CN1084447C - Paper base friction material and its production method - Google Patents
Paper base friction material and its production method Download PDFInfo
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- CN1084447C CN1084447C CN99114959A CN99114959A CN1084447C CN 1084447 C CN1084447 C CN 1084447C CN 99114959 A CN99114959 A CN 99114959A CN 99114959 A CN99114959 A CN 99114959A CN 1084447 C CN1084447 C CN 1084447C
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Abstract
The present invention relates to a paper-base friction material and a preparation method thereof, and the paper-base friction material is used for making friction wafers which are used in power transmission and braking assemblies of machines, vehicles, ships, etc. The paper-base friction material comprises the component content (weight percent) of 35 to 56% of bamboo fiber or/and wood fiber, 7 to 14% of diatomaceous earth or/and silicon dioxide, 6 to 30% graphite powder and 15 to 30% of thermohardening resin. The present invention has the preparation method that the bamboo fiber, the abrasive and the friction modifying agent in proportion are made into a product by wet ball milling, making, punching, soaking in the thermohardening resin used as the plasticizer, heat setting, application with a core board and heat curing. The paper-base friction material has the advantages of stable product performance, wide source of the raw materials, simple and practical preparation method and low cost. The preparation method can foresee the product density.
Description
The present invention relates to a kind of friction material, particularly a kind of paper friction material and manufacture method thereof that is used for making the friction plate of power transmission such as machinery, vehicle, boats and ships, brake assembly.
Wet clutch has appearred in the fifties initial stage in this century in automotive industry, this at that time wet clutch generally all adopts the metal friction sheet, and the quiet coefficient of kinetic friction of this friction plate causes that than bigger than normal joint is not steady, and noise is big; Until early seventies, the U.S. just brings into use the paper substrate friction element in the wet type operating mode.Disclose a kind of paper friction material as U. S. Patent 4256801, it is that elastic material with carbon fiber, cellulose fiber, fire-resistant organic fiber, certain filler and oil resistant is in conjunction with forming sheet material, reusable heat thermosetting resin dipping forms, and wherein said cellulose fiber comprises alpha-cellulose, sulphurous acid cellulose, cotton, flax, rag etc.Can be clear that from this patent documentation the kinds of fibers that its raw material selects for use is mixed and disorderly, and the quality fluctuation scope that has is very big, as rag, the price that has is more expensive, as carbon fiber; More not enough is owing to there are differences on performance between the various fibers, make the technology difficulty increase to be unfavorable for industrialized production, and easily because of mixing the inhomogeneous product performance instability that causes, quality of product is difficult to be controlled.
What above-mentioned patent adopted is double plate mill fine grinding technology, and it has higher requirement for material feeding, discharging, and the control difficulty is bigger; Its process step employing insulating varnish after copying paper is made friction element again, and friction element as a rule ringwise, so this step makes its stock utilization low, thereby improved fabricating cost; And this technology is mixed and disorderly, wayward owing to kinds of fibers, and the production poor repeatability can be difficult more so want to control the product that obtains predetermined density from adjusting process.
The object of the present invention is to provide the stable paper friction material of a kind of product performance and provide a kind of simple and easy to do, cost is low, can predict the manufacture method of the paper friction material of product density.
The present invention is achieved in that a kind of paper friction material, and the weight percentage of its key component is: the matrix adopting bamboo fibre is or/and wood fiber 35-56%; Rubbing agent adopts silicious marl or/and silica 7-14%, and friction regulator adopts plumbago 6-30%, and binder adopts phenol-formaldehyde resin modified 15-30%.
Described phenol-formaldehyde resin modified is a FM2123P phenolic resin.
In foregoing invention, when adopting bamboo fibre and wood fiber as the reinforcing fiber of matrix, under the constant situation of matrix total amount, bamboo fibre and wood fiber are any proportioning; When rubbing agent adopted silicious marl and silica, under the constant situation of rubbing agent total amount, silicious marl and silica is proportioning arbitrarily.
In order to improve the plasticity of friction plate, improve wear resistance, it can also increase as the copper powder of friction regulator or/and the nitrile rubber powder, and its gross weight is the 1-2% of weight of the plumbago of 6-30%.
In order to improve the friction factor of friction plate, it can also add as the blanc fixe of rubbing agent or/and glass-cermic powder, and its gross weight is that the silicious marl of 7-14% is or/and the 1-3% of the weight of silica.
For other components and bamboo fibre can be mixed in wet-grinding technology and relative device, roughly close rate of descent is arranged in suspension, described bamboo fibre is or/and wood fiber preferably selects for use the bamboo fibre of length of staple between 1.0-2.5mm or/and wood fiber; Described diatomite particle size is good with-300 orders; Described silica dioxide granule size is good with-300 orders; Described plumbago selects flakey, and size of grain is good with+300 orders; Described copper powder chip select shape, size of grain are good with-300 orders; The size of grain of described nitrile rubber powder is good with the 30-40 order.
As a same reason, the size of grain of described blanc fixe is good with-150 orders; The size of grain of described glass-cermic powder is good with-150 orders.
The manufacture method of above-mentioned paper friction material is characterized in that: according to the above ratio bamboo fibre and rubbing agent, friction regulator are carried out wet ball-milling, and--manufacturing paper with pulp,--stamping-out--floods with binder modified phenolic resin lipoprotein solution that--heat setting--is fitted with central layer--, and heat cure gets finished product; The process conditions of wherein said wet ball-milling are: it is good that the ball milling material concentration is controlled at 10-12%, adopts ceramic ball, and the wet-milling time is 8-12 minute.
Slurry concentration behind the above-mentioned ball milling should be controlled between the 1.4-1.8%, the drying of manufacturing paper with pulp on paper machine again; The solvent of solution heat thermosetting resin or select alcohol for use or select acetone for use or select ethyl acetate for use; The temperature of described heat setting is 60-80 ℃; The temperature of described heat cure is 180-200 ℃, and be 1-1.5 hour curing time.
In the present invention, why select bamboo fibre for use or/and wood fiber as the matrix of reinforcing fiber, not only because their wide material sources, more chief reason is that wood fiber, bamboo fibre are elongated.Than great, hardness height, fiber prescind and aquation easily, and antiseptic property is good, and adopt single bamboo fibre or single wood fiber or approaching bamboo fibre and the wood fiber of performance, keep product performance stable easily, good reproducibility; The present invention select silicious marl or/and silica as rubbing agent, select plumbago as friction regulator, be because they can guarantee in wet-milling to mix with bamboo fibre etc., roughly close rate of descent is arranged in suspension, thereby further guarantee each uniform component distribution, make the friction and wear behavior of product reach consistent.
In manufacture method of the present invention, the tratitional technology of having given up the paper industry agitating pulp, do not adopt the described double plate fine grinding technology of U. S. Patent yet, but adopt the wet ball-milling technological method, in such liquid medium, collision through the porcelain ball, grind, during but the fleeces of the infiltration of accelerating solid powder and infiltration bamboo fibre is poly-, thereby helping each powdery components mixes with the even of bamboo fibre, help prescinding and adjusting the length of bamboo fibre, simultaneously because it is similar to making beating in the paper-making industry, manufacturing paper with pulp of the body paper that more helps rubbing guaranteed that further original paper quality is stable; Changed process step commonly used in the past in the technology of the present invention again, after not adopting the body paper insulating varnish, by product size punching blanking, and adopt earlier body paper by the process step of insulating varnish again behind the product size punching blanking, can reduce consumption of raw materials like this, reduce product cost and help controlling quality of product; And adopt technology of the present invention, and only just can control product density easily by thickness, the weight of adjusting goods, can adjust the friction and wear behavior of paper friction material effectively; In sum, technology of the present invention is a kind of simple and easy to do, and cost is low, can predict the manufacture method of the paper friction material of product density.
The paper friction material that adopts above-mentioned prescription and manufacture method to obtain, detect through MM-1000 type friction material test machine, its coefficient of kinetic friction is between 0.12-0.15, static friction coefficient is between 0.14-0.165, the quiet coefficient of kinetic friction is suitable for being produced on the friction element under the wet type operating mode especially than between the 1.1-1.2.
The invention will be further described below in conjunction with embodiment:
Embodiment 1: a kind of paper friction material, its component and content are (content of all components all is weight percentage): bamboo fibre 45%, silicious marl 2%, silica 8%, plumbago 28%, modified phenolic resin cosmetics 17%.
Manufacture method is as follows: take by weighing the bamboo fibre, silicious marl, silica, the flaky graphite powder that meet technical requirements according to the above ratio and put into pebble mill, add entry, the addition of water is 10 times of above-mentioned substance total amount, wet-milling 10 minutes; Afterwards, take out the ball milling slurry, being diluted with water to solid constituent concentration is 1.6%, manufactures paper with pulp into paper on the paper machine, squeezing, and oven dry gets body paper; The body paper stamping-out is become required size and dimension, take by weighing phenol-formaldehyde resin modified more in proportion, as FM2123P phenolic resin, with the alcohol dissolving, be immersed in the phenol-formaldehyde resin modified alcoholic solution with allowing the even capacity of body paper, dry, 60 ℃ of following heat settings, make the paper substrate friction element then; Clean engineering mechanical clutch central layer, the surface brush adhesive glue is fitted paper substrate friction element and central layer, in curing oven, solidify, and 180 ℃ of solidifying temperatures, the time is 1.5 hours, gets finished product.
The paper friction material that makes like this detects through MM-1000 type friction material test machine, and static friction coefficient is 0.146, and the coefficient of kinetic friction is 0.127, and quiet coefficient of kinetic friction ratio is 1.14.
Embodiment 2: a kind of paper friction material, its component and content are (content of all components all is weight percentage): bamboo fibre 55%, silicious marl 9%, silica 2%, plumbago 6%, modified phenolic resin cosmetics 28%.
Manufacture method is as follows: take by weighing the bamboo fibre, silicious marl, silica, the plumbago that meet technical requirements according to the above ratio and put into pebble mill, add entry, the addition of water is 10 times of above-mentioned substance total amount, wet-milling 10 minutes; Afterwards, take out the ball milling slurry, being diluted with water to solid constituent concentration is 1.8%, manufactures paper with pulp into paper on the paper machine, squeezing, and oven dry gets body paper; The body paper stamping-out is become required size and dimension, take by weighing phenol-formaldehyde resin modified more in proportion, as FM2123P phenolic resin, use acetone solution, be immersed in the phenol-formaldehyde resin modified acetone soln with allowing the even capacity of body paper, dry, 80 ℃ of following heat settings, make the paper substrate friction element then; Clean the automobile clutch central layer, the surface brush adhesive glue is fitted paper substrate friction element and central layer, in curing oven, solidify, and 200 ℃ of solidifying temperatures, the time is 1 hour, gets finished product.
The material that makes detects through MM-1000 type friction material test machine, and static friction coefficient is 0.163, and the coefficient of kinetic friction is 0.143, and quiet coefficient of kinetic friction ratio is 1.14.
Embodiment 3: a kind of paper friction material, its component and content are (content of all components all is weight percentage): bamboo fibre 45%, silicious marl 8%, silica 6%, blanc fixe 0.2%, glass-cermic powder 0.2%, plumbago 20%, nitrile rubber powder 0.2%, modified phenolic resin cosmetics 20.4%.
Manufacture method is with embodiment 1.
Embodiment 4: a kind of paper friction material, and its component and content are (content of all components all is weight percentage): bamboo fibre 40%, silicious marl 3%, silica 5%, blanc fixe 0.2%, plumbago 30%, copper powder 0.3%, modified phenolic resin cosmetics 21.5%.
Manufacture method is with embodiment 1.
Embodiment 5: a kind of paper friction material, its component and content are (content of all components all is weight percentage): bamboo fibre 53.8%, silicious marl 5%, silica 5%, plumbago 20%, copper powder 0.2%, modified phenolic resin cosmetics 16%.
Manufacture method is with embodiment 1.
Embodiment 6: a kind of paper friction material, its component and content are (content of all components all is weight percentage): bamboo fibre 35%, silica 1 4%, plumbago 30%, modified phenolic resin cosmetics 21%.
Manufacture method is with embodiment 1.
Embodiment 7: a kind of paper friction material, and its component and content are (content of all components all is weight percentage): bamboo fibre 37.4%, silicious marl 14%, blanc fixe 0.3%, plumbago 30%, nitrile rubber powder 0.2%, copper powder 0.1%, modified phenolic resin cosmetics 18%.
Manufacture method is with embodiment 1.
Embodiment 8: a kind of paper friction material, its component and content are (content of all components all is weight percentage): bamboo fibre 44.3%, silica 1 3%, blanc fixe 0.15%, Beijing glass-cermic powder 0.15%, plumbago 20%, nitrile rubber powder 0.2%, copper powder 0.2%, modified phenolic resin cosmetics 22%.
Manufacture method is with embodiment 1.
Embodiment 9: a kind of paper friction material, and its component and content are (content of all components all is weight percentage): bamboo fibre 43.4%, silica 1 4%, blanc fixe 0.3%, plumbago 16%, nitrile rubber powder 0.2%, copper powder 0.1%, modified phenolic resin cosmetics 26%.
Manufacture method is with embodiment 1.
Embodiment 10: a kind of paper friction material, and its component and content are (content of all components all is weight percentage): bamboo fibre 44%, silica 1 0%, Beijing glass-cermic powder 0.2%, plumbago 18%, nitrile rubber powder 0.15%, copper powder 0.15%, modified phenolic resin cosmetics 27.5%.
Manufacture method is with embodiment 1.
Embodiment 11: a kind of paper friction material, its component and content are (content of all components all is weight percentage): wood fiber 45%, silicious marl 8%, silica 6%, blanc fixe 0.2%, Beijing glass-cermic powder 0.2%, plumbago 20%, nitrile rubber powder 0.1%, copper powder 0.1%, modified phenolic resin cosmetics 20.4%.
Manufacture method is with embodiment 1.
Claims (9)
1, a kind of paper friction material, the weight percentage of its key component is:
Matrix: bamboo fibre is or/and wood fiber 35-56%;
Rubbing agent: silicious marl is or/and silica 7-14%;
Friction regulator: plumbago 6-30%;
Binder: phenol-formaldehyde resin modified 15-30%.
2. paper friction material as claimed in claim 1 is characterized in that: described phenol-formaldehyde resin modified is a FM2123P phenolic resin.
3. paper friction material as claimed in claim 1 is characterized in that: when matrix adopting bamboo fibre and wood fiber, under the constant situation of matrix total amount, bamboo fibre and wood fiber are any proportioning; When rubbing agent adopted silicious marl and silica, under the constant situation of rubbing agent total amount, silicious marl and silica is proportioning arbitrarily.
4. paper friction material as claimed in claim 1 is characterized in that: it also contains copper powder or/and the nitrile rubber powder, and its gross weight is the 1-2% of weight of the plumbago of 6-30%.
5. as claim 1 or 4 described paper friction materials, it is characterized in that: it also contains blanc fixe or/and glass-cermic powder, and its gross weight is that 7-14% silicious marl is or/and the 1-3% of the weight of silica.
6. paper friction material as claimed in claim 4 is characterized in that: described bamboo fibre or/and the length of staple of wood fiber between 1.0-2.5mm; Described diatomite particle size is-300 orders; Described silica dioxide granule size is-300 orders; Described plumbago selects flakey, and size of grain is+300 orders; Described copper powder chip select shape, size of grain is-300 orders; The size of grain of described nitrile rubber powder is the 30-40 order.
7. paper friction material as claimed in claim 5 is characterized in that: the size of grain of described heavy crystalline flour is-150 orders; The size of grain of described glass-cermic powder is-150 orders.
8. the manufacture method of a paper friction material is characterized in that: in the ratio described in the claim 1 matrix, rubbing agent, friction regulator are carried out wet ball-milling that--manufacturing paper with pulp,------heat setting--is fitted with central layer--, and heat cure gets finished product to stamping-out with flooding in the binder modified phenolic resin cosmetics solution; Wherein the process conditions of wet ball-milling are: the ball milling material concentration is controlled at 10-12%, adopts ceramic ball, and the wet-milling time is 8-12 minute.
9. the manufacture method of paper friction material as claimed in claim 8, it is characterized in that: the slurry concentration behind the ball milling should be controlled between the 1.4-1.8%, the drying of manufacturing paper with pulp on paper machine again; The solvent of soluble modified phenolic resin or select alcohol for use or select acetone for use or select ethyl acetate for use; The temperature of described heat setting is 60-80 ℃; The temperature of described heat cure is 180-200 ℃, and be 1-1.5 hour curing time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99114959A CN1084447C (en) | 1999-06-25 | 1999-06-25 | Paper base friction material and its production method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99114959A CN1084447C (en) | 1999-06-25 | 1999-06-25 | Paper base friction material and its production method |
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| CN1292465A CN1292465A (en) | 2001-04-25 |
| CN1084447C true CN1084447C (en) | 2002-05-08 |
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| CN99114959A Expired - Fee Related CN1084447C (en) | 1999-06-25 | 1999-06-25 | Paper base friction material and its production method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300483C (en) * | 2003-10-10 | 2007-02-14 | 黄石赛福摩擦材料有限公司 | Polymeric composite paper-base firction material |
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| DE10342271B4 (en) * | 2003-09-12 | 2014-07-10 | Zf Friedrichshafen Ag | Friction lining plate |
| EP2023001A3 (en) | 2007-08-10 | 2012-03-21 | Aisin Kako Kabushiki Kaisha | Wet friction material |
| CN102002883B (en) * | 2010-09-20 | 2012-10-31 | 华南理工大学 | Wet type paper-based friction material as well as preparation method and application thereof |
| CN102478090B (en) * | 2010-11-23 | 2013-11-06 | 来安县隆华摩擦材料有限公司 | Novel environmental-friendly wear and high-temperature resistant friction plate |
| CN103361031B (en) * | 2013-07-18 | 2014-12-03 | 李美凤 | Brake pad for flax fiber reinforced environmental-friendly car and preparation method thereof |
| CN103453057B (en) * | 2013-07-28 | 2016-01-27 | 李美凤 | A kind of low noise environmental protection automobile brake sheet being mixed with enteromorpha fiber and preparation method thereof |
| CN105065522A (en) * | 2015-07-09 | 2015-11-18 | 辽宁九通摩擦材料有限公司 | Vehicle brake liner containing pinecone powder and preparation method thereof |
| CN105041928A (en) * | 2015-07-09 | 2015-11-11 | 辽宁九通摩擦材料有限公司 | Automobile disk type brake pad and manufacturing method thereof |
| CN105132221A (en) * | 2015-08-19 | 2015-12-09 | 洛娃科技实业集团有限公司 | Green environment-friendly leatherware cleaning agent and production technology thereof |
| DE102015223893A1 (en) * | 2015-12-01 | 2017-06-01 | Schaeffler Technologies AG & Co. KG | Wet running friction lining |
| CN107474797A (en) * | 2017-08-17 | 2017-12-15 | 苏州曼里尼斯金属科技有限公司 | A kind of phenolic resin modified metal-free ceramic friction material |
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| US4197223A (en) * | 1977-08-10 | 1980-04-08 | Ferodo Limited | Asbestos free friction materials |
| US4226816A (en) * | 1977-07-16 | 1980-10-07 | Aisin Chemical Company, Limited | Method of manufacturing a clutch facing of the type used for automotive automatic transmissions |
| US4256801A (en) * | 1979-12-14 | 1981-03-17 | Raybestos-Manhattan, Incorporated | Carbon fiber/flame-resistant organic fiber sheet as a friction material |
| US4522290A (en) * | 1981-11-20 | 1985-06-11 | Deutsche Automobilgesellschaft Mit Beschrankter Haftung | Frictional lining for a wet clutch or brake |
| CN1184124A (en) * | 1996-12-05 | 1998-06-10 | 孙岩 | Asbestos-free friction material and its production process |
-
1999
- 1999-06-25 CN CN99114959A patent/CN1084447C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4226816A (en) * | 1977-07-16 | 1980-10-07 | Aisin Chemical Company, Limited | Method of manufacturing a clutch facing of the type used for automotive automatic transmissions |
| US4197223A (en) * | 1977-08-10 | 1980-04-08 | Ferodo Limited | Asbestos free friction materials |
| US4256801A (en) * | 1979-12-14 | 1981-03-17 | Raybestos-Manhattan, Incorporated | Carbon fiber/flame-resistant organic fiber sheet as a friction material |
| US4522290A (en) * | 1981-11-20 | 1985-06-11 | Deutsche Automobilgesellschaft Mit Beschrankter Haftung | Frictional lining for a wet clutch or brake |
| CN1184124A (en) * | 1996-12-05 | 1998-06-10 | 孙岩 | Asbestos-free friction material and its production process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300483C (en) * | 2003-10-10 | 2007-02-14 | 黄石赛福摩擦材料有限公司 | Polymeric composite paper-base firction material |
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| CN1292465A (en) | 2001-04-25 |
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