| 基于可逆动态共价化学的新型可修复、可回收、可加工环氧树脂 |
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| 引用本文： | 杨广杰,潘李李,李晓娟,邓文秀,刘习奎.基于可逆动态共价化学的新型可修复、可回收、可加工环氧树脂[J].医学教育探索,2017,30(2):215-220. |
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| 作者姓名： | 杨广杰 潘李李 李晓娟 邓文秀 刘习奎 |
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| 作者单位： | 四川大学高分子科学与工程学院, 成都 610065,四川大学高分子科学与工程学院, 成都 610065,四川大学高分子科学与工程学院, 成都 610065,四川大学高分子科学与工程学院, 成都 610065,四川大学高分子科学与工程学院, 成都 610065 |
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| 基金项目： | 国家自然科学基金（21174089，21674068）；聚合物分子工程国家重点实验室基金（K2013-23） |
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| 摘 要： | 利用生物来源的二聚脂肪酸为原料，合成了二聚酸酰肼和二聚酸酰腙两种衍生物，并进一步以其作为环氧E-44树脂固化剂，得到了新型的含动态共价连接的热固性环氧树脂。采用傅里叶红外光谱（FT-IR）、差式扫描量热（DSC）、扫描电子显微镜（SEM）、热重（TG）和动态力学分析（DMA）等多种测试手段对环氧树脂固化过程以及固化后材料的结构与性能关系进行了详细表征，特别研究了动态亚胺键对热固性环氧树脂性能的独特影响。结果表明：与传统环氧树脂相比，改性后的环氧树脂有更好的韧性，且其玻璃化转变温度及热稳定性没有明显下降。在升温和加压的条件下，酸可催化亚胺键的动态交换反应，赋予传统环氧树脂以全新的可修复、可回收与可多次加工性能。
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| 关 键 词： | 环氧树脂 动态共价键 自修复 可加工 |
| 收稿时间： | 2016/1/11 0:00:00 |
New Healable, Recyclable and Malleable Epoxy Resin Based on Dynamic Imine Bonding |
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| YANG Guang-jie,PAN Li-li,LI Xiao-juan,DENG Wen-xiu and LIU Xi-kui.New Healable, Recyclable and Malleable Epoxy Resin Based on Dynamic Imine Bonding[J].Researches in Medical Education,2017,30(2):215-220. |
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| Authors: | YANG Guang-jie PAN Li-li LI Xiao-juan DENG Wen-xiu and LIU Xi-kui |
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| Institution: | College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China,College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China,College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China,College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China and College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China |
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| Abstract: | Epoxy resins were synthesized through the cure agents of hydrazide and acylhydrazone derived from fatty dimer acid. The curing behavior, structure and properties of the cured epoxy resins were characterized by Fourier transform infrared spectroscopy, differential scanning calorimetry, scanning electron microscope, thermogravimetric analysis and dynamic mechanical analysis. The unique properties of the imine dynamic covalent bond of the network material were studied. The modified epoxy resins show improved toughness. Besides, the glass transition temperature (Tg) and thermal stability don''t reduce dramatically compared to traditional epoxy resin. When the cured epoxy resin is treated at elevated temperature or enough pressure, the acid can catalyze dynamic imine exchange reaction and make the material smart response for temperature and pH. |
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| Keywords: | epoxy thermosets dynamic covalent bond self-healing malleable |
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