Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of extra-high voltage anode foil forming solution

An anode foil and ultra-high voltage technology, which is applied in capacitor manufacturing, electrical components, capacitors, etc., can solve the problems of poor density of oxide film, flash fire of oxide film, low formation efficiency, etc., and achieve the effect of stable product performance

Inactive Publication Date: 2012-07-11
GUANGXI HEZHOU GUIDONG ELECTRONICS TECH
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The anode foil voltage requirements for the raw material used to manufacture ultra-high voltage aluminum electrolytic capacitors are also getting higher and higher, while the current common high-voltage anode foil forming liquid flashover voltage is low, generally around 680V, ​​and cannot reach more than 700V; some documents use boric acid Although the formation liquid configured by ammonium pentaborate can reach more than 700V, the formation efficiency is low, the formation boost time is long, the degree of oxide film damage is large, and the density of the oxide film is poor.
The flashover voltage of the forming liquid is low, and the flashover phenomenon will occur due to the breakdown of the oxide film during the formation process, which will affect the performance of the foil.

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

[0011] Prepare 700V forming solution according to 8.0wt% of boric acid, 0.05wt% of ammonium dodecanoate, and 0.005v% of silane coupling agent. The specific steps are as follows:

[0012] (1) Slowly add 86.9565g of boric acid that has been weighed into 1L of pure water at 70°C while stirring continuously to fully dissolve the boric acid to prepare a base solution with boric acid as the main solute;

[0013] (2) Heat the base liquid to 90°C, slowly add 0.5438g of ammonium dodecanoate, which has been weighed, and stir continuously at the same time. After it is fully dissolved, slowly add 0.05mL of silane coupling agent to obtain 700V forming fluid.

[0014] Used to form 700Vf formed foil, the product boost time is 148s, and the leakage current is 17μA / cm 2 .

Embodiment 2

[0016] Prepare 850V forming liquid according to 6.0wt% of boric acid, 0.03wt% of ammonium dodecanoate, and 0.003v% of silane coupling agent. The specific steps are as follows:

[0017] (1) Slowly add 63.8298g of boric acid weighed into 1L of pure water at 70°C while stirring continuously to fully dissolve boric acid to prepare a base solution with boric acid as the main solute;

[0018] (2) Heat the base liquid to 90°C, slowly add 0.3192g of ammonium dodecanoate, which has been weighed, and stir continuously at the same time. After fully dissolving, slowly add 0.03mL of silane coupling agent to obtain 850V forming fluid.

[0019] Used to form 850Vf formed foil, the product boost time is 138s, and the leakage current is 15μA / cm 2 .

Embodiment 3

[0021] Prepare a 1000V forming solution with 4.0wt% boric acid, 0.001wt% ammonium dodecanoate, and 0.001v% silane coupling agent. The specific steps are as follows:

[0022] (1) Slowly add 41.6667g of boric acid weighed into 1L of pure water at 70°C while stirring continuously to fully dissolve boric acid to prepare a base solution with boric acid as the main solute;

[0023] (2) Heat the base liquid to 90°C, slowly add 0.0104g of ammonium dodecanoate, which has been weighed, and stir continuously at the same time. After it is fully dissolved, slowly add 0.01mL of silane coupling agent to obtain 1000V forming liquid.

[0024] Used to form 1000Vf formed foil, the product boost time is 146s, and the leakage current is 18μA / cm 2 .

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

PropertyMeasurementUnit
Leakage currentaaaaaaaaaa
Leakage currentaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of an extra-high voltage anode foil forming solution. The method comprises is characterized in that a formating efficiency promoting agent and a spark voltage promoting agent are added into a forming solution, wherein the main solute of the forming solution is boric acid, the content of ammonium dodecanedioate in the formating efficiency promoting agent is 0.001-0.050 wt% and the content of a silane coupling agent in the spark voltage promoting agent is 0.001-0.005v%. The preparation method provided by the invention is adopted to form a 700-1000v etched formed foil the product performance is stable, the voltage rising time is less than 160s, and the leakage current of the product is less than 25 mu A / cm <2>.

Description

technical field [0001] The invention relates to a method for preparing a liquid for forming an anode foil of an aluminum electrolytic capacitor, in particular to a method for preparing a liquid for forming an ultra-high voltage anode foil. Background technique [0002] With the rapid development of the electronics industry, the application of aluminum electrolytic capacitors is becoming more and more extensive, especially the demand for ultra-high voltage aluminum electrolytic capacitors is becoming stronger and stronger. The anode foil voltage requirements for the raw material used to manufacture ultra-high voltage aluminum electrolytic capacitors are also getting higher and higher, while the current common high-voltage anode foil forming liquid flashover voltage is low, generally around 680V, ​​and cannot reach more than 700V; some documents use boric acid Although the flash fire voltage of the forming liquid configured with ammonium pentaborate can reach more than 700V, t...

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): H01G9/045H01G13/00
Inventor 宋洪洲陆宝琳杨林桑
Owner GUANGXI HEZHOU GUIDONG ELECTRONICS TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com