A single-sided sealing method for anodized aluminum oxide porous membrane
An anodized aluminum, single-sided sealing technology, used in surface reaction electrolytic coating, final product manufacturing, coating, etc., can solve problems such as damage, easy to be affected by liquid surface tension, complicated removal, etc., to achieve reliable and good sealing Chemical solution resistance, simple installation effect
Active Publication Date: 2022-06-07
常州费曼生物科技有限公司
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Problems solved by technology
In the invention patent CN104599964B, a silicon wafer wet etching protection method using black glue coating method is proposed. The black glue used in this method has good corrosion resistance, but it is more complicated to remove
In the invention patents CN102214732A and CN105932113B, it is proposed to form a protective film on the non-etching surface by spraying water to prevent the erosion of the etching solution. This method is suitable for thicker samples, such as solar cells, and for tens of microns thick The anodized aluminum film is extremely susceptible to liquid surface tension and damage during the clamping process
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Embodiment 1
[0027] The single-side sealing method of the anodic aluminum oxide porous film of the present embodiment includes the following steps:
[0028] S1: Take the anodic alumina porous membrane 1 and place it on the lower splint 2 of a fixture; the anodic alumina porous membrane 1 has an area to be oxidized of 100 mm×100 mm, a pore size of 20-200 nanometers, and a thickness of the membrane body layer of 1-100 microns.
[0029] S2: Take a ring-shaped plastic film sealing bag 3 sealed with gas (or liquid) inside, and place it on the edge of the anodized aluminum porous film 1 . The plastic film sealing bag 3 is made of a flexible polymer film, such as polyethylene film, polyvinyl chloride film, and the like. Polyethylene PE is a common plastic wrap material with good flexibility and acid and alkali resistance. Polyvinyl chloride PVC has strong stretchability and viscosity, strong acid and alkali resistance, and good chemical stability. The outer dimension of the plastic film sealing...
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Abstract
The invention discloses a method for sealing one side of an anodized aluminum oxide porous membrane, which comprises the following steps: S1: taking an anodized aluminum oxide porous membrane and placing it on the lower splint of a fixture; S2: taking an internal seal with gas or liquid The ring-shaped plastic film sealing bag is placed on the edge of the anodized aluminum porous film, S3: put the upper splint of the jig on the plastic film sealing bag; S4: fix the upper splint and the lower splint of the jig, and adjust the upper splint to be applied to the plastic The pressure on the film seal bag is completed to seal; S5: After the seal is completed, the solution seal test is performed. The invention is a completely reversible purely physical sealing method, which can fully protect the porous anodized aluminum membrane, does not require special adhesives or polymer layers, has simple device, reliable sealing, and can effectively protect the soft and brittle anodized aluminum porous membrane.
Description
technical field [0001] The invention relates to the field of preparation of anodic alumina porous infusion device filter membranes, in particular to the single-sided sealing link of the anodic alumina porous membrane. Background technique [0002] The current preparation of anodic alumina porous membranes is mainly based on wet process. In order to obtain a self-supporting single-layer anodized aluminum porous membrane filter layer, it is usually necessary to protect one side of the sample in the wet process, and only allow the other side to be wet-processed, such as removing residual aluminum, removing the aluminum oxide barrier layer, reaming etc. Because of the high hardness and brittleness of the alumina material after anodization, and because the thickness reaches tens of microns, the sample also has a certain flexibility. Generally speaking, the anodized aluminum sample is both flexible and hard and brittle, so in the process of sealing and clamping, once the deforma...
Claims
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IPC IPC(8): C25D11/18
CPCC25D11/18Y02P70/50
Inventor 蒋开朱学林
Owner 常州费曼生物科技有限公司