JP2000216067A - Aluminum electrolyte capacitor - Google Patents
Aluminum electrolyte capacitorInfo
- Publication number
- JP2000216067A JP2000216067A JP11018386A JP1838699A JP2000216067A JP 2000216067 A JP2000216067 A JP 2000216067A JP 11018386 A JP11018386 A JP 11018386A JP 1838699 A JP1838699 A JP 1838699A JP 2000216067 A JP2000216067 A JP 2000216067A
- Authority
- JP
- Japan
- Prior art keywords
- sealing plate
- aluminum
- electrolytic capacitor
- polyamideimide resin
- solution
- 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
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 43
- 239000003990 capacitor Substances 0.000 title claims abstract description 40
- 239000003792 electrolyte Substances 0.000 title abstract description 15
- 239000011347 resin Substances 0.000 claims abstract description 33
- 229920005989 resin Polymers 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 239000004962 Polyamide-imide Substances 0.000 claims abstract description 27
- 229920002312 polyamide-imide Polymers 0.000 claims abstract description 27
- 229920001971 elastomer Polymers 0.000 claims abstract description 23
- 239000008151 electrolyte solution Substances 0.000 claims description 8
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 4
- 238000013035 low temperature curing Methods 0.000 claims description 4
- 239000004952 Polyamide Substances 0.000 claims 1
- 150000003949 imides Chemical class 0.000 claims 1
- 229920002647 polyamide Polymers 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 14
- 229920005549 butyl rubber Polymers 0.000 abstract description 6
- 239000007787 solid Substances 0.000 abstract description 6
- 239000002798 polar solvent Substances 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 239000005011 phenolic resin Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000004580 weight loss Effects 0.000 description 3
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- DBOFPRDNHUMHGD-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;2-methylbuta-1,3-diene;2-methylprop-1-ene Chemical compound CC(C)=C.CC(=C)C=C.C=CC1=CC=CC=C1C=C DBOFPRDNHUMHGD-UHFFFAOYSA-N 0.000 description 1
- WZCQRUWWHSTZEM-UHFFFAOYSA-N 1,3-phenylenediamine Chemical compound NC1=CC=CC(N)=C1 WZCQRUWWHSTZEM-UHFFFAOYSA-N 0.000 description 1
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 1
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical compound CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 description 1
- YBRVSVVVWCFQMG-UHFFFAOYSA-N 4,4'-diaminodiphenylmethane Chemical compound C1=CC(N)=CC=C1CC1=CC=C(N)C=C1 YBRVSVVVWCFQMG-UHFFFAOYSA-N 0.000 description 1
- HLBLWEWZXPIGSM-UHFFFAOYSA-N 4-Aminophenyl ether Chemical compound C1=CC(N)=CC=C1OC1=CC=C(N)C=C1 HLBLWEWZXPIGSM-UHFFFAOYSA-N 0.000 description 1
- KMKWGXGSGPYISJ-UHFFFAOYSA-N 4-[4-[2-[4-(4-aminophenoxy)phenyl]propan-2-yl]phenoxy]aniline Chemical compound C=1C=C(OC=2C=CC(N)=CC=2)C=CC=1C(C)(C)C(C=C1)=CC=C1OC1=CC=C(N)C=C1 KMKWGXGSGPYISJ-UHFFFAOYSA-N 0.000 description 1
- UTDAGHZGKXPRQI-UHFFFAOYSA-N 4-[4-[4-(4-aminophenoxy)phenyl]sulfonylphenoxy]aniline Chemical compound C1=CC(N)=CC=C1OC1=CC=C(S(=O)(=O)C=2C=CC(OC=3C=CC(N)=CC=3)=CC=2)C=C1 UTDAGHZGKXPRQI-UHFFFAOYSA-N 0.000 description 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- -1 diamine compounds Chemical class 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 description 1
- 239000004312 hexamethylene tetramine Substances 0.000 description 1
- 235000010299 hexamethylene tetramine Nutrition 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 229940018564 m-phenylenediamine Drugs 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- SRPWOOOHEPICQU-UHFFFAOYSA-N trimellitic anhydride Chemical compound OC(=O)C1=CC=C2C(=O)OC(=O)C2=C1 SRPWOOOHEPICQU-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/08—Housing; Encapsulation
- H01G9/10—Sealing, e.g. of lead-in wires
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
- H01G9/045—Electrodes or formation of dielectric layers thereon characterised by the material based on aluminium
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Paints Or Removers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、アルミ電解コンデ
ンサに関する。更に詳しくは、ゴム製封口板の表面部分
を樹脂被覆してなるアルミ電解コンデンサに関する。[0001] The present invention relates to an aluminum electrolytic capacitor. More specifically, the present invention relates to an aluminum electrolytic capacitor obtained by coating a surface portion of a rubber sealing plate with a resin.
【０００２】[0002]
【従来の技術】従来のアルミ電解コンデンサは、これを
高温条件下に長時間使用すると、内部電解液がゴム製封
口板を透過して減量し、コンデンサとしての性能を低下
させるという問題がみられた。その対策としては、封口
板ゴムの材料を改良することによって電解液透過性を低
減させたものやゴム材料をより耐熱性にすぐれたものと
するなどの提案がなされているが、耐熱性にすぐれしか
も長期間にわたって電解液透過性を少くするような封口
板を、ゴム材料だけで対応することは非常に困難であ
る。2. Description of the Related Art A conventional aluminum electrolytic capacitor has a problem that, when used for a long time under a high temperature condition, the internal electrolytic solution permeates through a rubber sealing plate to reduce its weight, thereby deteriorating the performance as a capacitor. Was. As a countermeasure, proposals have been made to improve the sealing plate rubber material to reduce the electrolyte permeability and to make the rubber material more heat-resistant. Moreover, it is very difficult to deal with a sealing plate that reduces the electrolyte permeability over a long period of time using only a rubber material.
【０００３】アルミ電解コンデンサ用封口板ブチルゴム
の表面処理を行ない、プリプレグシートとしてのフェノ
ール樹脂積層板との接着性を向上させたゴム・樹脂積層
板を封口板として採用したものなども提案されているが
(特開平7-130586号公報)、これは樹脂・ゴム複合材料の
ため、封口板直径が10mm以下の小型コンデンサへの適用
は困難である。[0003] A sealing plate for aluminum electrolytic capacitors which has been subjected to a surface treatment of butyl rubber to improve the adhesiveness with a phenol resin laminate as a prepreg sheet and employs a rubber / resin laminate as a sealing plate has been proposed. But
(Japanese Unexamined Patent Publication No. Hei 7-130586), which is a resin-rubber composite material, is difficult to apply to a small capacitor having a sealing plate diameter of 10 mm or less.
【０００４】また、アルミ電解コンデンサの外壁部を構
成するアルミ表面に、絶縁性確保のために塩化ビニル樹
脂フィルムをラミネートすることも行われているが、昨
今は塩ビ材料の環境汚染性を考え、それの採用を見合せ
たいという要望も高まっている。In addition, a vinyl chloride resin film has been laminated on an aluminum surface constituting an outer wall portion of an aluminum electrolytic capacitor in order to secure insulation. However, recently, considering environmental pollution of a PVC material, There is also a growing demand to stop adopting it.
【０００５】[0005]
【発明が解決しようとする課題】本発明の目的は、電解
液と共に収納されたコンデンサ素子のリード線を挿通し
てアルミケースの上部を塞ぐようにゴム製封口板を装着
させたアルミ電解コンデンサにおいて、ゴム製封口板の
表面部分を樹脂で被覆することによって、電解質透過性
を抑制し、その耐久性を向上せしめたものを提供するこ
とにある。SUMMARY OF THE INVENTION An object of the present invention is to provide an aluminum electrolytic capacitor in which a rubber sealing plate is mounted so as to cover the upper part of an aluminum case by inserting a lead wire of a capacitor element housed together with an electrolytic solution. Another object of the present invention is to provide a rubber sealing plate whose surface is coated with a resin to suppress electrolyte permeability and improve durability.
【０００６】[0006]
【課題を解決するための手段】かかる本発明の目的は、
ゴム製封口板の表面部分をポリアミドイミド樹脂によっ
て被覆することによって達成され、被覆は必要に応じて
この部分を含めたアルミケース外壁部の一部または全体
について行なうこともできる。SUMMARY OF THE INVENTION The object of the present invention is as follows.
This is achieved by coating the surface portion of the rubber sealing plate with a polyamideimide resin, and the coating can be performed on a part or the whole of the outer wall of the aluminum case including this portion, if necessary.
【０００７】[0007]
【発明の実施の形態】アルミ電解コンデンサは、広口ビ
ン状のアルミケースの内部に電解液およびコンデンサ素
子を収納しており、アルミケースの上部を塞ぐように、
コンデンサ素子のリード線を挿通させたゴム製封口板が
装着されている。BEST MODE FOR CARRYING OUT THE INVENTION An aluminum electrolytic capacitor contains an electrolytic solution and a capacitor element inside a wide-bottle-shaped aluminum case, and closes the upper part of the aluminum case.
A rubber sealing plate into which the lead wires of the capacitor element are inserted is mounted.
【０００８】ゴム製封口板としては、電解液バリアー性
にすぐれたブチルゴム製のものが一般に用いられてお
り、この他にもジビニルベンゼン共重合ブチルゴムとEP
DMとのブレンドゴム(特開平3-181536号公報)やイソブチ
レン-イソプレン-ジビニルベンゼン3元共重合体とEPDM
とのブレンドゴム(同2-235951号公報)等の変性ブチルゴ
ム-EPDMブレンドゴム等も用いられる。As the rubber sealing plate, those made of butyl rubber having an excellent electrolyte barrier property are generally used. In addition, divinylbenzene copolymerized butyl rubber and EP are used.
EPDM with blend rubber with DM (JP-A-3-81536) or isobutylene-isoprene-divinylbenzene terpolymer
A modified butyl rubber-EPDM blend rubber such as a blend rubber with the same (JP-A-2-235951) can also be used.
【０００９】かかるブチル系ゴム製封口板の表面部分
は、ポリアミドイミド樹脂、好ましくは低温硬化型ポリ
アミドイミド樹脂によって被覆される。ポリアミドイミ
ド樹脂は、無水トリメリット酸(モノクロライド)および
ジアミン化合物、例えばm-フェニレンジアミン、p-フェ
ニレンジアミン、4,4′-ジアミノジフェニルエーテル、
4,4′-ジアミノジフェニルメタン、ビス[4-(4-アミノフ
ェノキシ)フェニル]スルホン、2,2-ビス[4-(4-アミノフ
ェノキシ)フェニル]プロパン等を用い、酸クロライド
法、イソシアネート法または直接重合法によって製造さ
れる。得られたポリアミドイミドは、ジメチルアセトア
ミドやN-メチル-2-ピロリドン等の非プロトン性極性溶
媒に可溶性である。The surface of the butyl rubber sealing plate is coated with a polyamideimide resin, preferably a low-temperature curing type polyamideimide resin. Polyamide imide resins include trimellitic anhydride (monochloride) and diamine compounds such as m-phenylenediamine, p-phenylenediamine, 4,4'-diaminodiphenyl ether,
Using 4,4'-diaminodiphenylmethane, bis [4- (4-aminophenoxy) phenyl] sulfone, 2,2-bis [4- (4-aminophenoxy) phenyl] propane or the like, acid chloride method, isocyanate method or It is produced by a direct polymerization method. The obtained polyamideimide is soluble in aprotic polar solvents such as dimethylacetamide and N-methyl-2-pyrrolidone.
【００１０】本発明においては、アルミ電解コンデンサ
の耐熱性を考慮して、その硬化温度が約120〜200℃の低
温硬化型ポリアミドイミド樹脂が好んで用いられ、実際
には市販品、例えば日立化成製品HPC-4250-30、HPC-428
0-25等が用いられる。In the present invention, in consideration of the heat resistance of the aluminum electrolytic capacitor, a low-temperature curing type polyamide-imide resin having a curing temperature of about 120 to 200 ° C. is preferably used. Products HPC-4250-30, HPC-428
0-25 or the like is used.
【００１１】これらのポリアミドイミド樹脂は、固型分
濃度が約5〜35重量%、好ましくは約10〜30重量%の上記
非プロトン性極性溶媒溶液として用いられ、この溶液の
ゴム製封口板の表面部分またはその部分を含むアルミケ
ース外壁部の一部または全体への塗布は、浸せき法、噴
霧法等の一般に用いられている方法によって行われる。These polyamide-imide resins are used as the above-mentioned aprotic polar solvent solution having a solid content of about 5 to 35% by weight, preferably about 10 to 30% by weight. The application to a part or the whole of the surface portion or the outer wall portion of the aluminum case including the surface portion is performed by a generally used method such as a dipping method and a spraying method.
【００１２】塗布された溶液は、約120〜200℃、好まし
くは約120〜150℃のオーブン中などで約0.5〜3時間程度
加熱処理され、それの適用個所に平均膜厚約1〜500μ
m、好ましくは約5〜150μmのポリアミドイミド樹脂被膜
を形成させる。平均膜厚は、用いられる溶液中の固型分
濃度を調整することによって制御することができる。The applied solution is heat-treated in an oven at about 120 to 200 ° C., preferably about 120 to 150 ° C. for about 0.5 to 3 hours.
m, preferably about 5 to 150 μm, of a polyamideimide resin coating. The average film thickness can be controlled by adjusting the solid component concentration in the solution used.
【００１３】[0013]
【発明の効果】アルミ電解コンデンサのゴム製封口板の
表面部分に、ポリアミドイミド樹脂、好ましくは低温硬
化型ポリアミドイミド樹脂の被膜を形成させることによ
り、電解液透過性を防止させ、コンデンサの耐熱寿命を
向上させることができる。同時に、ゴム製封口板の表面
部分以外のコンデンサアルミケースの一部または全体に
同様の被膜を形成させた場合には、従来の如く塩化ビニ
ル樹脂被膜を形成させることなく、絶縁性を確保するこ
とができる。According to the present invention, a film of a polyamide imide resin, preferably a low-temperature curing type polyamide imide resin, is formed on the surface of the rubber sealing plate of an aluminum electrolytic capacitor, thereby preventing the electrolyte from permeating and allowing the capacitor to withstand heat. Can be improved. At the same time, if a similar coating is formed on part or all of the capacitor aluminum case other than the surface part of the rubber sealing plate, ensure insulation without forming a vinyl chloride resin coating as in the past. Can be.
【００１４】[0014]
【実施例】次に、実施例について本発明を説明する。Next, the present invention will be described with reference to examples.
【００１５】実施例１ ブチルゴム製封口板をアルミケースの上部を塞ぐように
封着させ、そこにコンデンサ素子のリード線を挿通させ
たアルミ電解コンデンサにおいて、アルミ電解コンデン
サ(直径6.3mm、高さ16mm)全体をポリアミドイミド樹脂
溶液(日立化成製品HPC-4250-30；固形分濃度30重量%のN
-メチル-2-ピロリドン溶液)中に浸漬して引き上げた
後、予め140℃に加熱したオーブン中で60分間加熱処理
し、平均膜厚120μmのポリアミドイミド樹脂被膜を封口
板表面部分を含むアルミケース外壁全体に形成させた。EXAMPLE 1 A butyl rubber sealing plate was sealed so as to cover the upper part of an aluminum case, and a lead wire of a capacitor element was inserted through the sealing plate. An aluminum electrolytic capacitor (diameter 6.3 mm, height 16 mm) was used. ) The whole is polyamide-imide resin solution (Hitachi Chemical HPC-4250-30; solid content concentration 30% by weight N
-Methyl-2-pyrrolidone solution) and then raised, heat-treated in an oven preheated to 140 ° C for 60 minutes, and an aluminum case containing a polyamideimide resin coating with an average film thickness of 120 μm including the surface of the sealing plate. The entire outer wall was formed.
【００１６】アルミ電解コンデンサの寿命を示す代用特
性として、高温環境下に放置する方法によって、アルミ
電解コンデンサ中に収納された電解液の重量減少量を測
定すると、未処理アルミ電解コンデンサの電解液減量が
140℃、1000時間で31mgであるのに対し21mgと32%の低減
効果が得られた。As a substitute characteristic indicating the life of the aluminum electrolytic capacitor, the weight loss of the electrolytic solution stored in the aluminum electrolytic capacitor is measured by a method of being left in a high temperature environment. But
At 140 ° C. for 1000 hours, the reduction effect was 21 mg and 32%, compared to 31 mg.
【００１７】実施例２ 実施例１において、ポリアミドイミド樹脂溶液を更にN-
メチル-2-ピロリドンで希釈し、固形分濃度20重量%の溶
液として用い、平均膜厚80μmのポリアミドイミド樹脂
被膜を形成させた。電解液減量を測定すると、32%の低
減化効果が得られた。Example 2 In Example 1, the polyamideimide resin solution was further added with N-
It was diluted with methyl-2-pyrrolidone and used as a solution having a solid content of 20% by weight to form a polyamideimide resin film having an average film thickness of 80 μm. When the electrolyte loss was measured, a 32% reduction effect was obtained.
【００１８】実施例３ 実施例１において、ポリアミドイミド樹脂溶液を更にN-
メチル-2-ピロリドンで希釈し、固形分濃度10重量%の溶
液として用い、平均膜厚40μmのポリアミドイミド樹脂
被膜を形成させた。電解液減量を測定すると、32%の低
減化効果が得られた。Example 3 In Example 1, the polyamideimide resin solution was further added with N-
The solution was diluted with methyl-2-pyrrolidone and used as a solution having a solid content of 10% by weight to form a polyamideimide resin film having an average film thickness of 40 μm. When the electrolyte loss was measured, a 32% reduction effect was obtained.
【００１９】実施例４ 実施例１において、直径8mm、高さ16mmのアルミ電解コ
ンデンサが用いられ、平均膜厚120μmのポリアミドイミ
ド樹脂被膜を形成させた。電解液減量を測定すると、29
%の低減化効果が得られた。Example 4 In Example 1, an aluminum electrolytic capacitor having a diameter of 8 mm and a height of 16 mm was used, and a polyamideimide resin film having an average film thickness of 120 μm was formed. When measuring the electrolyte loss, 29
% Reduction effect was obtained.
【００２０】実施例５ 実施例２において、直径8mm、高さ16mmのアルミ電解コ
ンデンサが用いられ、平均膜厚80μmのポリアミドイミ
ド樹脂被膜を形成させた。電解液減量を測定すると、26
%の低減化効果が得られた。Example 5 In Example 2, an aluminum electrolytic capacitor having a diameter of 8 mm and a height of 16 mm was used, and a polyamideimide resin film having an average film thickness of 80 μm was formed. When measuring electrolyte loss, 26
% Reduction effect was obtained.
【００２１】実施例６ 実施例３において、直径8mm、高さ16mmのアルミ電解コ
ンデンサが用いられ、平均膜厚40μmのポリアミドイミ
ド樹脂被膜を形成させた。電解液減量を測定すると、22
%の低減化効果が得られた。Example 6 In Example 3, an aluminum electrolytic capacitor having a diameter of 8 mm and a height of 16 mm was used, and a polyamideimide resin film having an average film thickness of 40 μm was formed. When measuring electrolyte loss, 22
% Reduction effect was obtained.
【００２２】比較例１ 実施例１において、ポリアミドイミド樹脂溶液の代り
に、ノボラック型フェノール樹脂(大日本インキ化学製
品；ノボラック型フェノールホルムアルデヒド重縮合物
とヘキサメチレンテトラミンとの混合物)のメタノール
溶液(固形分濃度20重量%)を用い、平均膜厚30μmのノボ
ラック型フェノール樹脂被膜を形成させた。電解液減量
を測定すると、6%の低減化効果しか得られなかった。Comparative Example 1 In Example 1, a novolak-type phenol resin (Dainippon Ink Chemical; a mixture of a novolak-type phenol formaldehyde polycondensate and hexamethylenetetramine) in methanol was used instead of the polyamideimide resin solution. (A concentration of 20% by weight), and a novolak-type phenol resin film having an average film thickness of 30 μm was formed. When the electrolyte loss was measured, only a 6% reduction effect was obtained.
【００２３】比較例２ 比較例１において、直径8mm、高さ16mmのアルミ電解コ
ンデンサを用い、平均膜厚30μmのノボラック型フェノ
ール樹脂被膜を形成させた。電解液減量を測定すると、
3%の低減化効果しか得られなかった。Comparative Example 2 In Comparative Example 1, a novolak-type phenol resin film having an average thickness of 30 μm was formed using an aluminum electrolytic capacitor having a diameter of 8 mm and a height of 16 mm. When measuring electrolyte loss,
Only a 3% reduction effect was obtained.
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１２年４月３日（２０００．４．３）[Submission date] April 3, 2000 (200.4.3)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Correction target item name] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【特許請求の範囲】[Claims]
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００５[Correction target item name] 0005
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００５】[0005]
【発明が解決しようとする課題】本発明の目的は、電解
液と共に収納されたコンデンサ素子のリード線を挿通し
てアルミケースの上部を塞ぐようにゴム製封口板を装着
させたアルミ電解コンデンサにおいて、ゴム製封口板の
表面部分を樹脂で被覆することによって、電解液透過性
を抑制し、その耐久性を向上せしめたものを提供するこ
とにある。SUMMARY OF THE INVENTION An object of the present invention is to provide an aluminum electrolytic capacitor in which a rubber sealing plate is mounted so as to cover the upper part of an aluminum case by inserting a lead wire of a capacitor element housed together with an electrolytic solution. Another object of the present invention is to provide a rubber sealing plate in which the surface portion is covered with a resin so as to suppress the electrolyte permeability and improve the durability thereof.
【手続補正３】[Procedure amendment 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１６[Correction target item name] 0016
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１６】 アルミ電解コンデンサの寿命を示す代表
特性として、高温環境下に放置する方法によって、アル
ミ電解コンデンサ中に収納された電解液の重量減少量を
測定すると、未処理アルミ電解コンデンサの電解液減量
が140℃、1000時間で31mgであるのに対し21mgと32%の低
減効果が得られた。 Representative of the life of an aluminum electrolytic capacitor
As a characteristic , when the weight loss of the electrolytic solution stored in the aluminum electrolytic capacitor is measured by a method of leaving it in a high temperature environment, the electrolytic solution weight loss of the untreated aluminum electrolytic capacitor is 31 mg at 140 ° C and 1000 hours. In comparison, a reduction effect of 21 mg and 32% was obtained.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 安藤 理 神奈川県藤沢市辻堂新町４−３−１ エヌ オーケー株式会社内 (72)発明者 林 実彦 東京都八王子市横山町22―１ 関東エヌオ ーケー販売株式会社内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Osamu Ando 4-3-1 Tsujido Shinmachi, Fujisawa-shi, Kanagawa NOK Co., Ltd. (72) Inventor Hayashi Minami 22-1 Yokoyamacho, Hachioji-shi, Tokyo Kanto NOK Sales Inside the corporation
Claims (3)
のリード線を挿通してアルミケースの上部を塞ぐように
ゴム製封口板を装着させたアルミ電解コンデンサにおい
て、ゴム製封口板の表面部分をポリアミドイミド樹脂で
被覆してなるアルミ電解コンデンサ1. An aluminum electrolytic capacitor in which a rubber sealing plate is mounted so as to close the upper part of an aluminum case by inserting a lead wire of a capacitor element housed together with an electrolytic solution, wherein a surface portion of the rubber sealing plate is made of polyamide. Aluminum electrolytic capacitor coated with imide resin
の一部または全体をポリアミドイミド樹脂で被覆した請
求項１記載のアルミ電解コンデンサ2. The aluminum electrolytic capacitor according to claim 1, wherein a part or the whole of the outer wall of the aluminum case including the sealing plate is coated with a polyamideimide resin.
られた請求項１または２記載のアルミ電解コンデンサ3. The aluminum electrolytic capacitor according to claim 1, wherein a low temperature curing type polyamideimide resin is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01838699A JP3855518B2 (en) | 1999-01-27 | 1999-01-27 | Aluminum electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01838699A JP3855518B2 (en) | 1999-01-27 | 1999-01-27 | Aluminum electrolytic capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000216067A true JP2000216067A (en) | 2000-08-04 |
| JP3855518B2 JP3855518B2 (en) | 2006-12-13 |
Family
ID=11970288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01838699A Expired - Fee Related JP3855518B2 (en) | 1999-01-27 | 1999-01-27 | Aluminum electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3855518B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008235896A (en) * | 2007-03-20 | 2008-10-02 | Avx Corp | Cathode coating for wet electrolytic capacitor |
| EP3154072A1 (en) * | 2012-04-27 | 2017-04-12 | Elna Co., Ltd. | Aluminum electrolytic capacitor and rubber seal for same |
-
1999
- 1999-01-27 JP JP01838699A patent/JP3855518B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008235896A (en) * | 2007-03-20 | 2008-10-02 | Avx Corp | Cathode coating for wet electrolytic capacitor |
| EP3154072A1 (en) * | 2012-04-27 | 2017-04-12 | Elna Co., Ltd. | Aluminum electrolytic capacitor and rubber seal for same |
| EP3157023A1 (en) * | 2012-04-27 | 2017-04-19 | Elna Co., Ltd. | Rubber seal for aluminum electrolytic capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3855518B2 (en) | 2006-12-13 |
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