JPH033371B2 - - Google Patents
Info
- Publication number
- JPH033371B2 JPH033371B2 JP60222363A JP22236385A JPH033371B2 JP H033371 B2 JPH033371 B2 JP H033371B2 JP 60222363 A JP60222363 A JP 60222363A JP 22236385 A JP22236385 A JP 22236385A JP H033371 B2 JPH033371 B2 JP H033371B2
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- aluminum foil
- liquid
- chemical
- temperature
- 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
- 239000007788 liquid Substances 0.000 claims description 31
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 25
- 229910052782 aluminium Inorganic materials 0.000 claims description 25
- 239000011888 foil Substances 0.000 claims description 25
- 239000000126 substance Substances 0.000 claims description 23
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 239000003990 capacitor Substances 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 9
- 239000001257 hydrogen Substances 0.000 description 9
- 239000007864 aqueous solution Substances 0.000 description 8
- 230000007423 decrease Effects 0.000 description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- FLDCSPABIQBYKP-UHFFFAOYSA-N 5-chloro-1,2-dimethylbenzimidazole Chemical compound ClC1=CC=C2N(C)C(C)=NC2=C1 FLDCSPABIQBYKP-UHFFFAOYSA-N 0.000 description 3
- 239000001741 Ammonium adipate Substances 0.000 description 3
- 235000019293 ammonium adipate Nutrition 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000004254 Ammonium phosphate Substances 0.000 description 2
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 2
- 235000019289 ammonium phosphates Nutrition 0.000 description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 2
- 235000011130 ammonium sulphate Nutrition 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
【発明の詳細な説明】
［発明の技術分野］
この発明は給電電極を配した給電槽でアルミ箔
に給電する電解コンデンサ用アルミ箔の化成方法
に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method of chemically forming aluminum foil for an electrolytic capacitor, which supplies power to the aluminum foil in a power supply tank provided with a power supply electrode.
［発明の技術的背景とその問題点］
従来エツチングしたアルミ箔に化成皮膜を生成
させる化成装置の給電方法は銅などのコンタクト
ローラに接触させて走行させるアルミ箔に、前記
コンタクトローラに供給した電流を給電していた
が、コンタクト部のスパークや低電流しか給電で
きないなどの問題があつた。このため第４図に示
したように給電電極１を配した給電槽２を設け、
給電電極１から給電液３を介してアルミ箔４に給
電する液中給電方式が用いられている。なお５は
化成槽、６は化成液、７は化成電極、８は電源で
ある。[Technical background of the invention and its problems] Conventionally, the power supply method of a chemical conversion device that generates a chemical conversion film on etched aluminum foil is to run the aluminum foil in contact with a contact roller made of copper or the like, and to feed the current supplied to the contact roller. However, there were problems such as sparks at the contacts and only a low current could be supplied. For this purpose, a power supply tank 2 in which a power supply electrode 1 is arranged is provided as shown in FIG.
A submerged power supply system is used in which power is supplied from the power supply electrode 1 to the aluminum foil 4 via the power supply liquid 3. Note that 5 is a chemical conversion tank, 6 is a chemical liquid, 7 is a chemical conversion electrode, and 8 is a power source.
しかしながら液中給電方式で化成した場合に
は、給電槽２においてアルミ箔４には陰極が課電
されるので、逆電圧が印加された状態となりアル
ミ箔４表面に発生した水素を吸収し、水素脆性を
生じるため、アルミ箔４の強度が弱くなつたり、
容量が低下するなどの問題があつた。 However, when chemical formation is performed using the submerged power supply method, the cathode is applied to the aluminum foil 4 in the power supply tank 2, so a reverse voltage is applied and the hydrogen generated on the surface of the aluminum foil 4 is absorbed. Due to brittleness, the strength of the aluminum foil 4 may be weakened,
There were problems such as a decrease in capacity.
［発明の目的］
この発明は液中給電方式を使用した場合でも容
量低下の小さい電解コンデンサ用アルミ箔の化成
方法を提供することを目的としたものである。[Object of the Invention] The object of the present invention is to provide a method for forming aluminum foil for an electrolytic capacitor, which causes a small decrease in capacity even when a submerged power supply system is used.
［発明の概要］
この発明になる電解コンデンサ用アルミ箔の化
成方法は電源の陽極に接続した給電電極と給電液
を有する給電槽の前記給電電極間を走行させてア
ルミ箔に化成皮膜を生成させる電解コンデンサ用
アルミ箔の化成方法において、前記給電液の温度
を40℃以下の室温に維持することを特徴とするも
のである。[Summary of the Invention] The method for chemically converting aluminum foil for electrolytic capacitors according to the present invention involves creating a chemical conversion film on the aluminum foil by running the aluminum foil between the power supply electrode connected to the anode of a power source and the power supply electrode of a power supply tank having a power supply liquid. The method for chemically forming aluminum foil for electrolytic capacitors is characterized in that the temperature of the power supply liquid is maintained at room temperature of 40° C. or lower.
［発明の実施例］
第４図に示した化成装置において、たとえば給
電液３を５重量％アジピン酸アンモニウム水溶
液、硫酸アンモニウム水溶液、またはリン酸アン
モニウム水溶液とし、化成液６を５重量％アジピ
ン酸アンモニウム水溶液を用い140V化成を行な
つたときの給電液温度と静電容量との関係を第１
図に示す。なお、給電液３に硫酸アンモニウム水
溶液、リン酸アンモニウム水溶液、アジピン酸ア
ンモニウム水溶液で化成液６濃度と異なる濃度の
水溶液または化成液６と異なる組成の給電液を使
用した場合はアルミ箔４が化成液６に入る前にシ
ヤワーなどの水洗によつて給電液３を洗浄するこ
とが望ましい。このことは給電液３に化成液６と
異なる組成の水溶液を使用した場合には化成液６
中に給電液３を持ち込んで化成液６特性を変化さ
せないようにするためである。この結果から明ら
かなように給電液３温度が40℃を越えると静電容
量は急激に低下することが示されている。[Embodiments of the Invention] In the chemical conversion apparatus shown in FIG. 4, for example, the power supply liquid 3 is a 5% by weight ammonium adipate aqueous solution, an ammonium sulfate aqueous solution, or an ammonium phosphate aqueous solution, and the chemical conversion liquid 6 is a 5% by weight ammonium adipate aqueous solution. The relationship between the power supply liquid temperature and capacitance when performing 140V conversion using
As shown in the figure. Note that if the power supply liquid 3 is ammonium sulfate aqueous solution, ammonium phosphate aqueous solution, or ammonium adipate aqueous solution, which has a concentration different from that of the chemical liquid 6, or a power supply liquid whose composition is different from the chemical liquid 6, the aluminum foil 4 will be replaced by the chemical liquid 6. It is desirable to wash the power supply liquid 3 by washing with water using a shower or the like before entering the room. This means that if an aqueous solution with a different composition from the chemical liquid 6 is used as the power supply liquid 3, the chemical liquid 6
This is to prevent the power supply liquid 3 from being brought inside and changing the characteristics of the chemical liquid 6. As is clear from these results, it is shown that when the temperature of the power supply liquid 3 exceeds 40° C., the capacitance decreases rapidly.
また、第２図には前記と同じ条件で給電したと
きの給電液３温度と、給電槽２を出た後のアルミ
箔４の重量増加との関係を示したものである。こ
の第２図からは給電液３温度が40℃を超えると、
やはり重量増加が激しく、前記第１図の静電容量
の低下と正反対の傾向を示しているが、静電容量
の低下は水素を吸収して生ずる重量増加と密接な
関連があり、給電液温度が40℃を超え高くなる程
水素の吸収が激しく、該水素の吸収によつて静電
容量は急激に低下するものである。さらに第３図
に給電液温度とアルミ箔の折曲強度との関係を示
す。すなわちアルミ箔（厚さ0.09mm）を前記実施
例と同じ条件で給電し、給電槽２から出た後のア
ルミ箔を10mm幅に裁断して試料とし、該試料に
500ｇの錘を下げ、まず45゜傾けたのち垂直に戻
し、次いで反対側に45゜傾けたのち垂直に戻し、
これを１回として計数した結果を示したものであ
る。この結果も給電液温度40℃を超えると急激な
低下を示している。 Further, FIG. 2 shows the relationship between the temperature of the power supply liquid 3 and the weight increase of the aluminum foil 4 after leaving the power supply tank 2 when power is supplied under the same conditions as described above. From this figure 2, when the power supply liquid 3 temperature exceeds 40℃,
As expected, the weight increase is significant, showing the opposite trend to the decrease in capacitance shown in Figure 1 above, but the decrease in capacitance is closely related to the increase in weight caused by absorption of hydrogen, and the temperature of the power supply fluid increases. The higher the temperature exceeds 40°C, the more hydrogen is absorbed, and the capacitance decreases rapidly due to the absorption of hydrogen. Furthermore, FIG. 3 shows the relationship between the temperature of the power supply liquid and the bending strength of the aluminum foil. That is, aluminum foil (thickness 0.09 mm) was fed with electricity under the same conditions as in the above example, and the aluminum foil after coming out of the power supply tank 2 was cut into a 10 mm width as a sample.
Lower a 500g weight, first tilt it 45 degrees, then return it vertically, then tilt it 45 degrees to the other side, then return it vertically.
This figure shows the result of counting this as one time. This result also shows a rapid decrease when the power supply liquid temperature exceeds 40°C.
以上述べたように、この発明によれば、静電容
量、重量増加（水素吸収）、折曲強度とも給電液
の温度が40℃を超えると、特性劣化を生じること
が明示されており、その原因はアルミ箔の水素吸
収によるものであり、この水素吸収によつて生ず
る水素脆性によつて機械的強度は急激な低下を示
している。よつて、本発明は給電電極を配した給
電槽でアルミ箔に給電する液中給電方式を使用す
る化成方法においては、給電液温度を40℃以下の
室温にすることにより静電容量、折曲強度を向上
させることができる。 As described above, according to the present invention, it is clearly stated that the characteristics of capacitance, weight increase (hydrogen absorption), and bending strength deteriorate when the temperature of the power supply liquid exceeds 40°C. The cause is hydrogen absorption in the aluminum foil, and the mechanical strength shows a rapid decline due to hydrogen embrittlement caused by this hydrogen absorption. Therefore, in a chemical formation method using a submerged power supply method in which power is supplied to aluminum foil in a power supply tank equipped with a power supply electrode, the capacitance and bending can be reduced by keeping the temperature of the power supply liquid at room temperature below 40°C. Strength can be improved.
［発明の効果］
この発明によれば、液中給電方式において給電
液温度を40℃以下の室温にすることにより、アル
ミ箔の水素吸収を小さくし、よつて静電容量、折
曲強度を向上できる効果を有する。[Effects of the Invention] According to the present invention, by keeping the temperature of the power supply liquid at room temperature below 40°C in the submerged power supply system, hydrogen absorption in the aluminum foil is reduced, thereby improving capacitance and bending strength. It has the effect of
第１図〜第３図は本発明になる化成方法におけ
る給電液温度と諸特性の関係を示すもので第１図
は静電容量を示す曲線図、第２図は重量増加を示
す曲線図、第３図は折曲強度を示す曲線図、第４
図は液中給電方式の化成装置を示す断面図であ
る。
１……給電電極、２……給電槽、３……給電
液、４……アルミ箔、５……化成槽、６……化成
液、７……化成電極、８……電源。
Figures 1 to 3 show the relationship between the temperature of the power supply liquid and various characteristics in the chemical conversion method of the present invention. Figure 1 is a curve diagram showing capacitance, Figure 2 is a curve diagram showing weight increase, Figure 3 is a curve diagram showing bending strength, Figure 4
The figure is a sectional view showing a chemical conversion apparatus using a submerged power supply system. 1...Power supply electrode, 2...Power supply tank, 3...Power supply liquid, 4...Aluminum foil, 5...Chemical tank, 6...Chemical liquid, 7...Chemical electrode, 8...Power source.
Claims (1)
する給電槽の前記給電電極間を走行させてアルミ
箔に化成皮膜を生成させる電解コンデンサ用アル
ミ箔の化成方法において、前記給電液の温度を40
℃以下の室温に維持することを特徴とする電解コ
ンデンサ用アルミ箔の化成方法。1. In a chemical conversion method for aluminum foil for an electrolytic capacitor in which a chemical conversion film is generated on the aluminum foil by running between a power supply electrode connected to an anode of a power supply and the power supply electrode of a power supply tank having a power supply liquid, the temperature of the power supply liquid is set to 40°C.
A method for forming aluminum foil for electrolytic capacitors, which is maintained at room temperature below ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60222363A JPS6281708A (en) | 1985-10-04 | 1985-10-04 | Compounding method for aluminum foil for electrolytic condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60222363A JPS6281708A (en) | 1985-10-04 | 1985-10-04 | Compounding method for aluminum foil for electrolytic condenser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6281708A JPS6281708A (en) | 1987-04-15 |
| JPH033371B2 true JPH033371B2 (en) | 1991-01-18 |
Family
ID=16781169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60222363A Granted JPS6281708A (en) | 1985-10-04 | 1985-10-04 | Compounding method for aluminum foil for electrolytic condenser |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6281708A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110016703B (en) * | 2019-05-14 | 2020-12-11 | 四川立业电子有限公司 | Production process of formed foil feed liquid and high-pressure formed foil |
-
1985
- 1985-10-04 JP JP60222363A patent/JPS6281708A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6281708A (en) | 1987-04-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |