Rubber Seed Oil-Based UV-Curable Polyurethane Acrylate Resins for Digital Light Processing (DLP) 3D Printing.
Rubber Seed Oil-Based UV-Curable Polyurethane Acrylate Resins for Digital Light Processing (DLP) 3D Printing.
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用于数字光处理 (DLP) 3D 打印的橡胶籽油基 UV 固化聚氨酯丙烯酸酯树脂
DOI：
10.3390/molecules26185455
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发表时间：
2021-09-08
期刊：
影响因子：
--
通讯作者：
Zhou Y
中科院分区：
文献类型：
--
作者：
Hu Y;Zhu G;Zhang J;Huang J;Yu X;Shang Q;An R;Liu C;Hu L;Zhou Y
新型紫外线固化聚氨酯丙烯酸酯 (PUA) 树脂是由橡胶籽油 (RSO) 开发而成。首先，通过RSO与甘油的醇解反应制备羟基化橡胶籽油(HRSO)，然后HRSO与异佛尔酮二异氰酸酯(IPDI)和丙烯酸羟乙酯(HEA)反应生成RSO基PUA(RSO-PUA)低聚物。 FT-IR和1H NMR谱共同表明所获得的RSO-PUA已成功合成，并且计算得出的低聚物的C=C官能度为每个脂肪酸2.27。随后，制备了一系列紫外线固化树脂，并研究了它们的最终性能以及紫外线固化动力学。值得注意的是，含有40%三羟甲基丙烷三丙烯酸酯（TMPTA）的紫外光固化材料的拉伸强度为11.7 MPa，附着力为2级，铅笔硬度为3H，柔韧性为2 mm，玻璃化转变温度高达109.4 °C。最后，将最佳树脂用于数字光处理（DLP）3D打印。 RSO-PUA 的临界曝光能量 (15.20 mJ/cm2) 低于商业树脂。总的来说，这项工作提供了一种简单的方法来制备木本植物油基高性能PUA树脂，可应用于3D打印行业。
Novel UV-curable polyurethane acrylate (PUA) resins were developed from rubber seed oil (RSO). Firstly, hydroxylated rubber seed oil (HRSO) was prepared via an alcoholysis reaction of RSO with glycerol, and then HRSO was reacted with isophorone diisocyanate (IPDI) and hydroxyethyl acrylate (HEA) to produce the RSO-based PUA (RSO-PUA) oligomer. FT-IR and 1H NMR spectra collectively revealed that the obtained RSO-PUA was successfully synthesized, and the calculated C=C functionality of oligomer was 2.27 per fatty acid. Subsequently, a series of UV-curable resins were prepared and their ultimate properties, as well as UV-curing kinetics, were investigated. Notably, the UV-cured materials with 40% trimethylolpropane triacrylate (TMPTA) displayed a tensile strength of 11.7 MPa, an adhesion of 2 grade, a pencil hardness of 3H, a flexibility of 2 mm, and a glass transition temperature up to 109.4 °C. Finally, the optimal resin was used for digital light processing (DLP) 3D printing. The critical exposure energy of RSO-PUA (15.20 mJ/cm2) was lower than a commercial resin. In general, this work offered a simple method to prepare woody plant oil-based high-performance PUA resins that could be applied in the 3D printing industry.
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