Waterborne polyurethane-acrylate (WPUA) composite emulsions were prepared by the physical blending method, graft emulsion polymerization method, and interpenetrating network (IPN)-based method using polytetramethylene glycol (PTMG), isophoronediisocyanate (IPDI), and acrylic monomers (methyl methacrylate (MMA) and butylacrylate (BA)) as the main raw materials. The WPUA polymers were characterized based on their water resistance, morphologies, thermal, spectroscopic and mechanical properties. Graft WPUA film had the highest tensile strength and the best thermal stability, indicating that the strength of the chemical bond between PU and PA plays an important role in modulating the performances of the WPUA films. The results showed that the graft WPUA has excellent integrated properties and thus a potential application in the coating industry. Graphical abstract

中文翻译：

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工业涂料用水性聚氨酯-丙烯酸酯复合乳液的结构与性能：制备方法的影响

以聚丁二醇（PTMG）、异佛尔酮二异氰酸酯（IPDI）和丙烯酸单体（甲基丙烯酸甲酯）为原料，采用物理共混法、接枝乳液聚合法和互穿网络（IPN）法制备水性聚氨酯-丙烯酸酯（WPUA）复合乳液。 MMA)和丙烯酸丁酯(BA))为主要原料。WPUA 聚合物的特征在于它们的防水性、形态、热、光谱和机械性能。接枝 WPUA 薄膜具有最高的拉伸强度和最好的热稳定性，表明 PU 和 PA 之间的化学键强度在调节 WPUA 薄膜的性能中起着重要作用。结果表明，接枝WPUA具有优异的综合性能，因此在涂料行业具有潜在的应用前景。