超疏水网状材料在多液体介质中的承载能力研究  

Loading Capacity of Superhydrophobic Mesh Materials on Different Liquid Medium

作　　者：徐向辉 安俊超[1] 左寒松 金文中[1] 王猛 叶乾乾 XU Xiang-hui;AN Jun-chao;ZUO Han-song;JIN Wen-zhong;WANG Meng;YE Qian-qian(School of Materials Science and Engineering,Luoyang Institute of Science and Technology,Luoyang 471023,China)

机构地区：[1]洛阳理工学院材料学院,洛阳471023

出　　处：《表面技术》2020年第11期177-183,共7页Surface Technology

基　　金：河南省高等学校重点科研项目(18A430019)。

摘　　要：目的利用浸润性调控来实现网状材料表面超疏水,从而使其在不同液体介质表面的承载能力得到提升。方法通过简单的化学镀和十八硫醇修饰制备出了超疏水的铜网,分别研究了铜网在pH=1~13的溶液和5%~30%氯化钠溶液体系中的承载力。结果在pH=7时,铜网承载能力最大为12.97 g,可达其自身质量的8倍,随液体介质酸碱性的增加,铜网表面包覆的十八硫醇出现脱附情况,造成铜网承载能力出现下降趋势,但是仍然比原始铜网承载能力大5倍。在不同浓度盐水中,超疏水铜网承载力基本与纯水中保持一致,这是液体密度变化和超疏水共同作用的结果。并且通过计算分析,证实了疏水效应产生的附加浮力作用是承载能力提升的原因。结论通过对铜网进行表面疏水化处理,使其在不同液体介质表面承载能力有较大提升,研究结果在航海船舶与水面航行体增载减重方面具有一定的应用前景,并提供了一种可行的思路。The work aims to realize the superhydrophobic surface of mesh materials by adjusting the wettability,so as to enhance the loading capacity of mesh material on different liquid medium surfaces.The superhydrophobic copper mesh was obtained by electroless plating and chemical modification with n-octadecyl mercaptan.The loading capacity of copper mesh in solution(pH=1~13)and sodium chloride solution(concentration of 5%~30%)was studied.Through calculation,it was verified that the additional buoyancy generated by hydrophobic effect was the cause to improve the loading capacity.When the pH=7,the maximum loading capacity of copper mesh was 12.97 g,8 times bigger than the dead weight of copper mesh.As the alkalinity or acidity of liquid medium increased,the desorption of n-octadecyl mercaptan coated on the surface of copper mesh caused the loading capacity of copper mesh to decline,but the loading capacity was still 5 times larger than that of the original copper mesh.In different concentrations of brine,the loading capacity of superhydrophobic copper mesh was basically consistent with that in pure water,which was the result of the combination of liquid density change and superhydrophobicity.Through surface superhydrophobic treatment,the loading capacity of copper mesh on different liquid medium has been improved and the research results have a certain application prospect in increasing load and reducing weight of sailing ships and surface vehicles,and provide a feasible idea.

关 键 词：化学镀 表面浸润性 液面承载力 附加浮力 液体介质 

分 类 号：TQ153[化学工程—电化学工业] TB303[一般工业技术—材料科学与工程]