CN103939511B - A kind of automobile soft magnetism brake slice prescription and preparation method thereof - Google Patents
A kind of automobile soft magnetism brake slice prescription and preparation method thereof Download PDFInfo
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Abstract
The present invention discloses a kind of automobile soft magnetism brake slice prescription and preparation method thereof, is formulated and is made up of the component of following parts by weight：6~18 parts of organic binder bond, 15~45 parts of reinforcing fiber, 10~50 parts of frictional property regulator, 3~10 parts of filler, 5~30 parts of soft magnetic material.Preparation method includes crushing, batch mixing, hot-forming, heat treatment and surface processing technique etc..Beneficial effect is：Soft magnetic material is added in original automobile brake sheet, coefficient of friction is increased, reduces rate of wear, improve friction stability, well adapted to the various complicated damped conditions of automobile.The soft magnetic material of addition is ferromagnetic substance so that automobile soft magnetism brake block has larger magnetic conductivity and saturation induction density, and most basic material conditions are provided for the magnetic field control of drag friction process.Automobile soft magnetism brake block preparation method is relatively easy, and without magnetizing in advance, braking procedure can adjust the size of magnetic come adjustment control friction behavior by external magnetic field.
Description
Technical field
The present invention relates to one kind brake slice prescription, and in particular to a kind of automobile soft magnetism brake slice prescription and preparation method thereof.
Background technology
The domestic Development Trend to vehicle friction material, not only rest in the reliable simple requirement of braking,
Towards brake safe, ride comfort, reduce pollution, the direction that protects the health is developed.High speed and heavy duty with Automobile Transportation
To change, traditional automobile brake sheet can not meet safe and reliable, comfortable, environmentally friendly requirement, and it is larger to be mainly due to its abrasion,
Serious to mating plate injury, continuous braking easily causes brake failure etc..
Traditional automobile brake sheet is typically using asbestos friction material, semimetal friction material and without the organic friction material of asbestos
Material.Asbestos brake lining has the shortcomings that unstable coefficient of friction, poor thermal conductivity and strong carcinogenicity；Semi-metallic brake pad have density it is big,
Easily get rusty, the shortcomings of big and brake oil is big is injured to mating plate；And existing non-asbestos brake block coefficient of friction at high temperature
Rapid decrease, wear rate steeply rise, and character of heat-fading is notable, are influenceed greatly by environment and damped condition, it is impossible to continuous system for a long time
Move.With the high speed and heavy loading of Automobile Transportation, existing automobile brake sheet, which can not adapt to various complex working conditions completely, to be needed
Ask, abrasion is larger, more serious to mating plate injury, and lasting brake is easily caused brake failure especially under high-speed overload operating mode, makes
Into major traffic accidents, huge economic loss is brought.
Related data has shown that electromagnetic field has certain actively impact to drag friction process, can increase to a certain extent
Big friction, abrasion is reduced, and significantly improve friction process stability.Therefore, if magnetic field can be made full use of to drag friction behavior
Actively impact, and be applied to the active control to automotive brake friction process, be then remarkably improved automotive brake
Brake efficiency and reliability, strengthen human pilot brake operating comfortableness, but due to existing automobile brake sheet be it is nonmetallic,
Nonferromugnetic material so that the magnetic field control to automotive brake friction process does not possess most basic material conditions and technology base also
Plinth.
The content of the invention
In view of the above-mentioned problems of the prior art, the present invention provides a kind of automobile soft magnetism brake slice prescription and its making side
Method, the brake block is heat-resist, friction and wear behavior is stable, can preferably adapt to the extreme damped condition such as automobile high-speed, heavy duty, and
With new feature --- magnetic, can be that the friction catch technology of development magnetic field control in the future establishes material base.
To achieve these goals, the technical solution adopted by the present invention is：A kind of automobile soft magnetism brakes slice prescription, be formulated by
The component composition of following parts by weight：6~18 parts of organic binder bond, 15~45 parts of reinforcing fiber, frictional property regulator 10~50
Part, 3~10 parts of filler, 5~30 parts of soft magnetic material；
Organic binder bond is：One kind in phenolic resin, phenol-formaldehyde resin modified, epoxy resin, polyurethane resin is appointed
Meaning combination；
Reinforcing fiber is：Glass fibre, sepiolite fibre, acicular wollastonite, fibrous shepardite, FKF fibers, English are special fine
Tie up ETF, aramid fiber, steel fibre, copper fiber, aluminum fiber, zinc fiber, flaxen fiber, vinal, carbon fiber, alumina silicate
One or any combination in fiber, rock wool, cotton fiber；
Frictional property regulator is：Corundum, vermiculite, feldspar, barite, wollastonite, fluorite, zeolite, lime stone, ice crystal
Stone, iron oxide, chromite powder, foam ferrous powder, non-corrosive iron powder, brass powder, red copper powder, aluminium powder, lead powder, aluminum oxide, zircon,
One kind in quartzite, kaolin, diatomite, dolomite, bauxite, graphite, molybdenum disulfide, talcum, mica, antimony trisulfide or
Any combination；
Filler is：Cashew nut shell oil Frication powder, acrylonitrile-butadiene rubber powder, styrene butadiene rubber powder, mill dirt, tyre talc, amido ester, the demoulding
One or any combination in agent, coupling agent；
Soft magnetic material is：Nickel-zinc ferrite, manganese-zinc ferrite, Mn ferrite, Ni ferrite, manganese Ni ferrite, iron silicon
One or any combination in aluminium soft magnetic powder, hydroxy iron powder, iron-cobalt-nickel powder, Ni81Mo2 permalloy powder.
A kind of preparation method of automobile soft magnetism brake block, comprises the following steps：
1）By material in drying baker, in the drying process 6 hours of 40 DEG C of temperature；
2）Chopped fiber is made in reinforcing fiber；
3）Lump material is handled by pulverizer, be ground into finely divided；
4）Material is put into and mixed at high speed 15-30min is carried out in batch mixer；
5）Mixed material is put into mould, pressurize 20MPa-25MPa under the conditions of 150 DEG C -180 DEG C of temperature, pressure
Type is made, is stripped；
6）Heat treatment：Clamping plate carries out sizing heat treatment 6 hours, the demoulding under the conditions of being positioned at 150 DEG C -210 DEG C.
The beneficial effects of the invention are as follows：Soft magnetic material is added in original automobile brake sheet, is coordinating externally-applied magnetic field effect
Under, coefficient of friction is increased, reduces rate of wear, improves friction stability, has well adapted to the various complicated systems of automobile
Start building condition.The soft magnetic material of addition is ferromagnetic substance so that automobile soft magnetism brake block has larger magnetic conductivity and saturation magnetic
Induction, most basic material conditions are provided for the magnetic field control of drag friction process.Utilize the controllability in magnetic field and its
To the actively impact of drag friction behavior, automobile soft magnetism brake block is applied to the active control to drag friction process, can be shown
Write the brake efficiency for improving friction brake and reliability and the comfortableness of driving can be greatly enhanced.In addition, automobile soft magnetism brakes
Piece preparation method is relatively easy, and without magnetizing in advance, braking procedure can adjust the size of magnetic come adjustment control by external magnetic field
Friction behavior.
Embodiment
The invention will be further described below.
This automobile soft magnetism brake slice prescription, is formulated and is made up of the component of following parts by weight：6~18 parts of organic binder bond, increase
Strong 15~45 parts of fiber, 10~50 parts of frictional property regulator, 3~10 parts of filler, 5~30 parts of soft magnetic material；
Organic binder bond is：One kind in phenolic resin, phenol-formaldehyde resin modified, epoxy resin, polyurethane resin is appointed
Meaning combination；
Reinforcing fiber is：Glass fibre, fibrous sepiolite, acicular wollastonite, fibrous shepardite, FKF fibers, English are special fine
Tie up ETF, aramid fiber, steel fibre, copper fiber, aluminum fiber, zinc fiber, flaxen fiber, vinal, carbon fiber, alumina silicate
One or any combination in fiber, rock wool, cotton fiber；
Frictional property regulator is：Corundum, vermiculite, feldspar, barite, wollastonite, fluorite, zeolite, lime stone, ice crystal
Stone, iron oxide, chromite powder, foam ferrous powder, non-corrosive iron powder, brass powder, red copper powder, aluminium powder, lead powder, aluminum oxide, zircon,
One kind in quartzite, kaolin, diatomite, dolomite, bauxite, graphite, molybdenum disulfide, talcum, mica, antimony trisulfide or
Any combination；
Filler is：Cashew nut shell oil Frication powder, acrylonitrile-butadiene rubber powder, styrene butadiene rubber powder, mill dirt, tyre talc, amido ester, the demoulding
One or any combination in agent, coupling agent；
Soft magnetic material is：Nickel-zinc ferrite, manganese-zinc ferrite, Mn ferrite, Ni ferrite, manganese Ni ferrite, iron silicon
One or any combination in aluminium soft magnetic powder, hydroxy iron powder, iron-cobalt-nickel powder, Ni81Mo2 permalloy powder.
The preparation method of automobile soft magnetism brake block, comprises the following steps：
When making automobile soft magnetism brake block, by material in drying baker, in the drying process 6 hours of 40 DEG C of temperature；It will increase again
Chopped fiber is made in strong fiber；Then lump material is handled by pulverizer, be ground into finely divided；Material is put into batch mixer
Middle progress mixed at high speed 15-30min；Mixed material is put into mould, pressurizeed under the conditions of 150 DEG C -180 DEG C of temperature
20MPa-25MPa, compressing, the demoulding；Heat treatment：Clamping plate carries out sizing heat treatment 6 under the conditions of being positioned at 150 DEG C -210 DEG C
Hour, the demoulding；Flash removed, polishing japanning, is made finished product.
Embodiment one
Organic binder bond is cashew nut oil modified alkyd resin（Cashew nut oil modified alkyd resin is in phenol-formaldehyde resin modified
One kind）9 parts, reinforcing material：6 parts of copper fiber, 10 parts of steel fibre, 8 parts of glass fibre, 4 parts of aramid fiber, 8 parts of FKF fibers；
Frictional property regulator：3 parts of graphite, 2 parts of antimony trisulfide, 2 parts of zircon, 8 parts of feldspar, 10 parts of barite, 5 parts of diatomite, kaolinite
3 parts of soil, 4 parts of foam ferrous powder；Filler：4 parts of cashew nut shell oil Frication powder, 2 parts of zirconium class coupling agent（Zirconium class coupling agent is in coupling agent
It is a kind of）, 2 parts of releasing agent；Soft magnetic material：10 parts of hydroxy iron powder.
Embodiment two
Organic binder bond is nbr modified phenolic resinses（Nbr modified phenolic resinses are one kind in phenol-formaldehyde resin modified）9
Part, reinforcing material：6 parts of copper fiber, 8 parts of steel fibre, 6 parts of sepiolite fibre, 8 parts of glass fibre, 8 parts of FKF fibers；Frictional behaviour
Conditioning agent：3 parts of graphite, 2 parts of antimony trisulfide, 2 parts of aluminum oxide, 8 parts of feldspar, 10 parts of barite, 7 parts of zeolite, 5 parts of kaolin；Filler：
4 parts of cashew nut shell oil Frication powder, 2 parts of silane coupler（Silane coupler is one kind in coupling agent）, 2 parts of releasing agent；Soft magnetism
Material：10 parts of nickel-zinc ferrite.
Embodiment three
Organic binder bond is 10 parts of phenolic resin, reinforcing material：5 parts of aluminum fiber, 9 parts of steel fibre, 9 parts of glass fibre, virtue
4 parts of synthetic fibre fiber, 8 parts of alumina silicate fibre；Frictional property regulator：2 parts of graphite, 3 parts of antimony trisulfide, 10 parts of feldspar, 10 parts of barite,
5 parts of vermiculite, 3 parts of kaolin, 4 parts of quartzite；Filler：4 parts of cashew nut shell oil Frication powder, 2 parts of silane coupler, 2 parts of releasing agent；It is soft
Magnetic material：10 parts of manganese-zinc ferrite.
Brake block prepared by three kinds of embodiments carries out constant pressure constant speed experiment on friction criterion testing machine respectively, and pressure is
0.98MPa, speed 16.7m/s, it is respectively 100 DEG C, 150 DEG C, 200 DEG C, 250 DEG C, 300 DEG C and 350 DEG C six temperature in temperature
Spend under scope and carry out friction test measure coefficient of friction and wear rate（Testing equipment meets the standards of JC/T 1065 regulation）.This hair
Bright reference standard GB/T 5763-2008《Brake spacer for automobile》Associated specifications, through experimental test coefficient of friction and
Wear rate, it is as a result as shown in the table.
Embodiment one prepares brake block frictional behaviour test table
Embodiment two prepares brake block frictional behaviour test table
Embodiment three prepares brake block frictional behaviour test table
It can see from above three table, brake block prepared by three of the above embodiment all meets that the 4th class is rubbed in national standard
Performance is wiped, and coefficient of friction performance is stable, and wear rate is all in low level.
Again respectively by brake block prepared by three kinds of embodiments magnetic field intensity be 12KA/m and other experimental conditions with it is above-mentioned
Tested under experiment same case with fixed speed fricting test machine, determine coefficient of friction and wear rate, it is as a result as shown in the table.
Embodiment one prepares brake block magnetic field frictional behaviour test table
Embodiment two prepares brake block magnetic field frictional behaviour test table
Embodiment three prepares brake block magnetic field frictional behaviour test table
It can see from above three table, brake block prepared by three of the above embodiment all meets that the 4th class is rubbed in national standard
Performance is wiped, and relative to the friction and wear test results in no magnetic field, the brake block system that under magnetic fields prepared by each embodiment
Dynamic positive effect, coefficient of friction is relatively large, and coefficient of friction deviation is relatively small, and wear rate relative reduction, friction stability is good,
Combination property is preferable.
Claims (2)
1. a kind of automobile soft magnetism brake block, it is characterised in that formula is made up of the component of following parts by weight：Organic binder bond 6~
18 parts, 15~45 parts of reinforcing fiber, 10~50 parts of frictional property regulator, 3~10 parts of filler, 5~30 parts of soft magnetic material；
Organic binder bond is：One or any combination in phenolic resin, epoxy resin, polyurethane resin；
Reinforcing fiber is：Glass fibre, sepiolite fibre, acicular wollastonite, fibrous shepardite, FKF fibers, English spy's fiber
ETF, aramid fiber, steel fibre, copper fiber, aluminum fiber, zinc fiber, flaxen fiber, vinal, carbon fiber, aluminium silicate fiber
One or any combination in dimension, rock wool, cotton fiber；
Frictional property regulator is：Corundum, vermiculite, feldspar, barite, wollastonite, fluorite, zeolite, lime stone, ice crystal, oxygen
Change iron, chromite powder, foam ferrous powder, non-corrosive iron powder, brass powder, red copper powder, aluminium powder, lead powder, aluminum oxide, zircon, quartz
It is one or any in rock, kaolin, diatomite, dolomite, bauxite, graphite, molybdenum disulfide, talcum, mica, antimony trisulfide
Combination；
Filler is：Cashew nut shell oil Frication powder, acrylonitrile-butadiene rubber powder, styrene butadiene rubber powder, mill dirt, tyre talc, amido ester, releasing agent, idol
Join the one or any combination in agent；
Soft magnetic material is：Nickel-zinc ferrite, manganese-zinc ferrite, Mn ferrite, Ni ferrite, manganese Ni ferrite, iron sial are soft
One or any combination in magnetic powder, hydroxy iron powder, iron-cobalt-nickel powder, Ni81Mo2 permalloy powder.
2. prepare a kind of preparation method of automobile soft magnetism brake block as claimed in claim 1, it is characterised in that including following step
Suddenly：
1）By material in drying baker, in the drying process 6 hours of 40 DEG C of temperature；
2）Chopped fiber is made in reinforcing fiber；
3）Lump material is handled by pulverizer, be ground into finely divided；
4）Material is put into and mixed at high speed 15-30min is carried out in batch mixer；
5）Mixed material is put into mould, pressurize 20MPa-25MPa under the conditions of 150 DEG C -180 DEG C of temperature, is pressed into
Type, the demoulding；
6）Heat treatment：Clamping plate carries out sizing heat treatment 6 hours, the demoulding under the conditions of being positioned at 150 DEG C -210 DEG C.
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| CN109488710A (en) * | 2018-10-19 | 2019-03-19 | 南京航空航天大学溧水仿生产业研究院有限公司 | A kind of high-performance non-asbestos brake block |
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