Fluor-silane modified nano-calcium carbonate(CaCO_(3))as a hydrophobic coating for the conservation of sandstone via bio-inspired design  

作　　者：Ye Wang Wenxin Xiao Danqian Wang Jingfeng Wang 

机构地区：[1]College of Materials Science and Engineering,Chongqing University,Chongqing 400045,China

出　　处：《Biogeotechnics》2024年第1期61-68,共8页生物岩土技术（英文）

基　　金：support from the National Key Research and Development Program of China(No.2021YFB3701100);the Natural Science Foundation Commission of China(Grant No.U20A20234 and 51874062);Chongqing Foundation and Advanced Research Project(Grant No.cstc2019jcyj-zdxmX0010);the Science and Technology Major Project of Shanxi Province(No.20191102008).

摘　　要：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(CaCO_(3))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-CaCO_(3)coating effectively protected the sandstone from the deleterious effects of acid rain.

关 键 词：Red sandstone Nano CaCO_(3) Acid rain corrosion HYDROPHOBICITY 

分 类 号：TG1[金属学及工艺—金属学]