CN107118516A - A kind of non-dusting brush and preparation method thereof - Google Patents

A kind of non-dusting brush and preparation method thereof Download PDF

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Publication number
CN107118516A
CN107118516A CN201710471985.XA CN201710471985A CN107118516A CN 107118516 A CN107118516 A CN 107118516A CN 201710471985 A CN201710471985 A CN 201710471985A CN 107118516 A CN107118516 A CN 107118516A
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brush
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梁国正
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Suzhou University
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Suzhou University
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Priority to CN201811362477.9A priority Critical patent/CN109486115A/en
Priority to CN201811467950.XA priority patent/CN109354833A/en
Priority to CN201811467949.7A priority patent/CN109627762A/en
Priority to CN201710471985.XA priority patent/CN107118516A/en
Priority to CN201811231959.0A priority patent/CN109517334A/en
Publication of CN107118516A publication Critical patent/CN107118516A/en
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
    • C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • C08G59/14—Polycondensates modified by chemical after-treatment
    • C08G59/1433—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds
    • C08G59/1438—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds containing oxygen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • C08G59/14—Polycondensates modified by chemical after-treatment
    • C08G59/1433—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds
    • C08G59/1477—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • C08G59/14—Polycondensates modified by chemical after-treatment
    • C08G59/1433—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds
    • C08G59/1483—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds containing sulfur
    • 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
    • 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
    • H01R39/24—Laminated contacts; Wire contacts, e.g. metallic brush, carbon fibres
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2231—Oxides; Hydroxides of metals of tin
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3009—Sulfides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/001—Conductive additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/22—Halogen free composition
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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Abstract

The invention provides a kind of non-dusting brush and preparation method thereof, based on cyanate, polyimides, with reference to epoxy resin, pass through the selection compatibility of resin matrix, with reference to rational preparation technology, the brush that extruding pelletization is molded preparation again possesses excellent anti-wear performance, heat resistance, while having good electrical property；Available for high-quality, high request motor, engine.

Description

A kind of non-dusting brush and preparation method thereof
Technical field
The invention belongs to power tool accessory technical field, and in particular to a kind of non-dusting brush and preparation method thereof.
Background technology
Current potentiometer product, more particularly to Aero-Space, weaponry etc. are to special organic solid potentiometer, glass Glaze potentiometer has very strict technical requirements, and the output voltage signal of adjustment potentiometer must very accurately and reliably, its skill Art requirement and the brush of potentiometer are closely related, thus requirement of the potentiometer to brush must simultaneously meet apparent size, resistance, The requirement of many indexs such as wear-resistant coefficient, compression strength, smoothing factor, collision and vibrations.
Brush is divided into soft brush, middle hard brush and hard brush by the soft or hard of material；It is divided into by the color of brush Black electrical brush (being made of pure carbon graphite material) and color brush (being made of the metal materials such as copper and graphite)；By brush material Difference, can be divided into：(1) electrographite brush, (2) electrographite brush, (3) metal-graphite brush.In the prior art, it is general to use Carbon, graphite composite powder are base-material, and using resin as adhesives, brush is manufactured through kneading, milling, shaping and solidification.
Existing brush performance is poor, and stability is bad, and brush unit pressure is too high, and resistance is big, hardness is high, causes electricity The abrasion aggravation of machine brush, unit pressure is too small, contacts unstable, commutation ability is poor, mechanical spark easily occurs；Particularly Wear no resistance, commutation ability is poor, poor anti jamming capability, heat resistance not enough, it is impossible to meet high performance motor to the various of brush It is required that.
The content of the invention
The invention provides a kind of non-dusting brush and preparation method thereof, based on cyanate, polyimides, with reference to epoxy Resin, by the selection compatibility of resin matrix, with reference to rational preparation technology, the brush that extruding pelletization is molded preparation again possesses excellent Different anti-wear performance, heat resistance, while having good electrical property；Available for high-quality, high request motor, engine.
To achieve the above object of the invention, the present invention is adopted the following technical scheme that：A kind of preparation method of non-dusting brush, including Following steps：
（1）Ethylene bis stearamide is added in cyanate, 110 DEG C are stirred 5 minutes, then add Hostathion, 90 DEG C of stirrings 10 Minute；Anacardol, pungent two mercaptan of 1,8- are added, after stirring 30 minutes, norbornene capped polyimides are added, continues to stir 2 hours, triethanolamine is then added in 115 DEG C, stirring obtains polymeric matrix after 15 minutes；Add graphene oxide into epoxy In resin, 160 DEG C of stirrings add methyl silicon sodium alcoholate and aliphatic amine polyoxyethylene ether after 1 hour, and 120 DEG C are stirred 2 hours, Ran Houjia Enter paraffin, stir 1 hour, add polymeric matrix, stir 20 minutes, obtain modified resin system；
（2）Under nitrogen protection, six ammonium chloroiridates of mixing, dioctyl tin, triscyclopentadienyl samarium, ethanol and hexamethylene；It is then refluxed for stirring 1 Hour, then add potassium hydroxide-ethanol solution and TBHP；Reaction naturally cools to room temperature after 4 hours, adds Ethyl acetate coagulation is centrifuged；Resulting dispersion system in ethanol is scattered in after centrifugal sediment is washed；Added in dispersion poly- Vinyl alcohol, hydrogen peroxide, 50 DEG C are stirred 5 hours, then add NIPA, tetraphenylporphyrin iron, and 60 DEG C of stirrings 2 are small When, uramit is then added, then return stirring 3 hours is concentrated to give the concentrate of solid content 80%；Concentrate is carried out Hypergravity processing；Then it is freeze-dried, obtains nano powder；The rotating speed of the hypergravity processing is 35000~40000rpm；Concentration The flow of thing is 80~90mL/min；
（3）By polytetrafluoroethylene (PTFE), five cobalt sulfides, nano powder, modified resin system, carbon fiber, polyphenylene sulfide, DMDS generation Added after carbaminate, the dry grinding of ethylene vinyl acetate copolymer are uniform in extruder, brush is obtained in 175 DEG C of extrusions Composition particle；Brush composition particle obtains non-dusting brush by hot pressing, cutting, polishing.
The invention also discloses a kind of nanometer conductive powder and preparation method thereof, comprise the following steps, under nitrogen protection, mix Close six ammonium chloroiridates, dioctyl tin, triscyclopentadienyl samarium, ethanol and hexamethylene；Stirring 1 hour is then refluxed for, potassium hydroxide is then added Ethanol solution and TBHP；Reaction naturally cools to room temperature after 4 hours, add the centrifugation of ethyl acetate coagulation；Will be from Resulting dispersion system in ethanol is scattered in after the washing of heart sediment；Polyvinyl alcohol, hydrogen peroxide, 50 DEG C of stirrings are added in dispersion 5 hours, NIPA, tetraphenylporphyrin iron are then added, 60 DEG C are stirred 2 hours, then add uramit, are returned Stream stirring 3 hours, is then concentrated to give the concentrate of solid content 80%；Concentrate is subjected to hypergravity processing；Then freeze dry It is dry, obtain nano powder；The rotating speed of the hypergravity processing is 35000~40000rpm；The flow of concentrate is 80~90mL/ min。
The invention also discloses a kind of polymeric matrix and preparation method thereof, comprise the following steps, by ethylene stearic bicine diester Amine is added in cyanate, and 110 DEG C are stirred 5 minutes, then adds Hostathion, and 90 DEG C are stirred 10 minutes；Add anacardol, 1,8- pungent Two mercaptan, after stirring 30 minutes, add norbornene capped polyimides, continue to stir 2 hours, then in 115 DEG C of additions Triethanolamine, stirring obtains polymeric matrix after 15 minutes.
The invention also discloses a kind of brush composition and preparation method thereof, comprise the following steps：
（1）Ethylene bis stearamide is added in cyanate, 110 DEG C are stirred 5 minutes, then add Hostathion, 90 DEG C of stirrings 10 Minute；Anacardol, pungent two mercaptan of 1,8- are added, after stirring 30 minutes, norbornene capped polyimides are added, continues to stir 2 hours, triethanolamine is then added in 115 DEG C, stirring obtains polymeric matrix after 15 minutes；Add graphene oxide into epoxy In resin, 160 DEG C of stirrings add methyl silicon sodium alcoholate and aliphatic amine polyoxyethylene ether after 1 hour, and 120 DEG C are stirred 2 hours, Ran Houjia Enter paraffin, stir 1 hour, add polymeric matrix, stir 20 minutes, obtain modified resin system；
（2）Under nitrogen protection, six ammonium chloroiridates of mixing, dioctyl tin, triscyclopentadienyl samarium, ethanol and hexamethylene；It is then refluxed for stirring 1 Hour, then add potassium hydroxide-ethanol solution and TBHP；Reaction naturally cools to room temperature after 4 hours, adds Ethyl acetate coagulation is centrifuged；Resulting dispersion system in ethanol is scattered in after centrifugal sediment is washed；Added in dispersion poly- Vinyl alcohol, hydrogen peroxide, 50 DEG C are stirred 5 hours, then add NIPA, tetraphenylporphyrin iron, and 60 DEG C of stirrings 2 are small When, uramit is then added, then return stirring 3 hours is concentrated to give the concentrate of solid content 80%；Concentrate is carried out Hypergravity processing；Then it is freeze-dried, obtains nano powder；The rotating speed of the hypergravity processing is 35000~40000rpm；Concentration The flow of thing is 80~90mL/min；
（3）By polytetrafluoroethylene (PTFE), five cobalt sulfides, nano powder, modified resin system, carbon fiber, polyphenylene sulfide, DMDS generation Added after carbaminate, the dry grinding of ethylene vinyl acetate copolymer are uniform in extruder, brush is obtained in 175 DEG C of extrusions Composition.
The invention also discloses a kind of modified resin system and preparation method thereof, comprise the following steps, ethylene is double stearic Acid amides is added in cyanate, and 110 DEG C are stirred 5 minutes, then adds Hostathion, and 90 DEG C are stirred 10 minutes；Add anacardol, 1,8- Pungent two mercaptan, after stirring 30 minutes, adds norbornene capped polyimides, continues to stir 2 hours, then adds in 115 DEG C Enter triethanolamine, stirring obtains polymeric matrix after 15 minutes；Add graphene oxide into epoxy resin, 160 DEG C of stirrings 1 are small When after add methyl silicon sodium alcoholate and aliphatic amine polyoxyethylene ether, 120 DEG C are stirred 2 hours, then add paraffin, are stirred 1 hour, plus Enter polymeric matrix, stir 20 minutes, obtain modified resin system.
In above-mentioned technical proposal, pungent two mercaptan of ethylene bis stearamide, cyanate, Hostathion, anacardol, 1,8-, drop ice Piece alkenyl capped polyimides, triethanolamine, graphene oxide, epoxy resin, methyl silicon sodium alcoholate, aliphatic amine polyoxyethylene ether, The mass ratio of paraffin is 12: 100: 3: 8: 8: 40: 2: 2: 50: 12: 6: 8；
It is six ammonium chloroiridates, dioctyl tin, triscyclopentadienyl samarium, ethanol, hexamethylene, potassium hydroxide-ethanol solution, TBHP, poly- Vinyl alcohol, hydrogen peroxide, NIPA, tetraphenylporphyrin iron, the mass ratio of uramit are 20: 75: 5: 200: 150 ∶20∶15∶20∶10∶12∶2∶15；
Polytetrafluoroethylene (PTFE), five cobalt sulfides, nano powder, modified resin system, carbon fiber, polyphenylene sulfide, DMDS are for amino Zinc formate, the mass ratio of ethylene vinyl acetate copolymer are 5: 3: 32: 100: 2: 11: 2: 15.
In the present invention, the mass concentration of potassium hydroxide is 4% in the potassium hydroxide-ethanol solution；The fatty amine polyoxy The molecular weight of vinethene is 2500~3500；The molecular weight of the polyvinyl alcohol is 1500~2000.The present invention is poly- by adding Hydrogen peroxide is added while vinyl alcohol, tetraphenylporphyrin iron is added after mixing, in addition to increasing conductive powder body surface-active, more It is important that the molecular weight of polyvinyl alcohol has been reduced has certain degradation to the strand of polyvinyl alcohol, this is to rear Continuous electrical-conductive nanometer powder is helped with after mixed with resin, improving the relevant key of dispersive property and continuous performance of metal oxide, especially It is the influence for avoiding hot property, the polyvinyl alcohol of anti-wear performance difference to overall performance, has given full play to polyvinyl alcohol in conducting powder Body surface face combines other compounds and improves activity and increase compatibility to embody the advantage of good electrical properties, it is thus also avoided that its Participate in resin body and cause the problem of heat resistance, wearability decline.
The hot pressing condition of the present invention is small for 1MPa/155 DEG C of solidification+2MPa/180 DEG C of solidifications 1.5~2.0 in 2.5~3.0 hours When+1.5MPa/230 DEG C solidify 3.5~4.5 hours, with temperature rise, points three sections progressively solidify, the excellent modification of availability Resin；Unmodified resin elongation percentage is low, fragility is big, the brush of preparation not endurance, therefore should not use, two allyls of existing addition Based compound, diamine, epoxy resin can cause the reduction of heat resistance or humidity resistance.Modified epoxy/the cyanate of the present invention/ Polyimide resin is on the premise of its heat resistance and bending modulus are unaffected, and its toughness is improved significantly, is especially dropped Low brush friction cracking risk.
The invention also discloses the product according to above-mentioned preparation method preparation and a kind of motor brush structure, the electricity Brush configuration includes brush prepared by above-mentioned preparation method, in addition to brushgear housing.
The present invention devises several micromolecular compounds in addition to high performance resin, with reference to polymerization technology, poly- During closing Polymerization induced phase separation, system can form two-arch tunnel structure, and can occur under certain condition opposite The phenomenon turned, i.e., turn into the auxiliary continuous phase of system as a small amount of component reaction formation thermoplastic unit.Because reversion phase structure is Netted continuous phase is constituted by a small amount of thermoplastic unit and is constituted, and the mechanical property of system and heat, electrical property are often with master Based on continuous phase, a small amount of thermoplastic unit is controlled by parameter designing, this structure is conducive to increasing substantially for system performance.
Existing anacardol has certain toughness reinforcing, plasticization effect, but due to the limitation of structure so that aathermoset resin system is added System crosslink density, mechanical property and heat resistance have declined afterwards, have run counter to the use original intention of high performance heat resistant polymer；Root According to technical scheme, there is stronger activity using anacardol, pungent two mercaptan of 1,8-, first can occur with cyanate anti- Should, then occur graft reaction with epoxy resin, toughness and heat-resist long-chain and benzene ring structure are inside introduced, plays interior Toughening effect can also reduce hardness, and modified purpose of shooting the arrow at the target is carried out to matrix resin so as to reach, and methyl silicon sodium alcoholate with The combination of aliphatic amine polyoxyethylene ether then avoids excessive flexibility, solidfied material is had high heat resistance and mechanical strength, to meet Brush material heat resistance, workability, rub resistance, the technical requirements of water resistance.
The present invention uses rare earth modified conductive filler first, manufactures brush material then in conjunction with resin matrix, passes through the change of samarium Learning activity causes the powder of different properties and organic molecule and polymer to form uniform network structure, exists beneficial to each constituent element The interaction of interface and mutually wetting, make whole material system be in the most steady state of thermodynamics, in brush material high temperature work The carbide and small molecule material matter produced under condition is few, so the heat fading of coefficient of friction is small, particularly, in powder without Rare earth is added in resin system, rare earth produces sudden strain of a muscle square crystal structure oxide in high temperature and is similar to lamellar graphite, with high temperature Lubrication, while avoiding the influence polymerizeing to resin matrix；So that the product coefficient of friction of the present invention is high and stably, and With reference to metal iridium denatured conductive tin-oxide, brush electrical property can be effectively ensured.
The indices of brush practical application influence each other very greatly, and many index will reach that requirement is extremely difficult simultaneously, than Such as say that brush resistance itself is the smaller the better, but resistance is small, intensity is with regard to impacted step-down.The kind of brush material, proportioning, Method in dispersing uniformity and process in granularity size, process etc. has influence to technical indicator, solution Certainly the key of problem is exactly that can solve the problem that while meet the scheme of all technical requirement, pass through formula with of both technique With reference to can just reach technique effect.
With the implementation of the disabling anti-preparation method of harmful substance (RoHS), ep-type material has not been a demand, but is become Into a kind of requirement of fundamental property, although the regulation of country variant is not quite similar, but be generally uniform.In existing environmental protection In type halogen-free material formula composition, it is typically chosen phosphide and makees flame retardant substitution halogen compounds, but use phosphorous flame-retardant material During material, the inorganic particle that need to generally arrange in pairs or groups just has method by UL-94 test specifications, the inorganic particle arranged in pairs or groups usually hydroxide Thing, the hydroxide more often used is silica and aluminium hydroxide respectively, there is distinct disadvantage during for brush, except shadow Ring outside electrical property, can more influence wear-resisting, heat resistance；The present invention is by the cooperation between organic matter, such as P elements-modification is led The synergy of electric metal, limits the usage ratio of several compounds, realizes the halogen-free flameproof of brush, reach V0 grades.
In the case of volume is less and less, the speed of service is more and more faster, the heat that brush is produced is also increasing, these If heat can not be expelled to external environment in good time, by make brush assembly of electric because temperature is too high have influence on product reliability and caused by Service life lowers.Therefore, how to radiate while improving the heat-resisting stable running to maintain system will become more and more important, because For in the reason for brushgear is damaged, because high temperature causes the ratio of damage or loss of function for example to vibrate, rub far above other Influence caused by the factors such as wiping；Therefore, the exploitation of the high heat resistant substrate material of various demand characteristics is provided simultaneously with, is also brush Industry one of continual Research Emphasis for a long time.
Epoxy is good with CE resin heat resistances, but fragility and water imbibition are not enough, typically by toughening modifying, but can lead Substantially, be present many modified schemes in prior art to pyrogenicity hydraulic performance decline, substantially only for toughness and heat resistance, do not refer to Wearability and electric conductivity, report more not on brush base resin.The present invention passes through triethanolamine and polyphenylene sulfide Use, increase modified heat convertible resin composition hydrophobic property, also pass through reactive mercapto, amido, triazole in addition Phosphorus, being introduced into system can make the crosslink density of resin combination decrease, and coordinate polyphenylene sulfide, ethene-vinyl acetate base Ester copolymer, toughness can increased, so that gained modified resin composition has higher mechanical strength and processing stable Property；In addition, not interfering with the last crosslinking curing of modified resin with a certain proportion of micromolecular compound turns into network structure, instead And the generation of low molecule amount condensation polymer can be avoided；Therefore, by several compounds to polyimide resin, epoxy resin and cyanogen Acid ester resin is modified, and while the heat resistance and intensity of resin is kept, is effectively improved humidity resistance and toughness, together When small molecule reduce the generation of low-molecular-weight polycondensate in thermosetting resin curing process, reduce friction defect and lack with stress Fall into, anti-wear performance is improved to a certain degree.
Passing ratio of the present invention, which is limited, in the molecular structure controls the content of the rigid radicals such as phenyl ring within the specific limits, so that The melt viscosity of resin is reduced, technique processability is improved；And kept due to the rigid structure of resin matrix Good heat resistance, and with good moisture-proof, anti-flammability and reliability, low in-plane thermal coefficient of expansion.It is existing There is technology epoxy to play certain catalytic action to curing reaction of cyanate etc., be conducive to improving monomer in solidification process Conversion ratio, promote curing reaction completion；However, existing modified resin system is existed, reactivity is larger, and the work phase is short Manufacturability issues, this mechanical property, electrical property, practical application to resin system can have adverse effect on.The present invention will 1,8- pungent two mercaptan, PZ and paraffin are incorporated into cyanate/epoxy modified resin, can not only Enough improve the processing performance of uncured resin, additionally it is possible to improve the mechanics of solidified resin, the performance such as heat-resisting；Ethylene stearic bicine diester Pungent two mercaptan of amine, 1,8- can be with resin monomer polymerisation, so as to introduce thennosetting curable beneficial to by certain flexible unit In network structure.The chemical chain structure of the present invention, is conducive to, in the case where heat resistance loss is small, improving the tough of resin material Property, electricity, the performance, such as boiling water boiling 96 hours such as wear-resisting, water-fast, water absorption rate is less than 0.8%.
The use metal composite oxide iridium-tin-samarium oxide nano-particles of the invention are as conductive material, both There is provided brush excellent electric conductivity, again resin matrix can be promoted to form good network structure, so that comprehensive beneficial to brush The many cobalt sulfides added during the raising, especially binding resin pre-polymerization of energy avoid point that existing carbon material exists as conductive agent Dissipate uneven, it is bad with resin system compatibility so that the problem of brush preferably can not reach excellent combination property.Add simultaneously A small amount of carbon material can increase stabilization, the patency of conductive network in favor of the special construction of carbon material, further improve brush electricity Performance.
The present invention carry out resin modified under low temperature in extrusion first, both solved fusion method presence polymerization it is uneven, Easily there is the defect of oligomer, especially by the effect of adding technology and small molecule, solve the reaction of extrusion molding presence Property is weak and the problem of be not used to a variety of properties different compound high polymer melting mixing；By in thermosetting resin main body Add the good thermoplastic resin of hot property not only to have improved performed polymer processability but also avoided polymerization excessive, especially thermoplastic resin The brush that the addition of fat is obtained is easy to polishing processing, and mechanical property is good, and electrical property, hot property are still good；By the present invention The modified resin of preparation is used for after brush preparation, be able to can be obtained with the mixing of conductive powder body well and with reference to curing process The good brush product of homogeneous stabilization, performance especially electrical property, hot property, anti-wear performance, fire resistance.
Because particle diameter is small, specific surface area big, surface energy is high, it is easy to reunite, therefore be difficult to evenly spread to In high polymer material, the method such as existing machinery stirring, banburying, ultrasonic disperse, but dispersion effect is not satisfactory.The present invention is first The activity that metal iridium improves combined oxidation metal is added, conductive powder body and resin matrix are unfavorable on the contrary if do not handled further Mixing, recycle polyvinyl alcohol to handle the surface of particle, while adding NIPA and tetraphenyl PORPHYRIN IRON, different to inorganic filler progress processing from other coupling agents, polyvinyl alcohol occurs on a small quantity under certain condition of the present invention Degraded, has two benefits, one is to avoid macromolecular chain structure that influence electric conductivity is completely covered on particle, and two are and polyureas first Aldehyde can increase the reactivity of NIPA, composite oxides together so that particle surface carries acitve organic matter, Especially in the presence of hydrogen peroxide, the exposure level and effect of metal oxide and micromolecular compound can be improved；Finally lead to Hypergravity processing, the problem of thoroughly solving particle aggregation are crossed, while retaining particle surface active group.Therefore, it is of the invention to obtain To electrical-conductive nanometer powder can be effectively improved and receive the agglomeration of particulate, can be same moreover, receiving the functional group on particulate surface The polymer such as epoxy resin, cyanate, norbornene capped polyimides carry out co-polymeric, substantially increase and receive particulate Dispersiveness and stability in the polymer, from electrical property, heat resistance and anti-wear performance this it appears that.
Embodiment
Embodiment one
A kind of preparation method of non-dusting brush, comprises the following steps：
（1）Ethylene bis stearamide is added in bisphenol A cyanate, 110 DEG C are stirred 5 minutes, then add Hostathion, 90 DEG C are stirred Mix 10 minutes；Anacardol, pungent two mercaptan of 1,8- are added, after stirring 30 minutes, norbornene capped polyimides is added, continues Stirring 2 hours, then adds triethanolamine in 115 DEG C, and stirring obtains polymeric matrix after 15 minutes；Add graphene oxide into In bisphenol A epoxide resin, 160 DEG C of stirrings add methyl silicon sodium alcoholate and aliphatic amine polyoxyethylene ether after 1 hour, and 120 DEG C of stirrings 2 are small When, paraffin is then added, is stirred 1 hour, polymeric matrix is added, stirs 20 minutes, obtains modified resin system；
（2）Under nitrogen protection, six ammonium chloroiridates of mixing, dioctyl tin, triscyclopentadienyl samarium, ethanol and hexamethylene；It is then refluxed for stirring 1 Hour, then add potassium hydroxide-ethanol solution and TBHP；Reaction naturally cools to room temperature after 4 hours, adds Ethyl acetate coagulation is centrifuged；Resulting dispersion system in ethanol is scattered in after centrifugal sediment is washed；Added in dispersion poly- Vinyl alcohol, hydrogen peroxide, 50 DEG C are stirred 5 hours, then add NIPA, tetraphenylporphyrin iron, and 60 DEG C of stirrings 2 are small When, uramit is then added, then return stirring 3 hours is concentrated to give the concentrate of solid content 80%；Concentrate is carried out Hypergravity processing；Then it is freeze-dried, obtains nano powder；The rotating speed of the hypergravity processing is 35000rpm；The stream of concentrate Measure as 80mL/min；
（3）By polytetrafluoroethylene (PTFE), five cobalt sulfides, nano powder, modified resin system, carbon fiber, polyphenylene sulfide, DMDS generation Added after carbaminate, the dry grinding of ethylene vinyl acetate copolymer are uniform in extruder, brush is obtained in 175 DEG C of extrusions Composition particle；Brush composition particle passes through hot pressing（Hot pressing condition be 1MPa/155 DEG C solidification 2.5 hours+2MPa/180 DEG C Solidification+1.5MPa/230 DEG C of solidifications in 2.0 hours 4.5 hours）, cutting, polishing, obtain non-dusting brush.
Embodiment two
A kind of preparation method of non-dusting brush, comprises the following steps：
（1）Ethylene bis stearamide is added in bisphenol A cyanate, 110 DEG C are stirred 5 minutes, then add Hostathion, 90 DEG C are stirred Mix 10 minutes；Anacardol, pungent two mercaptan of 1,8- are added, after stirring 30 minutes, norbornene capped polyimides is added, continues Stirring 2 hours, then adds triethanolamine in 115 DEG C, and stirring obtains polymeric matrix after 15 minutes；Add graphene oxide into In bisphenol A epoxide resin, 160 DEG C of stirrings add methyl silicon sodium alcoholate and aliphatic amine polyoxyethylene ether after 1 hour, and 120 DEG C of stirrings 2 are small When, paraffin is then added, is stirred 1 hour, polymeric matrix is added, stirs 20 minutes, obtains modified resin system；
（2）Under nitrogen protection, six ammonium chloroiridates of mixing, dioctyl tin, triscyclopentadienyl samarium, ethanol and hexamethylene；It is then refluxed for stirring 1 Hour, then add potassium hydroxide-ethanol solution and TBHP；Reaction naturally cools to room temperature after 4 hours, adds Ethyl acetate coagulation is centrifuged；Resulting dispersion system in ethanol is scattered in after centrifugal sediment is washed；Added in dispersion poly- Vinyl alcohol, hydrogen peroxide, 50 DEG C are stirred 5 hours, then add NIPA, tetraphenylporphyrin iron, and 60 DEG C of stirrings 2 are small When, uramit is then added, then return stirring 3 hours is concentrated to give the concentrate of solid content 80%；Concentrate is carried out Hypergravity processing；Then it is freeze-dried, obtains nano powder；The rotating speed of the hypergravity processing is 35000rpm；The stream of concentrate Measure as 90mL/min；
（3）By polytetrafluoroethylene (PTFE), five cobalt sulfides, nano powder, modified resin system, carbon fiber, polyphenylene sulfide, DMDS generation Added after carbaminate, the dry grinding of ethylene vinyl acetate copolymer are uniform in extruder, brush is obtained in 175 DEG C of extrusions Composition particle；Brush composition particle passes through hot pressing（Hot pressing condition be 1MPa/155 DEG C solidification 2.5 hours+2MPa/180 DEG C Solidification+1.5MPa/230 DEG C of solidifications in 1.5 hours 4.5 hours）, cutting, polishing, obtain non-dusting brush.
Embodiment three
A kind of preparation method of non-dusting brush, comprises the following steps：
（1）Ethylene bis stearamide is added in bisphenol A cyanate, 110 DEG C are stirred 5 minutes, then add Hostathion, 90 DEG C are stirred Mix 10 minutes；Anacardol, pungent two mercaptan of 1,8- are added, after stirring 30 minutes, norbornene capped polyimides is added, continues Stirring 2 hours, then adds triethanolamine in 115 DEG C, and stirring obtains polymeric matrix after 15 minutes；Add graphene oxide into In bisphenol A epoxide resin, 160 DEG C of stirrings add methyl silicon sodium alcoholate and aliphatic amine polyoxyethylene ether after 1 hour, and 120 DEG C of stirrings 2 are small When, paraffin is then added, is stirred 1 hour, polymeric matrix is added, stirs 20 minutes, obtains modified resin system；
（2）Under nitrogen protection, six ammonium chloroiridates of mixing, dioctyl tin, triscyclopentadienyl samarium, ethanol and hexamethylene；It is then refluxed for stirring 1 Hour, then add potassium hydroxide-ethanol solution and TBHP；Reaction naturally cools to room temperature after 4 hours, adds Ethyl acetate coagulation is centrifuged；Resulting dispersion system in ethanol is scattered in after centrifugal sediment is washed；Added in dispersion poly- Vinyl alcohol, hydrogen peroxide, 50 DEG C are stirred 5 hours, then add NIPA, tetraphenylporphyrin iron, and 60 DEG C of stirrings 2 are small When, uramit is then added, then return stirring 3 hours is concentrated to give the concentrate of solid content 80%；Concentrate is carried out Hypergravity processing；Then it is freeze-dried, obtains nano powder；The rotating speed of the hypergravity processing is 40000rpm；The stream of concentrate Measure as 80mL/min；
（3）By polytetrafluoroethylene (PTFE), five cobalt sulfides, nano powder, modified resin system, carbon fiber, polyphenylene sulfide, DMDS generation Added after carbaminate, the dry grinding of ethylene vinyl acetate copolymer are uniform in extruder, brush is obtained in 175 DEG C of extrusions Composition particle；Brush composition particle passes through hot pressing（Hot pressing condition be 1MPa/155 DEG C solidification 3.0 hours+2MPa/180 DEG C Solidification+1.5MPa/230 DEG C of solidifications in 2.0 hours 4.5 hours）, cutting, polishing, obtain non-dusting brush.
Example IV
A kind of preparation method of non-dusting brush, comprises the following steps：
（1）Ethylene bis stearamide is added in Bisphenol F cyanate, 110 DEG C are stirred 5 minutes, then add Hostathion, 90 DEG C are stirred Mix 10 minutes；Anacardol, pungent two mercaptan of 1,8- are added, after stirring 30 minutes, norbornene capped polyimides is added, continues Stirring 2 hours, then adds triethanolamine in 115 DEG C, and stirring obtains polymeric matrix after 15 minutes；Add graphene oxide into In bisphenol A epoxide resin, 160 DEG C of stirrings add methyl silicon sodium alcoholate and aliphatic amine polyoxyethylene ether after 1 hour, and 120 DEG C of stirrings 2 are small When, paraffin is then added, is stirred 1 hour, polymeric matrix is added, stirs 20 minutes, obtains modified resin system；
（2）Under nitrogen protection, six ammonium chloroiridates of mixing, dioctyl tin, triscyclopentadienyl samarium, ethanol and hexamethylene；It is then refluxed for stirring 1 Hour, then add potassium hydroxide-ethanol solution and TBHP；Reaction naturally cools to room temperature after 4 hours, adds Ethyl acetate coagulation is centrifuged；Resulting dispersion system in ethanol is scattered in after centrifugal sediment is washed；Added in dispersion poly- Vinyl alcohol, hydrogen peroxide, 50 DEG C are stirred 5 hours, then add NIPA, tetraphenylporphyrin iron, and 60 DEG C of stirrings 2 are small When, uramit is then added, then return stirring 3 hours is concentrated to give the concentrate of solid content 80%；Concentrate is carried out Hypergravity processing；Then it is freeze-dried, obtains nano powder；The rotating speed of the hypergravity processing is 40000rpm；The stream of concentrate Measure as 90mL/min；
（3）By polytetrafluoroethylene (PTFE), five cobalt sulfides, nano powder, modified resin system, carbon fiber, polyphenylene sulfide, DMDS generation Added after carbaminate, the dry grinding of ethylene vinyl acetate copolymer are uniform in extruder, brush is obtained in 175 DEG C of extrusions Composition particle；Brush composition particle passes through hot pressing（Hot pressing condition be 1MPa/155 DEG C solidification 3.0 hours+2MPa/180 DEG C Solidification+1.5MPa/230 DEG C of solidifications in 1.5 hours 4.5 hours）, cutting, polishing, obtain non-dusting brush.
Embodiment five
A kind of preparation method of non-dusting brush, comprises the following steps：
（1）Ethylene bis stearamide is added in bis-phenol E cyanates, 110 DEG C are stirred 5 minutes, then add Hostathion, 90 DEG C are stirred Mix 10 minutes；Anacardol, pungent two mercaptan of 1,8- are added, after stirring 30 minutes, norbornene capped polyimides is added, continues Stirring 2 hours, then adds triethanolamine in 115 DEG C, and stirring obtains polymeric matrix after 15 minutes；Add graphene oxide into In bisphenol A epoxide resin, 160 DEG C of stirrings add methyl silicon sodium alcoholate and aliphatic amine polyoxyethylene ether after 1 hour, and 120 DEG C of stirrings 2 are small When, paraffin is then added, is stirred 1 hour, polymeric matrix is added, stirs 20 minutes, obtains modified resin system；
（2）Under nitrogen protection, six ammonium chloroiridates of mixing, dioctyl tin, triscyclopentadienyl samarium, ethanol and hexamethylene；It is then refluxed for stirring 1 Hour, then add potassium hydroxide-ethanol solution and TBHP；Reaction naturally cools to room temperature after 4 hours, adds Ethyl acetate coagulation is centrifuged；Resulting dispersion system in ethanol is scattered in after centrifugal sediment is washed；Added in dispersion poly- Vinyl alcohol, hydrogen peroxide, 50 DEG C are stirred 5 hours, then add NIPA, tetraphenylporphyrin iron, and 60 DEG C of stirrings 2 are small When, uramit is then added, then return stirring 3 hours is concentrated to give the concentrate of solid content 80%；Concentrate is carried out Hypergravity processing；Then it is freeze-dried, obtains nano powder；The rotating speed of the hypergravity processing is 40000rpm；The stream of concentrate Measure as 80mL/min；
（3）By polytetrafluoroethylene (PTFE), five cobalt sulfides, nano powder, modified resin system, carbon fiber, polyphenylene sulfide, DMDS generation Added after carbaminate, the dry grinding of ethylene vinyl acetate copolymer are uniform in extruder, brush is obtained in 175 DEG C of extrusions Composition particle；Brush composition particle passes through hot pressing（Hot pressing condition be 1MPa/155 DEG C solidification 3.0 hours+2MPa/180 DEG C Solidification+1.5MPa/230 DEG C of solidifications in 2.0 hours 3.5 hours）, cutting, polishing, obtain non-dusting brush.
Embodiment six
A kind of preparation method of non-dusting brush, comprises the following steps：
（1）Ethylene bis stearamide is added in bisphenol A cyanate, 110 DEG C are stirred 5 minutes, then add Hostathion, 90 DEG C are stirred Mix 10 minutes；Anacardol, pungent two mercaptan of 1,8- are added, after stirring 30 minutes, norbornene capped polyimides is added, continues Stirring 2 hours, then adds triethanolamine in 115 DEG C, and stirring obtains polymeric matrix after 15 minutes；Add graphene oxide into In bis-phenol E epoxy resin, 160 DEG C of stirrings add methyl silicon sodium alcoholate and aliphatic amine polyoxyethylene ether after 1 hour, and 120 DEG C of stirrings 2 are small When, paraffin is then added, is stirred 1 hour, polymeric matrix is added, stirs 20 minutes, obtains modified resin system；
（2）Under nitrogen protection, six ammonium chloroiridates of mixing, dioctyl tin, triscyclopentadienyl samarium, ethanol and hexamethylene；It is then refluxed for stirring 1 Hour, then add potassium hydroxide-ethanol solution and TBHP；Reaction naturally cools to room temperature after 4 hours, adds Ethyl acetate coagulation is centrifuged；Resulting dispersion system in ethanol is scattered in after centrifugal sediment is washed；Added in dispersion poly- Vinyl alcohol, hydrogen peroxide, 50 DEG C are stirred 5 hours, then add NIPA, tetraphenylporphyrin iron, and 60 DEG C of stirrings 2 are small When, uramit is then added, then return stirring 3 hours is concentrated to give the concentrate of solid content 80%；Concentrate is carried out Hypergravity processing；Then it is freeze-dried, obtains nano powder；The rotating speed of the hypergravity processing is 40000rpm；The stream of concentrate Measure as 80mL/min；
（3）By polytetrafluoroethylene (PTFE), five cobalt sulfides, nano powder, modified resin system, carbon fiber, polyphenylene sulfide, DMDS generation Added after carbaminate, the dry grinding of ethylene vinyl acetate copolymer are uniform in extruder, brush is obtained in 175 DEG C of extrusions Composition particle；Brush composition particle passes through hot pressing（Hot pressing condition be 1MPa/155 DEG C solidification 3.0 hours+2MPa/180 DEG C Solidification+1.5MPa/230 DEG C of solidifications in 1.5 hours 3.5 hours）, cutting, polishing, obtain non-dusting brush.
In the present invention, pungent two mercaptan of ethylene bis stearamide, cyanate, Hostathion, anacardol, 1,8-, norbornene Capped polyimides, triethanolamine, graphene oxide, epoxy resin, methyl silicon sodium alcoholate, aliphatic amine polyoxyethylene ether, paraffin Mass ratio is 12: 100: 3: 8: 8: 40: 2: 2: 50: 12: 6: 8；
It is six ammonium chloroiridates, dioctyl tin, triscyclopentadienyl samarium, ethanol, hexamethylene, potassium hydroxide-ethanol solution, TBHP, poly- Vinyl alcohol, hydrogen peroxide, NIPA, tetraphenylporphyrin iron, the mass ratio of uramit are 20: 75: 5: 200: 150 ∶20∶15∶20∶10∶12∶2∶15；
Polytetrafluoroethylene (PTFE), five cobalt sulfides, nano powder, modified resin system, carbon fiber, polyphenylene sulfide, DMDS are for amino Zinc formate, the mass ratio of ethylene vinyl acetate copolymer are 5: 3: 32: 100: 2: 11: 2: 15.
In the present invention, the mass concentration of potassium hydroxide is 4% in the potassium hydroxide-ethanol solution；The fatty amine polyoxy The molecular weight of vinethene is 2500~3500；The molecular weight of the polyvinyl alcohol is 1500~2000.
Above-mentioned brush is combined with existing brushgear housing and obtains motor brush structure, using 24V reductor actual verifications, is started After 50000 times, electricity still runs well；2.1~2.2 millimeters of brush wear, 0.71 millimeter of commutator wear.
Comparative example one
A kind of preparation method of non-dusting brush, consistent with embodiment one, wherein difference is, step（1）It is middle by anacardol, Pungent two mercaptan of 1,8- replaces with octamethylenediamine.
Comparative example two
A kind of preparation method of non-dusting brush, consistent with embodiment one, wherein difference is, step（1）In be added without three Monoethanolamine, Hostathion.
Comparative example three
A kind of preparation method of non-dusting brush, consistent with embodiment one, wherein difference is, step（1）In be added without second Support bis-stearamides.
Comparative example four
A kind of preparation method of non-dusting brush, consistent with embodiment one, wherein difference is, step（2）Middle centrifugation Thing（That is metal oxide）Change graphite powder into.
Comparative example five
A kind of preparation method of non-dusting brush, consistent with embodiment one, wherein difference is, step（2）In be added without six Ammonium chloroiridate.
Comparative example six
A kind of preparation method of non-dusting brush, consistent with embodiment one, wherein difference is, step（2）In be added without it is double Oxygen water, tetraphenylporphyrin iron.
Comparative example seven
A kind of preparation method of non-dusting brush, consistent with embodiment one, wherein difference is, step（2）In be added without it is poly- Ureaformaldehyde；Step（3）In be added without polyphenylene sulfide.
Comparative example eight
A kind of preparation method of non-dusting brush, consistent with embodiment one, wherein difference is, step（3）In be added without carbon Fiber.
Tg testers and condition：DMA, 5 DEG C/min of heating rate；Anti-flammability：According to UL94 testing vertical flammability standards Judged；CT testers and condition：TMA, 300 DEG C, measure are warming up to for 25 DEG C with 10 DEG C/min heating rate from room temperature In-plane thermal coefficient of expansion at from 50 DEG C to 130 DEG C；Water boils 96 hours test water absorption rates；According to electrical carbon brush physical chemistry Can method of testing test electrical property；Universal testing machine tests mechanical property；Tested using existing emery wheel in a finishing phase most greatly Workpiece number；Friction 500 hours, test wear rate.
The brush of table 1 characterizes one
Tg Td Smoothing factor Resistivity CTE Oxygen index (OI) Flame retardant rating Compression strength Process number of packages
Embodiment one 322℃ 438℃ 2Ω 2μΩm 7.2ppm/℃ 32 V0 >150N >2800
Embodiment two 321℃ 436℃ 2Ω 2μΩm 7.4ppm/℃ 32 V0 >150N >2800
Embodiment three 318℃ 433℃ 2Ω 3μΩm 7.6ppm/℃ 31 V0 >150N >2800
Example IV 319℃ 437℃ 2Ω 2μΩm 7.6ppm/℃ 32 V0 >150N >2800
Embodiment five 317℃ 432℃ 2Ω 3μΩm 7.8ppm/℃ 31 V0 >150N >2800
Embodiment six 318℃ 435℃ 2Ω 2μΩm 7.5ppm/℃ 32 V0 >150N >2800
Comparative example one 281℃ 403℃ 3Ω 2μΩm 8.6ppm/℃ 30 V0 >150N >2800
Comparative example two 287℃ 398℃ 2Ω 6μΩm 7.9ppm/℃ 28 V1 145N 2700
Comparative example three 292℃ 399℃ 3Ω 5μΩm 8.4ppm/℃ 30 V0 >150N 2600
Comparative example four 298℃ 392℃ 8Ω 25μΩm 8.4ppm/℃ 30 V0 145N 2750
Comparative example five 293℃ 408℃ 5Ω 15μΩm 7.9ppm/℃ 31 V0 >150N 2700
Comparative example six 298℃ 398℃ 7Ω 15μΩm 8.6ppm/℃ 30 V0 140N >2800
Comparative example seven 291℃ 407℃ 2Ω 6μΩm 8.8ppm/℃ 29 V1 >150N >2800
Comparative example eight 313℃ 413℃ 3Ω 4μΩm 7.9ppm/℃ 30 V0 >150N >2800
The performance characterization two of table 2
Shore hardness Bending strength Water absorption rate Coefficient of friction Impact strength Wear rate Bending modulus
Embodiment one 25 195MPa 0.69% 0.05 28.7KJ/m2 0.59mg/h 4.01Gpa
Embodiment two 25 194MPa 0.69% 0.05 28.1KJ/m2 0.64mg/h 4.0Gpa
Embodiment three 26 192MPa 0.71% 0.05 28.4KJ/m2 0.61mg/h 3.95Gpa
Example IV 26 190MPa 0.70% 0.05 28.3KJ/m2 0.61mg/h 3.98Gpa
Embodiment five 25 193MPa 0.73% 0.05 28.4KJ/m2 0.61mg/h 3.92Gpa
Embodiment six 25 192MPa 0.72% 0.05 28.3KJ/m2 0.60mg/h 3.91Gpa
Comparative example one 29 171MPa 0.79% 0.09 25.1KJ/m2 0.87mg/h 3.37Gpa
Comparative example two 27 174MPa 0.79% 0.10 26.2KJ/m2 0.91mg/h 3.39Gpa
Comparative example three 29 178MPa 0.81% 0.10 27.0KJ/m2 0.88mg/h 3.46Gpa
Comparative example four 29 181MPa 0.90% 0.09 26.1KJ/m2 0.91mg/h 3.36Gpa
Comparative example five 28 181MPa 0.78% 0.09 27.0KJ/m2 0.89mg/h 3.21Gpa
Comparative example six 29 181MPa 0.82% 0.09 26.6KJ/m2 0.85mg/h 3.35Gpa
Comparative example seven 28 182MPa 0.74% 0.09 27.2KJ/m2 0.82mg/h 3.53Gpa
Comparative example eight 24 196MPa 0.63% 0.06 28.7KJ/m2 0.61mg/h 3.99Gpa

Claims (10)

1. a kind of preparation method of non-dusting brush, it is characterised in that comprise the following steps：
（1）Ethylene bis stearamide is added in cyanate, 110 DEG C are stirred 5 minutes, then add Hostathion, 90 DEG C of stirrings 10 Minute；Anacardol, pungent two mercaptan of 1,8- are added, after stirring 30 minutes, norbornene capped polyimides are added, continues to stir 2 hours, triethanolamine is then added in 115 DEG C, stirring obtains polymeric matrix after 15 minutes；Add graphene oxide into epoxy In resin, 160 DEG C of stirrings add methyl silicon sodium alcoholate and aliphatic amine polyoxyethylene ether after 1 hour, and 120 DEG C are stirred 2 hours, Ran Houjia Enter paraffin, stir 1 hour, add polymeric matrix, stir 20 minutes, obtain modified resin system；
（2）Under nitrogen protection, six ammonium chloroiridates of mixing, dioctyl tin, triscyclopentadienyl samarium, ethanol and hexamethylene；It is then refluxed for stirring 1 Hour, then add potassium hydroxide-ethanol solution and TBHP；Reaction naturally cools to room temperature after 4 hours, adds Ethyl acetate coagulation is centrifuged；Resulting dispersion system in ethanol is scattered in after centrifugal sediment is washed；Added in dispersion poly- Vinyl alcohol, hydrogen peroxide, 50 DEG C are stirred 5 hours, then add NIPA, tetraphenylporphyrin iron, and 60 DEG C of stirrings 2 are small When, uramit is then added, then return stirring 3 hours is concentrated to give the concentrate of solid content 80%；Concentrate is carried out Hypergravity processing；Then it is freeze-dried, obtains nano powder；The rotating speed of the hypergravity processing is 35000~40000rpm；Concentration The flow of thing is 80~90mL/min；
（3）By polytetrafluoroethylene (PTFE), five cobalt sulfides, nano powder, modified resin system, carbon fiber, polyphenylene sulfide, DMDS generation Added after carbaminate, the dry grinding of ethylene vinyl acetate copolymer are uniform in extruder, brush is obtained in 175 DEG C of extrusions Composition particle；Brush composition particle obtains non-dusting brush by hot pressing, cutting, polishing.
2. a kind of preparation method of nanometer conductive powder, it is characterised in that comprise the following steps, under nitrogen protection, mixes chlordene Iridium acid ammonium, dioctyl tin, triscyclopentadienyl samarium, ethanol and hexamethylene；Stirring 1 hour is then refluxed for, ethanolic potassium hydroxide is then added molten Liquid and TBHP；Reaction naturally cools to room temperature after 4 hours, add the centrifugation of ethyl acetate coagulation；By centrifugation Resulting dispersion system in ethanol is scattered in after thing washing；Polyvinyl alcohol, hydrogen peroxide are added in dispersion, 50 DEG C are stirred 5 hours, Then NIPA, tetraphenylporphyrin iron are added, 60 DEG C are stirred 2 hours, then add uramit, return stirring 3 hours, then it is concentrated to give the concentrate of solid content 80%；Concentrate is subjected to hypergravity processing；Then it is freeze-dried, obtains Nano powder；The rotating speed of the hypergravity processing is 35000~40000rpm；The flow of concentrate is 80~90mL/min.
3. a kind of preparation method of polymeric matrix, it is characterised in that comprise the following steps, ethylene bis stearamide is added into cyanogen In acid esters, 110 DEG C are stirred 5 minutes, then add Hostathion, and 90 DEG C are stirred 10 minutes；Anacardol, pungent two mercaptan of 1,8- are added, After stirring 30 minutes, norbornene capped polyimides are added, continues to stir 2 hours, then adds three ethanol in 115 DEG C Amine, stirring obtains polymeric matrix after 15 minutes.
4. a kind of preparation method of brush composition, it is characterised in that comprise the following steps：
（1）Ethylene bis stearamide is added in cyanate, 110 DEG C are stirred 5 minutes, then add Hostathion, 90 DEG C of stirrings 10 Minute；Anacardol, pungent two mercaptan of 1,8- are added, after stirring 30 minutes, norbornene capped polyimides are added, continues to stir 2 hours, triethanolamine is then added in 115 DEG C, stirring obtains polymeric matrix after 15 minutes；Add graphene oxide into epoxy In resin, 160 DEG C of stirrings add methyl silicon sodium alcoholate and aliphatic amine polyoxyethylene ether after 1 hour, and 120 DEG C are stirred 2 hours, Ran Houjia Enter paraffin, stir 1 hour, add polymeric matrix, stir 20 minutes, obtain modified resin system；
（2）Under nitrogen protection, six ammonium chloroiridates of mixing, dioctyl tin, triscyclopentadienyl samarium, ethanol and hexamethylene；It is then refluxed for stirring 1 Hour, then add potassium hydroxide-ethanol solution and TBHP；Reaction naturally cools to room temperature after 4 hours, adds Ethyl acetate coagulation is centrifuged；Resulting dispersion system in ethanol is scattered in after centrifugal sediment is washed；Added in dispersion poly- Vinyl alcohol, hydrogen peroxide, 50 DEG C are stirred 5 hours, then add NIPA, tetraphenylporphyrin iron, and 60 DEG C of stirrings 2 are small When, uramit is then added, then return stirring 3 hours is concentrated to give the concentrate of solid content 80%；Concentrate is carried out Hypergravity processing；Then it is freeze-dried, obtains nano powder；The rotating speed of the hypergravity processing is 35000~40000rpm；Concentration The flow of thing is 80~90mL/min；
（3）By polytetrafluoroethylene (PTFE), five cobalt sulfides, nano powder, modified resin system, carbon fiber, polyphenylene sulfide, DMDS generation Added after carbaminate, the dry grinding of ethylene vinyl acetate copolymer are uniform in extruder, brush is obtained in 175 DEG C of extrusions Composition.
5. a kind of preparation method of modified resin system, it is characterised in that comprise the following steps, ethylene bis stearamide is added In cyanate, 110 DEG C are stirred 5 minutes, then add Hostathion, and 90 DEG C are stirred 10 minutes；Add anacardol, pungent two sulphur of 1,8- Alcohol, after stirring 30 minutes, adds norbornene capped polyimides, continues to stir 2 hours, then adds three second in 115 DEG C Hydramine, stirring obtains polymeric matrix after 15 minutes；Add graphene oxide into epoxy resin, 160 DEG C stirring 1 hour after plus Enter methyl silicon sodium alcoholate and aliphatic amine polyoxyethylene ether, 120 DEG C are stirred 2 hours, then add paraffin, are stirred 1 hour, add polymerization Thing matrix, stirs 20 minutes, obtains modified resin system.
6. preparation method according to claim 1, it is characterised in that the ethylene bis stearamide, cyanate, triazole Pungent two mercaptan of phosphorus, anacardol, 1,8-, norbornene capped polyimides, triethanolamine, graphene oxide, epoxy resin, first Base sodium silanolate, aliphatic amine polyoxyethylene ether, the mass ratio of paraffin are 12: 100: 3: 8: 8: 40: 2: 2: 50: 12: 6: 8；Chlordene iridium It is sour ammonium, dioctyl tin, triscyclopentadienyl samarium, ethanol, hexamethylene, potassium hydroxide-ethanol solution, TBHP, polyvinyl alcohol, double Oxygen water, NIPA, tetraphenylporphyrin iron, the mass ratio of uramit are 20: 75: 5: 200: 150: 20: 15: 20 ∶10∶12∶2∶15；Polytetrafluoroethylene (PTFE), five cobalt sulfides, nano powder, modified resin system, carbon fiber, polyphenylene sulfide, dimethyl two Zinc thiocarbamate, the mass ratio of ethylene vinyl acetate copolymer are 5: 3: 32: 100: 2: 11: 2: 15.
7. preparation method according to claim 1, it is characterised in that potassium hydroxide in the potassium hydroxide-ethanol solution Mass concentration is 4%；The molecular weight of the aliphatic amine polyoxyethylene ether is 2500~3500；The molecular weight of the polyvinyl alcohol is 1500~2000.
8. preparation method according to claim 1, it is characterised in that the condition of hot pressing be 1MPa/155 DEG C of solidification 2.5~ + 1.5MPa/230 DEG C of solidifications in 1.5~2.0 hours of+2MPa/180 DEG C of solidifications in 3.0 hours 3.5~4.5 hours.
9. product prepared by any one preparation method according to claims 1 to 5.
10. a kind of motor brush structure, it is characterised in that the brush structure includes preparation method described in claim 1 and prepared Brush, in addition to brushgear housing.
CN201710471985.XA 2017-06-20 2017-06-20 A kind of non-dusting brush and preparation method thereof Pending CN107118516A (en)

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CN201811362477.9A CN109486115A (en) 2017-06-20 2017-06-20 A kind of non-dusting brush and motor brush structure
CN201811467950.XA CN109354833A (en) 2017-06-20 2017-06-20 A kind of non-dusting brush modified resin system and preparation method thereof
CN201811467949.7A CN109627762A (en) 2017-06-20 2017-06-20 A kind of non-dusting brush nanometer conductive powder and preparation method thereof
CN201710471985.XA CN107118516A (en) 2017-06-20 2017-06-20 A kind of non-dusting brush and preparation method thereof
CN201811231959.0A CN109517334A (en) 2017-06-20 2017-06-20 A kind of brush composition and preparation method thereof

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CN201811467950.XA Division CN109354833A (en) 2017-06-20 2017-06-20 A kind of non-dusting brush modified resin system and preparation method thereof
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CN108300337A (en) * 2017-12-11 2018-07-20 昆山市冠宝化学有限公司 No-solvent polyurethane adhesive used for textiles and preparation method thereof

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