The invention discloses an ultra-hydrophobic
aluminum foil and a preparation method thereof. The preparation method of the ultra-hydrophobic
aluminum foil comprises the following steps:
processing an
aluminum foil substrate by an
aqueous solution of
sodium hydroxide, cleaning the processed aluminum foil substrate, immersing the cleaned aluminum foil substrate in a prepared acidic solution to carry out
etching treatment, cleaning the etched aluminum foil, immersing the aluminum foil in a prepared liquid hydrophobic material, and carrying out solidifying
drying treatment to obtain the ultra-hydrophobic aluminum foil, wherein the liquid hydrophobic material is prepared from, by weight, 26-32 parts of a
stearic acid solution, 16-20 parts of modified
alkyd resin, 14-20 parts of nanometer
titanium dioxide, 6-10 parts of
fucoidan, 2-6 parts of neryl
isovalerate, 2-8 parts of
carboxymethylcellulose sodium and 4-8 parts of fluorinated
polyethylene. The ultra-hydrophobic aluminum foil has the advantages of ultra-strong hydrophobicity, effective inhibition of condensation, substantial increase of the
corrosion resistance of the aluminum foil and substantial
prolongation of the service life of the aluminum foil, and the production method has the advantages of simplicity, small substrate damages, good apparent quality, and suitableness for wide promotion.