Study On Fabrication And Performances Of Stability And Environmentally Friendly Superhydrophobic/Superamphiphobic

Wettability is one of important surface properties of solid material,and it is also one kind of interfacial phenomenon existed widely in nature.According to the wetting theories,the water contact angle(WCA)is used as the physical parameter to evaluate surface wettability,and the surfaces with water(or oil)contact angle less than 0° can be considered as superhydrophilic(or superoleophilic)surfaces,while those with water(or oil)contact angle greater than 150° can be considered as superhydrophobic(or superoleophobic)surfaces.This special wetting property has great application prospects in metal protection,domestic sewage and industrial wastewater treatment.However,most of the superhydrophobic/super double sparse surfaces currently used in the industry suffer from mechanical abrasion and solvent,gas,ultraviolet radiation,particles,acids and bases and bacteria.Therefore,improving the high stability and environmentally friendly superhydrophobic/super-double surface is of great significance in various fields.In this paper,eggshell,brucite particles and ZnO particles are used as raw materials.The main discussion is how to prepare a super-hydrophobic/super-sparing material with high stability and environmental friendliness by using green,low-carbon and environmentally friendly methods.It is intended to provide useful data and scientific basis for the preparation of environmentally friendly superhydrophobic/super double sparse materials.(1)Study on the preparation of superhydrophobic materials from eggshell.In this study,we have demonstrated a facile strategy for fabricating eco-friendly and mechanical durable superhydrophobic material from eggshell.The as-prepared superhydrophobic materials possess not only excellent self-cleaning property and under oil superhydrophobicity,but also high-efficient oil/water separation capability.More importantly,the obtained materials show outstanding and mechanical durable water repellency,which can maintain superhydrophobicity after 360 cm abrasion length of sandpaper.In addition,the materials also show durable superhydrophobic toward strong acidic/alkali solutions,UV irradiation,and water droplet impact,which demonstrates the outstanding chemical and environmental stability.The utilization of daily garbage will provide the new ideas for engineering materials and accelerate the real application of the super-repellent materials(2)Preparation of superhydrophobic materials from brucite-organosilane.In this paper,mechanical stability superhydrophobic materials were prepared from brucite particles modified by trichloro(1H,1H,2H,2H perfluorooctyl)silane(PFOTS)and a simple drop-coating.The obtained materials showed remarkable robustness against sandpaper abrasion,while retaining its superhydrophobicity even after 20 abrasion cycles loaded of 200 g.The as-prepared superhydrophobic materials could tolerate rigorous environment,and it opened a new avenue for a variety of practical applications(3)Preparation of super-double-sparing materials by ZnO-fluorosilane.A corrosion-resistant and wear-resistant super-double-phobic material is prepared by using ZnO particles and 1H,1H,2H,2H-Perfluorodecyltriethoxysilane(PFDTES)as raw materials Due to the non-toxic,low cost and controllable structure of ZnO,the raw materials for preparing super-double-sparse materials are selected.The prepared super-double sparse material has self-cleaning ability,high stability and corrosion resistance.It can be soaked in aqua regia,HCl,H2SO4 and saturated NaOH solution for 2 h,still maintaining super-double hydrophobicity.At the same time,it can withstand 600#sandpaper wear,and its wear resistance is mainly due to the formation of new rough structures during the wear process.