JPH08109342A - Coating agent for electric contact surface - Google Patents
Coating agent for electric contact surfaceInfo
- Publication number
- JPH08109342A JPH08109342A JP25940594A JP25940594A JPH08109342A JP H08109342 A JPH08109342 A JP H08109342A JP 25940594 A JP25940594 A JP 25940594A JP 25940594 A JP25940594 A JP 25940594A JP H08109342 A JPH08109342 A JP H08109342A
- Authority
- JP
- Japan
- Prior art keywords
- coating agent
- oil
- surfactant
- film
- org
- 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
- 239000011248 coating agent Substances 0.000 title claims abstract description 24
- 239000004094 surface-active agent Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002199 base oil Substances 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 3
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 239000003921 oil Substances 0.000 abstract description 22
- 238000007789 sealing Methods 0.000 abstract description 15
- 150000001412 amines Chemical class 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 239000003795 chemical substances by application Substances 0.000 abstract description 4
- 230000001050 lubricating effect Effects 0.000 abstract description 3
- 239000000839 emulsion Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 10
- 238000007747 plating Methods 0.000 description 10
- 230000002265 prevention Effects 0.000 description 8
- 239000003960 organic solvent Substances 0.000 description 7
- 238000005461 lubrication Methods 0.000 description 6
- 230000002411 adverse Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 2
- 238000004945 emulsification Methods 0.000 description 2
- 229920013636 polyphenyl ether polymer Polymers 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は電気接点表面の塗布剤に
係わり、更に詳しくは電気コネクタや電気スイッチ等に
於ける電気接点表面に適用されて、それら電気接点表面
の封孔処理や潤滑又は防錆を図る為の塗布剤に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating agent on the surface of electrical contacts, and more particularly, it is applied to the surface of electrical contacts in electrical connectors, electrical switches, etc., to seal or lubricate the surfaces of these electrical contacts. It relates to a coating agent for rust prevention.
【０００２】[0002]
【従来の技術】周知の通り上記電気接点には、その使用
目的から耐食性、耐摩耗性、挿抜性等多くの制約を受け
るため、表面に金メッキ等のメッキ処理が施される。こ
の表面メッキ処理に於いてメッキ厚さを厚くすることに
より、メッキ皮膜に生ずるピンホールの数を減少させる
ことが出来るものであるが、コストアップ、ゲージトラ
ブル、バネ特性への悪影響、挿抜力の増大等により、そ
うした手段を取れない場合も多い。このようにメッキ皮
膜を薄くすると、メッキ層に多数のピンホールが生じ、
耐食性能は大幅に劣化し、生じた腐食生成物で電気接点
の接触信頼性が欠けるに至る。従って、この様な場合に
は、メッキ層に生じているピンホールを何らかの方法で
封じる必要がでてくる。即ち電気接点のメッキ皮膜の表
面に存在するピンホール（孔）を封ずる為に絶縁性の皮
膜で覆う処理としての封孔処理が必要となる。2. Description of the Related Art As is well known, the electrical contacts are subject to many restrictions such as corrosion resistance, abrasion resistance, and insertability / extractability depending on the purpose of use, and therefore their surfaces are plated with gold or the like. By increasing the plating thickness in this surface plating treatment, it is possible to reduce the number of pinholes generated in the plating film, but this increases cost, gauge trouble, adverse effects on spring characteristics, and insertion / extraction force. In many cases, such measures cannot be taken due to the increase. When the plating film is thin in this way, many pinholes are created in the plating layer,
Corrosion resistance is significantly deteriorated, and the resulting corrosion products lead to lack of contact reliability of electrical contacts. Therefore, in such a case, it is necessary to seal the pinhole generated in the plated layer by some method. That is, in order to seal the pinholes (holes) existing on the surface of the plated film of the electrical contact, a sealing process is required as a process of covering with the insulating film.
【０００３】従来の封孔処理を目的とした電気接点表面
の塗布剤は、大別してクロム酸塩、重クロム酸塩、ある
いは水酸化アルカリ金属の水溶液から電解若しくは浸漬
から得られる無機剤を用いるものと、ベースオイルに有
機アミンやメルカプタン等の界面活性剤を添加したもの
が用いられている。この有機系の塗布剤の場合、オイル
が生成分である為に、これを電気接点に塗布する場合に
はトリクロロエチレンのような有機溶剤に希釈して使用
する場合が多かった。[0003] Conventional coating agents for the surface of electrical contacts for the purpose of sealing treatment are roughly classified into those using an inorganic agent obtained by electrolysis or dipping from an aqueous solution of chromate, dichromate, or alkali metal hydroxide. In addition, a base oil to which a surfactant such as an organic amine or mercaptan is added is used. In the case of this organic coating agent, since oil is a generated component, when it is applied to electrical contacts, it is often used by diluting it with an organic solvent such as trichlorethylene.
【０００４】[0004]
【発明が解決しようとする課題】上記従来技術の内、前
者の無機系剤による無機皮膜の場合、封孔目的以外に潤
滑効果はほとんどないので挿抜を繰返す電気接点の表面
の封孔処理剤としては使用限界があった。そこで封孔目
的以外にオイル成分を有することから結果する潤滑や防
錆効果の高い後者の有機皮膜が用いられる所であるが、
この有機皮膜を形成する場合には上述したように、電気
接点への塗布時にトリクロロエチレンのような有機溶剤
に希釈して使用するので、有機溶剤の環境への悪影響が
問題視されるものであった。Among the above-mentioned conventional techniques, the former inorganic film made of an inorganic agent has almost no lubricating effect except for the purpose of sealing, so that it can be used as a sealing agent for the surface of electrical contacts that are repeatedly inserted and removed. Had a usage limit. Therefore, it is a place where the latter organic film with high lubrication and rust prevention effects resulting from having an oil component other than the purpose of sealing is used.
When forming this organic film, as described above, since it is diluted with an organic solvent such as trichlorethylene at the time of application to the electrical contacts, the adverse effect of the organic solvent on the environment has been a problem. .
【０００５】従って本発明の目的とする所は、封孔のみ
ならず潤滑、防錆効果に勝れた有機皮膜を形成できる電
気接点表面用塗布剤を提供する上で、特に有機溶剤を使
用せずに有機皮膜を電気接点のメッキ皮膜上に形成で
き、環境への悪影響のない塗布剤を提供するにある。Therefore, an object of the present invention is to provide an electric contact surface coating agent capable of forming not only sealing but also an organic film excellent in lubrication and rust prevention. The purpose of the present invention is to provide a coating agent that can form an organic film on a plating film of an electrical contact without having to adversely affect the environment.
【０００６】[0006]
【課題を解決する為の手段，作用】上記目的を達成する
為に本発明は次の技術的手段を有する。即ち本発明は、
その主成分がオイル成分と界面活性剤で構成され、且つ
上記オイル成分が上記界面活性剤によって水溶液中で乳
化されていることを特徴とする電気接点表面の塗布剤で
ある。上記の内オイルは、オレフィン系、ポリフエニー
ル エーテル系、ポロオールエステル系等特に制限され
ずに用いることができる。用途に応じて適宜採用すれば
よい。上記の内界面活性剤としては、乳化目的のもので
あれば何れをも採用できる。例えば有機アミン系、メル
カプタン系、脂肪酸系等から選ばれる。勿論この発明の
塗布剤は封孔皮膜の形成のみならず、潤滑、防錆をより
よく発揮させるものなので、上記界面活性剤は潤滑、防
錆効果の高いものが選択されるとよい。そして、オイル
と界面活性剤の組合わせ、及びオイルに対する界面活性
剤の割合も、上記オイル成分が水溶液中で乳化される限
りにおいて種々のものを選択できる。特にベースとなる
オイルの粘度如何によって潤滑能力に相違が生ずるの
で、この塗布剤が塗布される電気接点の使用状態を考慮
してそれに応じた組合わせを選択することが望ましい。In order to achieve the above object, the present invention has the following technical means. That is, the present invention
A coating agent for an electric contact surface, the main component of which is composed of an oil component and a surfactant, and the oil component is emulsified in an aqueous solution by the surfactant. The above-mentioned inner oils such as olefin type, polyphenyl ether type and polool ester type can be used without particular limitation. It may be appropriately adopted depending on the application. Any of the above-mentioned internal surfactants can be adopted as long as they are for emulsification. For example, it is selected from organic amine type, mercaptan type, fatty acid type and the like. Of course, the coating agent of the present invention not only forms the sealing film, but also exerts better lubrication and rust prevention. Therefore, it is preferable to select a surfactant having high lubrication and rust prevention effects. The combination of the oil and the surfactant and the ratio of the surfactant to the oil can be variously selected as long as the oil component is emulsified in the aqueous solution. In particular, since the lubricating ability varies depending on the viscosity of the base oil, it is desirable to select a combination according to the usage condition of the electrical contact to which this coating agent is applied.
【０００７】このような塗布剤によると、水溶液に混じ
り合わないオイルがコロイド粒子程度の大きさになって
分散し、乳化現象を呈している。即ちオイル成分（油
滴）を中心にして、界面活性剤の親油基を内側に、親水
基を外側にして水中に分散している。従って封孔処理、
潤滑処理、防錆処理を施すべき電気接点をこの塗布剤中
にそのまま浸漬して、以後乾燥させれば、電気接点のメ
ッキ皮膜のピンホール部分を含む表面に、上記界面活性
剤の親水基が吸着した状態で有機皮膜がつくられるか
ら、封孔処理が施されると共に、上記界面活性剤の潤
滑、防錆作用によって電気接点の表面が潤滑性、防錆性
を有するに至る。この有機皮膜の形成に当って、本発明
は従来の如き有機溶剤を一切使用しないものである。According to such a coating agent, the oil that is immiscible with the aqueous solution is dispersed in the size of colloidal particles, and the emulsification phenomenon is exhibited. That is, with the oil component (oil droplet) as the center, the lipophilic group of the surfactant is dispersed inside and the hydrophilic group is dispersed outside. Therefore, sealing treatment,
By immersing the electrical contact to be lubricated and rust-proofed in this coating agent as it is, and then drying it, the hydrophilic group of the above-mentioned surfactant is attached to the surface including the pinhole part of the plating film of the electrical contact. Since the organic film is formed in the adsorbed state, the sealing treatment is performed, and the surface of the electrical contact has lubricity and rust preventive property due to the lubrication and rust preventive action of the surfactant. In forming the organic film, the present invention does not use any organic solvent as in the prior art.
【０００８】[0008]
実施例１．重量部で水９５％に対しオレフィン系オイル
を５％加え、次いで少量の有機アミン界面活性剤を添加
し、攪拌した。これによりオイルの油滴が水中に分散し
乳化した。この乳化状態の塗布剤中に、電気コネクタの
ピン端子を浸漬した。浸漬時間は５秒程度であった。上
記ピン端子はニッケルメッキを中間層として、その上に
０．４μｍの金メッキ皮膜を有していた。上記浸漬後、
乾燥させた所、ピン端子表面の金メッキ皮膜上のピンホ
ールが封孔できたことが確認された。而も上記有機アミ
ンの皮膜は潤滑性、防錆性が良好であった。上記封孔処
理に当って有機溶剤は一切使用する必要がなかった。而
もこの塗布剤はベースオイルの油滴が水中に分散してい
るので即ち乳化状態にあるので長期保存に耐えた。Example 1. By weight, 5% of an olefinic oil was added to 95% of water, and then a small amount of an organic amine surfactant was added, followed by stirring. As a result, oil droplets of the oil were dispersed in water and emulsified. The pin terminals of the electrical connector were dipped in this emulsified coating agent. The immersion time was about 5 seconds. The pin terminal had nickel plating as an intermediate layer and a 0.4 μm gold plating film on the intermediate layer. After the above immersion,
When dried, it was confirmed that the pinhole on the gold-plated film on the surface of the pin terminal could be sealed. Moreover, the above organic amine film had good lubricity and rust prevention. It was not necessary to use any organic solvent in the above sealing treatment. Furthermore, this coating agent withstood long-term storage because the oil droplets of the base oil were dispersed in water, that is, because it was in an emulsified state.
【０００９】実施例２．重量部で水９５％に対し、ポリ
フェニール エーテル系オイルを５％加え攪拌した。上
記オイルはいったん水中に分散するが、しばらく放置す
ると、オイルが水から分離して水平に浮上分離した。こ
こで少量の脂肪酸系界面活性剤を加えると、油滴が水中
に分散したままの白く濁った溶液となった。即ち乳化し
た。この後電気スイッチ端子を浸漬した。浸漬時間は５
秒であった。上記スイッチ端子は０．５μｍの金メッキ
皮膜を有していた。このスイッチ端子の封孔処理前の摩
擦係数は０．２〜１．０であったが、封孔処理後は０．
１〜０．２となって安定した。而も脂肪酸系の皮膜は防
錆性が良好であった。上記封孔処理に当って有機溶剤は
一切使用しなかった。且つこの塗布剤はベースオイルの
油滴が水中に分散した状態を長期に亘って維持できた。Example 2. 5 parts by weight of polyphenyl ether type oil was added to 95% of water and stirred. The oil was once dispersed in water, but after standing for a while, the oil separated from the water and floated horizontally. When a small amount of fatty acid-based surfactant was added here, a white turbid solution was obtained in which oil droplets remained dispersed in water. That is, it was emulsified. After this, the electric switch terminals were immersed. Immersion time is 5
It was seconds. The switch terminals had a 0.5 μm gold plating film. The coefficient of friction of the switch terminal before the sealing treatment was 0.2 to 1.0, but after the sealing treatment, it was 0.
It became stable at 1 to 0.2. Moreover, the fatty acid-based film had good rust prevention. No organic solvent was used in the sealing treatment. Moreover, this coating agent was able to maintain a state in which the oil droplets of the base oil were dispersed in water for a long period of time.
【００１０】[0010]
【効果】以上詳述した如く本発明によると、電気コネク
タや電気スイッチの電気接点の表面に封孔のみならず、
潤滑、防錆効果に勝れた有機皮膜を形成する上で、有機
溶剤を一切使用する必要のない塗布剤を提供できる。従
って環境を汚染することのない電気接点表面の塗布剤を
提供できる。As described in detail above, according to the present invention, not only a sealing hole is formed on the surface of an electrical contact of an electrical connector or an electrical switch,
It is possible to provide a coating agent that does not require the use of an organic solvent at all for forming an organic film having excellent lubrication and rust prevention effects. Therefore, it is possible to provide a coating agent for the surface of the electrical contact that does not pollute the environment.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｈ０１Ｒ 13/03 Ｚ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display H01R 13/03 Z
Claims (1)
為の塗布剤に於いて；この塗布剤は、水に加えられたベ
ースオイルと、上記ベースオイルを水溶液中で分散させ
る為の界面活性剤とで構成され、この乳化状態の塗布剤
に電気接点を浸漬且つ乾燥させるだけで当該電気接点表
面に有機系皮膜を形成できる電気接点表面の塗布剤。1. A coating agent for forming an organic film on the surface of an electrical contact; the coating agent is a base oil added to water, and a surfactant for dispersing the base oil in an aqueous solution. A coating agent for the surface of an electrical contact, which can be formed into an organic film on the surface of the electrical contact only by immersing and drying the electrical contact in the coating agent in an emulsified state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25940594A JP2838371B2 (en) | 1994-09-29 | 1994-09-29 | Coating agent for electrical contact surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25940594A JP2838371B2 (en) | 1994-09-29 | 1994-09-29 | Coating agent for electrical contact surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08109342A true JPH08109342A (en) | 1996-04-30 |
| JP2838371B2 JP2838371B2 (en) | 1998-12-16 |
Family
ID=17333667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25940594A Expired - Fee Related JP2838371B2 (en) | 1994-09-29 | 1994-09-29 | Coating agent for electrical contact surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2838371B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8002595B2 (en) | 2007-01-12 | 2011-08-23 | Furukawa Electric Co., Ltd. | Electrical contact material, method of manufacturing the same, and electrical contact |
-
1994
- 1994-09-29 JP JP25940594A patent/JP2838371B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8002595B2 (en) | 2007-01-12 | 2011-08-23 | Furukawa Electric Co., Ltd. | Electrical contact material, method of manufacturing the same, and electrical contact |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2838371B2 (en) | 1998-12-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |