CN1048047A - A kind of asbestos-free friction material - Google Patents
A kind of asbestos-free friction material Download PDFInfo
- Publication number
- CN1048047A CN1048047A CN 90105202 CN90105202A CN1048047A CN 1048047 A CN1048047 A CN 1048047A CN 90105202 CN90105202 CN 90105202 CN 90105202 A CN90105202 A CN 90105202A CN 1048047 A CN1048047 A CN 1048047A
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- CN
- China
- Prior art keywords
- asbestos
- fibre
- friction
- friction material
- free 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Braking Arrangements (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
A kind of asbestos-free friction material is to be strongthener with basalt fibre and polyacrylonitrile fibre, and wherein the basalt fibre consumption is 2-50 (weight fraction), and optimum amount is 15-40, and the polyacrylonitrile fibre consumption is 5-50 (weight fraction), and optimum amount is 10-30.Made friction materials has good springiness, and hardness is low, and stickiness is good, and high and stable frictional coefficient and low wear rate are arranged, and does not scratch antithesis.It is applicable to makes stopper, clutch friction plate, is specially adapted to make the marine clutch friction plate.
Description
The asbestos-free friction material of manufacturing of the present invention is to be used to make stopper, clutch friction plate, is specially adapted to make the marine clutch friction plate.
Current friction materials commonly used generally is to be matrix with resin or synthetic rubber, is strongthener with asbestos or its cloth, is aided with friction modifier, through mix, hot pressing forms.Owing to contain asbestos and cloth thereof in the material, thereby in asbestos processing, weaving, manufacturing and use, produce asbestos dust and fly upward and be suspended in the air, severe contamination Working environment, and harmful to HUMAN HEALTH.Early seventies, production and application that states such as West Europe, the U.S., Japan just conduct a research and develop asbestos-free friction material energetically.
Development along with modern technologies and transportation, requirement to friction materials is more and more harsh, not only require material to have enough physical strengths and good coating performance, also requiring has enough height and stable frictional coefficient, not only require material that good abrasion resistance is arranged, and must not scratch antithesis and lower wear rate is arranged.For this reason, each state all has high physical strength making great efforts development, and stable friction and wear behavior does not scratch the friction materials of antithesis.United States Patent (USP) 4384054(1983.5 for example) make strongthener with diabase and steel fiber, English Patent GB208306A makes asbestos-free friction material with glass fibre as strongthener.Above-mentioned materials adjust and high pressure under braking all can the generating material wearing and tearing increase and scratch antithesis, and material use later stage friction surface easily produces crack performance, shortened work-ing life.
Purpose of the present invention be exactly to overcome weak point in the above-mentioned prior art and invent a kind ofly have high friction coefficient and lower wear rate, and high resilience has good coating performance, does not damage the asbestos-free friction material of antithesis.
Main points of the present invention are: use basalt fibre and polyacrylonitrile fibre to replace fibrous magnesium silicate commonly used in the past as strongthener, their shared weight percents in friction materials are basalt fibre 5-50, and optimum amount is 15-40; Polyacrylonitrile fibre 2-50, optimum amount are 10-30, and the body material of being made up of paracril and resol in the friction materials, and all are materials commonly used in the friction industry by the friction modifier that copper powder, Sulfur, barium sulfate and graphite are formed.
The used basalt fibre of the present invention mainly is by SiO
2, Al
2O
3, CaO, MgO, etc. composition.Typical analysis of components is: SiO
2, 43.92%; Al
2O
315.27%; CaO21.8%; MgO9.47%.780 ℃ of its sintering temperatures, acidity 1.9. basalt fibre length is controlled at 2-10mm.It and resin and rubber bound are good, have higher and stable frictional coefficient.And used polyacrylonitrile fibre should be controlled at 5-15mm according to the needs of technology.Polyacrylonitrile fibre has very high tension and shock strength, and this fiber is having under the tension force effect, can generate with oxygen effect in the air under 200～300 ℃ room temperature and give oxidized fibre.Giving oxidized fibre is a kind of good fiber of anti-the flame, and it has high temperature resistant and anti abrasive advantage.And polyacrylonitrile fibre at high temperature can fusion, abrasive dust melts can wear and tear material in the high temperature friction process under bonds, fill up rough friction surface, make its friction surface generate a kind of interfacial film that helps frictional wear, make the frictional coefficient of friction materials more stable, and reduced wear rate.
Asbestos-free friction material manufacture method of the present invention be earlier with the rubber mastication and mixing after, again with resin, fiber and other friction modifiers behind thorough mixing, under 160 ℃ of temperature, with 245 * 10
5Pa(250kgf/cm
2) under the pressure, every mm thick was pressed into required product in 1.5 minutes:
Embodiment 1
Composition: component (weight %):
Resol 10
Paracril 15
Basalt fibre 20
Polyacrylonitrile fibre 20
Copper powder 10
Sulphur 3
Barium sulfate 15
Graphite 2
Behind thorough mixing, hot repressing becomes needed product with above-mentioned materials, thermal treatment 4～5 hours under 200 ℃ of temperature then.It is as follows that this material and traditional asbestos friction material are pressed GB5763-86 automobile brake lining plate standard testing result:
Annotate: 1. μ represents frictional coefficient in the table.2. △ W △ W=* 10 of representing to wear and tear in the table
-7CM
3/ N * M
Embodiment 2
Composition: component (weight %)
Resol 15
Paracril 10
Basalt fibre 25
Polyacrylonitrile fibre 15
Sulphur 3
Ferric oxide 12
Copper powder 20
Behind thorough mixing, press among the embodiment 1 saidly above-mentioned materials, be hot pressed into the test ring of φ 75 * 53mm, thick 20mm.This test ring is tested in following condition: at flow is 4ml/cm
2In the HJ-20GB443-64 lubricating oil of min, inertia is 0.4kgf.cm.s
2, rotating speed is 3800r/min, 5000r/min, and load is 14.7 * 10
5Pa(15kgf/cm
2), 19.6 * 10
5Pa(20kgf/cm
2), 25.3 * 10
5Pa(25.8kgf/cm
2) condition under brake, the test-results of friction materials of the present invention and asbestos fabric material is as follows:
Claims (4)
1, a kind of is basic material with rubber or resin, and basalt fibre and polyacrylonitrile fibre are strongthener, adds other friction modifier and the asbestos-free friction material formed, and it is characterized in that: in this friction materials, the content of basalt fibre is 5-50; The content of polyacrylonitrile fibre is 2-50.
2, according to claim 1 said asbestos-free friction material, the optimum amount that it is characterized in that basalt fibre is the 15-40(weight percent).
3, according to claim 1 said asbestos-free friction material, the optimum amount that it is characterized in that polyacrylonitrile fibre is the 10-30(weight percent).
4, according to claim 1 said asbestos-free friction material, its basalt fibre length is 2-10mm, and polyacrylonitrile fibre length is 5-15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90105202 CN1048047A (en) | 1989-12-26 | 1989-12-26 | A kind of asbestos-free friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90105202 CN1048047A (en) | 1989-12-26 | 1989-12-26 | A kind of asbestos-free friction material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1048047A true CN1048047A (en) | 1990-12-26 |
Family
ID=4879033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90105202 Withdrawn CN1048047A (en) | 1989-12-26 | 1989-12-26 | A kind of asbestos-free friction material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1048047A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235153B (en) * | 2008-01-09 | 2010-06-09 | 韩德忠 | Asbestos-free composite enhancement fibre for friction material and producing technique thereof |
| CN102449098A (en) * | 2009-06-01 | 2012-05-09 | 日立化成工业株式会社 | Friction material composition, friction material obtained from same, and friction member |
| CN102501298A (en) * | 2011-09-23 | 2012-06-20 | 浙江国泰密封材料股份有限公司 | Completely-asbestos-free environment-friendly sealing plate and method for preparation thereof |
| CN107805399A (en) * | 2017-11-29 | 2018-03-16 | 吉林大学 | One specific admixture natural fiber enhancing friction material and preparation method thereof |
-
1989
- 1989-12-26 CN CN 90105202 patent/CN1048047A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235153B (en) * | 2008-01-09 | 2010-06-09 | 韩德忠 | Asbestos-free composite enhancement fibre for friction material and producing technique thereof |
| CN102449098A (en) * | 2009-06-01 | 2012-05-09 | 日立化成工业株式会社 | Friction material composition, friction material obtained from same, and friction member |
| US9039825B2 (en) | 2009-06-01 | 2015-05-26 | Hitachi Chemical Co., Ltd. | Friction material composition, friction material using the same, and friction member |
| CN102449098B (en) * | 2009-06-01 | 2015-07-15 | 日立化成株式会社 | Friction material composition, friction material obtained from same, and friction member |
| US9086105B2 (en) | 2009-06-01 | 2015-07-21 | Hitachi Chemical Company, Ltd. | Friction material composition, friction material using the same, and friction member |
| US9410591B2 (en) | 2009-06-01 | 2016-08-09 | Hitachi Chemical Company, Ltd | Friction material composition, friction material using the same, and friction member |
| CN102501298A (en) * | 2011-09-23 | 2012-06-20 | 浙江国泰密封材料股份有限公司 | Completely-asbestos-free environment-friendly sealing plate and method for preparation thereof |
| CN102501298B (en) * | 2011-09-23 | 2014-01-15 | 浙江国泰密封材料股份有限公司 | Completely-asbestos-free environment-friendly sealing plate and method for preparation thereof |
| CN107805399A (en) * | 2017-11-29 | 2018-03-16 | 吉林大学 | One specific admixture natural fiber enhancing friction material and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WW01 | Invention patent application withdrawn after publication |