JPH0223604A - Electrolytic solution for driving electrolytic capacitor - Google Patents
Electrolytic solution for driving electrolytic capacitorInfo
- Publication number
- JPH0223604A JPH0223604A JP17311788A JP17311788A JPH0223604A JP H0223604 A JPH0223604 A JP H0223604A JP 17311788 A JP17311788 A JP 17311788A JP 17311788 A JP17311788 A JP 17311788A JP H0223604 A JPH0223604 A JP H0223604A
- Authority
- JP
- Japan
- Prior art keywords
- methoxy
- nitrobenzaldehyde
- acid
- nitrobenzoic acid
- electrolytic 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.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 23
- 239000008151 electrolyte solution Substances 0.000 title claims abstract description 13
- CMWKITSNTDAEDT-UHFFFAOYSA-N 2-nitrobenzaldehyde Chemical compound [O-][N+](=O)C1=CC=CC=C1C=O CMWKITSNTDAEDT-UHFFFAOYSA-N 0.000 claims abstract description 10
- YMOMYSDAOXOCID-UHFFFAOYSA-N 3-methoxy-2-nitrobenzoic acid Chemical compound COC1=CC=CC(C(O)=O)=C1[N+]([O-])=O YMOMYSDAOXOCID-UHFFFAOYSA-N 0.000 claims abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 13
- 229910052782 aluminium Inorganic materials 0.000 abstract description 13
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract description 12
- 238000005260 corrosion Methods 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 8
- -1 chlorine ions Chemical class 0.000 abstract description 6
- 229910052801 chlorine Inorganic materials 0.000 abstract description 5
- 239000000460 chlorine Substances 0.000 abstract description 5
- 239000012459 cleaning agent Substances 0.000 abstract description 4
- 150000007524 organic acids Chemical class 0.000 abstract description 4
- 150000003839 salts Chemical class 0.000 abstract description 4
- 239000002904 solvent Substances 0.000 abstract description 4
- ORPBIIFFJYJUHR-UHFFFAOYSA-N 2-methoxy-6-nitrobenzoic acid Chemical compound COC1=CC=CC([N+]([O-])=O)=C1C(O)=O ORPBIIFFJYJUHR-UHFFFAOYSA-N 0.000 abstract description 2
- PWURRRRGLCVBMX-UHFFFAOYSA-N 3-methoxy-4-nitrobenzoic acid Chemical compound COC1=CC(C(O)=O)=CC=C1[N+]([O-])=O PWURRRRGLCVBMX-UHFFFAOYSA-N 0.000 abstract description 2
- ANXBDAFDZSXOPQ-UHFFFAOYSA-N 4-methoxy-3-nitrobenzoic acid Chemical compound COC1=CC=C(C(O)=O)C=C1[N+]([O-])=O ANXBDAFDZSXOPQ-UHFFFAOYSA-N 0.000 abstract description 2
- BXRFQSNOROATLV-UHFFFAOYSA-N 4-nitrobenzaldehyde Chemical compound [O-][N+](=O)C1=CC=C(C=O)C=C1 BXRFQSNOROATLV-UHFFFAOYSA-N 0.000 abstract description 2
- GMSYODOBBOEWCM-UHFFFAOYSA-N 40751-88-0 Chemical compound COC1=C(C(O)=O)C=CC=C1[N+]([O-])=O GMSYODOBBOEWCM-UHFFFAOYSA-N 0.000 abstract description 2
- URADKXVAIGMTEG-UHFFFAOYSA-N 5-methoxy-2-nitrobenzoic acid Chemical compound COC1=CC=C([N+]([O-])=O)C(C(O)=O)=C1 URADKXVAIGMTEG-UHFFFAOYSA-N 0.000 abstract description 2
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- ZETIVVHRRQLWFW-UHFFFAOYSA-N 3-nitrobenzaldehyde Chemical compound [O-][N+](=O)C1=CC=CC(C=O)=C1 ZETIVVHRRQLWFW-UHFFFAOYSA-N 0.000 abstract 1
- 239000004215 Carbon black (E152) Substances 0.000 abstract 1
- 229930195733 hydrocarbon Natural products 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 239000003792 electrolyte Substances 0.000 description 8
- 150000008282 halocarbons Chemical class 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- SLAMLWHELXOEJZ-UHFFFAOYSA-N 2-nitrobenzoic acid Chemical compound OC(=O)C1=CC=CC=C1[N+]([O-])=O SLAMLWHELXOEJZ-UHFFFAOYSA-N 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- IQUPABOKLQSFBK-UHFFFAOYSA-N 2-nitrophenol Chemical compound OC1=CC=CC=C1[N+]([O-])=O IQUPABOKLQSFBK-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
Landscapes
- Detergent Compositions (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
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、かつ低漏れ
電流特性を有す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。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention prevents corrosion of capacitor elements caused by permeation of halogenated hydrocarbons into the capacitors when electrolytic capacitors are cleaned with halogenated hydrocarbons, and reduces corrosion of capacitor elements. The present invention relates to an electrolytic solution for driving an electrolytic capacitor (hereinafter referred to as electrolytic solution) having leakage current characteristics.
従来の技術
従来より低漏れ電流用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を主溶媒とし、アジピ
ン酸、セバシン酸などの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。またアルミニウム電解
コンデンサの電解液では、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。BACKGROUND OF THE INVENTION Conventionally, as an electrolytic solution for aluminum electrolytic capacitors for low leakage current, an electrolytic solution has been used in which an organic acid such as adipic acid or sebacic acid or a salt thereof is dissolved in ethylene glycol as a main solvent. Furthermore, electrolytes for aluminum electrolytic capacitors contain nitrophenol or nitrobenzoic acid to prevent corrosion caused by halogenated hydrocarbons.
発明が解決しようとする問題点
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。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電解液が用いら
れていたが、それらの添加は漏れ電流特性の低下をもた
らすため低漏れ電流用アルミニウム電解コンデンサの電
解液に二トロフェノールあるいはニトロ安息香酸を添加
することはできなかった。Problems to be Solved by the Invention Aluminum electrolytic capacitors require a cleaning process,
During the process of removing solder flux used when attaching to printed circuit boards, halogenated hydrocarbons can penetrate through the rubber stopper and enter the capacitor by immersion in halogenated hydrocarbons used as a cleaning agent or in a steam bath. However, it decomposes to produce chlorine ions, which can corrode capacitor elements. Therefore, electrolytes to which nitrophenol or nitrobenzoic acid has been added have been used to prevent corrosion caused by halogenated hydrocarbons, but since these additions lead to a decrease in leakage current characteristics, aluminum electrolytic capacitors for low leakage current are It was not possible to add ditrophenol or nitrobenzoic acid to the electrolyte.
そこで、低漏れ電流用アルミニウム電解コンデンサを洗
浄する場合には、封口部に樹脂を塗布する対策が行われ
ていたが、コスト高となるなどの問題を有していた。Therefore, when cleaning aluminum electrolytic capacitors for low leakage current, a measure has been taken to coat the sealing portion with resin, but this method has had problems such as high cost.
問題点を解決するだめの手段
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、低漏れ電
流用アルミニウム電解コンデンサにも樹脂を塗布するこ
となく、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 by applying a resin to low leakage current aluminum electrolytic capacitors without sacrificing the excellent properties obtained from conventional electrolytes. The present invention provides an electrolytic solution that can be subjected to a cleaning process without having to do so.
すなわち、エチレングリコールを主溶媒とし、有機酸あ
るいはその塩を溶解してなる電解液にメトキシニトロ安
息香酸、ニトロベンズアルデヒドの内１種以上添加して
溶解したことを特徴とする電解液である。That is, the electrolytic solution is characterized in that one or more of methoxynitrobenzoic acid and nitrobenzaldehyde is added to and dissolved in an electrolytic solution in which an organic acid or a salt thereof is dissolved in ethylene glycol as a main solvent.
なお、上記メトキシニトロ安息香酸は、２−メトキシ−
３−ニトロ安息香酸、２−メトキシ−６ニトロ安息香酸
、３−メトキシ−２−二トロ安息香酸、３−メトキシ−
４−ニトロ安息香酸、４メトキシ−３−ニトロ安息香酸
、５−メトキシ２−二トロ安息香酸であり、上記ニトロ
ベンズアルデヒドは、ｐ−ニトロベンズアルデヒド、ｍ
ニトロベンズアルデヒド、０−ニトロベンズアルデヒド
であることを特徴とする電解液である。Note that the above methoxynitrobenzoic acid is 2-methoxy-
3-nitrobenzoic acid, 2-methoxy-6-nitrobenzoic acid, 3-methoxy-2-nitrobenzoic acid, 3-methoxy-
4-nitrobenzoic acid, 4methoxy-3-nitrobenzoic acid, 5-methoxy2-nitrobenzoic acid, and the nitrobenzaldehyde is p-nitrobenzaldehyde, m
The electrolytic solution is characterized by being nitrobenzaldehyde or 0-nitrobenzaldehyde.
作用
本発明の電解液は、低漏れ電流用アルミニウム電解コン
デンサにおいて、漏れ電流特性を損なうことなく、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。Function: The electrolytic solution of the present invention suppresses the decomposition of chlorine ions in aluminum electrolytic capacitors for low leakage current, even if halogenated hydrocarbons used as cleaning agents enter the capacitor case, without impairing the leakage current characteristics. It also prevents corrosion of aluminum electrodes due to chlorine ions.
実施例 以下、本発明の実施例について説明する。Example Examples of the present invention will be described below.
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、比抵抗および定格５０Ｗ Ｖ 、６．８μＦ
の低漏れ電流用アルミニウム電解コンデンサに使用した
場合の初期漏れ電流特性および８５°Ｃ１０００時間無
負荷放置後の漏れ電流特性についての比較例を示す。Table 1 shows the composition, specific resistance, and rating of 50W V, 6.8μF of the electrolyte used in the present invention and conventional electrolytic capacitors.
A comparative example of the initial leakage current characteristics when used in a low leakage current aluminum electrolytic capacitor and the leakage current characteristics after being left unloaded at 85°C for 1000 hours is shown below.
各々の特性データは試料数１０個の平均値である。Each characteristic data is an average value of 10 samples.
第２表は、本発明と従来の電解液を用いて作成した定格
２００Ｗ Ｖ、４．７μＦのアルミニウム電解コンデン
サを１．１．１−）ジクロロエタン中で５分間超音波洗
浄後、１０５℃定格電圧印加１０００時間後の腐食発生
個数を示す。Table 2 shows aluminum electrolytic capacitors with a rating of 200W V and 4.7μF made using the present invention and conventional electrolytes. The number of corrosion occurrences after 1000 hours of application is shown.
第１表および第２表に示す通り本発明による電解液試料
記号り、Ｂ、Ｆ、Ｇ、Ｈ，ｌ Ｊ、Ｋ、Ｌを用いたアル
ミニウム電解コンデンサは、１．１．１−トリクロロエ
タン中で超音波洗浄を実施したのち、高温度雰囲気中で
印加を行っても腐食の発生はな（、また良好な漏れ電流
特性を示す。As shown in Tables 1 and 2, aluminum electrolytic capacitors using electrolyte sample symbols B, F, G, H, l J, K, and L according to the present invention were prepared in 1.1.1-trichloroethane. After performing ultrasonic cleaning, no corrosion occurs even when applied in a high-temperature atmosphere (and exhibits good leakage current characteristics).
なお、メトキシニトロ安息香酸またはニトロベンズアル
デヒ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各種メトキシニトロ安息香酸
、ニトロベンズアルデヒドの内２種以上を組合せて添加
したものについても同様な効果がある。Note that it is not preferable that the amount of methoxynitrobenzoic acid or nitrobenzaldehyde added exceeds the saturation concentration. In addition to the above-mentioned examples, similar effects can be obtained by adding a combination of two or more of various methoxynitrobenzoic acids and nitrobenzaldehydes.
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、有機酸あるいはその塩を溶解してなる電解液にメト
キシニトロ安息香酸、ニトロベンズアルデヒドの内１種
以上添加して溶解したことを特徴とする電解液を使用す
ることにより、洗浄剤に耐え、信頼性の高く、コスト面
でも有利な低漏れ電流用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
。Effects of the Invention As described above, one or more of methoxynitrobenzoic acid and nitrobenzaldehyde is added and dissolved in an electrolytic solution prepared by using ethylene glycol as a main solvent and dissolving an organic acid or its salt. By using the characteristic electrolyte, it is possible to obtain an aluminum electrolytic capacitor with low leakage current that is resistant to cleaning agents, highly reliable, and advantageous in terms of cost, and is of great industrial and practical value.
Claims (1)
の塩を溶解してなる電解液にメトキシニトロ安息香酸、
ニトロベンズアルデヒドの内１種以上添加して溶解した
ことを特徴とする電解コンデンサの駆動用電解液。Methoxynitrobenzoic acid,
An electrolytic solution for driving an electrolytic capacitor, characterized in that it contains one or more kinds of nitrobenzaldehydes added and dissolved therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63173117A JP2561323B2 (en) | 1988-07-12 | 1988-07-12 | Electrolytic solution for driving electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63173117A JP2561323B2 (en) | 1988-07-12 | 1988-07-12 | Electrolytic solution for driving electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0223604A true JPH0223604A (en) | 1990-01-25 |
| JP2561323B2 JP2561323B2 (en) | 1996-12-04 |
Family
ID=15954455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63173117A Expired - Fee Related JP2561323B2 (en) | 1988-07-12 | 1988-07-12 | Electrolytic solution for driving electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2561323B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7460356B2 (en) * | 2007-03-20 | 2008-12-02 | Avx Corporation | Neutral electrolyte for a wet electrolytic capacitor |
| US12070867B2 (en) | 2021-02-24 | 2024-08-27 | Path Robotics, Inc. | Autonomous welding robots |
| US12277369B2 (en) | 2021-10-18 | 2025-04-15 | Path Robotics, Inc. | Generating simulated weld paths for a welding robot |
| US12358138B2 (en) | 2021-11-19 | 2025-07-15 | Path Robotics, Inc. | Machine learning logic-based adjustment techniques for robots |
-
1988
- 1988-07-12 JP JP63173117A patent/JP2561323B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7460356B2 (en) * | 2007-03-20 | 2008-12-02 | Avx Corporation | Neutral electrolyte for a wet electrolytic capacitor |
| US12070867B2 (en) | 2021-02-24 | 2024-08-27 | Path Robotics, Inc. | Autonomous welding robots |
| US12277369B2 (en) | 2021-10-18 | 2025-04-15 | Path Robotics, Inc. | Generating simulated weld paths for a welding robot |
| US12358138B2 (en) | 2021-11-19 | 2025-07-15 | Path Robotics, Inc. | Machine learning logic-based adjustment techniques for robots |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2561323B2 (en) | 1996-12-04 |
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