Materials with high bio-content have gradually replaced petroleum-based materials due to their sustainability, low cost, low toxicity and excellent performance in the field of UV-LED curable coatings. A novel tung oil-based methacrylate (TDMM) with low viscosity and multiple photopolymerizable methacrylates was designed and synthesized through three steps containing amidation, thiol-ene click reaction and esterification. The reaction conditions for thiol-ene click reaction were optimized by calculating double bond conversion and degree of functionalization of polyols. The chemical structures of the as-prepared TDMM were characterized by ¹H NMR and FTIR. The rheological behavior analysis indicated that TDMM exhibited lower viscosity than petrochemical-based reactive diluent pentaerythritol triacrylate (PETA). Subsequently, TDMM showed good copolymerization ability with soybean oil-based reactive monomer (AESO) under the “green + green” UV-LED curable systems with high bio-content (61–81% in theory). The TDMM/AESO systems showed higher T_g but lower thermal stability, better modulus and tensile strength than the neat AESO. Besides, the UV-LED cured coatings exhibited excellent physical and chemical properties. This bio-renewable tung oil-based monomer is shown to be an effective reactive diluent and considered to have good potential in the development of the UV-LED curable coatings.

具有高生物含量的材料由于其可持续性，低成本，低毒性以及在UV-LED固化涂料领域中的出色性能，已逐渐取代了石油基材料。通过酰胺化，硫醇-烯点击反应和酯化三个步骤，设计并合成了一种新型的低粘度桐油基甲基丙烯酸酯（TDMM）和多种可光聚合的甲基丙烯酸酯。通过计算双键转化率和多元醇的官能度，优化了硫醇-烯点击反应的反应条件。所制备的TDMM的化学结构的特征为¹1 H NMR和FTIR。流变行为分析表明，TDMM的粘度低于石化基反应性稀释剂季戊四醇三丙烯酸酯（PETA）。随后，在具有高生物含量（理论上为61–81％）的“绿色+绿色” UV-LED固化体系下，TDMM与大豆油基反应性单体（AESO）表现出良好的共聚能力。TDMM / AESO系统比纯AESO显示出更高的T _g，但热稳定性更低，模量和拉伸强度更高。此外，UV-LED固化涂料具有优异的物理和化学性能。这种生物可再生的基于桐油的单体被证明是有效的反应性稀释剂，并被认为在开发UV-LED固化涂料方面具有良好的潜力。