CN101978191A - Dry clutch lining and associated manufacturing process - Google Patents
Dry clutch lining and associated manufacturing process Download PDFInfo
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- CN101978191A CN101978191A CN2009801100659A CN200980110065A CN101978191A CN 101978191 A CN101978191 A CN 101978191A CN 2009801100659 A CN2009801100659 A CN 2009801100659A CN 200980110065 A CN200980110065 A CN 200980110065A CN 101978191 A CN101978191 A CN 101978191A
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- clutch
- equal
- coating
- radical polymerization
- prepolymer
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- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000000576 coating method Methods 0.000 claims abstract description 63
- 239000011248 coating agent Substances 0.000 claims abstract description 62
- 239000000945 filler Substances 0.000 claims abstract description 26
- 229920006305 unsaturated polyester Polymers 0.000 claims abstract description 25
- 239000002783 friction material Substances 0.000 claims abstract description 19
- 229920000642 polymer Polymers 0.000 claims abstract description 11
- 239000000470 constituent Substances 0.000 claims abstract description 6
- 238000010526 radical polymerization reaction Methods 0.000 claims description 25
- 125000000524 functional group Chemical group 0.000 claims description 23
- 239000000843 powder Substances 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 14
- 239000003082 abrasive agent Substances 0.000 claims description 13
- 238000010521 absorption reaction Methods 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 5
- 229920000728 polyester Polymers 0.000 claims description 5
- 229920001225 polyester resin Polymers 0.000 claims description 5
- 239000004645 polyester resin Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 230000004927 fusion Effects 0.000 claims description 4
- 230000009477 glass transition Effects 0.000 claims description 4
- 229920005749 polyurethane resin Polymers 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 2
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical group C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 claims description 2
- 229910006501 ZrSiO Inorganic materials 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
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- 239000009719 polyimide resin Substances 0.000 claims description 2
- 229920001567 vinyl ester resin Chemical group 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 abstract description 4
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- 239000004519 grease Substances 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 150000008065 acid anhydrides Chemical class 0.000 description 3
- 230000031709 bromination Effects 0.000 description 3
- 238000005893 bromination reaction Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000005660 chlorination reaction Methods 0.000 description 3
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- 239000012634 fragment Substances 0.000 description 3
- 230000035807 sensation Effects 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 2
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000013068 control sample Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000000113 differential scanning calorimetry Methods 0.000 description 2
- 150000002334 glycols Chemical class 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 150000003022 phthalic acids Chemical class 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 238000006068 polycondensation reaction Methods 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- KUCOHFSKRZZVRO-UHFFFAOYSA-N terephthalaldehyde Chemical compound O=CC1=CC=C(C=O)C=C1 KUCOHFSKRZZVRO-UHFFFAOYSA-N 0.000 description 2
- BJELTSYBAHKXRW-UHFFFAOYSA-N 2,4,6-triallyloxy-1,3,5-triazine Chemical compound C=CCOC1=NC(OCC=C)=NC(OCC=C)=N1 BJELTSYBAHKXRW-UHFFFAOYSA-N 0.000 description 1
- WZHHYIOUKQNLQM-UHFFFAOYSA-N 3,4,5,6-tetrachlorophthalic acid Chemical compound OC(=O)C1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1C(O)=O WZHHYIOUKQNLQM-UHFFFAOYSA-N 0.000 description 1
- WEHZNZTWKUYVIY-UHFFFAOYSA-N 3-oxabicyclo[3.2.2]nona-1(7),5,8-triene-2,4-dione Chemical compound O=C1OC(=O)C2=CC=C1C=C2 WEHZNZTWKUYVIY-UHFFFAOYSA-N 0.000 description 1
- 239000004923 Acrylic lacquer Substances 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000004641 Diallyl-phthalate Substances 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QUDWYFHPNIMBFC-UHFFFAOYSA-N bis(prop-2-enyl) benzene-1,2-dicarboxylate Chemical compound C=CCOC(=O)C1=CC=CC=C1C(=O)OCC=C QUDWYFHPNIMBFC-UHFFFAOYSA-N 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
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- 230000006866 deterioration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000009881 electrostatic interaction Effects 0.000 description 1
- 238000007590 electrostatic spraying Methods 0.000 description 1
- 150000002148 esters Chemical group 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002186 photoactivation Effects 0.000 description 1
- 229910052615 phyllosilicate Inorganic materials 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical compound C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 150000003504 terephthalic acids Chemical class 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/025—Compositions based on an organic binder
- F16D69/026—Compositions based on an organic binder containing fibres
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Paints Or Removers (AREA)
Abstract
Dry clutch lining comprising a layer of friction material based on fibres mixed with at least one organic component and at least one constituent capable of being electrostatically charged, and of which at least one face is covered with a coating constituted of the following components, expressed in percentages by weight: polymer obtained by radical, especially photo-initiated, polymerization of prepolymers comprising reactive functions constituted of unsaturated polyesters: from 90 to 100%; - abrasive fillers: less than or equal to 1%; - lamellar fillers: less than or equal to 10%; - inert fillers: less than or equal to 10%.
Description
Technical field
Target of the present invention is dry clutch lining and relative manufacturing process.
Background technique
Transmission coupling mechanism in the kinematic chain that " dry clutch " should be understood to move in air (organe de couplage de transmission) for example is used for equipment motor vehicle.
Usually, dry clutch comprises at least one reaction plate and at least one pressing plate, and wherein each of these plates and engine shaft are rotationally connected directly or indirectly, for example pass through flywheel.
Between these plates, arrange the dish that is rotationally connected with gear-box axle in known manner, be called clutch disk, at its fixing dry clutch lining on one side at least.This will be used for rubbing with at least one of above-mentioned plate, guaranteeing the continuity of this kinematic chain, and when wishing the coupling that motor and speed changer take place the torque of motor be transmitted the speed changer case.
In a manner known way, the dry clutch lining comprises friction material layer usually, and this friction material layer is based on the fiber that mixes with at least a organic constituent.They are generally annular.They can be on will the face opposite with the face of reaction plate or pressing plate contact be covered by the layer of other component, for example etch resistant layer, dust layer, enhancement layer.
Transmission of movement between two friction means and the coefficientoffriction between this two parts have direct relation.This friction factor height depends on each surface condition of these parts.Usually, wish to obtain preferably high and, with controlled motion linkwork accurately as far as possible along with stable friction factor of time.
Yet notice that the expected value of the friction factor that common dry clutch lining obtains only after the running-in wear on the surface of the face that will contact with pressing plate or reaction plate, promptly after clutches engaged has quite repeatedly taken place, just can reach.As an example, can mention conventional lining, wherein observe friction factor, and after the engagement more than 100 times of clutch, reach stationary value along with each engagement slightly raises.Only just reach gratifying friction level for the transmission of torque at this moment.
In the problem that the clutch that is equipped with conventional lining runs into, can notice that the risk of sliding takes place friction material, for example work as clutch by the corrosion of oil membrane protection with the restriction cast iron plate; Be also noted that in the clutch that is installed in the new Motor Vehicle that the risk of deterioration takes place the layer of deposition, because they stand harsh startup usually, particularly when they are used for the multilayer car transporter, and in some cases even observe the burning of lining.
In order to overcome these shortcomings, have been proposed on the face of the friction material layer that will contact with reaction plate or pressing plate and be coated with coating.
For example, document DE 100 02 261 A1 have proposed the coating based on the acrylate that comprises abrasive material, and described abrasive material for example is the pottery of quartz, silica gel, silicate, oxide form.
Found that such coating makes friction factor to improve very apace, and after about 10 to 50 times engagement, reached and compare bigger value with the value that same material obtained that does not have coating.
Although this coating is advantageously from the angle of stability and friction co-efficient value, it has shortcoming.
In fact, notice, comprise the clutch in the clutch that---will be coated with in this way with the face that reaction plate or pressing plate contact in this clutch---causes undesirable " vibration "." vibration " should be understood to produce and makes the driver feel very uncomfortable vibration.Vibration ascribes the adhesion between lining and the plate usually to.Finish the running-in period that this defective remains to lining usually always, and this can and be equivalent to clutches engaged 5000 to 10000 times than length.
Summary of the invention
The purpose of this invention is to provide the dry clutch lining, this lining does not have above-mentioned shortcoming, and makes friction factor to raise fast, avoids vibration simultaneously.
This purpose is by realizing on the supporting disk of intending being fixed to dry clutch and with the reaction plate of described clutch or the dry clutch lining of pressing plate friction, wherein said lining comprises friction material layer, this friction material layer based on at least a organic constituent and at least a fiber that mixes of component that can static electrification, and the coating that the following component represented with mass percent of the face that contacts with reaction plate or pressing plate of plan is formed covers:
The polymer that-radical polymerization, the particularly light-initiated radical polymerization of prepolymer by comprising the reactive functional groups that unsaturated polyester constitutes obtains: 90 to 100%;
-abrasive material: be less than or equal to 1%;
-layered fillers: be less than or equal to 10%;
-inert filler: be less than or equal to 10%.
In fact, the inventor observes, and such lining causes the friction factor of rising fast, and the clutch that is equipped with does not by this way produce vibration.In addition, the value of the friction factor of acquisition does not have the value of the lining acquisition of such coating greater than use.
Within the scope of the present invention, following understanding should be done in following term:
-the component of static electrification " can " refers to any component that conduction maybe can keep electric charge.As an example, mention metal component (for example fiber or powder type), carbon filler, some has a polymer of dipole.
-" unsaturated polyester " refers to the polyester that comprises unsaturated bond, and described unsaturated bond for example is the two keys of C or the form of olefinic bonds for example.
-" abrasive material " refers to the filler of the contact surface that can denude plate; It is the hard material filler, compares with the coating of the same composition that does not contain them, and they cause the raising of friction factor.
-" layered fillers " refers to the filler that its component structure is made of the plane, the power of the key of the power of the chemical bond between its midplane in these planes; Such filler can promote to slide, and if their volume ratios in material less than 3%, friction factor is had medium influence, even a very little influence.According to a kind of embodiment of the present invention, represent that with the mass percent of coating the amount of layered fillers is less than or equal to 5%, even be less than or equal to 2%.
-" inert filler " refers to and is different from above filler, and it does not influence friction factor, and to the not effect of sliding.According to a kind of embodiment of the present invention, represent that with the mass percent of coating the amount of inert filler is less than or equal to 5%, even be less than or equal to 2%.
According to the present invention, " filler " is the material of powder type, and its average-size is for example between 1 and 50 μ m, for example greater than 5 μ m and/or less than 30 μ m.
Make the performance that can obtain needs according to the components selection of coating of the present invention, and notice, with according to the coating of DE 100 02 261 A1 different be that this coating comprises abrasive material seldom, does not even contain abrasive material.
It can comprise layered fillers and/or more a spot of inert filler of moderate.
" prepolymer that comprises the reactive functional groups of unsaturated polyester formation " is noncrosslinking, the normally linear polyester resin that comprises two keys of C=C and ester functional group simultaneously.They are the polycondensation acquisition by at least a unsaturated acid anhydride or diacid (for example maleic anhydride), second kind of diacid or acid anhydrides (M-phthalic acid, phthalic acid, terephthalic acid, tetrachlorophthalic acid) and at least a glycol and/or diepoxide usually.The polycondensation of these monomers is carried out under the condition that the feasible two keys of introducing by unsaturated acid anhydride or acid of C=C can be kept.These pairs key can participate in Raolical polymerizable then, randomly carries out in the presence of one or more comonomers.Example as such comonomer, can enumerate vinyl monomer for example vinyl benzene, vinyltoluene or vinyl acetate, acrylic monomer is for example diallyl phthalate or triallyl cyanurate of methyl methacrylate or many unsaturated monomers for example.This Raolical polymerizable causes forming key between the unsaturated polyester chain, promptly has cross-linked structure.
The polymer that radical polymerization by above-mentioned prepolymer obtains thereby be crosslinked polyester resin.
Certainly, in polymerization process, can form except the key the key that forms between the unsaturated polyester chain.According to a kind of embodiment, the prepolymer that comprises the reactive functional groups beyond the reactive functional groups that unsaturated polyester constitutes can mix with the prepolymer that comprises the reactive functional groups that unsaturated polyester constitutes, with the polymer of the radical polymerization acquisition that forms the prepolymer by comprising the reactive functional groups that unsaturated polyester constitutes.For example, the prepolymer that comprises the acrylic reactive functional groups can mix with the prepolymer of the reactive functional groups that comprises the unsaturated polyester formation, and the part of polymerisation can be carried out between these two kinds of prepolymers.Yet, should be noted that polymerisation mainly is the result of the key that forms between the unsaturated polyester chain, thereby, according to the present invention, form the polymer that the radical polymerization of the prepolymer by comprising the reactive functional groups that unsaturated polyester constitutes obtains.
Although the initiation of the radical polymerization of contained two keys can be undertaken by any radical initiator well known by persons skilled in the art in the unsaturated polyester, but preferably this initator is selected from the photoactivation initator, and the radical polymerization of unsaturated prepolymer in other words is preferably light-initiated radical polymerization.
Such crosslinked polyester resin is well known by persons skilled in the art.For example, can enumerate the glycols resin (containing resin) of phthalic resin (containing unit), isophthalic resin (containing unit), terephthaldehyde's acid resin (containing unit), polymethyl methacrylate resin (crosslinked in the presence of methyl methacrylate), tetrachlorophthalic tetrachlorophthalic anhydrid resin (containing resin) and chlorination or bromination derived from the unit of tetrachlorophthalic tetrachlorophthalic anhydrid derived from terephthalic anhydride or acid derived from phthalic anhydride or acid derived from phthalic anhydride or acid derived from the unit of chlorination or bromination glycol.
Can also comprise feature optional below one or more according to lining of the present invention, these features are paid attention to individually or with all possible combination:
-the prepolymer that comprises the reactive functional groups that unsaturated polyester constitutes is selected from following component either alone or in combination: phthalic resin; Isophthalic resin; Polymethyl methacrylate resin; Terephthaldehyde's acid resin; The tetrachlorophthalic tetrachlorophthalic anhydrid resin; Chlorination or bromination glycols resin;
-the prepolymer of light-initiated radical polymerization polymer that obtains and the reactive functional groups that does not contain the unsaturated polyester formation of prepolymer by comprising the reactive functional groups that unsaturated polyester constitutes combines, the described prepolymer that does not contain the reactive functional groups that unsaturated polyester constitutes is selected from for example following component either alone or in combination: polyurethane resin particularly has the polyurethane resin of vinyl ether functional group and/or vinyl esters functional group; Polyester resin, particularly polyester acrylate; Epoxy resin; Polyimide resin;
-this coating has 60 ℃ to 100 ℃ glass transition temperature T
g, for example more than or equal to 70 ℃, even for example more than or equal to 75 ℃, and/or for example be less than or equal to 85 ℃;
-this coating has infrared absorption band, the absorption maximum of this absorption band on the one hand 1700 to 1800cm
-1Between, on the other hand 700 to 750cm
-1Between;
-abrasive material is selected from following compounds: Al either alone or in combination
2O
3SiO
2SiC; BaSO
4ZrSiO
4CeO
2Ferriferous oxide; The existence of abrasive material has the effect of the higher frictional force of the coating of giving;
-layered fillers is selected from following compounds either alone or in combination: graphite; Phyllosilicate (comprising talcum); MoS
2
-inert filler is selected from following compounds either alone or in combination: organic and/or inorganic pigment, for example TiO
2Zeolite; Active carbon;
The thickness of-coating for example more than or equal to 20 μ m, and/or for example is less than or equal to 60 μ m between 10 μ m to 100 μ m.
The present invention also aims to comprise the dry clutch of reaction plate and pressing plate, it comprises, and at least one is aforesaid according to dry clutch lining of the present invention.
The invention still further relates to the manufacture method of dry clutch lining, intend in this clutch being fixed on the supporting disk of dry clutch and with the reaction plate or the pressing plate friction of described clutch, it comprises the following step:
1) provide friction material layer, this friction material layer based on at least a organic constituent and at least a fiber that mixes of component that can static electrification, described friction material layer comprises the face that plan contacts with reaction plate or pressing plate and is annular for example;
The mixture of the following component of 2) will described at least representing in order to mass percent is coated with:
The polymer that-radical polymerization, the particularly light-initiated radical polymerization of prepolymer by comprising the reactive functional groups that unsaturated polyester constitutes obtains: 90 to 100%;
-abrasive material: be less than or equal to 1%;
-layered fillers: be less than or equal to 10%;
-inert filler: be less than or equal to 10%.
Certainly, term that uses in the scope in clutch according to the present invention and example are applicable to term and the example about above method.
According to a kind of embodiment of described method, step 2) comprise following substep with mixture coating:
2a) provide the dry powder that comprises described component,
2b) with described electrostatic powder spraying to face to be coated at least,
2c) the radical polymerization of prepolymer preferably by light-initiated radical polymerization, is particularly passed through Ultraviolet radiation.
Advantageously, radical polymerization step 2c) can be undertaken by the fusion step of prepolymer, particularly obtain fusion by infrared heating.
According to a kind of embodiment of the inventive method, step 2a) powder have median diameter between 20 to the 50 μ m.
Observe, can be coated with above-mentioned coating according to a plurality of of lining of the present invention even whole faces.This advantageously obtains dustproof coating.
Embodiment
Below by non-limiting example the present invention is illustrated.
With the form of powder of median diameter with 20 to 50 μ m provide two kinds of compositions according to component mixture of the present invention.
Below, will be called " forming 1 " according to the mixture of first kind of composition, will be called " forming 2 " according to the mixture of second kind of composition.
First kind of composition " formed 1 " and comprised polyester acrylate and polyurethane.
Second kind of composition " formed 2 " and comprised polyester acrylate.
On these electrostatic powder sprayings were in the clutch that does not have coating, described lining was that the trade mark of ValeoMat é riaux de Friction is that F820 DS and trade mark are the product of F830 DS.
Notice, can use electrostatic gun or frictional electricity spray gun to carry out electrostatic spraying.By the pressurized air from container powder particle is transported to spray gun, they are by with the friction of suitable material or by the static electrification with the contacting of electrode with " corona " discharge, described electrode moves under about voltage of 10 to 100kV at this.
The particle of Pen Sheing is attached on the substrate by electrostatic interaction by this way.
Then described powder coated face is passed through infrared radiation heating, so that described powder melts.
Make the powder polymerization by ultraviolet ray then.
According to the instruction of DE 100 02 261 A1, use the sample of the acrylic lacquer contain abrasive material (be called " LACRY ", be deposited in the clutch that does not have coating on the F820DS and F830DS) preparation corresponding to the comparative example.
To there be in the clutch of coating F820DS and F830DS as the comparative example yet.
The embodiment that following connection with figures provides is corresponding in the clutch of producing according to following table 1.
Table 1
The embodiment who is designated as " EX " is corresponding to according to embodiments of the invention.
The embodiment who is designated as " EC " is corresponding to the comparative example.
Accompanying drawing 1 to 8 has illustrated the variation according to the multiple parameter of embodiments of the invention and comparative example's measurement.The curve of representing with identical figure notation is corresponding to identical curve.
Fig. 1 to 3 has illustrated by measuring infrared (IR) spectrum that the coating fragment that extracts from the surface of the liner sample of above production obtains.
The IR spectrum 10 that Fig. 1 obtains corresponding to the coating with " forming 1 " type according to sample of the present invention.
The IR spectrum 20 that Fig. 2 obtains corresponding to the coating with " forming 2 " type according to sample of the present invention.
Fig. 3 is corresponding to the IR spectrum 30 of the comparative example's of the coating acquisition of " LACRY " type of using sample.
Notice that spectrum 10 and 20 has very big similarity, particularly the absorption maximum of their each self-contained IR absorption bands on the one hand 1700 to 1800cm
-1Between, particularly 1710 to 1720cm
-1About, on the other hand 700 to 750cm
-1Between, especially at 725cm
-1About.
Also notice absorption maximum 820 to 880cm
-1Between and 1010 to 1050cm
-1Between the existence of IR absorption band.
IR spectrum 30 is different from preceding two spectrum very significantly, and especially do not have absorption maximum 700 to 750cm
-1Between the IR absorption band.
Do not wish to interrelate with any scientific theory, about the light-initiated radical polymerization of the prepolymer by comprising the reactive functional groups that unsaturated polyester constitutes obtain according to coating of the present invention, can think that key band is as follows:
1700 to 1800cm
-1Between: the unsaturated carbonyl group;
700 to 750cm
-1Between, 725cm particularly
-1About :-(CH
2)
n-chain, wherein n 〉=4.
In addition, notice that the IR spectrum of polymerization powder before and the IR spectrum according to coating of the present invention that uses these powder to obtain are approaching after light-initiated radical polymerization.
Coating has the glass transition temperature T between 60 ℃ to 100 ℃ according to an embodiment of the invention
g
By the analysis to measure glass transition temperature that the differential scanning calorimetry (" DSC ", Differential ScanningCalorimetry) of using the coating fragment is carried out, described coating fragment is taken from the sample surfaces according to lining of the present invention.
Record following result:
-for the coating of using " forming 1 " to obtain: T
g=78 ℃
-for the coating of using " forming 2 " to obtain: T
g=64 ℃
Use scanning electron microscope (SEM) to observe, be deposited on coating on the friction material with sign.
The Free Surface of the coating of the sample that obtains with " LACRY " is smooth, and the interface between coating and the friction material is flat basically.
Free Surface according to the present invention with the coating of the sample of " form 1 " and " forming 2 " acquisition is coarse, and the interface between these coatings and the friction material is irregular, and notices in the hole of these coating penetrations on the friction material surface.
The Figure 4 and 5 explanation is according to the change procedure of lining of the present invention and comparative example's friction factor.
The condition of measuring friction is corresponding to the simulation to the startup in the running in stage process in the clutch.Coefficientoffriction is measured according to counting N mesh cycle.Lining is new when N=0.Mesh with the low-yield of about 15kJ and under about 60 ℃ low temperature.On the surface of the relative material that lining will rub, deposit grease.Use grease to protect the material of the plate that forms relative material at present with corrosion protection.In an illustrated embodiment, on relative material, apply about 1mg/cm
2Grease.
The existence of grease causes being called the not desired effects of " slip ", and wherein friction factor is low, and usually less than 0.2, this can not carry out the good transmission of torque.
Fig. 4 shown for sample according to the present invention, i.e. the EX2 of the EX1 of curve 14 and curve 15, and for the control sample EC1 of curve 44, the change procedure of friction factor under these conditions.As can be seen, do not have the sample EC144 of coating in the engagement more than 100 times, to show low friction factor, and make according to sample EX1 14 of the present invention and EX215 and can after 10 times engagement at the most, reach friction factor greater than 0.25.Observe, adopt 50 μ m 30 μ m's reach friction factor more than or equal to 0.30 sooner and advantageously according to coating of the present invention (EX1,14) than adopting according to coating of the present invention (EX2,15).By coating according to the present invention, obtain gratifying and metastable friction factor apace.
The same thickness that Fig. 5 explanation is formed for difference according to sample of the present invention, i.e. the EX3 of the EX1 of curve 14 and curve 24, and for the control sample EC1 of curve 44, the change procedure of friction factor under these conditions.
Observe, also being made by the coating that obtains " forming 2 " can limit slippage, and can obtain the friction factor greater than 0.20 fast.
Fig. 6 to 8 relates to the vibration of carrying out and measures on vehicle.Provide from 4 to 8 " comfort level score " through the operator about the training of the sign of clutch judder on the vehicle, wherein 8 corresponding to as snug as a bug in a rug sensation, 4 sensations corresponding to the comfort level of difference.For given lining, on flat road, test to simulate normal startup, on road, test to simulate harsh starting condition simultaneously with 12% inclination.(1000rpm, 1200rpm for example at a slow speed) repeatedly meshes with different engine modes.Also with from low to the different torques of peak torque by the time mesh, peak torque is near the wheel slip limit.On first retaining, second retaining and reverse gear shift, mesh.Thereby the operator can provide the comfort level score, the feasible tendency that can discern clutch judder.The measurement result of vibration represents from 0 to 100% with the distribution form of the score that provides under different test conditions.
Fig. 6 shown for lining according to the present invention, i.e. the EX1 of figure 16 compares with the comparative example EC1 of the lining F820DS that does not have coating of figure 46, and the vibration of carrying out is measured.For this test, the roughness of relative material is serious, Ra from 4 to 6 μ m.Notice that for EC1, about 10% situation comfort level is considered to non-constant (must be divided into 4), about 10% situation is medium (must be divided into 6), is good or very good (must be divided into 7 or 8) under remaining situation.For lining according to the present invention, do not exist comfort level to be classified to the situation of non-constant.
Fig. 7 shown for lining according to the present invention, i.e. the EX1 of figure 17 compares with the comparative example EC1 of the lining F820DS that does not have coating of figure 47, and the vibration of carrying out is measured.For this test, the roughness of relative material is low, and Ra is less than 1 μ m.Also notice, compare, be improved according to the comfort level of lining EX1 of the present invention with the lining F820DS EC1 that does not have coating.Surpassing under 80% the situation, adopting comfort level according to lining EX1 of the present invention to be considered to or very good.
The EX4 that it is figure 18 that Fig. 8 has shown for lining according to the present invention, the lining EC2 with " LACRY " type coating of figure 38, and the lining EC3 that does not have coating of figure 48, the vibration of carrying out is measured.For these tests, the roughness of relative material is low, and Ra is less than 1 μ m.Notice that the lining F830DS that does not have a coating i.e. 48 EC3 produces medium vibration behavior under these conditions, the behavior promptly significantly improves under the situation of 18 EX4 at the lining that uses the coating according to the present invention.On the contrary, find that the existence of " LACRY " type coating reduces comfort level very significantly, and the sensation comfort level is poor under about 10% situation.
With different based on the coating of " LACRY " type component, can obtain anti-sliding stop and stable friction factor fast according to coating of the present invention is feasible, avoided flutter phenomenon simultaneously.
Therefore, comprise in the clutch according to coating of the present invention and be particularly suitable for satisfying effective and comfortable clutch designing requirement.
The invention is not restricted to embodiment, and should make an explanation, comprise the embodiment of any equivalence in nonrestrictive mode.
Claims (11)
1. dry clutch lining, intend in this clutch being fixed on the supporting disk of dry clutch and with the reaction plate or the pressing plate friction of described clutch, wherein said lining comprises friction material layer, this friction material layer based on at least a organic constituent and at least a fiber that mixes of component that can static electrification, and plan is covered by the coating with the face that reaction plate or pressing plate contact, it is characterized in that, represent that this coating is made of following component with mass percent:
The polymer that-the radical polymerization of prepolymer by comprising the reactive functional groups that unsaturated polyester constitutes obtains: 90 to 100%;
-abrasive material: be less than or equal to 1%;
-layered fillers: be less than or equal to 10%;
-inert filler: be less than or equal to 10%.
2. in the clutch according to a last claim, it is characterized in that the radical polymerization that comprises the prepolymer of the reactive functional groups that unsaturated polyester constitutes is light-initiated radical polymerization.
3. according in one of any clutch of above claim, it is characterized in that, the prepolymer of the radical polymerization polymer that obtains and the reactive functional groups that does not contain the unsaturated polyester formation of the prepolymer by comprising the reactive functional groups that unsaturated polyester constitutes combines, the described prepolymer that does not contain the reactive functional groups that unsaturated polyester constitutes for example is selected from following component either alone or in combination: polyurethane resin particularly has the polyurethane resin of vinyl ether functional group and/or vinyl esters functional group; Polyester resin, particularly polyester acrylate; Epoxy resin; Polyimide resin.
4. according in one of any clutch of above claim, it is characterized in that this coating has 60 ℃ to 100 ℃ glass transition temperature T
g, for example more than or equal to 70 ℃, even for example more than or equal to 75 ℃, and/or for example be less than or equal to 85 ℃.
5. according in one of any clutch of above claim, it is characterized in that this coating has infrared absorption band, the absorption maximum of this absorption band on the one hand 1700 to 1800cm
-1Between, on the other hand 700 to 750cm
-1Between.
6. according in one of any clutch of above claim, it is characterized in that this abrasive material is selected from following compounds: Al either alone or in combination
2O
3SiO
2SiC; BaSO
4ZrSiO
4CeO
2Ferriferous oxide.
7. according in one of any clutch of above claim, it is characterized in that the thickness of this coating for example more than or equal to 20 μ m, and/or for example is less than or equal to 60 μ m between 10 μ m to 100 μ m.
8. the manufacture method of dry clutch lining, intend in this clutch being fixed on the supporting disk of dry clutch and with the reaction plate or the pressing plate friction of described clutch, it is characterized in that this method comprises the following step:
1) provide friction material layer, this friction material layer based on at least a organic constituent and at least a fiber that mixes of component that can static electrification, described friction material layer comprises the face that plan contacts with reaction plate or pressing plate and is annular for example;
The mixture of the following component of 2) will described at least representing in order to mass percent is coated with:
The polymer that-radical polymerization, the particularly light-initiated radical polymerization of prepolymer by comprising the reactive functional groups that unsaturated polyester constitutes obtains: 90 to 100%;
-abrasive material: be less than or equal to 1%;
-layered fillers: be less than or equal to 10%;
-inert filler: be less than or equal to 10%.
9. according to the manufacture method in the clutch of a last claim, it is characterized in that step 2) comprise following substep with mixture coating:
2a) provide the dry powder that comprises described component,
2b) with described electrostatic powder spraying to face to be coated at least,
2c) the radical polymerization of prepolymer, Ultraviolet radiation is particularly passed through in the radical polymerization that preferred light causes.
10. according to the method for a last claim, it is characterized in that radical polymerization step 2c) undertaken by the fusion step of prepolymer, particularly obtain fusion by infrared heating.
11., it is characterized in that step 2a according to claim 9 or 10 one of any methods) powder have median diameter between 20 to the 50 μ m.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0854332A FR2933159B1 (en) | 2008-06-27 | 2008-06-27 | DRY CLUTCH TRIM - PROCESS FOR MANUFACTURING THE SAME |
| FR0854332 | 2008-06-27 | ||
| PCT/FR2009/051234 WO2009156700A2 (en) | 2008-06-27 | 2009-06-26 | Dry clutch lining and associated manufacturing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101978191A true CN101978191A (en) | 2011-02-16 |
| CN101978191B CN101978191B (en) | 2014-09-03 |
Family
ID=40340570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980110065.9A Active CN101978191B (en) | 2008-06-27 | 2009-06-26 | Dry clutch liner and related manufacturing method |
Country Status (8)
| Country | Link |
|---|---|
| KR (1) | KR101601998B1 (en) |
| CN (1) | CN101978191B (en) |
| BR (1) | BRPI0910242A2 (en) |
| DE (1) | DE112009001546B4 (en) |
| FR (1) | FR2933159B1 (en) |
| MX (1) | MX2010014011A (en) |
| SK (1) | SK288491B6 (en) |
| WO (1) | WO2009156700A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105745463A (en) * | 2013-11-19 | 2016-07-06 | 舍弗勒技术股份两合公司 | Piston-cylinder assembly for a disconnecting unit, in particular for a master cylinder of a hydraulic clutch actuating device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3019767B1 (en) | 2014-04-11 | 2016-12-23 | Valeo Materiaux De Friction | PROCESS FOR PERFECTIONALLY TREATING A SURFACE OF A FRICTION ELEMENT |
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|---|---|---|---|---|
| DE10002261A1 (en) * | 1999-01-26 | 2000-07-27 | Luk Lamellen & Kupplungsbau | Friction coupling or brake, especially for a vehicle, comprises at least one friction layer which has a surface coating |
| CN1639481A (en) * | 2002-03-05 | 2005-07-13 | 瓦莱奥摩擦材料公司 | Method for making a ring-shaped friction facing whereof the friction material comprises fibers, injection mould for implementing same, and resulting friction facing |
| CN101046233A (en) * | 2006-03-31 | 2007-10-03 | 曙制动器工业株式会社 | Brake member and bonding method |
| CN101101029A (en) * | 2006-07-08 | 2008-01-09 | Zf腓特烈港股份公司 | Method of manufacturing a clutch disc for a clutch and a clutch disc |
| EP1908982A1 (en) * | 2006-10-04 | 2008-04-09 | Valeo Matériaux de Friction | Overcuring of brake lining |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5531021U (en) * | 1978-08-19 | 1980-02-28 | ||
| JPS59200826A (en) * | 1983-04-28 | 1984-11-14 | Aisin Chem Co Ltd | Friction material |
| FR2679971B1 (en) | 1991-08-01 | 1997-09-05 | Valeo | DRY FRICTION CLUTCH LINING WITHOUT ASBESTOS. |
| JP2000219750A (en) * | 1999-02-02 | 2000-08-08 | Akebono Brake Ind Co Ltd | Friction material for brake |
| JP2007045860A (en) | 2005-08-05 | 2007-02-22 | Dainatsukusu:Kk | Method for producing wet friction material |
| FR2891333B1 (en) | 2005-09-29 | 2009-12-11 | Valeo Materiaux De Friction | CLUTCH TRIM WITH IMPROVED FRICTION COEFFICIENT |
-
2008
- 2008-06-27 FR FR0854332A patent/FR2933159B1/en active Active
-
2009
- 2009-06-26 SK SK128-2010A patent/SK288491B6/en not_active IP Right Cessation
- 2009-06-26 BR BRPI0910242A patent/BRPI0910242A2/en not_active Application Discontinuation
- 2009-06-26 KR KR1020107029183A patent/KR101601998B1/en active Active
- 2009-06-26 DE DE112009001546.8T patent/DE112009001546B4/en active Active
- 2009-06-26 CN CN200980110065.9A patent/CN101978191B/en active Active
- 2009-06-26 WO PCT/FR2009/051234 patent/WO2009156700A2/en not_active Ceased
- 2009-06-26 MX MX2010014011A patent/MX2010014011A/en active IP Right Grant
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10002261A1 (en) * | 1999-01-26 | 2000-07-27 | Luk Lamellen & Kupplungsbau | Friction coupling or brake, especially for a vehicle, comprises at least one friction layer which has a surface coating |
| CN1639481A (en) * | 2002-03-05 | 2005-07-13 | 瓦莱奥摩擦材料公司 | Method for making a ring-shaped friction facing whereof the friction material comprises fibers, injection mould for implementing same, and resulting friction facing |
| CN101046233A (en) * | 2006-03-31 | 2007-10-03 | 曙制动器工业株式会社 | Brake member and bonding method |
| CN101101029A (en) * | 2006-07-08 | 2008-01-09 | Zf腓特烈港股份公司 | Method of manufacturing a clutch disc for a clutch and a clutch disc |
| EP1908982A1 (en) * | 2006-10-04 | 2008-04-09 | Valeo Matériaux de Friction | Overcuring of brake lining |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105745463A (en) * | 2013-11-19 | 2016-07-06 | 舍弗勒技术股份两合公司 | Piston-cylinder assembly for a disconnecting unit, in particular for a master cylinder of a hydraulic clutch actuating device |
| CN105745463B (en) * | 2013-11-19 | 2017-12-15 | 舍弗勒技术股份两合公司 | Piston-cylinder assembly for a disconnecting unit, especially for a master cylinder of a hydraulic clutch actuating device |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2933159B1 (en) | 2010-09-10 |
| DE112009001546B4 (en) | 2021-08-05 |
| KR101601998B1 (en) | 2016-03-09 |
| MX2010014011A (en) | 2011-02-15 |
| CN101978191B (en) | 2014-09-03 |
| SK1282010A3 (en) | 2011-02-04 |
| FR2933159A1 (en) | 2010-01-01 |
| DE112009001546T5 (en) | 2011-05-05 |
| WO2009156700A2 (en) | 2009-12-30 |
| BRPI0910242A2 (en) | 2015-09-29 |
| WO2009156700A3 (en) | 2010-02-18 |
| SK288491B6 (en) | 2017-09-04 |
| KR20110028465A (en) | 2011-03-18 |
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