JPH02312218A - Electrolyte for driving of electrolytic capacitor - Google Patents
Electrolyte for driving of electrolytic capacitorInfo
- Publication number
- JPH02312218A JPH02312218A JP13407489A JP13407489A JPH02312218A JP H02312218 A JPH02312218 A JP H02312218A JP 13407489 A JP13407489 A JP 13407489A JP 13407489 A JP13407489 A JP 13407489A JP H02312218 A JPH02312218 A JP H02312218A
- Authority
- JP
- Japan
- Prior art keywords
- block copolymer
- polyoxide
- electrolyte
- ethylene
- ratio
- 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 15
- 239000003792 electrolyte Substances 0.000 title abstract description 17
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229920001400 block copolymer Polymers 0.000 claims abstract description 19
- 239000002253 acid Substances 0.000 claims abstract description 10
- 150000003839 salts Chemical class 0.000 claims abstract description 8
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 16
- 239000008151 electrolyte solution Substances 0.000 claims description 15
- 229920001451 polypropylene glycol Polymers 0.000 claims description 13
- 150000007513 acids Chemical class 0.000 claims description 5
- 239000000243 solution Substances 0.000 claims description 5
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 239000004327 boric acid Substances 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 abstract description 8
- 235000010338 boric acid Nutrition 0.000 abstract description 5
- 239000004743 Polypropylene Substances 0.000 abstract description 3
- -1 polypropylene Polymers 0.000 abstract description 3
- 229920001155 polypropylene Polymers 0.000 abstract description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 abstract 5
- 239000005977 Ethylene Substances 0.000 abstract 4
- 229960002645 boric acid Drugs 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 125000005619 boric acid group Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000009918 complex formation Effects 0.000 description 1
- XDCGMERNCDEEBW-UHFFFAOYSA-N diazanium;2-nonylpropanedioate Chemical compound [NH4+].[NH4+].CCCCCCCCCC(C([O-])=O)C([O-])=O XDCGMERNCDEEBW-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 125000001165 hydrophobic group Chemical group 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- WYXIGTJNYDDFFH-UHFFFAOYSA-Q triazanium;borate Chemical compound [NH4+].[NH4+].[NH4+].[O-]B([O-])[O-] WYXIGTJNYDDFFH-UHFFFAOYSA-Q 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Polyethers (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 relates to an electrolytic solution for driving an electrolytic capacitor (hereinafter referred to as electrolytic solution).
従来の技術
従来より高圧用アルミニウム電解コンデンサの電解液に
はエチレングリコールを主体とした溶液にほう酸を溶解
した電解液が多用されている。BACKGROUND OF THE INVENTION Conventionally, an electrolyte solution for high-voltage aluminum electrolytic capacitors has often been an electrolyte solution containing boric acid dissolved in a solution mainly containing ethylene glycol.
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を１０５℃以上の高温度で
使用するとき、従来のエチレングリコールを生体とした
溶液にほう酸を溶解した電解液では、エステル化水の発
生により、信頭性を充分確保できなかった。また炭素数
の多い高級二塩基酸の使用も検討されたが溶解度か低く
実用には至ってない。さらに、側鎖にアルキル基を有す
る高級二塩基酸の使用が検討されているか、高級二塩基
酸は電解液中に水分が存在している条件では、アルミニ
ウムとの錯体形成能力が強いため、水分を含まない電解
液として使用するか、電解液に配合する高級二塩基酸の
配合量を低く抑える必要があった。Problems to be Solved by the Invention When an aluminum electrolytic capacitor is used at a high temperature of 105°C or higher, the conventional electrolyte solution in which boric acid is dissolved in a biological solution of ethylene glycol causes the generation of esterified water. I was not able to secure enough sex. The use of higher dibasic acids with a large number of carbon atoms has also been considered, but the solubility is low and this has not been put to practical use. Furthermore, the use of higher dibasic acids having an alkyl group in their side chains is being considered, and higher dibasic acids have a strong ability to form complexes with aluminum when water is present in the electrolyte. It was necessary to use an electrolytic solution that does not contain dibasic acid, or to keep the amount of higher dibasic acid blended into the electrolytic solution low.
しかし、電解液中の水分を含まない条件での電解コンデ
ンサの製造は事実上、不可能であり、また電解液に配合
する高級二塩基酸の配合量を低く抑えることは結果的に
は比抵抗の高い電解液しか得ることができないこととな
る。またアルミニウムとの錯体形成は電解コンデンサに
おいては静電容量の著しい減少、損失の著しい増加をも
たらすため根本的な対策を必要としていた。However, it is virtually impossible to manufacture electrolytic capacitors without moisture in the electrolyte, and keeping the amount of higher dibasic acid blended in the electrolyte low ultimately results in This means that only an electrolyte with a high concentration can be obtained. Furthermore, complex formation with aluminum causes a significant decrease in capacitance and a significant increase in loss in electrolytic capacitors, so fundamental countermeasures were required.
問題点を解決するための手段
本発明は上記の問題を解決するためエチレングリコール
を主体とした溶液に炭素数１２〜２２で側鎖にアルキル
基を有する高級二塩基酸またはその塩あるいはほう酸ま
たはその塩の中より１種類以上を溶解し、平均分子１１
０００〜４０００のポリ酸化プロピレンとポリ酸化エチ
レンのブロック共重合物を配合した電解液において、下
式で示されるブロック共重合物のポリ酸化エチレン比が
１０〜８０重量％含有するブロック共重合物を上記電解
液に対して０．１重量％以上添加したことを特徴とする
電解コンデンサの駆動用電解液である。Means for Solving the Problems The present invention solves the above problems by adding a higher dibasic acid having 12 to 22 carbon atoms and an alkyl group in the side chain or a salt thereof, or boric acid or its salt to a solution mainly containing ethylene glycol. Dissolve one or more types of salt, with an average molecular weight of 11
In an electrolytic solution containing a block copolymer of polypropylene oxide and polyethylene oxide of 000 to 4000, a block copolymer containing a polyethylene oxide ratio of 10 to 80% by weight of the block copolymer represented by the following formula is used. This is an electrolytic solution for driving an electrolytic capacitor, characterized in that 0.1% by weight or more is added to the electrolytic solution.
）１０− （Ｃ２Ｈ４０） 、＋ （Ｃ３Ｈ６０） ｍ
−（Ｃ２８，０） 、ｌ＋ Ｈｍはポリ酸化プロピレン
の平均分子量の値によって決まる整数
ｎはポリ酸化エチレン比の値によって決まる整数ポリ酸
化エチレン比とはブロック共重合物中におけるポリ酸化
エチレンの含有量をいう。)10- (C2H40), + (C3H60) m
-(C28,0), l+ Hm is an integer determined by the average molecular weight of polypropylene oxide n is an integer determined by the polyethylene oxide ratio Polyethylene oxide ratio is the content of polyethylene oxide in the block copolymer means.
作用
本発明の電解液は、添加したポリ酸化プロピレンと酸化
エチレンのブロック共重合物が疎水基と親水基を有する
ことにより、電解コンデンサのアルミニウム電極を保護
し、静電容量の著しい減少、損失の著しい増加を防止す
るものである。Function The electrolytic solution of the present invention protects the aluminum electrodes of electrolytic capacitors due to the added block copolymer of polypropylene oxide and ethylene oxide having hydrophobic groups and hydrophilic groups, resulting in a significant reduction in capacitance and loss. This is to prevent a significant increase.
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、エチレングリコールに１０重量％の１゜６−
デカンジカルボン酸アンモニウムを配合した電解液に対
し、ポリ酸化プロピレンと酸化エチレレンのブロック共
重合物を添加した本発明にかかる電解液と従来の電解液
を用いた電解コンデンサ（定格４００ＷＶ ２２０μＦ
） （７） １１５℃、定格電圧２０００時間印加の結
果試験を示すものである。Table 1 shows that 10% by weight of 1°6-
An electrolytic capacitor (rated at 400WV, 220μF) using an electrolyte according to the present invention in which a block copolymer of polypropylene oxide and ethylene oxide is added to an electrolyte containing ammonium decanedicarboxylate and a conventional electrolyte (rated at 400WV, 220μF)
) (7) This shows the results of a test at 115°C and rated voltage applied for 2000 hours.
第２表は、エチレングリコールに２５ＭＮ％のほう酸ア
ンモニウムを配合した電解液に対し、ポリ酸化プロピレ
ンと酸化エチレンのブロック共重合物を添加した本発明
にかかる電解液と従来の電解液を用いた電解コンデンサ
（定格４００ＷＶ ２２０μＦ）の１０５℃、定格電圧
２０００時間印加の試験結果を示すものである。Table 2 shows electrolysis using the electrolyte according to the present invention in which a block copolymer of polypropylene oxide and ethylene oxide was added to an electrolyte containing 25MN% ammonium borate in ethylene glycol, and a conventional electrolyte. This shows the test results of a capacitor (rated 400WV 220μF) at 105°C and rated voltage applied for 2000 hours.
第１表および第２表から明らかのようにポリ酸化プロピ
レンとポリ酸化エチレンとからなるブロック共重合物を
添加していない電解液を使用した電解コンデンサ（試料
記号ＡおよびＧ）と比較して本発明の電解液を使用した
電解コンデンサ（試料記号Ｂ、Ｃ，Ｏ，Ｅ、ＦおよびＨ
，ｌ、Ｊ、Ｋ。As is clear from Tables 1 and 2, compared with electrolytic capacitors (sample symbols A and G) using electrolytes to which a block copolymer consisting of polypropylene oxide and polyethylene oxide was not added, Electrolytic capacitors using the electrolyte of the invention (sample symbols B, C, O, E, F and H
, l, J, K.
し）は静電容量、損失いずれも安定な特性を示している
。そして第２表における本発明のいずれの電解液も１１
５〜１４０℃に加熱し、電解液の液面に炎を接触させて
も引火しないことが確認できた。) shows stable characteristics in both capacitance and loss. And any electrolyte of the present invention in Table 2 is 11
It was confirmed that even if the electrolyte was heated to 5 to 140°C and a flame was brought into contact with the surface of the electrolyte, it would not catch fire.
またエチレングリコールを主体とした溶液に炭素数１２
〜２２で側鎖にアルキル基を有する各種高級二塩基酸あ
るいはほう酸およびそれらの塩について各種ポリ酸化プ
ロピレンとポリ酸化エチレンのブロック共重合物の配合
比を変えて評価したがいずれの組成においても同様な効
果がみられた。しかし、ポリ酸化プロピレンとポリ酸化
エチレンのブロック共重合物の添加量が０．１重量％未
満ではその効果の安定性が乏しく、０．１重量％以上の
配合が必要である。またポリ酸化プロピレンとポリ酸化
エチレンのブロック共重合物の飽和溶解量を超える配合
は望ましくない。さらに、平均分子量１０００未溝のポ
リ酸化プロピレンではその効果の再現性が乏しく、４０
００を超える平均分子量では溶解度を確保し得ない。ま
た、ポリ酸化エチレン比が１００重量％未満は溶解度を
確保し得す、８０重量％を超えたポリ酸化エチレン比で
はその効果の再現性が乏しいため、平均分子１１０００
〜４０００のポリ酸化プロピレンとポリ酸化エチレンの
ブロック共重合 物で、ポリ酸化エチレン比が１０〜８
０重！１％であることが望ましい。In addition, a solution mainly composed of ethylene glycol has 12 carbon atoms.
In ~22, various higher dibasic acids or boric acids and their salts having an alkyl group in the side chain were evaluated by changing the blending ratio of block copolymers of various polypropylene oxides and polyethylene oxides, but the results were the same in all compositions. A positive effect was observed. However, if the amount of the block copolymer of polypropylene oxide and polyethylene oxide added is less than 0.1% by weight, the stability of the effect is poor, and it is necessary to add the block copolymer of polypropylene oxide and polyethylene oxide in an amount of 0.1% by weight or more. Further, it is not desirable to blend the block copolymer of polypropylene oxide and polyethylene oxide in excess of the saturated dissolution amount. Furthermore, the reproducibility of the effect is poor with ungrooved polypropylene having an average molecular weight of 1000, and
If the average molecular weight exceeds 0.00, solubility cannot be ensured. In addition, when the polyethylene oxide ratio is less than 100% by weight, solubility can be ensured, but when the polyoxide ratio exceeds 80% by weight, the reproducibility of the effect is poor.
A block copolymer of ~4000 polypropylene oxide and polyethylene oxide, with a polyethylene oxide ratio of 10 to 8.
0 weight! It is desirable that it be 1%.
発明の効果
以上のように本発明に係る電解液を用いることによって
窩温度において安定な高圧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, by using the electrolytic solution according to the present invention, a high-voltage aluminum electrolytic capacitor that is stable at the cavity temperature can be obtained, and is of great industrial and practical value.
Claims (1)
２２で側鎖にアルキル基を有する高級二塩基酸またはそ
の塩、あるいはほう酸またはその塩の中より１種以上を
溶解し、平均分子量が１０００〜４０００のポリ酸化プ
ロピレンとポリ酸化エチレンとからなるブロック共重合
物を配合した電解液において、下式で示されるブロック
共重合物のポリ酸化エチレン比が１０〜８０重量％含有
するブロック共重合物を上記電解液に対して０．１重量
％以上添加したことを特徴とする電解コンデンサの駆動
用電解液。 ＨＯ−（Ｃ＿２Ｈ＿４Ｏ）＿ｎ−（Ｃ＿３Ｈ＿６Ｏ）＿
ｍ−（Ｃ＿２Ｈ＿４Ｏ）＿ｎ−Ｈ＿ｍはポリ酸化プロピ
レンの平均分子量の値によって決まる整数 ｎはポリ酸化エチレン比の値によって決まる整数[Claims] A solution containing ethylene glycol as a main component has 12 or more carbon atoms.
A block consisting of polypropylene oxide and polyethylene oxide having an average molecular weight of 1000 to 4000, in which one or more of higher dibasic acids or salts thereof having an alkyl group in the side chain or boric acid or salts thereof is dissolved in 22. In an electrolytic solution containing a copolymer, 0.1% by weight or more of a block copolymer containing a polyethylene oxide ratio of 10 to 80% by weight of the block copolymer represented by the following formula is added to the electrolytic solution. An electrolytic solution for driving an electrolytic capacitor, which is characterized by the following. HO-(C_2H_4O)_n-(C_3H_6O)_
m-(C_2H_4O)_n-H_m is an integer determined by the average molecular weight of polypropylene oxide n is an integer determined by the value of the polyethylene oxide ratio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13407489A JP2731241B2 (en) | 1989-05-26 | 1989-05-26 | Electrolyte for driving electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13407489A JP2731241B2 (en) | 1989-05-26 | 1989-05-26 | Electrolyte for driving electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02312218A true JPH02312218A (en) | 1990-12-27 |
| JP2731241B2 JP2731241B2 (en) | 1998-03-25 |
Family
ID=15119781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13407489A Expired - Fee Related JP2731241B2 (en) | 1989-05-26 | 1989-05-26 | Electrolyte for driving electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2731241B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5485346A (en) * | 1992-09-29 | 1996-01-16 | Matsushita Electric Industrial Co., Ltd. | Electrolyte for driving electrolytic capacitor and the electrolytic capacitor |
| US5507966A (en) * | 1995-03-22 | 1996-04-16 | Boundary Technologies, Inc. | Electrolyte for an electrolytic capacitor |
| WO1996027201A1 (en) * | 1995-03-02 | 1996-09-06 | Matsushita Electric Industrial Co., Ltd. | Electrolyte solution for driving electrolytic capacitor and electrolytic capacitor made therewith |
| JPH10106892A (en) * | 1996-09-30 | 1998-04-24 | Matsushita Electric Ind Co Ltd | Electrolyte solution for driving electrolytic capacitor and electrolytic capacitor using the same |
| US6690573B2 (en) | 2001-12-18 | 2004-02-10 | Matsushita Electric Industrial Co., Ltd. | Aluminum electrolytic capacitor and method for producing the same |
| JP2006339345A (en) * | 2005-06-01 | 2006-12-14 | Nichicon Corp | Electrolyte for driving of electrolytic capacitor, and electrolytic capacitor using it |
| US7780838B2 (en) | 2004-02-18 | 2010-08-24 | Chemetall Gmbh | Method of anodizing metallic surfaces |
| JP2015222769A (en) * | 2014-05-22 | 2015-12-10 | サン電子工業株式会社 | Electrolytic capacitor |
-
1989
- 1989-05-26 JP JP13407489A patent/JP2731241B2/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5485346A (en) * | 1992-09-29 | 1996-01-16 | Matsushita Electric Industrial Co., Ltd. | Electrolyte for driving electrolytic capacitor and the electrolytic capacitor |
| WO1996027201A1 (en) * | 1995-03-02 | 1996-09-06 | Matsushita Electric Industrial Co., Ltd. | Electrolyte solution for driving electrolytic capacitor and electrolytic capacitor made therewith |
| EP0758787A1 (en) * | 1995-03-02 | 1997-02-19 | Matsushita Electric Industrial Co., Ltd. | Electrolyte solution for driving electrolytic capacitor and electrolytic capacitor made therewith |
| US5776358A (en) * | 1995-03-02 | 1998-07-07 | Matsushita Electric Industrial Co., Ltd. | Electrolyte for driving electrolytic capacitor and electrolytic capacitor using the same |
| EP0758787A4 (en) * | 1995-03-02 | 2005-10-12 | Matsushita Electric Ind Co Ltd | Electrolyte solution for driving electrolytic capacitor and electrolytic capacitor made therewith |
| US5507966A (en) * | 1995-03-22 | 1996-04-16 | Boundary Technologies, Inc. | Electrolyte for an electrolytic capacitor |
| JPH10106892A (en) * | 1996-09-30 | 1998-04-24 | Matsushita Electric Ind Co Ltd | Electrolyte solution for driving electrolytic capacitor and electrolytic capacitor using the same |
| US6690573B2 (en) | 2001-12-18 | 2004-02-10 | Matsushita Electric Industrial Co., Ltd. | Aluminum electrolytic capacitor and method for producing the same |
| US7780838B2 (en) | 2004-02-18 | 2010-08-24 | Chemetall Gmbh | Method of anodizing metallic surfaces |
| JP2006339345A (en) * | 2005-06-01 | 2006-12-14 | Nichicon Corp | Electrolyte for driving of electrolytic capacitor, and electrolytic capacitor using it |
| JP2015222769A (en) * | 2014-05-22 | 2015-12-10 | サン電子工業株式会社 | Electrolytic capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2731241B2 (en) | 1998-03-25 |
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