Preparation method of colored superhydrophobic coating with outstanding corrosion resistance

• Main Authors: YAN LONG, WANG QINGTAO, LI JIAN, JING ZHIJIAO, LEI ZIQIANG
• Format: Patent
• Language: English
• Published: 03.06.2015
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention provides a preparation method of a colored superhydrophobic coating with outstanding corrosion resistance. In the method, colored stearate hydrophobic powder is prepared by the chemical precipitation method by using sodium stearate as a precursor, inorganic salt as a reaction substrate, and water as a reaction solvent; stearate hydrophobic powder is dispersed into absolute ethyl alcohol to form suspension; a colored super-hydrophobic coating is prepared by the coating method by using nitrogen as carrier gas and a stainless steel block as a substrate. The contact angle test shows that the contact angle of the colored stearate coating to deionized water and acidic and alkaline water drop is more than 150 degrees; after the coating is soaked for 30 days through 3.5wt% of a NaCl water solution, the contact angle is still more than 150 degrees, so that high super-hydrophobic performance is maintained; the coating used as a super-hydrophobic material is high in corrosion resistance and has a good commerce prospect in the technical field of a special soakage interface.