JPH0418703A - Resistance paste for slid resistor - Google Patents
Resistance paste for slid resistorInfo
- Publication number
- JPH0418703A JPH0418703A JP12173190A JP12173190A JPH0418703A JP H0418703 A JPH0418703 A JP H0418703A JP 12173190 A JP12173190 A JP 12173190A JP 12173190 A JP12173190 A JP 12173190A JP H0418703 A JPH0418703 A JP H0418703A
- Authority
- JP
- Japan
- Prior art keywords
- parts
- fiber
- metal
- ceramic
- conductive material
- 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.)
- Pending
Links
- 239000000835 fiber Substances 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 claims abstract description 23
- 239000000919 ceramic Substances 0.000 claims abstract description 17
- 239000003365 glass fiber Substances 0.000 claims abstract description 16
- 239000011347 resin Substances 0.000 claims abstract description 11
- 229920005989 resin Polymers 0.000 claims abstract description 11
- 239000000126 substance Substances 0.000 claims abstract description 11
- 239000011230 binding agent Substances 0.000 claims abstract description 9
- 239000004020 conductor Substances 0.000 claims abstract description 8
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 5
- 238000007747 plating Methods 0.000 claims abstract description 3
- 239000002241 glass-ceramic Substances 0.000 claims description 5
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 abstract description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 11
- 239000006229 carbon black Substances 0.000 abstract description 11
- 229910002804 graphite Inorganic materials 0.000 abstract description 11
- 239000010439 graphite Substances 0.000 abstract description 11
- 239000005011 phenolic resin Substances 0.000 abstract description 11
- 229920000049 Carbon (fiber) Polymers 0.000 abstract description 9
- 239000004917 carbon fiber Substances 0.000 abstract description 9
- 239000000203 mixture Substances 0.000 abstract description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 5
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 abstract description 3
- 229920001187 thermosetting polymer Polymers 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000002518 antifoaming agent Substances 0.000 description 9
- 238000003756 stirring Methods 0.000 description 6
- 239000000654 additive Substances 0.000 description 5
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004898 kneading Methods 0.000 description 4
- 229920001568 phenolic resin Polymers 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000002482 conductive additive Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Adjustable Resistors (AREA)
- Conductive Materials (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は可変抵抗器用の抵抗素子となる摺動用抵抗ペー
ストに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sliding resistance paste that serves as a resistance element for a variable resistor.
従来この種の摺動用抵抗ペーストは、フェノール樹脂や
エポキシ樹脂などの熱硬化性樹脂による樹脂バインダー
中に、カーボンブラックやグラファイトなどの導電性粒
子を混練してペースト化したものが一般的に知られてい
る。そして、この摺動用抵抗ペーストを絶縁基板の表面
にスプレーや印刷により皮膜状に付着させ、これを加熱
硬化して抵抗体とすることによって可変抵抗器用の抵抗
素子を作っていた。Conventionally, this type of sliding resistance paste is generally known as a paste made by kneading conductive particles such as carbon black or graphite into a resin binder made of thermosetting resin such as phenol resin or epoxy resin. ing. A resistance element for a variable resistor was produced by applying this sliding resistance paste to the surface of an insulating substrate in the form of a film by spraying or printing, and heating and curing it to form a resistor.
しかしながら抵抗素子上には、抵抗体よりも表面硬度の
硬い金属製（例えば、リン青銅、べＩＪ リウム銅を素
材どしたもの）の刷子が接触すると共に摺動するので、
この摩擦の頻繁な繰り返しによって抵抗膜が削り取られ
基板面の露出に至るという問題点があった。However, a brush made of a metal (for example, made of phosphor bronze or copper) that has a harder surface than the resistor contacts and slides on the resistor.
There is a problem in that the resistive film is scraped off due to frequent repetition of this friction, leading to the exposure of the substrate surface.
そこで本発明は前記事情に基づいてなされたものであり
、金属刷子との摺動に対して耐摩耗性に優れ、摺動用抵
抗器の寿命の大幅な改善に寄与でき得る摺動用抵抗ペー
ストを提供することを目的とする。The present invention has been made based on the above circumstances, and provides a sliding resistance paste that has excellent abrasion resistance against sliding with a metal brush and can contribute to a significant improvement in the life of sliding resistors. The purpose is to
上記目的を達成するため本発明の摺動用抵抗ペーストは
、樹脂バインダー中に導電性材料を付与すると共に、該
導電性材料より硬度が硬く且つ０．１μｍ乃至１０数μ
ｍの細さを有する繊維状の無機物質を添加することによ
って構成されている。In order to achieve the above object, the sliding resistance paste of the present invention not only provides a conductive material in a resin binder, but also has a hardness of 0.1 μm to 10-odd μm and is harder than the conductive material.
It is constructed by adding a fibrous inorganic substance having a thickness of m.
また、前記無機物質は炭素繊維、ガラス繊維、セラミッ
ク繊維、金属繊維若しくはセラミックウィスカ（炭化ケ
イ素）又は導電性を高めるために絶縁物であるガラス繊
維やセラミック繊維の表面に金属メッキを施したものが
好ましい。さらに、それらの無機物質を単独又は複合的
に添加してもよい。The inorganic substance may be carbon fiber, glass fiber, ceramic fiber, metal fiber, ceramic whisker (silicon carbide), or insulating glass fiber or ceramic fiber whose surface is plated with metal to improve conductivity. preferable. Furthermore, these inorganic substances may be added singly or in combination.
本発明による摺動用抵抗ペーストは、炭素繊維、セラミ
ック繊維、金属繊維などの硬度の硬い無機物質が添加物
として含まれているので、これを摺動用の可変抵抗器の
抵抗素子として使用すれば、該抵抗素子の皮膜に耐摩耗
性が付与される。すなわち、バインダー樹脂中に繊維状
の無機物質がランダムに分散しているので、摺動する金
属刷子によってバインダー樹脂は削られて行くが、繊維
状の無機物質との接触面ではその硬さから摩耗度合いが
少ない。The sliding resistance paste according to the present invention contains hard inorganic substances such as carbon fibers, ceramic fibers, and metal fibers as additives, so if it is used as a resistance element of a sliding variable resistor, Abrasion resistance is imparted to the coating of the resistance element. In other words, since the fibrous inorganic substance is randomly dispersed in the binder resin, the binder resin is scraped away by the sliding metal brush, but the surface that comes into contact with the fibrous inorganic substance is abraded due to its hardness. To a lesser extent.
また、ガラス繊維やセラミック繊維のような絶縁性の添
加物を使用した摺動用抵抗ペーストは、高抵抗用として
の役割を果し、他方炭素繊維、金属繊維若しくはセラミ
ックウィスカ（炭化ケイ素）又は前記絶縁物の表面に金
属メッキを施したもののような導電性の添加物を使用す
れば、抵抗値を低目に押さえる作用と共に、その配合に
よって電気的異常（ノイズの発生）を制御する作用を有
する。Also, sliding resistance pastes using insulating additives such as glass fibers or ceramic fibers serve as high resistance applications, while carbon fibers, metal fibers or ceramic whiskers (silicon carbide) or the insulating The use of conductive additives, such as those plated with metal on the surface of the object, has the effect of keeping the resistance low, and also has the effect of controlling electrical abnormalities (noise generation) depending on its composition.
以下、本発明の実施例について説明する。 Examples of the present invention will be described below.
まず、本発明による摺動用抵抗ペーストを得るために、
次の材料を用意する。すなわち、バインダー樹脂として
フェノール樹脂などの熱硬化性樹脂を］４３部、導電性
材料としてカーボンブラックやグラファイトを２３〜５
１部、溶剤としてイソプロピルアルコールやプチルカル
ビトールヲ５５〜９５部、他に消泡剤２〜５部をそれぞ
れ揃え、さらに繊維状をした炭素繊維、ガラス繊維、セ
ラミック繊維、金属繊維若しくはセラミックウィスカ（
炭化ケイ素）又は絶縁物であるガラス繊維やセラミック
繊維の表面に金属メッキを施したものであって、各繊維
の細さが０．１μｍ乃至１０数μｍのものを１〜５０部
それぞれ準備する。First, in order to obtain the sliding resistance paste according to the present invention,
Prepare the following ingredients. That is, 43 parts of a thermosetting resin such as phenol resin as a binder resin, and 23 to 5 parts of carbon black or graphite as a conductive material.
1 part, 55 to 95 parts of isopropyl alcohol or butylcarbitol as a solvent, and 2 to 5 parts of an antifoaming agent, and fibrous carbon fiber, glass fiber, ceramic fiber, metal fiber, or ceramic whisker (
1 to 50 parts of glass fibers or ceramic fibers (silicon carbide) or insulating materials whose surfaces are plated with metal, each having a fineness of 0.1 μm to more than 10 μm, are prepared.
次に、−］二記各材料の配合割合をそれぞれ変えて、実
施例１〜７に示ず各摺動用抵抗ペーストを得た。Next, the compounding ratios of the two materials were changed to obtain various sliding resistance pastes not shown in Examples 1 to 7.
（実施例１）
フェノール樹脂１−４３部、カーボンブラック１８部、
グラファイト８部、炭素繊維１０部、イソプロピルアル
コール３２部、及び消泡剤２部をそれぞれ混合攪拌した
後、三本ロールミルで混練し、さらにブチルカルピトー
ルにて粘度調整を行って、２．６にΩ／１」の摺動用抵
抗ペーストを得た。(Example 1) 1-43 parts of phenolic resin, 18 parts of carbon black,
After mixing and stirring 8 parts of graphite, 10 parts of carbon fiber, 32 parts of isopropyl alcohol, and 2 parts of antifoaming agent, they were kneaded in a three-roll mill, and the viscosity was adjusted with butyl calpitol to give a mixture of 2.6 and 2.6 parts. A sliding resistance paste of Ω/1” was obtained.
（実施例２）
フェノール樹脂１−４３部、カーボンブラック２４部、
グラファイト８部、ガラス繊維２０部、イソプロピルア
ルコール３２部、及び消泡剤２部をそれぞれ混合攪拌し
た後、三本ロールミルで混練し、さらにブチルカルピト
ールにて粘ｌ整を行って、１．６にΩ／口の摺動用抵抗
ペーストを得た。(Example 2) 1-43 parts of phenolic resin, 24 parts of carbon black,
After mixing and stirring 8 parts of graphite, 20 parts of glass fiber, 32 parts of isopropyl alcohol, and 2 parts of an antifoaming agent, they were kneaded in a three-roll mill, and the viscosity was adjusted with butyl calpitol to obtain a mixture of 1.6 A sliding resistance paste of Ω/mouth was obtained.
（実施例３）
フェノール樹脂１４３部、カーボンブラック収
２４部、グラファイト８部、セラミック繊維（アルミナ
繊ｍ）２０部、イソプロピルアルコール３２部及び消泡
剤２部をそれぞれ混合攪拌した後、三本ロールミルで混
練し、さらにブチルカルピトールにて粘度調整を行って
、２．ＯＫΩ／口の摺動用抵抗ペーストを得た。(Example 3) After mixing and stirring 143 parts of phenol resin, 24 parts of carbon black, 8 parts of graphite, 20 parts of ceramic fiber (alumina fiber M), 32 parts of isopropyl alcohol, and 2 parts of antifoaming agent, a three-roll mill was used. After kneading, the viscosity was adjusted with butylcarpitol, and 2. A sliding resistance paste of OKΩ/mouth was obtained.
（実施例４）
フェノール樹脂１４３部、カーボンブラック１８部、グ
ラファイト８部、金属繊維（ステンレス、ｌｌ）１０部
、イソプロピルアルコール３２部及び消泡剤２部をそれ
ぞれ混合攪拌した後、三本ロールミルで混練し、さらに
ブチルカルピトールにて粘度調整を行って、１．ＩＫΩ
／１コの摺動用抵抗ペーストを得た。(Example 4) After mixing and stirring 143 parts of phenol resin, 18 parts of carbon black, 8 parts of graphite, 10 parts of metal fiber (stainless steel, II), 32 parts of isopropyl alcohol, and 2 parts of antifoaming agent, the mixture was mixed in a three-roll mill. After kneading and further adjusting the viscosity with butylcarpitol, 1. IKΩ
/1 piece of sliding resistance paste was obtained.
（実施例５）
フェノール樹脂１４３部、カーボンブラック２４部、グ
ラファイト８部、セラミックウィスカ（炭化ケイ素ウィ
スカ）２０部、イソプロピルアルコール３２部、及び消
泡剤２部をそれぞれ混合攪拌した後、三本ロールミルで
混練し、さらにブチルカルピトールにて粘度調整を行っ
て、１．５にΩ／口の摺動用抵抗ペーストを得た。(Example 5) After mixing and stirring 143 parts of phenol resin, 24 parts of carbon black, 8 parts of graphite, 20 parts of ceramic whiskers (silicon carbide whiskers), 32 parts of isopropyl alcohol, and 2 parts of antifoaming agent, a three-roll mill was used. The mixture was kneaded with water, and the viscosity was adjusted with butyl calpitol to obtain a sliding resistance paste of 1.5 Ω/mouth.
（実施例６）
フェノール樹脂１４３部、カーボンブラック２０部、グ
ラファイト８部、導電性ガラス繊維（ガラス繊維に金属
メッキを施したもの）１０部、イソプロピルアルコール
３２部、及び消泡剤５部をそれぞれ混合攪拌した後、三
本ロールミルで混練し、さらにブチルカルピト−ルにて
粘度調整を行って、２．］ＫΩ／口の摺動用抵抗ペース
トを得た。(Example 6) 143 parts of phenolic resin, 20 parts of carbon black, 8 parts of graphite, 10 parts of conductive glass fiber (glass fiber plated with metal), 32 parts of isopropyl alcohol, and 5 parts of antifoaming agent. After mixing and stirring, the mixture was kneaded in a three-roll mill, and the viscosity was adjusted with butyl carpitol.2. ] A sliding resistance paste of KΩ/mouth was obtained.
（実施例７）
フェノール樹脂１４３部、カーボンブラック１８部、グ
ラファイト８部、炭素繊維１０部、セラミック繊維１−
０部、イソプロピルアルコール３２部、及び消泡剤２部
をそれぞれ混合攪拌した後、三本ロールミルで混練し、
さらにブチルカルピト−ルにて粘度調整を行って、２．
９にΩ／口の摺動用抵抗ペーストを得た。(Example 7) 143 parts of phenolic resin, 18 parts of carbon black, 8 parts of graphite, 10 parts of carbon fiber, 1-
0 parts, 32 parts of isopropyl alcohol, and 2 parts of antifoaming agent were mixed and stirred, and then kneaded in a three-roll mill.
Furthermore, the viscosity was adjusted with butylcarpitol, and 2.
A sliding resistance paste of Ω/mm was obtained.
Ｌ記名実施例１乃至７で得た各摺動用抵抗ペーストを、
スクリーン印刷機によって第１図及び第２図に示すニッ
ケルメッキをした電極２を形成した基板１上に印刷し、
１５０°Ｃの温度で６０分間加熱して硬化させ、金属刷
子４が摺動する膜厚１５〜２０μｍの抵抗素子３を形成
した。尚、繊維状の添加物は短繊維とはいえども数ｍｍ
の長さを有するものも有り、そのままではスクリーン印
刷による膜形成に於いてメツシュを通過できずに目詰り
を起こすが、ペースト製造時にロールミルを使用して混
練する事により、各繊維の長さ方向に対する折れや曲が
りを利用し１００μｍ以下の長さに切断され、スクリー
ン印刷による膜形成が支障なくできる。但し、各繊維の
幅方向に対しては充分な強度と硬度を有しているので、
ロールミル混練でも漬れることはない。Each sliding resistance paste obtained in L-registered Examples 1 to 7 was
Printed on the substrate 1 on which the nickel-plated electrode 2 shown in FIGS. 1 and 2 was formed using a screen printer,
It was cured by heating at a temperature of 150° C. for 60 minutes to form a resistance element 3 having a film thickness of 15 to 20 μm on which the metal brush 4 slides. Although fibrous additives are short fibers, they are only a few mm long.
Some fibers have a long length, and if left as is, they will not be able to pass through the mesh when forming a film by screen printing, causing clogging. However, by kneading using a roll mill during paste production, each fiber can be It is cut into lengths of 100 μm or less by utilizing the bends and bends, and film formation by screen printing can be performed without any problem. However, each fiber has sufficient strength and hardness in the width direction, so
Even when kneaded in a roll mill, it does not get pickled.
このようにして実施例１乃至７による各摺動用抵抗ペー
ストによって形成した各抵抗素子３における摺動回数と
耐摩耗性及び抵抗値変化を、従来の抵抗素子のそれと比
較しながら、以下の方法によって試験を行い、その結果
を第３図及び第４図のグラフに示した。The number of times of sliding, abrasion resistance, and resistance change in each resistance element 3 formed using each of the sliding resistance pastes according to Examples 1 to 7 in this way were compared with those of a conventional resistance element, and the following method was used. A test was conducted and the results are shown in the graphs of FIGS. 3 and 4.
この際、各実施例で得た抵抗ペーストにより形成した抵
抗素子と比べる比較例は、フェノール樹脂１４３部、カ
ーボンブラック２０部、グラファイト１０部、イソプロ
ピルアルコール３０部、及び消泡剤５部を混合攪拌した
後、三本ロールミルで混練し、さらにブチルカルピトー
ルにて粘度調整を行って得た２、５にΩ／口の摺動用抵
抗ペーストを、前記と同様の処理によってニッケルメッ
キによる電極を形成した基板上に印刷すると共に硬化さ
せた膜厚１５〜２０μ伯の従来の抵抗素子である。At this time, in a comparative example compared to the resistance element formed from the resistance paste obtained in each example, 143 parts of phenol resin, 20 parts of carbon black, 10 parts of graphite, 30 parts of isopropyl alcohol, and 5 parts of an antifoaming agent were mixed and stirred. After that, the paste was kneaded in a three-roll mill, and the viscosity was adjusted with butyl calpitol to obtain a sliding resistance paste of 2 and 5 Ω/mouth, and nickel-plated electrodes were formed by the same treatment as above. This is a conventional resistance element having a film thickness of 15 to 20 μm printed on a substrate and cured.
第３図及び第４図の各グラフに示す試験においては、摺
動刷子としてリン青銅を使用し、刷子圧５０ ｇｓ摺動
速度１−５ ｍｍ ／ ｓにて行った。その結果、第３
図に示すように、炭素繊維、ガラス繊維、セラミック繊
維、金属繊維若しくはセラミ・ツクウィスカ又はガラス
繊維の表面に金属メ・ツキを施したものを、単独或いは
複合的に配合して添加した各実施例のものは、それらを
添加していない比較例のものに比べて、刷子による摺動
回数との関係で摩耗の深さが遥かに小さいことが判かる
。すなわち、比較例のものは、２０万サイクル摺動後に
抵抗素子が完全に削り取られたのに対し、各実施例のも
のは、１００万サイクル摺動後でも４〜８Ｊ１ｍ程度し
か摩耗していない。In the tests shown in the graphs of FIGS. 3 and 4, phosphor bronze was used as the sliding brush, and the tests were conducted at a brush pressure of 50 gs and a sliding speed of 1-5 mm/s. As a result, the third
As shown in the figure, each example in which carbon fibers, glass fibers, ceramic fibers, metal fibers, ceramic whiskers, or glass fibers with metal plating applied to the surface were added singly or in combination. It can be seen that the depth of abrasion is much smaller in relation to the number of times of sliding with the brush compared to the comparative example in which these materials were not added. That is, in the comparative example, the resistance element was completely scraped off after 200,000 cycles, whereas in each example, the resistance element was only worn out by about 4 to 8 J1 m even after 1 million cycles.
また、第４図に示すように、刷子による摺動回数と抵抗
値変化率の関係を比較したグラフからも、前記添加物を
配合した各実施例のものは、それらを添加していない比
較例のものに比べて抵抗値の変化率が小さいことが判か
る。In addition, as shown in Figure 4, from the graph comparing the relationship between the number of sliding strokes with a brush and the rate of change in resistance value, it can be seen that the examples containing the above additives are different from the comparative examples without them. It can be seen that the rate of change in resistance value is smaller than that of
以上説明したように本発明による摺動用抵抗ペーストは
、これを可変抵抗器の抵抗素子として使用すれば、次に
記載するような効果を奏する。As explained above, when the sliding resistance paste according to the present invention is used as a resistance element of a variable resistor, it produces the following effects.
すなわら、本発明の摺動用抵抗ペース）・中には、炭素
繊維、ガラス繊維、セラミック繊維、金属繊維若しくは
セラミックウィスカ又は絶縁物であるガラス繊維やセラ
ミック繊維に金属メッキを施したものなど繊維状の無機
質を含有しているので、抵抗素子の皮膜硬度が増大し、
金属刷子との摺動に対して耐摩耗性能が飛躍的に向上す
ると共に、抵抗値の変化率が少なく電気的性能が安定し
ており、摺動用抵抗器の商品寿命を大幅に改善すること
ができる。In other words, the sliding resistance paste of the present invention) includes fibers such as carbon fibers, glass fibers, ceramic fibers, metal fibers or ceramic whiskers, or insulating glass fibers or ceramic fibers plated with metal. Since it contains inorganic substances, the hardness of the film of the resistance element increases.
The wear resistance against sliding with metal brushes has been dramatically improved, and the rate of change in resistance value is small and the electrical performance is stable, which can greatly improve the product life of sliding resistors. can.
特に絶縁性添加物に金属メ・ツキを施し導電性をイζ１
り化だ場合には、抵抗値を低目に押さえることができる
と共に、電気的特性の安定にも大いに貢］−１
献できる。In particular, metal coating is applied to insulating additives to improve conductivity.
In the case where the resistance value is reduced, the resistance value can be kept low, and it can greatly contribute to the stability of the electrical characteristics.
第１図は本発明の摺動用抵抗ペーストを使用して基板上
に抵抗素子を形成した一例を示す斜視図、第２図はその
断面図、第３図は抵抗素子における摺動回数と摩耗の深
さとの関係を比較したグラフ、第４図は同じく摺動回数
と抵抗値変化率との関係を比較したグラフである。FIG. 1 is a perspective view showing an example of a resistance element formed on a substrate using the sliding resistance paste of the present invention, FIG. A graph comparing the relationship with depth, and FIG. 4 is a graph comparing the relationship between the number of sliding movements and the rate of change in resistance value.
Claims (2)
その導電性材料より硬度が硬く、且つ０．１μｍ乃至１
０数μｍの細さを有する繊維状の無機物質を添加してペ
ースト化したことを特徴とする摺動用抵抗ペースト1. In addition to adding a conductive material to the resin binder,
Hardness is harder than that conductive material, and 0.1 μm to 1
A sliding resistance paste characterized in that it is made into a paste by adding a fibrous inorganic substance having a thickness of several micrometers.
属繊維若しくはセラミックウィスカ（炭化ケイ素）又は
ガラス繊維やセラミック繊維の表面に金属メッキを施し
たものであって、それらを単独或いは複合的に添加した
ことを特徴とする請求項１記載の摺動用抵抗ペースト2. The inorganic substance is glass fiber, ceramic fiber, metal fiber, ceramic whisker (silicon carbide), or metal plating applied to the surface of glass fiber or ceramic fiber, and these may be added singly or in combination. The sliding resistance paste according to claim 1, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12173190A JPH0418703A (en) | 1990-05-11 | 1990-05-11 | Resistance paste for slid resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12173190A JPH0418703A (en) | 1990-05-11 | 1990-05-11 | Resistance paste for slid resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0418703A true JPH0418703A (en) | 1992-01-22 |
Family
ID=14818487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12173190A Pending JPH0418703A (en) | 1990-05-11 | 1990-05-11 | Resistance paste for slid resistor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0418703A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6172595B1 (en) * | 1999-05-25 | 2001-01-09 | Alps Electric Co., Ltd. | Resistor excellent in micro-linearity characteristic and wear resistance and variable resistor using the same |
| WO2006103882A1 (en) * | 2005-03-29 | 2006-10-05 | Toyo Aluminium Kabushiki Kaisha | Paste composition, electrode and solar cell device comprising same |
| CN104464889A (en) * | 2014-12-26 | 2015-03-25 | 常熟联茂电子科技有限公司 | Embedded resistance paste |
-
1990
- 1990-05-11 JP JP12173190A patent/JPH0418703A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6172595B1 (en) * | 1999-05-25 | 2001-01-09 | Alps Electric Co., Ltd. | Resistor excellent in micro-linearity characteristic and wear resistance and variable resistor using the same |
| WO2006103882A1 (en) * | 2005-03-29 | 2006-10-05 | Toyo Aluminium Kabushiki Kaisha | Paste composition, electrode and solar cell device comprising same |
| CN104464889A (en) * | 2014-12-26 | 2015-03-25 | 常熟联茂电子科技有限公司 | Embedded resistance paste |
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