CN104497974A - Safe friction material with low noise and preparation method of friction plate - Google Patents
Safe friction material with low noise and preparation method of friction plate Download PDFInfo
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- CN104497974A CN104497974A CN201410847958.4A CN201410847958A CN104497974A CN 104497974 A CN104497974 A CN 104497974A CN 201410847958 A CN201410847958 A CN 201410847958A CN 104497974 A CN104497974 A CN 104497974A
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Abstract
The invention aims at providing a friction material with high friction coefficient and safety performance and low noise and a preparation method of a friction plate. The friction material comprises the following components in percentage by weight: 4-10% of resin, 6-10% of coke powder, 0.5-5% of nitrile powder, 1-8% of tire powder, 1-4% of corundum, 9-20% of graphite, 1-3% of iron black, 4-5% of chromite powder, 1-3% of active carbon, 2-5% of friction powder, 20-30% of fiber and 30-55% of filler; and the preparation method of the friction plate prepared from the friction material comprises the following steps of (1) material blending, namely preparing a blended material of the friction material; (2) pre-pressing, namely pre-molding the blended material; (3) hot pressing, namely placing a pressed blank into a mould to carry out hot pressing, and then, carrying out exhaust gas disposal at intervals; (4) thermal treatment, namely heating from the room temperature to the temperature of 185 DEG C in stages at constant speed, and preserving the heat; and (5) size processing. The friction material is applied to the field of friction materials.
Description
Technical field
The present invention relates to a kind of friction materials, particularly relate to a kind of safety type friction materials of automobile brake disc low noise and the preparation method of friction plate.
Background technology
Along with the progress in epoch, the standard of living of people improves constantly, and pursues and to be had enough to eat and wear the pursuit brought up to material by initial being satisfied with, and then all improve a class to the Minimum requirements of all respects, the vehicles are upgraded to carriage on foot by original, now the automobile in Shi Man street.People are while discontented automobile causes " stifled city ", and also more and more pay close attention to the pollution that it brings, wherein noise pollution is exactly the environmental problem come out at the top.Part noise pollution be caused by the braking procedure of automobile, as friction materials manufacturer, obligated to reduction this kind of pollution fulfil social responsibility.
Realize the low noise braked, reduce the pollution of environment, improving the standard of living of people, is one of important directions realizing this target by the friction materials in stopper, and therefore developing low noise frottage material is the key that manufacturer fulfils obligations.From the composition of friction mechanism and friction materials, organism, proportioning between abrasive material and lubricant are the principal elements affecting noise performance, and the consumption and the collocation that strictly control organism, abrasive material and lubricant are the important research directions of improving noise performance.
In addition, by a large amount of data analyses, noise is not only relevant with friction materials frictional behaviour, simultaneously also relevant to the hardness of friction materials, the planeness of product etc.
Summary of the invention
Technical problem to be solved by this invention overcomes the deficiencies in the prior art, provide a kind of have great friction coefficient and safety performance while, take into account the friction materials of noise performance problem and apply this material and carry out method prepared by friction plate.
The technical scheme that the safety type friction materials of low noise of the present invention adopts is: in the present invention, by weight percentage, this material comprises following component: resin 4 ~ 10%, coke powder 6 ~ 10%, nitrile powder 0.5 ~ 5%, tyre talc 1 ~ 8%, corundum 1 ~ 4%, graphite 9 ~ 20%, iron black 1 ~ 3%, chromite powder 4 ~ 5%, gac 1 ~ 3%, Frication powder 2 ~ 5%, fiber 20 ~ 30%, filler 30 ~ 55%.
Further, by weight percentage, this material comprises following component: resin 10%, coke powder 6.8%, nitrile powder 0.5%, tyre talc 1.0%, corundum 1.5%, graphite 9.1%, iron black 2.5%, chromite powder 4.3%, gac 2.0%, Frication powder 2.3%, fiber 22.15%, filler 37.85%.
Further, by weight percentage, this material comprises following component: resin 8.0%, coke powder 6.8%, nitrile powder 1.0%, tyre talc 1.2%, corundum 1.5%, graphite 10.5%, iron black 2.5%, chromite powder 4.3%, gac 1.5%, Frication powder 2.3%, fiber 22.15%, filler 38.25%.
Further, by weight percentage, this material comprises following component: resin 4.7%, coke powder 6.8%, nitrile powder 1.7%, tyre talc 4.3%, corundum 1.7%, graphite 12.8%, iron black 1.7%, chromite powder 4.3%, gac 3.0%, Frication powder 4.3%, fiber 22.15%, filler 32.55%.
Further, described fiber is mixed by steel fiber and organic fibre, and by weight percentage, the content of described steel fiber is 21.3%, and the content of described organic fibre is 0.85%.
Further, by weight percentage, described filler comprises barite 28.0%, sodium aluminum fluoride 6.0%, calcium oxide 0.85%, sulfide 3.0%.
Further, by weight percentage, described filler comprises barite 28.4%, sodium aluminum fluoride 6.0%, calcium oxide 0.85%, sulfide 3.0%.
Further, described gac and described Frication powder add as filler a kind of composition wherein, and by weight percentage, described filler also comprises barite 22.98%, sodium aluminum fluoride 6.0%, calcium oxide 0.85%, sulfide 3.0%.
Further, described resin is resol or linear pattern resin, and described nitrile powder is nitrile rubber powder, sbr powder.
The technical scheme that the present invention's utilize above-mentioned friction materials to carry out method prepared by friction plate adopts is that this preparation method adopts dry process for forming, carries out according to the following steps:
(1) batch mixing: take all raw material by weight percentage, puts into high speed mixer all material, stirs 2 ~ 10 minutes, makes friction materials and puddle material;
(2) precompressed: puddle material and put into mould, normal temperature, pressing pressure 50 ± 2MPa, dwell time 5s, carry out premolding under the condition without the need to exhaust;
(3) hot pressing: pressed compact is put into mould, die temperature controls at 150 ± 5 DEG C, pressing pressure 30 ± 2MPa, and the heat-insulation pressure keeping time carries out hot pressing under the condition of 25s/mm; Hot pressing starts 8s exhaust, and later interval 5s, is vented 3s at every turn, is vented 3 ~ 5 times;
(4) thermal treatment: from room temperature ~ 140 DEG C, constant heatingrate 2h, insulation 1h; From 140 DEG C ~ 160 DEG C, constant heatingrate 1h, insulation 1h; From 160 DEG C ~ 185 DEG C, constant heatingrate 1h, insulation 3h;
(5) dimensioned: product takes out from mould, adopts special equipment for grinding, within ensureing friction plate planeness 0.2mm.
The invention has the beneficial effects as follows: the present invention is from the angle of noise, the organic materialss such as a certain proportion of rubber powder of suitable interpolation, tyre talc, Frication powder, make friction materials while ensureing certain physical strength, have lower hardness, thus the contact situation improved between friction materials and antithesis, and then improve noise performance; The present invention, by controlling the consumption of resin, gac, controls the hole situation of friction materials inside; By controlling the consumption of rubber powder, tyre talc and Frication powder, control the hardness of friction materials; By controlling materials and the kind of abrasive material and lubricant, ensure the security of friction materials; Compared with prior art, the consumption of organism, abrasive material and lubricant and collocation in strict control of material component, material is specially resin, coke powder, rubber powder, tyre talc, corundum, the consumption of graphite and collocation, reaches while meeting high frictional behaviour, meets the demand reducing noise.Through material development, performance test and service testing, the frictional coefficient of products obtained therefrom is high and stable, noise performance is excellent, interior shearing resistance is high, material proportion is little, hardness is moderate, cost is low, solve the contradiction between general friction materials great friction coefficient and noise performance, achieve the raising without asbestos and production efficiency of material simultaneously.
Embodiment
The invention provides a kind of have great friction coefficient and safety performance while, take into account the friction materials of noise performance problem and utilize this material to carry out the preparation method of friction plate making.The present invention is directed to domestic the deficiencies in the prior art, studied by factual survey, understand the generation of noise problem and the correlationship of friction materials, the consumption of organism and abrasive material and collocation in strict control of material component, material is specially resin, coke powder, rubber powder, tyre talc, corundum, the consumption of graphite and collocation, reach while having great friction coefficient, have excellent noise performance.Through material development, performance test and actual service testing, the frictional coefficient of products obtained therefrom is high and stable, wear rate is little, noise performance is excellent, interior shearing resistance is high, material proportion is little, hardness is moderate, cost is not high.Below, with specific embodiment, the present invention is further illustrated.
embodiment one:
Described friction materials is according to percentages, and it comprises following component: resin 10%, coke powder 6.8%, nitrile powder 0.5%, tyre talc 1.0%, corundum 1.5%, graphite 9.1%, and iron black 2.5%, chromite powder 4.3%, Frication powder 2.3%, fiber 22.15%, filler 39.85%.Described fiber is mixed by steel fiber and organic fibre, and by weight percentage, the content of described steel fiber is 21.3%, and the content of described organic fibre is 0.85%.Described filler comprises barite 30.0%, sodium aluminum fluoride 6.0%, calcium oxide 0.85%, sulfide 3.0%, adds up to content 39.85%.Described resin is resol or linear pattern resin, and described nitrile powder is nitrile rubber powder, sbr powder.
Take each starting material by above-mentioned part by weight, adopt dry method preforming process, undertaken by following five steps:
(1) batch mixing: take all raw material by weight percentage, puts into high speed mixer all material, stirs 4 minutes, makes friction materials and puddle material;
(2) precompressed: puddle material and put into mould, normal temperature, pressing pressure 50 ± 2MPa, dwell time 5s, carry out premolding under the condition without the need to exhaust;
(3) hot pressing: pressed compact is put into mould, die temperature controls at 150 ± 5 DEG C, pressing pressure 30 ± 2MPa, and the heat-insulation pressure keeping time carries out hot pressing under the condition of 25s/mm; Hot pressing starts 8s exhaust, and later interval 5s, is vented 3s at every turn, is vented 3 ~ 5 times;
(4) thermal treatment: from room temperature ~ 140 DEG C, constant heatingrate 2h, insulation 1h; From 140 DEG C ~ 160 DEG C, constant heatingrate 1h, insulation 1h; From 160 DEG C ~ 185 DEG C, constant heatingrate 1h, insulation 3h;
(5) dimensioned: product takes out from mould, adopts special equipment for grinding, within ensureing friction plate planeness 0.2mm.
embodiment two:
Described friction materials is according to percentages, and it comprises following component: resin 8.0%, coke powder 6.8%, nitrile powder 1.0%, tyre talc 1.2%, corundum 1.5%, graphite 10.5%, iron black 2.5%, chromite powder 4.3%, gac 1.5%, Frication powder 2.3%, fiber 22.15%, filler 38.25%.Described fiber is mixed by steel fiber and organic fibre, and by weight percentage, the content of described steel fiber is 21.3%, and the content of described organic fibre is 0.85%.Described filler comprises barite 28.4%, sodium aluminum fluoride 6.0%, calcium oxide 0.85%, sulfide 3.0%.
Various starting material are taken, with processing step preparation described in embodiment one by above-mentioned part by weight.
embodiment three:
Described friction materials is according to percentages, and it comprises following component: resin 4.7%, coke powder 6.8%, nitrile powder 1.7%, tyre talc 4.3%, corundum 1.7%, graphite 12.8%, iron black 1.7%, chromite powder 4.3%, gac 3.0%, Frication powder 4.3%, fiber 22.15%, filler 32.55%.Described fiber is mixed by steel fiber and organic fibre, and by weight percentage, the content of described steel fiber is 21.3%, and the content of described organic fibre is 0.85%.In the present embodiment, described gac and described Frication powder add as filler a kind of composition wherein, and by weight percentage, described filler also comprises barite 22.98%, sodium aluminum fluoride 6.0%, calcium oxide 0.85%, sulfide 3.0%.
Various starting material are taken, with processing step preparation described in embodiment one by above-mentioned part by weight.
To friction materials of the present invention with reference to the test method in GB5763-2008, carry out the test of hardness and voidage, test result is in table 1.
Table 1 hardness & porosity test result
For the frictional behaviour of friction materials, friction materials of the present invention is with reference to 4 classes---the disc brake liner in GB5763-2008, and the material compositions adopting the testing method of regulation in GB5763-2008 " brake spacer for automobile " contrast embodiment to provide and the friction materials of manufacturing process manufacture carry out frictional behaviour test.Frictional behaviour will ask for an interview to table 2, and test result is in table 3.
The requirement of table 2 GB5763-2008 frictional behaviour
Table 3 frictional behaviour test result
From frictional behaviour test result, along with temperature raises, there is slight decay in embodiment one, and the frictional coefficient of embodiment two and embodiment three is very steady, does not almost fail, and after temperature reduces, frictional coefficient is got back and recovered very well.
For the noise performance of friction materials, friction materials of the present invention is tested with reference to the standard of the SAE J2521 in SAE motor vehicle standard, and test result is in table 4.
Table 4 SAE J2521 noise performance test result
From the test result of SAE J2521, the test result of associative list 1, can find out the increase of the reduction along with friction materials hardness, porosity, the incidence of the noise of friction materials and the intensity of noise are obtained for obvious improvement, particularly shown in embodiment three.
By the service testing of reality, the noise incidence of the friction materials obtained by the present invention is much smaller than traditional friction materials, and probability is almost close to zero.
The present invention can be applicable to friction material field.
Claims (10)
1. a safety type friction materials for low noise, is characterized in that, by weight percentage, this material comprises following component: resin 4 ~ 10%, coke powder 6 ~ 10%, nitrile powder 0.5 ~ 5%, tyre talc 1 ~ 8%, corundum 1 ~ 4%, graphite 9 ~ 20%, iron black 1 ~ 3%, chromite powder 4 ~ 5%, gac 1 ~ 3%, Frication powder 2 ~ 5%, fiber 20 ~ 30%, filler 30 ~ 55%.
2. the safety type friction materials of a kind of low noise according to claim 1, is characterized in that, by weight percentage, this material comprises following component: resin 10%, coke powder 6.8%, nitrile powder 0.5%, tyre talc 1.0%, corundum 1.5%, graphite 9.1%, iron black 2.5%, chromite powder 4.3%, gac 2.0%, Frication powder 2.3%, fiber 22.15%, filler 37.85%.
3. the safety type friction materials of a kind of low noise according to claim 1, is characterized in that, by weight percentage, this material comprises following component: resin 8.0%, coke powder 6.8%, nitrile powder 1.0%, tyre talc 1.2%, corundum 1.5%, graphite 10.5%, iron black 2.5%, chromite powder 4.3%, gac 1.5%, Frication powder 2.3%, fiber 22.15%, filler 38.25%.
4. the safety type friction materials of a kind of low noise according to claim 1, is characterized in that, by weight percentage, this material comprises following component: resin 4.7%, coke powder 6.8%, nitrile powder 1.7%, tyre talc 4.3%, corundum 1.7%, graphite 12.8%, iron black 1.7%, chromite powder 4.3%, gac 3.0%, Frication powder 4.3%, fiber 22.15%, filler 32.55%.
5. the safety type friction materials of a kind of low noise according to any one of Claims 1-4, it is characterized in that: described fiber is mixed by steel fiber and organic fibre, by weight percentage, the content of described steel fiber is 21.3%, and the content of described organic fibre is 0.85%.
6. the safety type friction materials of a kind of low noise according to claim 2, is characterized in that, by weight percentage, described filler comprises barite 28.0%, sodium aluminum fluoride 6.0%, calcium oxide 0.85%, sulfide 3.0%.
7. the safety type friction materials of a kind of low noise according to claim 3, is characterized in that, by weight percentage, described filler comprises barite 28.4%, sodium aluminum fluoride 6.0%, calcium oxide 0.85%, sulfide 3.0%.
8. the safety type friction materials of a kind of low noise according to claim 4, it is characterized in that, described gac and described Frication powder add as filler a kind of composition wherein, by weight percentage, described filler also comprises barite 22.98%, sodium aluminum fluoride 6.0%, calcium oxide 0.85%, sulfide 3.0%.
9. the safety type friction materials of a kind of low noise according to any one of Claims 1-4, is characterized in that, described resin is resol or linear pattern resin, and described nitrile powder is nitrile rubber powder, sbr powder.
10. utilize the safety type friction materials of low noise as claimed in claim 1 to prepare a preparation method for friction plate, it is characterized in that, this preparation method adopts dry process for forming, carries out according to the following steps:
(1) batch mixing: take all raw material by weight percentage, puts into high speed mixer all material, stirs 2 ~ 10 minutes, makes friction materials and puddle material;
(2) precompressed: puddle material and put into mould, normal temperature, pressing pressure 50 ± 2MPa, dwell time 5s, carry out premolding under the condition without the need to exhaust;
(3) hot pressing: pressed compact is put into mould, die temperature controls at 150 ± 5 DEG C, pressing pressure 30 ± 2MPa, and the heat-insulation pressure keeping time carries out hot pressing under the condition of 25s/mm; Hot pressing starts 8s exhaust, and later interval 5s, is vented 3s at every turn, is vented 3 ~ 5 times;
(4) thermal treatment: from room temperature ~ 140 DEG C, constant heatingrate 2h, insulation 1h; From 140 DEG C ~ 160 DEG C, constant heatingrate 1h, insulation 1h; From 160 DEG C ~ 185 DEG C, constant heatingrate 1h, insulation 3h;
(5) dimensioned: product takes out from mould, adopts special equipment for grinding, within ensureing friction plate planeness 0.2mm.
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| CN201410847958.4A CN104497974A (en) | 2014-12-31 | 2014-12-31 | Safe friction material with low noise and preparation method of friction plate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105400493A (en) * | 2015-12-07 | 2016-03-16 | 珠海格莱利摩擦材料有限公司 | Safety type friction material having high cleaning performance and friction plate preparation method |
| CN109654144A (en) * | 2019-01-04 | 2019-04-19 | 上海华信摩擦材料有限公司 | A kind of automobile friction friction material and preparation method thereof |
| CN110081109A (en) * | 2019-04-28 | 2019-08-02 | 山东双连制动材料股份有限公司 | A kind of low-noise friction material and preparation method thereof |
| CN114151479A (en) * | 2021-11-22 | 2022-03-08 | 广州安科达汽车制动系统有限公司 | Magnetic rare earth friction material with friction coefficient and temperature changing in same direction and preparation method thereof |
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| CN102359522A (en) * | 2011-08-04 | 2012-02-22 | 重庆市璧山宏向汽配有限公司 | Brake friction plate and preparation method thereof |
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- 2014-12-31 CN CN201410847958.4A patent/CN104497974A/en active Pending
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| CN102359522A (en) * | 2011-08-04 | 2012-02-22 | 重庆市璧山宏向汽配有限公司 | Brake friction plate and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105400493A (en) * | 2015-12-07 | 2016-03-16 | 珠海格莱利摩擦材料有限公司 | Safety type friction material having high cleaning performance and friction plate preparation method |
| CN109654144A (en) * | 2019-01-04 | 2019-04-19 | 上海华信摩擦材料有限公司 | A kind of automobile friction friction material and preparation method thereof |
| CN110081109A (en) * | 2019-04-28 | 2019-08-02 | 山东双连制动材料股份有限公司 | A kind of low-noise friction material and preparation method thereof |
| CN114151479A (en) * | 2021-11-22 | 2022-03-08 | 广州安科达汽车制动系统有限公司 | Magnetic rare earth friction material with friction coefficient and temperature changing in same direction and preparation method thereof |
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Application publication date: 20150408 |