JPH03142819A - Sealing body for electrolytic capacitor and its manufacture - Google Patents
Sealing body for electrolytic capacitor and its manufactureInfo
- Publication number
- JPH03142819A JPH03142819A JP28093889A JP28093889A JPH03142819A JP H03142819 A JPH03142819 A JP H03142819A JP 28093889 A JP28093889 A JP 28093889A JP 28093889 A JP28093889 A JP 28093889A JP H03142819 A JPH03142819 A JP H03142819A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- fluorine
- rubber sheet
- sealing body
- carbon
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 52
- 239000003990 capacitor Substances 0.000 title claims description 55
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 239000007789 gas Substances 0.000 claims abstract description 49
- 229920001971 elastomer Polymers 0.000 claims abstract description 35
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 27
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 27
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 27
- 239000011737 fluorine Substances 0.000 claims abstract description 27
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 7
- 239000010409 thin film Substances 0.000 claims abstract description 7
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims abstract description 6
- 230000035699 permeability Effects 0.000 claims abstract description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910001882 dioxygen Inorganic materials 0.000 claims abstract description 3
- 238000003682 fluorination reaction Methods 0.000 claims abstract 2
- 229920005549 butyl rubber Polymers 0.000 claims description 11
- 239000004809 Teflon Substances 0.000 abstract description 4
- 229920006362 Teflon® Polymers 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 4
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 3
- 239000010935 stainless steel Substances 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract 1
- 238000013022 venting Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 9
- 239000000126 substance Substances 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 239000008151 electrolyte solution Substances 0.000 description 5
- 238000004381 surface treatment Methods 0.000 description 5
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 4
- 229920001342 Bakelite® Polymers 0.000 description 4
- 239000004637 bakelite Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000010408 film Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 239000012459 cleaning agent Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000003213 activating effect Effects 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
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000012812 sealant material Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
Landscapes
- Treatments Of Macromolecular Shaped Articles (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、電解コンデンサ用封口体の改良に関し、更に
詳しくは、封口体炭素系ゴムシートの表面処理により、
高いガス不透過性およびペースト不透過性並びに優れた
耐薬品性を付加した電解コンデンサ用封口体およびその
製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to improvement of a sealing body for an electrolytic capacitor, and more specifically, by surface treatment of a sealing body carbon rubber sheet,
The present invention relates to a sealing body for an electrolytic capacitor that has high gas impermeability, paste impermeability, and excellent chemical resistance, and a method for manufacturing the same.
［従来の技術］
電解コンデンサは、小形、大容量、安価で整流出力の平
滑化等に優れた特性を示し、各種電気・電子機器の重要
な構成要素の１つであるが、一般に表面を電解酸化によ
って誘電体とする酸化被膜に変えたアルミニウムフィル
ムを陽極とし、これと集電陰極とからなる素子を電解液
（ペースト）に含浸し、これを容器に封入して作製され
る。[Prior art] Electrolytic capacitors are small, large capacitors, inexpensive, and exhibit excellent characteristics such as smoothing rectified output, and are one of the important components of various electrical and electronic devices. An element consisting of an aluminum film that has been oxidized to a dielectric oxide film is used as an anode, and a collector cathode is impregnated with an electrolytic solution (paste), which is then sealed in a container.
電解コンデンサ婢、酸化被膜を再生する化学反応を行い
ながら使用するものであるため、その特性は使用する電
解液の性質に最も大きく依存する。電解コンデンサ用電
解液としては、エチレングリコールとホウ酸とからなる
電解液が一般的であるが、この種の電解液は縮合水を生
成する水系の電解液であり、酸化被膜誘電体の水和劣化
や高温使用に際しての水のガス化によるコンデンサ外観
不良の発生等の不都合を生じるため、最近では実質的に
水を含有しない非水系の電解液が次第に多く使用される
傾向にある。Since electrolytic capacitors are used while performing a chemical reaction to regenerate the oxide film, their characteristics are most dependent on the properties of the electrolyte used. The electrolytic solution for electrolytic capacitors is generally made of ethylene glycol and boric acid. Recently, non-aqueous electrolytic solutions that do not contain substantially water have been increasingly used because of problems such as deterioration and poor appearance of capacitors due to water gasification during high-temperature use.
電解液を含浸した素子を封入する容器は、一端に開口部
を有しアルミニウムのような金属材料からなるケースと
主としてベークライトを基材とする封口体とから構成さ
れる。封口体の基材としては、構造保持特性、価格等の
観点からベークライトが最も一般的に使用されている。A container that encloses an element impregnated with an electrolytic solution is composed of a case made of a metal material such as aluminum and having an opening at one end, and a sealing body mainly made of Bakelite as a base material. Bakelite is most commonly used as the base material for the sealing body from the viewpoints of structure retention properties, cost, etc.
製造に際しては電解液を含浸した素子をケースに入れた
後、封口体をケース開口部に嵌着封入して電解コンデン
サ製品が組立てられる。この嵌着を確実にするために、
ベークライト基材と開口部との間にしばしばゴムシート
等が介装される。During manufacturing, an electrolytic capacitor product is assembled by placing an element impregnated with an electrolyte into a case, and then fitting and sealing a sealing member into the opening of the case. To ensure this fit,
A rubber sheet or the like is often interposed between the Bakelite base material and the opening.
電解コンデンサの性能を向上させ用途拡大を図るために
は、前記したように非水系の電解液の積極的利用を推進
する必要があるが、この種の電解液は封口体基材である
ベークライトを溶解腐蝕する傾向が強く、電解液の改良
により特性向上を図り得たとしても、コンデンサ製品の
総合性能という観点から見た場合、封口体の劣化に起因
するライフ特性の低下等を避は得ない。In order to improve the performance of electrolytic capacitors and expand their use, it is necessary to promote the active use of non-aqueous electrolytes as described above, but this type of electrolyte does not use Bakelite, which is the base material of the sealing body. They have a strong tendency to dissolve and corrode, and even if the characteristics can be improved by improving the electrolyte, from the perspective of the overall performance of capacitor products, it is inevitable that the life characteristics will deteriorate due to the deterioration of the sealing body. .
使用し得る電解液の範囲拡大を実現する電解コンデンサ
封口体の改良はこれまでにも試みられている６例えば、
特公昭５７−
３８１８２号には、加硫済ゴムシートと、タルクなどの
フィラーを入れたフィラー入りポリプロピレン板とをポ
リプロピレンまたはポリエチレンを主成分とするポリオ
レフィン系ホットメルトフィルムを介在させて熱圧着す
ることにより接合させてなる封口板を用いたことを特徴
とする電解コンデンサが開示されている。また、同公報
第２＠第３４行〜第３澗第４行には、ブチルゴム（ＩＩ
Ｒ）は材料としては最も安定であるが、腐蝕性のある抽
出物の遊離が懸念されるため、電解コンデンサ用封口材
としての実用化はあまり進んでいないと記載されている
。このため、この技術では、目的を連敗するために次善
の材料としてエチレンプロピレンターポリマー（ＥＰＴ
）を用いて腐蝕しない封口板を得るための検討を行って
いる。Attempts have been made to improve electrolytic capacitor sealing bodies to expand the range of electrolytes that can be used.6For example,
Japanese Patent Publication No. 57-38182 discloses that a vulcanized rubber sheet and a filler-containing polypropylene plate containing a filler such as talc are bonded together by thermocompression with a polyolefin hot melt film mainly composed of polypropylene or polyethylene interposed therebetween. An electrolytic capacitor characterized in that it uses a sealing plate that is bonded by. In addition, butyl rubber (II
Although R) is the most stable material, it is stated that its practical use as a sealing material for electrolytic capacitors has not progressed much due to concerns about the release of corrosive extracts. For this reason, this technology uses ethylene propylene terpolymer (EPT) as the next best material to defeat the purpose.
) to obtain a sealing plate that does not corrode.
一方、電解コンデンサの製造工程において、素子をケー
スに入れ、て封口体により封止した後に、製造中にケー
ス等に付着したペースト等に由来する汚れを洗浄して清
浄な一外観を与えるべく、フレオンやクロロセンのよう
な洗浄剤を用いて洗浄を行う工程が不可欠であるが、こ
の場合、封口体による封止が不確実であれば、電解コン
デンサ内部に洗浄剤が侵入して製品の劣化を招く、この
ような観点からも、封口体による封止の確実性は、製品
品質に大きな影響を与える。On the other hand, in the manufacturing process of electrolytic capacitors, after the element is placed in a case and sealed with a sealing body, in order to give a clean appearance by cleaning dirt derived from paste etc. that adhered to the case etc. during manufacturing. A cleaning process using a cleaning agent such as freon or chlorocene is essential, but in this case, if the sealing material is not secure, the cleaning agent may enter the electrolytic capacitor and cause product deterioration. From this point of view, the reliability of sealing by the sealing body has a great influence on product quality.
応用範囲の広い好適な電解コンデンサ用封口体を得るた
めには、介装するゴムシートの耐有機溶剤性、耐薬品性
、嵌着性、並びにベーク板との接着性等を総合的に勘案
する必要がある。In order to obtain a suitable encapsulant for electrolytic capacitors that has a wide range of applications, the organic solvent resistance, chemical resistance, fitability, and adhesion to the baked plate of the intervening rubber sheet must be comprehensively considered. There is a need.
電解コンデンサ用封口体に用いるＩＩＲやＥＰＴのよう
なゴムシートは、素材としては前記したような性質を有
するが、好適な封口体を提供するためには、素材の面か
らではなく、電解コンデンサ用封口体に適した性質を付
加する加工処理の面に着目して、その改良を図る手段も
あると′考えられる。従来、ガス不透過性や耐薬品性の
良好なテフロンシ一ト等をゴムシートの表面に張り付け
ることにより封口体の改良を図ることが行われているが
、このような技術も、広義の加工処理に着目したものと
いえる。Rubber sheets such as IIR and EPT used for sealing bodies for electrolytic capacitors have the above-mentioned properties as materials, but in order to provide suitable sealing bodies, it is necessary to It is conceivable that there is a means to improve this by focusing on processing that adds properties suitable for the sealing body. Conventionally, sealing bodies have been improved by pasting Teflon sheets, etc., which have good gas impermeability and chemical resistance, on the surface of the rubber sheet, but this technique is also considered a processing method in a broad sense. It can be said that the focus is on processing.
ブチルゴム（ＩＩＲ）は、素材的性質の観点からは封口
体材料として最も安定であると考えられ゛るが、その素
材的性質に拘泥することなく真に有効な電解コンデンサ
用封口体を実現すべく検討を重ねた結果、ＩＩＲに代表
される炭素系ゴムシートの表面処理を行うことにより、
高いガス不透過性およびペースト不透過性並びに優れた
耐薬品性を付加した電解コンデンサ用封口体を実現し得
ることをこの度突き止めた。Butyl rubber (IIR) is considered to be the most stable sealant material from the viewpoint of material properties, but it is necessary to realize a truly effective sealant for electrolytic capacitors without being limited to its material properties. As a result of repeated studies, by surface treatment of carbon-based rubber sheets represented by IIR,
We have recently discovered that it is possible to create a sealing body for electrolytic capacitors that has high gas impermeability, paste impermeability, and excellent chemical resistance.
これにより、前記した腐蝕性のある抽出物の遊離等の問
題も同時に低減されることが期待される。This is expected to simultaneously reduce problems such as the release of corrosive extracts mentioned above.
［発明が解決しようとするＢ題］
本発明は、封口体炭素系ゴムシートの表面処理により、
高いガス不透過性およびペースト不透過性並びに優れた
耐薬品性を付加し、ガス（ペースト）抜けを低減し、耐
洗浄性を向上させ、アルミニウム電解コンデンサの長寿
命化を図る電解コンデンサ用封口体およびその製造方法
を提供することを目的とする。[Problem B to be solved by the invention] The present invention solves the problem by surface treatment of the sealing carbon rubber sheet.
A sealing body for electrolytic capacitors that has high gas impermeability, paste impermeability, and excellent chemical resistance, reduces gas (paste) leakage, improves wash resistance, and extends the life of aluminum electrolytic capacitors. The purpose is to provide a method for producing the same.
［課題を解決するための手段］
本発明によれば、炭素系ゴムシートからなる電解コンデ
ンサ用封口体であって、前記炭素系ゴムシートの片面ま
たは両面の表面に、フッ素含有ガス処理によるフッ素化
によるガスおよびペースト透過性の小さいポリフッ化炭
素の薄膜層を有することを特徴とする電解コンデンサ用
封口体が提供される。[Means for Solving the Problems] According to the present invention, there is provided a sealing body for an electrolytic capacitor made of a carbon-based rubber sheet, in which one or both surfaces of the carbon-based rubber sheet are fluorinated by treatment with a fluorine-containing gas. Provided is a sealing body for an electrolytic capacitor characterized by having a thin film layer of polyfluorocarbon having low gas and paste permeability.
更に本発明によれば、炭素系ゴムシートからなる電解コ
ンデンサ用封口体を製造するに際し、プレス成形した封
口体炭素系ゴムシートをフッ素含有ガスに曝し、片面ま
たは両面を処理することによりフッ素化してガスおよび
ペースト不透過性の高いポリフッ化炭素の薄膜層を形成
させることを特徴とする電解コンデンサ用封口体の製造
方法が提供される。Furthermore, according to the present invention, when producing a sealing body for an electrolytic capacitor made of a carbon-based rubber sheet, the press-molded sealing body carbon-based rubber sheet is exposed to a fluorine-containing gas and treated on one or both sides to be fluorinated. A method for producing a sealing body for an electrolytic capacitor is provided, which is characterized by forming a thin film layer of polyfluorocarbon having high gas and paste impermeability.
炭素系ゴムシートがＩＩＲゴムシートであれば好適であ
る。It is preferable that the carbon-based rubber sheet is an IIR rubber sheet.
フッ素含有ガスが、フッ素単体単独またはフッ素単体と
二酸化イオウガス、酸素ガス並びに窒素ガスよりなる群
から選択されるガスとを混合した混合ガスであれば好適
である。It is preferable that the fluorine-containing gas is single fluorine or a mixed gas of simple fluorine and a gas selected from the group consisting of sulfur dioxide gas, oxygen gas, and nitrogen gas.
フッ素含有ガスによる処理は、好ましくは、第１図に示
すような内側をテフロンコーティングしたステンレス製
容器内で、室温にて、全圧を０．０５〜５ ｋｒ ／
Ｃ１ｌ’とし、フッ素単体ガスの分圧をｏ、ｏｏｉ〜ｌ
ｋｒ／ｃ摺２とし、処理時間を１〜１２０分とする処理
条件にて行う。The treatment with fluorine-containing gas is preferably carried out in a stainless steel container coated with Teflon on the inside as shown in FIG. 1 at room temperature under a total pressure of 0.05 to 5 kr/.
C1l', and the partial pressure of fluorine simple gas is o, ooi~l
The processing conditions are kr/c 2 and processing time is 1 to 120 minutes.
前記した電解コンデンサ用封口体を用い、通常の製造工
程により、ペーストを含浸した素子をケースに封止して
電解コンデンサを製造することができる。An electrolytic capacitor can be manufactured by using the above-described sealing body for an electrolytic capacitor and sealing an element impregnated with a paste in a case through a normal manufacturing process.
［作用］
本発明は、電解コンデンサ用封口体に用いるＩＩＲやＥ
ＰＴのような炭素系ゴムシートの素材としての性質の面
にではなく、電解コンデンサ用封口体に適した性質を付
加する加工処理の面に着目して、その改良を図るもので
ある。[Function] The present invention is suitable for IIR and E used in sealing bodies for electrolytic capacitors.
The objective is to improve carbon-based rubber sheets such as PT by focusing not on their properties as a raw material, but on the processing that adds properties suitable for sealing bodies for electrolytic capacitors.
すなわち、炭素系ゴムシートからなる電解コンデンサ用
封口体を用い、プレス成形した封口体炭素系ゴムシート
をフッ素含有ガスに曝し、片面または両面を処理するこ
とによりガスおよびペースト不透過性の高いポリフッ化
炭素の薄膜層をゴムシートの表面上に形成させ、これに
よりガス（ペースト）透過を抑制することができる。That is, by using a sealing body for an electrolytic capacitor made of a carbon-based rubber sheet and exposing the press-molded sealing carbon-based rubber sheet to a fluorine-containing gas and treating one or both sides, polyfluoride with high gas and paste impermeability can be obtained. A thin film layer of carbon is formed on the surface of the rubber sheet, thereby suppressing gas (paste) permeation.
本発明による表面処理を行った炭素系ゴムシートを用い
ることにより、電解コンデンサ用封口体の特性が向上し
、電解コンデンサ製品においてガス（ペースト）が抜は
難くなり、また、封口体の耐薬品性が向上し、フレオン
やクロロセンのような洗浄剤がコンデンサ内部に侵入し
難くなるため、アルミニウム電解コンデンサの長寿命化
および耐洗浄性の向上を図ることができる。By using the carbon-based rubber sheet that has been surface-treated according to the present invention, the characteristics of the sealing body for electrolytic capacitors are improved, gas (paste) is difficult to remove from electrolytic capacitor products, and the chemical resistance of the sealing body is improved. This improves the resistance of the aluminum electrolytic capacitor and makes it difficult for cleaning agents such as freon and chlorocene to enter the capacitor, thereby extending the life of the aluminum electrolytic capacitor and improving its cleaning resistance.
［発明の効果］
本発明によれば、封口体炭素系ゴムシートの表面処理に
より、高いガス不透過性およびぺ一スト不透過性並びに
優れた耐薬品性を付加し、ガス（ペースト）抜けを低減
し、耐洗浄性を向上させ、アルミニウム電解コンデンサ
の長寿命化を図る電解コンデンサ用封口体およびその製
造方法が提供される。[Effects of the Invention] According to the present invention, high gas impermeability, paste impermeability, and excellent chemical resistance are added by surface treatment of the sealing carbon rubber sheet, and gas (paste) leakage is prevented. Provided are a sealing body for an electrolytic capacitor and a method for manufacturing the same, which reduce the amount of water used in the electrolytic capacitor, improve wash resistance, and extend the life of an aluminum electrolytic capacitor.
［実施例］
以下に実施例により本発明を更に詳細に説明するが、本
発明は以下の実施例にのみ限定されるものではない。[Examples] The present invention will be explained in more detail with reference to Examples below, but the present invention is not limited only to the following Examples.
並旦左立立皇
第１図に示すような内側をテフロンコーティングしたス
テンレス製容器内にＩＩＲゴムシートを載置し、室温に
て、全圧を３ｋｔ／Ｃ１１２とし、フッ素含有ガスとし
て２％Ｆ２／９８％Ｎ２ガスを用い、処理時間を２０分
とする処理条件にてフッ素含有ガスによる処理を行つた
。The IIR rubber sheet was placed in a stainless steel container whose inside was coated with Teflon as shown in Figure 1, and the total pressure was set to 3 kt/C112 at room temperature, and 2% F2 was added as a fluorine-containing gas. The treatment with a fluorine-containing gas was performed under the following conditions: /98% N2 gas and a treatment time of 20 minutes.
まず、ＩＩＲゴムシートサンプル１０を容器１２内に載
置した後、容器を密封し、全ガス調節バルブ１４を閉と
した後に、三方バルブ１６を操作して外気との連通を遮
断すると共に容器１２と真空ポンプ１８とを連通させた
。フッ素単体ガス調節バルブ２０および不活性窒素ガス
調節バルブ２２は閉とする。真空ポンプ１８を作動させ
て容器１２内を真空にした後、全ガス調節バルブ１４を
開とし、圧力計２４により圧力を監視しつつフッ素単体
ガス調節バルブ２０および不活性窒素ガス調節バルブ２
２を調節して、所定の圧力に達するまでフッ素単体ガス
および不活性窒素ガスを容器内に導入した。その後、容
器内のサンプル１０に対し、前記した所定の条件下でフ
ッ素含有ガスによる処理を行った。First, after placing the IIR rubber sheet sample 10 in the container 12, the container is sealed and all gas control valves 14 are closed. and the vacuum pump 18 were communicated. The fluorine simple gas control valve 20 and the inert nitrogen gas control valve 22 are closed. After activating the vacuum pump 18 to create a vacuum inside the container 12, all the gas control valves 14 are opened, and while monitoring the pressure with the pressure gauge 24, the fluorine simple gas control valve 20 and the inert nitrogen gas control valve 2 are opened.
2 and introduced fluorine gas and inert nitrogen gas into the container until a predetermined pressure was reached. Thereafter, the sample 10 in the container was treated with a fluorine-containing gas under the predetermined conditions described above.
前記したように作製した封口体を装着した電解コンデン
サを作製した。γ−ブチロラクトン系電解液をペースト
として使用し、常法により、サイズ６．３φ×５ｊ、定
格３５Ｖ ２２ｊＦの、を解コンデンサを作製した。An electrolytic capacitor equipped with the sealing body produced as described above was produced. Using a γ-butyrolactone electrolyte as a paste, a capacitor having a size of 6.3φ×5j and a rating of 35V and 22jF was fabricated by a conventional method.
第２図に電解コンデンサの断面図を、第３図に本発明に
よる電解コンデンサ用封口体の断面図を示す０図中、２
６は素子、２８はケース、３０は封口体、３２は表面処
理した炭素系ゴムシート、３４はベーク板、３６は端子
、３８はポリフッ化炭素層である。2 shows a sectional view of an electrolytic capacitor, and FIG. 3 shows a sectional view of a sealing body for an electrolytic capacitor according to the present invention.
6 is an element, 28 is a case, 30 is a sealing body, 32 is a surface-treated carbon rubber sheet, 34 is a baking plate, 36 is a terminal, and 38 is a polyfluorocarbon layer.
Ｌ艶班ユ
表面処理を施さないゴムシートを使用する以外は実施例
１と同様にして電解コンデンサを作製した。An electrolytic capacitor was produced in the same manner as in Example 1 except that a rubber sheet without surface treatment was used.
生監藍皇
前記したようにして製造した電解コンデンサについて、
高温（１１０℃）での長時間使用による静電容量（Ｃａ
ｐ）の変化およびペースト抜けによる重量変化（Δｗ
ｔ ）を測定した。静電容量（Ｃａｐ）の変化について
の試−験結果を第４図に、ペースト抜けによる重量変化
（Δｗ ｔ ）についての試験結果を第５図に示す。Regarding the electrolytic capacitor manufactured as described above,
Capacitance (Ca
p) and weight change due to paste omission (Δw
t) was measured. FIG. 4 shows test results regarding changes in capacitance (Cap), and FIG. 5 shows test results regarding changes in weight (Δw t ) due to paste removal.
これらの結果から、本発明による電解コンデンサ用封口
体は、電解液の成分としてγ−ブチロラクトンのような
有機溶剤を使用した場合、静電容量の変化およびペース
ト抜けによる重量変化によって代表される電解コンデン
サとしての性能が長期間維持され、長寿命化を図ること
ができることが分る。From these results, the sealing body for electrolytic capacitors according to the present invention shows that when an organic solvent such as γ-butyrolactone is used as a component of the electrolytic solution, electrolytic capacitors with a change in capacitance and a weight change due to paste removal can be reduced. It can be seen that the performance is maintained for a long period of time and that it is possible to extend the lifespan.
第１図は本発明による炭素系ゴムシートの処理装置を示
す図、第２図は電解コンデンサの断面図、第３図は本発
明による電解コンデンサ用封口体の断面図、第４図は静
電容量の変化を示す図、第５図はペースト抜けによる重
量変化を示す図である。
１０・・・ＩＩＲゴムシートサンプル
１２・・・容器 １４・・・全ガス調節バル
ブ１６・・・三方バルブ １８・・・真空ポンプ２
０・・・フッ素単体ガス調節バルブ
２２・・・不活性窒素ガス調節バルブ
２４・・・圧力計 ２６・・・素子２８・・・
ケース ３０・・・封口体３２・・・表面処理
した炭素系ゴムシー３４・・・ベーク板 ３６・
・・端子３８・・・ポリフッ化炭素層
トFig. 1 is a diagram showing a processing device for carbon-based rubber sheets according to the present invention, Fig. 2 is a cross-sectional view of an electrolytic capacitor, Fig. 3 is a cross-sectional view of a sealing body for an electrolytic capacitor according to the present invention, and Fig. 4 is a diagram showing an electrostatic FIG. 5 is a diagram showing changes in capacity, and FIG. 5 is a diagram showing changes in weight due to paste omission. 10... IIR rubber sheet sample 12... Container 14... Full gas control valve 16... Three-way valve 18... Vacuum pump 2
0...Fluorine single gas control valve 22...Inert nitrogen gas control valve 24...Pressure gauge 26...Element 28...
Case 30... Sealing body 32... Surface-treated carbon rubber seal 34... Bake plate 36.
...Terminal 38...Polyfluorocarbon layer
Claims (4)
体であって、前記炭素系ゴムシートの片面または両面の
表面に、フッ素含有ガス処理によるフッ素化によるガス
およびペースト透過性の小さいポリフッ化炭素の薄膜層
を有することを特徴とする電解コンデンサ用封口体。(1) A sealing body for an electrolytic capacitor consisting of a carbon-based rubber sheet, in which one or both surfaces of the carbon-based rubber sheet are coated with polyfluorocarbon having low gas and paste permeability due to fluorination by fluorine-containing gas treatment. A sealing body for an electrolytic capacitor characterized by having a thin film layer.
項１記載の電解コンデンサ用封口体。(2) The sealing body for an electrolytic capacitor according to claim 1, wherein the carbon-based rubber sheet is a butyl rubber sheet.
単体と二酸化イオウガス、酸素ガス並びに窒素ガスより
なる群から選択されるガスとを混合した混合ガスである
請求項１記載の電解コンデンサ用封口体。(3) The sealing body for an electrolytic capacitor according to claim 1, wherein the fluorine-containing gas is fluorine alone or a mixed gas of fluorine alone and a gas selected from the group consisting of sulfur dioxide gas, oxygen gas, and nitrogen gas.
体を製造するに際し、プレス成形した封口体炭素系ゴム
シートをフッ素含有ガスに曝し、片面または両面を処理
することによりフッ素化してガスおよびペースト不透過
性の高いポリフッ化炭素の薄膜層を形成させることを特
徴とする電解コンデンサ用封口体の製造方法。(4) When manufacturing a sealing body for an electrolytic capacitor made of a carbon-based rubber sheet, the press-molded sealing body carbon-based rubber sheet is exposed to a fluorine-containing gas, and one or both sides are treated to fluorinate it, thereby eliminating gas and paste. A method for producing a sealing body for an electrolytic capacitor, which comprises forming a thin film layer of highly permeable polyfluorocarbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28093889A JP2735646B2 (en) | 1989-10-27 | 1989-10-27 | Sealing body for electrolytic capacitor and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28093889A JP2735646B2 (en) | 1989-10-27 | 1989-10-27 | Sealing body for electrolytic capacitor and method for manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03142819A true JPH03142819A (en) | 1991-06-18 |
| JP2735646B2 JP2735646B2 (en) | 1998-04-02 |
Family
ID=17632011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28093889A Expired - Fee Related JP2735646B2 (en) | 1989-10-27 | 1989-10-27 | Sealing body for electrolytic capacitor and method for manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2735646B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003031448A (en) * | 2001-05-11 | 2003-01-31 | Daisho Kagaku Kogyo Kk | Method for producing sealing rubber for surface mount aluminum electrolytic capacitor |
-
1989
- 1989-10-27 JP JP28093889A patent/JP2735646B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003031448A (en) * | 2001-05-11 | 2003-01-31 | Daisho Kagaku Kogyo Kk | Method for producing sealing rubber for surface mount aluminum electrolytic capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2735646B2 (en) | 1998-04-02 |
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