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WO2003004899A2 - Procede de fabrication de garnitures de friction a liant inorganique - Google Patents

Procede de fabrication de garnitures de friction a liant inorganique Download PDF

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Publication number
WO2003004899A2
WO2003004899A2 PCT/DE2002/002469 DE0202469W WO03004899A2 WO 2003004899 A2 WO2003004899 A2 WO 2003004899A2 DE 0202469 W DE0202469 W DE 0202469W WO 03004899 A2 WO03004899 A2 WO 03004899A2
Authority
WO
WIPO (PCT)
Prior art keywords
friction lining
inorganic
binder
weight
raw materials
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/DE2002/002469
Other languages
German (de)
English (en)
Other versions
WO2003004899A3 (fr
Inventor
Rolf Gondrum
Richard J. Lewis
Harald Merz
Peter-Josef Stepprath
Burkhard Voss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trocellen GmbH
TMD Friction EsCo GmbH
Original Assignee
Trocellen GmbH
TMD Friction EsCo GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Trocellen GmbH, TMD Friction EsCo GmbH filed Critical Trocellen GmbH
Priority to AU2002325149A priority Critical patent/AU2002325149A1/en
Publication of WO2003004899A2 publication Critical patent/WO2003004899A2/fr
Publication of WO2003004899A3 publication Critical patent/WO2003004899A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
    • 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
    • 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
    • F16D69/027—Compositions based on metals or inorganic oxides
    • F16D69/028—Compositions based on metals or inorganic oxides containing fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
    • B29C2043/185—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/52—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/16—Frictional elements, e.g. brake or clutch linings

Definitions

  • Temperature-resistant friction linings can be produced with polysiloxanes used as preceramic binders.
  • polysiloxanes used as preceramic binders.
  • the use seems to be limited to special applications
  • EP 0 469 464 B1 describes the use of aluminum silicates as an inorganic binder for friction linings.
  • the disclosed inorganic binder matrix could be used to produce friction linings in the casting, extruding or pressing process, but in practice the disclosed molding compositions are suitable. due to their consistency not for a pressing process.
  • the friction linings produced in the casting process have the disadvantage that relatively large amounts of water have to be removed from the product slowly and with high energy expenditure. Attempts to speed up the manufacturing process easily lead to the formation of cracks and bubbles.
  • a disc brake lining usually consists of a friction mass layer, a carrier mass layer and a lining carrier plate.
  • the backing mass should ensure a tension balance between the friction mass layer and the backing plate.
  • the carrier mass usually contains thermosetting resins as binders in order to achieve the necessary mechanical strength, inorganic fillers for thermal insulation, metal powder as "sacrificial anodes” for corrosion protection and sometimes also rubber to contribute to noise reduction (see EP 0 443 093) ,
  • the invention solves this problem by a method according to claim 1, preferably in connection with one or more features of the subclaims.
  • a binder consisting of an inorganic, stone-forming reactive component and a water-containing second component, which causes a hardening reaction of the stone-forming component in the alkaline range, is used as the inorganic binder, the inorganic binder having a pasty to flowable consistency and one Water content from 15 to 42% by weight.
  • the inorganic binder is used in an amount of 15 up to 35 wt .-%, based on the total amount of the friction lining used.
  • V undissolved, amorphous Si0 2 in particular from an amorphous, disperse powdery, dehydrated or water-containing silica or from high temperature processes (silica fume),
  • Vtl clay thermally treated at a temperature between 450 ° C and 950 ° C.
  • reactive solids are, for example, from EP 0 100 848 B, EP 0 148 280 B, DE 32 46 602 A, DE 32 46 619 C, DE 32 46 621 C, DE 33 03 409 C, EP 0 199 941 B, DE 35 12 516 C, EP 0 254 165 B, EP 0 374 195 B, EP 0 417 582 B, EP 0 417 583 B, DE 40 25 212 C, EP 0 561 978 B, EP 0 599 895 B and WO 93 21 126 A known.
  • the reactive solids mentioned react with slight self-heating with alkali silicate solutions as hardeners.
  • the reaction that takes place is also referred to as geopolymerization and the molded bodies formed in the process are referred to as geopolymers.
  • an alkali silicate solution (water glass solution) with 1.2 to 2.5 mol Si0 2 per mol K 2 0 and / or Na 2 0 is known as the hardener which effects a hardening reaction of the stone-forming component in the alkaline range.
  • an additional organic-based binder is added in a proportion of 10 to 20% by weight, based on the total batch.
  • the following friction lining raw materials are used as main components in the process according to the invention, which can be divided into different groups with regard to function and chemical properties: metals and alloys, organic or inorganic fillers, fibers, lubricants.
  • Metals are present in the mixture as fine wire sections, chips or powder. They are mainly used to reduce wear and increase strength.
  • fillers for a large number of organic or mineral raw materials in friction lining mixtures is misleading. Most of the so-called “fillers” are by no means inert, but instead contribute to a stabilization of the coefficient of friction through tribochemical reactions.
  • Organic and inorganic fibers partly serve as process aids in the production of friction linings, but also contribute significantly to the mechanical strength of the friction linings.
  • lubricants are used in friction linings. These help stabilize the course of the coefficient of friction and reduce wear. Graphite, phosphates, metal oxides and sulfides have proven themselves as solid lubricants. Since most lubricants are only optimally effective over a small temperature range, lubricant mixtures are generally used.
  • a friction lining mixture can be composed as follows, for example: Friction lining raw material: proportion (% by weight) ⁇
  • the processing conditions and the sequence in the production of the friction linings according to the invention are of essential importance for the present invention: First, at least the major part of the friction lining raw materials, i. H. more than 50% by weight and preferably more than 80% by weight, intimately mixed with one another. If an organic binder is used, it is mixed together with the friction lining raw materials in this phase. As a rule, the friction lining raw materials heat up to a temperature between 45 and 80 ° C during this mixing process.
  • the friction lining raw material mixture is cooled to a temperature ⁇ 40 ° C, since otherwise a spontaneous reaction of the inorganic binder occurs, which produces a targeted friction lining would make impossible.
  • the inorganic, paste-like to flowable binder based on an inorganic, stone-forming reactive component and a hardener, which causes the hardening reaction of the stone-forming component in the alkaline range, is added to the cooled friction lining raw material mixture with constant stirring and mixed with it at least largely homogeneously, without the temperature rising to such an extent that the hardening reaction of the inorganic binder begins. Possibly.
  • This mixing process must be carried out in a cooled mixer and in a correspondingly gentle manner, ie without high energy dissipation. It is very preferred that the mixture of friction lining raw materials and binders has a slightly moist, but pourable to free-flowing, but not flowable or pasty consistency after this process step.
  • the mixture of friction lining raw materials and binders is then pressed at a pressure of at least 10 MPa, preferably between 20 and 150 MPa and particularly preferably between 30 and 50 MPa, and a temperature between 60 and 100 ° C. to the desired friction lining.
  • the water content of the total batch in this pressing process is between 3 and 10% by weight. If the water content is less than 3%, complete hardening of the inorganic binder can no longer be guaranteed, while a water content of more than 10% by weight no longer enables homogeneous compression.
  • the friction lining or the friction lining composite has several layers, in particular in addition to the actual friction lining, a carrier mass and / or a carrier plate, the water content of 3 to 10% by weight always relates to the inorganically bound friction lining - shift.
  • the mixture of friction lining raw materials and binders has a very long pot life before pressing, which, depending on the reactive components or hardener composition used and in particular depending on the water content of the overall mixture, takes at least several hours, but generally several days to to several months can be without the strength of the later pressed friction lining would suffer significantly.
  • the finished friction lining comprises a carrier plate which is preferably made of metal, an intermediate layer made of a carrier layer, the so-called underlayer, and the actual friction lining according to this invention with an inorganic binder.
  • the backing mass should ensure tension equalization between the friction mass layer and the backing plate.
  • the carrier mass contains thermosetting resins as binders to achieve the necessary mechanical strength, inorganic fillers for thermal insulation, metal powder as "sacrificial anodes" for corrosion protection and possibly also rubber to contribute to noise reduction.
  • a standard metal carrier is preferably first provided with a heat-activated phenolic resin adhesive.
  • this adhesive-coated carrier plate is pressed against the mold by means of a counterholder.
  • the mold is filled with the free-flowing friction lining mixture according to the invention and a layer of an underlayer known per se to the person skilled in the art.
  • This underlayer layer consists of powder or granular friction lining raw material with a thermosetting phenolic resin binder.
  • the pressing is preferably carried out at a pressure of 30 to 50 MPa, a temperature of 60 to 100 ° C and with a pressing time of 5 to 100 seconds.
  • FIG. 1 shows the shape of the friction lining with carrier plate.
  • FIG. 2 shows the structure of a friction lining with carrier plate
  • a flowable binder mixture is first produced in a suitable mixing unit.
  • the solid mixture consists of 50% by weight of metakaolin with an average grain size of 4 ⁇ m and 50% by weight of reactive oxide mixture, namely finely divided, partially amorphous aluminosilicate with contents of amorphous silicon dioxide and aluminum oxide, obtained as furnace filter dust in the case of a average grain size of 5 ⁇ m.
  • This mixture used as a stone-forming reactive component, is available from Trocellen GmbH under the trade name TROLIT® Solid, type RB01.
  • An alkaline water glass solution trade name TROLIT® Hardener E61060 from Trocellen GmbH, consisting of 51% by weight of water, 26% by weight of SiO 2 , 9% by weight of Na 2 0 and 14% by weight of K is used as the hardener 2 0, used.
  • the water content of the inorganic binder is 36% by weight.
  • the freshly prepared binder mixture is added to the running mixer and carefully mixed to a free-flowing mass at below 40 ° C.
  • the proportion of the binder mixture in the total batch was 20% by weight.
  • the free-flowing friction lining mixture thus obtained can be stored at room temperature in closed containers for several days to weeks until processing.
  • the brake pads are manufactured in heated press tools with hydraulic presses (Fig. 1).
  • the free-flowing friction lining mixture according to the invention is first poured into the mold.
  • the carrier mass made of powder or granular raw material for the friction lining is poured onto this loose bed of the friction material with a thermosetting phenolic resin binder.
  • the carrier plate with a heat-activated phenolic resin adhesive is placed on top.
  • the compression of the friction material takes place with a pressure of 40 MPa, a temperature of 80 ° C and with a pressing time of 20 sec.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Braking Arrangements (AREA)

Abstract

Les procédés de fabrication de garnitures de friction avec utilisation de matières brutes usuelles de garnitures et d'un liant inorganique ont abouti jusqu'à présent à des garnitures non dépourvues de fissures ou de soufflures. L'invention a pour objet un procédé de fabrication d'une garniture de friction, caractérisé en ce qu'on utilise I) une proportion de matières brutes pour garniture de friction de 65 à 85 % en poids d'ajout total, II) un liant organique de consistance pâteuse à fluide, renfermant au moins, en majeure partie, un composant réactif inorganique pierreux et, comme durcisseur, un second composant aqueux provoquant une réaction de durcissement du composant pierreux dans le domaine alcalin, en ce que le liant anorganique présente une teneur en eau de 15 à 42 % en poids, la proportion de liant anorganique par rapport à l'ajout total étant de 15 à 35 % en poids, III) éventuellement, un liant supplémentaire à base organique dans une proportion de 0 à 10 % en poids, et en ce qu'on mélange intimement, tout d'abord, la majeure partie des matières brutes, éventuellement avec addition du liant supplémentaire, en ce qu'on refroidit le mélange de matières brutes à une température < 40 °C, en ce qu'on ajoute le liant anorganique, pâteux à fluide, sous agitation constante, au mélange de matières brutes refroidies et on mélange ces produits, on compresse le mélange de matières brutes et de liants sous une pression de plus de 10 Mpa et à une température comprise entre 60 et 100 °C de manière à former une garniture de friction, la teneur en eau de l'ajout total lors de la compression étant de 3 à 10 % en poids, et en ce que le liant inorganique est durci lors de la compression ou lors d'une phase de recuit subséquente. Le procédé selon l'invention est utilisé pour la fabrication de garnitures de friction, notamment de garnitures de frein.
PCT/DE2002/002469 2001-07-05 2002-07-05 Procede de fabrication de garnitures de friction a liant inorganique Ceased WO2003004899A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002325149A AU2002325149A1 (en) 2001-07-05 2002-07-05 Method for producing inorganically bound friction linings

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10132659.9 2001-07-05
DE2001132659 DE10132659A1 (de) 2001-07-05 2001-07-05 Verfahren zur Herstellung anorganisch gebundener Reibbeläge

Publications (2)

Publication Number Publication Date
WO2003004899A2 true WO2003004899A2 (fr) 2003-01-16
WO2003004899A3 WO2003004899A3 (fr) 2003-04-10

Family

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Family Applications (1)

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PCT/DE2002/002469 Ceased WO2003004899A2 (fr) 2001-07-05 2002-07-05 Procede de fabrication de garnitures de friction a liant inorganique

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Country Link
AU (1) AU2002325149A1 (fr)
DE (1) DE10132659A1 (fr)
WO (1) WO2003004899A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102031088A (zh) * 2010-12-09 2011-04-27 南京航空航天大学 无机-有机复合摩擦材料及其制备方法
CN110259859A (zh) * 2019-06-03 2019-09-20 山西中聚晶科半导体有限公司 一种利用蓝宝石制备的刹车片及其制备方法
IT202000001012A1 (it) * 2020-01-20 2021-07-20 Itt Italia Srl Metodo per preparare un materiale di frizione in particolare per preparare pastiglie freni e relative pastiglie freni
IT202300000714A1 (it) 2023-01-19 2024-07-19 Raicam Ind S R L Legante solido inorganico per un materiale di attrito e materiale di attrito per freni

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
DE10319426A1 (de) * 2003-04-29 2004-11-25 Mowka, Reinhard, Dipl.-Ing.-Chem. Reibbelagmischung für Brems- und Kupplungsbeläge

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DE3225552C2 (de) * 1982-07-08 1985-02-14 Oexle, Friedrich, 7000 Stuttgart Gleit- oder Bremsbelag
US4792361A (en) * 1986-08-08 1988-12-20 Cemcom Corp. Cementitious composite friction compositions
CA2024478C (fr) * 1989-09-01 1997-05-20 Mitsuhiko Nakagawa Materiau de frottement et methode de fabrication dudit materiau
DE4024547A1 (de) * 1990-08-02 1992-02-06 Miba Frictec Gmbh Reibbelag und verfahren zu dessen herstellung
US5433774A (en) * 1990-08-02 1995-07-18 Miba Frictec Gesellschaft M.B.H. Friction lining and process for the production thereof
DE4135389A1 (de) * 1991-10-26 1993-04-29 Ruetgers Pagid Ag Astbestfreies reibmaterial fuer eisenbahn-bremsbelaege
DE4420593A1 (de) * 1993-06-18 1994-12-22 Luk Lamellen & Kupplungsbau Reibbelag
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US5576358A (en) * 1995-02-03 1996-11-19 Alliedsignal Inc. Composition for use in friction materials and articles formed therefrom
DE19623938A1 (de) * 1996-04-25 1997-10-30 Textar Gmbh Verfahren zur Herstellung einer Reibbelagmischung für Brems- und Kupplungsbeläge
DE19817611B4 (de) * 1998-04-21 2005-04-21 Schott Ag Reibbelag für Drehmomentübertragungseinrichtungen

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102031088A (zh) * 2010-12-09 2011-04-27 南京航空航天大学 无机-有机复合摩擦材料及其制备方法
CN102031088B (zh) * 2010-12-09 2013-03-13 南京航空航天大学 无机-有机复合摩擦材料及其制备方法
CN110259859A (zh) * 2019-06-03 2019-09-20 山西中聚晶科半导体有限公司 一种利用蓝宝石制备的刹车片及其制备方法
IT202000001012A1 (it) * 2020-01-20 2021-07-20 Itt Italia Srl Metodo per preparare un materiale di frizione in particolare per preparare pastiglie freni e relative pastiglie freni
WO2021148959A1 (fr) * 2020-01-20 2021-07-29 Itt Italia S.R.L. Procédé de fabrication d'un matériau de friction, en particulier pour la fabrication de plaquettes de frein, et plaquettes de frein correspondantes
EP4093988B1 (fr) 2020-01-20 2024-02-28 ITT Italia S.r.l. Procédé de fabrication d'un matériau de friction, en particulier pour la fabrication de plaquettes de frein, et plaquettes de frein correspondantes
IT202300000714A1 (it) 2023-01-19 2024-07-19 Raicam Ind S R L Legante solido inorganico per un materiale di attrito e materiale di attrito per freni
WO2024154065A1 (fr) 2023-01-19 2024-07-25 Raicam Industrie S.R.L. Matériau de friction pour freins contenant un liant inorganique solide

Also Published As

Publication number Publication date
AU2002325149A1 (en) 2003-01-21
WO2003004899A3 (fr) 2003-04-10
DE10132659A1 (de) 2003-01-23

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