Herein, a self-healing polyacrylate system was successfully prepared by introducing crosslinking agents containing disulfide bonds and monomers capable of forming quadruple hydrogen bonds through free radical copolymerization. This polymer material exhibited good toughness and self-healing properties through chemical and physical dual dynamic networks while maintaining excellent mechanical properties, which expanded the development path of self-healing acrylate materials. Compared to uncrosslinked and single dynamically crosslinked polymers, its elongation at break was as high as 437%, and its tensile strength was 5.48 MPa. Due to the presence of dual reversible dynamic bonds in the copolymer system, good self-healing was also achieved at 60 °C. In addition, differential scanning calorimetry and thermogravimetric analysis measurements confirmed that the thermal stability and glass transition temperature of the material were improved owing to the presence of physical and chemical cross-linking networks.

中文翻译：

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基于动态二硫键和四氢键的自修复聚丙烯酸酯

在此，通过引入含有二硫键的交联剂和能够形成四重氢键的单体，通过自由基共聚成功制备了自修复聚丙烯酸酯体系。这种聚合物材料通过化学和物理双动态网络表现出良好的韧性和自修复性能，同时保持优异的机械性能，拓展了自修复丙烯酸酯材料的发展道路。与未交联和单一动态交联聚合物相比，其断裂伸长率高达437%，拉伸强度为5.48 MPa。由于共聚物体系中存在双可逆动态键，在60℃下也实现了良好的自修复。此外，差示扫描量热法和热重分析测量证实，由于物理和化学交联网络的存在，材料的热稳定性和玻璃化转变温度得到改善。