JP2929019B2 - Electrolytic capacitor and its sealing body - Google Patents
Electrolytic capacitor and its sealing bodyInfo
- Publication number
- JP2929019B2 JP2929019B2 JP1324565A JP32456589A JP2929019B2 JP 2929019 B2 JP2929019 B2 JP 2929019B2 JP 1324565 A JP1324565 A JP 1324565A JP 32456589 A JP32456589 A JP 32456589A JP 2929019 B2 JP2929019 B2 JP 2929019B2
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- sealing body
- electrolytic capacitor
- phenolic resin
- baked
- 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
- 239000003990 capacitor Substances 0.000 title claims description 21
- 238000007789 sealing Methods 0.000 title claims description 17
- 229920001971 elastomer Polymers 0.000 claims description 23
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 claims description 12
- 239000005011 phenolic resin Substances 0.000 claims description 11
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 9
- 229920001568 phenolic resin Polymers 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 229920005549 butyl rubber Polymers 0.000 claims description 6
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 claims description 5
- 150000001451 organic peroxides Chemical class 0.000 claims description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 5
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- HZNQSWJZTWOTKM-UHFFFAOYSA-N 2,3,4-trimethoxybenzoic acid Chemical compound COC1=CC=C(C(O)=O)C(OC)=C1OC HZNQSWJZTWOTKM-UHFFFAOYSA-N 0.000 description 2
- SATJMZAWJRWBRX-UHFFFAOYSA-N azane;decanedioic acid Chemical compound [NH4+].[NH4+].[O-]C(=O)CCCCCCCCC([O-])=O SATJMZAWJRWBRX-UHFFFAOYSA-N 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- SQHGGAHUNVVVNZ-UHFFFAOYSA-L phthalate;tetraethylazanium Chemical compound CC[N+](CC)(CC)CC.CC[N+](CC)(CC)CC.[O-]C(=O)C1=CC=CC=C1C([O-])=O SQHGGAHUNVVVNZ-UHFFFAOYSA-L 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000010407 anodic oxide Substances 0.000 description 1
- 239000000010 aprotic solvent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 ethylene, propylene Chemical group 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、電解コンデンサおよびその封口体に関する
ものである。Description: TECHNICAL FIELD The present invention relates to an electrolytic capacitor and a sealing body thereof.
［従来の技術］ 電解コンデンサは、陽極酸化（化成）により表面に陽
極酸化皮膜を有する弁作用金属を大１の電極とし、第２
の電極（対極）との間に直接、あるいはセパレータを介
在させて巻回したコンデンサ素子に種々の極性溶媒に電
解質として種々の有機カルボン酸またはその塩を溶解せ
しめた駆動用電解液を含浸し、封口体として、紙・フェ
ノール樹脂積層板にゴムを貼り合わせた構造か、もしく
はフェノール樹脂板にエチレン・プロピレン・ターポリ
マー（EPT）ゴムを焼き付け一体成形した構造のものを
使用し、ケース内に封入した構造を有する。[Prior Art] An electrolytic capacitor uses a valve metal having an anodic oxide film on its surface by anodic oxidation (chemical formation) as a large electrode and a second electrode.
A driving electrolyte obtained by dissolving various organic carboxylic acids or salts thereof as electrolytes in various polar solvents in a capacitor element wound directly or between the electrodes (counter electrode) or with a separator interposed therebetween, Use a sealing material with a structure in which rubber is bonded to a paper / phenolic resin laminate or a structure in which ethylene, propylene, and terpolymer (EPT) rubber is baked and molded integrally with the phenolic resin, and sealed in the case It has the following structure.
［発明が解決しようとする課題］ 紙・フェノール樹脂積層板にゴムを貼り合わせた構造
の封口体を用いた電解コンデンサは、高温下において駆
動用電解液が積層板を膨潤させ、電解コンデンサに悪影
響を及ぼす不純物イオンを抽出し、電解コンデンサ内部
の電極引き出しリードや電極箔を腐食することがある。
また、フェノール樹脂成形板にEPTゴムを焼き付け一体
成形した封口体を用いた電解コンデンサは、ゴムがEPT
であるため、特に非プロトン溶媒を用いた駆動用電解液
のとき、高温下において溶媒の蒸発速度が大きく、長寿
命高信頼性化が図れないものである。[Problems to be Solved by the Invention] In an electrolytic capacitor using a sealing body having a structure in which rubber is bonded to a paper / phenolic resin laminate, a driving electrolyte swells the laminate at high temperatures, and adversely affects the electrolytic capacitor. Extraction of the impurity ions that cause the corrosion may corrode the electrode lead and electrode foil inside the electrolytic capacitor.
In the case of electrolytic capacitors that use a sealing body that is integrally molded by baking EPT rubber on a phenolic resin molded plate,
Therefore, especially in the case of a driving electrolyte using an aprotic solvent, the evaporation rate of the solvent is high at a high temperature, and a long life and high reliability cannot be achieved.
［課題を解決するための手段］ 本発明は上述の問題点を解決し、電解コンデンサの高
温度下における長寿命高信頼性化を図るために、特に封
口体の構造材料の一つであるゴム材質を変更することに
よってこれを可能としたものである。すなわち、ゴム材
質としてジビニルベンゼン共重合ブチルゴムとエチレン
・プロピレン系共重合ゴムと有機過酸化物とを含有して
なるゴム組成物をフェノール樹脂成形板に焼き付け一体
構造とした封口体を用いることにある。本発明に係るゴ
ム組成物においては、ジビニルベンゼン共重合ブチルゴ
ムの比率は20〜80wt％、エチレン・プロピレン系共重合
ゴムの比率は80〜20wt％が好ましい。[Means for Solving the Problems] The present invention solves the above-mentioned problems, and in order to achieve long life and high reliability under high temperature of an electrolytic capacitor, a rubber which is one of structural materials of a sealing body is particularly used. This is made possible by changing the material. That is, a rubber composition containing divinylbenzene copolymerized butyl rubber, ethylene / propylene copolymerized rubber and an organic peroxide as a rubber material is baked on a phenolic resin molded plate to use a sealing body having an integrated structure. . In the rubber composition according to the present invention, the ratio of the divinylbenzene copolymerized butyl rubber is preferably 20 to 80 wt%, and the ratio of the ethylene / propylene copolymer rubber is preferably 80 to 20 wt%.
以下に、本発明に係る実施例を詳述する。 Hereinafter, examples according to the present invention will be described in detail.
［実施例］ 〈実施例１〉 直径35mmで、厚さ2mmのフェノール樹脂成形板にゴム
材質としてジビニルベンゼン共重合ブチルゴムとエチレ
ン・プロピレン系共重合ゴムと有機過酸化物とを含有し
てなるゴム組成物を厚さ1mmとなるように焼き付け封口
体を作製した。そして、この封口体を用い、コンデンサ
素子に駆動用電解液としてエチレングリコール（85wt
％）、セバシン酸アンモニウム（9wt％）、水（3wt
％）、硼酸（2wt％）、トリメトキシ安息香酸（1wt％）
からなる組成のものを用いて定格350V・330μＦ（φ35
×40l）の電解コンデンサを作製した。[Example] <Example 1> Rubber comprising divinylbenzene copolymerized butyl rubber, ethylene / propylene copolymerized rubber and organic peroxide as rubber materials on a phenolic resin molded plate having a diameter of 35 mm and a thickness of 2 mm. The composition was baked so as to have a thickness of 1 mm to prepare a sealed body. Then, using this sealing body, ethylene glycol (85 wt.
%), Ammonium sebacate (9 wt%), water (3 wt%
%), Boric acid (2wt%), trimethoxybenzoic acid (1wt%)
350V ・ 330μF (φ35
× 40 l) of electrolytic capacitors.
〈実施例２〉 直径30mmで、厚さ2mmのフェノール樹脂成形板にゴム
材質としてジビニルベンゼン共重合ブチルゴムとエチレ
ン・プロピレン系共重合ゴムと有機過酸化物とを含有し
てなるゴム組成物を厚さ1mmとなるように焼き付け封口
体を作製した。そして、この封口体を用い、コンデンサ
素子に駆動用電解液としてγ−ブチロラクトン（80wt
％）、フタル酸テトラエチルアンモニウム（20wt％）か
らなる組成のものを用いて定格10V・39000μＦ（φ30×
40l）の電解コンデンサを作製した。Example 2 A phenolic resin molded plate having a diameter of 30 mm and a thickness of 2 mm was coated with a rubber composition containing divinylbenzene copolymerized butyl rubber, ethylene / propylene copolymerized rubber, and an organic peroxide as rubber materials. A baked sealing body was prepared so as to have a thickness of 1 mm. Then, using this sealing body, γ-butyrolactone (80 wt.
%), Using a composition consisting of tetraethylammonium phthalate (20wt%), rated at 10V / 39000μF (φ30 ×
A 40 l) electrolytic capacitor was produced.
〈比較例１〉 直径35mmで、厚さ2mmのフェノール樹脂成形板にEPTゴ
ムを厚さ1mmとなるように焼き付け封口体を作製した。
そして、この封口体を用い、コンデンサ素子に駆動用電
解液としてエチレングリコール（85wt％）、セバシン酸
アンモニウム（9wt％）、水（3wt％）、硼酸（2wt
％）、トリメトキシ安息香酸（1wt％）からなる組成の
ものを用いて定格350V・330μＦ（φ35×40l）の電解コ
ンデンサを作製した。<Comparative Example 1> An EPT rubber was baked on a phenol resin molded plate having a diameter of 35 mm and a thickness of 2 mm so as to have a thickness of 1 mm to prepare a sealing body.
Then, using this sealing body, ethylene glycol (85 wt%), ammonium sebacate (9 wt%), water (3 wt%), boric acid (2 wt%)
%) And trimethoxybenzoic acid (1 wt%) to produce an electrolytic capacitor rated at 350 V and 330 μF (φ35 × 40 l).
〈比較例２〉 直径35mmで、厚さ2mmのフェノール樹脂成形板にEPTゴ
ムを厚さ1mmとなるように焼き付け封口体を作製した。
そして、この封口体を用い、コンデンサ素子に駆動用電
解液としてγ−ブチロラクトン（80wt％）、フタル酸テ
トラエチルアンモニウム（20wt％）からなる組成のもの
を用いて定格10V・39000μＦ（φ30×40l）の電解コン
デンサを作製した。<Comparative Example 2> An EPT rubber was baked on a phenol resin molded plate having a diameter of 35 mm and a thickness of 2 mm so as to have a thickness of 1 mm to prepare a sealing body.
Then, using the sealing body, a capacitor element having a composition of γ-butyrolactone (80 wt%) and tetraethylammonium phthalate (20 wt%) as a driving electrolyte is rated at 10 V / 39000 μF (φ30 × 40 l). An electrolytic capacitor was manufactured.
次に、実施例１と比較例１の各電解コンデンサ（ｎ＝
８）を試料として、130℃の雰囲気中において定格電圧
に0.76A（120Hz）のリプル電流を重畳してリプル重畳高
温負荷試験を行なった。その結果を第１表に示す。測定
値は平均値である。Next, the electrolytic capacitors of Example 1 and Comparative Example 1 (n =
The sample 8) was subjected to a ripple superimposed high-temperature load test by superimposing a ripple current of 0.76 A (120 Hz) on the rated voltage in an atmosphere at 130 ° C. Table 1 shows the results. The measured values are average values.
また、実施例２と比較例２の各電解コンデンサ（ｎ＝
８）を試料として、先ず液温40℃の1,1,1−トリクロロ
エタン中にて15分間超音波洗浄を実施した。この電解コ
ンデンサを110℃の雰囲気中において定格電圧を印加し
て高温負荷試験を行なった。その結果を第２表に示す。
測定値は平均値である。 Further, each of the electrolytic capacitors of Example 2 and Comparative Example 2 (n =
Using 8) as a sample, first, ultrasonic cleaning was performed in 1,1,1-trichloroethane at a liquid temperature of 40 ° C. for 15 minutes. This electrolytic capacitor was subjected to a high-temperature load test by applying a rated voltage in an atmosphere at 110 ° C. Table 2 shows the results.
The measured values are average values.
［発明の効果］ 第１表から分かるように、従来例ではリプル重畳高温
負荷試験において、初期値に対する静電容量の変化率が
約−22.5％と大きく、また等価直列抵抗の変化は約1.9
倍と大きいものである。これに対して実施例では静電容
量の変化率は約−4.5％、等価直列抵抗の変化率は約1.3
倍と従来例に比較して著しく小さいものである。 [Effects of the Invention] As can be seen from Table 1, in the conventional example, in the ripple superimposed high-temperature load test, the rate of change of the capacitance with respect to the initial value is as large as about -22.5%, and the change of the equivalent series resistance is about 1.9.
It is twice as large. On the other hand, in the embodiment, the change rate of the capacitance is about -4.5%, and the change rate of the equivalent series resistance is about 1.3%.
It is twice as small as the conventional example.
また、第２表から分かるように、従来例では高温負荷
試験において、初期値に対する静電容量の変化率が約−
18％と大きく、また等価直列抵抗の変化率は約1.7倍と
大きいものである。これに対して実施例では静電容量の
変化率は約−５％、等価直列抵抗の変化率は約1.0倍と
ほぼ変化ないものである。Further, as can be seen from Table 2, in the conventional example, in the high-temperature load test, the rate of change of the capacitance with respect to the initial value was about-.
It is as large as 18%, and the rate of change of the equivalent series resistance is as large as about 1.7 times. On the other hand, in the embodiment, the change rate of the capacitance is about -5%, and the change rate of the equivalent series resistance is about 1.0 times, which is almost unchanged.
このように、本発明に係る封口体の使用により高温度
下で長寿命高信頼性の電解コンデンサを提供できるもの
である。Thus, by using the sealing body according to the present invention, it is possible to provide an electrolytic capacitor having a long life and high reliability under a high temperature.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山田 秀美 神奈川県藤沢市辻堂新町２丁目２番１号 エルナー株式会社内 (72)発明者 和田 幸二 福岡県春日市桜ケ丘７丁目79番地 オタ ライト株式会社内 (72)発明者 仙田 和久 神奈川県藤沢市辻堂新町４丁目３番１号 エヌオーケー株式会社内 (72)発明者 野中 豊 静岡県榛原郡相良町地頭方590―１番地 エヌオーケー株式会社内 (56)参考文献 特開 昭64−55819（ＪＰ，Ａ) 実開 昭62−134229（ＪＰ，Ｕ) 実開 昭63−152232（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) H01G 9/10 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hidemi Yamada 2-2-1 Tsujido Shinmachi, Fujisawa-shi, Kanagawa Inside Elner Co., Ltd. (72) Koji Wada 7-79 Sakuragaoka, Kasuga-shi, Fukuoka Otalight Co., Ltd. (72) Inventor Kazuhisa Senda 4-3-1 Tsujido Shinmachi, Fujisawa-shi, Kanagawa NOK Corporation (72) Inventor Yutaka Nonaka 590-1 Sagara-cho, Haibara-gun, Shizuoka Prefecture NOK Corporation ( 56) References JP-A-64-55819 (JP, A) JP-A 62-134229 (JP, U) JP-A 63-152232 (JP, U) (58) Fields investigated (Int. Cl. 6 , (DB name) H01G 9/10
Claims (3)
チルゴムとエチレン・プロピレン系共重合ゴムとの混合
物をフェノール樹脂成形板に焼き付けたことを特徴とす
る電解コンデンサの封口体。1. A sealing body for an electrolytic capacitor, characterized in that a mixture of divinylbenzene copolymerized butyl rubber and ethylene / propylene copolymerized rubber is baked on a phenolic resin molded plate as a rubber material.
チルゴムとエチレン・プロピレン系共重合ゴムと有機過
酸化物とを含有してなるゴム組成物をフェノール樹脂成
形板に焼き付けたことを特徴とする電解コンデンサの封
口体。2. An electrolytic capacitor characterized in that a rubber composition containing divinylbenzene copolymerized butyl rubber, ethylene / propylene copolymerized rubber and an organic peroxide as a rubber material is baked on a phenolic resin molded plate. Sealing body.
たことを特徴とする電解コンデンサ。3. An electrolytic capacitor using the sealing body according to claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1324565A JP2929019B2 (en) | 1989-12-14 | 1989-12-14 | Electrolytic capacitor and its sealing body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1324565A JP2929019B2 (en) | 1989-12-14 | 1989-12-14 | Electrolytic capacitor and its sealing body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03185705A JPH03185705A (en) | 1991-08-13 |
| JP2929019B2 true JP2929019B2 (en) | 1999-08-03 |
Family
ID=18167232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1324565A Expired - Fee Related JP2929019B2 (en) | 1989-12-14 | 1989-12-14 | Electrolytic capacitor and its sealing body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2929019B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW521289B (en) * | 2001-01-17 | 2003-02-21 | Matsushita Electric Industrial Co Ltd | Electronic component |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62134229U (en) * | 1986-02-18 | 1987-08-24 | ||
| JPS63152232U (en) * | 1987-03-26 | 1988-10-06 | ||
| JPS6455819A (en) * | 1987-08-27 | 1989-03-02 | Sanyo Electric Co | Rubber packing for sealing port of electrolytic capacitor |
-
1989
- 1989-12-14 JP JP1324565A patent/JP2929019B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03185705A (en) | 1991-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3070408B2 (en) | Solid electrolytic capacitor and method of manufacturing the same | |
| JPH0231489B2 (en) | ||
| JP2929019B2 (en) | Electrolytic capacitor and its sealing body | |
| JP2015050237A (en) | Electrolyte capacitor, and method for manufacturing the same | |
| JP2002373832A (en) | Method for manufacturing solid electrolytic capacitor | |
| JPH0480526B2 (en) | ||
| JP2859940B2 (en) | Method for manufacturing solid electrolytic capacitor | |
| JPH01158716A (en) | Electrolytic capacitor | |
| JP2735262B2 (en) | Solid electrolytic capacitor and method of manufacturing the same | |
| JP2886195B2 (en) | Solid electrolytic capacitors | |
| JP3594259B2 (en) | Aluminum electrolytic capacitors | |
| JP2572021B2 (en) | Electrolyte for electrolytic capacitors | |
| JPH06151258A (en) | Solid electrolytic capacitor | |
| JPH07122467A (en) | Electric double layer capacitor | |
| JP2940017B2 (en) | Method for manufacturing solid electrolytic capacitor | |
| JP6503104B2 (en) | Electrolytic capacitor and method of manufacturing the same | |
| JPS63126212A (en) | Solid electrolytic capacitor | |
| JPH0393214A (en) | Manufacture of solid-state electrolytic capacitor | |
| JPH10294241A (en) | Tab terminal for electrolytic capacitor | |
| JP2902429B2 (en) | Solid electrolytic capacitors | |
| JPH06342741A (en) | Solid electrolytic capacitor | |
| JPS6043005B2 (en) | Chemical formation method for aluminum electrodes for electrolytic capacitors | |
| JP2833774B2 (en) | Solid electrolytic capacitor and method of manufacturing the same | |
| JPH06244061A (en) | Aluminum electrolytic capacitor and tab terminal thereof | |
| JPH06132174A (en) | Manufacture of tab terminal for electrolytic capacitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |