CN101463875A - Wet-type paper friction material and its friction plate - Google Patents
Wet-type paper friction material and its friction plate Download PDFInfo
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- CN101463875A CN101463875A CNA2008101869112A CN200810186911A CN101463875A CN 101463875 A CN101463875 A CN 101463875A CN A2008101869112 A CNA2008101869112 A CN A2008101869112A CN 200810186911 A CN200810186911 A CN 200810186911A CN 101463875 A CN101463875 A CN 101463875A
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Abstract
The invention provides a wet-type paper friction material and a friction plate thereof. The material comprises the following components by mass percentage: 15-40% of cotton fiber, 3-8% of carbon fiber, 5-10% of powdered carbon, 5-10% of diatomite, 5-10% of ferric oxide, 10-20% of synthetic fiber, 40-45% of phenolic resin and 5-20% of filling materials; the process steps of the friction plate is as follows: a paper-scroll is soaked, dried and cut for shaping; a steel strap is soaked, cleaned, surface-dried, surface-coated and dried; and then the paper-scroll and the steel strap are subjected to assembly, adhesive bonding, thickness adjustment, surface oil groove processing, checking and packaging. The invention adopts a novel wet-type paper friction material with high friction coefficient, excellent friction property, low ratio of static friction coefficient and dynamic friction coefficient, high heat resistance, high pressure resistance and high durability and a friction plate thereof to solve the problem that during speed change the friction plate made by the existing paper friction material can not realize smooth speed change or high durability and high heat difference resistance, and the invention has strong creativity and practicality, therefore, the market prospect is wide.
Description
Technical field
The present invention relates to a kind of Wet-type paper friction material and friction plate thereof, be used for the friction plate of the automatic transmission of automobile and industrial machine, belong to automobile and industrial machine field.
Background technique
Paper friction material and friction plate have been widely used in the automatic transmission of automobile and industrial machine, be used for making the friction plate parts of automatic transmission, but existing in a large number at the paper friction material of using and friction plate owing to pay attention to high static friction coefficient and durability, added a large amount of wear resistant fillers, for example, in the disclosed patented technology of Chinese patent publication number CN 1529068A, though improved the physical and mechanical properties of paper friction material by modifier, but a large amount of wear resistant fillers has reduced the interfibrous hole of paper friction material, cause friction plate lubricity variation, clutch easily is damaged, caused the coefficient of kinetic friction less simultaneously, friction plate can not reach lower quiet coefficient of kinetic friction ratio, thereby automatic transmission can not reach speed change smoothly.
Summary of the invention
The invention provides a kind of new Wet-type paper friction material and friction plate thereof, adopt high coefficient of friction and good frictional behavior, the low quiet coefficient of kinetic friction novel Wet-type paper friction material and the friction plate thereof than, high heat-resisting, high withstand voltage and durable coexistence, the friction plate that solves existing paper friction material manufacturing can not reach the problem of speed change and durable and heat-resisting difference very smoothly when speed change.
Technological scheme of the present invention is:
The mass percent of Wet-type paper friction material fundamental composition is: cotton fiber 15～40%, carbon fiber 3～8%, carbon dust 5～10%, silicious marl 5～10%, iron oxide 5～10%, artificial synthesis fiber 10～20%, phenolic resin 40～45%, packing material 5～20%.
Described phenolic resin is flexible 40% sex change phenolic resin.
Described artificial synthesis fiber is an aramid fiber, also can be the fine artificial synthesis fiber of polypropylene, and freeness is 300-400ml.
Packing material is short grained silicious marl and iron oxide, and the particle diameter of short grained silicious marl and iron oxide is 2-5 μ m.
Owing to adopted Wet-type paper friction material of the present invention and friction plate thereof, select the special denatured resin of better softness for use, thereby improve the friction factor of Wet-type paper friction material, improved the ductility of Wet-type paper friction material simultaneously, make friction plate and antithesis sheet in conjunction with the time surface of contact even, thereby reaching the heat that friction produces disperses as much as possible, change the mixing of synthetic fiber simultaneously, its freeness is 300-400ml, make interfibrous intensity improve, thereby improve the peeling strength of paper friction material, compared with prior art, technological process of the present invention is short and reasonable, process parameter and stable performance, mould structure is simple, makes installation and use easily, reliable operation, long service life has significantly improved the quality of friction plate, has improved the finished product rate and has reduced cost of production significantly, have very strong creativeness and practicability, thereby market prospects are boundless.
Description of drawings
Fig. 1: be the Wet-type paper friction material of the embodiment of the invention one and the plotted curve of the static friction coefficient changing value of friction plate under different pressures thereof;
Fig. 2: be the Wet-type paper friction material of the embodiment of the invention two and the plotted curve of the static friction coefficient changing value of friction plate under different pressures thereof;
Fig. 3: be the Wet-type paper friction material of the embodiment of the invention one and the plotted curve of the coefficient of kinetic friction changing value of friction plate under different pressures thereof;
Fig. 4: be the Wet-type paper friction material of the embodiment of the invention two and the plotted curve of the coefficient of kinetic friction changing value of friction plate under different pressures thereof;
Fig. 5: be the Wet-type paper friction material of the embodiment of the invention one and friction plate thereof the static friction coefficient under different pressures and the plotted curve of the changing value of the ratio of the coefficient of kinetic friction;
Fig. 6: be the Wet-type paper friction material of the embodiment of the invention two and friction plate thereof the static friction coefficient under different pressures and the plotted curve of the changing value of the ratio of the coefficient of kinetic friction;
Fig. 7: be the Wet-type paper friction material of the embodiment of the invention one and the plotted curve of the multistage energy test value of friction plate thereof;
Fig. 8: be the Wet-type paper friction material of the embodiment of the invention two and the plotted curve of the multistage energy test value of friction plate thereof;
Fig. 9: the energy value coordinate diagram of the energy value of example one and comparative example two compared with the prior art that is the embodiment of the invention one and embodiment two.
Among Fig. 1, Fig. 2: abscissa is the surface pressure value, and the Mpa of unit, y coordinate are coefficient of static friction values;
Among Fig. 3, Fig. 4: abscissa is the surface pressure value, and the Mpa of unit, y coordinate are coefficient of kinetic friction value;
Among Fig. 5, Fig. 6: abscissa is the surface pressure value, and the Mpa of unit, y coordinate are the ratio of the static friction coefficient and the coefficient of kinetic friction;
Among Fig. 7, Fig. 8: abscissa is an energy value, and unit K gm/cm 2sec, y coordinate are coefficient of kinetic friction value;
Among Fig. 9: 1, embodiment one energy value; 2, embodiment two energy value; 3, the energy value of comparative example one; 4, embodiment two energy value; Y coordinate is an energy value, unit K gm/cm 2sec.
Embodiment
Embodiment one
As Fig. 1, Fig. 3, Fig. 5, Fig. 7, shown in Figure 9.
Wet-type paper friction material and friction plate thereof, adopt cotton fiber, carbon fiber, carbon dust, silicious marl, artificial synthesis fiber and phenolic resin, the Wet-type paper friction material mass percent consists of: cotton fiber 20%, carbon fiber 3%, carbon dust 7%, silicious marl 5%, iron oxide 10%, the fine fiber 10% of polypropylene, phenolic resin 40%, filler 5%.
The friction plate manufacturing process steps is: paper roll earlier stage treatment process step is: paper roll → immersion → drying → punching and shaping; Steel disc earlier stage treatment process step is: steel disc → immersion → cleaning → dry tack free → surface coating → drying; Continuing follow-up process step after the two early stage, technology finished is: paper circle and steel disc make up → bonding → thickness adjustment → surperficial oil groove processing → inspection → packing.
Described phenolic resin is flexible 40% sex change phenolic resin.
Described artificial synthesis fiber is an aramid fiber, also can be the fine artificial synthesis fiber of polypropylene, and its two freeness all is 300-400ml.
Described packing material is short grained silicious marl and iron oxide, and the particle diameter of short grained silicious marl and iron oxide is 2-5 μ m.
Paper roll is soaked in flexibility 40% denatured resin that concentration is 35-40%.
The paper roll that has soaked flexible 40% denatured resin under 180 ℃ temperature dry 8-10 minutes carries out punching and shaping to paper roll then.
Steel disc is to soak 1 minute in 10% the hydrochloric acid in concentration, and dry tack free was then carried out 2 minutes with the clear water flushing in the surface under 110 ℃ temperature then, applies glue after the steel disc dry tack free, and drying is 1 minute under 80 ℃ of temperature.
Make up bonding with the steel disc that coats glue the paper roll of punching and shaping, the heating 1 minute under the pressure of 200 ℃ temperature and 3MPa of the two combination back, then on 100 tons the hotpress in 300 ℃ temperature heating 5-10 carry out the thickness adjustment second, carry out the processing of Friction Disk Surface oil groove then.
Embodiment two
As Fig. 2, Fig. 4, Fig. 6, Fig. 8, shown in Figure 9.
Wet-type paper friction material and friction plate thereof, adopt cotton fiber, carbon fiber, carbon dust, silicious marl, artificial synthesis fiber and phenolic resin, the Wet-type paper friction material mass percent consists of: cotton fiber 15%, carbon fiber 7%, carbon dust 3%, silicious marl 10%, iron oxide 10%, the fine fiber 5% of polypropylene, aramid fibre 5%, phenolic resin 40%, filler 5%.
The friction plate manufacturing process steps is: paper roll earlier stage treatment process step is: paper roll → immersion → drying → punching and shaping; Steel disc earlier stage treatment process step is: steel disc → immersion → cleaning → dry tack free → surface coating → drying; Continuing follow-up process step after the two early stage, technology finished is: paper circle and steel disc make up → bonding → thickness adjustment → surperficial oil groove processing → inspection → packing.
Described phenolic resin is flexible 40% sex change phenolic resin.
Described artificial synthesis fiber is the fine artificial synthesis fiber of aramid fiber or polypropylene, and its freeness is 300-400ml.
Described packing material is short grained silicious marl and iron oxide, and the particle diameter of short grained silicious marl and iron oxide is 2-5 μ m.
Paper roll is soaked in flexibility 40% denatured resin that concentration is 35-40%.
The paper roll that has soaked flexible 40% denatured resin under 180 ℃ temperature dry 8-10 minutes carries out punching and shaping to paper roll then.
Steel disc is to soak 1 minute in 10% the hydrochloric acid in concentration, and dry tack free was then carried out 2 minutes with the clear water flushing in the surface under 110 ℃ temperature then, applies glue after the steel disc dry tack free, and drying is 1 minute under 80 ℃ of temperature.
Make up bonding with the steel disc that coats glue the paper roll of punching and shaping, the heating 1 minute under the pressure of 200 ℃ temperature and 3MPa of the two combination back, then on 100 tons the hotpress in 300 ℃ temperature heating 5-10 carry out the thickness adjustment second, carry out the processing of Friction Disk Surface oil groove then.
Compare the prior art comparative example one and the comparative example two of test with embodiment one and embodiment two:
Comparative example one
Make sample 1, phenolic resin 37%, wood fiber 20%, bamboo fibre 10%, carbon fiber 17%, graphite 8%, silica 3%, silicious marl 3%, iron oxide 2% according to Chinese patent publication number CN 1529068A.
Comparative example two
Make sample 2, phenolic resin 35%, wood fiber 27%, bamboo fibre 10%, carbon fiber 15%, graphite 5%, silica 3%, silicious marl 2%, iron oxide 3% according to Chinese patent publication number CN 1529068A.
Embodiment one and embodiment's two test conditions and parameter:
Table one: frictional behavior test condition
| Testing machine | SAE#2 |
| Test is formed | PDPDPDP(P：Plate，D：Disc) |
| Inertia | 0.035kgf·m·s2 |
| Oil | ATF?T4 |
| Rotating speed | 3500rpm |
| Face is pressed | 0.37/0.77/1.0/1.5MPa |
| The oil temperature | 80℃ |
Table two: multistage energy test condition
Table three: frictional behavior test result
Table four: multistage energy test result
| Energy level | Embodiment one | Embodiment two | Comparative example one | Comparative example two | |
| 1step | 0.14472 | 0.1458 | 0.081 | 0.08 | |
| 2step | 0.14256 | 0.14364 | 0.083 | 0.081 | |
| 3step | 0.1458 | 0.14472 | 0.079 | 0.08 | |
| 4step | 0.14904 | 0.14796 | 0.079 | 0.079 | |
| 5step | 0.1458 | 0.1458 | 0.081 | 0.081 | |
| 6step | 0.14472 | 0.1458 | 0.08 | 0.08 | |
| 7step | 0.14256 | 0.14472 | 0.069 | 0.067 | |
| 8step | 0.14364 | 0.14364 |
From table three, the multistage energy test test result of table four, the static friction coefficient of embodiment and comparative example is basic identical, but embodiment's the coefficient of kinetic friction is significantly improved, thereby greatly reduces quiet coefficient of kinetic friction ratio, thereby has realized speed change smoothly.
From Fig. 1, Fig. 2, Fig. 3, Fig. 4 as can be seen, because silicious marl and iron oxide that embodiment one and embodiment two have used flexible 40% sex change phenolic resin and added particle diameter 2-5 μ m, improved area of contact, make static friction coefficient μ s that corresponding raising arranged, embodiment is when keeping the gentle aperture of original interfibrous porosity simultaneously, silicious marl and the iron oxide of particle diameter 2-5 μ m have been used, improved area of contact, make the coefficient of kinetic friction be improved, from Fig. 5, the quiet as can be seen coefficient of kinetic friction ratio of Fig. 6 has had tangible reduction, thereby the vibrations when speed change reduce, and realize speed change smoothly.
The present invention selects artificial synthesis fibers such as aramid fiber, polypropylene be fine, and its freeness is controlled at 300-400ml, makes that the intensity between the fiber is improved, thereby improves the peeling strength of paper substrate friction, and durability is improved.From Fig. 7, Fig. 8 as can be seen, embodiment one and embodiment's two material is more stable, high friction coefficient is arranged, good endurance.And the friction factor of comparative example one and comparative example two is low, and friction factor has had very big dwindling in the time of the 7th grade, thereby loses efficacy.
In order to improve the heat resistance of material, existing technology adopts the use amount that improves the high material of thermal conductivity usually, makes the thermal conductivity of material self be improved, and perhaps improves the porosity of material, conduct heat by oil, but this has often influenced frictional behaviour.The present invention has adopted flexible 40% sex change phenolic resin, makes material keep the area of contact of homogeneous when clutch, allows heat be disperseed as much as possible.As can be seen from Figure 9, embodiment one and embodiment's two material has the good heat endurance energy.
Claims (4)
1, a kind of Wet-type paper friction material and friction plate thereof, it is characterized in that: the mass percent of Wet-type paper friction material fundamental composition is: cotton fiber 15～40%, carbon fiber 3～8%, carbon dust 5～10%, silicious marl 5～10%, iron oxide 5～10%, artificial synthesis fiber 10～20%, phenolic resin 40～45%, packing material 5～20%.
2, Wet-type paper friction material according to claim 1 and friction plate thereof is characterized in that: described phenolic resin is flexible 40% sex change phenolic resin.
3, Wet-type paper friction material according to claim 1 and friction plate thereof is characterized in that: described artificial synthesis fiber is an aramid fiber, also can be the fine artificial synthesis fiber of polypropylene, and freeness is 300-400ml.
4, Wet-type paper friction material according to claim 1 and friction plate thereof is characterized in that: packing material is short grained silicious marl and iron oxide, and the particle diameter of short grained silicious marl and iron oxide is 2-5 μ m.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008101869112A CN101463875A (en) | 2008-12-05 | 2008-12-05 | Wet-type paper friction material and its friction plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008101869112A CN101463875A (en) | 2008-12-05 | 2008-12-05 | Wet-type paper friction material and its friction plate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103299100A (en) * | 2010-12-13 | 2013-09-11 | 舍弗勒技术股份两合公司 | Method for producing a friction body |
| CN104072943A (en) * | 2014-07-08 | 2014-10-01 | 南京农业大学 | Carbon powder reinforced resin based composite friction material and preparation method thereof |
| CN109073015A (en) * | 2016-05-18 | 2018-12-21 | 舍弗勒技术股份两合公司 | Wet friction material with friction modifier carrier |
-
2008
- 2008-12-05 CN CNA2008101869112A patent/CN101463875A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103299100A (en) * | 2010-12-13 | 2013-09-11 | 舍弗勒技术股份两合公司 | Method for producing a friction body |
| CN103299100B (en) * | 2010-12-13 | 2016-06-08 | 舍弗勒技术股份两合公司 | Method for producing a friction body |
| US9890817B2 (en) | 2010-12-13 | 2018-02-13 | Schaeffler Technologies AG & Co. KG | Method for producing a friction body |
| CN104072943A (en) * | 2014-07-08 | 2014-10-01 | 南京农业大学 | Carbon powder reinforced resin based composite friction material and preparation method thereof |
| CN104072943B (en) * | 2014-07-08 | 2017-01-18 | 南京农业大学 | Carbon powder reinforced resin based composite friction material and preparation method thereof |
| CN109073015A (en) * | 2016-05-18 | 2018-12-21 | 舍弗勒技术股份两合公司 | Wet friction material with friction modifier carrier |
| CN109073015B (en) * | 2016-05-18 | 2020-11-10 | 舍弗勒技术股份两合公司 | Wet friction material with friction modifier carrier |
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Open date: 20090624 |