CN106505393A - A kind of quiet anlistatig copper-base graphite carbon brush for electric machine and preparation method thereof - Google Patents
A kind of quiet anlistatig copper-base graphite carbon brush for electric machine and preparation method thereof Download PDFInfo
- Publication number
- CN106505393A CN106505393A CN201610927140.2A CN201610927140A CN106505393A CN 106505393 A CN106505393 A CN 106505393A CN 201610927140 A CN201610927140 A CN 201610927140A CN 106505393 A CN106505393 A CN 106505393A
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- CN
- China
- Prior art keywords
- carbon brush
- copper
- electric machine
- mcmb
- anlistatig
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
- H01R39/20—Contacts for co-operation with commutator or slip-ring, e.g. contact brush characterised by the material thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/12—Manufacture of brushes
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
- Motor Or Generator Current Collectors (AREA)
Abstract
The invention discloses a kind of quiet anlistatig copper-base graphite carbon brush for electric machine，The carbon brush material is with natural flake graphite、MCMB、Copper powder、The raw materials such as Ti-Ni alloy powder compounding sintering is formed，By natural flake graphite in preparation process、MCMB is through poly-dopamine film deposition processes，Obtain the material with carbon element with excellent surface activity，Improve the bonding force between each raw material，Material structure after sintering is more fine and close，The Ludox of blending carbon nanometer micro ball is used in addition as bonding agent，Which has good electric conductivity，And without carbon residue，System is had no adverse effects，The consistency of material is further improved，Synergism in conjunction with other raw materials，It is finally obtained the carbon brush for electric machine with high intensity and frictional behaviour，Its damping effect certain in the course of the work，Noise is less，Also good antistatic effect，Improve production security，Reduce the damage of carbon brush material，Increase the service life.
Description
Technical field
The present invention relates to graphite carbon brush technical field, more particularly to a kind of quiet anlistatig copper-base graphite carbon brush for electric machine and
Its preparation method.
Background technology
Carbon brush is a class rubbing device of transmission energy or signal between standing part and rotating part in motor, is electricity
The important composition part of motivation, is the mixture of a kind of graphite and adhesive, as its main component is carbon, so referred to as carbon
Brush.Carbon brush imports the sliding contact body of electric current as deriving, it is desirable to which which has good conduction, heat conduction and greasy property, and
There is the property of certain mechanical strength and commutation property spark, with the development of science and technology, the species of motor and the operating mode for using
Condition is more and more diversified, requires also more and more higher to the combination property of carbon brush material.
Composition and the production technology of raw material is pressed, carbon brush material can be divided into carbon graphite class, electrographite class, metallic graphite carbon
Class, wherein metallic graphite carbon class carbon brush fabrication cycle are shorter, and processing technology is relatively easy, apply relatively broad.Traditional metal stone
Black class carbon brush is mainly crystalline flake graphite and is mixed in the presence of bonding agent with metal-powders such as copper powder, argentum powder, glass puttys, suppresses, burnt
Knot is prepared, metallic element add can the hardness of significant impact material, toughness, electric conductivity and frictional behaviour, metal
Species and proportioning be realize material combination property coordinate key；The originals such as bonding agent in addition, in system, function additive
Material also has important impact to the performance of carbon brush.《Impact of the interpolation of Pb and Sn to high compound brush organizational structure and performance》One text
Pb, Sn alloying element is described to the performance impact containing compound brush, is as a result shown, the hardness to material of alloying element, toughness
It is improved to some extent, but shows poor in electric conductivity and wearability, the total tune of material property is weaker, makes
Use effect on driving birds is not good；Studies have reported that, the interpolation of nano material has some improvement to the wearability of carbon brush, such as《Carbon is received
The preparation and performance study of mitron reinforced resin/graphite carbon brush》One text introduces CNT as modifying agent, effectively reduces
The coefficient of friction of material, anti-wear performance are good, but epoxy resin adhesive therein receives the carbonization granule of thermosetting rubbed
Easily come off in journey, cause surface defect occur, accelerated wear test causes carbon brush degradation after working long hours.
Content of the invention
The object of the invention is exactly the defect in order to make up prior art, there is provided a kind of quiet anlistatig copper-base graphite motor
Carbon brush and preparation method thereof.
The present invention is achieved by the following technical solutions：
A kind of quiet anlistatig copper-base graphite carbon brush for electric machine, the carbon brush material are made up of the raw material of following weight portion：Carbon nanometer
Microsphere 0.4-0.5, natural flake graphite powder 10-15, MCMB 5-8, copper powder 30-50, tin-antiomony oxide 2-3, titanium nickel are closed
Bronze 2-5, ethanol（Analysis is pure）40-50, stearic acid 0.4-0.5, tetraethyl orthosilicate 1-2, sodium lauryl sulphate 0.01-
0.02nd, Tris-HCl buffer solution is appropriate, ammonia 0.1-0.2, Dopamine Hydrochloride 2-3, deionized water 50-60.
The preparation method of described a kind of quiet anlistatig copper-base graphite carbon brush for electric machine is comprised the following steps：
（1）First remove in ionized water input reaction vessel, be subsequently added into Dopamine Hydrochloride, stir to which and be completely dissolved rear Deca
Tris-HCl buffer solution, regulation system pH value are 8-8.5, subsequently sequentially add natural flake graphite powder, MCMB,
36-48h is stood after being uniformly mixed, and process is filtered after terminating, and filtrate is dried after washing, obtains the natural squama of surface modification
Piece graphite powder, MCMB are standby；
（2）Take in ethanol input reaction vessel, be subsequently added tetraethyl orthosilicate, stearic acid, add after stirring mixing 20-30min
Ammonia, continues stirring reaction 15-20min, system is heated to 60-80 DEG C subsequently, and adds carbon nanometer micro ball, dodecyl sulfur
Sour sodium, stirring mixing 3-5h, obtains compound silica gel binding agent standby；
（3）Step is added after mixing at the beginning of the surface modification natural flake graphite powder, MCMB and other leftover materials that prepare
Suddenly（2）The compound silica gel bonding agent of preparation, is combined material dried after ball milling mixing 1-2h, is completely dried rear material in 200-
Through full automatic press band wire one-shot forming under 220MPa pressure, subsequent base substrate vacuum high-temperature sintering is processed, and obtains final product described carbon brush
Material.
Described step（3）Middle base substrate vacuum high-temperature sintering condition is：Vacuum：5-15Pa, sintering temperature are 925-950
DEG C, pressure is 8-10MPa, and sintering time is 30-40min.
The present invention is prepared for a kind of quiet anlistatig copper-base graphite carbon brush for electric machine, and this carbon brush material is with natural scale stone
The raw materials such as ink, MCMB, copper powder, Ti-Ni alloy powder compounding sintering form, in preparation process by natural flake graphite,
MCMB obtains the material with carbon element with excellent surface activity, improves between each raw material through poly-dopamine film deposition processes
Bonding force, the material structure after sintering is more fine and close, uses the Ludox of blending carbon nanometer micro ball in addition as bonding agent, its
There is good electric conductivity, and without carbon residue, system is had no adverse effects, further improve the consistency of material, in conjunction with which
The synergism of his raw material, is finally obtained the carbon brush for electric machine with high intensity and frictional behaviour, and which is certain in the course of the work
Damping effect, noise is less, also good antistatic effect, improves production security, reduces the damage of carbon brush material, prolongs
Long life.
Specific embodiment
A kind of quiet anlistatig copper-base graphite carbon brush for electric machine, the carbon brush material are made up of the raw material of following weight portion：Carbon
Nano microsphere 0.4, natural flake graphite powder 10, MCMB 5, copper powder 30, tin-antiomony oxide 2, Ti-Ni alloy powder 2, ethanol
（Analysis is pure）40th, stearic acid 0.4, tetraethyl orthosilicate 1, sodium lauryl sulphate 0.01, Tris-HCl buffer solution is appropriate, ammonia
0.1st, Dopamine Hydrochloride 2, deionized water 50.
The preparation method of the carbon brush material is comprised the following steps：
（1）First remove in ionized water input reaction vessel, be subsequently added into Dopamine Hydrochloride, stir to which and be completely dissolved rear Deca
Tris-HCl buffer solution, regulation system pH value are 8, subsequently sequentially add natural flake graphite powder, MCMB, stir
36h is stood after mix homogeneously, and process is filtered after terminating, and filtrate is dried after washing, obtains the natural flake graphite of surface modification
Powder, MCMB are standby；
（2）Take in ethanol input reaction vessel, be subsequently added tetraethyl orthosilicate, stearic acid, after stirring mixing 20min, add ammonia
Water, continues stirring reaction 15min, system is heated to 60 DEG C subsequently, and adds carbon nanometer micro ball, sodium lauryl sulphate, stirred
Mixing 3h is mixed, compound silica gel binding agent is obtained standby；
（3）Step is added after mixing at the beginning of the surface modification natural flake graphite powder, MCMB and other leftover materials that prepare
Suddenly（2）The compound silica gel bonding agent of preparation, is combined material dried after ball milling mixing 1h, is completely dried rear material in 200MPa
Through full automatic press band wire one-shot forming under pressure, subsequent base substrate vacuum high-temperature sintering is processed, and obtains final product described carbon brush material.
Wherein step（3）Middle base substrate vacuum high-temperature sintering condition is：Vacuum：10Pa, sintering temperature are 940 DEG C, pressure
For 8MPa, sintering time is 40min.
The carbon brush material that makes carries out performance test according to relevant criterion, and test result is：
SH：18.2；Bending strength：19.3MPa；Coefficient of friction：0.11；Resistivity：0.14μΩ.m.
Claims (3)
1. a kind of quiet anlistatig copper-base graphite carbon brush for electric machine, it is characterised in that original of the carbon brush material by following weight portion
Material is made：Carbon nanometer micro ball 0.4-0.5, natural flake graphite powder 10-15, MCMB 5-8, copper powder 30-50, stannum oxide
Antimony 2-3, Ti-Ni alloy powder 2-5, ethanol（Analysis is pure）40-50, stearic acid 0.4-0.5, tetraethyl orthosilicate 1-2, dodecyl sulfur
Sour sodium 0.01-0.02, Tris-HCl buffer solution is appropriate, ammonia 0.1-0.2, Dopamine Hydrochloride 2-3, deionized water 50-60.
2. a kind of preparation method of quiet anlistatig copper-base graphite carbon brush for electric machine as claimed in claim 1, it is characterised in that
Comprise the following steps：
（1）First remove in ionized water input reaction vessel, be subsequently added into Dopamine Hydrochloride, stir to which and be completely dissolved rear Deca
Tris-HCl buffer solution, regulation system pH value are 8-8.5, subsequently sequentially add natural flake graphite powder, MCMB,
36-48h is stood after being uniformly mixed, and process is filtered after terminating, and filtrate is dried after washing, obtains the natural squama of surface modification
Piece graphite powder, MCMB are standby；
（2）Take in ethanol input reaction vessel, be subsequently added tetraethyl orthosilicate, stearic acid, add after stirring mixing 20-30min
Ammonia, continues stirring reaction 15-20min, system is heated to 60-80 DEG C subsequently, and adds carbon nanometer micro ball, dodecyl sulfur
Sour sodium, stirring mixing 3-5h, obtains compound silica gel binding agent standby；
（3）Step is added after mixing at the beginning of the surface modification natural flake graphite powder, MCMB and other leftover materials that prepare
Suddenly（2）The compound silica gel bonding agent of preparation, is combined material dried after ball milling mixing 1-2h, is completely dried rear material in 200-
Through full automatic press band wire one-shot forming under 220MPa pressure, subsequent base substrate vacuum high-temperature sintering is processed, and obtains final product described carbon brush
Material.
3. a kind of preparation method of quiet anlistatig copper-base graphite carbon brush for electric machine as claimed in claim 2, it is characterised in that
Described step（3）Middle base substrate vacuum high-temperature sintering condition is：Vacuum：5-15Pa, sintering temperature are 925-950 DEG C, pressure
For 8-10MPa, sintering time is 30-40min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610927140.2A CN106505393A (en) | 2016-10-31 | 2016-10-31 | A kind of quiet anlistatig copper-base graphite carbon brush for electric machine and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610927140.2A CN106505393A (en) | 2016-10-31 | 2016-10-31 | A kind of quiet anlistatig copper-base graphite carbon brush for electric machine and preparation method thereof |
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| Publication Number | Publication Date |
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| CN106505393A true CN106505393A (en) | 2017-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610927140.2A Pending CN106505393A (en) | 2016-10-31 | 2016-10-31 | A kind of quiet anlistatig copper-base graphite carbon brush for electric machine and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108832439A (en) * | 2018-07-02 | 2018-11-16 | 汉寿县祥顺碳制品有限公司 | A kind of automotive electronics fan carbon brush used for electric engine and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101656385A (en) * | 2009-10-20 | 2010-02-24 | 丽水市长新电器制造有限公司 | Ultra-abrasion resistant multifunctional nano carbon brush and preparation method thereof |
| CN105140752A (en) * | 2015-06-25 | 2015-12-09 | 合肥蓝科新材料有限公司 | Highly-compact highly-conductive motor carbon brush material blended with lithium iron phosphate and preparation method of material |
| CN105733107A (en) * | 2016-05-04 | 2016-07-06 | 安徽省康利亚股份有限公司 | Efficient flame-retardant cable material for railway locomotive |
-
2016
- 2016-10-31 CN CN201610927140.2A patent/CN106505393A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101656385A (en) * | 2009-10-20 | 2010-02-24 | 丽水市长新电器制造有限公司 | Ultra-abrasion resistant multifunctional nano carbon brush and preparation method thereof |
| CN105140752A (en) * | 2015-06-25 | 2015-12-09 | 合肥蓝科新材料有限公司 | Highly-compact highly-conductive motor carbon brush material blended with lithium iron phosphate and preparation method of material |
| CN105733107A (en) * | 2016-05-04 | 2016-07-06 | 安徽省康利亚股份有限公司 | Efficient flame-retardant cable material for railway locomotive |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108832439A (en) * | 2018-07-02 | 2018-11-16 | 汉寿县祥顺碳制品有限公司 | A kind of automotive electronics fan carbon brush used for electric engine and preparation method thereof |
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Application publication date: 20170315 |