Treatment method for improving water resistance of electrode foil for aluminum electrolytic capacitor

An aluminum electrolytic capacitor and processing method technology, applied in electrolytic capacitors, capacitors, circuits, etc., can solve the problems of unstable product performance and poor water resistance, and achieve the effects of high water resistance, shortened boost time, and easy storage.

Inactive Publication Date: 2017-05-10
NANTONG HAIXING ELECTRONICS +2
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With this manufacturing method of electrode foil, the hydrophobic film of the product is relatively thin, th

Method used

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
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Example 1: After immersing the aluminum foil in water at 95°C for 10 minutes; take it out and place it in 0.5% ammonium dihydrogen phosphate aqueous solution, at 85°C, 20mA / cm 2 , 200V, into 10 minutes; take out and wash; put in 0.3% ammonium dihydrogen phosphate aqueous solution, at 85 ℃, 20mA / cm 2 , 430V, into 10 minutes; take out and wash with water; place in 8% boric acid and 1% ammonium pentaborate aqueous solution, at 85°C, 20mA / cm 2 , 590V conditions, into 10 minutes; placed in the same three-level aqueous solution, at 85 ℃, 20mA / cm 2 , 620V, 30 minutes into 30 minutes; after taking it out, heat it at 500°C for 3 minutes; 2 , 620V, 10 minutes of formation; then in 0.1% hydroxyethylidene diphosphonic acid solution at 50°C for 5 minutes; take it out and wash it; then place it in the same aqueous solution as the tertiary formation, at 85°C 、20mA / cm 2 , Under the condition of 620V, it was formed for 10 minutes; then placed in 2% ammonium dihydrogen phosphate solut...

Embodiment 2

[0013] Example 2: After immersing the aluminum foil in water at 95°C for 10 minutes; take it out and place it in 0.5% ammonium dihydrogen phosphate aqueous solution, at 85°C, 20mA / cm 2 , 200V, into 10 minutes; take out and wash; put in 0.3% ammonium dihydrogen phosphate aqueous solution, at 85 ℃, 20mA / cm 2 , 430V, into 10 minutes; take out and wash with water; place in 8% boric acid and 1% ammonium pentaborate aqueous solution, at 85°C, 20mA / cm 2 , 590V conditions, into 10 minutes; placed in the same three-level aqueous solution, at 85 ℃, 20mA / cm 2 , 620V, 30 minutes into 30 minutes; after taking it out, heat it at 500°C for 3 minutes; 2 , 620V, 10 minutes of formation; then in 3% hydroxyethylidene diphosphonic acid solution at 80°C for 10 minutes; take it out and wash it; 、20mA / cm 2 , Under the condition of 620V, it was formed for 10 minutes; then placed in 2% ammonium dihydrogen phosphate solution, immersed for 5 minutes at 70°C; taken out, washed with water, and dried. ...

Embodiment 3

[0014] Example 3: After immersing the aluminum foil in water at 95°C for 10 minutes; take it out and place it in 0.5% ammonium dihydrogen phosphate aqueous solution, at 85°C, 20mA / cm 2 , 200V, into 10 minutes; take out and wash; put in 0.3% ammonium dihydrogen phosphate aqueous solution, at 85 ℃, 20mA / cm 2 , 430V, into 10 minutes; take out and wash with water; place in 8% boric acid and 1% ammonium pentaborate aqueous solution, at 85°C, 20mA / cm 2 , 590V conditions, into 10 minutes; placed in the same three-level aqueous solution, at 85 ℃, 20mA / cm 2 , 620V, 30 minutes into 30 minutes; after taking it out, heat it at 500°C for 3 minutes; 2 , 620V, 10 minutes of formation; then in 0.1% hydroxyethylidene diphosphonic acid solution at 50°C for 10 minutes; take it out and wash it; then place it in the same aqueous solution as the tertiary formation, at 85°C 、20mA / cm 2 , Under the condition of 620V, it was formed for 10 minutes; then placed in 2% ammonium dihydrogen phosphate solu...

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
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a treatment method for improving the water resistance of an electrode foil for an aluminum electrolytic capacitor. The method comprises the steps of soaking an aluminum foil in water at 95 DEG C for 10 minutes; taking out the aluminum foil and putting the aluminum foil into 0.5% of an ammonium dihydrogen phosphate water solution for formation for 10 minutes; taking out the aluminum foil for washing; putting the aluminum foil into 0.3% of an ammonium dihydrogen phosphate water solution for formation for 10 minutes; taking out the aluminum foil for washing; putting the aluminum foil into 8% of a boric acid and 1% of an ammonium pentaborate water solution for formation for 10 minutes; putting the aluminum foil into a same tertiary water solution for formation for 30 minutes; putting the aluminum foil into a water solution with the same three-stage formation for formation for 10 minutes; carrying out treatment in 0.1%-3% of an organic phosphoric acid or organic phosphate solution at 50-80 DEG C for 5-10 minutes; taking out the aluminum foil for washing; putting the aluminum foil into a water solution with the same three-stage formation for formation for 10 minutes; putting the aluminum foil into 2% of an ammonium dihydrogen phosphate solution and steeping at 70 DEG C for 5 minutes; and taking out the aluminum foil and washing and drying the aluminum foil. The treatment method has the advantages that the electrode foil with high water resistance can be obtained, the voltage-rise time of a product after being boiled is shortened, the electrode foil is convenient to store and the storage life is prolonged.

Description

[0001] Technical field: [0002] The invention relates to a treatment method for improving the water resistance of electrode foils for capacitors, and is especially suitable for the treatment methods for improving the water resistance of electrode foils for medium and high voltage aluminum electrolytic capacitors. [0003] Background technique: [0004] Prior to this, the manufacturing method of electrode foil for medium and high voltage aluminum electrolytic capacitors was as follows: immerse the aluminum foil in 95°C water for 10 minutes; take it out and place it in 0.5% ammonium dihydrogen phosphate aqueous solution, and heat 2 , 200V, into 10 minutes; take out and wash; put in 0.3% ammonium dihydrogen phosphate aqueous solution, at 85 ℃, 20mA / cm 2 , 430V, into 10 minutes; take out and wash with water; place in 8% boric acid and 1% ammonium pentaborate aqueous solution, at 85°C, 20mA / cm 2 , 590V conditions, into 10 minutes; placed in the same three-level aqueous solution, a...

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
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01G9/045
CPCH01G9/045
Inventor 严季新陈健王建中朱鸿伟
Owner NANTONG HAIXING ELECTRONICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap