Due to the complex chemical modification, harsh synthesis conditions and imperative post-treatment, the industrial products of vegetable oil-based polymers are very rare. In this study, castor oil-based polyurethane acrylic resin (COPUA) was synthesizled by one-pot method from castor oil (CO), isophorone diisocyanate (IPDI), hydroxyethyl acrylate (HEA) and isobbornyl acrylate (IBOA). ¹H NMR and FT-IR measurements were employed to verify the successful preparation of COPUA. Various UV curable films were prepared by mixing non-treated COPUA, photoinitiator (PI-1173), mono-functional active diluent hydroxyethyl methacrylate (HEMA) or bifunctional active diluent tripropylene glycol diacrylate (TPGDA). The mechanical performances of the cured films were studied. Besides, DMA and TGA analyses were used to determine the dynamic thermodynamic performances and the thermal stability of the cured films. As a result, the pure COPUA cured film exhibited excellent thermal stability, storage modulus (421 MPa at 25 °C), tensile strength (9.87 MPa) and high glass transition temperature (60.3 °C). The cross-linking density of films improved with increasing the content of active diluent, resulting in excellent overall performances. In addition, all films possessed excellent hardness, adhesion, solvent resistance and flexibility. In this study, it provides a green and environmentally friendly strategy for the synthesis of vegetable oil-based polymers, reducing our chemical dependence on petrochemical energy.

由于复杂的化学改性、苛刻的合成条件和必要的后处理，植物油基聚合物的工业产品非常罕见。本研究以蓖麻油（CO）、异佛尔酮二异氰酸酯（IPDI）、丙烯酸羟乙酯（HEA）和丙烯酸异冰片酯（IBOA）为原料，采用一锅法合成蓖麻油基聚氨酯丙烯酸树脂（COPUA）。¹H NMR 和 FT-IR 测量用于验证 COPUA 的成功制备。通过混合未处理的 COPUA、光引发剂 (PI-1173)、单官能活性稀释剂甲基丙烯酸羟乙酯 (HEMA) 或双官能活性稀释剂三丙二醇二丙烯酸酯 (TPGDA) 制备各种 UV 可固化薄膜。研究了固化膜的机械性能。此外，DMA和TGA分析用于确定固化膜的动态热力学性能和热稳定性。因此，纯 COPUA 固化膜表现出优异的热稳定性、储能模量（25°C 时为 421 MPa）、拉伸强度（9.87 MPa）和高玻璃化转变温度（60.3°C）。薄膜的交联密度随着活性稀释剂含量的增加而提高，从而具有优异的综合性能。此外，所有薄膜都具有优异的硬度、附着力、耐溶剂性和柔韧性。在这项研究中，它为植物油基聚合物的合成提供了一种绿色环保的策略，减少了我们对石化能源的化学依赖。