JPH0338004A - Resistance paste - Google Patents
Resistance pasteInfo
- Publication number
- JPH0338004A JPH0338004A JP1173302A JP17330289A JPH0338004A JP H0338004 A JPH0338004 A JP H0338004A JP 1173302 A JP1173302 A JP 1173302A JP 17330289 A JP17330289 A JP 17330289A JP H0338004 A JPH0338004 A JP H0338004A
- Authority
- JP
- Japan
- Prior art keywords
- resistance
- parts
- glassy carbon
- paste
- spherical glassy
- 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
- 229910021397 glassy carbon Inorganic materials 0.000 claims abstract description 26
- 239000011347 resin Substances 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 239000011230 binding agent Substances 0.000 claims abstract description 9
- 239000012298 atmosphere Substances 0.000 claims abstract description 5
- 239000004020 conductor Substances 0.000 claims abstract description 5
- 239000005011 phenolic resin Substances 0.000 claims description 11
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 7
- 239000007822 coupling agent Substances 0.000 claims description 7
- 229920001568 phenolic resin Polymers 0.000 claims description 7
- 238000005299 abrasion Methods 0.000 abstract description 6
- 238000010000 carbonizing Methods 0.000 abstract description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract 2
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 230000001050 lubricating effect Effects 0.000 abstract 1
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 12
- 229910002804 graphite Inorganic materials 0.000 description 11
- 239000010439 graphite Substances 0.000 description 11
- 239000006229 carbon black Substances 0.000 description 10
- 239000002518 antifoaming agent Substances 0.000 description 7
- 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
- 230000000052 comparative effect Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 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
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 101100180429 Mus musculus Klk1b3 gene Proteins 0.000 description 1
- 101100288126 Rattus norvegicus Klk3 gene Proteins 0.000 description 1
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 235000019589 hardness Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012856 packing Methods 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
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Adjustable Resistors (AREA)
- Apparatuses And Processes For Manufacturing Resistors (AREA)
- Non-Adjustable Resistors (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 resistance paste serving as a resistance element for a variable resistor.
従来、可変抵抗器用の抵抗素子は、フェノール樹脂或い
はエポキシ樹脂などの熱硬化性樹脂の樹脂バインダー中
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、このペースト化した抵抗ペース
トを絶縁基板の表面にスプレーや印刷によって皮膜状に
付着し、これを加熱硬化して抵抗体とし、この抵抗膜上
にノイズ低減のためのグリースを塗布したものが一般的
である。Conventionally, resistance elements for variable resistors are made by kneading conductive particles such as carbon black or graphite in a thermosetting resin binder such as phenol resin or epoxy resin to form a paste, and this paste is used as an insulator. Generally, it is attached to the surface of a substrate in the form of a film by spraying or printing, and then heated and cured to form a resistor, and this resistor film is coated with grease for noise reduction.
しかしながら抵抗素子上には、金属製（例えば、リン青
銅、ベリリウム銅を素材としたもの）の刷子が接触する
と共に摺動するので、表面硬度の異なる物質同志の摩擦
による摩耗とグリースによる抵抗膜の化学変化に伴なう
摩耗とが相まって、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。特にカーボン量の少ない高
抵抗ペーストを用いた抵抗素子ではその摩擦度合が激し
く、且つ湿度による抵抗値変化率が大きいという問題点
があった。However, since a metal brush (for example, made of phosphor bronze or beryllium copper) contacts and slides on the resistive element, there is abrasion due to friction between materials with different surface hardnesses and damage to the resistive film due to grease. Combined with the wear caused by the chemical change, there was a problem in that the resistive film was scraped off and the substrate surface was exposed. In particular, resistance elements using high-resistance pastes with a small amount of carbon have a problem in that the degree of friction is severe and the rate of change in resistance value due to humidity is large.
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、しかも耐
湿特性が良好である抵抗素子を得ることができる抵抗ペ
ーストを提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made based on the above-mentioned circumstances, and an object of the present invention is to provide a resistance paste capable of producing a resistance element that has excellent abrasion resistance against sliding with a metal brush and also has good moisture resistance properties. With the goal.
上記目的を達成するために本発明の抵抗ペーストは、樹
脂バインダー中に導電姓材料を付与すると共にフェノー
ル系樹脂を還元雰囲気中において高温で炭化焼成して得
た球形ガラス状カーボンを添加することによって構成さ
れている。また、前記球形ガラス状カーボンがカップリ
ング剤にて処理されたものであってもよい。In order to achieve the above object, the resistance paste of the present invention is produced by providing a conductive material in a resin binder and adding spherical glassy carbon obtained by carbonizing and firing a phenolic resin at high temperature in a reducing atmosphere. It is configured. Further, the spherical glassy carbon may be treated with a coupling agent.
本発明による抵抗ペーストは、球形ガラス状カーボンが
添加されているので、これを摺動用の可変抵抗器の抵抗
素子に使用すれば、該抵抗素子の皮膜中に潤滑性と耐摩
擦性並びにＩＴｉＪ湿性が付与される。また、球形ガラ
ス状カーボンをカップリング剤で処理しておけば、バイ
ンダー樹脂との濡れ性が良好になって一段と向上した耐
湿性が付与される。Since the resistance paste according to the present invention has spherical glassy carbon added, if it is used in the resistance element of a sliding variable resistor, the film of the resistance element will have lubricity, friction resistance, and ITiJ moisture resistance. will be granted. Furthermore, if the spherical glassy carbon is treated with a coupling agent, its wettability with the binder resin will be improved and further improved moisture resistance will be imparted.
なお、本発明による抵抗ペーストは、その含有する球形
ガラス状カーボンが１０−３Ω、ＣＩ程度の体積固有抵
抗を有しながらカーボンブラックのようなストラフチャ
ーがないため、バインダー樹脂中に均一に分散すること
によって、充填密度の高い高抵抗用のペーストとなって
いる。In addition, the resistance paste according to the present invention has a volume resistivity of 10-3 Ω and CI, while the spherical glassy carbon contained therein does not have stractures like carbon black, so that it can be uniformly dispersed in the binder resin. This makes it a high-resistance paste with a high packing density.
以下、本発明の実施例について説明する。まず、本発明
における抵抗ペーストを得るには、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１４３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２３〜５１部、溶剤としてイ
ソプロ１ルアルコールやブチルカルピトールを５５〜９
５部、他に消泡剤１〜６部をそれぞれ用意し、さらに、
球形のフェノール系樹脂を還元雰囲気中で炭化焼成して
得た球形ガラス状カーボンを１〜５０部を準備する。Examples of the present invention will be described below. First, in order to obtain the resistance paste of the present invention, the following materials are prepared. That is, 143 parts of a thermosetting resin such as phenol resin as a binder resin, 23 to 51 parts of carbon black or graphite as a conductive material, and 55 to 9 parts of isopro1 alcohol or butyl calpitol as a solvent.
5 parts, and 1 to 6 parts of antifoaming agent, and further,
1 to 50 parts of spherical glassy carbon obtained by carbonizing and firing a spherical phenolic resin in a reducing atmosphere is prepared.
上記材料の各配合割合を変え、実施例１〜５に示す各抵
抗ペーストを得た。Each of the resistance pastes shown in Examples 1 to 5 was obtained by changing the blending ratio of each of the above materials.
（実施例１）
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、球形ガラス状カーボン２部、イソプロ
ピルアルコール３２部及び消泡剤５部をそれぞれ混合し
撹拌した後、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なって、２．９囮／口の抵
抗ペーストを得た。(Example 1) 143 parts of phenolic resin, 20 parts of carbon black, 8 parts of graphite, 2 parts of spherical glassy carbon, 32 parts of isopropyl alcohol and 5 parts of antifoaming agent were mixed and stirred, and then kneaded in a three-roll mill. The viscosity was further adjusted with butylcarpitol to obtain a resistance paste with a weight of 2.9 decoys/mouth.
（実施例２）
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、球形ガラス状カーボン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
し撹拌した後、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なって、２．５１ｄｌ／
口の抵抗ペーストを得た。(Example 2) 143 parts of phenolic resin, 18 parts of carbon black, 8 parts of graphite, 10 parts of spherical glassy carbon, 32 parts of isopropyl alcohol and 2 parts of antifoaming agent were mixed and stirred, and then kneaded in a three-roll mill. , and further adjusted the viscosity with butyl calpitol to obtain 2.51 dl/
Got mouth resistance paste.
（実施例３）
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、球形ガラス状カーボン２０部、イソプ
ロピルアルコール３０部及び消泡剤３部をそれぞれ混合
し撹拌した後、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なって、１．５ｋｆｌ／
口の抵抗ペーストを得た。(Example 3) 143 parts of phenolic resin, 18 parts of carbon black, 8 parts of graphite, 20 parts of spherical glassy carbon, 30 parts of isopropyl alcohol, and 3 parts of antifoaming agent were mixed and stirred, and then kneaded in a three-roll mill. , and further adjusted the viscosity with butyl carpitol to 1.5 kfl/
Got mouth resistance paste.
（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、カップリング剤処理した球形ガラス状
カーボン１５部、イソプロピルアルコール３０部及び消
泡剤１０部をそれぞれ混合し撹拌した後、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
行なって、２゜５ｋｎ／口の抵抗ペーストを得た。(Example 4) 143 parts of phenol resin, 18 parts of carbon black, 8 parts of graphite, 15 parts of spherical glassy carbon treated with a coupling agent, 30 parts of isopropyl alcohol, and 10 parts of an antifoaming agent were mixed and stirred, and then The mixture was kneaded with this roll mill, and the viscosity was adjusted with butylcarpitol to obtain a resistance paste of 2.5 kn/mouth.
（実施例５）
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、カップリング剤処理した球形ガラス状
カーボン２０部、イソプロピルアルコール３０部及び消
泡剤２０部をそれぞれ混合し撹拌した後、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
行なって、１゜５にΩ／口の抵抗ペーストを得た。(Example 5) 143 parts of phenolic resin, 18 parts of carbon black, 8 parts of graphite, 20 parts of spherical glassy carbon treated with a coupling agent, 30 parts of isopropyl alcohol, and 20 parts of an antifoaming agent were mixed and stirred, and then The mixture was kneaded using a roll mill, and the viscosity was adjusted using butyl calpitol to obtain a resistance paste of 1.5 Ω/mouth.
上記各実施例１〜５で得た各抵抗ペーストをそれぞれス
クリーン印刷機によって、第１図及び第２図に示すニッ
ケルメッキした電極２を形成した基板１上に印刷し、１
５０°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１５〜２０ＩＪＪｎの抵抗素子３を形
成した。Each of the resistance pastes obtained in Examples 1 to 5 above was printed on a substrate 1 on which a nickel-plated electrode 2 as shown in FIGS. 1 and 2 was formed, using a screen printer.
It was cured by heating at a temperature of 50° C. for 60 minutes to form a resistance element 3 having a film thickness of 15 to 20 IJJn on which the metal brush 4 slides.
このようにして形成した抵抗素子３における摺動回数と
耐摩耗性及び抵抗値変化並びに耐湿特性を、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
行ない、その結果を第３図乃至第５図のグラフに示した
。Tests were conducted using the following method while comparing the number of sliding operations, abrasion resistance, resistance value change, and moisture resistance characteristics of the resistance element 3 thus formed with those of conventional resistance elements, and the results are shown in Figure 3. This is shown in the graph of FIG.
尚、各実施例に基づいて形成した抵抗素子３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２
０部、グラファイト１０部、イソプロピルアルコール３
０部及び消泡剤５部を混合し撹拌した後、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
行なって得た２、 ５ｋｎ１０の抵抗ペーストを、前
記と同様の処理ニ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１５〜２
０１ＪＪ１１の従来の抵抗素子である。In addition, in a comparative example for comparison with the resistance element 3 formed based on each example, 143 parts of phenol resin and 2 parts of carbon black were used.
0 parts, 10 parts of graphite, 3 parts of isopropyl alcohol
0 parts and 5 parts of antifoaming agent were mixed and stirred, kneaded in a three-roll mill, and the viscosity was further adjusted with butyl carpitol to obtain a resistance paste of 2.5kn10, which was then treated in the same manner as above. Film thickness: 15-2, printed and cured on a substrate with nickel-plated electrodes
This is a conventional resistance element of 01JJ11.
第３図及び第４図の各グラフに示す試験については、摺
動刷子としてリン青銅を使用し、刷子圧５０ｇ／−１摺
動スピード１５ｍｍ／ｓにて行なった。その結果、第３
図に示すように、球形ガラス状カーボンを添加した各実
施例のものは、これ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
に小さいこと方寸ＩＪ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
たのに対して、各実施例のものは、１００万サイクル摺
動後でも３〜１１１Ｊｎ１程度しか摩耗していない。特
に球形ガラス状カーボンを多く添加したもの程、摩耗の
程度が概ね少ない。The tests shown in the graphs of FIGS. 3 and 4 were conducted using phosphor bronze as a sliding brush at a brush pressure of 50 g/-1 and a sliding speed of 15 mm/s. As a result, the third
As shown in the figure, the depth of wear in each of the Examples to which spherical glassy carbon was added was far greater than that in the Comparative Examples to which this was not added, in relation to the number of times the brush was slid. It's small and the size is IJ. In other words, in the comparative example, the resistance element was completely scraped off after 200,000 cycles, whereas in each example, even after 1 million cycles, only about 3 to 111Jn1 was worn out. . In particular, the greater the amount of spherical glassy carbon added, the lower the degree of wear.
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は、球形ガラス状
カーボンを添加した各実施例のものは、これを添加して
いない比較例に比べて抵抗値の変化率が小さいことが判
かる。各実施例の比較においても、球形ガラス状カーボ
ンが多（添加しているもの程、抵抗値の変化が概ね小さ
い。In addition, as shown in Figure 4, from the graph comparing the relationship between the number of sliding strokes by the brush and the rate of change in resistance value, it is clear that the samples of each example in which spherical glassy carbon was added were compared with those without this addition. It can be seen that the rate of change in resistance value is smaller than in the example. Comparison of each example shows that the more spherical glassy carbon is added, the smaller the change in resistance value is.
さらに第５図のグラフに示す試験については、６０℃で
９０〜９５％ＲＩ（の恒温槽中に放置し、所定の時１ｕ
Ｊ間隔で取り出した後の抵抗値変化の測定を行なった。Furthermore, for the test shown in the graph of Figure 5, the sample was left in a constant temperature bath at 60°C and 90-95% RI, and 1 u
The change in resistance value after being taken out at intervals of J was measured.
その結果、球形ガラス状カーボンを添加した各実施例の
ものは、これを添加していない比較例のものに比べて、
経過時間との関係で抵抗値の変化が小さいことが判かる
。特に、カップリング剤処理をした球形ガラス状カーボ
ンを使用したものは、比較例に比べて５〜７％程度も抵
抗値の変化率が小さくなっている。As a result, the samples of each example to which spherical glassy carbon was added were found to have a lower
It can be seen that the change in resistance value is small in relation to the elapsed time. In particular, in the case of using spherical glassy carbon treated with a coupling agent, the rate of change in resistance value is about 5 to 7% smaller than that of the comparative example.
以上説明したように本発明による抵抗ペーストは、これ
を可変抵抗器の抵抗素子に使用すれば、次に記載するよ
うな効果を奏する。As explained above, when the resistance paste according to the present invention is used in a resistance element of a variable resistor, the following effects can be achieved.
すなわち、球形ガラス状カーボンを添加することによっ
て、抵抗素子に潤滑性と１ｌｆｆＪ摩擦性が付与され、
金属刷子による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、摺動用抵抗器の寿命を大幅に改善することが
できる。また、球形ガラス状カーボンを含有する本発明
による抵抗ペーストは、抵抗素子のｋｌＫ３．特性を向
上させ、抵抗器における電気的特性の長期間にわたる維
持に貢献することができる。特に、球形ガラス状カーボ
ンをカップリング剤で処理しておけば、抵抗素子の耐湿
特性が一段と向上する。That is, by adding spherical glassy carbon, lubricity and 1lffJ frictional properties are imparted to the resistance element.
The wear resistance against sliding with a metal brush is dramatically improved, and the rate of change in resistance value is small, resulting in stable electrical performance, and the life of the sliding resistor can be greatly improved. The resistive paste according to the present invention containing spherical glassy carbon can also be used for klK3. It can improve the characteristics and contribute to maintaining the electrical characteristics of the resistor over a long period of time. In particular, if the spherical glassy carbon is treated with a coupling agent, the moisture resistance of the resistance element can be further improved.
なお、本発明品に含有している球形ガラス状カーボンは
、体積固有抵抗が１０−３Ω、 ｃｍと通常のカーボン
ブラックやクラファイトに比べて大差がないにもかかわ
らずストラフチャーがないため、同量のボリュームを配
合しても抵抗ペーストの比抵抗値が下がらず、従って摺
動性が良好であると共に、比抵抗の高い抵抗ペーストを
得ることが可能となる。Although the spherical glassy carbon contained in the product of the present invention has a volume resistivity of 10-3 Ω, cm, which is not much different from that of ordinary carbon black or graphite, it does not have any struts, so it can be used in the same amount. The resistivity value of the resistive paste does not decrease even if the volume of resistive paste is mixed, and therefore it is possible to obtain a resistive paste with good sliding properties and high resistivity.
第１図は本発明の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、第５図は耐湿試験
結果を示したグラフである。
手続補正書（＠え、
平成１年８月３日
事件の表示
平成１年特許願第１７３３０２号
発明の名称
抵抗ペースト
補正をする者
事件との関係 特許出願人
住 所 富山県東砺波郡城端町北野２３１５名称 株式
会社 日本抵抗器製作所
式
理
人
住 所 富山県富山市千石町２丁目８
氏 名 （３６９４）弁理士 宮 １）友信
５ 補正の対象
明細書の「発明の詳細な説明」の欄
６ 補正の内容
（１〉 明細書第４頁７行目の「が１０−３Ω、ｃｍ
Ｊとあるを、「が１０−３Ω・０」と補正する。
（２）明細書第１１頁８行目の「が１０−３Ω、ｃｍＪ
とあるを、「が１０−３Ω・印」と補正する。
（３）明細書第１１頁９行目の「やクラファイト」とあ
るを、「やグラファイト」と補正する。Fig. 1 is a perspective view showing an example of a resistance element formed on a substrate using the resistance paste of the present invention, Fig. 2 is a cross-sectional view thereof, and Fig. 3 shows the number of times of sliding and the depth of wear in the resistance element. FIG. 4 is a graph comparing the relationship between the number of times of sliding and the rate of change in resistance value, and FIG. 5 is a graph showing the results of the moisture resistance test. Procedural amendment (@e) Display of the August 3, 1999 case 1999 Patent Application No. 173302 Name of the invention Person who amended the resistance paste Relationship to the case Patent applicant Address Johana-cho, Higashitonami-gun, Toyama Prefecture Kitano 2315 Name Nippon Resistor Manufacturing Co., Ltd. Address 2-8 Sengoku-cho, Toyama City, Toyama Prefecture Name (3694) Patent Attorney Miya 1) Tomonobu 5 "Detailed Description of the Invention" column of the specification to be amended 6 Contents of the amendment (1> Page 4, line 7 of the specification “is 10-3Ω, cm
Correct "J" to "is 10-3Ω・0". (2) “is 10-3Ω, cmJ” on page 11, line 8 of the specification
Correct the statement to read "is 10-3 Ω." (3) On page 11, line 9 of the specification, the phrase "Ya Graphite" should be corrected to "Ya Graphite."
Claims (2)
フェノール系樹脂を還元雰囲気中において高温で炭化焼
成した球形ガラス状カーボンを添加してペースト化した
ことを特徴とする抵抗ペースト1. In addition to adding a conductive material to the resin binder,
A resistance paste characterized by adding spherical glassy carbon that is carbonized and fired at high temperature in a reducing atmosphere to a phenolic resin.
理してあることを特徴とする請求項１記載の抵抗ペース
ト2. The resistance paste according to claim 1, wherein the spherical glassy carbon is treated with a coupling agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1173302A JP2772044B2 (en) | 1989-07-05 | 1989-07-05 | Resistance paste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1173302A JP2772044B2 (en) | 1989-07-05 | 1989-07-05 | Resistance paste |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0338004A true JPH0338004A (en) | 1991-02-19 |
| JP2772044B2 JP2772044B2 (en) | 1998-07-02 |
Family
ID=15957927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1173302A Expired - Fee Related JP2772044B2 (en) | 1989-07-05 | 1989-07-05 | Resistance paste |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2772044B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0870742A2 (en) * | 1997-04-09 | 1998-10-14 | Preh-Werke GmbH & Co. KG | Method of making glassy carbon powder, a paste made thereof having a predetermined electrical conductivity, and a resistive layer made from the paste |
| EP2397524A4 (en) * | 2009-02-16 | 2017-08-02 | Murata Manufacturing Co., Ltd. | Conductive resin composition, process for producing electronic part using same, connecting method, connection structure, and electronic part |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3699864B2 (en) | 1999-08-02 | 2005-09-28 | アルプス電気株式会社 | Conductive resin composition and encoder switch using the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6148903A (en) * | 1984-08-16 | 1986-03-10 | 株式会社東芝 | Method of producing printed circuit board with resistor |
| JPS62266805A (en) * | 1986-05-15 | 1987-11-19 | ダイヤ電子株式会社 | Manufacture of printed resistance element |
| JPS63207101A (en) * | 1987-02-24 | 1988-08-26 | 本田技研工業株式会社 | Resistance paste |
-
1989
- 1989-07-05 JP JP1173302A patent/JP2772044B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6148903A (en) * | 1984-08-16 | 1986-03-10 | 株式会社東芝 | Method of producing printed circuit board with resistor |
| JPS62266805A (en) * | 1986-05-15 | 1987-11-19 | ダイヤ電子株式会社 | Manufacture of printed resistance element |
| JPS63207101A (en) * | 1987-02-24 | 1988-08-26 | 本田技研工業株式会社 | Resistance paste |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0870742A2 (en) * | 1997-04-09 | 1998-10-14 | Preh-Werke GmbH & Co. KG | Method of making glassy carbon powder, a paste made thereof having a predetermined electrical conductivity, and a resistive layer made from the paste |
| EP0870742A3 (en) * | 1997-04-09 | 1999-05-12 | Preh-Werke GmbH & Co. KG | Method of making glassy carbon powder, a paste made thereof having a predetermined electrical conductivity, and a resistive layer made from the paste |
| EP2397524A4 (en) * | 2009-02-16 | 2017-08-02 | Murata Manufacturing Co., Ltd. | Conductive resin composition, process for producing electronic part using same, connecting method, connection structure, and electronic part |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2772044B2 (en) | 1998-07-02 |
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