JPS6277406A - Production of fine copper particle - Google Patents
Production of fine copper particleInfo
- Publication number
- JPS6277406A JPS6277406A JP21560985A JP21560985A JPS6277406A JP S6277406 A JPS6277406 A JP S6277406A JP 21560985 A JP21560985 A JP 21560985A JP 21560985 A JP21560985 A JP 21560985A JP S6277406 A JPS6277406 A JP S6277406A
- Authority
- JP
- Japan
- Prior art keywords
- particle size
- soln
- hydrazine
- size distribution
- copper
- 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
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は微細な銅微粒子の製造方法に関するものである
。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for producing fine copper particles.
（従来技術とその問題点）
従来、銅微粒子の製造方法としては、還元剤としてヒド
ラジンを用いて硫酸銅水溶液を還元する方法が用いられ
てきた。ところが、この方法では析出した微粒子同士が
引き寄せ合って凝集した粒度分布の幅の広い銅粒子しか
得られないという欠点を有していた。(Prior art and its problems) Conventionally, as a method for producing copper fine particles, a method has been used in which a copper sulfate aqueous solution is reduced using hydrazine as a reducing agent. However, this method has the drawback that only copper particles with a wide particle size distribution in which the precipitated fine particles are attracted to each other and aggregated are obtained.
（発明の目的）
本発明は上記の欠点を解消せんがためになされたもので
あり、分散した粒度分布の幅の狭い微細な銅粒子の製造
方法を提供せんとするものである。(Objective of the Invention) The present invention has been made to solve the above-mentioned drawbacks, and aims to provide a method for producing fine copper particles having a narrow dispersed particle size distribution.
（発明の構成）
本発明は還元剤としてヒドラジンを用いて硫酸銅水溶液
を還元して銅微粒子を製造する方法において、反応溶液
中に保護コロイドを添加することによって単分散した銅
微粒子を得ることを特徴とするものである。(Structure of the Invention) The present invention provides a method for producing fine copper particles by reducing an aqueous solution of copper sulfate using hydrazine as a reducing agent, in which monodispersed fine copper particles are obtained by adding a protective colloid to the reaction solution. This is a characteristic feature.
而して本発明の製造方法において、反応溶液中に保護コ
ロイドを添加する理由は、硫酸銅水溶液を還元すること
によって水溶液中に析出した銅微粒子が凝集しないで単
分散状態を保つようにするためである。In the production method of the present invention, the reason why a protective colloid is added to the reaction solution is to prevent the copper fine particles precipitated in the aqueous solution by reducing the copper sulfate aqueous solution from agglomerating and to maintain a monodisperse state. It is.
本発明において反応液中に添加する保護コロイドとして
は、ゼラチン、アラビアゴム、アルブミン、プロタルピ
ン酸、リサルピン酸等である。In the present invention, protective colloids added to the reaction solution include gelatin, gum arabic, albumin, protalpic acid, resalpic acid, and the like.
ここで本発明の実施例について説明する。Examples of the present invention will now be described.
（実施例１）
ヒドラジンヒトラード ＣＮｔＨａ ・Ｈ２Ｏ）１００
ｍｅに保ｇ！コロイドアラビアゴム（１ｇ／ １００ｍ
１ ）を３０ｍ１添加して、ビーカー中で攪拌しなが
ら３０℃に保っておく。また、別のビーカーで硫酸銅（
Ｃｕ Ｓ ０４−５ ＨｔＯ） １００ｇを水１，０
００ｍｊ！溶解し硫酸銅水溶液とし、これを先のヒドラ
ジン生アラビアゴム溶液中に徐々に添加すると暗褐色の
沈澱物が生成する。得られた銅微粒子はデカンテーショ
ンにより充分に水で洗浄して、粒度分布測定及び電子顕
微鏡観察を行った。その結果このｗＩ微粒子は平均粒径
１．５μｍで粒度分布は図のように幅の狭いもので、形
状はほぼ球形で分散したものであった。(Example 1) Hydrazine Hitlerde CNtHa ・H2O) 100
Keep me! Colloidal gum arabic (1g/100m
Add 30ml of 1) and keep at 30°C while stirring in a beaker. Also, in a separate beaker, add copper sulfate (
Cu S 04-5 HtO) 100g water 1.0
00mj! When dissolved to form an aqueous copper sulfate solution and gradually added to the hydrazine raw gum arabic solution, a dark brown precipitate is formed. The obtained copper fine particles were thoroughly washed with water by decantation, and subjected to particle size distribution measurement and electron microscope observation. As a result, the wI fine particles had an average particle diameter of 1.5 μm, a narrow particle size distribution as shown in the figure, and a substantially spherical and dispersed shape.
（実施例２）
塩酸ヒドラジン（ＮｚＨ４・２Ｈｃ１）５００ｍＪに保
護コロイドゼラチン（１ｇ／ １００ｍ＆）を２００ｍ
１添加してビーカー中で攪拌しながら３０℃に保ってお
く。また別のビーカーで硫酸銅（ＣｕＳ０４ ・５Ｈ２
０）５００ｇを水５．ＯＱＯｍｊ！に溶解し硫酸銅水滓
液とし、これを先のヒドラジン＋ゼラチン溶液中に徐々
に添加すると暗褐色の沈殿物が生成する。得られた銅微
粒子はデカンテーションにより充分に水で洗浄して、粒
度分布測定及び電子Ｂ徽鏡観察を行った。その結果この
銅微粒子は平均粒径２．１μｍで粒度分布は図のように
幅の狭いもので、形状はほぼ球形で分散したものであっ
た。(Example 2) Add 200 m of protective colloid gelatin (1 g/100 m&) to 500 mJ of hydrazine hydrochloride (NzH4.2Hc1)
1 and keep it at 30°C while stirring in a beaker. In another beaker, copper sulfate (CuS04 ・5H2
0) 500g of water 5. OQOmj! When dissolved in copper sulfate to form an aqueous solution of copper sulfate and gradually added to the above hydrazine + gelatin solution, a dark brown precipitate is formed. The obtained copper fine particles were thoroughly washed with water by decantation, and subjected to particle size distribution measurement and electronic B-viewing mirror observation. As a result, the copper fine particles had an average particle size of 2.1 μm, a narrow particle size distribution as shown in the figure, and a substantially spherical and dispersed shape.
（従来例）
ヒドラジンヒトラード（Ｎ ２ Ｈ４・Ｈｚ Ｏ） １
００ｍ１をビーカー中で攪拌しながら３０℃に保ってお
く。また別のビーカーで硫酸銅（Ｃｕ Ｓ Ｏ，・５Ｈ
ｚＯ）１００ｇを水１，０００ｍｊ！に溶解し硫酸銅水
溶液とし、これを先のヒドラジン溶液中に徐々に添加す
ると暗褐色の沈殿物が生成する。得られた銅微粒子はデ
カンテーションにより充分に水で洗浄して、粒度分布測
定及び電子顕微鏡観察を行った。その結果この銅粒子は
平均粒径９．２μｍで粒度分布は図のように幅の広い凝
集したものであった。(Conventional example) Hydrazine Hitlerd (N 2 H4・Hz O) 1
00ml is kept at 30°C while stirring in a beaker. In another beaker, add copper sulfate (Cu SO, 5H
zO) 100g to 1,000mj of water! When the copper sulfate solution is gradually added to the hydrazine solution, a dark brown precipitate is formed. The obtained copper fine particles were thoroughly washed with water by decantation, and subjected to particle size distribution measurement and electron microscope observation. As a result, the average particle size of the copper particles was 9.2 μm, and the particle size distribution was agglomerated with a wide width as shown in the figure.
（発明の効果）
上記の説明で明らかなように本発明の製造方法は、還元
剤としてヒドラジンを用いて硫酸銅水溶液を還元して銅
微粒子を製造する方法において、反応溶液中に保護コロ
イドを添加することにより、従来法では得られなかった
単分散した、粒度分布の狭い微細な銅粒子を製造できる
ので、従来の製造法にとって代わることのできる画期的
なものと言える。(Effects of the Invention) As is clear from the above explanation, the production method of the present invention involves adding a protective colloid to the reaction solution in a method of producing copper fine particles by reducing an aqueous copper sulfate solution using hydrazine as a reducing agent. By doing so, it is possible to produce fine, monodispersed copper particles with a narrow particle size distribution that could not be obtained using conventional methods, so it can be said to be an epoch-making method that can replace conventional production methods.
図は光透過式粒度分布測定装置を用いて各銅微粒子の粒
度分布を測定した結果を横軸に粒径、縦軸に累積パーセ
ントを取って示したものである。
出願人 田中貴金属工業株式会社
牲径快ｍ）The figure shows the results of measuring the particle size distribution of each copper fine particle using a light transmission type particle size distribution measuring device, with the horizontal axis representing the particle size and the vertical axis representing the cumulative percentage. Applicant: Tanaka Kikinzoku Kogyo Co., Ltd.
Claims (1)
て銅微粒子を製造する方法において、反応溶液中に保護
コロイドを添加することによって単分散した銅微粒子を
得ることを特徴とする銅微粒子の製造方法。A method for producing copper microparticles by reducing an aqueous copper sulfate solution using hydrazine as a reducing agent, the method comprising obtaining monodispersed copper microparticles by adding a protective colloid to the reaction solution. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21560985A JPS6277406A (en) | 1985-09-28 | 1985-09-28 | Production of fine copper particle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21560985A JPS6277406A (en) | 1985-09-28 | 1985-09-28 | Production of fine copper particle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6277406A true JPS6277406A (en) | 1987-04-09 |
Family
ID=16675255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21560985A Pending JPS6277406A (en) | 1985-09-28 | 1985-09-28 | Production of fine copper particle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6277406A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005053885A1 (en) * | 2003-12-01 | 2005-06-16 | Kojima Chemicals Co., Ltd. | Process for producing metal micropowder having particle diameter uniformalized |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5743125A (en) * | 1980-09-20 | 1982-03-11 | Taada:Kk | Apparatus for confirming stop position of cock of gas burner |
| JPS5743126A (en) * | 1980-07-28 | 1982-03-11 | Miller Harry C | Portable gas hand torch |
| JPS59116303A (en) * | 1982-12-22 | 1984-07-05 | Shoei Kagaku Kogyo Kk | Manufacture of fine copper powder |
-
1985
- 1985-09-28 JP JP21560985A patent/JPS6277406A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5743126A (en) * | 1980-07-28 | 1982-03-11 | Miller Harry C | Portable gas hand torch |
| JPS5743125A (en) * | 1980-09-20 | 1982-03-11 | Taada:Kk | Apparatus for confirming stop position of cock of gas burner |
| JPS59116303A (en) * | 1982-12-22 | 1984-07-05 | Shoei Kagaku Kogyo Kk | Manufacture of fine copper powder |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005053885A1 (en) * | 2003-12-01 | 2005-06-16 | Kojima Chemicals Co., Ltd. | Process for producing metal micropowder having particle diameter uniformalized |
| JPWO2005053885A1 (en) * | 2003-12-01 | 2007-06-28 | 小島化学薬品株式会社 | Method for producing fine metal powder with uniform particle size |
| JP4861701B2 (en) * | 2003-12-01 | 2012-01-25 | 小島化学薬品株式会社 | Method for producing fine metal powder with uniform particle size |
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