CN102554241A - Method for preparing foam conglomerated copper powder - Google Patents
Method for preparing foam conglomerated copper powder Download PDFInfo
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- CN102554241A CN102554241A CN201210007548XA CN201210007548A CN102554241A CN 102554241 A CN102554241 A CN 102554241A CN 201210007548X A CN201210007548X A CN 201210007548XA CN 201210007548 A CN201210007548 A CN 201210007548A CN 102554241 A CN102554241 A CN 102554241A
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- powder
- copper powder
- foam
- conglomerated
- groupization
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Abstract
The invention discloses a method for preparing foam conglomerated copper powder, which includes the steps: mixing fine copper powder with foam materials according to the weight ratio of 100:5; sintering the mixture at the temperature of about 500 DEG C so that a sintered powder block has obvious pores; and breaking the powder block into powder of conglomerated powder structures and leading large pores remaining after volatilization of the foam materials to remain inside the powder of each conglomerated powder structure. Owing to the foam pores in the structures, a finished heat pipe has higher porosity, original capillary force is kept, the water containing space of the heat pipe is greatly increased, and the maximum heat transfer quantity of the heat pipe is increased.
Description
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Technical field
The present invention is a kind of new copper powder structure, particularly about a kind of group's copper powder structure of good serviceability.
Background technology
Along with micro computer industry (notebook computer, panel computer) product structure towards more compact and processor more towards at a high speed, high-power direction develops.Require its product when structure is thin, little, the radiator in the product (and heat pipe) can be taken away more heat.And frivolous product structure has determined thickness, diameter of heat pipe etc., and for very thin heat pipe, its powder thickness requirement that is used to set up capillary structure is thin more, and in such cases, thinner copper powder can better be filled in the heat pipe.
And fill very thin copper powder in the heat pipe, its finished product capillary force is to be greatly improved, but a very big defective is also arranged, because superfine block hole after powder sintered is very low, has had a strong impact on the maximum heat biography amount of finished product heat pipe.
Summary of the invention
The objective of the invention is to overcome the above problem that prior art exists, a kind of foam groupization copper powder production method is provided.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention realizes through following technical scheme:
Foam groupization copper powder production method may further comprise the steps:
Step 1, with thin copper powder and expanded material mixed according to weight ratio 100:5;
Step 2, with the described mixture of step 1 through 500 the degree about the temperature sintering, the powder agglomates behind oversintering has tangible hole;
Step 3, the described powder agglomates of step 2 is smashed, the powder after smashing is a change mealy structure, and all there is the residual big hole in expanded material volatilization back each groupization structure powder inside.
Further, the thin copper powder size scope in the said step 1 is more than-120 orders.
Further, the expanded material in the said step 1 can be paraffin, stearic acid etc., and its particle diameter is more than 200 orders.
The invention has the beneficial effects as follows:
The present invention has improved the maximum heat biography amount of heat pipe because the foaming hole in its structure so the heat pipe finished product of making has higher porosity, when keeping original capillary force, has improved the water-containing space of heat pipe again greatly.
Above-mentioned explanation only is the general introduction of technical scheme of the present invention, understands technological means of the present invention in order can more to know, and can implement according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. specify as after.The specific embodiment of the present invention is provided by following examples and accompanying drawing thereof in detail.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
The micro-structural representation down of Fig. 1 finished product of the present invention.
The specific embodiment
Foam groupization copper powder production method may further comprise the steps:
Step 1, with thin copper powder and expanded material mixed according to weight ratio 100:5;
Step 2, with the described mixture of step 1 through 500 the degree about the temperature sintering, the powder agglomates behind oversintering has tangible hole;
Step 3, the described powder agglomates of step 2 is smashed, the powder after smashing is a change mealy structure, and all there is the residual big hole in expanded material volatilization back each groupization structure powder inside.
Further, the thin copper powder size scope in the said step 1 is more than-120 orders.
Further, the expanded material in the said step 1 can be paraffin, stearic acid etc., and its particle diameter is more than 200 orders.
With reference to shown in Figure 1, this type powder is compared with traditional fine powder groupization powder, on the basis that keeps original high capillary force, has improved whole porosity greatly, and when being used as the finished product heat pipe, the heat that has improved conduit passes usefulness.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. foam groupization copper powder production method is characterized in that, may further comprise the steps:
Step 1, with thin copper powder and expanded material mixed according to weight ratio 100:5;
Step 2, with the described mixture of step 1 through 500 the degree about the temperature sintering, the powder agglomates behind oversintering has tangible hole;
Step 3, the described powder agglomates of step 2 is smashed, the powder after smashing is a change mealy structure, and all there is the residual big hole in expanded material volatilization back each groupization structure powder inside.
2. foam groupization copper powder production method according to claim 1 is characterized in that: the thin copper powder size scope in the said step 1 is more than-120 orders.
3. foam groupization copper powder production method according to claim 1, it is characterized in that: the expanded material in the said step 1 can be paraffin, stearic acid etc., and its particle diameter is more than 200 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210007548XA CN102554241A (en) | 2012-01-12 | 2012-01-12 | Method for preparing foam conglomerated copper powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210007548XA CN102554241A (en) | 2012-01-12 | 2012-01-12 | Method for preparing foam conglomerated copper powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102554241A true CN102554241A (en) | 2012-07-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210007548XA Pending CN102554241A (en) | 2012-01-12 | 2012-01-12 | Method for preparing foam conglomerated copper powder |
Country Status (1)
| Country | Link |
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| CN (1) | CN102554241A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106180745A (en) * | 2016-08-31 | 2016-12-07 | 昆山德泰新材料科技有限公司 | A kind of foam copper powder and preparation method thereof |
| CN106323062A (en) * | 2016-08-31 | 2017-01-11 | 昆山德泰新材料科技有限公司 | Heat pipe and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003123537A (en) * | 2001-08-07 | 2003-04-25 | Mitsui Mining & Smelting Co Ltd | Mixed copper powder, method of manufacturing the mixed copper powder, copper paste using the mixed copper powder and printed circuit board using the copper paste |
| JP2004027246A (en) * | 2002-06-21 | 2004-01-29 | Fukuda Metal Foil & Powder Co Ltd | Copper powder for conductive paste, and its manufacturing method |
| CN101300095A (en) * | 2005-10-07 | 2008-11-05 | 维尔英科有限公司 | High porosity metal biporous foam |
| CN101590524A (en) * | 2009-06-23 | 2009-12-02 | 诸城市同翔机械有限公司 | The material prescription of high-strength powder metallurgy valve guide pipe |
| CN101704103A (en) * | 2009-12-22 | 2010-05-12 | 元磁新型材料(苏州)有限公司 | Compound copper powder for manufacturing capillary structure of inner wall of heat pipe |
-
2012
- 2012-01-12 CN CN201210007548XA patent/CN102554241A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003123537A (en) * | 2001-08-07 | 2003-04-25 | Mitsui Mining & Smelting Co Ltd | Mixed copper powder, method of manufacturing the mixed copper powder, copper paste using the mixed copper powder and printed circuit board using the copper paste |
| JP2004027246A (en) * | 2002-06-21 | 2004-01-29 | Fukuda Metal Foil & Powder Co Ltd | Copper powder for conductive paste, and its manufacturing method |
| CN101300095A (en) * | 2005-10-07 | 2008-11-05 | 维尔英科有限公司 | High porosity metal biporous foam |
| CN101590524A (en) * | 2009-06-23 | 2009-12-02 | 诸城市同翔机械有限公司 | The material prescription of high-strength powder metallurgy valve guide pipe |
| CN101704103A (en) * | 2009-12-22 | 2010-05-12 | 元磁新型材料(苏州)有限公司 | Compound copper powder for manufacturing capillary structure of inner wall of heat pipe |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106180745A (en) * | 2016-08-31 | 2016-12-07 | 昆山德泰新材料科技有限公司 | A kind of foam copper powder and preparation method thereof |
| CN106323062A (en) * | 2016-08-31 | 2017-01-11 | 昆山德泰新材料科技有限公司 | Heat pipe and preparation method thereof |
| WO2018041032A1 (en) * | 2016-08-31 | 2018-03-08 | 昆山德泰新材料科技有限公司 | Copper foam powder and manufacturing method thereof |
| CN106180745B (en) * | 2016-08-31 | 2018-07-27 | 昆山德泰新材料科技有限公司 | A kind of foam copper powder and preparation method thereof |
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| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhu Shengli Inventor before: Zhou Shengguo |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHOU SHENGGUO TO: ZHU SHENGLI |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120711 |
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| WD01 | Invention patent application deemed withdrawn after publication |