CN106549283A - A kind of friction film has resin type electrical carbon material of self-regeneration function and preparation method thereof - Google Patents
A kind of friction film has resin type electrical carbon material of self-regeneration function and preparation method thereof Download PDFInfo
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- CN106549283A CN106549283A CN201610969459.1A CN201610969459A CN106549283A CN 106549283 A CN106549283 A CN 106549283A CN 201610969459 A CN201610969459 A CN 201610969459A CN 106549283 A CN106549283 A CN 106549283A
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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
- H01R39/22—Contacts for co-operation with commutator or slip-ring, e.g. contact brush characterised by the material thereof incorporating lubricating or polishing ingredient
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/14—Polyepoxides
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/20—Polyamides
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0022—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof obtained by a chemical conversion or reaction other than those relating to the setting or hardening of cement-like material or to the formation of a sol or a gel, e.g. by carbonising or pyrolysing preformed cellular materials based on polymers, organo-metallic or organo-silicon precursors
- C04B38/0025—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof obtained by a chemical conversion or reaction other than those relating to the setting or hardening of cement-like material or to the formation of a sol or a gel, e.g. by carbonising or pyrolysing preformed cellular materials based on polymers, organo-metallic or organo-silicon precursors starting from inorganic materials only, e.g. metal foam; Lanxide type products
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5001—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with carbon or carbonisable materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/65—Coating or impregnation with inorganic materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
Abstract
The invention discloses a kind of friction film has resin type electrical carbon material of self-regeneration function and preparation method thereof.The material strengthens phase, pore-forming additive by resinoid bond phase, conductive lubrication and constitutes, and its typical preparation technology is：First, the pre-buried pore creating material in the formula of electrical carbon material, is obtained the micro- pore of the cancellated UNICOM of class " spider silk " in carbon brush blank；Vacuum impregnation technique is adopted again, and sulfonated graphene/aqueous resin solution fixed point is incorporated in electrical carbon material base substrate；After most Jing gradient increased temperatures technique by sulfonated graphene " rivet " in electrical carbon base substrate micropore inwall and endoporus.The current-carrier wear rate of electrical carbon material prepared by the present invention is about the 50% of same type active service electrical carbon material, there is self-lubricating, self-healing, high abrasion and press down certainly arc, realize the purpose for improving the integrality of friction film between friction pair for introducing sulfonated graphene the day after tomorrow.
Description
One technical field
The invention belongs to electrical carbon field of new, more particularly to a kind of friction film has the resin type electrical carbon of self-repair function
Material and preparation method thereof.
Two background technologies
Electrical carbon material is, with charcoal and graphite as aggregate, to be aided with binding agent for continuous phase, obtained in Jing shapings, different heat treatment
One class specific functionality electrician's consumable accessory.Which is made sliding contact with commutator or slip ring and forms a kind of conductive part for electrically connecting
Part, used as the sliding contact body for importing and exporting electric current, electrical carbon material is the decisive position that motor runs well, and is whole motor
" heart " part.With the fast development and the continuous improvement of industrialized level of science and technology, as staff extension fixture
Electric tool, plays positive role in industrialization is built.But existing high power instrument motor exist current density it is bigger than normal,
Match somebody with somebody the electrical carbon material of pair because material homogenieity is poor with which, often result in friction pair fluctuation of service, electrical carbon material service life is short etc.
Defect.To improve the high rotating speed of electric-tool machine, high power and high wear-resistant commutation ability, widely used carbonaceous in industry
Resin type highly resistant material is used as the first-selected electrical carbon material for matching such motor.But, such material is because of interface cohesion and web shaped material
Often result in that abrasion resistance is poor, active suppression electric spark performance is not good with own characteristics such as property differences and friction film lacks and reviews one's lessons by oneself complementary energy
The defects such as power, fail solution electrical carbon material and use defect problem.
Therefore, it is to solve the problems, such as drawbacks described above, the present invention improves rubbing surface from the surface defect for actively adjusting friction film
Thermal conductivity angle is started with, it is proposed that " congenital active pore-creating ", " sulfonated graphene will be introduced outside the day after tomorrow " and " friction film sustainable supply "
New method, i.e., pre-buried first pore creating material pore-creating prepares resin type electrical carbon material technique according to existing, in electrical carbon material formula
Add appropriate pore creating material, UNICOM's micropore of similar spider mesh-like is successfully introduced in carbon brush blank；Next adopts vacuum impregnation
Technique, sulfonated graphene/aqueous resin solution fixed point is incorporated in resin type electrical carbon material base substrate；It is solid that secondary auxiliary is carried out again
Change, sulfonated graphene rivet in resin will be dispersed at base substrate micropore inwall using gradient increased temperature solidification.The method is obvious
It is different from correlative study person and directly adds the conventional method that the low-dimensional Carbon Materials such as Graphene are modified in composite inner.
The present invention compared with prior art, on the one hand overcomes and includes sulfonated graphene and be difficult a scattered difficult problem, and design is simultaneously
The resin type electrical carbon material that a kind of friction film has self-regeneration function is prepared, has been on the other hand other pored wood material again
Prepare and process improving provides thinking and theoretical foundation, so as to realize that its function can be changed, while having expanded answering for sulfonated graphene
With scope, be expected to the problems such as solving not enough high power electric tool electrical carbon material service life, excessive heating burn-out motor, also for
The upgrading of resin type electrical carbon material is there is provided theoretical foundation and the foundation of application study.
Three content of the invention
To solve the not enough and defect being previously mentioned in background above technology, the technical problem to be solved in the present invention is to provide
The excellent resin base electrical carbon material of a kind of wear resistence, suppression arc and self-lubricating property, also correspondingly provides the resin base electrical carbon material
The preparation method of material.
To overcome above-mentioned technical problem, technical scheme proposed by the present invention is that a kind of friction film has self-regeneration function
Resin type electrical carbon material and preparation method thereof, is prepared and obtained by the component and aqueous solvent of following mass fraction.
Resinoid bond phase：Bisphenol A type epoxy resin or polyimide resin 20wt%-40wt%；
Conductive lubrication strengthens phase：Crystalline graphite powder or graphous graphite powder 55wt%-80wt% that Jing thickness is selected；
On the basis of above raw material, be also added with dicyandiamide class or acid anhydride type curing agent, pore-forming additive, lubricating film from
Repair conditioning agent.
Wherein dicyandiamide class curing agent accounts for the 2wt%-4wt% of the mass content of binding agent, ammonium hydrogen carbonate pore creating material quality
Content is 1wt%-5wt%.
The preferred version of the present invention is the crystalline graphite powder or graphous graphite powder 60wt%-75wt% that Jing thickness is selected；Heat
Thermosetting resin 20wt%-40wt%；Pore creating material 2wt%-5wt%；Curing agent 3wt%-4wt%；Lubricating film selfreparing conditioning agent
1wt%-10wt%
In the solution of the present invention, it is preferred that graphous graphite powder or crystalline graphite powder that described graphite powder Jing thickness is selected
One or both any mixing.
In above-mentioned electrical carbon material, it is preferred that described thermosetting resin is epoxy resin or polyimide resin.
In above-mentioned electrical carbon material, it is preferred that described pore creating material is ammonium hydrogen carbonate.
In above-mentioned electrical carbon material, it is preferred that described curing agent is dicyandiamide class curing agent.
During a kind of above-mentioned friction film has resin type electrical carbon material of self-regeneration function and preparation method thereof, preferably
, the lubricating film selfreparing conditioning agent in described vacuum impregnation and secondary solidification is by the raw material mixing of following mass fraction
Into：
Sulfonated graphene：50wt%-70wt%；
Aqueous resin solution：20wt%-40wt%；
The present invention with the preparation technology of congenital pre-buried pore-creating, the vacuum impregnation day after tomorrow and secondary solidification as united innovation point, from
The key issue of electrical carbon material：Abrasion resistance is poor, active suppression electric spark performance is not good and friction film lacks self-healing ability
Etc. defect be starting point, it is intended to make polymer matrix composites have concurrently structural behaviour integration performance, so as to preferably go out with once
Solidification blank of material matching degree is high and has the preferable lubricating film selfreparing conditioning agent of dispersion effect concurrently --- sulfonated graphene/aqueous
Resin solution.In addition, impregnating agent is preferably incorporated into by the method that the present invention also especially takes vacuum impregnation and fixed point " rivet "
The process of friction and wear of composite is participated in the middle of the hole of composite, wearability, the suppression arc of electrical carbon material is greatly improved
Property and self-lubricating property.
Used as a total technology design, the present invention also provides a kind of resin type electrical carbon of above-mentioned outer leaching sulfonated graphene
The preparation method of material, comprises the following steps:
A) at normal temperatures, the mixed of graphous graphite powder and pore creating material, binding agent and curing agent is obtained according to certain mass proportioning
Compound material；
B) by above-mentioned mixed material carry out kneading, roller sheet, crush, sieve, be molded after solidified first be obtained once
Processing blank of material.
C) deep processing stoning process is carried out to time processing blank of material：Its surface is polished using sand paper, remove
Some tuberculosis on surface；Then immerse in alcohol, and be put into supersonic cleaning machine and ultrasonic cleaning more than three times is repeated, with alcohol
It is middle to be defined without carbon granule, so as to ensure that material endoporus removes some tuberculosis on surface, surface open pore is got through, is that lubricating film is reviewed one's lessons by oneself
The dipping of multiple conditioning agent creates more preferable condition；
D) sample handled well is carried out into vacuum impregnation lubricating film selfreparing conditioning agent, finally sample is taken out, is done
Dry and secondary solidification, you can this product is obtained.
In the above-mentioned process for preparation of the present invention, pre-buried pore creating material pore-creating and vacuum impregnation lubricating film selfreparing conditioning agent are taken
Method, electrical carbon material is carried out into a certain degree of pore-creating first, sufficient ultrasonic vibration after one-step solidification, is carried out, material is opened and is worked as
In pore, be that the dipping of lubricating film selfreparing conditioning agent creates more preferable condition, directly allow sulfonated graphene to participate in electrical carbon
In wear process between material and copper friction pair, and the adjustable lubricating film for rubbing is formed between, preferably rise
The effect of wear-resistant, oneself suppression arc to anti-attrition.
Compared with prior art, it is an advantage of the current invention that：
(1) novelty of the present invention propose it is a kind of take by it is outer introduce sulfonated graphene theory and method, using water
Property resin solution inlays sulfonated graphene to the hole of one-step solidification blank of material so that sulfonated graphene is directly participated in
The process of friction and wear of electrical carbon material, and play the effect of key.
(2), in preferred version of the invention, choose and add pore creating material to carry out at a certain degree of embedded hole composite
Reason, so can preferably promote the introducing of lubricating film selfreparing conditioning agent.
(3), in preferred version of the invention, the solidification temperature curve of time processing blank is：80 DEG C of insulation 1h；80℃-
120 DEG C, temperature retention time is 1h；120 DEG C -150 DEG C, temperature retention time 1h；150-180 DEG C of insulation 3h.Outer leaching sulfonated graphene/aqueous
The process of electrical carbon material after resin is：Dried process temperature is 80 DEG C, and temperature retention time is 2h.Secondary solidification temperature is 150 DEG C, is protected
The warm time is 3h.During the temperature curve for being dried and solidifying further can avoid solidification process, there is cracking or bubbling in composite
Etc. defect.
Inventor is had found by studying, as there are many micro-bulges, such as Fig. 2 in the surface between composite and friction pair
A (), during wear with current, as the vibrations of friction pair are separated, produces instantaneous high pressure so as to cause electricity between friction pair
Arc discharge phenomenon, the electric arc of generation can corrode composite material surface so as to which the material with carbon element on surface produces oxidation, form arc erosion
Hole, shown in such as Fig. 2 (b).With the rising of composite material surface temperature, reviewed one's lessons by oneself by the lubricating film in outer immersion composite hole
Multiple conditioning agent begins participating in abrasion, fills up certainly arc erosion hole and wear surface, such as Fig. 2 (c), in friction pair with composite
Between form one layer of uniform, smooth lubricating film, such as Fig. 2 (d), this layer of lubricating film make the contact area between friction pair increase, reduction
Because of the generation of arc erosion caused by friction surface out-of-flatness or bad contact, the micro-crack of wear surface is reduced, while
The slickness for being increased rubbing surface by crackle caused by thermal stress is reduced, mechanical wear is effectively reduced and electroerosion is corroded.
Generally speaking, product preparation process of the invention is simple, and raw material is easy to get, and prepares easy, it is often more important that can be very
The friction and abrasion for improving electrical carbon material and erosion property energy of big degree, before specifically impregnating sulfonated graphene/water-base resin
The test parameter of electrical carbon material such as table 1 afterwards；Not only solve the not wear-resistant of existing like product above market, spark it is big, to rubbing
The big defect of Accessory injury is wiped, while meeting the use requirement of high power electric tool.With broader market application foreground.
Four description of the drawings
Fig. 1 is wear surface SEM photograph (a) of the electrical carbon material that the present invention is not impregnated with sulfonated graphene/water-base resin, is implemented
Example 3；Wear surface SEM photograph (b) of immersion lubrication film selfreparing conditioning agent composite, embodiment 1；
Fig. 2 is the mechanism figure that lubricating film selfreparing conditioning agent participates in fretting wear；
Fig. 3 is to being not impregnated with (embodiment 3) (left side)/dipping (embodiment 1) on HUNC-1 electric tools emulation dynamometer machine
The composite of (right side) lubricating film selfreparing conditioning agent carries out the wear surface figure after military service test experiments.
Five specific embodiments
For the ease of understanding the present invention, more complete is made to the present invention below in conjunction with Figure of description and preferred embodiment
Face, meticulously describe, but protection scope of the present invention is not limited to embodiment in detail below.
Unless otherwise defined, the implication that all technical terms used hereinafter are generally understood that with those skilled in the art
It is identical.Technical term used herein is intended merely to the purpose for describing specific embodiment, is not intended to limit the present invention
Protection domain.
Unless otherwise specified, the various raw material used in the present invention, reagent, instrument and equipment etc. can pass through city
Field is commercially available or can be prepared by existing method.
Experiment condition:
HUNC-1 electric tools emulate dynamometer machine
Rated voltage:240V
Rated power:2800W
Rotating speed:2000-10000r/min
Sensing chamber's indoor temperature:18℃
Air humidity:76%
Size of sample：15.4cm×10.4cm×6.2cm
Embodiment 1：
A kind of electrical carbon material of the present invention, the electrical carbon material are prepared by the aqueous solvent of the component and surplus of following mass fraction
Form：
| Conductive lubrication strengthens phase | 75wt% |
| Resinoid bond phase | 25wt% |
| Pore-forming additive (additional) | 2wt% |
| Curing agent (additional) | 3wt% |
| Impregnating agent (additional) | 1% |
Above-mentioned filler chooses the graphous graphite powder that Jing thickness is selected.
Above-mentioned thermosetting resin chooses epoxy resin, and mass fraction is 25%.
Above-mentioned pore creating material is ammonium hydrogen carbonate, and curing agent is dicyandiamide.Feed postition is to add ammonium hydrogen carbonate pore creating material
Carry out in graphous graphite powder it is dry-mixed, by dicy-curing agent add epoxy resin in the middle of.
Above-mentioned lubricating film selfreparing conditioning agent is mixed by the raw material of following mass fraction：
Sulfonated graphene solution：60wt%；
Aqueous epoxy resins solution：40wt%；
The preparation method of the above-mentioned electrical carbon material of the present embodiment, comprises the following steps：
A) at normal temperatures, the mixed of graphous graphite powder and pore creating material, binding agent and curing agent is obtained according to certain mass proportioning
Compound material；
B) by above-mentioned mixed material carry out kneading, roller sheet, crush, sieve, be molded after carry out solidifying for the first time and be obtained one
Secondary processing blank of material.
C) stoning process is processed to time processing blank of material：Its surface is polished using sand paper, remove table
Some tuberculosis in face；
D) sample after above-mentioned process is immersed in alcohol, and ultrasonic cleaning three times in being put into supersonic cleaning machine, is repeated
More than, it is defined without carbon granule in alcohol, so as to ensure that material endoporus removes some tuberculosis on surface, gets through surface open pore,
Dipping for lubricating film selfreparing conditioning agent creates more preferable condition；
E) sample handled well is carried out into vacuum impregnation lubricating film selfreparing conditioning agent, finally sample is taken out, is done
Dry and secondary solidification, you can this product is obtained.
F) carry out performance test, and be put into HUNC-1 electric tools emulation dynamometer machine carrying out wear with current experiment to product.
Test data is as shown in the table：
Remarks：Test result after when grade of spark is wear with current 4h
Embodiment 2：
A kind of electrical carbon material of the present invention, the electrical carbon material are prepared by the aqueous solvent of the component and surplus of following mass fraction
Form：
| Filler | 75wt% |
| Thermosetting resin | 25wt% |
| Pore creating material (additional) | 2wt% |
| Curing agent (additional) | 3wt% |
| Impregnating agent (additional) | 1% |
Above-mentioned filler chooses the graphous graphite powder that Jing thickness is selected.
Above-mentioned thermosetting resin chooses epoxy resin, and mass fraction is 25wt%.
Above-mentioned pore creating material is ammonium hydrogen carbonate, and curing agent is dicyandiamide.Feed postition is to add ammonium hydrogen carbonate pore creating material
Carry out in graphous graphite powder it is dry-mixed, by dicy-curing agent add epoxy resin in the middle of.
Above-mentioned impregnating agent is entirely aqueous epoxy resins solution.
The preparation method of the above-mentioned electrical carbon material of the present embodiment, comprises the following steps：
A) at normal temperatures, the mixed of graphous graphite powder and pore creating material, binding agent and curing agent is obtained according to certain mass proportioning
Compound material；
B) by above-mentioned mixed material carry out kneading, roller sheet, crush, sieve, be molded after carry out solidifying for the first time and be obtained one
Secondary processing blank of material.
C) stoning process is processed to time processing blank of material：Its surface is polished using sand paper, remove table
Some tuberculosis in face；
D) sample after above-mentioned process is immersed in alcohol, and ultrasonic cleaning three times in being put into supersonic cleaning machine, is repeated
More than, it is defined without carbon granule in alcohol, so as to ensure that material endoporus removes some tuberculosis on surface, gets through surface open pore,
More preferable condition is created in introducing for impregnating agent；
E) sample handled well is carried out into vacuum impregnation impregnating agent, finally sample is taken out, be dried and secondary solidification,
Can be prepared by this product.
F) carry out performance test, and be put into HUNC-1 electric tools emulation dynamometer machine carrying out wear with current experiment to product.
Test data is as shown in the table：
Remarks：Test result after when grade of spark is wear with current 4h
Embodiment 3：
A kind of electrical carbon material of the present invention, the electrical carbon material are prepared by the aqueous solvent of the component and surplus of following mass fraction
Form：
| Filler | 75wt% |
| Thermosetting resin | 25wt% |
| Pore creating material (additional) | 2wt% |
| Curing agent (additional) | 3wt% |
| Impregnating agent (additional) | 0% |
Above-mentioned filler chooses the graphous graphite powder that Jing thickness is selected.
Above-mentioned thermosetting resin chooses epoxy resin, and mass fraction is 25wt%.
Above-mentioned pore creating material is ammonium hydrogen carbonate, and curing agent is dicyandiamide.Feed postition is to add ammonium hydrogen carbonate pore creating material
Carry out in graphous graphite powder it is dry-mixed, by dicy-curing agent add epoxy resin in the middle of.
The preparation method of the above-mentioned electrical carbon material of the present embodiment, comprises the following steps：
A) at normal temperatures, the mixed of graphous graphite powder and pore creating material, binding agent and curing agent is obtained according to certain mass proportioning
Compound material；
B) by above-mentioned mixed material carry out kneading, roller sheet, crush, sieve, be molded after carry out solidifying for the first time and be obtained not
The electrical carbon material of immersion lubrication film selfreparing conditioning agent.
C) carry out performance test, and be put into HUNC-1 electric tools emulation dynamometer machine carrying out wear with current experiment to product.
Test data is as shown in the table：
Remarks：Test result after when grade of spark is wear with current 4h.
Claims (9)
1. a kind of friction film has resin type electrical carbon material of self-repair function and preparation method thereof, it is characterised in that by following
The raw material composition of mass fraction：
Resinoid bond phase：Bisphenol A type epoxy resin or polyimide resin 20wt%-40wt%；
Conductive lubrication strengthens phase：Crystalline graphite powder or graphous graphite powder 55wt%-80wt% that Jing thickness is selected；
Pore-forming additive：Ammonium hydrogen carbonate or ammonium nitrate 1wt%-5wt%；
On the basis of above raw material, pore-forming additive, dicyandiamide class or acid anhydride type curing agent, lubricating film selfreparing are also added with
Conditioning agent, Jing kneadings, granulation, shaping and curing disposable are obtained resin type electrical carbon material blank, using vacuum impregnation technology, are obtained
Draw outward the resin type electrical carbon material of sulfonated graphene.
2. friction film as claimed in claim 1 has resin type electrical carbon material of self-regeneration function and preparation method thereof, its
It is characterised by, described binding agent is thermosetting epoxy resin or polyimide resin 20wt%-40wt%.
3. a kind of friction film as claimed in claim 1 has resin type electrical carbon material and its preparation side of self-regeneration function
Method, it is characterised in that described ammonium hydrogen carbonate (or ammonium nitrate) is：1wt%-5wt%.
4. friction film as claimed in claim 1 has resin type electrical carbon material of self-regeneration function and preparation method thereof, its
It is characterised by, described dicyandiamide class or acid anhydride type curing agent account for the 2wt%～4wt% of binding agent mass content.
5. friction film as claimed in claim 1 has resin type electrical carbon material of self-regeneration function and preparation method thereof, its
It is characterised by, described lubricating film selfreparing conditioning agent is sulfonated graphene and the mixed solution of water-base resin, the two solution body
Product percentage is 3:2.
6. a kind of friction film has resin type electrical carbon material and its preparation side of self-regeneration function as claimed in claim 5
Method, it is characterised in that it is 1wt%- that described lubricating film selfreparing conditioning agent accounts for the percentage composition of one-step solidification blank quality
10wt%.
7. a kind of friction film described in any one of claim 1-6 has the resin type electrical carbon material and its system of self-regeneration function
Preparation Method, it is characterised in that including following preparation process：
A) at normal temperatures, the mixture of graphous graphite powder and pore creating material, binding agent and curing agent is obtained according to certain mass proportioning
Material；
B) by above-mentioned mixed material carry out kneading, roller sheet, crush, sieve, be molded after solidified prepared time processing first
Base substrate material；
C) deep processing stoning process is carried out to time processing blank of material：Its surface is polished using sand paper, remove surface
Some tuberculosis；Then immerse in alcohol, and be put into supersonic cleaning machine and ultrasonic cleaning more than three times is repeated, with nothing in alcohol
Carbon granule is defined, and so as to ensure that material endoporus removes some tuberculosis on surface, gets through surface open pore, is that lubricating film reviews one's lessons by oneself polyphony
The dipping of section agent creates more preferable condition；
D) sample handled well is carried out into vacuum impregnation lubricating film selfreparing conditioning agent, finally sample is taken out, be dried and
Secondary solidification, you can this product is obtained.
8. a kind of friction film has resin type electrical carbon material and its preparation side of self-regeneration function as claimed in claim 6
Method, it is characterised in that the solidification temperature curve of time processing blank is：80 DEG C of insulation 1h；80 DEG C -120 DEG C, temperature retention time is
1h；120 DEG C -150 DEG C, temperature retention time 1h；150-180 DEG C of insulation 3h.
9. a kind of friction film has resin type electrical carbon material and its preparation side of self-regeneration function as claimed in claim 6
Method, it is characterised in that the time of ultrasonic vibration is 1h-2h；Vacuum impregnation process evacuated pressure is -0.1MPa, and follow-up is dry
Dry treatment temperature is 80 DEG C, and temperature retention time is 2h, and secondary solidification temperature is 150 DEG C, and temperature retention time is 3h.
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