有机硅涂料应用于西藏阿嘎土防水保护  

Water-proof Organosilicon Coating for Aga Soil in Tibet

作　　者：朱孟轩 张晖[2] 蒋震宇[1] 张良培 薛崤 张忠[2] ZHU Meng-xuan;ZHANG Hui;JIANG Zhen-yu;ZHANG Liang-pei;XUE Xiao;ZHANG Zhong(School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,Guangdong,China;CAS Key Laboratory of Nanosystem and Hierarchical Fabrication,National Center for Nanoscience and Technology,Beijing 100190,China;School of Materials,Tsinghua University,Beijing 100084,China)

机构地区：[1]华南理工大学土木与交通学院,广东广州510640 [2]国家纳米科学中心中科院纳米系统与多级次制造实验室,北京100190 [3]清华大学材料学院,北京100084

出　　处：《合成材料老化与应用》2021年第5期1-6,13,共7页Synthetic Materials Aging and Application

基　　金：中国科学院科技服务网络计划(STS计划)区域重点项目(KFJ-STS-QYZD-121)。

摘　　要：阿嘎土是西藏地区特有的建筑材料,主要成分是碳酸钙、二氧化硅和适量粘土的硅质石灰石。阿嘎土材料强度较低,防水性能差,内部粘性材料容易被雨水冲刷,在日晒、雨淋、风蚀、冻融气候条件下变得粗糙开裂,造成土建文物的破坏。针对这些问题,研究选取十二烷基三甲氧基硅烷(WD-10)和含氢硅油(PMHS)两种有机硅材料作为防水涂料,对两种材料改性后阿嘎土样品的微观结构、疏水性、渗透性、色差、耐刮擦性和耐紫外老化性能进行了表征和测试。结果表明,经两种有机硅材料处理的阿嘎土均有很好的疏水效果,有望在实际中获得应用。Aga soil is a unique building material in Tibet.It is composed of calcium carbonate,silica,siliceous limestone and a few of clay.Aga soil has relatively low strength and poor water-proof property.The binding material inside Aga soil is easily lost by rain drop and water impalement,which results in roughening and cracking of Aga oil,and finally causing destruction of cultural relics.In the present work,aiming at this problem,we selected two kinds of organosilicon materials including dodecyltrimethoxysilane(WD-10) and hydrogen silicone oil(PMHS) as the water-proof coatings for Aga soil.The micro structure,hydrophobicity,permeability,wear resistance,color difference as well as accelerated UV aging property of the organosilicon-treated samples were characterized and tested.The results suggest that both organosilicon materials can endow Aga oil with excellent water-proof property,have good prospects in real application.

关 键 词：十二烷基三甲氧基硅烷 含氢硅油 超疏水 阿嘎土 

分 类 号：TQ63[化学工程—精细化工]