ALUMINA MEMBRANE, PREPARATION METHOD AND USE THEREOF
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United States of America
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Issued Date -
Dec 12, 2024
app pub date -
Feb 21, 2023
filing date -
Feb 21, 2023
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Abstract
Disclosed is an alumina membrane, its preparation method and application. The preparation method comprises the following steps: carrying out constant voltage anodizing treatment on a surface on one side of an aluminum sheet to obtain an alumina membrane with a porous structure on the surface on one side; removing pure aluminum on an other side of the alumina membrane by a physical processing method, and carrying out pore-enlarging treatment to obtain a membrane with interconnected pores on both sides; and depositing a silicon coating on the surface of the membrane on the side that has been physically processed to obtain the alumina membrane. According to the disclosure, the pure aluminum on the other side is etched by physical processing method after the aluminum on one side is oxidized, so as to avoid an absorbability of an alumina crystal form formed by chemical reagent corrosion on a platelet membrane protein.
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