CN101619426A - Preparation method of carbon nanotube reinforced copper-based composite material - Google Patents
Preparation method of carbon nanotube reinforced copper-based composite material Download PDFInfo
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- CN101619426A CN101619426A CN200910017222A CN200910017222A CN101619426A CN 101619426 A CN101619426 A CN 101619426A CN 200910017222 A CN200910017222 A CN 200910017222A CN 200910017222 A CN200910017222 A CN 200910017222A CN 101619426 A CN101619426 A CN 101619426A
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Abstract
The invention provides a preparation method of a carbon nanotube reinforced copper-based composite material, which is characterized by adopting the following steps: (1) utilizing mechanical ball-milling method to fracture carbon nanotubes into required carbon nanowhiskers, then pickling and drying the carbon nanowhiskers; (2) preparing evenly mixed composite powder of carbon nanowhiskers and copper powder; and (3) preparing large blocks of carbon nanowhiskers reinforced copper composite material. By carrying out ball-milling and pickling pretreatment on carbon nanotubes, the method obtains carbon nanowhiskers with good topogram, and carbon nanowhiskers and copper powder are mixed for ball milling, thereby effectively solving the problems of uniform distribution of carbon nanotubes in copper powder and the poor interface combination between carbon nanotubes and metallic matrix and other problems, in addition, the obtained carbon nanowhiskers reinforced copper composite material has the advantages of good mechanical property and conductive property, the process is simple, and the method is easy to achieve mass production.
Description
Technical field
The invention provides a kind of preparation method of carbon nanotube reinforced copper-base composite material, belong to the preparing technical field of nano composite material.
Background technology
Since carbon nanotube in 1991 was found, premium propertiess such as high strength that this material had and high specific conductivity and thermal conductivity, low thermal coefficient of expansion had caused Materials science worker's attention very soon and have become a research focus.When the preparation technology of carbon nanotube and aspect of performance are studied, utilize the premium properties of carbon nanotube to prepare the attention that problems of composite has also caused material educational circles very soon.Carbon nanotube is at first being obtained remarkable progress aspect the enhancing polymer matrix composites.And aspect the preparation metal-base composites, though some research reports are also arranged, but yet be faced with very big difficulty simultaneously, it is serious that this main difficulty wherein is that carbon nanotube has very big specific surface area and specific surface energy thereby agglomeration as other nano material, is difficult in homodisperse in the metallic matrix.On the other hand, the surfactivity of carbon nanotube is lower, poor with the wettability of metallic matrix, and this has caused it to combine relatively poor with interface between the metallic matrix.Can therefore, even carbon nanotube is dispersed in the metal be the key of preparation matrix material.For addressing this problem, some researchs are devoted to the top layer of carbon nanotube is carried out preparing carbon nanotube/metal composite powder after metallic cover and the surface modification in solution.These preparation methods' subject matter is, need compare carbon nanotube and handle so make preparation technology's difficulty complicated early stage.
Summary of the invention
The object of the present invention is to provide a kind of preparation method that can overcome above-mentioned defective, the simple carbon nanotube reinforced copper-base composite material of technology.Its technical scheme is:
A kind of preparation method of carbon nanotube reinforced copper-base composite material is characterized in that adopting following steps: (1) adopts the mechanical ball milling method that carbon nanotube is fragmented into needed carbon nano-crystal palpus, and must carry out pickling, oven dry to carbon nano-crystal; (2) carbon nano-crystal that mixes of preparation must with the composite powder of copper powder; (3) preparation bulk carbon nano-crystal must strengthen carbon/carbon-copper composite material.
The preparation method of described carbon nanotube reinforced copper-base composite material, in the step (1), adopt agate ball and agate spherical tank, with 200～400 rev/mins rotating speed ball millings 30～60 minutes, making carbon nanotube fragment into needed carbon nano-crystal must, must carry out pickling with hydrochloric acid to carbon nano-crystal again, then oven dry.
The preparation method of described carbon nanotube reinforced copper-base composite material, in the step (2), adopt agate ball and agate spherical tank, carbon nano-crystal after the pickling oven dry that step (1) is obtained with 200～400 rev/mins rotating speeds must with copper powder ball milling 30～60 minutes, make the carbon nano-crystal that mixes must with the composite powder of copper powder, wherein carbon nano-crystal must the volume content in composite powder be 1～5%.
The preparation method of described carbon nanotube reinforced copper-base composite material, in the step (3), hot pressing sintering method can make the bulk carbon nano-crystal must strengthen carbon/carbon-copper composite material, and wherein sintering temperature is at 850～1050 ℃, and sintering pressure is at 10～40MPa.
The present invention compared with prior art; by ball milling and pickling pre-treatment to carbon nanotube; having obtained the good carbon nano-crystal of pattern must; and with carbon nano-crystal must with the further mixing and ball milling of copper powder; solved effectively carbon nanotube in copper powder the uniform distribution problem and combine problems such as relatively poor with interface between the metallic matrix; the carbon nano-crystal that obtains must strengthen carbon/carbon-copper composite material and have mechanical property and the good advantage of conductivity, and technology is simple, is easy to accomplish scale production.
Embodiment
Embodiment 1:
Step 1: to the pre-treatment of carbon nanotube, carbon nanotube diameter 80～100 nanometers, adopt agate ball and agate spherical tank, with 200 rev/mins rotating speed ball millings 60 minutes, make carbon nanotube fragment into length-to-diameter ratio and be about 5: 1 carbon nano-crystal palpus, must carry out pickling with hydrochloric acid to carbon nano-crystal again, oven dry then, for future use.
Step 2: adopt agate ball and agate spherical tank, with 200 rev/mins rotating speeds to step 1 obtain carbon nano-crystal must with copper powder ball milling 60 minutes, make the carbon nano-crystal that mixes must with the composite powder of copper powder, wherein carbon nano-crystal must the volume content in composite powder be 1%.
Step 3: the composite powder that step 2 is obtained carries out hot pressed sintering, and wherein sintering temperature is at 900 ℃, and sintering pressure can make the bulk carbon nano-crystal and must strengthen carbon/carbon-copper composite material at 40MPa.
Embodiment 2:
Step 1: to the pre-treatment of carbon nanotube, carbon nanotube diameter 80～100 nanometers, adopt agate ball and agate spherical tank, with 300 rev/mins rotating speed ball millings 40 minutes, make carbon nanotube fragment into length-to-diameter ratio and be about 5: 1 carbon nano-crystal palpus, must carry out pickling with hydrochloric acid to carbon nano-crystal again, oven dry then, for future use.
Step 2: adopt agate ball and agate spherical tank, with 300 rev/mins rotating speeds to step 1 obtain carbon nano-crystal must with copper powder ball milling 40 minutes, make the carbon nano-crystal that mixes must with the composite powder of copper powder, wherein carbon nano-crystal must the volume content in composite powder be 3%.
Step 3: the composite powder that step 2 is obtained carries out hot pressed sintering, and wherein sintering temperature is at 1000 ℃, and sintering pressure can make the bulk carbon nano-crystal and must strengthen carbon/carbon-copper composite material at 20MPa.
Embodiment 3:
Step 1: to the pre-treatment of carbon nanotube, carbon nanotube diameter 80～100 nanometers, adopt agate ball and agate spherical tank, with 400 rev/mins rotating speed ball millings 30 minutes, make carbon nanotube fragment into length-to-diameter ratio and be about 5: 1 carbon nano-crystal palpus, must carry out pickling with hydrochloric acid to carbon nano-crystal again, oven dry then, for future use.
Step 2: adopt agate ball and agate spherical tank, with 400 rev/mins rotating speeds to step 1 obtain carbon nano-crystal must with copper powder ball milling 30 minutes, make the carbon nano-crystal that mixes must with the composite powder of copper powder, wherein carbon nano-crystal must the volume content in composite powder be 5%.
Step 3: the composite powder that step 2 is obtained carries out hot pressed sintering, and wherein sintering temperature is at 1050 ℃, and sintering pressure can make the bulk carbon nano-crystal and must strengthen carbon/carbon-copper composite material at 10MPa.
Claims (4)
1, a kind of preparation method of carbon nanotube reinforced copper-base composite material is characterized in that adopting following steps: (1) adopts the mechanical ball milling method that carbon nanotube is fragmented into needed carbon nano-crystal palpus, and must carry out pickling, oven dry to carbon nano-crystal; (2) carbon nano-crystal that mixes of preparation must with the composite powder of copper powder; (3) preparation bulk carbon nano-crystal must strengthen carbon/carbon-copper composite material.
2, the preparation method of carbon nanotube reinforced copper-base composite material as claimed in claim 1, it is characterized in that: in the step (1), adopt agate ball and agate spherical tank, with 200～400 rev/mins rotating speed ball millings 30～60 minutes, making carbon nanotube fragment into needed carbon nano-crystal must, must carry out pickling with hydrochloric acid to carbon nano-crystal again, then oven dry.
3, the preparation method of carbon nanotube reinforced copper-base composite material as claimed in claim 1, it is characterized in that: in the step (2), adopt agate ball and agate spherical tank, carbon nano-crystal after the pickling oven dry that step (1) is obtained with 200～400 rev/mins rotating speeds must with copper powder ball milling 30～60 minutes, make the carbon nano-crystal that mixes must with the composite powder of copper powder, wherein carbon nano-crystal must the volume content in composite powder be 1～5%.
4, the preparation method of carbon nanotube reinforced copper-base composite material as claimed in claim 1, it is characterized in that: in the step (3), hot pressing sintering method can make the bulk carbon nano-crystal must strengthen carbon/carbon-copper composite material, and wherein sintering temperature is at 850～1050 ℃, and sintering pressure is at 10～40MPa.
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| CN200910017222A CN101619426A (en) | 2009-07-17 | 2009-07-17 | Preparation method of carbon nanotube reinforced copper-based composite material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324335A (en) * | 2011-06-07 | 2012-01-18 | 天津工业大学 | Method for preparing compound electrical contact material |
| CN103128284A (en) * | 2013-03-15 | 2013-06-05 | 南昌航空大学 | Reinforced method of carbon nanotubes (CNTs) of laser-induced composite fused deposition gradient content for copper matrix composite materials |
| CN104841942A (en) * | 2015-02-05 | 2015-08-19 | 昆明理工大学 | Preparation method for multiwalled carbon nanotube and enhancement copper base compound powder |
| CN107377965A (en) * | 2017-06-21 | 2017-11-24 | 昆明理工大学 | A kind of carbon nano tube/copper composite powder preparation method based on anti-disproportionated reaction |
| CN110560698A (en) * | 2019-09-11 | 2019-12-13 | 燕山大学 | preparation method of carbon nano tube reinforced copper-based composite material |
-
2009
- 2009-07-17 CN CN200910017222A patent/CN101619426A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324335A (en) * | 2011-06-07 | 2012-01-18 | 天津工业大学 | Method for preparing compound electrical contact material |
| CN102324335B (en) * | 2011-06-07 | 2013-10-23 | 天津工业大学 | Method for preparing compound electrical contact material |
| CN103128284A (en) * | 2013-03-15 | 2013-06-05 | 南昌航空大学 | Reinforced method of carbon nanotubes (CNTs) of laser-induced composite fused deposition gradient content for copper matrix composite materials |
| CN103128284B (en) * | 2013-03-15 | 2014-11-05 | 南昌航空大学 | Reinforced method of carbon nanotubes (CNTs) of laser-induced composite fused deposition gradient content for copper matrix composite materials |
| CN104841942A (en) * | 2015-02-05 | 2015-08-19 | 昆明理工大学 | Preparation method for multiwalled carbon nanotube and enhancement copper base compound powder |
| CN107377965A (en) * | 2017-06-21 | 2017-11-24 | 昆明理工大学 | A kind of carbon nano tube/copper composite powder preparation method based on anti-disproportionated reaction |
| CN107377965B (en) * | 2017-06-21 | 2019-07-16 | 昆明理工大学 | A kind of carbon nano tube/copper composite powder preparation method based on anti-disproportionated reaction |
| CN110560698A (en) * | 2019-09-11 | 2019-12-13 | 燕山大学 | preparation method of carbon nano tube reinforced copper-based composite material |
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Open date: 20100106 |