JPH03225906A - Electrolyte for electrolytic capacitor - Google Patents
Electrolyte for electrolytic capacitorInfo
- Publication number
- JPH03225906A JPH03225906A JP2063490A JP2063490A JPH03225906A JP H03225906 A JPH03225906 A JP H03225906A JP 2063490 A JP2063490 A JP 2063490A JP 2063490 A JP2063490 A JP 2063490A JP H03225906 A JPH03225906 A JP H03225906A
- Authority
- JP
- Japan
- Prior art keywords
- polyvinyl alcohol
- ester
- electrolyte
- electrolytic capacitor
- ethylene glycol
- 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 25
- 239000003792 electrolyte Substances 0.000 title abstract description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229920002554 vinyl polymer Polymers 0.000 claims abstract description 14
- 239000002904 solvent Substances 0.000 claims abstract description 10
- 239000004327 boric acid Substances 0.000 claims abstract description 8
- 150000003839 salts Chemical class 0.000 claims abstract description 6
- 150000007524 organic acids Chemical class 0.000 claims abstract description 5
- 239000008151 electrolyte solution Substances 0.000 claims description 17
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract description 6
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 abstract description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 abstract description 2
- 238000009835 boiling Methods 0.000 abstract description 2
- 238000004132 cross linking Methods 0.000 abstract description 2
- 239000003431 cross linking reagent Substances 0.000 abstract description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 abstract description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 1
- 125000005619 boric acid group Chemical group 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000009970 fire resistant effect Effects 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- KWIPUXXIFQQMKN-UHFFFAOYSA-N 2-azaniumyl-3-(4-cyanophenyl)propanoate Chemical compound OC(=O)C(N)CC1=CC=C(C#N)C=C1 KWIPUXXIFQQMKN-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229940090948 ammonium benzoate Drugs 0.000 description 1
- SATJMZAWJRWBRX-UHFFFAOYSA-N azane;decanedioic acid Chemical compound [NH4+].[NH4+].[O-]C(=O)CCCCCCCCC([O-])=O SATJMZAWJRWBRX-UHFFFAOYSA-N 0.000 description 1
- ORKKMKUDEPWHTG-UHFFFAOYSA-N azane;nonanedioic acid Chemical compound [NH4+].[NH4+].[O-]C(=O)CCCCCCCC([O-])=O ORKKMKUDEPWHTG-UHFFFAOYSA-N 0.000 description 1
- QUJSFPXBUIZZAC-UHFFFAOYSA-N boric acid;ethane-1,2-diol Chemical class OCCO.OB(O)O QUJSFPXBUIZZAC-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- SPZBYSKKSSLUKN-UHFFFAOYSA-N diazanium;2-butyloctanedioate Chemical compound [NH4+].[NH4+].CCCCC(C([O-])=O)CCCCCC([O-])=O SPZBYSKKSSLUKN-UHFFFAOYSA-N 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- -1 etc. Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 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
- Secondary Cells (AREA)
- Compositions Of Macromolecular Compounds (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用電解液に関し、特に中高圧用
の難燃性を改良した電解コンデンサ用電解液に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an electrolytic solution for electrolytic capacitors, and more particularly to an electrolytic solution for electrolytic capacitors with improved flame retardance for medium and high voltage applications.
（１）
（従来の技術）
従来の中高圧用アルミ電解コンデンサに用いられる電解
液は、エチレングリコールを主溶媒とし、これにホウ酸
やホウ酸アンモニウムを溶解した成分となっている。(1) (Prior Art) The electrolytic solution used in conventional medium-high voltage aluminum electrolytic capacitors has ethylene glycol as its main solvent, and has boric acid or ammonium borate dissolved therein.
このエチレングリコール−ホウ酸系の電解液は、エステ
ル化反応によって生じる縮合水のために多量の水分を生
成し、難燃性を有している。This ethylene glycol-boric acid electrolyte produces a large amount of water due to condensed water produced by the esterification reaction, and has flame retardant properties.
（発明が解決しようとする課題）
しかし、この従来の電解液は、１００℃よりも高い温度
で使用すると、ガスを多量に発生し、電解コンデンサに
設けられている防爆弁が作動し易く、短時間で不良とな
る欠点がある。(Problem to be solved by the invention) However, when this conventional electrolytic solution is used at a temperature higher than 100°C, it generates a large amount of gas, and the explosion-proof valve installed in the electrolytic capacitor tends to operate, causing short-term It has the disadvantage of becoming defective over time.
このガス発生を防止するために、エチレングリコールに
有機酸を溶解した成分の電解液を用いることがある。し
かし、この電解液は、電解コンデンサが過電圧を印加さ
れたり、バンクした際に発生するスパークにより容易に
着火し燃焼するという欠点がある。In order to prevent this gas generation, an electrolytic solution containing an organic acid dissolved in ethylene glycol may be used. However, this electrolytic solution has the disadvantage that it easily ignites and burns due to sparks generated when an overvoltage is applied to the electrolytic capacitor or when the electrolytic capacitor is banked.
本発明は、以上の欠点を改良し、ガス発生を抑（２）
制でき、かつ燃焼し難い電解コンデンサ用電解液を提供
することを目的とする。An object of the present invention is to improve the above-mentioned drawbacks, to provide an electrolytic solution for electrolytic capacitors that can suppress (2) gas generation and is difficult to burn.
（課題を解決するための手段）
請求項１の発明は、上記の目的を達成するために、エチ
レングリコールを主成分とする溶媒に、有ｍｓあるいは
その塩を溶解した電解コンデンサ用電解液において、ポ
リビニルアルコール−ホウ酸エステルを溶解することを
特徴とする電解コンデンサ用電解液を提供するものであ
る。(Means for Solving the Problems) In order to achieve the above object, the invention of claim 1 provides an electrolytic solution for electrolytic capacitors in which ms or a salt thereof is dissolved in a solvent containing ethylene glycol as a main component. The present invention provides an electrolytic solution for an electrolytic capacitor characterized by dissolving polyvinyl alcohol-boric acid ester.
また、請求項２の発明は、エチレングリコールを主成分
とする溶媒に、有ｌ１ｔａあるい）よその塩を溶解した
電解コンデンサ用電解液において、ポリビニルアルコー
ル−リン酸エステルを溶解することを特徴とする電解コ
ンデンサ用電解液を提供するものである。In addition, the invention of claim 2 is characterized in that polyvinyl alcohol-phosphate ester is dissolved in an electrolytic solution for electrolytic capacitors in which polyvinyl alcohol or other salts are dissolved in a solvent containing ethylene glycol as a main component. The present invention provides an electrolytic solution for electrolytic capacitors.
（作用）
エチレングリコール等に有機酸やその塩を溶解している
ためにガス発生を抑制できる。(Function) Since organic acids and their salts are dissolved in ethylene glycol, etc., gas generation can be suppressed.
また、ポリビニルアルコール−ホウ酸エステルやポリビ
ニルアルコール−リン酸エステルは、ボ（３）
リビニルアルコールの水酸基とホウ酸やリン酸とが反応
し、ホウ酸やリン酸が架橋剤として作用し、そのために
三次元化して網目構造となる。これにより、電解液は沸
点が上昇し気化し難くなり、ガス発生が抑制される。In addition, polyvinyl alcohol-boric acid ester and polyvinyl alcohol-phosphoric acid ester are produced by (3) The hydroxyl group of the vinyl alcohol reacts with boric acid or phosphoric acid, and the boric acid or phosphoric acid acts as a crosslinking agent. It becomes three-dimensional and becomes a mesh structure. As a result, the boiling point of the electrolytic solution increases, making it difficult to vaporize, and gas generation is suppressed.
そして架橋によって三次元結合を生じた化合物が気化し
て燃焼するためには、これらの化合物の原子間の結合を
切断して低分子化合物に分解しなければならず、その切
断のために大きなエネルギーを必要とする。そのために
、スパーク等が生じても、そのエネルギーの大部分はこ
の分解のために費やされ、気化した物質を燃焼させ難い
。In order for compounds that have formed three-dimensional bonds due to crosslinking to vaporize and burn, the bonds between atoms in these compounds must be broken and decomposed into low-molecular compounds, and this cutting requires a large amount of energy. Requires. Therefore, even if a spark or the like occurs, most of the energy is spent on this decomposition, making it difficult to burn the vaporized substance.
さらに、ポリビニルアルコール−リン酸エステルには、
熱分解よって生じる低分子化合物を炭素と水に分解する
炭化を生じ易くし、難燃性を高める作用がある。Furthermore, polyvinyl alcohol-phosphate ester has
It has the effect of making it easier to cause carbonization, which is the decomposition of low-molecular compounds produced by thermal decomposition into carbon and water, and improving flame retardancy.
なお、請求項１及び請求項２の発明とも三次元網目構造
を有しているために、イオンの移動を妨げる作用は少な
く、比抵抗はほとんど増大しない。Note that since both the inventions of claims 1 and 2 have a three-dimensional network structure, there is little effect of hindering the movement of ions, and the specific resistance hardly increases.
また、三次元網目４Ｉｌ造を有するこの電解液は高（４
）
温度でも電解紙により保持され、信頼性が高い。In addition, this electrolyte having a three-dimensional mesh structure of 4Il has a high
) It is maintained by electrolytic paper even at high temperatures and has high reliability.
（実施例） 以下、本発明を実施例に基づいて説明する。(Example) Hereinafter, the present invention will be explained based on examples.
主溶媒としてはエチレングリコールを用い、これに、安
息香酸アンモニウムや１．６−デカンジカルボン酸アン
モニウム、アゼライン酸アンモニウム、セバシン酸アン
モニウム等を溶質として溶解する。そしてこの溶媒及び
溶質からなる溶液にポリビニルアルコール−ホウ酸エス
テルやポリビニルアルコール−リン酸エステルを溶解す
る。Ethylene glycol is used as the main solvent, and ammonium benzoate, ammonium 1,6-decanedicarboxylate, ammonium azelaate, ammonium sebacate, etc. are dissolved therein as a solute. Then, polyvinyl alcohol-boric acid ester or polyvinyl alcohol-phosphoric acid ester is dissolved in the solution consisting of this solvent and solute.
次に、本発明の実施例と従来例について、表１の通りの
成分比の電解液として比抵抗及び火花電圧を測定した。Next, for the examples of the present invention and the conventional examples, the specific resistance and spark voltage were measured using electrolytes having the component ratios shown in Table 1.
以下余白。Margin below.
（５）
（６）
（７）
表１によれば、溶媒及び溶質に同じ物質を用いた実施例
１と従来例１、実施例２及び実施例４と従来例２、実施
例３と従来例３、実施例５と従来例４を各々比べると、
比抵抗及び火花電圧がほぼ一致している。(5) (6) (7) According to Table 1, Example 1 and Conventional Example 1, Example 2 and Example 4 and Conventional Example 2, and Example 3 and Conventional Example using the same substances as the solvent and solute. 3. Comparing Example 5 and Conventional Example 4,
The specific resistance and spark voltage are almost the same.
また、実施例１と従来例１の電解液を定格２５０Ｖ、１
０．０００μＦの電解コンデンサの含浸液として用い、
実施例２〜実施例５及び従来例２〜従来例４の電解液を
定格４００Ｖ、４，７００μＦの電解液の含浸液として
用りる。そしてこれ等の電解コンデンサを各１０ケづつ
、過電圧を印（８）
加して破壊状況を調査した。試験条件は、定格電圧２５
０Ｖの電解コンデンサに対しては電圧４００■を印加し
、定格電圧４００Ｖのそれに対しては電圧６００Ｖを印
加し、各々電流３０Ａを流す。In addition, the electrolytes of Example 1 and Conventional Example 1 were rated at 250V and 1
Used as an impregnating liquid for 0.000μF electrolytic capacitors,
The electrolytic solutions of Examples 2 to 5 and Conventional Examples 2 to 4 are used as impregnating solutions with a rating of 400 V and 4,700 μF. Then, overvoltage was applied (8) to each of these 10 electrolytic capacitors and the state of destruction was investigated. The test conditions are rated voltage 25
A voltage of 400V is applied to an electrolytic capacitor of 0V, a voltage of 600V is applied to one of a rated voltage of 400V, and a current of 30A is applied to each capacitor.
結果は、試験に用いた全部の電解コンデンサのキャップ
が破壊した。そして実施例１〜実施例５を含浸した電解
コンデンサは全数白煙を発生するが、発火燃焼はしなか
った。しかし、従来例１〜従来例４を含浸した電解コン
デンサは全数が発火燃焼した。As a result, the caps of all electrolytic capacitors used in the test were destroyed. All of the electrolytic capacitors impregnated with Examples 1 to 5 produced white smoke, but did not ignite and burn. However, all of the electrolytic capacitors impregnated with Conventional Examples 1 to 4 ignited and burned.
（発明の効果）
以上の通り、請求項１の発明においてポリビニルアルコ
ール−ホウ酸エステルを溶解することによりそして請求
項２の発明においてポリビニルアルコール−リン酸エス
テルを溶解することにより難燃性を向上できるとともに
ガス発生を抑制できる電解コンデンサ用電解液が得られ
る。(Effect of the invention) As described above, flame retardancy can be improved by dissolving polyvinyl alcohol-boric ester in the invention of claim 1 and by dissolving polyvinyl alcohol-phosphoric ester in the invention of claim 2. At the same time, an electrolytic solution for electrolytic capacitors that can suppress gas generation is obtained.
Claims (2)
酸あるいはその塩を溶解した電解コンデンサ用電解液に
おいて、ポリビニルアルコール−ホウ酸エステルを溶解
することを特徴とする電解コンデンサ用電解液。(1) An electrolytic solution for electrolytic capacitors in which an organic acid or a salt thereof is dissolved in a solvent containing ethylene glycol as a main component, which is characterized in that polyvinyl alcohol-boric acid ester is dissolved therein.
酸あるいはその塩を溶解した電解コンデンサ用電解液に
おいて、ポリビニルアルコール−リン酸エステルを溶解
することを特徴とする電解コンデンサ用電解液。(2) An electrolytic solution for an electrolytic capacitor, which is an electrolytic solution for an electrolytic capacitor in which an organic acid or a salt thereof is dissolved in a solvent containing ethylene glycol as a main component, and is characterized in that a polyvinyl alcohol-phosphate ester is dissolved therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020634A JPH0626173B2 (en) | 1990-01-31 | 1990-01-31 | Electrolytic solution for electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020634A JPH0626173B2 (en) | 1990-01-31 | 1990-01-31 | Electrolytic solution for electrolytic capacitors |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17990693A Division JPH0763047B2 (en) | 1993-06-25 | 1993-06-25 | Electrolytic solution for electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03225906A true JPH03225906A (en) | 1991-10-04 |
| JPH0626173B2 JPH0626173B2 (en) | 1994-04-06 |
Family
ID=12032664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2020634A Expired - Lifetime JPH0626173B2 (en) | 1990-01-31 | 1990-01-31 | Electrolytic solution for electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0626173B2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5144308A (en) * | 1974-10-14 | 1976-04-15 | Tokushu Eazooru Kk | Funmukino funkosochi |
| JPS5619681A (en) * | 1979-07-26 | 1981-02-24 | Fujitsu Ltd | Manufacture of infrared-ray detecting element |
| JPS59177915A (en) * | 1983-03-28 | 1984-10-08 | 日通工株式会社 | Drive electrolyte |
| JPS6091618A (en) * | 1983-10-25 | 1985-05-23 | 日本ケミコン株式会社 | Electrolyte for electrolytic condenser |
-
1990
- 1990-01-31 JP JP2020634A patent/JPH0626173B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5144308A (en) * | 1974-10-14 | 1976-04-15 | Tokushu Eazooru Kk | Funmukino funkosochi |
| JPS5619681A (en) * | 1979-07-26 | 1981-02-24 | Fujitsu Ltd | Manufacture of infrared-ray detecting element |
| JPS59177915A (en) * | 1983-03-28 | 1984-10-08 | 日通工株式会社 | Drive electrolyte |
| JPS6091618A (en) * | 1983-10-25 | 1985-05-23 | 日本ケミコン株式会社 | Electrolyte for electrolytic condenser |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0626173B2 (en) | 1994-04-06 |
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