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首页> 外文期刊>Progress in Organic Coatings: An International Review Journal >UV-curable waterborne polyurethane-acrylate: Preparation, characterization and properties
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UV-curable waterborne polyurethane-acrylate: Preparation, characterization and properties

机译：可紫外线固化的水性聚氨酯-丙烯酸酯：制备，表征和性能

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摘要

The waterborne polyurethane-acrylate (PUA) oligomer was firstly prepared based on isophorone diisocyanate (IPDI), polyether polyol (NJ-210), dimethylol propionic acid (DMPA) and hydroxyethyl methyl acrylate (HEMA) via in situ and anionic self-emulsifying method. The UV-curable polyurethane-acrylate (UV-PUA) was obtained with oligomer, monomers (BA and TPGDA) and photoinitiator Darocur 1173. FT-IR, DSC and TGA were employed to investigate the structures and thermal properties of the UV-PUA films. The effects of BA/TPGDA (R) value, the content of Darocur 1173 and the UV curing time on the performances were investigated. Some mechanical performances, solvent resistance and the gel content of UV-PUA films were measured. When the ratio of BA/TPGDA was 5/5, the UV-PUA film had the best solvent (water, alkali and ethanol) resistances. Besides, with the ratio of the BA/TPGDA increasing, the surface drying time increased. When the content of Darocur 1173 was 4%, the gel content achieved the maximum while the surface drying time achieved the minimum. The obtained UV-curable polyurethane-acrylates are promising as oligomers for UV-curable coatings, plastics, inks and adhesives.
机译：首先基于异佛尔酮二异氰酸酯（IPDI），聚醚多元醇（NJ-210），二羟甲基丙酸（DMPA）和丙烯酸羟乙基甲基丙烯酸酯（HEMA），通过原位和阴离子自乳化法制备了水性聚氨酯-丙烯酸酯（PUA）低聚物。 。用低聚物，单体（BA和TPGDA）和光引发剂Darocur 1173获得了可紫外固化的聚氨酯-丙烯酸酯（UV-PUA）。采用FT-IR，DSC和TGA研究了UV-PUA膜的结构和热性能。 。研究了BA / TPGDA（R）值，Darocur 1173的含量和UV固化时间对性能的影响。测量了一些机械性能，耐溶剂性和UV-PUA膜的凝胶含量。当BA / TPGDA的比例为5/5时，UV-PUA膜具有最佳的耐溶剂性（水，碱和乙醇）。此外，随着BA / TPGDA比例的增加，表面干燥时间增加。当Darocur 1173的含量为4％时，凝胶含量达到最大，而表面干燥时间达到最小。所获得的可UV固化的聚氨酯-丙烯酸酯有望用作可UV固化的涂料，塑料，油墨和粘合剂的低聚物。

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