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 PDF

Info

Publication number
CN103939511B
CN103939511B CN201410183850.XA CN201410183850A CN103939511B CN 103939511 B CN103939511 B CN 103939511B CN 201410183850 A CN201410183850 A CN 201410183850A CN 103939511 B CN103939511 B CN 103939511B
Authority
CN
China
Prior art keywords
parts
powder
fiber
automobile
friction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201410183850.XA
Other languages
Chinese (zh)
Other versions
CN103939511A (en
Inventor
鲍久圣
胡东阳
阴妍
刘金革
刘同冈
刘书进
刘阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Mining and Technology CUMT
Original Assignee
China University of Mining and Technology CUMT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China University of Mining and Technology CUMT filed Critical China University of Mining and Technology CUMT
Priority to CN201410183850.XA priority Critical patent/CN103939511B/en
Publication of CN103939511A publication Critical patent/CN103939511A/en
Application granted granted Critical
Publication of CN103939511B publication Critical patent/CN103939511B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Braking Arrangements (AREA)

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

A kind of automobile soft magnetism brake slice prescription and preparation method thereof
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.
CN201410183850.XA 2014-05-04 2014-05-04 A kind of automobile soft magnetism brake slice prescription and preparation method thereof Active CN103939511B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410183850.XA CN103939511B (en) 2014-05-04 2014-05-04 A kind of automobile soft magnetism brake slice prescription and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410183850.XA CN103939511B (en) 2014-05-04 2014-05-04 A kind of automobile soft magnetism brake slice prescription and preparation method thereof

Publications (2)

Publication Number Publication Date
CN103939511A CN103939511A (en) 2014-07-23
CN103939511B true CN103939511B (en) 2018-01-30

Family

ID=51187327

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410183850.XA Active CN103939511B (en) 2014-05-04 2014-05-04 A kind of automobile soft magnetism brake slice prescription and preparation method thereof

Country Status (1)

Country Link
CN (1) CN103939511B (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104154153B (en) * 2014-08-28 2016-09-14 安徽省中力车辆制动***制造有限公司 Passenger vehicle is with without asbestos micro-metal brake pad
CN104315045A (en) * 2014-09-16 2015-01-28 湖南博云汽车制动材料有限公司 Low-cost low-noise semimetal disc type brake pad and preparation method thereof
CN104231550A (en) * 2014-10-14 2014-12-24 荣成复合材料有限公司 Composite material carriage and manufacturing method thereof
CN104533998A (en) * 2014-12-28 2015-04-22 福建冠良汽车配件工业有限公司 Non-asbestos micro-metal mineral fiber disk type brake block for automobile
CN104891975A (en) * 2015-04-24 2015-09-09 马鞍山科信咨询有限公司 High flexural strength nickel-zinc soft magnetic ferrite material and preparation method thereof
CN105565390B (en) * 2015-12-12 2017-05-10 北京工业大学 Diatomite base/nickel-zinc ferrite electromagnetic wave absorber and preparation method thereof
CN106279837A (en) * 2016-08-16 2017-01-04 广西南宁胜祺安科技开发有限公司 A kind of preparation method of durable brake block
CN106279815A (en) * 2016-08-16 2017-01-04 广西南宁胜祺安科技开发有限公司 A kind of preparation method of high-strength wear-resistant brake pad
CN106195083A (en) * 2016-08-16 2016-12-07 广西南宁胜祺安科技开发有限公司 A kind of high-strength wear-resistant brake pad
CN106279836A (en) * 2016-08-16 2017-01-04 广西南宁胜祺安科技开发有限公司 A kind of automotive friction material
CN106224417A (en) * 2016-08-16 2016-12-14 广西南宁胜祺安科技开发有限公司 A kind of durable brake block adding activated carbon powder
CN106373689B (en) * 2016-08-30 2018-07-24 海门市彼维知识产权服务有限公司 A kind of magnet composite material and preparation method for covering special soil based on nanometer
CN106566471A (en) * 2016-09-21 2017-04-19 南京航空航天大学 Phenolic resin based friction material for ultrasonic motors and preparation method thereof
DE112016007327T5 (en) 2016-11-15 2019-07-18 Borgwarner Inc. friction material
CN106811177B (en) * 2017-02-17 2018-11-09 盐城工学院 Low noise friction material and its preparation method and application
CN107191516A (en) * 2017-05-26 2017-09-22 山东交通职业学院 A kind of automobile brake sheet without steel fibre
CN106958616A (en) * 2017-05-26 2017-07-18 山东交通职业学院 A kind of automobile brake sheet of not cupric
CN107461436B (en) * 2017-07-25 2019-07-12 北京天宜上佳新材料股份有限公司 A kind of fiber for automotive brake pads is without copper composition, application and preparation method
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
CN109677373B (en) * 2018-12-26 2020-09-04 衢州奥杰机车部件有限公司 Self-locking structure and method for hand brake of locomotive
CN111101082B (en) * 2019-12-25 2021-02-02 杭州安耐特实业有限公司 Metal ceramic composite material for new energy automobile brake pad and preparation method thereof
CN112570707B (en) * 2020-01-22 2023-04-07 沈阳市沈新粉末冶金制品有限公司 Iron-based ferrite material and preparation method and application thereof
CN113007248B (en) * 2021-02-23 2023-02-10 山东金麒麟股份有限公司 Low-ash-falling friction material, brake pad and application of friction material

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0087276A2 (en) * 1982-02-18 1983-08-31 Inoue-Japax Research Incorporated Frictional materials
CN1664401A (en) * 2005-03-09 2005-09-07 中信重型机械公司 Method for preparing disc-brake shoe of mine hoist
CN101423745A (en) * 2007-10-29 2009-05-06 比亚迪股份有限公司 Friction braking material and preparation method thereof
CN102250583A (en) * 2011-05-21 2011-11-23 瑞阳汽车零部件(仙桃)有限公司 Less-copper friction material composition for brake block

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0087276A2 (en) * 1982-02-18 1983-08-31 Inoue-Japax Research Incorporated Frictional materials
CN1664401A (en) * 2005-03-09 2005-09-07 中信重型机械公司 Method for preparing disc-brake shoe of mine hoist
CN101423745A (en) * 2007-10-29 2009-05-06 比亚迪股份有限公司 Friction braking material and preparation method thereof
CN102250583A (en) * 2011-05-21 2011-11-23 瑞阳汽车零部件(仙桃)有限公司 Less-copper friction material composition for brake block

Also Published As

Publication number Publication date
CN103939511A (en) 2014-07-23

Similar Documents

Publication Publication Date Title
CN103939511B (en) A kind of automobile soft magnetism brake slice prescription and preparation method thereof
CN104110454B (en) A kind of automobile Hard Magnetic brake slice prescription and preparation method thereof
CN103937452B (en) A kind of mine hoist soft magnetism brake shoe material prescription and preparation method thereof
CN104099063B (en) A kind of mine hoist Hard Magnetic brake shoe material prescription and preparation method thereof
CN104533998A (en) Non-asbestos micro-metal mineral fiber disk type brake block for automobile
US20150323028A1 (en) Friction material
CN108728041A (en) A kind of automotive brake pads few metal Environment protection type friction material and preparation method thereof
CN103398119B (en) Automobile brake sheet and preparation method thereof
CN101555913B (en) Fire-resistant micro-metal brake pad
CN103375520A (en) Brake pad
KR20010042576A (en) Friction Material
CN104059260B (en) A kind of high temperature resistant composite function brake shoe and production method thereof
CN105909704B (en) A kind of composite brake sheet of fine heat radiation property
CN103122959A (en) High-temperature wear-resisting ceramic composite fiber brake block
CN105670564A (en) Copper-free friction material and brake pad
CN103059808A (en) Low-fading-rate NAO friction material and preparation method thereof
CN104315045A (en) Low-cost low-noise semimetal disc type brake pad and preparation method thereof
CN109666454A (en) A kind of automobile-used disc brake pad friction material of heavy type and brake block preparation process
CN106589802A (en) Disc brake pad
CN102691736B (en) Environment-friendly high wear-resistant asbestos-free brake block and electromagnetic hot pressing technique
CN102766436B (en) New friction material and application thereof
CN108488281B (en) Wear-resistant low-noise automobile brake pad and preparation method thereof
CN104098042B (en) A kind of Nanoscale Iron magnetic mine hoist brake shoe formula and preparation method thereof
CN104154153A (en) Passenger car asbestos-free brake pad containing less metal
CN102359522B (en) Brake friction plate and preparation method thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant