JP2948252B2 - Electrolyte for driving electrolytic capacitors - Google Patents
Electrolyte for driving electrolytic capacitorsInfo
- Publication number
- JP2948252B2 JP2948252B2 JP3936390A JP3936390A JP2948252B2 JP 2948252 B2 JP2948252 B2 JP 2948252B2 JP 3936390 A JP3936390 A JP 3936390A JP 3936390 A JP3936390 A JP 3936390A JP 2948252 B2 JP2948252 B2 JP 2948252B2
- Authority
- JP
- Japan
- Prior art keywords
- electrolytic
- electrolyte
- electrolytic solution
- capacitor
- electrolytic capacitors
- 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)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (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。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention prevents corrosion of a capacitor element caused by permeation of a halogenated hydrocarbon into a capacitor when the electrolytic capacitor is washed with the halogenated hydrocarbon, and has a life characteristic. The present invention relates to an electrolytic solution for driving an electrolytic capacitor (hereinafter referred to as an electrolytic solution) for improving the performance of the electrolytic capacitor.
従来の技術 従来よりアルミニウム電解コンデンサの電解液とし
て、エチレングリコールあるいはγ−ブチロラクトンに
カルボン酸の塩を溶解した溶液が使用されている。2. Description of the Related Art Conventionally, a solution in which a salt of a carboxylic acid is dissolved in ethylene glycol or γ-butyrolactone has been used as an electrolytic solution for an aluminum electrolytic capacitor.
発明が解決しようとする課題 アルミニウム電解コンデンサにおいては、プリント基
板へ装着してはんだ付けする際に用いるはんだフラック
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
ゲン化炭化水素が電解コンデンサのゴム栓を透過して、
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。Problems to be Solved by the Invention In an aluminum electrolytic capacitor, in a process of removing solder flux used when mounting and soldering on a printed circuit board, immersion in a halogenated hydrocarbon used as a cleaning agent or a steam bath or the like. This halogenated hydrocarbon passes through the rubber stopper of the electrolytic capacitor,
Penetrates into the condenser and decomposes to produce chlorine ions,
The chlorine ions may corrode the capacitor element.
課題を解決するための手段 本発明は、上述の課題を解決するもので、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電解液を
提供するものである。Means for Solving the Problems The present invention solves the above-mentioned problems, and does not impair the excellent characteristics obtained from the conventional electrolytic solution, and provides an electrolytic solution capable of incorporating a washing step into an electrolytic capacitor. To provide.
すなわち、γ−ブチロラクトンを主溶媒とし、有機酸
のアルキルアンモニウム塩を溶解してなる電解液に0.5
重量％以上のペンタエチレンオキサイドを添加したこと
を特徴とする電解コンデンサの電解液である。That is, γ-butyrolactone is used as a main solvent, and 0.5% is added to an electrolyte obtained by dissolving an alkyl ammonium salt of an organic acid.
An electrolytic solution for an electrolytic capacitor, wherein pentaethylene oxide is added in an amount of at least% by weight.
作用 本発明の電解液は、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浸入しても塩素イオ
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。Effect The electrolytic solution of the present invention suppresses decomposition of chloride ions even when halogenated hydrocarbons used as a cleaning agent enter the capacitor case, and prevents corrosion of aluminum electrodes due to chloride ions.
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
電解試料記号Ａは従来例、Ｂは比較例、Ｃ、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, symbol A for the electrolytic sample is a conventional example, B is a comparative example, and C and D are examples of the present invention.
における耐電圧を示す。 Shows the withstand voltage at.
第２表は第１表の電解液を用いて定格50WV、22μＦ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
水素系洗浄剤（トリクロールエタン）の洗浄液に浸漬
し、エージングおよび105℃2000時間の高温負荷試験を
行った結果を示す。 Table 2 shows a trial manufacture of a 50 WV, 22 μF aluminum electrolytic capacitor using the electrolytic solution shown in Table 1, immersion in a cleaning solution of a halogenated hydrocarbon-based cleaning agent (trichlorethane), aging and 105 ° C. for 2,000 hours. The result of performing a high temperature load test is shown.
本発明に係る電解液試料記号Ｃ、Ｄ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浸入して
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 electrolytic solution using the electrolytic solutions of the sample symbols C and D according to the present invention does not cause corrosion in the high-temperature load test even if the above-described cleaning solution enters the capacitor element, and has no problem in all the characteristics, and has an improvement effect. Has been obtained.
また、ペンタエチレンオキサイドの添加量は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。The amount of pentaethylene oxide added is preferably 0.5% by weight or more, and it is not preferable that the amount added exceeds the saturation concentration.
なお、0.5重量％未満では腐食防止効果が不十分であ
る。If the amount is less than 0.5% by weight, the effect of preventing corrosion is insufficient.
発明の効果 以上のように本発明の電解液を使用した電解コンデン
サは洗浄剤に耐え、信頼性が高く、コスト面でも有利と
なり、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 capacitor using the electrolytic solution of the present invention withstands a cleaning agent, has high reliability, is advantageous in cost, and has great industrial and practical value.
Claims (1)
のアルキルアンモニウム塩を溶解してなる電解液に、0.
5重量％以上のペンタエチレンオキサイドを添加して溶
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 electrolyte prepared by dissolving an alkyl ammonium salt of an organic acid using γ-butyrolactone as a main solvent contains 0.1 g of an organic acid.
An electrolytic solution for driving an electrolytic capacitor, wherein 5% by weight or more of pentaethylene oxide is added and dissolved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3936390A JP2948252B2 (en) | 1990-02-20 | 1990-02-20 | Electrolyte for driving electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3936390A JP2948252B2 (en) | 1990-02-20 | 1990-02-20 | Electrolyte for driving electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03241810A JPH03241810A (en) | 1991-10-29 |
| JP2948252B2 true JP2948252B2 (en) | 1999-09-13 |
Family
ID=12550982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3936390A Expired - Fee Related JP2948252B2 (en) | 1990-02-20 | 1990-02-20 | Electrolyte for driving electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2948252B2 (en) |
-
1990
- 1990-02-20 JP JP3936390A patent/JP2948252B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03241810A (en) | 1991-10-29 |
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