This study presents a study on the influence of nano-SiO₂ on the alkaline resistance of waterborne acrylic coating using some analysis methods such as FT-IR and UV-Vis spectroscopy, combined with FE-SEM analysis and monitoring weight and adhesion changes during exposure to the saturated Ca(OH)₂ alkaline environment. The obtained results indicated that the alkaline resistance of acrylic coating enhanced appreciably when adding 2.5 wt% of nano-SiO₂. Under the impact of the saturated Ca(OH)₂ solution for 20 days of immersion, nanocomposite coating containing 2.5 wt.% of nano-SiO₂ was only decreased by 3.6% of the weight and 15.4% of the adhesion, while the neat acrylic coating (without nano-SiO₂) seriously reduced 25.4% of the weight and 39.1% of the adhesion.

中文翻译：

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水性丙烯酸聚合物/SiO2纳米复合涂料的耐碱性

本研究采用 FT-IR 和 UV-Vis 光谱等分析方法，结合 FE-SEM 分析，监测曝光过程中的重量和附着力变化，研究了纳米 SiO ₂对水性丙烯酸涂料耐碱性的影响。到饱和的 Ca(OH) ₂碱性环境。结果表明，添加2.5 wt%的纳米SiO ₂后，丙烯酸涂料的耐碱性明显增强。在饱和 Ca(OH) ₂溶液浸泡 20 天的冲击下，含有 2.5 wt.% 纳米 SiO ₂的纳米复合涂层仅降低了 3.6% 的重量和 15.4% 的附着力，而纯丙烯酸涂层（不含纳米SiO ₂) 严重降低了 25.4% 的重量和 39.1% 的附着力。