CN100577847C - Composite material of carbon/carbon/copper and production technology thereof - Google Patents
Composite material of carbon/carbon/copper and production technology thereof Download PDFInfo
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- CN100577847C CN100577847C CN200710035954A CN200710035954A CN100577847C CN 100577847 C CN100577847 C CN 100577847C CN 200710035954 A CN200710035954 A CN 200710035954A CN 200710035954 A CN200710035954 A CN 200710035954A CN 100577847 C CN100577847 C CN 100577847C
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- carbon
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- charcoal
- net tire
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Abstract
The invention discloses carbon / carbon / copper composite material which has the advantages that the production process is easy to be controlled, the isotropy of the product is good, and the combined property is good. The invention is characterized in that the carbon / carbon / copper composite material is calculated according to the weight percentage, and the weight ratio of the carbon / carbon composite material to copper or copper alloy is 15 to 75: 85 to 25; the production process comprises the following steps: a prepared web and carbon cloth are compounded into a precasting part through needling, the carbon, the copper or the copper alloy with different morphologies is compounded into a whole through densification (or vacuum pressure copper cementation) to form the carbon / carbon / copper composite material; the production process of the invention is simple and easy to be controlled, and the made composite material has good abrasive resistance and feasible electrical conductivity, and also has the advantages of high specific strength, high specific modulus, high temperature resistance and ablation resistance, and can be applied to the high conductivity and abrasive resistance field; the abrasion loss of an electric brush made of carbon / carbon / copper composite material is lower than 0.18 mm / 50 hours, and the abrasion loss of the prior electric brush is generally higher than 0.20 mm / 50 hours.
Description
Technical field:
The present invention relates to a kind of high conductivity and wear resistance field material, specifically a kind of charcoal/composite material of carbon/carbon/copper and production technique thereof of being used for.
Background technology:
Charcoal fiber-Cu-base composites is owing to combine high specific strength, specific modulus, low thermal coefficient of expansion and the good lubricity of good conductive, thermal conductivity and the charcoal fiber of copper, possessed higher intensity, good series of advantages such as conductivity, anti-attrition wear resistance, solidity to corrosion, arc ablation resistance and resistance fusion welding, materials of electronic components, sliding material, contact material have been widely used in, fields such as cooling integrated plate and wear resistant appliance are the rising new function materials of a class.At present, preparation charcoal fiber-Cu-base composites mainly adopts following several technology: powder metallurgic method, pressure sintering, squeeze casting method etc.Powder metallurgic method prepares charcoal fiber-Cu-base composites, has deficiencies such as production efficiency is low, complex manufacturing, generally only is applicable to staple fibre-Cu-base composites that fibre content is lower; The relative powder metallurgic method of pressure sintering, little to fibre-tendering, the material property that makes is preferable, but apparatus expensive, the cost height is difficult for producing in batches, industrial difficult the popularization; It is a kind of effective ways that squeeze casting method prepares charcoal fiber-Cu-base composites, processing parameter is easy to control, stable performance, preparation cost is low, rationally control process parameters can be prepared high performance matrix material, but also have a lot of deficiencies aspect the matrix material that obtains good processability, the extrusion casting process easily produces several big defectives: fiber volume fraction is difficult to control, easily causes the poly-partially of charcoal fiber; Under the high pressure effect, cause very big stress concentration, fiber contacts with fiber interface fragility, and crackle is easily expanded rapidly and caused low stress damage.
Summary of the invention:
It is easy to control to the purpose of this invention is to provide a kind of production technique, and product homogenisation is good, has the charcoal/composite material of carbon/carbon/copper and the production technique thereof of excellent comprehensive performance.
The present invention adopts following technical scheme to realize its goal of the invention, short carbon fiber is prepared into the net tire by non-woven technology, macrofiber is prepared into charcoal cloth by textile technology, by the acupuncture technology both are combined into prefabricated component (compound tense adds copper powder or copper alloy powder according to arts demand) then, pass through chemical vapour deposition (infiltration) and/or impregnating technology again, or adopt vacuum pressure subsequently to ooze copper technology, carbon, copper or the copper alloy of different shape are combined into one and make charcoal/composite material of carbon/carbon/copper.
A kind of charcoal/composite material of carbon/carbon/copper, in weight 100%, the weight ratio of carbon/carbon composite and copper or copper alloy is 15～75: 85～25.
Apparent density is 1.3g/cm after described charcoal/composite material of carbon/carbon/copper density
3～6.2g/cm
3, resistivity is 1 μ Ω m～26 μ Ω m, and Shore hardness is 40～85, and bending strength is 35MPa～150MPa.
Its production technique may further comprise the steps:
(1) shredding becomes net: choose the long short carbon fiber of 6mm～70mm by proportioning, become fluffy single shape fiber through the shredding of shredding equipment, then the good charcoal fiber of shredding through air and/or carding, utilize the lapping machine to be paved into fibrous reticulum again, sting into the net tire in advance, the area density of described net tire is 50g/m
2～100g/m
2
(2) lamination acupuncture is compound: the net tire through step (1) gained is tiled on the worktable, to evenly be spread on the net tire by copper powder or the copper alloy powder that proportioning is chosen, spread layer charcoal cloth then, on charcoal cloth, spread layer net tire again, by acupuncture, wrap copper powder or copper alloy powder, so repeat to make the charcoal/composite material of carbon/carbon/copper prefabricated component of necessary requirement, the area density of described charcoal cloth is 200g/m
2～300g/m
2
(3) density: the prefabricated component density of step (2) gained is become charcoal/composite material of carbon/carbon/copper.
Step of the present invention (2) can also be for being tiled in the net tire through step (1) gained on the worktable, to evenly be spread on the net tire by copper powder or the copper alloy powder that proportioning is chosen, repave a layer net tire, by acupuncture, wrap copper powder or copper alloy powder, so repeat to make the charcoal/composite material of carbon/carbon/copper prefabricated component of necessary requirement.
The present invention is in step (2), and needling process is depth of needling 7～15mm; 3～10 times/cm of needling density
2
Another kind of production technique of the present invention can also adopt following steps:
(1) shredding becomes net: choose the long short carbon fiber of 6mm～70mm by proportioning, become fluffy single shape fiber through the shredding of shredding equipment, then the good charcoal fiber of shredding through air and/or carding, utilize the lapping machine to be paved into fibrous reticulum again, sting into the net tire in advance, the area density of described net tire is 50g/m
2～100g/m
2
(2) lamination acupuncture is compound: the net tire through step (1) gained is tiled on the worktable, shop layer charcoal cloth repaves a layer net tire then in the above, makes it compound by acupuncture, so repeat to make the carbon/carbon composite prefabricated component of necessary requirement, the area density of described charcoal cloth is 200g/m
2～300g/m
2
(3) density: the base substrate that the prefabricated component density of step (2) gained is become desired density and porosity;
(4) ooze copper: put into vacuum melting furnace with step (3) gained base substrate with by copper or copper alloy that proportioning is chosen, make copper or copper alloy liquid make charcoal/composite material of carbon/carbon/copper among infiltrating base substrate.
The present invention is in step (2), and needling process is depth of needling 7～15mm; 3～10 times/cm of needling density
2
The present invention at first heats up vacuum melting furnace and makes copper or copper alloy fusing in step (4), feeds rare gas element then, makes copper liquid or copper alloy liquid 1.2 * 10
5Pa～3 * 10
5Penetrate under the Pa pressure and make charcoal/composite material of carbon/carbon/copper in the base substrate.
Owing to adopt technique scheme, the present invention has realized goal of the invention preferably, its production technique is simple and easy to control, has good processability, the matrix material of making has good wear resistance and proper conductivity, also have characteristics such as high specific strength, high ratio modulus, high temperature resistant, anti-ablation, can be applicable to high conductivity and wear resistance field; Obviously improved the electricity and the mechanical property of brush as the brush with this material manufacturing, the abrasion loss of brush is lower than 0.18mm/50h, and the abrasion loss of present used brush generally is higher than 0.20mm/50h.
Embodiment:
The invention will be further described below in conjunction with embodiment.
Embodiment 1:
A kind of charcoal/composite material of carbon/carbon/copper, in weight 100%, the weight ratio of carbon/carbon composite and copper or copper alloy (present embodiment employing copper powder) is 15～75 (present embodiment is 75): 85～25 (present embodiment is 25), apparent density is 1.3g/cm after described charcoal/composite material of carbon/carbon/copper density
3～6.2g/cm
3(present embodiment is 2.5g/cm
3), resistivity is 1 μ Ω m～26 μ Ω m (present embodiment is 20 μ Ω m), and Shore hardness is 40～85 (present embodiment is 80), and bending strength is 35Mpa～150Mpa (present embodiment is 130Mpa).
Its production technique may further comprise the steps:
(1) shredding becomes net: choose the long short carbon fiber of 6mm～70mm by proportioning, become fluffy single shape fiber through the shredding of shredding equipment, then the good charcoal fiber of shredding through air and/or carding (present embodiment adopts air and carding), utilize the lapping machine to be paved into fibrous reticulum again, sting into the net tire in advance; The area density of described net tire is 70g/m
2
(2) lamination acupuncture is compound: the net tire through step (1) gained is tiled on the worktable, to evenly be spread on the net tire by copper or the copper alloy (present embodiment employing copper powder) that proportioning is chosen, spread layer charcoal cloth then, on charcoal cloth, spread layer net tire again, by acupuncture, wrap copper powder, so repeat to make the charcoal/composite material of carbon/carbon/copper prefabricated component of necessary requirement; The area density of described charcoal cloth is 220g/m
2
(3) density: the prefabricated component density of step (2) gained is become charcoal/composite material of carbon/carbon/copper.Thickening technology adopts but is not limited to the thickening technology that chemical vapor infiltration (deposition) and liquid impregnation combine, and makes its density reach 2.5g/cm
3
The present invention is in step (2), and needling process is depth of needling 9mm; 5 times/cm of needling density
2
Charcoal/composite material of carbon/carbon/copper of making can be used for high conductivity and wear resistance field, as making motor brush, carbon current collector for railway etc.
Embodiment 2:
In weight 100%, the weight ratio of carbon/carbon composite and copper or copper alloy (present embodiment adopts copper-tin alloy powder) is 60: 40, and apparent density is 4.0g/cm after described charcoal/composite material of carbon/carbon/copper density
3, resistivity is 25 μ Ω m, and bending strength is 45MPa, and Shore hardness is 50.
Its production technique is in step (1), and the area density of described net tire is 85g/m
2
Step (2) is for being tiled in the net tire through step (1) gained on the worktable, to evenly be spread on the net tire by copper-tin alloy powder that proportioning is chosen, repave a layer net tire, by acupuncture, wrap copper-tin alloy powder, so repeat to make the charcoal/composite material of carbon/carbon/copper prefabricated component of necessary requirement.
Its needling process is depth of needling 12mm; 7 times/cm of needling density
2
Thickening technology adopts liquid impregnation, makes its density reach 4.0g/cm
3
Surplus with embodiment 1.
Charcoal/composite material of carbon/carbon/copper of making can be used for high conductivity and wear resistance field, as making motor brush, carbon current collector for railway etc.
Embodiment 3:
A kind of charcoal/composite material of carbon/carbon/copper, in weight 100%, the weight ratio of carbon/carbon composite and copper or copper alloy (present embodiment employing copper powder) is 15～75 (present embodiment is 20): 85～25 (present embodiment is 80), apparent density is 1.3g/cm after described charcoal/composite material of carbon/carbon/copper density
3～6.2g/cm
3(present embodiment is 6.2g/cm
3), resistivity is 1 μ Ω m～26 μ Ω m (present embodiment is 5 μ Ω m), and Shore hardness is 40～85 (present embodiment is 45), and bending strength is 35Mpa～150Mpa (present embodiment is 65Mpa).
Its production technique may further comprise the steps:
(1) shredding becomes net: choose the long short carbon fiber of 6mm～70mm by proportioning, become fluffy single shape fiber through the shredding of shredding equipment, then the good charcoal fiber of shredding through air and/or carding (present embodiment adopts air and carding), utilize the lapping machine to be paved into fibrous reticulum again, sting into the net tire in advance, the area density of described net tire is 60g/m
2
(2) lamination acupuncture is compound: the net tire through step (1) gained is tiled on the worktable, shop layer charcoal cloth repaves a layer net tire then in the above, makes it compound by acupuncture, so repeat to make the carbon/carbon composite prefabricated component of necessary requirement, the area density of described charcoal cloth is 260g/m
2
(3) density: the base substrate that the prefabricated component density of step (2) gained is become desired density and porosity;
Thickening technology adopts but is not limited to chemical vapor infiltration (deposition), and control density condition can make the base substrate of necessary requirement (being generally porosity).
(4) ooze copper: put into vacuum melting furnace with step (3) gained base substrate with by the copper that proportioning is chosen, make copper make charcoal/composite material of carbon/carbon/copper among infiltrating base substrate.
The present invention is in step (2), and needling process is depth of needling 13mm; 10 times/cm of needling density
2
The present invention at first heats up vacuum melting furnace and makes the copper fusing in step (4), feeding rare gas element, is forced into 1.2 * 10
5Pa～3 * 10
5(present embodiment is 2 * 10 to Pa
5Pa) under the situation, copper liquid is penetrated into make charcoal/composite material of carbon/carbon/copper in the base substrate.
Control the base substrate porosity and ooze charcoal/composite material of carbon/carbon/copper that the process for copper parameter can be produced different Cu content.
Charcoal/composite material of carbon/carbon/copper of making can be used for high conductivity and wear resistance field, as making motor brush, carbon current collector for railway etc.
Embodiment 4:
In weight 100%, the weight ratio of carbon/carbon composite and copper or copper alloy (present embodiment adopts copper-tin alloy powder) is 70: 30, and apparent density is 3.0g/cm after described charcoal/composite material of carbon/carbon/copper density
3, resistivity is 15 μ Ω m, and bending strength is 100MPa, and Shore hardness is 60.
In step (4), at first vacuum melting furnace is heated up and make copper-tin alloy fusing, feeding rare gas element, be forced into 2 * 10
5Under the Pa situation, copper-tin alloy liquid is penetrated into make charcoal/composite material of carbon/carbon/copper in the base substrate.
Surplus with embodiment 3.
Charcoal/composite material of carbon/carbon/copper of making can be used for high conductivity and wear resistance field, as making motor brush, carbon current collector for railway etc.
Claims (3)
1, the production technique of a kind of charcoal/composite material of carbon/carbon/copper prefabricated component, wherein said charcoal/composite material of carbon/carbon/copper, in weight 100%, the weight ratio of carbon/carbon composite and copper or copper alloy is 15～75: 85～25, it is characterized in that may further comprise the steps:
(1) shredding becomes net: choose the long short carbon fiber of 6mm～70mm by proportioning, become fluffy single shape fiber through the shredding of shredding equipment, then the good charcoal fiber of shredding through air and/or carding, utilize the lapping machine to be paved into fibrous reticulum again, sting into the net tire in advance, the area density of described net tire is 50g/m
2～100g/m
2
(2) lamination acupuncture is compound: the net tire through step (1) gained is tiled on the worktable, to evenly be spread on the net tire by copper powder or the copper alloy powder that proportioning is chosen, spread layer charcoal cloth then, on charcoal cloth, spread layer net tire again, by acupuncture, wrap copper powder or copper alloy powder, so repeat to make the charcoal/composite material of carbon/carbon/copper prefabricated component of necessary requirement, the area density of described charcoal cloth is 200g/m
2～300g/m
2
(3) density: with the prefabricated component density of step (2) gained.
2,, it is characterized in that in step (2), needling process is depth of needling 7～15mm according to the production technique of the described charcoal of claim 1/composite material of carbon/carbon/copper prefabricated component; 3～10 times/cm of needling density
2
3, according to the production technique of the described charcoal of claim 1/composite material of carbon/carbon/copper prefabricated component, it is characterized in that step (2) is for being tiled in the net tire through step (1) gained on the worktable, to evenly be spread on the net tire by copper powder or the copper alloy powder that proportioning is chosen, repave a layer net tire, by acupuncture, wrap copper powder or copper alloy powder, so repeat to make the charcoal/composite material of carbon/carbon/copper prefabricated component of necessary requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710035954A CN100577847C (en) | 2007-10-22 | 2007-10-22 | Composite material of carbon/carbon/copper and production technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710035954A CN100577847C (en) | 2007-10-22 | 2007-10-22 | Composite material of carbon/carbon/copper and production technology thereof |
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| CN101195899A CN101195899A (en) | 2008-06-11 |
| CN100577847C true CN100577847C (en) | 2010-01-06 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101386547B (en) * | 2008-08-21 | 2012-11-14 | 湖南金博复合材料科技有限公司 | Carbon/carbon compound material heating element and production technology thereof |
| CN104577632B (en) * | 2014-12-19 | 2017-05-03 | 江苏大学 | Preparation method of carbon/carbon-graphite/copper electric brush for motor |
| CN104894494A (en) * | 2015-05-25 | 2015-09-09 | 昆明理工大学 | Preparation method of carbon fiber mesh reinforced copper-based wear-resisting material |
| CN105648257B (en) * | 2015-12-31 | 2017-09-29 | 中国钢研科技集团有限公司 | A kind of serialization high temperature insostatic pressing (HIP) dipping method for preparing large-size carbon carbon/carbon-copper composite material |
| CN106756190B (en) * | 2016-11-21 | 2019-04-02 | 新冶高科技集团有限公司 | Prepare the serialization hot isostatic pressing dipping method of high impregnation increment composite carbon-copper material |
| CN109023170A (en) * | 2018-08-29 | 2018-12-18 | 佛山朝鸿新材料科技有限公司 | A kind of preparation method of powder metallurgy friction material |
| CN110983208B (en) * | 2019-10-24 | 2021-08-31 | 中南大学 | C/C-SiC-Cu composite material and preparation method and application thereof |
| CN113149683A (en) * | 2021-04-29 | 2021-07-23 | 上海骐杰碳素材料有限公司 | Carbon or carbon ceramic composite material short fiber preform, product and preparation method thereof |
| CN116198055A (en) * | 2023-03-10 | 2023-06-02 | 西安航空制动科技有限公司 | Preparation method of particle modified carbon fiber composite material needled preform |
-
2007
- 2007-10-22 CN CN200710035954A patent/CN100577847C/en active Active
Non-Patent Citations (4)
| Title |
|---|
| C/C-Cu复合材料的组织和摩擦磨损性能. 冉丽萍等.中国有色金属学报，第17卷第4期. 2007 |
| C/C-Cu复合材料的组织和摩擦磨损性能. 冉丽萍等.中国有色金属学报，第17卷第4期. 2007 * |
| 同上. 同上.同上，第同上卷第同上期. |
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| CN101195899A (en) | 2008-06-11 |
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Owner name: HUNAN JINBO COMPOUND MATERIAL TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: HUNAN BOYUN HIGH-TECH CO., LTD. Effective date: 20100617 |
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Effective date of registration: 20100617 Address after: 413000 Hunan province Yiyang Yingbin Road No. 2 Patentee after: Hunan KBCarbon Composite Science and Technology Co., Ltd. Address before: 413000 Hunan province Yiyang Yingbin Road No. 2 Patentee before: Hunan Boyun High-tech Co., Ltd. |
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Address after: 413000 Hunan province Yiyang Yingbin Road No. 2 Patentee after: Hunan gold carbon Limited by Share Ltd Address before: 413000 Hunan province Yiyang Yingbin Road No. 2 Patentee before: Hunan KBCarbon Composite Science and Technology Co., Ltd. |