JPH0626173B2 - Electrolytic solution for electrolytic capacitors - Google Patents
Electrolytic solution for electrolytic capacitorsInfo
- Publication number
- JPH0626173B2 JPH0626173B2 JP2020634A JP2063490A JPH0626173B2 JP H0626173 B2 JPH0626173 B2 JP H0626173B2 JP 2020634 A JP2020634 A JP 2020634A JP 2063490 A JP2063490 A JP 2063490A JP H0626173 B2 JPH0626173 B2 JP H0626173B2
- Authority
- JP
- Japan
- Prior art keywords
- electrolytic
- electrolytic solution
- solution
- capacitors
- electrolytic 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 - Lifetime
Links
- 239000003990 capacitor Substances 0.000 title claims description 18
- 239000008151 electrolyte solution Substances 0.000 title claims description 18
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 18
- 229910019142 PO4 Inorganic materials 0.000 claims description 6
- 239000010452 phosphate Substances 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 229920002554 vinyl polymer Polymers 0.000 claims description 5
- 150000007524 organic acids Chemical class 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 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
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- -1 phosphate ester Chemical class 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 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
- 239000004372 Polyvinyl alcohol Substances 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
- 238000009835 boiling Methods 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 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
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 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
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 230000000717 retained effect Effects 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
- Compositions Of Macromolecular Compounds (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。Description: TECHNICAL FIELD The present invention relates to an electrolytic solution for an electrolytic capacitor, and more particularly to an electrolytic solution for an electrolytic capacitor having improved flame retardancy for medium and high pressure.
（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。(Prior Art) An electrolytic solution used in a conventional medium- and high-voltage aluminum electrolytic capacitor has ethylene glycol as a main solvent and 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-based electrolytic solution has a large amount of water due to condensed water generated by the esterification reaction, and has flame retardancy.
（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易い欠点がある。そ
のため、この電解液を用いた電解コンデンサは、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。(Problems to be Solved by the Invention) However, this conventional electrolytic solution has a drawback that a large amount of gas is easily generated when used at a temperature higher than 100 ° C. Therefore, in the electrolytic capacitor using this electrolytic solution, the explosion-proof valve provided is easy to operate, and becomes defective in a short 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、パ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 of a component obtained by dissolving an organic acid in ethylene glycol may be used. However, this electrolytic solution has a drawback that it is easily ignited and burned by a spark generated when an overvoltage is applied to the electrolytic capacitor or when the electrolytic capacitor is punctured.
本発明は、以上の欠点を改良し、ガス発生を抑制でき、
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。The present invention improves the above drawbacks and can suppress gas generation,
Moreover, it is an object of the present invention to provide an electrolytic solution for an electrolytic capacitor that is difficult to burn.
（課題を解決するための手段） 本発明は、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、有機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を提供するものである。(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention provides 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. Disclosed is an electrolytic solution for an electrolytic capacitor, which is characterized by dissolving a phosphate ester.
（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
ためガス発生を抑制できる。(Function) Since the organic acid or its salt is dissolved in ethylene glycol or the like, gas generation can be suppressed.
また、ポリビニルアルコール−リン酸エステルは、ポリ
ビニルアルコールの水酸基とリン酸とが反応し、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。Further, in the polyvinyl alcohol-phosphate ester, the hydroxyl group of polyvinyl alcohol and phosphoric acid react with each other, and the phosphoric acid acts as a cross-linking agent, so that it becomes three-dimensional and has a network structure. As a result, the electrolytic solution has a higher boiling point and is less likely to be vaporized, 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。Then, in order for the compound that has generated a three-dimensional bond due to cross-linking to vaporize and burn, the bonds between the atoms of these compounds must be broken to decompose the low-molecular compound, and a large amount of energy is required for the breaking. I need. for that reason,
Even if a spark or the like occurs, most of the energy is spent for this decomposition, and it is 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、
熱分解に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。In addition, polyvinyl alcohol-phosphate ester,
It has the effect of facilitating carbonization, which decomposes low-molecular compounds generated by thermal decomposition into carbon and water, and increases flame retardancy.
なお、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。Since it has a three-dimensional network structure, it has little effect on the movement of ions, and the specific resistance hardly increases.
また、三次元網目構造を有するこの電解液は高温度でも
電解紙により保持され、信頼性が高い。Further, this electrolytic solution having a three-dimensional network structure is retained by the electrolytic paper even at high temperature 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 described 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−リン酸エス
テルを溶解する。Ethylene glycol is used as a main solvent, and ammonium benzoate, ammonium 1,6-decanedicarboxylate, ammonium azelaate, ammonium sebacate, etc. are dissolved therein as a solute. Then, polyvinyl alcohol-phosphate ester is dissolved in a solution composed of this solvent and solute.
次に、本発明の実施例を従来例について、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, the specific resistance and the spark voltage were measured as an electrolytic solution having the component ratios shown in Table 1 with respect to the conventional example of the present invention.
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２、実施例２と従来例３とを各々比較する
と、比抵抗及び火花電圧がほぼ一致している。 According to Table 1, when Example 1 and Conventional Example 2 and Example 2 and Conventional Example 3 using the same substance as the solvent and the solute are compared, respectively, the specific resistance and the spark voltage are almost the same.
また、これ等の電解液を定格４００Ｖ、４．７００μＦ
の電解コンデンサの含浸液として用いる。そしてこれ等
の電解コンデンサを各１０ケづつ、過電圧を印加して破
壊状況を調査した。試験は、電圧６００Ｖを印加し、電
流３０Ａを流して行った。In addition, these electrolytes are rated at 400V, 4.700μF
It is used as an impregnating solution for electrolytic capacitors. Then, each of these electrolytic capacitors was applied with an overvoltage, and the breakdown state was investigated. The test was performed by applying a voltage of 600 V and flowing a current of 30 A.
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及び実施例２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３を含浸した電解コ
ンデンサは全数が発火燃焼した。The result was that the caps of all electrolytic capacitors used in the test were broken. The electrolytic capacitors impregnated with Example 1 and Example 2 generated all white smoke, but did not ignite and burn. However, all electrolytic capacitors impregnated with Conventional Example 1 to Conventional Example 3 ignited and burned.
（発明の効果） 以上の通り、本発明によれば、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。(Effects of the Invention) As described above, according to the present invention, polyvinyl alcohol-
By dissolving the phosphate ester, it is possible to obtain an electrolytic solution for an electrolytic capacitor which can improve flame retardancy and suppress gas generation.
Claims (1)
に、有機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。1. An electrolytic solution for an electrolytic capacitor, wherein a polyvinyl alcohol-phosphate ester is dissolved in 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.
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 JPH03225906A (en) | 1991-10-04 |
| JPH0626173B2 true 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) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5144308A (en) * | 1974-10-14 | 1976-04-15 | Tokushu Eazooru Kk | Funmukino funkosochi |
| JPS6025032B2 (en) * | 1979-07-26 | 1985-06-15 | 富士通株式会社 | Manufacturing method of infrared sensing 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
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03225906A (en) | 1991-10-04 |
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