JP2567418B2 - Electrolytic solution for driving electrolytic capacitors - Google Patents
Electrolytic solution for driving electrolytic capacitorsInfo
- Publication number
- JP2567418B2 JP2567418B2 JP62259087A JP25908787A JP2567418B2 JP 2567418 B2 JP2567418 B2 JP 2567418B2 JP 62259087 A JP62259087 A JP 62259087A JP 25908787 A JP25908787 A JP 25908787A JP 2567418 B2 JP2567418 B2 JP 2567418B2
- Authority
- JP
- Japan
- Prior art keywords
- electrolytic
- electrolytic solution
- driving
- capacitor
- solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Detergent Compositions (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、電解コンデンサをハロゲン化炭化水素で洗
浄した場合にコンデンサ内部にハロゲン化炭化水素が透
過して生ずるコンデンサ素子の腐食を防止し、寿命特性
を向上せしめる高圧用電解コンデンサの駆動用電解液
（以下電解液という）に関するものである。TECHNICAL FIELD The present invention prevents corrosion of a capacitor element caused by permeation of a halogenated hydrocarbon inside a capacitor when the electrolytic capacitor is washed with the halogenated hydrocarbon, and has life characteristics. The present invention relates to an electrolytic solution for driving a high-voltage electrolytic capacitor (hereinafter referred to as an electrolytic solution) for improving the above.
従来の技術 従来より電解コンデンサの電解液としてエチレングリ
コールを主溶媒とし、ほう酸および有機酸あるいはその
塩を溶解してなる電解液が使用されている。またハロゲ
ン化炭化水素による腐食防止を目的としてニトロビフェ
ニールあるいはニトロ安息香酸を添加していた。2. Description of the Related Art Conventionally, as an electrolytic solution for an electrolytic capacitor, an electrolytic solution containing ethylene glycol as a main solvent and a boric acid and an organic acid or a salt thereof dissolved therein has been used. In addition, nitrobiphenyl or nitrobenzoic acid was added for the purpose of preventing corrosion by halogenated hydrocarbons.
発明が解決しようとする問題点 電解コンデンサに対しては、洗浄工程や、印刷基板へ
取着する時に用いるハンダフラックスの除去工程で、洗
浄剤として使用されるハロゲン化炭化水素への浸漬ある
いは蒸気浴などによって、このハロゲン化炭化水素がゴ
ム栓を透過してコンデンサ内に浸入し、分解して塩素イ
オンを生成し、この塩素イオンによってコンデンサ素子
を腐食させることがあった。そこでハロゲン化炭化水素
による腐食防止を目的としてニトロフェニールあるいは
ニトロ安息香酸を添加していたが、それらの添加は火花
発生電圧の低下をもたらすため低圧および中圧（250WV
以下）に限定されていた。Problems to be Solved by the Invention For electrolytic capacitors, immersion in a halogenated hydrocarbon used as a cleaning agent or a steam bath in a cleaning process or a solder flux removal process used when attaching to a printed circuit board. As a result, the halogenated hydrocarbon may penetrate the rubber plug and enter the capacitor, decompose to generate chlorine ions, and the chlorine ions may corrode the capacitor element. Therefore, nitrophenyl or nitrobenzoic acid was added for the purpose of preventing corrosion by halogenated hydrocarbons, but addition of these causes a decrease in the spark generation voltage, so low and medium pressure (250WV
Was limited to the following).
問題点を解決するための手段 本発明は、上述の問題点を解決するもので、従来の電
解液から得られる優れた特性を損なうことなく、電解コ
ンデンサにも洗浄工程を取り入れることが可能な高圧用
の電解液を提供しようとするものである。すなわち、エ
チレングリコールを主溶媒とし、ほう酸または有機酸あ
るいはその塩を溶解してなる電解液に0.5重量％以上の
２−ニトロビフェニールを添加して溶解したことを特徴
とする電解コンデンサの電解液である。Means for Solving the Problems The present invention solves the above-mentioned problems, and it is possible to incorporate a cleaning step into an electrolytic capacitor without impairing the excellent characteristics obtained from conventional electrolytic solutions. The present invention is intended to provide an electrolytic solution for use. That is, in an electrolytic solution of an electrolytic capacitor, characterized in that 0.5% by weight or more of 2-nitrobiphenyl is added and dissolved in an electrolytic solution in which ethylene glycol is used as a main solvent and boric acid or an organic acid or a salt thereof is dissolved. is there.
作用 本発明の電解液は、高圧用アルミニウム電解コンデン
サにおいて、洗浄剤として使用されるハロゲン化炭化水
素がコンデンサケース内に侵入しても塩素イオンの分解
を抑制し、また塩素イオンによるアルミニウム電極の腐
食を防止する。The electrolytic solution of the present invention suppresses the decomposition of chloride ions even when halogenated hydrocarbons used as a cleaning agent enter the capacitor case in a high-pressure aluminum electrolytic capacitor, and also prevents corrosion of aluminum electrodes by chlorine ions. To prevent
実施例 以下、本発明の実施例について説明する。Examples Hereinafter, examples of the present invention will be described.
第１表は、本発明と従来の電解コンデンサに用いた電
解液の組成、比抵抗についての比較例を示す。第１表中
電解液資料記号Ａ、Ｂ、Ｃは従来例、Ｄは本発明例であ
る。Table 1 shows a comparative example of the composition and specific resistance of the electrolytic solution used in the present invention and the conventional electrolytic capacitor. In Table 1, reference symbols A, B, and C of electrolyte solution are conventional examples, and D is an example of the present invention.
第２表は、第１表の電解液を用いて定格400WV、220μ
Ｆのアルミニウム電解コンデンサを試作し、ハロゲン化
炭化水素系の洗浄液に浸漬し、エージングおよび105℃2
000時間の高温負荷試験を行った結果を示す。 Table 2 shows a rating of 400WV, 220μ using the electrolyte of Table 1.
Prototype F aluminum electrolytic capacitor was immersed in a halogenated hydrocarbon cleaning solution, aged and heated to 105 ° C2
The results of a high temperature load test for 000 hours are shown.
本発明に係る電解液試料記号Ｄの電解液を用いた電解
コンデンサは、上述の洗浄液がコンデンサ素子内に侵入
しても、高温負荷試験において腐食発生がなく、全ての
特性に問題なく改良効果が得られている。また２−ニト
ロビフェニールの添加量は0.5重量％以上が好ましく、
添加量が飽和濃度を超えることは好ましくない。なお、
0.5重量％未満では腐食防止効果が不充分である。 The electrolytic capacitor using the electrolytic solution sample symbol D according to the present invention does not cause corrosion in the high temperature load test even if the above-mentioned cleaning solution enters the capacitor element, and all the characteristics are improved without any problem. Has been obtained. The addition amount of 2-nitrobiphenyl is preferably 0.5% by weight or more,
It is not preferable that the added amount exceeds the saturation concentration. In addition,
If it is less than 0.5% by weight, the corrosion prevention effect is insufficient.
発明の効果 以上のように、本発明のエチレングリコールを主溶媒
とし、ほう酸および有機酸あるいはその塩を溶解してな
る電解液に0.5重量％以上の２−ニトロビフェニールを
添加して溶解した電解液を使用したアルミニウム電解コ
ンデンサは洗浄剤に耐え、信頼性が高く、コスト面でも
有利なアルミニウム電解コンデンサが得られ、工業的な
らびに実用的価値の大なるものである。EFFECT OF THE INVENTION As described above, an electrolytic solution prepared by adding 0.5% by weight or more of 2-nitrobiphenyl to an electrolytic solution obtained by dissolving ethylene glycol of the present invention as a main solvent and boric acid and an organic acid or a salt thereof. The aluminum electrolytic capacitor using is capable of withstanding a cleaning agent, has high reliability, and is advantageous in terms of cost, and is of great industrial and practical value.
Claims (1)
または有機酸あるいはその塩を溶解してなる電解液に0.
5重量％以上の２−ニトロビフェニールを添加して溶解
したことを特徴とする電解コンデンサの駆動用電解液。1. An electrolytic solution prepared by dissolving boric acid, an organic acid or a salt thereof using ethylene glycol as a main solvent.
An electrolytic solution for driving an electrolytic capacitor, which is obtained by adding and dissolving 5% by weight or more of 2-nitrobiphenyl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62259087A JP2567418B2 (en) | 1987-10-14 | 1987-10-14 | Electrolytic solution for driving electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62259087A JP2567418B2 (en) | 1987-10-14 | 1987-10-14 | Electrolytic solution for driving electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01100910A JPH01100910A (en) | 1989-04-19 |
| JP2567418B2 true JP2567418B2 (en) | 1996-12-25 |
Family
ID=17329137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62259087A Expired - Fee Related JP2567418B2 (en) | 1987-10-14 | 1987-10-14 | Electrolytic solution for driving electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2567418B2 (en) |
-
1987
- 1987-10-14 JP JP62259087A patent/JP2567418B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01100910A (en) | 1989-04-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19960820 |
|
| R250 | Receipt of annual fees |
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|
| R250 | Receipt of annual fees |
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|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |