Formation solution for shortening hydration time, water-resistant formation foil and formation method thereof

A chemical conversion method and chemical liquid technology, applied in the direction of electrolytic coatings, surface reaction electrolytic coatings, electrolytic capacitors, etc., can solve the problems of difficult and stable control of the production process, large consumption of phosphoric acid, poor ion configuration, etc., and achieve stable and controllable production. , the effect of low phosphoric acid consumption and excellent product quality
CN104499030BActive Publication Date: 2017-03-15SICHUAN RIKE ELECTRONICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SICHUAN RIKE ELECTRONICS
Publication Date
2017-03-15

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Abstract

The invention belongs to the field of electronic processing and in particular relates to a forming agent with the capabilities of shortening hydration time and improving water resistance of a formed foil, a water-resistance formed foil and a forming method of the water-resistance formed foil. The invention provides a novel application of the forming agent prepared by utilizing maleic acid for improving the water resistance of the formed foil and shortening the hydration time and also purposes of increasing the electrostatic conversion rate and the flex conversion rate of the formed foil. The forming agent is prepared from the following raw material in percentage by weight: 0.001-0.004 percent of the maleic acid. According to the forming agent disclosed by the invention, by adding the maleic acid, the purposes of inhibiting generation of gamma'-Al2O3, increasing the production amount of gamma-Al2O3 and improving the water resistance of the formed foil are achieved; compared with the prior art, the forming agent is stable and controllable in production and low in consumption of phosphoric acid.
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Description

technical field

[0001] The invention belongs to the field of electronic processing, and in particular relates to a forming solution for shortening the hydration time, a water-resistant forming foil and a forming method thereof. Background technique

[0002] Formed foil is mainly used in aluminum electrolytic capacitors. The formation process is to form a dense oxide film on the surface of high-purity aluminum as a non-conductive medium.

[0003] The chemical formation process generally includes the following steps: the following steps: A) four-level chemical formation or five-level chemical formation, B) heat treatment, C) phosphoric acid treatment, D) post-chemical formation, E) post-treatment four-level or five-level chemical formation-heat treatment-repair chemical formation-phosphorus Treatment-repair formation, the four-level formation includes the first-level formation, the second-level formation, the third-level formation, and the fourth-level formation, and the fift...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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