Liu Wenhao, Sun Zhe, Ren Hao, Wen Xiaomu, Wang Wei, Zhang Tianfu, Xiao Lei, Zhang Guangpu
National Special Superfine Powder Engineering Research Center of China, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
Science and Technology on Transient Impact Laboratory, No. 208 Research Institute of China Ordnance Industries, Beijing 102202, China.
Polymers (Basel). 2023 Dec 8;15(24):4646. doi: 10.3390/polym15244646.
Ultraviolet (UV)-curing technology as a photopolymerization technology has received widespread attention due to its advantages of high efficiency, wide adaptability, and environmental friendliness. Ultraviolet-based 3D printing technology has been widely used in the printing of thermosetting materials, but the permanent covalent cross-linked networks of thermosetting materials which are used in this method make it hard to recover the damage caused by the printing process through reprocessing, which reduces the service life of the material. Therefore, introducing dynamic bonds into UV-curable polymer materials might be a brilliant choice which can enable the material to conduct self-healing, and thus meet the needs of practical applications. The present review first introduces photosensitive resins utilizing dynamic bonds, followed by a summary of various types of dynamic bonds approaches. We also analyze the advantages/disadvantages of diverse UV-curable self-healing polymers with different polymeric structures, and outline future development trends in this field.
紫外光固化技术作为一种光聚合技术，因其具有高效、适应性广和环境友好等优点而受到广泛关注。基于紫外光的3D打印技术已广泛应用于热固性材料的打印，但该方法中使用的热固性材料的永久共价交联网络使得难以通过再加工来修复打印过程造成的损伤，从而降低了材料的使用寿命。因此，在紫外光固化聚合物材料中引入动态键可能是一个明智的选择，这可以使材料进行自我修复，从而满足实际应用的需求。本综述首先介绍利用动态键的光敏树脂，接着总结各种类型的动态键方法。我们还分析了具有不同聚合物结构的各种紫外光固化自修复聚合物的优缺点，并概述了该领域未来的发展趋势。
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