Abstract Non-isocyanate polyurethane acrylate coatings (NIPUAs) were prepared by photocrosslinking of mixtures of an acrylate terminated NIPU oligomers (A-Ol) and reactive (meth-)acrylate diluents. A-Ol were prepared by a transurethane polycondensation pathway followed by an acrylation reaction of the resulting hydroxy chain-ends. The influence of the reactive diluent content and chemical structures on the thermal and mechanical properties of these coatings has been investigated. The obtained materials exhibited thermal stabilities above 255 °C, Young modulus ranging from 2.6 to 9.2 MPa, tensile strength from 2.69 to 25.5 MPa and elongation at break from 56 to 470%.

中文翻译：

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由丙烯酸酯封端的非异氰酸酯聚氨酯 (NIPU) 和活性稀释剂制成的光交联涂料

摘要 非异氰酸酯聚氨酯丙烯酸酯涂料 (NIPUA) 通过丙烯酸酯封端的 NIPU 低聚物 (A-Ol) 和反应性 (甲基) 丙烯酸酯稀释剂的混合物光交联制备。A-Ol是通过氨基甲酸酯缩聚途径制备的，然后是所得羟基链末端的丙烯酸酯化反应。已经研究了活性稀释剂含量和化学结构对这些涂层的热性能和机械性能的影响。所得材料在 255°C 以上表现出热稳定性，杨氏模量范围为 2.6 至 9.2 MPa，拉伸强度为 2.69 至 25.5 MPa，断裂伸长率为 56 至 470%。