CN105742083A - Composite electric contact material with carbon nanotube enhancement, and preparation process thereof - Google Patents
Composite electric contact material with carbon nanotube enhancement, and preparation process thereof Download PDFInfo
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- CN105742083A CN105742083A CN201410763610.7A CN201410763610A CN105742083A CN 105742083 A CN105742083 A CN 105742083A CN 201410763610 A CN201410763610 A CN 201410763610A CN 105742083 A CN105742083 A CN 105742083A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
Abstract
The invention discloses a composite electric contact material with carbon nanotube enhancement, and a preparation process thereof. The composite electric contact material comprises a silver-base contact material and a copper-base contact material, wherein the silver-base contact material mainly comprises the ingredients of silver or a silver alloy, an enhancement material with a carbon nanotube growing on its particle surface, and an additive; and the copper-base contact material mainly comprises the ingredients of copper or a copper alloy with a carbon nanotube growing on its particle surface, an enhancement material and an additive. According to the invention, the problem of aggregation of the enhancement material in the silver-base contact material under an arc effect is solved, the electrical performance of the material is improved, and the requirements for volume miniaturization and excellent performance of a low-voltage electric appliance are satisfied.
Description
Technical field
The invention belongs to contact material field, specifically refer to composited contact material and preparation technology thereof that a kind of CNT strengthens.
Background technology
Conventional low voltage electrical equipment slider material is money base contact and cuprio slider material；Conventional material is AgNi, AgMeO, AgW, AgWC, AgC and CuMe or CuMeO material.It is connected as being directly connected between such material matrix material (silver or copper) and reinforcing material (desilver or the material outside copper).Reinforcing material is under arcing, owing to the wettability with matrix material is poor, difference in specific gravity is big, it is easy to cause assembling, thus having a strong impact on contact stabilization and the resistance fusion welding energy of slider material.
By retrieving, electrical property is improved mainly by additive and additive distribution in money base contact.Specific as follows:
1, the preparation method of a CN102800513A electrical contact material, propose a kind of AgNi novel contact material, the i.e. new A gNi material of nickel particle surface cladding metallic element, adds the equally distributed problem of metallic element, it is achieved that Ni is wetting out problems in Ag matrix between this material Ni and Ag.
2, the preparation method of CN102350502A silver-stannic oxide by using physical metallurgical coating method, discloses a kind of oxide that adds and is evenly distributed on tin oxide surface, solve SnO equally2Granule is at Ag intrinsic silicon wetting out problems.
3, the preparation method of a CN102324335A composite electric contact material discloses a kind of cuprio slider material, is mainly characterized by CNT coated copper.
Contrast patent 1,2 all achieves each reinforcing material (oxide, Ni) Surface coating additive, solve the moistening of reinforcing material and silver matrix, but owing to the surface of additive is less, density is relatively low, the problem that reinforcing material is assembled cannot be fully solved, after repeatedly arcing, the problem that there will be melting welding equally with contact instability.Compared with adding the slider material such as Graphene, CNT with conventional powder mixing method, it is impossible to realize ensureing each matrix material or reinforcing material surface distributed CNT, the uniformity of electrical property cannot be ensured equally simultaneously.
Same copper-based material is easy to aoxidize in atmosphere, and its low temperature contact performance is excessively poor, has a strong impact on using and promoting of such material.Contrast patent 3 discloses the patent of a kind of CNT coated copper; tentatively achieve the ability that copper-based material is anti-oxidation; but there is complicated process of preparation in this material, adopt copper sheet to be the copper granule that raw material brings thick (cannot arrive the effect that CNT is protected completely), material internal contains part silver and cannot realize entirely without problems such as patinas, is difficult to industrially be applied.
Summary of the invention
The invention aims to the shortcoming and defect overcoming prior art to exist, and the composited contact material that a kind of contact performance is good, resistance fusion welding stabilizability excellent and the CNT of low temperature contact resistance good stability strengthens is provided.
Second purpose of the present invention is to provide the preparation technology of the composited contact material that a kind of above-mentioned CNT strengthens.
For achieving the above object, the technical scheme is that this composited contact material is ag-based contact material or cuprio slider material；
Described ag-based contact material includes following components: accounting for the superficial growth that gross mass percentage ratio is 70-90% and silver or the silver alloy of CNT, surplus is reinforcing material；
Described cuprio slider material includes following components: accounting for the superficial growth that gross mass percentage ratio is 85-99% and CNT copper or copper alloy, surplus is reinforcing material.
Arranging further is that in described silver alloy, the content of silver is higher than 95wt%, and in this silver alloy, addition element is a kind of, two or more element combinations in Ni, Cu, Bi, RE, Mg, Zn.
Arranging further is that in described copper alloy, copper content is higher than 90wt%, and in this copper alloy, addition element is a kind of, two or more element combinations in Ni, RE, Bi, B, Zn, Al.
Setting is described reinforcing material further is SnO2、ZnO、CdO、Fe2O3、CuO、REO、MOO3、WO3In one or more combination, or this reinforcing material be in tungsten, tungsten carbide, vanadium carbide, boron carbide, graphite, Ni, B one or more combination.
Arranging further is that carbon nano tube growth area accounts for copper or the 50%-100% of copper alloy granule, silver or alloy silver powder surface area.
Setting is described CNT further is single wall or multi-walled carbon nano-tubes, and pipe range is in 100nm.
For realizing second goal of the invention of the present invention, its technical scheme is this composited contact material is ag-based contact material, including following operation: reinforcing material powder and additive powder adopt chemical vapour deposition technique or other any carbon nanotube dust superficial growth technology, the reinforcing material powder of preparation superficial growth CNT and additive powder, by the copper of superficial growth CNT or copper alloy analysis or argentum powder or alloy silver powder through techniques such as mixed powder, briquetting, sintering, extruding, prepare ag-based contact material；
The present invention adopts CNT that reinforcing material in silver/cuprio slider material is protected, and utilizes the high-specific surface area of CNT, adds the viscosity producing molten bath under arcing, thus reducing electric arc splash, improves the anti-electricity scaling loss ability of slider material；Also with CNT high-specific surface area, adding reinforcing material and additive and assemble (floating or precipitation) difficulty in molten bath, after arcing, ablation layer material composition is stable, it is ensured that the stability of contact resistance in electric contact material process under arms.Adopt CNT that the copper and copper alloy of cuprio slider material is protected, fully solve cuprio slider material low temperature antioxygenic property, make cuprio slider material may be used in the higher relay of contact resistance stability requirement.
Below in conjunction with specification drawings and specific embodiments, the present invention is described further.
Accompanying drawing explanation
Fig. 1 is the CuTe powder granule figure that CNT in superficial growth, and from photo it can be seen that powder granule is as acanthosphere, CNT uniformly produces at particle surface.
Detailed description of the invention
By the examples below the present invention is specifically described; it is served only for the present invention is further described; it is not intended that limiting the scope of the present invention, the present invention can be made some nonessential improvement and adjustment according to the content of foregoing invention by the technician in this field.
Embodiment 1
Ag-based contact material (AgTe/CNTS) Ni10:Ag/CNTS:90%, Ni:10, wherein CNTS produces and covers AgTe granule 83-92% surface, and pipe range is at 30-60nm.Preparation technology is: water atomization technique prepares AgTe powder, AgTe powder chemical vapour deposition (CVD) nanotube in tube type resistance furnace, and atmosphere is that methane, Chemical result temperature are at 300-800 DEG C.Superficial growth has the AgTe powder of CNT, Ni powder to prepare into (AgTe/CNTS) slider material of relative density 99% through mixed powder, isostatic pressed briquetting, sintering, extruding.
Ag/CNTSNi10 silk material contact physical property prepared by this example is as follows: density 10.19g/cm3, resistivity 2.05 μ Ω .cm, hardness (HV0.3) 109(half-hard state), tensile strength 354MPa.
Embodiment 2
Cuprio slider material (CuTe/CNTS) WC:WC:2%, CuTe/CNTS:98%, wherein CNTS growth covers Cu 74-85% surface, and pipe range is at 40-70nm.Preparation technology is: water atomization technique prepares CuTe powder, and CuTe powder adds in homodisperse graphite oxide aqueous solution, through hydrazine hydrate reduction, goes out CNT in CuTe powder superficial growth.Superficial growth has the CuTe powder of CNT, WC powder to prepare into (CuTe/CNTS) WC slider material of relative density 99% through mixed powder, isostatic pressed briquetting, sintering, extruding.
(CuTe/CNTS) WC strip-form contacts physical property prepared by this example is as follows: density 8.75g/cm3, resistivity 2.45 μ Ω .cm, hardness (HV0.3) 108(half-hard state)
The invention is not restricted to above example.
Electrical performance test
Present example material is carried out electrical performance test
1, money base (Ag/CNTS) Ni10 carries out electric life AC-8B test with conventional AgNi10 slider material on CJX2-25 electrical equipment, conventional AgNi10 material is in the viscous dead inefficacy of about tens times welding, the test material life-span exceeded 4000 times, thus illustrating that material arc resistant melting welding ability of the present invention is obviously improved, observe electric life test back contact material surface simultaneously, find that conventional AgNi10 slider material surface occurs that significantly silver is assembled and nickel aggregation zone, and there is cracking to occur, test material occurs without silver clustering phenomena substantially, ftractures less simultaneously.
Temperature rise, length time delay, disjunction test, the electrical endurance test after miniature circuit breaker DZ47-100 carries out temperature rise in advance, examination of the cuprio slider material of the present invention.Result of the test confirms.After result proves that the long-time air of cuprio slider material that CNT prepared by the present invention is coated with is deposited, contact resistance is only less than 60m Ω, after trying before examination, temperature rise is less than 60k, length time delay meets requirement, disjunction test is available to be tested by 10kA, electric life close to 12k, with existing ag-based contact material quite, even more excellent, can be applied in completely on below 100A miniature circuit breaker.
Claims (7)
1. the composited contact material that a CNT strengthens, it is characterised in that: this composited contact material is ag-based contact material or cuprio slider material；
Described ag-based contact material includes following components: accounting for gross mass percentage ratio is silver or the silver alloy that CNT in 70-90% superficial growth, and surplus is reinforcing material；
Described cuprio slider material includes following components: accounting for the superficial growth that gross mass percentage ratio is 85-99% and copper or the copper alloy of CNT, surplus is reinforcing material.
2. the composited contact material that CNT according to claim 1 strengthens, it is characterized in that: in described silver alloy, the content of silver is higher than 95wt%, in this silver alloy, addition element is a kind of, two or more element combinations in Ni, Cu, Bi, RE, Mg, Zn.
3. the composited contact material that CNT according to claim 1 strengthens, it is characterised in that: in described copper alloy, copper content is higher than 90wt%, and in this copper alloy, addition element is a kind of, two or more element combinations in Ni, RE, Bi, B, Zn, Al.
4. the composited contact material that CNT according to claim 1 strengthens, it is characterised in that: described reinforcing material is SnO2、ZnO、CdO、Fe2O3、CuO、REO、MOO3、WO3In one or more combination, or this reinforcing material be in tungsten, tungsten carbide, vanadium carbide, boron carbide, graphite, Ni, B one or more combination.
5. the composited contact material that CNT according to claim 1 strengthens, it is characterised in that: carbon nano tube growth area accounts for copper or the 50%-100% of copper alloy, silver or silver alloy particles surface area.
6. the composited contact material that a kind of CNT according to claim 1 strengthens, it is characterised in that: described CNT is single wall or multi-walled carbon nano-tubes, and pipe range is in 100nm.
7. the preparation technology of the composited contact material of a CNT as claimed in claim 1 enhancing, it is characterized in that: described composited contact material includes following operation: prepared by copper or copper alloy powder, silver or alloy silver powder, adopt chemical vapour deposition technique or other any CNTs at powder surface growing technology at copper or copper alloy powder, silver or alloy silver powder superficial growth CNT；Grow the powder of CNT, reinforcing material powder through mixed powder, briquetting, sintering, extruding, prepare into slider material.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410763610.7A CN105742083A (en) | 2014-12-11 | 2014-12-11 | Composite electric contact material with carbon nanotube enhancement, and preparation process thereof |
| PCT/CN2015/073259 WO2016090756A1 (en) | 2014-12-11 | 2015-02-25 | Carbon nanotube reinforced composite electrical contact material and preparation process therefor |
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| CN201410763610.7A CN105742083A (en) | 2014-12-11 | 2014-12-11 | Composite electric contact material with carbon nanotube enhancement, and preparation process thereof |
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| CN105742083A true CN105742083A (en) | 2016-07-06 |
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| WO (1) | WO2016090756A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108628502A (en) * | 2018-04-12 | 2018-10-09 | 重庆市中光电显示技术有限公司 | Touch screen aqueous composite conducting slurry and its preparation method and application |
| CN112111636A (en) * | 2020-09-15 | 2020-12-22 | 扬州大学 | Anti-oxidation graphene carbon powder mixing protection process used in laboratory single disc spring high-temperature heat preservation process |
| CN112267044A (en) * | 2020-10-19 | 2021-01-26 | 西安工程大学 | Preparation method of copper/graphite/tin oxide electric contact material |
| CN112831682A (en) * | 2020-12-31 | 2021-05-25 | 四川艾尔法泰克科技有限公司 | Composite silver-based electric contact material and preparation method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115637349A (en) * | 2022-09-17 | 2023-01-24 | 浙江福达合金材料科技有限公司 | Silver tin oxide electric contact material and preparation method thereof |
| CN116043054B (en) * | 2023-03-22 | 2023-06-16 | 厦门凯纳石墨烯技术股份有限公司 | Modified graphene composite metal material and preparation method thereof |
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| US5198015A (en) * | 1990-06-21 | 1993-03-30 | Matsushita Electric Works, Ltd. | Silver base electrical contact material and method of making the same |
| CN1714411A (en) * | 2002-11-28 | 2005-12-28 | 信浓绢糸株式会社 | Electric contact member |
| CN101345142B (en) * | 2008-08-25 | 2010-09-15 | 倪树春 | Electrical contact material with Ti3SiC2 multi-layer compound structure and preparation technique |
| CN102002651A (en) * | 2010-12-03 | 2011-04-06 | 温州宏丰电工合金股份有限公司 | Method for preparing silver-based electrical contact material with fibrous structure |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101707154B (en) * | 2009-09-24 | 2011-10-05 | 温州宏丰电工合金股份有限公司 | Method for preparing a silver-based electric contact material |
| JP2013067854A (en) * | 2011-09-20 | 2013-04-18 | Pelnox Ltd | Copper composite particle, composite metallic copper particle, method for producing copper composite particle, metallic paste, article having metallic conductor and method for producing article having metallic conductor |
| CN103789744B (en) * | 2014-03-03 | 2015-10-07 | 哈尔滨工业大学 | A kind of in-situ growing carbon nano tube strengthens the preparation method of silver-based electric contact material |
-
2014
- 2014-12-11 CN CN201410763610.7A patent/CN105742083A/en active Pending
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2015
- 2015-02-25 WO PCT/CN2015/073259 patent/WO2016090756A1/en active Application Filing
Patent Citations (4)
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| US5198015A (en) * | 1990-06-21 | 1993-03-30 | Matsushita Electric Works, Ltd. | Silver base electrical contact material and method of making the same |
| CN1714411A (en) * | 2002-11-28 | 2005-12-28 | 信浓绢糸株式会社 | Electric contact member |
| CN101345142B (en) * | 2008-08-25 | 2010-09-15 | 倪树春 | Electrical contact material with Ti3SiC2 multi-layer compound structure and preparation technique |
| CN102002651A (en) * | 2010-12-03 | 2011-04-06 | 温州宏丰电工合金股份有限公司 | Method for preparing silver-based electrical contact material with fibrous structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108628502A (en) * | 2018-04-12 | 2018-10-09 | 重庆市中光电显示技术有限公司 | Touch screen aqueous composite conducting slurry and its preparation method and application |
| CN108628502B (en) * | 2018-04-12 | 2021-07-06 | 重庆市中光电显示技术有限公司 | Water-based composite conductive slurry for touch screen and preparation method and application thereof |
| CN112111636A (en) * | 2020-09-15 | 2020-12-22 | 扬州大学 | Anti-oxidation graphene carbon powder mixing protection process used in laboratory single disc spring high-temperature heat preservation process |
| CN112267044A (en) * | 2020-10-19 | 2021-01-26 | 西安工程大学 | Preparation method of copper/graphite/tin oxide electric contact material |
| CN112831682A (en) * | 2020-12-31 | 2021-05-25 | 四川艾尔法泰克科技有限公司 | Composite silver-based electric contact material and preparation method thereof |
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| WO2016090756A1 (en) | 2016-06-16 |
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Application publication date: 20160706 |