Abstract A series of semi-gloss waterborne polyurethane-polyacrylate (PUA) hybrid dispersions containing different weight ratios of styrene/butyl acrylate monomers were first synthesized by solution polymerization and then phase inversion. The average particle size of PUA dispersions particle was analyzed by dynamic light scattering (DLS) measurement. Its core-shell morphology was characterized by transmission electron microscopy (TEM), whose structure was also confirmed by FTIR and nuclear magnetic resonance carbon spectroscopy (13C-NMR). The surface morphology of the PUA films was observed by scanning electron microscopy (SEM). The thermal properties of the PUA films were characterized by differential scanning calorimetry (DSC) analysis, and the core-shell hybrid latex films showed phase separation behaviors. The results showed that the PUA films had a self-rough surface, and exhibited excellent adhesion strengths and good hardness.

中文翻译：

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基于水性聚氨酯-聚丙烯酸酯混合分散体的自消光涂料的制备与表征

摘要 首先通过溶液聚合然后转相合成了一系列含有不同重量比的苯乙烯/丙烯酸丁酯单体的半光泽水性聚氨酯-聚丙烯酸酯(PUA)杂化分散体。通过动态光散射 (DLS) 测量分析 PUA 分散体颗粒的平均粒径。其核壳形貌通过透射电子显微镜 (TEM) 进行表征，其结构也由 FTIR 和核磁共振碳光谱 (13C-NMR) 证实。通过扫描电子显微镜（SEM）观察PUA薄膜的表面形貌。PUA 薄膜的热性能通过差示扫描量热法 (DSC) 分析表征，核壳混合胶乳薄膜表现出相分离行为。