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Soldering lug type aluminum electrolytic capacitor electrolyte and preparation method thereof

An aluminum electrolytic capacitor and electrolyte technology, applied in the field of electrolyte, can solve problems such as poor effect, and achieve the effects of excellent waterproofness, improved waterproofness, and good waterproofness.

Pending Publication Date: 2022-07-08
富之庆电子(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the related technologies mentioned above, the inventor believes that phosphoric acid or phosphate is highly acidic and has a corrosive effect on the aluminum oxide film. Although it can temporarily prevent the hydration reaction of the electrolyte, the effect is not good. A strong electrolyte is necessary

Method used

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  • Soldering lug type aluminum electrolytic capacitor electrolyte and preparation method thereof

Examples

Experimental program
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Effect test

preparation example 1

[0057] The preparation method of mixed ester is:

[0058] Put 10kg hypophosphorous acid and 10kg polymethacrylic acid into the stirred tank, stir at a temperature of 60 ° C and a rotating speed of 20 rad / min, after stirring, add 2 kg of formic acid and 2 kg of glacial acetic acid and continue at 60 ° C, Stirring is carried out under the condition that the rotating speed is 20rad / min to obtain a viscous liquid;

[0059] 5 parts of 3-methyl-1,5-pentanediol was added to the viscous solution, mixed and stirred at a rotational speed of 20 rad / min, and dried at a temperature of 50° C. to obtain a mixed ester.

preparation example 2

[0061] Put 20kg of hypophosphorous acid and 20kg of polymethacrylic acid into the stirring tank, stir at a temperature of 60 ° C and a rotating speed of 20 rad / min, after the stirring is completed, add 8 kg of formic acid and 8 kg of glacial acetic acid and continue at 60 ° C, Stirring is carried out under the condition that the rotating speed is 20rad / min to obtain a viscous liquid;

[0062] 15 parts of 3-methyl-1,5-pentanediol was added to the viscous solution, mixed and stirred at a rotational speed of 20 rad / min, and dried at a temperature of 50° C. to obtain a mixed ester.

preparation example 3

[0064] Put 13.8kg of hypophosphorous acid and 18.6kg of polymethacrylic acid into the stirred tank, stir at a temperature of 60 ° C and a rotating speed of 20 rad / min, after the stirring is completed, add 8kg of formic acid and 8kg of glacial acetic acid and continue at 60 ℃, stirring under the condition of rotating speed of 20rad / min to obtain a viscous liquid;

[0065] 6 parts of 3-methyl-1,5-pentanediol were added to the viscous liquid, mixed and stirred at a rotational speed of 20 rad / min, and dried at a temperature of 50° C. to obtain a mixed ester.

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Abstract

The invention relates to a soldering lug type aluminum electrolytic capacitor electrolyte, and relates to the technical field of electrolytes, and the soldering lug type aluminum electrolytic capacitor electrolyte comprises the following raw materials by weight: 55-65 parts of ethylene glycol; 15 to 25 parts of diglycerol; 2 to 6 parts of ammonium dodecanedioate; 5 to 15 parts of ammonium sebacate; 2-3 parts of a waterproof mixture; 1-2 parts of a hydrogen eliminating agent; 0.5 to 1.5 parts of a flash fire improver; the waterproof mixture is mixed ester prepared from polymethylacrylic acid, 3-methyl-1, 5-pentanediol and hypophosphorous acid. The electrolyte has the effect of improving the waterproof performance of the electrolyte.

Description

technical field [0001] The present application relates to electrolytes, in particular to electrolytes for solder-tab type aluminum electrolytic capacitors and preparation methods thereof. Background technique [0002] At present, aluminum electrolytic capacitors are the most widely used basic components in electronic products. Aluminum electrolytic capacitors can be used as filtering and bypassing of electronic circuits, and can also play the role of coupling and decoupling. [0003] At present, the electrolyte of the aluminum electrolytic capacitor will generate water during operation, and the water can reduce the heat generated by the capacitor system during operation, and at the same time improve the solubility of the electrolyte; if the electrolyte is too much water during operation, the oxide film on the surface of the anode aluminum foil will be hydrated. Therefore, the performance of the oxide film is destroyed. Generally, phosphoric acid or phosphate is added to the ...

Claims

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Application Information

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IPC IPC(8): H01G9/035H01G9/00H01G9/02H01G9/145
CPCH01G9/035H01G9/0029H01G9/02H01G9/145Y02E60/13
Inventor 江学虎欧德虎
Owner 富之庆电子(深圳)有限公司
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