Fluor-silane modified nano-calcium carbonate (CaCO3) as a hydrophobic coating for the conservation of sandstone via bio-inspired design

Biogeotechnics Pub Date : 2023-12-22 DOI:10.1016/j.bgtech.2023.100064

Ye Wang, Wenxin Xiao, Danqian Wang, Jingfeng Wang

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引用次数: 0

Abstract

Ancient cultural relics built of red sandstone have high historical value. However, due to the acceleration of the industrialization process of human civilization, increasingly frequent acid rain has caused irreversible damage to the surface of red sandstone artifacts. In this research, a fluor-silane modified nano-calcium carbonate (CaCO₃) was prepared as a biomimetic hydrophobic coating for the conservation of red sandstone inspired by the lotus leaf effect. Characterizations and immersion tests were carried out to assess the protective properties of the coating. XRD, FT-IR, TEM and SEM were combined to characterize the morphology of the coating. In addition, the water contact angle was measured before and after immersion in the simulated acid rain. The results indicate that this kind of hydrophobic nano-CaCO₃ coating effectively protected the sandstone from the deleterious effects of acid rain.

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通过生物启发设计，将氟硅烷修饰的纳米碳酸钙（CaCO3）作为保护砂岩的疏水涂层

用红砂岩建造的古代文物具有很高的历史价值。然而，由于人类文明工业化进程的加快，日益频繁的酸雨对红砂岩文物表面造成了不可逆转的破坏。本研究受荷叶效应的启发，制备了一种氟硅烷修饰的纳米碳酸钙（CaCO3），作为保护红砂岩的仿生物疏水涂层。为了评估涂层的保护性能，对其进行了表征和浸泡试验。结合 XRD、FT-IR、TEM 和 SEM 对涂层的形态进行了表征。此外，还测量了在模拟酸雨中浸泡前后的水接触角。结果表明，这种疏水纳米 CaCO3 涂层能有效保护砂岩免受酸雨的有害影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Biogeotechnics

CiteScore

3.00

自引率

0.00%

发文量