Method for preparing superhydrophobic film layer on metal substrate

• Main Authors: ZHANG YUEZHONG, XU YANG, WANG HUIHUI, WEI YINGHUI, DONG GEHANG, LIU BAOSHENG
• Format: Patent
• Language: Chinese; English
• Published: 20.12.2019
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

The invention relates to a method for preparing a superhydrophobic film layer on the surface of a metal substrate. According to the method, a hydrophobic micro-nano hierarchical structure is preparedon the surface of the metal substrate by adopting a one-step solvothermal method. The method comprises the steps of placing the thoroughly cleaned metal substrate in a reaction kettle containing a dimethyl formamide mixed solution of zinc nitrate with the concentration of 0.01-0.05 mol/L and stearic acid with the concentration of 0.01-0.05 mol/L to prepare the superhydrophobic film layer on the surface of the metal substrate. The method is simple to operate; raw materials utilized have little pollution to the environment and are low in cost and easy to obtain; and the prepared superhydrophobicfilm layer can be used in the fields of metal corrosion prevention, self-cleaning, anti-icing and the like. 本发明涉及一种在金属基底表面制备超疏水膜层的方法。本发明采用一步溶剂热法在金属基底表面制备了疏水性的微纳米层级结构。将清洗干净的金属基底置于装有浓度为0.01～0.05 mol/L的硝酸锌和0.01～0.05 mol/L硬脂酸的二甲基