JPS63318120A - Metallized plastic film capacitor - Google Patents
Metallized plastic film capacitorInfo
- Publication number
- JPS63318120A JPS63318120A JP15370687A JP15370687A JPS63318120A JP S63318120 A JPS63318120 A JP S63318120A JP 15370687 A JP15370687 A JP 15370687A JP 15370687 A JP15370687 A JP 15370687A JP S63318120 A JPS63318120 A JP S63318120A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- metal
- plastic film
- film capacitor
- zinc
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 14
- 239000002985 plastic film Substances 0.000 title claims abstract description 5
- 229920006255 plastic film Polymers 0.000 title claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 13
- 239000011701 zinc Substances 0.000 claims abstract description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 7
- 239000000956 alloy Substances 0.000 claims abstract description 4
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 4
- 150000002739 metals Chemical class 0.000 claims abstract description 4
- 229910052793 cadmium Inorganic materials 0.000 claims abstract 2
- 229910052804 chromium Inorganic materials 0.000 claims abstract 2
- 229910052802 copper Inorganic materials 0.000 claims abstract 2
- 229910052742 iron Inorganic materials 0.000 claims abstract 2
- 229910052748 manganese Inorganic materials 0.000 claims abstract 2
- 229910052759 nickel Inorganic materials 0.000 claims abstract 2
- 229910052709 silver Inorganic materials 0.000 claims abstract 2
- 229910052718 tin Inorganic materials 0.000 claims abstract 2
- 229910052721 tungsten Inorganic materials 0.000 claims abstract 2
- 238000001465 metallisation Methods 0.000 claims 1
- 230000006866 deterioration Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract 2
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 241001655798 Taku Species 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は電気機器に利用されるコンデンサに関するもの
である。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a capacitor used in electrical equipment.
従来の技術
ポリプロピレン、ポリエチレンテレフタレート等の２軸
延伸プイルム上にアルミニウム蒸着電極、又は亜鉛蒸着
電極、又はアルミニウムと亜鉛からなる蒸着電極（日本
特許出願公開公報特開昭６４−１２７６５７号公報、特
開昭６４−１３１７６２号公報、特開昭５３−８５３６
６号公報参照）を設けた乾式タイプのコンデンサが知ら
れている。Prior Art An aluminum vapor-deposited electrode, a zinc-deposited electrode, or a vapor-deposited electrode consisting of aluminum and zinc (Japanese Patent Application Publication No. 1983-127657, Japanese Patent Application Laid-open No. 127657/1983, Japanese Patent Application Publication No. 127657/1989, Japanese Patent Application Publication No. 127657/1983, Japanese Patent Application Publication No. 64-127657, Japanese Patent Application Publication No. 127657/1983) Publication No. 64-131762, JP-A-53-8536
A dry type capacitor equipped with a capacitor (see Publication No. 6) is known.
発明が解決しようとする問題点
従来のコンデンサにおいては、高温（８０℃）、５０Ｖ
／μｍ以上の高電位傾度にて使用すると蒸着電極膜に小
円形の絶縁皮膜部が発現し、高温連続耐用試験での静電
容量の減少率の増大の原因と成っている。このため、従
来のコンデンサにおいては更に高い電位傾度設計は困難
となり、コンデンサの小形化、コストダウンに大きな支
障を与えている。Problems to be solved by the invention In conventional capacitors, high temperature (80°C), 50V
When used at a high potential gradient of /μm or more, small circular insulation film portions appear on the deposited electrode film, which is the cause of an increase in the rate of capacitance decrease in continuous high temperature durability tests. For this reason, it is difficult to design a higher potential gradient in conventional capacitors, which poses a major hindrance to miniaturization and cost reduction of capacitors.
本発明は上記コンデンサに於ける高温、高電位傾度での
小円形絶縁部発現の問題点を克服しようとするものであ
る。The present invention seeks to overcome the problem of the development of small circular insulation portions in the capacitors at high temperatures and high potential gradients.
問題点を解決するための手段
本発明は上記問題点について、その発現条件およびその
防止対策技術を種々実験研究の結果、酸化物の比抵抗が
１ＧΩ・ｃｍより低く、かつイオン化傾向が亜鉛より小
さい金属の単体、又は上記金属の内の一つ以上を含む合
金を、金属化プラスチックフィルムコンデンサの蒸着電
極の材料として用いるものである。Means for Solving the Problems The present invention solves the above problems by conducting various experimental studies on the conditions under which they occur and techniques for preventing them.The present invention has found that the specific resistance of the oxide is lower than 1 GΩ・cm and the ionization tendency is lower than that of zinc. An elemental metal or an alloy containing one or more of the metals mentioned above is used as a material for the vapor-deposited electrode of the metallized plastic film capacitor.
作用
上記構成によれば、高温、高電位傾度での連続耐用試験
における小円形の絶縁皮膜部の発現が抑制出来ることを
確認した。Effect: According to the above configuration, it was confirmed that the appearance of small circular insulation film portions in continuous durability tests at high temperatures and high potential gradients could be suppressed.
小円形の絶縁皮膜部の発現は誘電体フィルム中の絶縁欠
陥部を通じて流れる微少電流が主要因であり、酸化物の
比抵抗が３×１０１５Ω・αと極めて大きいアルミニウ
ムを電極とした場合には誘電体フィルム中の絶縁欠陥部
を通じて流れる微少電流は小円形の絶縁皮膜部と電極の
境界部に集中し継続的に劣化が進むのに対し、酸化物の
比抵抗が低い金属材料を電極とした場合には電極と酸化
部との境界部への電流の集中は減少し劣化の進行が妨げ
られている。更に、上記金属材料の酸化の進行には誘電
体フィルム中に含まれている、或は外部から浸入する微
量の水分が関与しているが、イオン化傾向が亜鉛より小
さい金属を選定することにより水分との反応が抑制され
、電極と酸化部との境界部への電流の集中の減少と相ま
って劣化の進行は大幅に抑えられているものと推定され
る。The main reason for the formation of small circular insulation film parts is the minute current flowing through insulation defects in the dielectric film. The minute current that flows through insulation defects in the body film concentrates at the boundary between the small circular insulation film and the electrode, causing continuous deterioration, whereas when the electrode is made of a metal material with a low oxide resistivity. In this case, the concentration of current at the boundary between the electrode and the oxidized portion is reduced, and the progress of deterioration is prevented. Furthermore, trace amounts of moisture contained in the dielectric film or infiltrating from the outside are involved in the progress of oxidation of the metal materials, but by selecting a metal with a smaller ionization tendency than zinc, moisture can be reduced. It is presumed that this suppresses the reaction between the electrode and the oxidized portion, and in combination with the reduction in the concentration of current at the boundary between the electrode and the oxidized portion, the progress of deterioration is significantly suppressed.
実施例 次表に本発明の一実施例およびその特性を示す。Example The following table shows an embodiment of the present invention and its characteristics.
（以下余白）
なお厚み６．４μｍの誘電体フィルム上に金属を蒸着し
て電極を形成し、定格２０μＦ・２５０Ｖのコンデンサ
を同条件で作成した。このコンデンサに１６３倍の交流
電圧を印加して雰囲気温度８０℃で連続耐用試験全行い
、１０００時間後の容量減少率を測定した結果、酸化物
の比抵抗が１ＧΩ・鐸より低く、かつイオン化傾向が亜
鉛より小さい金属の単体、又は上記金属の内の一つ以上
を含む合金′ｌｔ電極として用いたものは、この値が極
めて低く、上記条件を満足しないＡ／またはＺｎを電極
として用いたものは５チ以上の値を示すことが判明した
。また、同時に容量減少率の犬なるものほど５．小円形
の絶縁部が電極膜中により多く発現していることも併せ
て確認した。(The following is a blank space) An electrode was formed by vapor depositing metal on a dielectric film having a thickness of 6.4 μm, and a capacitor with a rating of 20 μF and 250 V was created under the same conditions. We applied 163 times the AC voltage to this capacitor and conducted a continuous durability test at an ambient temperature of 80°C, and measured the capacity reduction rate after 1000 hours. As a result, we found that the specific resistance of the oxide was lower than 1GΩ・taku, and that it had a tendency to ionize. A single metal with a smaller value than zinc, or an alloy containing one or more of the above metals, has an extremely low value and does not satisfy the above conditions.Those using A/ or Zn as an electrode was found to have a value of 5 chi or more. At the same time, the capacity reduction rate is 5. It was also confirmed that more small circular insulating parts appeared in the electrode film.
発明の効果
以上の様に本発明によれば、小円形絶縁部発現による電
極の劣化を抑制する効果が顕著であり、その産業性は大
なるものである。Effects of the Invention As described above, the present invention has a remarkable effect of suppressing deterioration of the electrode due to the formation of small circular insulating parts, and its industrial efficiency is great.
Claims (2)
オン化傾向が亜鉛より小さい金属の単体、又は上記金属
の内の一つ以上を含む合金を電極として用いたことを特
徴とする金属化プラスチックフィルムコンデンサ。(1) Metalization characterized by using as an electrode a single metal whose oxide resistivity is lower than 1 GΩ·cm and whose ionization tendency is lower than that of zinc, or an alloy containing one or more of the above metals. plastic film capacitor.
Ｗ、Ｔｉ、Ｐｂ、Ｍｎ、Ｆｅ、Ｓｎの何れかである特許
請求の範囲第１項記載の金属化プラスチックフィルムコ
ンデンサ。(2) The metal is Ni, Cr, Co, Cd, Cu, Ag,
The metallized plastic film capacitor according to claim 1, which is any one of W, Ti, Pb, Mn, Fe, and Sn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15370687A JPS63318120A (en) | 1987-06-19 | 1987-06-19 | Metallized plastic film capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15370687A JPS63318120A (en) | 1987-06-19 | 1987-06-19 | Metallized plastic film capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63318120A true JPS63318120A (en) | 1988-12-27 |
Family
ID=15568324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15370687A Pending JPS63318120A (en) | 1987-06-19 | 1987-06-19 | Metallized plastic film capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63318120A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934221A (en) * | 2015-06-25 | 2015-09-23 | 浙江七星电容器有限公司 | Wear-resistant double-sided metal electrical membrane of capacitor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5396466A (en) * | 1977-01-28 | 1978-08-23 | Siemens Ag | Selffhealing capacitor and method of making same |
| JPS5544820A (en) * | 1978-09-25 | 1980-03-29 | Mitsubishi Paper Mills Ltd | Evaporated film |
| JPS601823A (en) * | 1983-06-17 | 1985-01-08 | 松下電器産業株式会社 | Plastic film capacitor |
-
1987
- 1987-06-19 JP JP15370687A patent/JPS63318120A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5396466A (en) * | 1977-01-28 | 1978-08-23 | Siemens Ag | Selffhealing capacitor and method of making same |
| JPS5544820A (en) * | 1978-09-25 | 1980-03-29 | Mitsubishi Paper Mills Ltd | Evaporated film |
| JPS601823A (en) * | 1983-06-17 | 1985-01-08 | 松下電器産業株式会社 | Plastic film capacitor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934221A (en) * | 2015-06-25 | 2015-09-23 | 浙江七星电容器有限公司 | Wear-resistant double-sided metal electrical membrane of capacitor |
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