Method for chemically synthesizing high-dielectric constant electrode foil

A technology with high dielectric constant and process method, which is applied in anodic oxidation, electrolytic capacitors, circuits, etc., can solve the problems of unstable quality and low production efficiency, and achieve the effects of stable product quality, improved utilization rate, and energy saving

Inactive Publication Date: 2007-09-05
DONGGUAN HEC CONDENSER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has the disadvantages of unstable quality and low production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Example 1: Cut the high dielectric constant electrode foil into a rectangle of 6×12 cm, soak it in a phosphoric acid solution of 2% mass concentration for 2 minutes; take it out and wash it with pure water; in a solution of 20% ammonium adipate , anodized at 10V for 6 minutes, current density 30mA / cm 2 ; take it out and immerse it in a phosphoric acid solution with a mass concentration of 2% for 2 minutes; take it out and wash it with pure water; perform anodic oxidation again at a voltage of 20V for 6 minutes; conduct heat treatment at 520°C for 2 minutes; supplement anodic oxidation, The voltage is 20V, and the time is 3 minutes; it is immersed in a phosphoric acid solution with a mass concentration of 2% for 2 minutes; it is taken out and washed with pure water; it is dried at a temperature of 200°C.

Embodiment 2

[0013] Example 2: Cut the high dielectric constant electrode foil into a rectangle of 6×12 cm, and immerse it in the ammonium phosphate solution with a mass concentration of 1.0% for 2 minutes, with a voltage of 20V and a current intensity of 10mA / cm 2 ;Take it out and wash it with pure water; In the ammonium adipate solution with a concentration of 20%, carry out the first-stage anodic oxidation at 20V for 6 minutes; after taking it out, put it in the ammonium dihydrogen phosphate solution for 2 minutes, and the voltage is 25V ; Take it out and clean it with pure water; carry out the second-stage anodizing, the voltage is 25V, and the time is 6 minutes; under the voltage of 50V, immerse in the ammonium phosphate solution for 2 minutes; carry out the third-stage anodizing under the voltage of 50V for 8 minutes; Heat treatment at 510°C for 2 minutes; supplementary anodizing at 50V for 3 minutes; power dipping in ammonium phosphate solution for 2 minutes again with a voltage of 5...

Embodiment 3

[0014] Example 3: Cut the high dielectric constant electrode foil into a rectangle of 8×10 cm, soak it in a phosphoric acid solution with a mass concentration of 1.0% for 2 minutes; take it out and wash it with pure water; in a solution with a concentration of 10% ammonium adipate , at 70V for 6 minutes in the first stage of anodizing; take it out and dip it in phosphoric acid solution for 2 minutes; take it out and wash it with pure water; carry out the second stage of anodizing at 120V for 6 minutes; dip it in phosphoric acid solution 2 minutes; the third-stage anodizing at 160V for 8 minutes; immersion in phosphoric acid solution for 2 minutes; the fourth-stage anodizing at 200V for 8 minutes; heat treatment at 520°C for 2 minutes; supplementary anodizing at 200V, time 5 minutes; dip again in phosphoric acid solution for 2 minutes; take it out and wash it with pure water; dry it at 150°C.

[0015] Test items

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PUM

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Abstract

The invention is concerned with the converting technique of the high dielectric constant electrode foil, it is: infuses the high dielectric constant electrode foil into the phosphoric acid or phosphate liquor, cleans with pure water, processes the first level anodic oxidation; processes the infusion and the cleaning again; then processes the anodic oxidation; processes heat treatment in high temperature; progresses the anodic oxidation, infuses into the phosphoric acid or phosphate liquor; finally, cleans with pure water and drying. The invention is high producing efficiency, and stable production quality.

Description

technical field [0001] The invention belongs to a manufacturing process of an anode foil of an aluminum electrolytic capacitor. Background technique [0002] Generally, the industrial chain of aluminum electrolytic capacitors is like this: high-purity aluminum ingots (purity 98%-99.99%) are manufactured into light foils through melting and rolling; the light foils are processed by corrosion technology to produce corroded foils; The technical treatment of the process becomes a formed foil; the formed foil is made into a capacitor. With the development of the electronic industry, electronic products are becoming more and more miniaturized and portable. Therefore, various electronic components tend to develop in the direction of miniaturization, and capacitors are no exception. The volume of aluminum electrolytic capacitors is mainly restricted by the electrostatic capacity of the anode foil (ie, formed foil). In order to further improve the electrostatic capacity of the ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/055H01G13/00C25D11/16C25D11/04C25D11/12
Inventor 李道重
Owner DONGGUAN HEC CONDENSER CO LTD
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