JP2567459B2 - Electrolytic solution for driving electrolytic capacitors - Google Patents
Electrolytic solution for driving electrolytic capacitorsInfo
- Publication number
- JP2567459B2 JP2567459B2 JP63165299A JP16529988A JP2567459B2 JP 2567459 B2 JP2567459 B2 JP 2567459B2 JP 63165299 A JP63165299 A JP 63165299A JP 16529988 A JP16529988 A JP 16529988A JP 2567459 B2 JP2567459 B2 JP 2567459B2
- Authority
- JP
- Japan
- Prior art keywords
- electrolytic
- electrolytic solution
- nitrobenzamide
- driving
- capacitor
- 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)
- Secondary Cells (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
を向上させる中高圧用電解コンデンサの駆動用電解液に
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 medium- and high-voltage electrolytic capacitor, which improves
従来の技術 従来よりアルミニウム電解コンデンサの駆動用電解液
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
的としてニトロフェノールあるいはニトロ安息香酸を添
加したものが用いられていた。2. Description of the Related Art Conventionally, as an electrolytic solution for driving an aluminum electrolytic capacitor, an electrolytic solution containing ethylene glycol as a main solvent and boric acid and an organic acid or a salt thereof is used. In addition, nitrophenol 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 しかしながら、アルミニウム電解コンデンサに対して
は、洗浄工程や、印刷基板へ取り付けする時に用いるハ
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、このハロゲン化炭素水素がゴム栓を透過してコンデ
ンサ内に侵入し、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。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, for an aluminum electrolytic capacitor, in a cleaning process or a solder flux removing process used when attaching to a printed board, immersion in a halogenated hydrocarbon used as a cleaning agent or In a steam bath or the like, the carbon hydrogen halide permeates the rubber stopper and enters the capacitor, decomposes to generate chlorine ions, and the chlorine ions sometimes corrode the capacitor element.
そこで、ハロゲン化炭化水素による腐食防止を目的と
してニトロフェノールあるいはニトロ安息香酸を添加し
たものが用いられていたが、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（100WV以下）に限定され
ていた。Therefore, nitrophenol or nitrobenzoic acid was added for the purpose of preventing corrosion by halogenated hydrocarbons, but their addition is limited to low pressure (100 WV or less) because it causes a decrease in spark generation voltage. It was
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中高圧用
電解液を提供するものである。すなわち、エチレングリ
コールを主溶媒とし、これに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ニトロベンズアミドを
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（以下電解液という）である。Means for Solving the Problems The present invention solves the above-mentioned problems and does not impair the excellent characteristics obtained from conventional electrolytic solutions, and it is possible to incorporate a cleaning step into electrolytic capacitors. An electrolytic solution for use is provided. That is, a driving electrolytic solution for an electrolytic capacitor characterized in that ethylene glycol is used as a main solvent, and nitrobenzamide is added to and dissolved in an electrolytic solution obtained by dissolving boric acid and an organic acid or a salt thereof (hereinafter referred to as electrolytic solution). That is).
そして上記ニトロベンズアミドはｏ−ニトロベンズア
ミド、ｍ−ニトロベンズアミド、ｐ−ニトロベンズアミ
ド、のうち少なくとも一種からなる。The nitrobenzamide comprises at least one of o-nitrobenzamide, m-nitrobenzamide and p-nitrobenzamide.
作用 本発明の電解液は、中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添加したニトロ
化合物の分解抑制作用により塩素イオンの遊離を防止す
るため、電解液の塩素イオン濃度の増加を防止し、アル
ミニウム電極の腐食を防止する。Effect The electrolytic solution of the present invention prevents the release of chloride ions by suppressing the decomposition of the added nitro compound even when the halogenated hydrocarbon used as a cleaning agent enters the capacitor case in the medium and high voltage aluminum electrolytic capacitors. Therefore, the chloride ion concentration in the electrolytic solution is prevented from increasing and the aluminum electrode is prevented from corroding.
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
電解液試料記号Ａ、Ｂ、Ｃは従来例、Ｄ、Ｅ、Ｆ、Ｇ、
Ｈ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. Electrolyte sample symbols A, B, and C in Table 1 are conventional examples, D, E, F, G, and
H is an example of the present invention.
第２表は、第１表の電解液を用いて定格250WV220μＦ
のアルミニウム電解コンデンサを試作し、１、１、１−
トリクロロエタンに浸漬した後、105℃2000時間の高温
負荷試験を行った結果を示す。 Table 2 shows the rated 250WV 220μF using the electrolyte of Table 1.
Prototype aluminum electrolytic capacitor, 1, 1, 1-
The results of a high temperature load test at 105 ° C for 2000 hours after immersion in trichloroethane are shown.
本発明に係る電解液試料記号Ｄ、Ｅ、Ｆ、Ｇ、Ｈの電
解液を用いたものは、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。 The electrolyte using the electrolyte samples D, E, F, G, and H 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.
The improvement effect is obtained without any problem in all characteristics.
また、ニトロベンズアミドの添加量が飽和濃度を超え
ることは好ましくない。そして上述の実施例の他ｏ−ニ
トロベンズアミド、ｍ−ニトロベンズアミド、ｐ−ニト
ロベンズアミド、のうち二種以上を添加したものにおい
ても同様な効果が得られた。Further, it is not preferable that the added amount of nitrobenzamide exceeds the saturation concentration. In addition to the above-mentioned examples, the same effect was obtained even when two or more kinds of o-nitrobenzamide, m-nitrobenzamide and p-nitrobenzamide were added.
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ｏ−ニトロベンズアミド、ｍ−ニトロベンズ
アミド、ｐ−ニトロベンズアミドを添加して溶解したこ
とを特徴とする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もるのである。Effects of the Invention As described above, o-nitrobenzamide, m-nitrobenzamide, p-nitrobenzamide was added to an electrolytic solution obtained by dissolving boric acid and an organic acid or a salt thereof using ethylene glycol of the present invention as a main solvent. The aluminum electrolytic capacitor using the electrolytic solution characterized by being dissolved is a highly reliable aluminum electrolytic capacitor that can withstand cleaning agents and is cost effective, and has great industrial and practical value. Of.
Claims (1)
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
液にニトロベンズアミド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 for driving an electrolytic capacitor, characterized in that ethylene glycol is used as a main solvent, and nitrobenzamide is added to and dissolved in an electrolytic solution prepared by dissolving boric acid and an organic acid or a salt thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63165299A JP2567459B2 (en) | 1988-07-02 | 1988-07-02 | Electrolytic solution for driving electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63165299A JP2567459B2 (en) | 1988-07-02 | 1988-07-02 | Electrolytic solution for driving electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0215610A JPH0215610A (en) | 1990-01-19 |
| JP2567459B2 true JP2567459B2 (en) | 1996-12-25 |
Family
ID=15809694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63165299A Expired - Fee Related JP2567459B2 (en) | 1988-07-02 | 1988-07-02 | Electrolytic solution for driving electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2567459B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3612672B2 (en) * | 1995-03-28 | 2005-01-19 | マルコン電子株式会社 | Electrolytic solution for electrolytic capacitor drive |
-
1988
- 1988-07-02 JP JP63165299A patent/JP2567459B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0215610A (en) | 1990-01-19 |
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| LAPS | Cancellation because of no payment of annual fees |