Development of self-healing UV-curable coatings from biorenewable resources is of great significance for sustainable development and environmental protection. In this work, a biobased UV-curable oligomer was firstly synthesized by ring-opening reaction of epoxidized rubber seed oil with glycidyl methacrylate-modified itaconic acid precursor. Chemical structure of the obtained oligomer was then characterized by FT-IR, ¹H NMR, and gel permeation chromatography. Subsequently, a series of UV-curable coatings were prepared by co-photopolymerization of the oligomer with the hydroxyethyl methacrylate diluent. UV-curing behaviors, biobased contents, and ultimate properties such as thermal, mechanical, and coating properties were studied. Furthermore, dynamic transesterification reactions were activated at elevated temperatures in the presence of a Zinc catalyst, thus self-healing, shape memory, malleable, and recyclable properties were further investigated. Notably, the obtained UV-curable coatings demonstrated good self-healing properties (86–100% at 200 °C for 30 min), high biobased contents (45.4–72.3%), and high performance (tensile strength and glass transition temperature up to 22.4 MPa and 119.2 °C, respectively).

利用生物可再生资源开发具有自修复能力的紫外线固化涂料，对可持续发展和环境保护具有重要意义。在这项工作中，首先通过环氧化橡胶籽油与甲基丙烯酸缩水甘油酯改性衣康酸前体的开环反应合成了一种生物基紫外光固化低聚物。所得低聚物的化学结构随后通过 FT-IR 表征，¹H NMR和凝胶渗透色谱。随后，通过低聚物与甲基丙烯酸羟乙酯稀释剂的共光聚合制备了一系列紫外线固化涂料。研究了紫外线固化行为、生物基含量和最终性能，如热、机械和涂层性能。此外，动态酯交换反应在锌催化剂的存在下在升高的温度下被激活，从而进一步研究了自修复、形状记忆、延展性和可回收特性。值得注意的是，所获得的紫外线固化涂料表现出良好的自愈性能（200°C 下 30 分钟 86-100%）、高生物基含量（45.4-72.3%）和高性能（拉伸强度和玻璃化转变温度高达分别为 22.4 MPa 和 119.2 °C）。