Superhydrophobic and mechanically robust polysiloxane composite coatings containing modified silica nanoparticles and PS-grafted halloysite nanotubes  

作　　者：Jie Wang Ling Zhang Chunzhong Li 

机构地区：[1]Key Laboratory for Ultrafine Materials of Ministry of Education,Shanghai Engineering Research Center of Hierarchical Nanomaterials,Frontiers Science Center for Materiobiology and Dynamic Chemistry,School of Materials Science and Engineering,East China University of Science&Technology,Shanghai 200237,China

出　　处：《Chinese Journal of Chemical Engineering》2022年第12期56-65,共10页中国化学工程学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(21878092,21838003,91834301 and 51621002);the Shanghai Scientific and Technological Innovation Project(19JC1410400);Program of Shanghai Academic Research Leader(19XD1401400);the Innovation Program of Shanghai Municipal Education Commission;the Fundamental Research Funds for the Central Universities(222201718002)。

摘　　要：Excellent mechanical properties are the prerequisite for the application of superhydrophobic polymer coatings.However,significantly improving the mechanical properties without affecting other properties such as hydrophobicity is a huge challenge.In this study,a superhydrophobic coating with excellent mechanical properties was prepared by spraying a mixture of polysiloxane resins based on three siloxane monomers,hexadecyltrimethoxysilane(HDTMS) modified nano-SiO_(2)particles(SiO_(2)-HDTMS) and polystyrene-grafted halloysite nanotubes(HNTs-PS).SiO_(2)-HDTMS dispersed homogeneously in polysiloxane coatings and the water contact angle of corresponding coating exceeding 150°,achieving superhydrophobicity.The SiO_(2)-HDTMS/HNTs-PS/polysiloxane composite coatings showed excellent abrasion resistance with the water coating contact angle remaining above 150°after 90 abrasion cycles,indicating that HNTs-PS can significantly improve the mechanical properties of the coating without affecting the hydrophobic properties of the coating.The achieved coating also exhibited excellent antifouling and acid and alkali corrosion resistance.This work provides a convenient and ecologically friendly method to prepare superhydrophobic polysiloxane composite coating with excellent mechanical properties,which is promising in the application of anti-fouling,anti-corrosion,and oil-water separation etc.

关 键 词：POLYSILOXANE Superhydrophobic coating Mechanical properties 

分 类 号：TB306[一般工业技术—材料科学与工程]