Abstract The weathering and deterioration of historical buildings, as well as that of many monuments or sculptures using natural stones, is a problem that has been known since antiquity. In this work, we have obtained an innovative waterborne coating made of silica-armored polymer particles. The synthetic approach aimed at maximizing the presence of the silica at the particle surface and its attachment to the polymer is discussed. The performance of the coating is evaluated in two natural building stones that have widely different porosities, Carrara marble and Lecce stone. It was found that the coatings maintained the aesthetics upon ageing, reduced liquid water absorption by capillary and let the water vapor permeate. Moreover, the addition of the nanosilica improves the mechanical resistance, making them suitable to use as protective coatings in total agreement with the regulations in the field of protective natural stones.

中文翻译：

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水性改性二氧化硅/丙烯酸酯混合纳米复合材料作为石材纪念碑的表面保护涂层

摘要 历史建筑以及许多使用天然石材的纪念碑或雕塑的风化和老化是一个自古以来就已知的问题。在这项工作中，我们获得了一种由二氧化硅铠装聚合物颗粒制成的创新水性涂料。讨论了旨在最大限度地提高颗粒表面二氧化硅的存在及其与聚合物的附着力的合成方法。涂层的性能在两种孔隙率差异很大的天然建筑石材中进行评估，卡拉拉大理石和莱切石。发现涂层在老化时保持美观，减少毛细管对液态水的吸收并使水蒸气渗透。此外，纳米二氧化硅的加入提高了机械阻力，