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Ultrahigh pressure formed foil forming liquid and preparation method

A technology of forming foil and ultra-high voltage, which is applied to electrolytic capacitors, coatings, capacitors, etc., can solve the problems of large degree of damage to the oxide film, low liquid flash fire voltage, poor density of the oxide film, etc., and achieves a simple preparation method. Wide source of raw materials and stable product performance

Active Publication Date: 2016-01-13
新疆广投桂东电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The voltage requirements for the forming foil of raw materials used in the manufacture of ultra-high voltage aluminum electrolytic capacitors are also getting higher and higher, but the flash fire voltage of the current ordinary high-voltage forming foil forming liquid is low, generally around 680V, ​​and cannot reach more than 900V; some documents use boric acid Although the flash voltage of the forming liquid configured with ammonium pentaborate can reach more than 900V, 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

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] An ultra-high pressure chemical foil forming liquid, containing the following raw materials in mass percentage: 3.4% boric acid, 1.3% thiophene-2-boronic acid, 1.7% sebacic acid, 0.5% p-nitrobenzoic acid, 0.33% phosphoric acid, 1.8% ammonia water, 0.46% of 2,3-butanediol, 0.38% of sorbitol, 0.95% of benzyl alcohol, 0.11% of polyethylene glycol, 0.04% of polyvinyl alcohol, 0.03% of polyglycerol monooleate, and the balance is pure water; among them, The concentration of ammonia water is 7%, the molecular weight of polyethylene glycol is 1000, the molecular weight of polyvinyl alcohol is 70000, and the polyglycerol monooleate is ten polyglycerol monooleate.

[0024] The preparation method of the above-mentioned ultra-high pressure forming foil forming liquid comprises the following steps:

[0025] (1) Slowly add the weighed boric acid, thiophene-2-boronic acid, sebacic acid, p-nitrobenzoic acid, and phosphoric acid into pure water at room temperature, heat to 70°C, and sti...

Embodiment 2

[0030] An ultra-high pressure chemical foil forming liquid, containing the following raw materials in mass percentage: 1% boric acid, 1.8% thiophene-2-boric acid, 1.2% sebacic acid, 0.3% p-nitrobenzoic acid, 0.1% phosphoric acid, 1.2% ammonia water, 0.75% 2,3-butanediol, 0.5% sorbitol, 1% benzyl alcohol, 0.05% polyethylene glycol, 0.08% polyvinyl alcohol, 0.01% polyglycerol monooleate, and the balance is pure water; The concentration of ammonia water is 5%, the molecular weight of polyethylene glycol is 1200, the molecular weight of polyvinyl alcohol is 50000, and the polyglycerol monooleate is ten polyglycerol monooleate.

[0031] The preparation method of the above-mentioned ultra-high pressure forming foil forming liquid comprises the following steps:

[0032] (1) Slowly add the weighed boric acid, thiophene-2-boronic acid, sebacic acid, p-nitrobenzoic acid, and phosphoric acid into pure water at room temperature, heat to 75°C, and stir for 5 minutes to prepare the base liq...

Embodiment 3

[0036] An ultra-high pressure chemical foil forming liquid, containing the following raw materials in mass percentage: 6% boric acid, 0.8% thiophene-2-boronic acid, 1.5% sebacic acid, 0.9% p-nitrobenzoic acid, 0.05% phosphoric acid, 2.2% ammonia water, 0.25% 2,3-butanediol, 0.6% sorbitol, 0.8% benzyl alcohol, 0.15% polyethylene glycol, 0.05% polyvinyl alcohol, 0.04% polyglycerol monooleate, and the balance is pure water; The concentration of ammonia water is 3, the molecular weight of polyethylene glycol is 1000, the molecular weight of polyvinyl alcohol is 100000, and the polyglycerol monooleate is ten polyglycerol monooleate.

[0037] The preparation method of the above-mentioned ultra-high pressure forming foil forming liquid comprises the following steps:

[0038] (1) Slowly add weighed boric acid, thiophene-2-boronic acid, sebacic acid, p-nitrobenzoic acid, and phosphoric acid into pure water at room temperature, heat to 72°C, and stir for 15 minutes to prepare the base l...

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PUM

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Abstract

Disclosed is ultrahigh pressure formed foil forming liquid and a preparation method. The forming liquid comprises the following raw materials of boronic acid, thiophene-2- boronic acid, sebacic acid, p-nitrobenzoic acid, phosphoric acid, ammonium hydroxide, 2,3-butyl glycol, sorbitol, benzyl alcohol, polyglycol, polyvinyl alcohol, polyglycerol monooleate and pure water. According to the preparation method, all the raw materials are added to the pure water step by step, and heating and dissolution are conducted to obtain the forming liquid. The forming liquid can form formed foil of 900-1200 V. The performance of the product is stable. The pressure rising time is smaller than 120 s. The leakage current of the product is smaller than 15 [mu]A / cm2.

Description

technical field [0001] The invention relates to a preparation method of a forming liquid for aluminum electrolytic capacitor forming foil, in particular to an ultra-high voltage forming foil forming liquid and a preparation method thereof. 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 voltage requirements for the forming foil of raw materials used in the manufacture of ultra-high voltage aluminum electrolytic capacitors are also getting higher and higher, while the flash fire voltage of the current ordinary high-voltage forming foil forming liquid is low, generally around 680V, ​​and cannot reach more than 900V; some documents use boric acid Although the flash fire voltage of the forming solution configured with ammonium pentaborate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/10H01G9/055
Inventor 杨小飞张传超陆宝琳杨林桑温连娇
Owner 新疆广投桂东电子科技有限公司