CN108468735A - A kind of asbestos-free friction material and preparation method and application - Google Patents
A kind of asbestos-free friction material and preparation method and application Download PDFInfo
- Publication number
- CN108468735A CN108468735A CN201810228006.2A CN201810228006A CN108468735A CN 108468735 A CN108468735 A CN 108468735A CN 201810228006 A CN201810228006 A CN 201810228006A CN 108468735 A CN108468735 A CN 108468735A
- Authority
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- China
- Prior art keywords
- friction material
- asbestos
- mineral fiber
- compound mineral
- free friction
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Compositions of linings; Methods of manufacturing
- F16D69/025—Compositions based on an organic binder
- F16D69/026—Compositions based on an organic binder containing fibres
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/149—Antislip compositions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Compositions of linings; Methods of manufacturing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/006—Materials; Production methods therefor containing fibres or particles
- F16D2200/0065—Inorganic, e.g. non-asbestos mineral fibres
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0082—Production methods therefor
- F16D2200/0086—Moulding materials together by application of heat and pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a kind of asbestos-free friction materials and preparation method and application, are related to field of material technology.The friction material of the present invention includes the raw material of following mass percent：Phenolic resin 15% 20%, nitrile rubber powder 1% 5%, compound mineral fiber 20% 30%, glass fibre 5% 8%, natural graphite 5% 8%, artificial graphite 3% 5%, petroleum coke carbon dust 3% 5%, cashew nut oil Frication powder 2% 5%, magnesia 3% 5%, dolomite dust 10% 15%, increasing rubs material 2% 5%, releasing agent 0.4% 0.6%, colorant 0.8% 1.2%, vermiculite 1 5%.The present invention successfully prepares friction material using compound mineral fiber and its performance can meet requirement by adjusting formula, achievees the effect that substitute asbestos using compound mineral fiber, overcomes the defect of compound mineral fiber itself.
Description
Technical field
The present invention relates to materialogy technical field more particularly to a kind of asbestos-free friction material and preparation method thereof and answer
With.
Background technology
Friction material be it is a kind of apply on dynamic power machine, the component of braking and transmission agency is executed by rubbing action
The various vehicles of material, any mechanical equipment and movement all must have braking or gearing.Friction material is this braking
Or the critical piece on transmission device.Its most important function is to be absorbed by rubbing or passing power.Such as clutch disc
Passing power, brake(-holder) block absorb kinetic energy.They enable mechanical equipment safely and reliably to work with various motor vehicles.Therefore,
Friction material is that one kind is widely used and very crucially material.
Friction material is a kind of macromolecule trielement composite material, is physics and chemical complex.It is bonded by macromolecule
Agent (resin and rubber), reinforcing fiber and frictional property regulator three categories composition and other compounding agents are constituted, through a series of lifes
Production is processed and manufactured product.Friction material can be divided into asbestos friction material and asbestos less friction material by reinforcing fiber type
Material.Asbestos have last 100 years history as application of the reinforcing fiber in friction material, so far still in friction material and related production
Occupy certain weight proportion in industry.Harm due to asbestos to human body, Environmental Protection in America portion propose asbestos in nineteen seventies
For carcinogen.Chinese national standard GB5763-2008 has been revised, and asbestos must not be contained in clear stipulaties liner.
Therefore, a kind of reinforcing fiber of alternative asbestos need to be found.It is sent out as reinforcing fiber when selecting compound mineral fiber
Processing performance when now it is compared with asbestos single factor test is not so good as asbestos fibre, and absorbability is poor, and intensity is low, and hardness is also below asbestos fibre
Dimension, but its frictional behaviour and mechanical property can meet friction material items with technology requirement.Traditional technology can not will answer at present
It closes mineral fibres and prepares friction material as reinforcing fiber, performance cannot be satisfied actual operation requirements.
Invention content
In view of this, an embodiment of the present invention provides a kind of asbestos-free friction materials and preparation method and application, mainly
Purpose is to solve the problems, such as that compound mineral fiber is not used to friction material.
In order to achieve the above objectives, invention broadly provides following technical solutions：
On the one hand, an embodiment of the present invention provides a kind of asbestos-free friction material, the friction material includes following quality
The raw material of percentage：Phenolic resin 15%-20%, nitrile rubber powder 1%-5%, compound mineral fiber 20%-30%, glass fibers
Tie up 5%-9%, natural graphite 5%-8%, artificial graphite 3%-5%, petroleum coke carbon dust 3%-5%, cashew nut oil Frication powder 2%-
5%, magnesia 3%-5%, dolomite dust 10%-15% increase the material 2%-5% that rubs, releasing agent 0.4%-0.6%, colorant
0.8%-1.2%, vermiculite 1-5%.
Preferably, the friction material includes the raw material of following mass percent：Phenolic resin 16%-19%, fourth
Nitrile rubber powder 2%-5%, compound mineral fiber 22%-28%, glass fibre 6%-9%, natural graphite 6%-8%, artificial graphite
4%-5%, petroleum coke carbon dust 4%-5%, cashew nut oil Frication powder 3%-5%, magnesia 4%-5%, dolomite dust 12%-
15%, increase rub material 3%-5%, releasing agent 0.5%-0.6%, colorant 0.9%-1.2%, vermiculite 2-5%.
Preferably, the friction material includes the raw material of following mass percent：Phenolic resin 16%, nitrile rubber powder
4%, compound mineral fiber 27.5%, glass fibre 9%, natural graphite 7%, artificial graphite 4%, petroleum coke carbon dust 3%, cashew nut
Oil drag powder 3%, magnesia 4%, dolomite dust 13% increase the material 4% that rubs, releasing agent 0.5%, colorant 1.0%, vermiculite
4%.
Preferably, the increasing rubs, material is aluminium oxide and/or chromite.
Preferably, friction coefficient of friction material at a temperature of 100 DEG C -300 DEG C is 0.40-0.46, abrasion
Rate is 0.12 × 10- 7cm3/N·m-0.22×10- 7cm3/N·m。
Preferably, the compound mineral fiber is at 800 DEG C, 1h, loss on ignition is less than or equal to 10%；The complex mineral is fine
The capacity of dimension is 0.13-15g/cm3；The moisture of the compound mineral fiber is less than 1.5%.
On the other hand, an embodiment of the present invention provides a kind of preparation methods of asbestos-free friction material, including：Dispensing is mixed
Dispensing described in conjunction, preforming, hot pressing, heat treatment and machine-shaping is the formula of above-mentioned friction material.
In another aspect, the answering in preparing asbestos-free friction material an embodiment of the present invention provides a kind of compound mineral fiber
With.
Another aspect, an embodiment of the present invention provides a kind of asbestos-free friction material answering in rubber slab or construction material
With.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention is cooperateed with mutually by reasonable design formula, each component and component proportion, has been reached friction material and has been wanted
The performance asked makes up and overcomes the performance deficiency that compound mineral fiber is used for friction material as reinforcing fiber.The present invention is
Based on the research of compound mineral fiber-asbestos-free friction material, the purpose is to seek new resource and substitute fibre, for the country
The New Type of Friction Materials without Asbestos that resourceful, price is less than other non-asbestos fiber technologies is provided, which can be used as main body
The composite friction materials such as fiber reinforcement, composite fibre enhancing, auxiliary enhancing are carried out, with preferable popularizing application prospect.
Specific implementation mode
For further illustrate the present invention to reach the technological means and effect that predetermined goal of the invention is taken, below with compared with
Specific implementation mode, technical solution, feature and its effect applied according to the present invention is described in detail as after in good embodiment.Under
State it is bright in multiple embodiments in special characteristic, structure or feature can be combined by any suitable form.
Embodiment 1
A kind of asbestos-free friction material, including following raw material：Phenolic resin 16.8g, nitrile rubber powder 5g, complex mineral are fine
Tie up 20g, glass fibre 9g, natural graphite 8g, artificial graphite 5g, petroleum coke carbon dust 5g, cashew nut oil Frication powder 5g, magnesia 5g,
Dolomite dust 15g increases the material (Li that rubs2O, chromite etc.) 5g, releasing agent 0.4g, colorant 0.8g, vermiculite 1.
Embodiment 2
A kind of asbestos-free friction material, including following raw material：Phenolic resin 16g, nitrile rubber powder 4g, compound mineral fiber
27.5g, glass fibre 7g, natural graphite 7g, artificial graphite 4g, petroleum coke carbon dust 3g, cashew nut oil Frication powder 3g, magnesia 4g,
Dolomite dust 13g increases rub material 4g, releasing agent 0.5g, colorant 1.0g, vermiculite 4g.
Embodiment 3
A kind of asbestos-free friction material, including following raw material：Phenolic resin 20g, nitrile rubber powder 1g, compound mineral fiber
29g, glass fibre 5g, natural graphite 5g, artificial graphite 5g, petroleum coke carbon dust 5g, cashew nut oil Frication powder 5g, magnesia 5g, in vain
Marble dust 11.2g increases the material (Li that rubs2O, chromite etc.) 2g, releasing agent 0.6g, colorant 1.2g, vermiculite 5g.
The compound mineral fiber that the present invention selects be it is a kind of including multi mineral fiber, be aided with a small amount of organic fiber it is compound and
At new-type friction material reinforcing fiber, it can also be used to other are without asbestos friction material, such as non-asbestos rubber slab and construction material.
The compound mineral fiber that the present invention selects has characteristic：Loss on ignition (at 800 DEG C 1 hour) is not more than 10%；Unit weight
0.13~0.15 gram/cm3, moisture content is less than 1.5%.
The present invention replaces reinforcing fiber of the asbestos as friction material, only single substance performance comparison using compound mineral fiber
As a result as shown in Table 1 and Table 2.
1. compound mineral fiber of table and asbestos fibre single factor test performance comparison 1：
2. compound mineral fiber of table and asbestos fibre single factor test performance comparison 2：
| Impact strength (J/cm2) | Rockwell hardness | |
| Asbestos fibre | 0.70 | 99.2 |
| Mineral fibres | 0.30 | 68.0 |
The performance test results of friction material prepared by 3. embodiment 2 of table
From the point of view of the single factor test comparing result of above-mentioned Tables 1 and 2, asbestos fibre has unique performance, especially technique
Performance is good, strong adsorption, good to matrix wellability, and impact strength is high, and difficulty is big, and high temperature resistance is good, the friction coefficient temperature
Increase it is in rising trend, abrasion it is bigger than normal.Above-mentioned compound mineral fiber processing performance is not so good as asbestos fibre, and adsorptivity is poor, and intensity is low,
Hardness can meet friction material items and be wanted with technology also below asbestos fibre, but from the point of view of frictional behaviour and mechanical property
It asks.
The present invention meets asbestos-free friction material in view of the above compound mineral fiber self character by adjusting formula
Every technology requirement, has unique performance, abrasion is small, and hardness is low, can overcome the noise generated in braking process, and improves use
Service life.Effect and mutual influence factor of the present invention in view of formula each component, seek rational comprehensive technical indexes and
Economic benefit, meets processing performance, and feasible formula is finally determined.
The present invention friction material formulation be specially：(mass percent) phenolic resin 15%-20%, nitrile rubber powder 1%-
5%, compound mineral fiber 20%-30%, glass fibre 5%-8%, natural graphite 5%-8%, artificial graphite 3%-5%, stone
Oil coke carbon dust 3%-5%, cashew nut oil Frication powder 2%-5%, magnesia 3%-5%, dolomite dust 10%-15% increase the material that rubs
2%-5%, releasing agent 0.4%-0.6%, colorant 0.8%-1.2%, vermiculite 1-5%.
The optimization formula of friction material of the present invention is：(mass percent) phenolic resin 18%, nitrile rubber powder 4% are compound
Mineral fibres 27.5%, glass fibre 7%, natural graphite 7%, artificial graphite 4%, petroleum coke carbon dust 3%, cashew nut oil Frication powder
3%, magnesia 4%, dolomite dust 13% increases the material 4% that rubs, releasing agent 0.5%, colorant 1.0%, vermiculite 4%.
Asbestos-free friction material of the present invention has the following performance：
A, the frictional behaviour that has, antifading is good, abrasion is small, intensity is high, noiseless, meets the vehicle of all kinds of vehicles
Braking ability requirement；
B, the reliability, enhancement effect of substitute fibre, harmless, safety；
C, it is suitable for industrialized production；
D, performance is better than asbestos friction material.
The above-mentioned formula researched and developed through the invention successfully prepares friction material, the friction of preparation using compound mineral fiber
Material property meets requirement, overcomes the defect of compound mineral fiber itself.
The friction material of the present invention can be used for the fields such as rubber slab or building material.
The treatment process of the present invention is dry technology for production：Dispensing, mixing, preforming, hot pressing, heat treatment, processing, packet
Dress, warehousing finished products.
Place, those skilled in the art can not select from the prior art to the greatest extent in the embodiment of the present invention.
Disclosed above is only the specific implementation mode of the present invention, but scope of protection of the present invention is not limited thereto, is appointed
What those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, answer
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be with above-mentioned scope of the claims
It is accurate.
Claims (8)
1. a kind of asbestos-free friction material, which is characterized in that the friction material includes the raw material of following mass percent：
Phenolic resin 15%-20%, nitrile rubber powder 1%-5%, compound mineral fiber 20%-30%, glass fibre 5%-9%,
Natural graphite 5%-8%, artificial graphite 3%-5%, petroleum coke carbon dust 3%-5%, cashew nut oil Frication powder 2%-5%, magnesia
3%-5%, dolomite dust 10%-15% increase rub material 2%-5%, releasing agent 0.4%-0.6%, colorant 0.8%-
1.2%, vermiculite 1-5%.
2. a kind of asbestos-free friction material as described in claim 1, which is characterized in that the friction material includes following quality
The raw material of percentage：Phenolic resin 16%-19%, nitrile rubber powder 2%-5%, compound mineral fiber 22%-28%, glass fibers
Tie up 6%-9%, natural graphite 6%-8%, artificial graphite 4%-5%, petroleum coke carbon dust 4%-5%, cashew nut oil Frication powder 3%-
5%, magnesia 4%-5%, dolomite dust 12%-15% increase the material 3%-5% that rubs, releasing agent 0.5%-0.6%, colorant
0.9%-1.2%, vermiculite 2-5%.
3. a kind of asbestos-free friction material as described in claim 1, which is characterized in that the friction material includes following quality
The raw material of percentage：Phenolic resin 16%, nitrile rubber powder 4%, compound mineral fiber 27.5%, glass fibre 9%, natural stone
Ink 7%, artificial graphite 4%, petroleum coke carbon dust 3%, cashew nut oil Frication powder 3%, magnesia 4%, dolomite dust 13% increase the material that rubs
Material 4%, releasing agent 0.5%, colorant 1.0%, vermiculite 4%.
4. a kind of asbestos-free friction material as described in claim 1, which is characterized in that the increasing rub material be aluminium oxide and/
Or chromite.
5. a kind of asbestos-free friction material as described in claim 1, which is characterized in that the friction material is at 100 DEG C -300
Friction coefficient at a temperature of DEG C is 0.40-0.46, and wear rate is 0.12 × 10- 7cm3/N·m-0.22×10- 7cm3/N·m。
6. a kind of asbestos-free friction material as described in claim 1, which is characterized in that the compound mineral fiber at 800 DEG C,
1h, loss on ignition are less than or equal to 10%；The capacity of the compound mineral fiber is 0.13-15g/cm3；The compound mineral fiber
Moisture is less than 1.5%.
7. a kind of preparation method of asbestos-free friction material, including：Dispensing, preforming, hot pressing, is heat-treated and is processed into mixing
Type；It is characterized in that, the formula of the dispensing friction material as claimed in any one of claims 1 to 6.
8. a kind of application of compound mineral fiber in preparing asbestos-free friction material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810228006.2A CN108468735B (en) | 2018-03-20 | 2018-03-20 | Asbestos-free friction material and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810228006.2A CN108468735B (en) | 2018-03-20 | 2018-03-20 | Asbestos-free friction material and preparation method and application thereof |
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| CN108468735A true CN108468735A (en) | 2018-08-31 |
| CN108468735B CN108468735B (en) | 2020-05-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538670A (en) * | 2018-11-14 | 2019-03-29 | 东台市华阳玻纤有限责任公司 | A kind of asbestos-free friction material for brake ribbon |
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| JPH06287322A (en) * | 1993-03-31 | 1994-10-11 | Nippon Valqua Ind Ltd | Asbestos-free friction material |
| CN1350130A (en) * | 2001-12-20 | 2002-05-22 | 石油大学(华东) | Semi-soft ceramic type asbestos-free friction material and its production process |
| CN1986611A (en) * | 2006-11-08 | 2007-06-27 | 信义集团公司 | Composite fiber friction material |
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