JP4468830B2 - Electrolytic solution for driving electrolytic capacitors - Google Patents
Electrolytic solution for driving electrolytic capacitors Download PDFInfo
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- JP4468830B2 JP4468830B2 JP2005022591A JP2005022591A JP4468830B2 JP 4468830 B2 JP4468830 B2 JP 4468830B2 JP 2005022591 A JP2005022591 A JP 2005022591A JP 2005022591 A JP2005022591 A JP 2005022591A JP 4468830 B2 JP4468830 B2 JP 4468830B2
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- electrolytic
- electrolytic solution
- driving
- carboxylic acid
- propanoyl
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- 239000008151 electrolyte solution Substances 0.000 title claims description 17
- 239000003990 capacitor Substances 0.000 title claims description 14
- YRPJCLHVMRYOQF-UHFFFAOYSA-N 3-propanoyl-1,3-thiazolidine-4-carboxylic acid Chemical compound CCC(=O)N1CSCC1C(O)=O YRPJCLHVMRYOQF-UHFFFAOYSA-N 0.000 claims description 8
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 4
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 229910000679 solder Inorganic materials 0.000 description 8
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 4
- -1 tertiary amine salt Chemical class 0.000 description 4
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 2
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 2
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical class C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 description 2
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 2
- 239000005711 Benzoic acid Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 150000001734 carboxylic acid salts Chemical class 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- LIWAQLJGPBVORC-UHFFFAOYSA-N ethylmethylamine Chemical compound CCNC LIWAQLJGPBVORC-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- DAZXVJBJRMWXJP-UHFFFAOYSA-N n,n-dimethylethylamine Chemical compound CCN(C)C DAZXVJBJRMWXJP-UHFFFAOYSA-N 0.000 description 1
- GNVRJGIVDSQCOP-UHFFFAOYSA-N n-ethyl-n-methylethanamine Chemical compound CCN(C)CC GNVRJGIVDSQCOP-UHFFFAOYSA-N 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- YBRBMKDOPFTVDT-UHFFFAOYSA-N tert-butylamine Chemical compound CC(C)(C)N YBRBMKDOPFTVDT-UHFFFAOYSA-N 0.000 description 1
- CBXCPBUEXACCNR-UHFFFAOYSA-N tetraethylammonium Chemical compound CC[N+](CC)(CC)CC CBXCPBUEXACCNR-UHFFFAOYSA-N 0.000 description 1
- QEMXHQIAXOOASZ-UHFFFAOYSA-N tetramethylammonium Chemical compound C[N+](C)(C)C QEMXHQIAXOOASZ-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- SEACXNRNJAXIBM-UHFFFAOYSA-N triethyl(methyl)azanium Chemical compound CC[N+](C)(CC)CC SEACXNRNJAXIBM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
Description
本発明は、電解コンデンサの駆動用電解液(以下、単に電解液と称す)の改良に関するものであり、特にはんだフロー／リフローでの電解コンデンサの耐熱性を改善する電解液に関するものである。 The present invention relates to an improvement in an electrolytic solution for driving an electrolytic capacitor (hereinafter simply referred to as an electrolytic solution), and particularly relates to an electrolytic solution that improves the heat resistance of the electrolytic capacitor in solder flow / reflow.
従来、低圧用アルミニウム電解コンデンサは、γ−ブチロラクトンを主溶媒とし、フタル酸の３級アミン塩やイミダゾリニウム塩を主溶質とした電解液を使用していた（例えば特許文献１参照）。
近年、地球環境保全対策の一環としてはんだの鉛フリー化が進められている。鉛フリーはんだは従来の鉛入りはんだに比べ融点が高く、電解コンデンサ等の電子部品と基板とを電気的に接続するためのフロー／リフローの温度を鉛入りはんだの場合より高く設定する必要がある。
しかしながら、フロー／リフローの温度上昇に伴い、従来の電解液を用いた電解コンデンサでは、フロー／リフロー時の熱により電解液が気化し、電解コンデンサの内圧が上昇するため、外装ケースが変形するという問題があった。そのため、鉛フリーはんだの使用によるフロー／リフローの温度を高く設定した条件においても、外装ケースの変形を抑える電解液が望まれていた。
In recent years, lead-free solder has been promoted as part of global environmental conservation measures. Lead-free solder has a higher melting point than conventional lead-containing solder, and it is necessary to set the flow / reflow temperature for electrically connecting an electronic component such as an electrolytic capacitor and a substrate higher than that of lead-containing solder. .
However, as the flow / reflow temperature rises, in an electrolytic capacitor using a conventional electrolytic solution, the electrolytic solution is vaporized by heat during the flow / reflow, and the internal pressure of the electrolytic capacitor increases, so that the outer case is deformed. There was a problem. Therefore, there has been a demand for an electrolytic solution that suppresses deformation of the outer case even under conditions in which the flow / reflow temperature is set high due to the use of lead-free solder.
本発明は上記の課題を解決するもので、γ−ブチロラクトンを主成分とする溶媒に、有機カルボン酸またはその塩と、以下の化学式で示される３−プロパノイル−１，３−チアゾリジン−４−カルボン酸とを溶解したことを特徴とする電解コンデンサの駆動用電解液である。 The present invention solves the above-mentioned problems. An organic carboxylic acid or a salt thereof and 3-propanoyl-1,3-thiazolidine-4-carboxylic acid represented by the following chemical formula are used as a solvent mainly composed of γ-butyrolactone. An electrolytic solution for driving an electrolytic capacitor in which an acid is dissolved.
そして、上記の３−プロパノイル−１，３−チアゾリジン−４−カルボン酸の溶解量が、５．０〜１０．０ｗｔ％であることを特徴とする電解コンデンサの駆動用電解液である。 The electrolytic solution for driving an electrolytic capacitor is characterized in that the amount of the 3-propanoyl-1,3-thiazolidine-4-carboxylic acid dissolved is 5.0 to 10.0 wt%.
また、上記有機カルボン酸としては、アジピン酸、セバシン酸、アゼライン酸、安息香酸、フタル酸、マレイン酸等を例示することができる。 Examples of the organic carboxylic acid include adipic acid, sebacic acid, azelaic acid, benzoic acid, phthalic acid, maleic acid and the like.
そして、上記有機カルボン酸の塩としては、アンモニウム塩の他、メチルアミン、エチルアミン、ｔ−ブチルアミン等の一級アミン塩、ジメチルアミン、エチルメチルアミン、ジエチルアミン等の二級アミン塩、トリメチルアミン、ジエチルメチルアミン、エチルジメチルアミン、トリエチルアミン等の三級アミン塩、テトラメチルアンモニウム、トリエチルメチルアンモニウム、テトラエチルアンモニウム等の四級アンモニウム塩、イミダゾリニウム塩等を例示することができる。 Examples of the organic carboxylic acid salts include ammonium salts, primary amine salts such as methylamine, ethylamine, and t-butylamine, secondary amine salts such as dimethylamine, ethylmethylamine, and diethylamine, trimethylamine, and diethylmethylamine. And tertiary amine salts such as ethyldimethylamine and triethylamine, quaternary ammonium salts such as tetramethylammonium, triethylmethylammonium and tetraethylammonium, imidazolinium salts and the like.
３−プロパノイル−１，３−チアゾリジン−４−カルボン酸を、γ−ブチロラクトンを主成分とする溶媒に溶解した本発明の電解液を使用した電解コンデンサは、耐熱性が向上し、鉛フリーはんだのフロー／リフローの高温条件下においても内部圧力の上昇を抑制でき、外装ケースの変形を抑えることができる。 An electrolytic capacitor using the electrolytic solution of the present invention in which 3-propanoyl-1,3-thiazolidine-4-carboxylic acid is dissolved in a solvent mainly composed of γ-butyrolactone has improved heat resistance and is free of lead-free solder. An increase in internal pressure can be suppressed even under high-temperature flow / reflow conditions, and deformation of the outer case can be suppressed.
以下、本発明を実施例に基づき具体的に説明する。
表１の組成で調合した電解液にコンデンサ素子を含浸し、φ８×１１．５ｍｍＬ、定格５０Ｖ／１００μＦのアルミニウム電解コンデンサを各２０個作製した。
鉛フリーはんだを使用したフロー／リフローでの耐熱性を調査するため、実施例と従来例の製品各１０個を２６０℃の恒温槽中に６０秒間放置（耐熱試験）し、室温で放冷後、製品高さの変化率を調査した。
また、残りの製品各１０個を１０５℃の恒温槽中で定格電圧を印加し、２０００時間後のｔａｎδを測定し、表１の結果を得た。
Hereinafter, the present invention will be specifically described based on examples.
The electrolytic solution prepared with the composition shown in Table 1 was impregnated with a capacitor element to prepare 20 aluminum electrolytic capacitors each having a diameter of 8 × 11.5 mmL and a rating of 50V / 100 μF.
In order to investigate the heat resistance in the flow / reflow using lead-free solder, each of the 10 products of the example and the conventional example was left in a constant temperature bath at 260 ° C. for 60 seconds (heat resistance test) and allowed to cool at room temperature. , Investigated the rate of change of product height.
Moreover, the rated voltage was applied to each of the remaining 10 products in a thermostatic bath at 105 ° C., tan δ after 2000 hours was measured, and the results shown in Table 1 were obtained.
表１の結果より、３−プロパノイル−１，３−チアゾリジン−４−カルボン酸を溶解しない従来例１、２は、耐熱試験後、製品高さが８〜１０％増加した。
しかし、３−プロパノイル−１，３−チアゾリジン−４−カルボン酸を溶解した実施例１〜６は、耐熱試験後の製品高さの変化率が、従来例より改善されていることが分かる。
From the results shown in Table 1, in the conventional examples 1 and 2, which do not dissolve 3-propanoyl-1,3-thiazolidine-4-carboxylic acid, the product height increased by 8 to 10% after the heat resistance test.
However, it can be seen that in Examples 1 to 6 in which 3-propanoyl-1,3-thiazolidine-4-carboxylic acid was dissolved, the rate of change in product height after the heat resistance test was improved over the conventional example.
なお、３−プロパノイル−１，３−チアゾリジン−４−カルボン酸の溶解量は、５．０〜１０．０ｗｔ％の範囲が好ましい。
溶解量が５．０ｗｔ％未満では、耐熱試験で製品高さ増加の抑制効果が少なく、１０．０ｗｔ％を超える場合は、高温負荷試験でのｔａｎδにおいて初期値に対する２０００時間後の変化は少ないが、絶対値が高くなり、低比抵抗用途に不向きとなる。
The amount of 3-propanoyl-1,3-thiazolidine-4-carboxylic acid dissolved is preferably in the range of 5.0 to 10.0 wt%.
If the dissolution amount is less than 5.0 wt%, the effect of suppressing the increase in product height is small in the heat resistance test, and if it exceeds 10.0 wt%, the change after 2000 hours with respect to the initial value in tan δ in the high temperature load test is small. The absolute value becomes high and is not suitable for low specific resistance applications.
なお、本発明は上記実施例に限定されるものではなく、先に例示した各種溶質を単独または複数溶解した電解液や、上述した添加剤を加えた電解液、副溶媒を混合した電解液でも、上記実施例と同等の効果があった。 In addition, this invention is not limited to the said Example, The electrolyte solution which melt | dissolved various solutes illustrated previously individually or in multiple, the electrolyte solution which added the additive mentioned above, and the electrolyte solution which mixed the subsolvent are also used. There was an effect equivalent to the above example.
Claims (2)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005022591A JP4468830B2 (en) | 2005-01-31 | 2005-01-31 | Electrolytic solution for driving electrolytic capacitors |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005022591A JP4468830B2 (en) | 2005-01-31 | 2005-01-31 | Electrolytic solution for driving electrolytic capacitors |
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| Publication Number | Publication Date |
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| JP2006210753A JP2006210753A (en) | 2006-08-10 |
| JP4468830B2 true JP4468830B2 (en) | 2010-05-26 |
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| JP2005022591A Expired - Fee Related JP4468830B2 (en) | 2005-01-31 | 2005-01-31 | Electrolytic solution for driving electrolytic capacitors |
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