For the first time, reversible covalent urethane units are used for the design of new self-healing polymers. For this purpose, an electron-poor diol was synthesized and utilized as crosslinker to create a dynamic polymer network. Therefore, the diol, butyl methacrylate as well as 2-isocyanato ethyl methacrylate are intermixed and photo-polymerized in a bone-shaped PTFE mold. The resulting test specimens are characterized by DSC, TGA and DMTA and the self-healing behavior is studied using tensile tests. Thereby, healing efficiencies of up to 85% could be reached while the material exhibits good mechanical properties with high

E-moduli. Additionally, the self-healing mechanism, which is based on exchange reactions of the reversible urethane moieties, is investigated by Raman as well as temperature dependent IR measurements.

可逆的共价氨基甲酸酯单元首次用于新型自修复聚合物的设计。为此目的，合成了贫电子二醇并将其用作交联剂以建立动态聚合物网络。因此，将二醇，甲基丙烯酸丁酯以及甲基丙烯酸2-异氰酸根合乙酯在骨形PTFE模具中混合并光聚合。用DSC，TGA和DMTA对所得试样进行表征，并使用拉伸试验研究其自愈性能。从而，在材料表现出良好的机械性能和高强度的同时，可以达到高达85％的愈合效率。

电子模量 另外，通过可拉曼以及依赖于温度的IR测量，研究了基于可逆氨基甲酸酯部分的交换反应的自修复机制。