CN102661344B - Layer-shaped friction material with high intensity and low noise and preparation method thereof - Google Patents
Layer-shaped friction material with high intensity and low noise and preparation method thereof Download PDFInfo
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- CN102661344B CN102661344B CN201210125373.2A CN201210125373A CN102661344B CN 102661344 B CN102661344 B CN 102661344B CN 201210125373 A CN201210125373 A CN 201210125373A CN 102661344 B CN102661344 B CN 102661344B
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Abstract
The invention provides a layer-shaped friction material with high intensity and low noise. The layer-shaped friction material comprises a basic cloth layer, a friction layer and a damping grinding layer; each friction layer and damping grinding layer are fixedly adhered to the basic cloth layer; the friction layer and the basic cloth layer adhered to the lower side of the friction layer are formed into a friction reinforced structure A; the damping grinding layer and the basic cloth layer adhered to the lower side of the damping grinding layer are formed into a damping grinding reinforced structure B; 1-2 layers A and 1-2 layers B are arranged vertically and alternately to form into friction materials; and A and B are fixed by bonding. The invention further provides a preparation method of the friction material. The layer-shaped friction material provided by the invention overcomes the disadvantages in the prior art, the intensity is high, the wear resistance is strong, the noise is low and the material is safe and practical.
Description
Technical field
The present invention relates to the friction material using in a kind of automobile and mechanical transmission brake field, be specially the friction material of a kind of high strength, low noise, MULTILAYER COMPOSITE, the present invention also provides the preparation method of this friction material simultaneously.
Background technique
Friction material is widely used in automobile and mechanical transmission brake field, due to the raising of Vehicle Speed and inertia, more and more higher for the requirement of friction material in recent years.Special in bus and other riding and commercial car of having relatively high expectations at some, the intensity of friction material, heat resistance and noise are just the important investigation indexs of material selection.Friction material used is broadly divided into powder metallurgy, carbon-to-carbon and resin-base composite friction material in the market, and wherein resin-base composite friction material occupies larger specific gravity.Resin-base composite friction material generally consists of binder, reinforcing material, filler and friction modifier at present, and wherein reinforcing material generally adopts short fibre.Along with people are more and more higher to the requirement of friction material, the intensity of existing friction material and antidetonation top ability also more and more cannot meet people's user demand, the focus of research in this field when how a kind of high strength, low noise friction material are provided.Patent CN 100520106C has proposed a kind ofly with Weave type carbon fibre material, to make main stor(e)y and by the woven friction material that is deposited on secondary layer that friction modifying particles on main stor(e)y forms and forms, but every layer of the resulting multilayer material of this patent is all to consist of identical structure.Patent CN101105205A has proposed the friction material configuration being at least comprised of two layers of material, thereby show different wearing characters in the wearing and tearing using process of friction material, but it only can be applicable to the disk type brake disc with dunnage, and the multi-layer compound structure that not use by rock wool fibers cloth be matrix.The friction material providing in above-mentioned patent is not well positioned to meet the demand of people to friction material high strength and low noise.
Summary of the invention
The invention provides a kind of stratiform friction material of high strength with low noise, solved the deficiency in above-mentioned background technology, its intensity is high, abrasion resistance is strong, noise is low, safe and practical.
Realizing the technological scheme that above-mentioned purpose of the present invention adopts is:
A kind of stratiform friction material of high strength with low noise, at least comprise base cloth layer, friction layer and damping grinding layer, every one deck friction layer and damping grinding layer all bond and are fixed on base cloth layer, base cloth layer is at least provided with 4 layers, the thickness of described base cloth layer is not more than 0.5 millimeter, and the thickness of friction layer and damping grinding layer is 0.5～1.5 millimeter; Wherein the base cloth layer of friction layer and its below bonding forms friction enhanced structure A jointly, the base cloth layer of damping grinding layer and its below bonding jointly forms damping and grinds reinforcement structure B, 1～2 layer of A and 1～2 layer of stacked formation friction material of B alternatively up and down, and all by bonding, fix between A and B.
1 layer of A and 1 layer of B alternatively up and down are stacked.
Each component of described friction layer material therefor and the mass percent of each component are: phenolic resin: 15～20%, and nitrile butadiene rubber: 2～5%, calcium carbonate 15～30%, barium sulphate 15～30%, graphite 5～20%, aluminium oxide 2～4%, molybdenum sulfide 2～5%, copper fiber 1～3%.
Described each component of damping grinding layer material therefor and the mass percent of each component are: nitrile butadiene rubber: 15～20%, phenolic resin: 5～10%, graphite: 5～20%, calcium carbonate 15～30%, barium sulphate 15～30%, aluminium oxide: 5～8%, zircon: 2～8%, chromite: 2～8%.
Described base cloth layer is basalt fiber cloth.
The present invention also provides the preparation method of the stratiform friction material of above-mentioned high strength with low noise simultaneously, and its concrete steps are:
(1) preparation friction layer material and damping grinding layer material, stir;
(2) base cloth layer is flooded to liquid adhesive, then in the one side of base cloth layer, evenly smear friction layer material or damping grinding layer material, the thickness of smearing is 0.5～1.5 millimeter;
(3) by facing up of being coated with friction layer material or damping grinding layer material on base cloth layer, wherein the base cloth layer of friction material and its below forms friction enhanced structure A jointly, damping abrasives and its below base cloth layer jointly form damping and grind reinforcement structure B, then by 1～2 layer of A and 1～2 layer of stacked laying of B alternatively up and down, base cloth layer is at least laminated with 4 layers, makes preforming material;
(4) by preforming material roll-in, cut;
(5) after heat-pressure curing, make the stratiform friction material of this high strength with low noise.
1 layer of A and 1 layer of stacked laying of B alternatively up and down in step (3).
In step (1), each component of damping grinding layer material and the mass percent of each component of configuration are: nitrile butadiene rubber: 15～20%, phenolic resin: 5～10%, graphite: 5～20%, calcium carbonate 10～30%, barium sulphate 10～30%, aluminium oxide: 5～8%, zircon: 2～8%, chromite: 2～8%; Each component of friction layer material and the mass percent of each component are: phenolic resin: 15～20%, and nitrile butadiene rubber: 2～5%, calcium carbonate 15～30%, barium sulphate 15～30%, graphite 5～20%, aluminium oxide 2～4%, molybdenum sulfide 2～5%, copper fiber 1～3%.
In step (2), base cloth layer is selected basalt fiber cloth, and Bond is selected phenolic resin.
In step (5), heating-up temperature is 140～180 ℃, and ambient pressure is 10～20MPa, and be 5～25 minutes curing time.
The stratiform friction material of high strength with low noise provided by the invention has following advantage: the base cloth layer consisting of basalt fiber cloth can provide high mechanical strength, improves the heat resistance of material.Damping grinding layer can play and absorb the effect tremble and to grind the carbonization attachment on self surface and antithesis dish/hub, thereby friction layer maintains stable friction factor and wear rate, provides normal friction catch performance.With respect to the structure of single level, thereby being more conducive to absorb trembling in friction process, the different Multi-layer design structure of this vibration frequency provided by the invention reduces the probability of noise producing.And in friction and wear process, carrying out along with wearing and tearing, friction layer and grinding layer will alternately appear on rubbing surface, this mode that alternately participates in friction can avoid that common friction material is long-term and use in institute produces and is difficult to self carbon distribution surperficial and friction pair dish/hub of removing, thereby solved braking failure and the brake noise bringing due to these carbon distributions.
Embodiment
Below in conjunction with specific embodiment, the present invention is done to detailed specific description.
Embodiment 1
A stratiform friction material for high strength with low noise, comprises base cloth layer, friction layer and damping grinding layer, and every one deck friction layer and damping grinding layer all bond and be fixed on base cloth layer, and base cloth layer is established and is of five storeys altogether.Base cloth layer is selected basalt fiber cloth, and its thickness is 0.5 millimeter.
The thickness of friction layer and damping grinding layer is 1 millimeter, wherein each component of damping grinding layer material therefor and the mass percent of each component are: nitrile butadiene rubber: 15%, phenolic resin: 5%, graphite: 5%, calcium carbonate 30%, barium sulphate 30%, aluminium oxide: 8%, zircon: 4%, chromite: 3%.Each component of friction layer material therefor and the mass percent of each component are: phenolic resin: 20%, and nitrile butadiene rubber: 5%, calcium carbonate: 30%, barium sulphate: 20%, graphite: 20%, aluminium oxide: 2%, molybdenum sulfide: 2%, copper fiber: 1%.
The base cloth layer of friction layer and its below bonding forms friction enhanced structure A jointly, the base cloth layer of damping grinding layer and its below bonding jointly forms damping and grinds reinforcement structure B, 1 layer of A and 1 layer of stacked formation friction material of B alternatively up and down, and all by bonding, fix between A and B.
The preparation method of the stratiform friction material of the high strength with low noise providing in the present embodiment is as follows:
(1) according to aforementioned proportion preparation friction layer material and damping grinding layer material, stir;
(2) by base cloth layer, be basalt fiber cloth dipping liquid phenolic resin, then in the one side of basalt fiber cloth, evenly smear friction layer material or damping grinding layer material, the thickness of smearing is 1 millimeter;
(3) by facing up of being coated with friction layer material or damping grinding layer material on base cloth layer, wherein the base cloth layer of friction material and its below forms friction enhanced structure A jointly, damping abrasives and its below base cloth layer jointly form damping and grind reinforcement structure B, then by 1 layer of A and 1 layer of stacked laying of B alternatively up and down, base cloth layer is laminated with 8 layers, makes preforming material;
(4) by preforming material roll-in, cut;
(5), under the condition that is 15MPa at 145 ℃, ambient pressure, solidify and after 10 minutes, make the stratiform friction material of this high strength with low noise.
By GB5763-2008, to the friction material test making in the present embodiment, wherein impact strength is 0.9J/cm
2, 200 ℃ of rates of thermal expansion are 0.7%, room temperature compressibility is 0.6%, 200 ℃ of compressibility 1.5%.Friction and wear behavior test result, in Table 1, does not produce noise in friction process, product has high strength, low noise and the overall merit such as high temperature resistant.
Table 1 friction and wear behavior test result
Embodiment 2
A stratiform friction material for high strength with low noise, comprises base cloth layer, friction layer and damping grinding layer, and every one deck friction layer and damping grinding layer all bond and be fixed on base cloth layer, and base cloth layer is provided with 12 layers altogether.Base cloth layer is selected basalt fiber cloth, and its thickness is 0.4 millimeter.
The thickness of friction layer is 0.7 millimeter, the thickness of damping grinding layer is 1.3 millimeters, wherein each component of damping grinding layer material therefor and the mass percent of each component are: nitrile butadiene rubber: 20%, phenolic resin: 10%, graphite: 20%, calcium carbonate: 10%, barium sulphate: 20%, aluminium oxide: 5%, zircon: 7%, chromite: 8%.Each component of friction layer material therefor and the mass percent of each component are: phenolic resin: 15%, and nitrile butadiene rubber: 2%, calcium carbonate: 30%, barium sulphate: 30%, graphite: 12%, aluminium oxide: 4%, molybdenum sulfide: 4%, copper fiber: 3%.
The base cloth layer of friction layer and its below bonding forms friction enhanced structure A jointly, the base cloth layer of damping grinding layer and its below bonding jointly forms damping and grinds reinforcement structure B, 2 layers of A and 1 layer of stacked formation friction material of B alternatively up and down, and all by bonding, fix between A and B.
The preparation method of the stratiform friction material of the high strength with low noise providing in the present embodiment is as follows:
(1) according to aforementioned proportion preparation friction layer material and damping grinding layer material, stir;
(2) by base cloth layer, be basalt fiber cloth dipping liquid phenolic resin, then in the one side of basalt fiber cloth, evenly smear friction layer material or damping grinding layer material, the thickness of friction layer applying material is 0.7 millimeter, and the thickness of damping grinding layer applying material is 1.3 millimeters;
(3) by facing up of being coated with friction layer material or damping grinding layer material on base cloth layer, wherein the base cloth layer of friction material and its below forms friction enhanced structure A jointly, damping abrasives and its below base cloth layer jointly form damping and grind reinforcement structure B, then by 2 layers of A and 1 layer of stacked laying of B alternatively up and down, base cloth layer is laminated with 12 layers, makes preforming material;
(4) by preforming material roll-in, cut;
(5), under the condition that is 18MPa at 175 ℃, ambient pressure, solidify and after 15 minutes, make the stratiform friction material of this high strength with low noise.
By GB5763-2008, the friction material making in the present embodiment is tested, wherein impact strength is 0.88J/cm
2, 200 ℃ of rates of thermal expansion are 0.8%, room temperature compressibility is 0.7%, 200 ℃ of compressibility 1.4%.Friction and wear behavior test result, in Table 2, does not produce noise in friction process, product has high strength, low noise and the overall merit such as high temperature resistant.
Table 2 friction and wear behavior test result
Embodiment 3
A stratiform friction material for high strength with low noise, comprises base cloth layer, friction layer and damping grinding layer, and every one deck friction layer and damping grinding layer all bond and be fixed on base cloth layer, and base cloth layer is provided with 20 layers altogether.Base cloth layer is selected basalt fiber cloth, and its thickness is 0.3 millimeter.
The thickness of friction layer is 1.2 millimeters, the thickness of damping grinding layer is 0.8 millimeter, wherein each component of damping grinding layer material therefor and the mass percent of each component are: nitrile butadiene rubber: 17%, phenolic resin: 8%, graphite: 14%, calcium carbonate 15%, barium sulphate 30%, aluminium oxide: 6%, zircon: 6%, chromite: 4%.Each component of friction layer material therefor and the mass percent of each component are: phenolic resin: 18%, and nitrile butadiene rubber: 4%, calcium carbonate: 20%, barium sulphate: 30%, graphite: 18%, aluminium oxide: 3%, molybdenum sulfide: 5%, copper fiber: 2%.
The base cloth layer of friction layer and its below bonding forms friction enhanced structure A jointly, the base cloth layer of damping grinding layer and its below bonding jointly forms damping and grinds reinforcement structure B, 1 layer of A and 1 layer of stacked formation friction material of B alternatively up and down, and all by bonding, fix between A and B.
The preparation method of the stratiform friction material of the high strength with low noise providing in the present embodiment is as follows:
(1) according to aforementioned proportion preparation friction layer material and damping grinding layer material, stir;
(2) by base cloth layer, be basalt fiber cloth dipping liquid phenolic resin, then in the one side of basalt fiber cloth, evenly smear friction layer material or damping grinding layer material, the thickness of friction layer applying material is 1.2 millimeters, and the thickness of damping grinding layer applying material is 0.8 millimeter;
(3) by facing up of being coated with friction layer material or damping grinding layer material on base cloth layer, wherein the base cloth layer of friction material and its below forms friction enhanced structure A jointly, damping abrasives and its below base cloth layer jointly form damping and grind reinforcement structure B, then by 1 layer of A and 1 layer of stacked laying of B alternatively up and down, base cloth layer is laminated with 20 layers, makes preforming material;
(4) by preforming material roll-in, cut;
(5), under the condition that is 11MPa at 160 ℃, ambient pressure, solidify and after 20 minutes, make the stratiform friction material of this high strength with low noise.
By GB5763-2008, the friction material making in the present embodiment is tested, wherein impact strength is 0.89J/cm
2, 200 ℃ of rates of thermal expansion are 0.8%, room temperature compressibility is 0.7%, 200 ℃ of compressibility 1.5%.Friction and wear behavior test result, in Table 3, does not produce noise in friction process, product has high strength, low noise and the overall merit such as high temperature resistant.
Table 3 friction and wear behavior test result
Claims (10)
1. the stratiform friction material of a high strength with low noise, it is characterized in that: at least comprise base cloth layer, friction layer and damping grinding layer, every one deck friction layer and damping grinding layer all bond and are fixed on base cloth layer, base cloth layer is at least provided with 4 layers, the thickness of described base cloth layer is not more than 0.5 millimeter, and the thickness of friction layer and damping grinding layer is 0.5～1.5 millimeter; Wherein the base cloth layer of friction layer and its below bonding forms friction enhanced structure A jointly, the base cloth layer of damping grinding layer and its below bonding jointly forms damping and grinds reinforcement structure B, 1～2 layer of A and 1～2 layer of stacked formation friction material of B alternatively up and down, and all by bonding, fix between A and B.
2. the stratiform friction material of high strength with low noise according to claim 1, is characterized in that: 1 layer of A and 1 layer of B alternatively up and down are stacked.
3. the stratiform friction material of high strength with low noise according to claim 1, it is characterized in that: each component of described friction layer material therefor and the mass percent of each component are: phenolic resin: 15～20%, nitrile butadiene rubber: 2～5%, calcium carbonate 15～30%, barium sulphate 15～30%, graphite 5～20%, aluminium oxide 2～4%, molybdenum sulfide 2～5%, copper fiber 1～3%.
4. the stratiform friction material of high strength with low noise according to claim 1, it is characterized in that: described each component of damping grinding layer material therefor and the mass percent of each component are: nitrile butadiene rubber: 15～20%, phenolic resin: 5～10%, graphite: 5～20%, calcium carbonate 15～30%, barium sulphate 15～30%, aluminium oxide: 5～8%, zircon: 2～8%, chromite: 2～8%.
5. the stratiform friction material of high strength with low noise according to claim 1, is characterized in that: described base cloth layer is basalt fiber cloth.
6. the stratiform friction material of high strength with low noise as described in claim 1, its preparation method is:
(1) preparation friction layer material and damping grinding layer material, stir;
(2) base cloth layer is flooded to liquid adhesive, then in the one side of base cloth layer, evenly smear friction layer material or damping grinding layer material, the thickness of smearing is 0.5～1.5 millimeter;
(3) by facing up of being coated with friction layer material or damping grinding layer material on base cloth layer, wherein the base cloth layer of friction material and its below forms friction enhanced structure A jointly, damping abrasives and its below base cloth layer jointly form damping and grind reinforcement structure B, then by 1～2 layer of A and 1～2 layer of stacked laying of B alternatively up and down, base cloth layer is at least laminated with 4 layers, makes preforming material;
(4) by preforming material roll-in, cut;
(5) after heat-pressure curing, make the stratiform friction material of this high strength with low noise.
7. the preparation method of the stratiform friction material of high strength with low noise according to claim 6, is characterized in that: 1 layer of A and 1 layer of stacked laying of B alternatively up and down in step (3).
8. the preparation method of the stratiform friction material of high strength with low noise according to claim 6, it is characterized in that: in step (1), each component of damping grinding layer material and the mass percent of each component of configuration are: nitrile butadiene rubber: 15～20%, phenolic resin: 5～10%, graphite: 5～20%, calcium carbonate 10～30%, barium sulphate 10～30%, aluminium oxide: 5～8%, zircon: 2～8%, chromite: 2～8%; Each component of friction layer material and the mass percent of each component are: phenolic resin: 15～20%, and nitrile butadiene rubber: 2～5%, calcium carbonate 15～30%, barium sulphate 15～30%, graphite 5～20%, aluminium oxide 2～4%, molybdenum sulfide 2～5%, copper fiber 1～3%.
9. the preparation method of the stratiform friction material of high strength with low noise according to claim 6, is characterized in that: in step (2), base cloth layer is selected basalt fiber cloth, and Bond is selected phenolic resin.
10. the preparation method of the stratiform friction material of high strength with low noise according to claim 6, is characterized in that: in step (5), heating-up temperature is 140～180 ℃, and ambient pressure is 10～20MPa, and be 5～25 minutes curing time.
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| CN103320091B (en) * | 2013-05-27 | 2014-05-28 | 湖北飞龙摩擦密封材料股份有限公司 | A friction product |
| CN112553890B (en) * | 2020-12-10 | 2022-12-16 | 深圳市美利登汽车零件有限公司 | Preparation method of impact-resistant automobile clutch facing |
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| US4501347A (en) * | 1982-09-15 | 1985-02-26 | Abex Corporation | Segmented disc brake pad |
| US4639392A (en) * | 1985-10-28 | 1987-01-27 | General Motors Corporation | Clutch plate member having layer of high durability, self-conforming friction facing |
| US5546880A (en) * | 1994-12-29 | 1996-08-20 | The Bf Goodrich Company | Annular filamentary structures and methods of making |
| US20020130010A1 (en) * | 2001-03-19 | 2002-09-19 | David Landa | Friction clutch plate |
| US20050064778A1 (en) * | 2003-09-19 | 2005-03-24 | Lam Robert C. | High coefficient friction material with symmetrical friction modifying particles |
| CN101429981A (en) * | 2008-12-15 | 2009-05-13 | 重庆红宇摩擦制品有限公司 | Brake shoe used for high-strength bi-component environmental-protecting car and method for producing the same |
| CN102146196B (en) * | 2011-01-27 | 2012-05-09 | 北京玻钢院复合材料有限公司 | Preparation method of high damping epoxy resin composite |
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