

參考文獻/References:

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備注/Memo

備注/Memo:: 收稿日期：2022-12-18修回日期：2023-02-01 基金項目：國家自然科學基金項目(52173117,12074160)；上海市 “科技創新行動計劃”“一帶一路”國際合作項目(205207 41000) 第一作者：張幼維，女，1974年生，教授，博士生導師朱文凡，男，1997年生，碩士研究生通訊作者：游正偉，男，1978年生，教授，博士生導師， Email: zyou@dhu.edu.cn

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