JPH0473603B2 - - Google Patents
Info
- Publication number
- JPH0473603B2 JPH0473603B2 JP11447984A JP11447984A JPH0473603B2 JP H0473603 B2 JPH0473603 B2 JP H0473603B2 JP 11447984 A JP11447984 A JP 11447984A JP 11447984 A JP11447984 A JP 11447984A JP H0473603 B2 JPH0473603 B2 JP H0473603B2
- Authority
- JP
- Japan
- Prior art keywords
- polypropylene film
- phenethylcumene
- dioctyl phthalate
- weight
- relationship
- 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
Links
- WOPCYTAIGVBCKZ-UHFFFAOYSA-N 1-(2-phenylethyl)-2-propan-2-ylbenzene Chemical compound CC(C)C1=CC=CC=C1CCC1=CC=CC=C1 WOPCYTAIGVBCKZ-UHFFFAOYSA-N 0.000 claims description 16
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 15
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 15
- 239000003990 capacitor Substances 0.000 claims description 12
- 239000004743 Polypropylene Substances 0.000 description 21
- 229920001155 polypropylene Polymers 0.000 description 21
- -1 polypropylene Polymers 0.000 description 20
- 239000003921 oil Substances 0.000 description 19
- 238000005470 impregnation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 3
- 230000008961 swelling Effects 0.000 description 3
- 150000004996 alkyl benzenes Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 230000002522 swelling effect Effects 0.000 description 2
- HKTCLPBBJDIBGF-UHFFFAOYSA-N 1-phenyl-2-propan-2-ylbenzene Chemical compound CC(C)C1=CC=CC=C1C1=CC=CC=C1 HKTCLPBBJDIBGF-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Organic Insulating Materials (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、コンデンサとくに金属化ポリプロピ
レンフイルムコンデンサに関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to capacitors, particularly metallized polypropylene film capacitors.
（従来例の構成とその問題点）
金属化ポリプロピレンフイルムコンデンサの特
徴は誘電体として絶縁耐圧のすぐれたポリプロピ
レンフイルムを用い、又金属膜が極めて薄く、自
己回復特性を有する両面金属化紙を用いているた
め、高電位傾度の絶縁設計ができる点にある。第
６図は金属化ポリプロピレンフイルムコンデンサ
の構成例を示すもので、１は電極となる両面金属
化紙、２は誘電体となるポリプロピレンフイルム
であり、３は、両面金属化紙１とポリプロピレン
フイルム２を積層し、巻回した後、その両端面に
施されたリード線（図示せず）引出用メタリコ
ン、４は含浸用絶縁油である。従来、この含浸用
絶縁油としてアルキルベンゼン系のものが使用さ
れており、この絶縁油は、両面金属化紙１とポリ
プロピレンフイルム２との巻回体において両面金
属化紙表面の凹凸によつて生ずる空〓に沿つて容
易に含浸されるため、含浸性が極めて良好であ
る。しかしポリプロピレンフイルムは絶縁油を浸
漬したとき膨潤が大きく、ポリプロピレンフイル
ムと金属化紙の電極間の油層の厚みが薄くなり、
油の含浸性が悪くなる。又含浸性は絶縁油の粘度
に関係し、粘度が高い程含浸性が悪くなる。この
現象はポリプロピレンフイルムに対する膨潤性の
大きい油、又粘度の高い油程影響が大きい。この
ことがコンデンサのコロナ放電開始電圧の著しい
低下の原因となつている。(Conventional structure and its problems) The characteristics of metallized polypropylene film capacitors are that a polypropylene film with excellent dielectric strength is used as the dielectric, and the metal film is extremely thin and double-sided metallized paper with self-healing properties is used. This makes it possible to design insulation with a high potential gradient. FIG. 6 shows an example of the structure of a metallized polypropylene film capacitor, in which 1 is double-sided metalized paper serving as an electrode, 2 is a polypropylene film serving as a dielectric, and 3 is double-sided metalized paper 1 and polypropylene film 2. After being laminated and wound, metallcones for drawing out lead wires (not shown) are applied to both end surfaces thereof, and reference numeral 4 is insulating oil for impregnation. Conventionally, an alkylbenzene-based insulating oil has been used as the insulating oil for impregnation, and this insulating oil is used to fill the voids caused by unevenness on the surface of the double-sided metallized paper in the rolled body of the double-sided metalized paper 1 and the polypropylene film 2. Since it is easily impregnated along the 〓, the impregnating property is extremely good. However, polypropylene film swells significantly when immersed in insulating oil, and the thickness of the oil layer between the polypropylene film and the metallized paper electrode becomes thinner.
Oil impregnation becomes poor. Also, the impregnation property is related to the viscosity of the insulating oil, and the higher the viscosity, the worse the impregnation property is. This phenomenon has a greater influence on the polypropylene film as the oil has greater swelling properties and oils that have higher viscosity. This causes a significant decrease in the corona discharge starting voltage of the capacitor.
（発明の目的）
本発明は上記従来例の問題点を解決し、コンデ
ンサのコロナ開始電圧、寿命特性の改善を図るこ
とを目的とする。(Objective of the Invention) An object of the present invention is to solve the problems of the above-mentioned conventional methods and to improve the corona start voltage and life characteristics of the capacitor.
（発明の構成）
本発明によるコンデンサは両面金属化紙からな
る電極とポリプロピレンの誘電体とを積層して巻
回された素子の両面にメタリコンを施した素子に
フタル酸ジオクチル90〜50重量％とフエネチルク
メン10〜50重量％混入してなる混合絶縁油を含浸
したことを特徴とし、ポリプロピレンフイルムの
膨潤性を改善し、両面金属化紙とポリプロピレン
フイルムとの間の適正な油層の厚みを確保すると
共に油の粘度、即ち含浸性を改善するものであ
る。これによりコンデンサのコロナ開始電圧、寿
命特性の改善を図ることが可能になつた。なお、
上記フエネチルクメンの化学構造式は次のとおり
である。(Structure of the Invention) The capacitor according to the present invention has an element in which an electrode made of double-sided metallized paper and a polypropylene dielectric are laminated and wound, and metallicon is applied on both sides of the element. It is characterized by being impregnated with a mixed insulating oil containing 10 to 50% by weight of phenethylcumene, which improves the swelling properties of the polypropylene film and ensures an appropriate thickness of the oil layer between the double-sided metallized paper and the polypropylene film. It improves the viscosity of oil, that is, its impregnating properties. This has made it possible to improve the capacitor's corona onset voltage and life characteristics. In addition,
The chemical structural formula of the above phenethylcumene is as follows.
（実施例の説明） 本発明の実施例を下記に示す。 (Description of Examples) Examples of the present invention are shown below.
第１図に金属化ポリプロピレンフイルムコンデ
ンサに於いて、周囲温度20℃、印加電圧110v／
μ、印加時間24時間経過後のコロナ開始電圧とフ
タル酸ジオクチルに対するフエネチルクメン重量
％の関係を示す。第１図によりフタル酸ジオクチ
ルに対するフエネチルクメン重量％が０〜10、50
〜100の範囲ではコロナ開始電圧の低下が著しい。 Figure 1 shows a metallized polypropylene film capacitor at an ambient temperature of 20℃ and an applied voltage of 110V/
μ shows the relationship between the corona onset voltage after 24 hours of application time and the weight percent of phenethylcumene relative to dioctyl phthalate. According to Figure 1, the weight percent of phenethylcumene relative to dioctyl phthalate is 0 to 10, 50.
In the range of ~100, the corona initiation voltage decreases significantly.
第２図にフタル酸ジオクチルに対するフエネチ
ルクメン重量％と22μｍポリプロピレンフイルム
の厚み方向の膨潤率の関係を示す。第３図にフタ
ル酸ジオクチルに対するフエネチルクメン重量％
と粘度の関係を示す。第１図および第２図に示す
ように、フタル酸ジオクチルに対するフエネチル
クメン重量％が50〜100ではポリプロピレンフイ
ルムの膨潤率が大きくなりポリピロピレンフイル
ムと金属化紙の電極の油層の厚みが薄くなり、油
の含浸性が悪くなり、コロナ開始電圧が著しく低
下している。又第１図および第３図に示すように
フタル酸ジオクチルに対するフエネチルクメン重
量％が０〜10では油の粘度が高くなつて、含浸性
が悪くなりコロナ開始電圧が著しく低下してい
る。 FIG. 2 shows the relationship between the weight percent of phenethylcumene relative to dioctyl phthalate and the swelling ratio in the thickness direction of a 22 μm polypropylene film. Figure 3 shows the weight percentage of phenethylcumene relative to dioctyl phthalate.
shows the relationship between viscosity and viscosity. As shown in FIGS. 1 and 2, when the weight percent of phenethylcumene relative to dioctyl phthalate is 50 to 100, the swelling ratio of the polypropylene film becomes large and the thickness of the oil layer between the polypropylene film and the metallized paper electrode becomes thin. Oil impregnation has deteriorated and the corona starting voltage has decreased significantly. Further, as shown in FIGS. 1 and 3, when the weight percent of phenethylcumene relative to dioctyl phthalate is 0 to 10, the viscosity of the oil increases, impregnating properties deteriorate, and the corona initiation voltage decreases significantly.
第４図に試料Ａ（従来品、32μF、アルキルベン
ゼン）、試料Ｂ（32μF、フタル酸ジオクチル100重
量％フエネチルクメン０重量％）、試料Ｃ（32μF、
フタル酸ジオクチル95重量％フエネチルクメン５
重量％、混合絶縁油）、試料Ｄ（32μF、フタル酸
ジオクチル70重量％、フエニチルクメン30重量
％、混合絶縁油）、試験条件、−30℃ ８時間放
置、100℃ 78v／μ 16時間電圧印加、のヒー
トサイクル通電の寿命試験の５サイクル後のコロ
ナ放電発生数（500pc以上）と電圧の関係を示
す。第５図に、そのときの残存率とヒートサイク
ルの関係を示す。第４図および第５図に示すよう
にフタル酸ジオクチルにフエネチルクメンを混入
することにより、寿命特性が著しく向上すること
がわかる。 Figure 4 shows sample A (conventional product, 32μF, alkylbenzene), sample B (32μF, 100% by weight dioctyl phthalate, 0% by weight phenethylcumene), and sample C (32μF,
Dioctyl phthalate 95% by weight phenethylcumene 5
Sample D (32μF, 70% by weight of dioctyl phthalate, 30% by weight of phenylcumene, mixed insulating oil), Test conditions: -30℃ left for 8 hours, 100℃ 78V/μ 16 hours voltage applied, The relationship between the number of corona discharges (500 pc or more) and voltage after 5 cycles of the heat cycle energization life test is shown. FIG. 5 shows the relationship between the residual rate and the heat cycle at that time. As shown in FIGS. 4 and 5, it can be seen that the life characteristics are significantly improved by mixing phenethylcumene into dioctyl phthalate.
（発明の効果）
以上から明らかなように、本発明は金属化ポリ
プロピレンフイルムコンデンサにフタル酸ジオク
チル90〜50重量％、フエネチルクメン10〜50重量
％を混入した混合絶縁油を含浸することによりコ
ンデンサのコロナ特性、寿命特性を著しく改善す
るものであり、産業上大きな効果が得られるもの
である。(Effects of the Invention) As is clear from the above, the present invention impregnates a metallized polypropylene film capacitor with a mixed insulating oil containing 90 to 50% by weight of dioctyl phthalate and 10 to 50% by weight of phenethylcumene. The characteristics and life characteristics are significantly improved, and a great industrial effect can be obtained.
第１図はコロナ開始電圧−フタル酸ジオクチル
に対するフエネチルクメン重量％の関係を示す図
である。第２図はポリプロピレンフイルム膨潤率
−フタル酸ジオクチルに対するフエネチルクメン
重量％の関係を示す図である。第３図は粘度−フ
タル酸ジオクチルに対するフエネチルクメン重量
％の関係を示す図である。第４図はコロナ放電発
生数−電圧の関係を示す図である。第５図は残存
率−ヒートサイクルの関係を示す図である。第６
図は金属化ポリプロピレンフイルムコンデンサの
構成を示す要部断面図である。
１……両面金属化紙、２……ポリプロピレンフ
イルム、３……メタリコン、４……絶縁油。
FIG. 1 is a diagram showing the relationship between corona onset voltage and weight percent of phenethylcumene relative to dioctyl phthalate. FIG. 2 is a diagram showing the relationship between the swelling ratio of polypropylene film and the weight percent of phenethylcumene relative to dioctyl phthalate. FIG. 3 is a diagram showing the relationship between viscosity and weight percent of phenethylcumene relative to dioctyl phthalate. FIG. 4 is a diagram showing the relationship between the number of corona discharges occurring and the voltage. FIG. 5 is a diagram showing the relationship between survival rate and heat cycle. 6th
The figure is a sectional view of essential parts showing the structure of a metallized polypropylene film capacitor. 1...Double-sided metallized paper, 2...Polypropylene film, 3...Metallicon, 4...Insulating oil.
Claims (1)
フイルムとを積層して巻回された素子の両面にメ
タリコンを施した素子にフタル酸ジオクチル90〜
50重量％とフエネチルクメン10〜50重量％混入し
てなる混合絶縁油を含浸したことを特徴とするコ
ンデンサ。1 Dioctyl phthalate 90 ~
A capacitor characterized by being impregnated with a mixed insulating oil containing 50% by weight and 10 to 50% by weight of phenethylcumene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11447984A JPS60258912A (en) | 1984-06-06 | 1984-06-06 | Condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11447984A JPS60258912A (en) | 1984-06-06 | 1984-06-06 | Condenser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60258912A JPS60258912A (en) | 1985-12-20 |
| JPH0473603B2 true JPH0473603B2 (en) | 1992-11-24 |
Family
ID=14638768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11447984A Granted JPS60258912A (en) | 1984-06-06 | 1984-06-06 | Condenser |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60258912A (en) |
-
1984
- 1984-06-06 JP JP11447984A patent/JPS60258912A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60258912A (en) | 1985-12-20 |
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