环氧树脂基交联网络微观结构调控及其热致形状记忆构效关系

项目名称： 环氧树脂基交联网络微观结构调控及其热致形状记忆构效关系

项目编号： No.21476013

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 有机化学

项目作者： 程珏

作者单位： 北京化工大学

项目金额： 87万元

中文摘要： 环氧树脂基形状记忆聚合物（SMEP）综合性能最佳，高回复应力及高回复速度SMEP因在空间可展结构材料领域具有无限潜力而成为功能材料研究热点。本研究提出调控三维交联网络微观结构规整性，调窄玻璃化转变区域，是提高SMEP回复力和回复速度的关键问题；设计和制备特种高环氧值刚柔一体化环氧树脂、含呋喃环侧基环氧树脂齐聚物和马来酰亚胺单体，采用柱分离和重结晶方法，得到单一反应物分子结构，通过呋喃环与马来酰亚胺的高选择和高效Diels-Alder反应，达到控制交联网络微观结构规整性目的；通过调控环氧树脂的刚/柔链段比例和马来酰亚胺单体结构制备多种SMEP，采用DSC、多频-应变模式DMA以及应力控制模式DMA分析玻璃化转变温度、峰宽和应力-应变-温度三维曲线，揭示SMEP交联网络微观结构与其记忆行为的构效关系。该研究结果为今后高性能SMEP乃至形状记忆聚合物设计提供新思路和基础参考数据。

中文关键词： 交联网络微观结构；构效关系；形状记忆聚合物

英文摘要： Shape memory epoxy resin (SMEP) presents the best comprehensive performance within the scope of shape memory polymer(SMP). SMEP with relatively high recovery stress and high recovery speed becomes a hot issue of functional polymers because of its unlimited potential application in air space as an stretchable materials. In this study, a new idea is proposed that regulating the microstructure of three-dimensional crosslinked network of SMEP, which narrow the glass transition region, is the key factor to enhance the performance of SMEP. And,several novel resins and monomers are designed and prepared, including novel epoxy resin with high epoxide value and integrating rigid and flexible structure units in backbone, a neat epoxide oligmers with furan rings as side groups and maleic imide monomers. The resins and monomers are purified with methods of separation on colomn and recrystallization. Furthermore, the point of controlling the regularity of the microstructure of crosslinking network is carried by means of the high selectivity and efficiency of Diels-Alder curing reaction of furan rings and maleic imide. Various microstructure SMEPs are achieved by adjusting the ratio of rigid units to flexible units in FN-BDEGA and aliphlic chain length in maleic imide. And, DSC, DMA with 'multi-frequency-strain' mode and DMA with controlled-force mode will be used to analyze the performance of SMEP, such as glass transition temperature, peak width of glass transition temperature, and stress-strain-temperature three-dimention curve. Furthermore, on the basis of the structure construction and resutant properties of SMEP, the structure-activity relationship between microstructure of network and shape memory performance of SMEP will be tried to annonced. These results and achievements will be valuable and meritorious to the design of SMEP, as well as various shape memory polymers, in the thoughts and the foundational data.

英文关键词： microstructure of network;structure-activity;shape memory polymer