CN101524760A - Method for preparing small-diameter sheet copper powder - Google Patents
Method for preparing small-diameter sheet copper powder Download PDFInfo
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- CN101524760A CN101524760A CN200910082505A CN200910082505A CN101524760A CN 101524760 A CN101524760 A CN 101524760A CN 200910082505 A CN200910082505 A CN 200910082505A CN 200910082505 A CN200910082505 A CN 200910082505A CN 101524760 A CN101524760 A CN 101524760A
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Abstract
The invention discloses a method for preparing small-diameter sheet copper powder, relating to a method for obtaining sheet copper powder with a diameter less than 20mum. The method for preparing small-diameter sheet copper powder is characterized in that spherical copper powder of 1-2mum is used as raw material of spherical copper powder; ball milling is carried out on the spherical copper powder to obtain sheet copper powder of small diameter. The sheet copper powder prepared by the method has a diameter less than 20mum, and the method for preparing small-diameter sheet copper powder is high in efficiency and easy to realize commercial process.
Description
Technical field
A kind of method for preparing small-diameter sheet copper powder relates to the method for a kind of footpath less than 20 μ m flake coppers.
Background technology
Copper powder has been widely used as conductive paste with its good electrical conductivity raw material, particularly flake copper are big owing to its specific area, and the contact area between powder also increases, thereby resistance is reduced.Along with the miniaturization of electronic component, its conductive layer also tends to thin layerization, and in order to reach this purpose, the use of small pieces footpath flake powder is very necessary, and market is very urgent to the demand of small-diameter sheet copper powder.Seek a kind of efficient height, be easy to realize that the preparation method of small-diameter sheet copper powder of suitability for industrialized production is more urgent.
Summary of the invention
Purpose of the present invention is exactly the deficiency at above-mentioned existing existence, provides a kind of slice footpath of effectively preparing less than 20 μ m, the efficient height, is easy to realize suitability for industrialized production.
The method for preparing small-diameter sheet copper powder that the objective of the invention is to be achieved through the following technical solutions.
A kind of method for preparing small-diameter sheet copper powder is characterized in that its preparation process is that spherical copper powder is that the spherical copper powder of 1～2 μ m is a raw material, spherical copper powder carried out ball milling obtain small-diameter sheet copper powder.
A kind of method for preparing small-diameter sheet copper powder of the present invention, the mill Jie ball that it is characterized in that described mechanical milling process are zirconia mill Jie ball, and diameter is 1～2mm, and the ball material weight ratio of mill Jie's ball and spherical copper powder is 20: 1.
A kind of method for preparing small-diameter sheet copper powder of the present invention is characterized in that the grinding aid that is incorporated as absolute ethyl alcohol or acetone of described mechanical milling process, and the weight ratio of grinding aid and spherical copper powder is 1: 4～1: 3.
A kind of method for preparing small-diameter sheet copper powder of the present invention, what it is characterized in that described mechanical milling process is incorporated as oleic acid or stearic dispersant, and the weight ratio of dispersant and spherical copper powder is 1: 10～1: 20.
A kind of method for preparing small-diameter sheet copper powder of the present invention is characterized in that described mechanical milling process adopts agitated ball mill, and ball milling speed is 300～500rpm, and the ball milling time is 4～6h, and the ball milling temperature is 5～10 ℃.
The flake copper sheet footpath of method of the present invention preparation is less than 20 μ m, and this method efficient height, is easy to realize suitability for industrialized production.
Description of drawings
The stereoscan photograph of the flake copper that Fig. 1 makes for embodiment 1, multiplication factor are 1000 times.
The stereoscan photograph of the flake copper that Fig. 2 makes for embodiment 2, multiplication factor are 300 times.
The stereoscan photograph of the flake copper that Fig. 3 makes for embodiment 3, multiplication factor are 1000 times.
The specific embodiment
A kind of method for preparing small-diameter sheet copper powder, its preparation process is that mill Jie ball, grinding aid, dispersant are added ball grinder successively, under stirring at low speed, add spherical copper powder then, flake copper slurries filtration, vacuum drying that ball milling after a period of time makes ball milling.Its operating procedure comprises:
(1) will grind Jie's ball and add ball grinder, mill Jie ball material is a zirconia, and diameter is 1～2mm, and the ball material weight ratio of mill Jie's ball and spherical copper powder is 20: 1.
(2) will be that 1: 4～1: 3 grinding aid adds ball grinder with the weight ratio of spherical copper powder, used grinding aid be absolute ethyl alcohol or acetone.
(3) dispersant is added ball grinder, dispersant is oleic acid or stearic acid, and the weight ratio of dispersant and spherical copper powder is 1: 10～1: 20.
(4) the spherical copper powder 20～50g with 1～2 μ m adds ball grinder under stirring at low speed.
(5) ball milling speed is controlled to be 300～500rpm, the ball milling time is 4～6h, and the ball milling temperature is 5～10 ℃.
(6) the flake copper slurries filtration final vacuum drying that ball milling is made obtains flake copper.
Embodiment 1
With the 300mL diameter is that zirconia mill Jie ball, 100mL absolute ethyl alcohol grinding aid, the 0.1g stearic acid dispersant of 1mm adds ball grinder successively, under stirring at low speed, add the 20g spherical copper powder then, ball milling 4h under the rotating speed 300rpm, the flake copper slurries filtration, the vacuum drying that then ball milling are made obtain flake copper.
Embodiment 2
With the 350mL diameter is that zirconia mill Jie ball, 150mL absolute ethyl alcohol grinding aid, the 0.3g stearic acid dispersant of 2mm adds ball grinder successively, under stirring at low speed, add the 40g spherical copper powder then, ball milling 5h under the rotating speed 400rpm, the flake copper slurries filtration, the vacuum drying that then ball milling are made obtain flake copper.
Embodiment 3
With the 400mL diameter is that zirconia mill Jie ball, 150mL acetone grinding aid, the 0.2g oleic acid dispersant of 2mm adds ball grinder successively, under stirring at low speed, add the 50g spherical copper powder then, ball milling 6h under the rotating speed 500rpm, the flake copper slurries filtration, the vacuum drying that then ball milling are made obtain flake copper.
Claims (5)
1. method for preparing small-diameter sheet copper powder is characterized in that its preparation process is that spherical copper powder is that the spherical copper powder of 1～2 μ m is a raw material, spherical copper powder carried out ball milling obtain small-diameter sheet copper powder.
2. a kind of method for preparing small-diameter sheet copper powder according to claim 1, the mill Jie ball that it is characterized in that described mechanical milling process are zirconia mill Jie ball, and diameter is 1～2mm, and the ball material weight ratio of mill Jie's ball and spherical copper powder is 20: 1.
3. a kind of method for preparing small-diameter sheet copper powder according to claim 1 is characterized in that the grinding aid that is incorporated as absolute ethyl alcohol or acetone of described mechanical milling process, and the weight ratio of grinding aid and spherical copper powder is 1: 4～1: 3.
4. a kind of method for preparing small-diameter sheet copper powder according to claim 1, what it is characterized in that described mechanical milling process is incorporated as oleic acid or stearic dispersant, and the weight ratio of dispersant and spherical copper powder is 1: 10～1: 20.
5. a kind of method for preparing small-diameter sheet copper powder according to claim 1 is characterized in that described mechanical milling process adopts agitated ball mill, and ball milling speed is 300～500rpm, and the ball milling time is 4～6h, and the ball milling temperature is 5～10 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910082505A CN101524760A (en) | 2009-04-23 | 2009-04-23 | Method for preparing small-diameter sheet copper powder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910082505A CN101524760A (en) | 2009-04-23 | 2009-04-23 | Method for preparing small-diameter sheet copper powder |
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| CN101524760A true CN101524760A (en) | 2009-09-09 |
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| CN200910082505A Pending CN101524760A (en) | 2009-04-23 | 2009-04-23 | Method for preparing small-diameter sheet copper powder |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102935369A (en) * | 2012-11-30 | 2013-02-20 | 湖南省天心博力科技有限公司 | Preparation process of flaky pure copper powder catalyst |
| CN103949649A (en) * | 2014-05-13 | 2014-07-30 | 中南大学 | Method for preparing flaky copper in aqueous system |
| CN104722751A (en) * | 2013-12-20 | 2015-06-24 | 有研亿金新材料股份有限公司 | Flaky platinum powder, and preparation method and application thereof |
| CN105435790A (en) * | 2015-11-23 | 2016-03-30 | 兰州蓝星清洗有限公司 | Copper-based catalyst for organosilicon production and preparation method of copper-based catalyst |
| CN110405199A (en) * | 2019-08-30 | 2019-11-05 | 朱庭旭 | Flake zinc powder and its semi-automatic preparation method and application |
| CN114854305A (en) * | 2022-04-13 | 2022-08-05 | 华南理工大学 | Ion-doped titanium dioxide/copper sulfide composite transparent heat-insulating coating and preparation method and application thereof |
| CN115921850A (en) * | 2022-11-29 | 2023-04-07 | 西北有色金属研究院 | Preparation method of high-strength high-conductivity non-uniform grain structure aluminum oxide dispersion strengthened copper |
| CN116021010A (en) * | 2023-02-01 | 2023-04-28 | 苏州星翰新材料科技有限公司 | Preparation method of flaky copper powder |
-
2009
- 2009-04-23 CN CN200910082505A patent/CN101524760A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102935369A (en) * | 2012-11-30 | 2013-02-20 | 湖南省天心博力科技有限公司 | Preparation process of flaky pure copper powder catalyst |
| CN102935369B (en) * | 2012-11-30 | 2014-07-09 | 湖南省天心博力科技有限公司 | Preparation process of flaky pure copper powder catalyst |
| CN104722751A (en) * | 2013-12-20 | 2015-06-24 | 有研亿金新材料股份有限公司 | Flaky platinum powder, and preparation method and application thereof |
| CN103949649A (en) * | 2014-05-13 | 2014-07-30 | 中南大学 | Method for preparing flaky copper in aqueous system |
| CN105435790A (en) * | 2015-11-23 | 2016-03-30 | 兰州蓝星清洗有限公司 | Copper-based catalyst for organosilicon production and preparation method of copper-based catalyst |
| CN110405199A (en) * | 2019-08-30 | 2019-11-05 | 朱庭旭 | Flake zinc powder and its semi-automatic preparation method and application |
| CN110405199B (en) * | 2019-08-30 | 2021-11-02 | 朱庭旭 | Scale-like zinc powder and semi-automatic preparation method and application thereof |
| CN114854305A (en) * | 2022-04-13 | 2022-08-05 | 华南理工大学 | Ion-doped titanium dioxide/copper sulfide composite transparent heat-insulating coating and preparation method and application thereof |
| CN115921850A (en) * | 2022-11-29 | 2023-04-07 | 西北有色金属研究院 | Preparation method of high-strength high-conductivity non-uniform grain structure aluminum oxide dispersion strengthened copper |
| CN116021010A (en) * | 2023-02-01 | 2023-04-28 | 苏州星翰新材料科技有限公司 | Preparation method of flaky copper powder |
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Open date: 20090909 |