Preparation of diatomite-based self-adhesive super-hydrophobic anti-corrosion coating
Industrial production and daily life are inseparable from steel tools and equipment,but with the exten-sion of the use of time,carbon steel equipment will inevitably occur corrosion,which will reduce the mechanical and physical properties of carbon steel,shorten the service life,waste economy at the same time may cause fire,explosion and other catastrophic accidents,so the corrosion of carbon steel is very important.So electrochemical method,organic coating method,corrosion inhibitor method and other common methods are designed to solve such problems.Among them,the organic coating method is the most convenient and the best effect,and among all kinds of coatings,the superhydrophobic coating has attracted the attention of researchers because of its u-nique surface structure and excellent anti-corrosion performance.However,the coating prepared by the existing method usually requires a large number of organic solvents,which is not only a complicated process,but also causes serious environmental pollution,and the later maintenance work is very complicated.Therefore,it is necessary to prepare a self-adhesive and self-cleaning coating which is not limited by time,space and thermal spraying equipment for the protection of carbon steel equipment.In this study,a preparation method was intro-duced.The anti-corrosion coating with self-adhesion,self-adsorption and long-term superhydrophobic properties was prepared by scraping coating through secondary hydrothermal method,and relevant tests were carried out on it.The results show that the modified composite coating has a maximum hydrophobic Angle of 151.52° and an impedance modulus of 1011 Ω·cm2,showing excellent self-cleaning and anti-corrosion properties.
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