Preparation method of Al2O3-TiO2 composite membrane
A technology of al2o3-tio2, 1.al2o3-tio2, applied in the field of composite film, can solve the complex problems of corroding the surface of aluminum foil, and achieve the effects of avoiding phase transition and embrittlement, enhancing bonding force and simple equipment
Active Publication Date: 2010-11-03
GUANGDONG HUAFENG NEW ENERGY TECH CO LTD
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The invention discloses a preparation method of an Al2O3-TiO2 composite membrane, relating to a composite membrane and providing a preparation method of an Al2O3-TiO2 composite membrane with a high dielectric constant. The preparation method comprises the steps of: sequentially adding acetone, iodine, water in three times and alcohol into a container, stirring, then adding nanoscale rutile TiO2 powder, uniformly stirring and then adding polyethylene glycol, stirring till even dispersing, and carrying out ultrasound treatment to obtain a TiO2 suspending liquid as an electrophoresis sediment liquid; depositing at 12-26V by adopting a double electrode electrolytic bath and using a stainless steel as a counter electrode (anode) and corrosion foil as a working electrode (cathode), carrying out thermal treatment after the foil is dried, and forming an Al2O3-TiO2 thin film on the corrosion foil to obtain a composite aluminum foil; and placing the composite aluminum foil into a weak acid or ammonium salt solution, after anodizing and thermal treatment in the presence of water bath, placing the composite aluminum foil into the weak acid or ammonium salt solution again for anodizing to obtain the Al2O3-TiO2 composite membrane.
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