JPS622403B2 - - Google Patents
Info
- Publication number
- JPS622403B2 JPS622403B2 JP54026334A JP2633479A JPS622403B2 JP S622403 B2 JPS622403 B2 JP S622403B2 JP 54026334 A JP54026334 A JP 54026334A JP 2633479 A JP2633479 A JP 2633479A JP S622403 B2 JPS622403 B2 JP S622403B2
- Authority
- JP
- Japan
- Prior art keywords
- resistance
- conductive
- fibers
- carbon black
- graphite
- 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.)
- Expired
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- 239000004020 conductor Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 12
- 230000002265 prevention Effects 0.000 claims description 11
- 239000010439 graphite Substances 0.000 claims description 10
- 229910002804 graphite Inorganic materials 0.000 claims description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 description 5
- 239000006229 carbon black Substances 0.000 description 4
- 235000019241 carbon black Nutrition 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 4
- -1 polyethylene, ethylene-propylene Polymers 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000006230 acetylene black Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 238000010894 electron beam technology Methods 0.000 description 3
- 239000011163 secondary particle Substances 0.000 description 3
- 229920002379 silicone rubber Polymers 0.000 description 3
- 239000004945 silicone rubber Substances 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 2
- 229920000800 acrylic rubber Polymers 0.000 description 2
- 239000004760 aramid Substances 0.000 description 2
- 229920003235 aromatic polyamide Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 229920001973 fluoroelastomer Polymers 0.000 description 2
- 239000012784 inorganic fiber Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 239000004709 Chlorinated polyethylene Substances 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- 239000004962 Polyamide-imide Substances 0.000 description 1
- OKKRPWIIYQTPQF-UHFFFAOYSA-N Trimethylolpropane trimethacrylate Chemical compound CC(=C)C(=O)OCC(CC)(COC(=O)C(C)=C)COC(=O)C(C)=C OKKRPWIIYQTPQF-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 229920005601 base polymer Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 239000011243 crosslinked material Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 125000004836 hexamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 229920002681 hypalon Polymers 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- ONKDEAUMMKIOFE-UHFFFAOYSA-N octadecanoic acid 1-phenylnaphthalen-2-amine Chemical compound C1(=CC=CC=C1)C1=C(C=CC2=CC=CC=C12)N.C(CCCCCCCCCCCCCCCCC)(=O)O ONKDEAUMMKIOFE-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 239000003504 photosensitizing agent Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920003055 poly(ester-imide) Polymers 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000006235 reinforcing carbon black Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
【発明の詳細な説明】
本発明は自動車等の点火装置に用いられる雑音
防止用高圧抵抗電線に関するものである。
自動車などの内燃機関の電気点火装置からは火
花放電によつて高周波の電気振動が発生し、この
ため雑音電波として無線通信に障害を与えるが、
これは点火回路に使用される高圧電線を抵抗体と
することによつて大幅に防止することができるも
のであり、綿糸、テトロン糸などの天然もしくは
合成繊維またはガラス繊維などの無機質繊維など
からなる繊維紐上に導電性混和物を適当な方法で
被覆して抵抗導体とし、その周上にゴムまたはプ
ラスチツクなどの絶縁材料にて絶縁層を設けたも
のが用いられていた。
これらの雑音防止用高圧抵抗電線では、製造時
の初期抵抗値のばらつきが大きく、その使用時に
遭遇するヒートサイクル、湿度サイクル或いは潤
滑油の付着などに起因して容易に電気抵抗値が著
しく変動するなどという大きな欠点があつた。
自動車雑音防止用高圧抵抗電線についての電気
抵抗値の初期値及び許容変化率については、JIS
−C3409−1975に規定されているものであるが、
従来品においてはしばしばかかる規格を逸脱する
ものであつた。
本発明の目的は、前記した従来技術の欠点を解
消、初期電気抵抗値のばらつきが少なく、実使用
条件においてその電気抵抗値の変動が少なく、し
かも雑音防止効果の大きい雑音防止用高圧抵抗電
線を提供することにある。
本発明は従来技術を改善するために数多く実験
を行い研究した結果、導電性材料として導電性カ
ーボンブラツクとともにグラフアイトを併用すれ
ば、導電性カーボンブラツクの二次粒子の凝集を
防ぎ得ることは着目してなされたものであり、こ
のような導電性材料を含有した導電性混和物を繊
維上に被覆して成る抵抗導体の周上に電気絶縁層
を設けて構成した雑音防止用高圧抵抗電線では、
初期電気抵抗値のばらつきが少なく、かつ上述の
如き環境に依存する電気抵抗値の変動が極めて小
さく、極めて安定した性能を発揮することを見い
だしたものである。
ここに導電性カーボンブラツクとは通常ゴム、
プラスチツクの導電性付与剤として使用されてい
るものである。例えばアセチレンブラツク、ケツ
チエンブラツクEC（アクゾ社製品）、ベルカン
XC−72（キヤボツト社製品）、ベルカンＣ（キヤ
ボツト社製品）、コンダクテツクスSCF（コンチ
ネンタルカーボン社製品）、コンチネツクスCF
（コンチネンタルカーボン社製品）、旭HS−500
（旭カーボン社製品）、ユナイラドN195、Ｎ−296
（アシランドケミカル社製品）コラツクスＬ（デ
グサ社製品）などである。
カーボンブラツクとグラフアイトとの併用量に
ついては導電性カーボンブラツクの種類によつて
当然異なつており、各々について適当な範囲があ
る。特に限定するものではないが、およそカーボ
ンブラツク／グラフアイト＝0.1〜10の範囲で用
いることが好ましい。なお、必要に応じてこれら
の導電性カーボンブラツクを二種類以上組合せて
使用してもよいし、あるいは導電性カーボンブラ
ツクに特に導電性に寄与しない一般の補強用カー
ボンブラツクを併用しても差支えない。
上記導電性混和物が被覆される繊維としては、
ポリエステル、ポリイミド、ポリエステルイミ
ド、
芳香族ポリアミド、ポリアミドイミドなどの有
機繊維、またはガラス繊維などの無機繊維または
それらを複合した繊維などを用い得る。
また導電性混和物のベースポリマーとしては必
要とする耐熱性、耐油性などによつて異なるが、
一般的にはフツ素ゴム、アクリルゴム、シリコー
ンゴム、エチレン−酢酸ビニルコポリマー、エチ
レン−アクリル酸エステルコポリマー、塩素化ポ
リエチレン、エチレン−プロプレンゴム、クロロ
スルホン化ポリエチレン、アクリル酸エステルオ
リゴマー、アクリルウレタンオリゴマーなどが用
い得る。
これら導電性混和物を前記した繊維上に押出被
覆してもよいし、必要に応じて希釈剤、有機溶剤
を加えて塗料として前記繊維上に塗布被覆しても
よい。
さらに、架橋剤、架橋促進剤、架橋助剤、光増
感剤などを加えて蒸気加熱、熱風加熱、赤外線加
熱、電子線照射、紫外線照射などの方法によつて
架橋させてもよい。
なお、その他に酸化防止剤、安定剤、滑剤、軟
化剤、補強剤、充填剤、粘着付与剤、可塑剤等を
必要に応じて添加しても一向にさしつかえない。
本発明の実施例の組成を参考例の組成とともに
次に示す。
実施例 １
シリコーンゴム 100重量部
ケツチエンブラツクEC 20 〃
グラフアイト（粒度1000メツシユ） 50 〃
バンゾイルパーオキサイド １ 〃
上記混和物をトルエンに溶解し、ガラス繊維に
塗布被覆した後、熱風加熱により架橋せしめたも
のを抵抗導体とした。
実施例 ２
アクリルゴム 100重量部
アセチレンブラツク 50 〃
グラフアイト（粒度1000メツシユ） 50 〃
ステアリン酸 １ 〃
フエニル−β−ナフチルアミン １ 〃
ヘキサメチレンカーバイト １ 〃
上記混和物をポリイミド繊維上に押出被覆した
後、電子線照射により架橋させたものを抵抗導体
とした。
参考例 １
フツ素ゴム 100重量部
アセチレンブラツク 50 〃
Ｎ・N′−ジンレナミリデン−１・６−ヘキサジ
アミン ２ 〃
酸化マグネシウム １重量部
上記混和物をメチルエチルケトンに溶解し、ガ
ラス繊維上に塗布被覆し、熱風加熱により架橋し
たものを抵抗導体とした。
参考例 ２
エチレン−酢酸ビニルコポリマー（酢ビ量＝15
％、MI＝15） 100重量部
ケツチエンブラツクEC 30 〃
イルガノツクス1010 0.5 〃
トリメチロールプロパントリメタクリレート
３ 〃
上記混和物を芳香族ポリアミド繊維上に押出被
覆した後、電子線を照射することにより架橋した
ものを抵抗導体とした。
次に、前記各例の抵抗導体の外側に厚さ２mmの
エチレン−プロピレンゴム絶縁体、厚さ0.7mmの
シリコーンゴムシース層を順次設けて製造した
16KΩ級雑音防止用高圧抵抗電線について、電気
抵抗値並びにJIS−C3409−1975に定められた抵
抗値温度特性、ライフサイクル、抵抗値耐水性の
試験を行つた。得られた結果は第１表の如くであ
つた。なお第１表における電気抵抗値は５本の試
料の平均値を、また抵抗値変化率については上限
値と下限値を示すものである。
第１表から明らかなように、導電性カーボンブ
ラツクとグラフアイトを併用した導電性混和物を
繊維上に被覆してなる抵抗導体を用いた本発明の
雑音防止用抵抗電線は、環境に依存する電気抵抗
値の変化率が従来品に比べ数段と小さく、極めて
安定した性能を発揮するものである。
導電性材料として導電性カーボンブラツクとグ
ラフアイトを併用した場合、電気抵抗値の変化が
少ない理由としては、カーボンブラツクの二次粒
子間に潤滑作用を有するグラフアイトが存在する
ことにより、二次粒子による連鎖や凝集体の形成
を防ぎ、導電性材料が導電性混和物中に均一に分
散するためと考えられる。
以上のことから導電性材料として導電性カーボ
ンブラツクとグラフアイトを併用した導電性混和
物を繊維上に被覆した抵抗導体の周上に電気絶縁
層を設けた本発明の雑音防止用高圧抵抗電線は、
使用時に遭遇するヒートサイクル、湿度サイク
ル、或は潤滑油、水分の付着などの環境に依存す
る電気抵抗値が小さく、極めて安定した性能を有
し、かつ優れた雑音防止効果を発揮するものであ
る。
【表】DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a high-voltage resistance wire for noise prevention used in ignition systems for automobiles and the like. High-frequency electrical vibrations are generated by spark discharge from the electric ignition system of internal combustion engines such as automobiles, which interfere with wireless communication as radio noise.
This can be largely prevented by using a resistor in the high-voltage electric wire used in the ignition circuit, which is made of natural or synthetic fibers such as cotton thread or Tetoron thread, or inorganic fiber such as glass fiber. The fiber string was coated with a conductive mixture in an appropriate manner to form a resistance conductor, and an insulating layer made of an insulating material such as rubber or plastic was provided around the periphery. These high-voltage resistance wires for noise prevention have large variations in initial resistance value during manufacturing, and the electrical resistance value can easily change significantly due to heat cycles, humidity cycles, or adhesion of lubricating oil during use. There were some major drawbacks. Regarding the initial value and allowable rate of change of electrical resistance for high-voltage resistance wires for automobile noise prevention, please refer to JIS
−C3409-1975, but
Conventional products often deviate from such standards. The purpose of the present invention is to eliminate the drawbacks of the prior art described above, to provide a high-voltage resistance wire for noise prevention that has little variation in initial electrical resistance value, less variation in electrical resistance value under actual usage conditions, and has a large noise prevention effect. It is about providing. As a result of conducting numerous experiments and research to improve the conventional technology, the present invention has focused on the fact that if graphite is used in combination with conductive carbon black as a conductive material, it is possible to prevent the agglomeration of secondary particles of conductive carbon black. A high-voltage resistance wire for noise prevention is constructed by providing an electrical insulation layer on the circumference of a resistance conductor made by coating fibers with a conductive mixture containing such a conductive material. ,
It has been found that the initial electrical resistance value has little variation, and the above-mentioned environment-dependent variation in electrical resistance value is extremely small, and it exhibits extremely stable performance. Here, conductive carbon black is usually rubber,
It is used as an agent for imparting electrical conductivity to plastics. For example, acetylene black, Ketutyen Black EC (Akzo product), Belcan
XC-72 (Cabot product), Belcan C (Cabot product), Conductex SCF (Continental Carbon product), Continex CF
(Continental Carbon Company product), Asahi HS-500
(Asahi Carbon product), Unairad N195, N-296
(Ashiland Chemical Co. product) Corax L (Degussa Co. product), etc. The amount of carbon black and graphite to be used in combination naturally varies depending on the type of conductive carbon black, and there is an appropriate range for each type. Although not particularly limited, it is preferable to use carbon black/graphite in a range of about 0.1 to 10. Note that, if necessary, two or more of these conductive carbon blacks may be used in combination, or a general reinforcing carbon black that does not particularly contribute to conductivity may be used in combination with the conductive carbon black. . The fibers coated with the above conductive mixture include:
Organic fibers such as polyester, polyimide, polyesterimide, aromatic polyamide, polyamideimide, inorganic fibers such as glass fibers, or composite fibers thereof may be used. The base polymer for the conductive mixture varies depending on the required heat resistance, oil resistance, etc.
Commonly used materials include fluoro rubber, acrylic rubber, silicone rubber, ethylene-vinyl acetate copolymer, ethylene-acrylic ester copolymer, chlorinated polyethylene, ethylene-propylene rubber, chlorosulfonated polyethylene, acrylic ester oligomer, and acrylic urethane oligomer. Can be used. These conductive mixtures may be extruded and coated onto the above-mentioned fibers, or may be coated as a paint onto the above-mentioned fibers by adding a diluent and an organic solvent as necessary. Furthermore, a crosslinking agent, a crosslinking accelerator, a crosslinking aid, a photosensitizer, etc. may be added, and crosslinking may be carried out by methods such as steam heating, hot air heating, infrared heating, electron beam irradiation, and ultraviolet irradiation. In addition, there is no problem in adding antioxidants, stabilizers, lubricants, softeners, reinforcing agents, fillers, tackifiers, plasticizers, etc. as necessary. The compositions of Examples of the present invention are shown below along with the compositions of Reference Examples. Example 1 Silicone rubber 100 parts by weight Ketchen Black EC 20 Graphite (particle size 1000 mesh) 50 Vanzoyl peroxide 1 The above mixture was dissolved in toluene, coated on glass fibers, and then crosslinked by heating with hot air. The resulting material was used as a resistance conductor. Example 2 Acrylic rubber 100 parts by weight Acetylene black 50 Graphite (particle size 1000 mesh) 50 Stearic acid 1 Phenyl-β-naphthylamine 1 Hexamethylene carbide 1 After extrusion coating the above mixture onto polyimide fibers , which was crosslinked by electron beam irradiation and used as a resistance conductor. Reference example 1 Fluororubber 100 parts by weight Acetylene black 50 〃 N・N'-ginrenamylidene-1,6-hexadiamine 2 〃 Magnesium oxide 1 part by weight The above mixture was dissolved in methyl ethyl ketone and coated on glass fiber, The crosslinked material was made into a resistance conductor by heating with hot air. Reference example 2 Ethylene-vinyl acetate copolymer (vinyl acetate amount = 15
%, MI=15) 100 parts by weight Ketschien Black EC 30 〃 Irganox 1010 0.5 〃 Trimethylolpropane trimethacrylate
3. The above mixture was extruded and coated on aromatic polyamide fibers, and then crosslinked by irradiation with an electron beam to obtain a resistance conductor. Next, an ethylene-propylene rubber insulator with a thickness of 2 mm and a silicone rubber sheath layer with a thickness of 0.7 mm were sequentially provided on the outside of the resistance conductor of each of the above examples.
We conducted tests on electrical resistance, resistance temperature characteristics, life cycle, and resistance water resistance specified in JIS-C3409-1975 for 16KΩ class high-voltage resistance wire for noise prevention. The results obtained were as shown in Table 1. The electrical resistance values in Table 1 are the average values of five samples, and the resistance change rate shows the upper and lower limits. As is clear from Table 1, the resistance wire for noise prevention of the present invention, which uses a resistance conductor made by coating fibers with a conductive mixture of conductive carbon black and graphite, The rate of change in electrical resistance is much smaller than conventional products, and it exhibits extremely stable performance. The reason why there is little change in electrical resistance when conductive carbon black and graphite are used together as conductive materials is that the presence of graphite, which has a lubricating effect between the secondary particles of carbon black, causes the secondary particles to This is thought to be due to the fact that the conductive material is uniformly dispersed in the conductive mixture by preventing the formation of chains and aggregates. Based on the above, the high-voltage resistance wire for noise prevention of the present invention has an electrically insulating layer on the circumference of the resistance conductor, which is made by coating fibers with a conductive mixture of conductive carbon black and graphite as conductive materials. ,
It has a low electrical resistance value that depends on the environment such as heat cycles, humidity cycles, or adhesion of lubricating oil and moisture encountered during use, has extremely stable performance, and exhibits excellent noise prevention effects. . 【table】
Claims (1)
ム、プラスチツクに併用添加して得られる半導電
性混和物を繊維上に被覆して成る抵抗導体を有す
ることを特徴とする雑音防止用高圧抵抗電線。1. A high-voltage resistance wire for noise prevention, characterized by having a resistance conductor formed by coating fibers with a semiconductive mixture obtained by adding conductive carbon black and graphite to rubber or plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2633479A JPS55119313A (en) | 1979-03-06 | 1979-03-06 | Noise preventive high voltage resistance wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2633479A JPS55119313A (en) | 1979-03-06 | 1979-03-06 | Noise preventive high voltage resistance wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55119313A JPS55119313A (en) | 1980-09-13 |
| JPS622403B2 true JPS622403B2 (en) | 1987-01-20 |
Family
ID=12190525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2633479A Granted JPS55119313A (en) | 1979-03-06 | 1979-03-06 | Noise preventive high voltage resistance wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55119313A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3300529B2 (en) * | 1994-03-31 | 2002-07-08 | 日鉄鉱業株式会社 | Antistatic filtering material and method for producing the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4825589A (en) * | 1971-08-03 | 1973-04-03 | ||
| JPS5021275A (en) * | 1973-05-29 | 1975-03-06 | ||
| JPS5061435A (en) * | 1973-10-02 | 1975-05-27 |
-
1979
- 1979-03-06 JP JP2633479A patent/JPS55119313A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4825589A (en) * | 1971-08-03 | 1973-04-03 | ||
| JPS5021275A (en) * | 1973-05-29 | 1975-03-06 | ||
| JPS5061435A (en) * | 1973-10-02 | 1975-05-27 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55119313A (en) | 1980-09-13 |
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