JPS63279502A - Conductive fine powder - Google Patents
Conductive fine powderInfo
- Publication number
- JPS63279502A JPS63279502A JP11389887A JP11389887A JPS63279502A JP S63279502 A JPS63279502 A JP S63279502A JP 11389887 A JP11389887 A JP 11389887A JP 11389887 A JP11389887 A JP 11389887A JP S63279502 A JPS63279502 A JP S63279502A
- Authority
- JP
- Japan
- Prior art keywords
- fine powder
- conductivity
- less
- grain size
- average grain
- 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
- 239000000843 powder Substances 0.000 title claims abstract description 50
- 239000011247 coating layer Substances 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims description 22
- 239000010410 layer Substances 0.000 claims description 3
- 239000011701 zinc Substances 0.000 abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052802 copper Inorganic materials 0.000 abstract description 3
- 239000010949 copper Substances 0.000 abstract description 3
- 229910052718 tin Inorganic materials 0.000 abstract description 3
- 239000011135 tin Substances 0.000 abstract description 3
- 229910052725 zinc Inorganic materials 0.000 abstract description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract description 2
- 150000002736 metal compounds Chemical class 0.000 abstract description 2
- 229910052719 titanium Inorganic materials 0.000 abstract description 2
- 239000010936 titanium Substances 0.000 abstract description 2
- 238000004040 coloring Methods 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 29
- 229910052573 porcelain Inorganic materials 0.000 description 16
- 239000011787 zinc oxide Substances 0.000 description 14
- 239000011248 coating agent Substances 0.000 description 12
- 238000000576 coating method Methods 0.000 description 11
- 239000000203 mixture Substances 0.000 description 10
- 238000004458 analytical method Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 3
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000765 intermetallic Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000001247 metal acetylides Chemical class 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 239000012190 activator Substances 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
- 238000001816 cooling Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- -1 methane series aliphatic hydrocarbon Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000002411 thermogravimetry Methods 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分骨〕 本発明は、導電性に優れた微粉末に関するものである。[Detailed description of the invention] [Industrial use parts] The present invention relates to a fine powder with excellent conductivity.
平均粒子径が５μｍ以下で、導電性を有する、酸化亜鉛
、シリカ、アルミナ、酸化錫、酸化チタンなどの酸化物
、銅、アルミニウム、亜鉛、錫、ニッケルなどの金属、
炭化物、珪化物、金属間化合物などの微粉末は、電子電
気機器に生じる静電気障害の防止のため絶縁性物質に添
加する分散剤、ファクシミリ用その他の情報記録紙を製
造する際のコーティング剤などとして種々の用途に用い
られている。Oxides such as zinc oxide, silica, alumina, tin oxide, and titanium oxide, and metals such as copper, aluminum, zinc, tin, and nickel, which have an average particle diameter of 5 μm or less and have conductivity;
Fine powders such as carbides, silicides, and intermetallic compounds are used as dispersants added to insulating materials to prevent static electricity damage in electronic and electrical equipment, and as coating agents when manufacturing facsimile and other information recording papers. It is used for various purposes.
このような導電性微粉末は優れた導１性を有することが
必要であるが、従来１導電性に優れた微粉末としては、
粉末にＡｌ、 Ｇａ、Ｉｎなどの活性化剤を添加（ドー
プ）してなるものが知られている。Such conductive fine powder must have excellent conductivity, but conventional fine powders with excellent conductivity include:
It is known that the powder is doped with an activator such as Al, Ga, or In.
（特開昭６０−１１２２６号公報）
しかしながらこのような微粉末の導電性は、１００〜伽
の加圧下で測定して数百Ω・薗程度であり、まだ充分で
はないうえに、その微粉末の平均粒子径は精々Ｏ，ｎμ
ｍ程度に止まるものである。(Japanese Unexamined Patent Publication No. 11226/1983) However, the conductivity of such fine powder is only a few hundred ohms when measured under a pressure of 100 to 300 ohms, which is still not sufficient, and the conductivity of such fine powder is The average particle size of is at most O, nμ
It stays at about m.
本発明の目的は、以上の点に鑑み、導電性が可及的に優
れ平均粒子径が５μｍ以下の所望の大きざを有する微粉
末を提供することにある。In view of the above points, an object of the present invention is to provide a fine powder having as good conductivity as possible and a desired average particle size of 5 μm or less.
本発明の導電性微粉末は、上記目的を達成するものとし
て、５μｍ以下の平均粒子径を有し、その表面に実質的
に炭素からなる被覆層が１〜２００Ｘの層厚で形成され
てなるものである。The conductive fine powder of the present invention achieves the above object, and has an average particle diameter of 5 μm or less, and has a coating layer substantially made of carbon formed on its surface with a layer thickness of 1 to 200×. It is something.
本発明の導電性微粉末は、微粉末の表面に実質的に炭素
からなる被覆層が形成されている。この微粉末としては
、亜鉛、錫、チタン、銅、アルミニウムなどの金属、金
属の酸化物、炭化物などの金属化合物、金属間化合物で
、平均粒子径が５μｍ以下のものが挙げられる。平均粒
子径が５μｍを超えると、前記用途に好適な微粉末とな
り難く、これを粉砕して所望の粒度に下ると導電性が著
しく低下下る。In the conductive fine powder of the present invention, a coating layer made essentially of carbon is formed on the surface of the fine powder. Examples of the fine powder include metals such as zinc, tin, titanium, copper, and aluminum, metal compounds such as metal oxides and carbides, and intermetallic compounds having an average particle size of 5 μm or less. When the average particle size exceeds 5 μm, it is difficult to obtain a fine powder suitable for the above-mentioned uses, and when the powder is pulverized to a desired particle size, the conductivity is significantly reduced.
この微粉末の表面に形成される実質的に炭素からなる被
覆層の層厚は、１ｘ未満では充分に優れた導電性が発揮
され得ず、一方、２００ｘを超えるとより優れた導電性
が望めなくなるうえに、微粉末基材の色が失なわれ、得
られる導電性微粉末に被膜の色の着色が著しくなる。こ
の膜厚の好ましい範囲は、５〜１００Ｒである。If the thickness of the coating layer made essentially of carbon formed on the surface of this fine powder is less than 1x, sufficiently excellent conductivity cannot be exhibited, while if it exceeds 200x, better conductivity can be expected. In addition, the color of the fine powder base material is lost, and the color of the coating on the resulting conductive fine powder becomes significant. The preferred range of this film thickness is 5 to 100R.
〔実施例〕 以下、本発明の実施例を比較例と共に説明する。〔Example〕 Examples of the present invention will be described below along with comparative examples.
実施例１
平均粒径０．０３μｍ（比表面積２８．８ｍ／ｇ）の酸
化亜鉛微粉末１０ ｇを入れた磁製ボートを、プロパン
５０容量％、残部Ａｒからなる混合ガスが３１／分の流
量で流れている５００Ｃに保持した磁製管に速やかに装
入し、そこで２分間静置した。その後、磁製ボートを常
温の磁製管端に速かに移動すると同時にプロパンの供給
を止め、Ａｒ流量を増加することによって雰囲気をＡｒ
に置換しながら酸化亜鉛微粉末を急冷した。こうして得
られた酸化亜鉛微粉末は青灰色で、平均粒径０．０４μ
ｍ（比表面積２５．０ ｍ ７ｇ） 、１００ ｋｇ／
ｃｍ（Ｄ加圧下で測定Ｌ／ ７ｊ Ｎ気伝導度０．５２
Ω−１・ｃｍ−１であった。なおこの処理前における電
気伝導度は０．８Ｘ１０＝Ω″″１・薗″″１であった
。Example 1 A porcelain boat containing 10 g of zinc oxide fine powder with an average particle size of 0.03 μm (specific surface area 28.8 m/g) was heated to a mixed gas of 50% by volume propane and the balance Ar at a flow rate of 31/min. The sample was immediately placed in a porcelain tube maintained at 500C, and allowed to stand there for 2 minutes. After that, the porcelain boat was quickly moved to the end of the porcelain tube at room temperature, the propane supply was stopped at the same time, and the Ar flow rate was increased to change the atmosphere to Ar.
The zinc oxide fine powder was quenched while replacing with The zinc oxide fine powder thus obtained has a blue-gray color and an average particle size of 0.04 μm.
m (specific surface area 25.0 m 7g), 100 kg/
cm (D measured under pressure L/7j N conductivity 0.52
It was Ω-1·cm-1. The electrical conductivity before this treatment was 0.8×10=Ω″″1·Sono″″1.
又、この微粉末の被膜の組成分析と厚み測定を行なった
。組成分析では、ＣＮコーダーで測定したＣ量が試料導
電性微粉末１０００ ｇにつき０．１１５ｇであったこ
と、熱重量分析で測定した重量減少が同じ微粉末１００
０ ｇにつ！ ０．１２１ ｇであること、及びＥＰＭ
Ａによって検出された元素がＺｎ、 （！、 ０以外は
殆ど認められなかったことにより、実質的にＣであった
。そして、厚み測定では走査型電子顕微鏡による観察で
Ｃが粒状で固着している状態が認められなかったので均
一、層状に固着しており１このＣが無定形のものである
として、被膜の（１０００−０，１１５） ｇＸ２８．
８Ｘ１０の７ｇとした。In addition, the composition analysis and thickness measurement of this fine powder coating were performed. In the composition analysis, the amount of C measured with a CN coder was 0.115 g per 1000 g of the sample conductive fine powder, and the weight loss measured by thermogravimetric analysis was found to be 0.115 g per 1000 g of the fine powder sample.
0 g! 0.121 g and EPM
The elements detected by A were Zn, (!, and almost no elements other than 0 were observed, so it was essentially C. In the thickness measurement, observation using a scanning electron microscope showed that C was fixed in granular form. As the C was not observed to be in a uniform layer, it was assumed that the C was amorphous.
It was set to 7g of 8x10.
実施例２
平均粒径０．０３μｍ（比表面積２８．８ｍ／ｇ）の実
施例１で使用したものと同じ酸化亜鉛微粉末１０ ｇと
、同じ容量のメタン列の脂肪族炭化水素（Ｃの数１０〜
１４）とをボールミルに入れ、３０分間攪拌した。次に
、この混合物を残留している上記炭化水素を水切程度に
濾過分離した後、ステンレス鋼製オートクレーブに装入
し、窒素ガスを封入して密栓した。その後、オートクレ
ーブ内の温度を４００Ｃに上げ、その温度に３０分間保
持した。３０分後のオートクレーブ内の圧力は、２０気
圧であった。最後に、オートクレーブ内を排気して放冷
した。こうして得られた酸化亜鉛微粉末は灰白色で、平
均粒径０．０３μｍ（比表面積２７．４ ｍ ７ｇ ）
、電気伝導度０．２８Ω−１・ｃｎ−’であった。Example 2 10 g of the same zinc oxide fine powder used in Example 1 with an average particle size of 0.03 μm (specific surface area 28.8 m/g) and the same volume of methane series aliphatic hydrocarbon (number of C 10~
14) was placed in a ball mill and stirred for 30 minutes. Next, after filtering and separating the remaining hydrocarbons from this mixture to the extent of draining water, the mixture was placed in a stainless steel autoclave, which was then filled with nitrogen gas and sealed tightly. Thereafter, the temperature inside the autoclave was raised to 400C and maintained at that temperature for 30 minutes. The pressure inside the autoclave after 30 minutes was 20 atm. Finally, the autoclave was evacuated and allowed to cool. The zinc oxide fine powder thus obtained is grayish white and has an average particle size of 0.03 μm (specific surface area: 27.4 m 7 g).
, and the electrical conductivity was 0.28 Ω-1·cn-'.
又、この微粉末の被膜の組成分析と厚み測定を実施例１
と同様に行なった。そして、組成分析では被膜が実質的
にＣであり、厚み測定では均一、層状の被膜が９１ Ｋ
の厚みで固着していることを確認した。In addition, the composition analysis and thickness measurement of this fine powder coating were carried out in Example 1.
I did the same thing. Compositional analysis showed that the coating was essentially C, and thickness measurements showed that the coating was uniform and layered at 91 K.
It was confirmed that it was firmly fixed with a thickness of .
実施例３
平均粒径０，０３ μｍ （比表面積２８．８ｍ／ｇ）
の実施例１で使用したものと同じ酸化亜鉛微粉末１０ｇ
を入れた磁製ボートをプロピレン２０容量％、残部Ｎ
からなる混合ガスが３１７分の流量で流れている４５０
１：’に保持した磁製管に速かに装入し、そこで５分間
静置した。その後、磁製ボートを常温の磁製管端に速か
に移動すると同時に、プロピレンの供給を止め、Ｎ 流
量を増加することによって雰囲気をＮ に置換しながら
酸化亜鉛微粉末を急冷した。こうして得られた酸化亜鉛
微粉末は青灰色で、平均粒径０．０３５μｍ（比表面積
２７．８ｍ２／ｇ） 、１００ ｂｙ／ｍ の加圧下で
測定した電気伝導度０．５５Ω−１・薗−１であった。Example 3 Average particle size 0.03 μm (specific surface area 28.8 m/g)
10 g of the same zinc oxide fine powder used in Example 1 of
A porcelain boat containing 20% propylene by volume, the balance N
A mixed gas consisting of 450 is flowing at a flow rate of 317 minutes.
It was quickly placed into a porcelain tube maintained at 1:' and left there for 5 minutes. Thereafter, the porcelain boat was quickly moved to the end of the porcelain tube at room temperature, the supply of propylene was stopped, and the zinc oxide fine powder was rapidly cooled while replacing the atmosphere with N 2 by increasing the N 2 flow rate. The zinc oxide fine powder thus obtained has a blue-gray color, an average particle size of 0.035 μm (specific surface area 27.8 m2/g), and an electrical conductivity of 0.55 Ω-1 when measured under a pressure of 100 by/m2. It was 1.
又・この微粉末の被膜の組成分析と厚み測定を実施例１
と同様に行なった。その結果は、被膜厚みが２５ Ｒで
あった以外は実施例１と同様であった０
実施例４
平均粒径０．４μｍ（比表面積３．８ ｍ ／ｇ ）の
酸化亜鉛微粉末１０ ｇを磁製ボートに入れ、次にこの
磁製ボートをエタン３容量％、残部Ｎ からなる混合ガ
スが２１１分の流量で流れている６００Ｃに保持した磁
製管に装入し、そこで２０分間静置した。In addition, the composition analysis and thickness measurement of this fine powder coating were carried out in Example 1.
I did the same thing. The results were the same as in Example 1 except that the coating thickness was 25 R.Example 4 10 g of zinc oxide fine powder with an average particle size of 0.4 μm (specific surface area 3.8 m /g) was This porcelain boat was then placed in a porcelain tube maintained at 600C in which a gas mixture consisting of 3% ethane by volume and the balance N was flowing at a flow rate of 211 min, and left there for 20 min. did.
その後、磁製ポートを常温の磁製管端に速かに移。Then, quickly transfer the porcelain port to the end of the porcelain tube at room temperature.
動すると同時にエタンの供給を止め、Ｎ 流量を増加す
ることによって雰囲気をＮ に置換しながら゛ 酸化
亜鉛微粉末を急冷した。こうして得られた酸化亜鉛微粉
末は灰白色で、平均粒径０．７μｍ（比表面積２．２
ｍ ／ｇ ） 、電気伝導度８．５Ω−１・薗−１であ
った。なお処理前の電気伝導度は１．２Ｘ１０−６Ω−
１・川 であった。At the same time, the supply of ethane was stopped and the flow rate of N was increased to replace the atmosphere with N while rapidly cooling the fine zinc oxide powder. The zinc oxide fine powder thus obtained is grayish white in color with an average particle size of 0.7 μm (specific surface area of 2.2 μm).
m/g), and the electrical conductivity was 8.5Ω-1·Sono-1. The electrical conductivity before treatment is 1.2X10-6Ω-
1. It was a river.
また、この微粉末の被膜の組成分析と厚み測定を実施例
１と同様に行なった。その結果は、被膜厚みが６４ Ｋ
であった以外は実施例１と同様であった。In addition, the composition analysis and thickness measurement of this fine powder coating were performed in the same manner as in Example 1. The result was a film thickness of 64 K.
It was the same as Example 1 except that.
実施例５
平均粒径０．０１μｍ（比表面積８０．２ ｍ ７Ωン
の酸化チタン微粉末１０ ｇを使用した以外は、実施例
１と同様に操作した。こうして得られた酸化チタン微粉
末は青灰色で、平均粒径０．０２μｍ（比表面積５０．
２ ｍ ／ｇ ） 、電気伝導度０．１０Ω−１・薗−
１であった。なお処理前の電気伝導度Ｇ！５．０Ｘ１０
”−’Ω−１・鋸であった。Example 5 The same procedure as in Example 1 was carried out except that 10 g of titanium oxide fine powder with an average particle size of 0.01 μm (specific surface area 80.2 m and 7Ω) was used.The titanium oxide fine powder thus obtained had a blue color. Gray, average particle size 0.02 μm (specific surface area 50.
2 m/g), electrical conductivity 0.10Ω-1・Sono-
It was 1. In addition, the electrical conductivity G before treatment! 5.0X10
”-'Ω-1・It was a saw.
また、この微粉末の被膜の組成分析と厚み測定を実施例
１と同様に行なった。その結果は、被膜厚みが１６λで
あった以外は実施例１と同様であった。In addition, the composition analysis and thickness measurement of this fine powder coating were performed in the same manner as in Example 1. The results were the same as in Example 1 except that the coating thickness was 16λ.
比較例１
磁製ポートを２５００に保持した磁製管に装入し、１時
間及び１０時間静置した以外は実施例４と同様に操作し
た。こうして得られた酸化亜鉛微粉末はいずれも白色で
、いずれも平均粒径０．４μｍ（比表面積夫々３．８
ｍ ／ｇ、 ３．９ ｍ ／ｇ） 、電気伝導度夫夫０
．８Ｘ１０−’Ω−’−７７３−’、７．２Ｘ１０−’
Ω−’−ｍ−’であツタ。Comparative Example 1 The same procedure as in Example 4 was carried out, except that the tube was placed in a porcelain tube with a porcelain port held at 2500°C, and left to stand for 1 hour and 10 hours. The zinc oxide fine powders thus obtained were all white in color, with an average particle size of 0.4 μm (specific surface area of 3.8 μm, respectively).
m/g, 3.9 m/g), electrical conductivity 0
．． 8X10-'Ω-'-773-', 7.2X10-'
Ω-'-m-' and ivy.
比較例２
磁製管に流すガスをＮ ガスとした以外は、実施例４と
同様に操作した。こうして得られた酸化亜鉛微粉末は白
色で、平均粒径０．５μｍ（比表面積３．１ ｍ ／ｇ
） 、電気伝導度１．２Ｘ１０−６Ω−１・潴−１であ
った。Comparative Example 2 The same procedure as in Example 4 was carried out except that N 2 gas was used as the gas flowing through the porcelain tube. The zinc oxide fine powder thus obtained is white and has an average particle size of 0.5 μm (specific surface area of 3.1 m/g).
), and the electrical conductivity was 1.2×10 −6 Ω−1·tan−1.
比較例３
磁製管に流すガスをＮ ガスとし、５時間静置した以外
は実施例４と同様に操作した。こうして得られた酸化亜
鉛微粉末は白色で、平均粒径０．７μｍ（比表面積２．
３ｍ／ｇ）、電気伝導度３．２Ｘ１０−６Ω−１・偏−
１であった。Comparative Example 3 The same procedure as in Example 4 was carried out except that N 2 gas was used as the gas flowing through the porcelain tube and the tube was allowed to stand for 5 hours. The zinc oxide fine powder thus obtained is white in color and has an average particle size of 0.7 μm (specific surface area of 2.0 μm).
3m/g), electrical conductivity 3.2X10-6Ω-1, polarized
It was 1.
なお、前記比較例１．２．３で得られた微粉末の被膜の
組成分析を実施例１と同様に行なった。The composition analysis of the fine powder coating obtained in Comparative Example 1.2.3 was conducted in the same manner as in Example 1.
その結果、いずれの比較例もＣが検出されなかった０
〔発明の効果〕
本発明は導電性が非常に優れ、平均粒子径が数μｍ以下
もしくは０．１μｍ以下の微粉末を提供することができ
るものであり、その工業的価値は大さい。As a result, no C was detected in any of the comparative examples. [Effects of the Invention] The present invention is capable of providing fine powder with extremely excellent conductivity and an average particle diameter of several μm or less or 0.1 μm or less. It can be done, and its industrial value is great.
Claims (1)
的に炭素からなる被覆層が１〜２００Åの層厚で形成さ
れてなる導電性微粉末。(1) Conductive fine powder having an average particle diameter of 5 μm or less and having a coating layer substantially made of carbon formed on its surface with a layer thickness of 1 to 200 Å.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11389887A JPS63279502A (en) | 1987-05-11 | 1987-05-11 | Conductive fine powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11389887A JPS63279502A (en) | 1987-05-11 | 1987-05-11 | Conductive fine powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63279502A true JPS63279502A (en) | 1988-11-16 |
Family
ID=14623917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11389887A Pending JPS63279502A (en) | 1987-05-11 | 1987-05-11 | Conductive fine powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63279502A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0372003A (en) * | 1989-08-11 | 1991-03-27 | Central Glass Co Ltd | Pressurized electric conductive metal powder and manufacture thereof |
| JP2008230915A (en) * | 2007-03-20 | 2008-10-02 | Mitsui Mining & Smelting Co Ltd | Electrically conductive zinc oxide particle and method for manufacturing the same |
-
1987
- 1987-05-11 JP JP11389887A patent/JPS63279502A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0372003A (en) * | 1989-08-11 | 1991-03-27 | Central Glass Co Ltd | Pressurized electric conductive metal powder and manufacture thereof |
| JP2008230915A (en) * | 2007-03-20 | 2008-10-02 | Mitsui Mining & Smelting Co Ltd | Electrically conductive zinc oxide particle and method for manufacturing the same |
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