EP2203580A1 - Procédé de fabrication de fibres courtes à hautes performances présentant des fibrilles, fibres courtes à hautes performances présentant des fibrilles et objet qui les contient - Google Patents

Procédé de fabrication de fibres courtes à hautes performances présentant des fibrilles, fibres courtes à hautes performances présentant des fibrilles et objet qui les contient

Info

Publication number
EP2203580A1
EP2203580A1 EP08805163A EP08805163A EP2203580A1 EP 2203580 A1 EP2203580 A1 EP 2203580A1 EP 08805163 A EP08805163 A EP 08805163A EP 08805163 A EP08805163 A EP 08805163A EP 2203580 A1 EP2203580 A1 EP 2203580A1
Authority
EP
European Patent Office
Prior art keywords
fibrils
performance
short fibers
article
fibers
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.)
Withdrawn
Application number
EP08805163A
Other languages
German (de)
English (en)
Inventor
Michael Schmitt
Gerald Ortlepp
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.)
Teijin Aramid GmbH
Original Assignee
Teijin Aramid 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 Teijin Aramid GmbH filed Critical Teijin Aramid GmbH
Priority to EP08805163A priority Critical patent/EP2203580A1/fr
Publication of EP2203580A1 publication Critical patent/EP2203580A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J3/00—Modifying the surface
    • D02J3/02—Modifying the surface by abrading, scraping, scuffing, cutting, or nicking
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G1/00—Severing continuous filaments or long fibres, e.g. stapling
    • D01G1/02—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form
    • D01G1/04—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form by cutting
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0405—With preparatory or simultaneous ancillary treatment of work

Definitions

  • the present invention relates to a process for the production of high performance short fibers having fibrils, high performance short fibers containing fibrils and articles containing the same.
  • High performance fibers i. High tensile strength fibers having a high tensile modulus, e.g. Aramid, polyolefin, polybenzooxazole or polybenzothiazole fibers are known to be used as reinforcing fibers in a variety of articles, e.g. in friction linings. Particularly when high-performance fibers are used as reinforcing fibers in friction linings, high-performance fibers require a high filler retention capacity.
  • high performance pulp fibers e.g. of aramid pulp whose kaolin-measured filler retention is about 80%.
  • US 2003/0022961 A1 describes a friction material which i.a. contains a mixture consisting of a dry aramid pulp having at least one member selected from the group consisting of a wet aramid pulp, a wood pulp and an acrylic pulp.
  • aramid fibers are provided, cut to a length of 13 mm, ground and sieved. Milling is done by shearing the short fibers between a rotating and a fixed shearing device, so that the short fibers are not only verpuls by milling but cut several times, whereby the trunk length of virtually all resulting pulp fibers is shorter than the cut length of the short fibers before grinding.
  • the present invention has the object to provide a method that is less labor and energy consuming, is also suitable for continuous operation and still provides a usable as reinforcing fibers product that can be further processed into articles whose quality in comparison at least not inferior to the quality of articles produced in the same way but with pulp.
  • This object is achieved by a method for producing fibril-comprising high-performance short fibers comprising the steps of a) providing a high-performance organic filament yarn with a
  • the comparison of the process according to the invention with the pulping process described above shows that the process according to the invention comprises a smaller number of steps, which are simple to carry out. Furthermore, the inventive method is much less energy consuming. This is the case in particular because the steps of the refining process, which may need to be carried out several times, and which are required in the initially described entangling process, are dispensed with. Therefore, the inventive method is significantly cheaper than the Verpulpungsvon described above. Furthermore, the method according to the invention is suitable for continuous operation.
  • the inventive method provides high performance fibril short fibers of substantially the same length, which can be used to produce articles in a manner known per se, which articles which have been produced in the same way but using the corresponding pulp are not only equal in quality, at least in terms of abrasion but even superior.
  • a brake pad can be produced which surprisingly shows both on the pad and on the disc an abrasion which is less than the abrasion of one after the same Standard formulation prepared brake pad containing instead of the resulting from the inventive method high performance short fibers of substantially the same length aramid pulp.
  • This result is even less so foreseeable when the high performance short fibers of substantially the same length resulting from the process of the present invention exhibit a kaolin-measured filler retention which ranges from about 10% to about 40%, which is higher than aramid short fibers (US Pat. about 4%) but drastically lower than the filler retention of aramid pulp (about 80%).
  • the term “fibrillating” means that the organic high-performance filament yarn provided in step a) of the method according to the invention is guided over a friction surface such that preferably a longitudinal friction results.
  • the term “fibrils” means fibers which branch off from the filaments of the high-performance filament yarn and have a diameter which is only a fraction, for example only half to one twentieth of the diameter of a filament, preferably only one third to one tenth the diameter of a filament, since, as previously mentioned, the high performance filament yarn is passed over a friction surface so as to preferably result in longitudinal friction and longitudinal friction over the entire length of the high performance filament yarn, the fibrils of the high performance filament yarn having the resulting fibrils in step b) may be of the order of the length of the high performance filament yarn lies.
  • step c) of the method of the present invention correspondingly shortens the length of the fibrils resulting in fibril-containing high-performance short fibers of substantially the same length from which fibrils branch, and also resulting in fibrils detached from the high-performance short fibers of substantially of equal length.
  • the fibrillation of the high-performance filament yarn in step b) of the process according to the invention takes place in the dry state of the yarn.
  • all organic filament yarns having a tensile strength of at least 10 g / dtex and a tensile modulus of at least 150 g / dtex are suitable.
  • high-performance filament yarn means a yarn having the above-mentioned properties, wherein the filaments of the yarn are preferably circular in cross-section perpendicular to their length, however, yarns having a different cross-sectional shape, such as elliptical or tri , tetrahedral or multilobal cross-sectional shape.
  • step a) of the process of the invention provides a high performance filament yarn selected from one or more members of the groups comprising aramid filament yarns, polyolefin filament yarns, polybenzoxazole filament yarns and polybenzothiazole filament yarns.
  • the high-performance filament yarn provided in step a) of the method according to the invention comprises e.g. consists only of one of the said filament yarns.
  • the provided filament yarn can also consist of two or more of the said filament yarns.
  • a high-performance filament yarn may be provided, which consists of a mixture of aramid filaments and / or polyolefin filaments and / or polybenzoxazole filaments and / or polybenzothiazole filaments.
  • aramid filament yarns mean aromatic polyamide yarns wherein at least 85% of the amide (-CO-NH) bonds are bonded directly to two aromatic rings para-phenylene terephthalamide, a homopolymer resulting from the mol: mol polymerization of para-phenylenediamine and terephthalic acid dichloride, copolymers suitable for the present invention as aromatic polyamides which, in addition to para-phenylenediamine and terephthalic acid dichloride, contain small amounts of other diamines and / or It is a general rule that based on para-phenylenediamine and terephthalic acid, the other diamines and / or other Dicarbonklachloride may be incorporated with a share of up to 10 mol% in the polymer chain.
  • polyolefin filament yarns mean polyethylene or polypropylene filament yarns.
  • Polyethylene is understood to mean a substantially linear polyethylene material which has a molecular weight preferably greater than one million and may contain minor amounts of chain branching or comonomers, a "small proportion” meaning that no more than 5 chain branches or comonomers are present per 100 carbon atoms in the backbone additionally up to 50% by weight of one or more polymeric additives such as alkene-1 polymers, especially low density polyethylene, low pressure polypropylene and the like, or low molecular weight additives such as antioxidants, UV absorbers, dyes and the like, which are usually incorporated Polyethylene material is known as "extended chain polyethylene” (ECPE).
  • ECPE extended chain polyethylene
  • polypropylene is to be understood as meaning a substantially linear polypropylene which has a molecular weight of preferably more than one million.
  • polybenzoxazoles and “polybenzothiazoles” are polymers of the structural units shown below, in which the aromatic groups bonded to the nitrogen are preferably carbocyclic, as shown in the structural units. However, said groups may also be heterocyclic. Further, the nitrogen-bonded aromatic groups are preferably six-membered rings as shown in the structural units. However, said groups may also be formed as fused or unfused polycyclic systems.
  • the high-performance filament yarn provided in step a) of the process according to the invention preferably has a yarn denier in the range from 200 dtex to 7000 dtex, more preferably in the range from 400 dtex to 4000 dtex.
  • a high-performance filament yarn which preferably has a filament titer in the range from 0.2 dtex to 6.0 dtex, particularly preferably in the range from 0.5 dtex to 2.5 dtex.
  • step a) of the method according to the invention can be done in many ways. Particularly simply and therefore preferably, the provision of the high-performance filament yarn in step a) of the method according to the invention is accomplished by unwinding the high-performance filament yarn from a spool or from a creel.
  • step a) the high-performance filament yarn is provided at a suitable point of the spinning process, with which the respective high-performance filament yarn is produced. In general, any point of the respective spinning process is suitable, on which the high-performance filament yarn
  • the location In a melt spinning process, such as e.g. when spinning polyolefin filament yarn, the location may be where the yarn leaves the draw. In a wet-spinning process, such as e.g. When spun aramid filament yarn, the location may be where the yarn is in a dry state. Subsequently, the yarn is fibrillated online in step b) of the process according to the invention in the dry yarn state and cut in step c) of the method according to the invention to fibrils having high-performance short fibers of substantially the same length.
  • the high-performance filament yarn is fibrillated.
  • the fibrillation of the yarn is produced by the yarn undergoing friction, preferably in the longitudinal direction.
  • the friction is created by passing the yarn over a friction surface of any kind, e.g. is guided over a flat, curved or looped friction surface, while ensuring good contact between yarn and friction surface.
  • the intensity of fibrillation caused by passing the high performance filament yarn over the friction surface under tension - expressed by the frequency and length of the fibrils per unit length of yarn - depends on the friction coefficient of the friction surface and the applied stress.
  • the Hoch insfilamentgarn has a high Garntiter and consists of many filaments, advantageous to bring the individual filaments of the yarn before fibrillating in a configuration in which as many filaments lie on the surface of the yarn, for example by spreading the yarn. This is achieved in a simple manner by guiding the high-performance filament yarn over a curved friction surface.
  • the fibrillation of the high performance filament yarn in step b) of the method of the present invention can in principle be performed with any device that results in the high performance filament yarn having fibrils.
  • the eligible devices for fibrillation in step b) of the method according to the invention are preferably used which combine sufficient Fibrilltechniksintenstician with ease of implementation.
  • step b) the fibrillation with a conventional Scheibenfriktions réelle performed with friction discs, as it is used for false twisting of yarns, but in the inventive method, the speed of the friction discs ⁇ 2000 min-1, preferably ⁇ 1000 min-1, more preferably ⁇ 500 min-1 and most preferably 1 -200 m-1 or 0 min-1, and wherein the friction discs are preferably equipped with a surface of Ni-carbide or Ni-diamond.
  • the friction discs of the disc friction device are not driven during fibrillation.
  • the speed of rotation of the friction discs automatically becomes a value in one of the ranges mentioned in the previous paragraph.
  • step b) the high-performance filament yarn is drawn over the friction surface at a speed of 10 m / min to 2000 m / min.
  • step b) the fibrillation of the high-performance filament yarn is carried out in two or more fibrillation stages b1), b2), bn-1) and bn), wherein the stages b1), b2) , ... bn-1) prefibrillate the high performance filament yarn and stage bn) provides the yarn with the desired final fibrillation.
  • the number n of fibrillating stages is chosen according to the difficulty with which the respective high performance filament yarn can be fibrillated and according to the desired final fibrillation. Therefore, this embodiment of the method according to the invention is particularly advantageous if the Hoch insfilamentgarn provided in step a) is difficult to fibrillieren and / or a high Fibrilltechniksintenstician is desired.
  • bn-1) and bn) can be set the same or different (the latter eg by equipping the friction surface of the friction disks in the different fibrillating stages with different roughnesses of the friction surfaces or by differences in the number and arrangement of the friction discs or by different contact forces due to the choice of different thread tensions when entering the Fibril- lieraggregat), so that the desired Endfibrilltechnik can be set very precisely.
  • step c) of the process according to the invention the high-performance filament yarn comprising fibrils resulting from step b) is cut into high-performance short fibers having fibrils of substantially the same length.
  • any device capable of cutting high-performance filament yarns having fibrils to a substantially equal length is suitable.
  • mechanical or thermal devices are capable of this, so that in step c) of the method according to the invention the cutting can be performed mechanically (eg with one or more knives) or thermally (eg with laser beams).
  • the cutting in step c) of the method according to the invention takes place at an angle different from 0 ° to the axis of the filaments, preferably at an angle of 90 °.
  • step c) of the process of the invention the high performance filament yarn resulting from step b) fibrils is cut into high performance short fibers of substantially equal length, meaning in the present invention that the device selected for cutting has a certain cut length L in millimeters is set, and the device is capable of producing short fibers of this length L, wherein this length in the cut length range of 0.5 to 60 mm, preferably at most the percentage fluctuation given in formula (1)
  • L is the cut length set in mm on the cutter.
  • the substantially equal length of the high-performance short fibers resulting in step c) is in the range of 0.5 mm to 60 mm, particularly preferably in a range of 1 mm to 20 mm, more preferably in the range of 1 mm to 12 mm and most preferably in the range of 1 mm to 6 mm.
  • the high-performance short fibers of substantially the same length which result in step c) have a kaolin-containing filler retention capacity of 8% to 40%, particularly preferably 10% to 30%.
  • the object underlying the present invention is further achieved by fibril-comprising high-performance short fibers which are obtainable by the process according to the invention and are characterized in that the high-performance short fibers having fibrils have a length which is predetermined by a cut length L set in a cutting device, such that all fibril-containing high-performance short fibers have a substantially equal length.
  • “fibrils", "high-performance short fibers" and "of substantially the same length” means the same as in the method according to the invention described above.
  • the high performance short fibers of the invention having fibrils have a substantially equal length ranging from 0.5 mm to 60 mm, more preferably from 1 mm to 20 mm, even more preferably from 1 mm to 12 mm and most preferably in the range of 1 mm to 6 mm.
  • the high performance short fibers of the present invention have a kaolin-containing filler retention in the range of 8% to 40%, more preferably 10% to 30%.
  • step d) which consists in the high-performance short-circuiting fibrils resulting from step c) fibers of substantially equal length with the addition of one or more fillers in a conventional manner to an article containing these fibers are processed.
  • one or more pulps of high-performance filament yarns are added in step d) in addition to the filler or fillers.
  • the object underlying the present invention is achieved by an article comprising high performance short fibers having fibrils of substantially the same length and one or more fillers.
  • fibrils having fibrils of substantially the same length and one or more fillers.
  • the article additionally comprises one or more pulps of high performance short fibers.
  • a pulp of one or more high performance filament yarns of the same type e.g., para-aramid pulp
  • different types e.g., para-aramid pulp and meta-aramid pulp or polyacrylonitrile pulp
  • the article or the article according to the invention resulting from the process according to the invention may also contain one or more pulps which have not been produced from high-performance filament yarns, ie from yarns having one Tear strength of less than 10 g / dtex and a tensile modulus of less than 150 g / dtex, provided this does not affect the desired properties of said articles.
  • the substantially equal length of the fibers is in a range from 0.5 mm to 60 mm, more preferably in a range from 1 mm to 20 mm, more preferably in the range from 1 mm to 12 mm and most preferably in the range of 1 mm to 6 mm.
  • the weight fraction of the fibers in the total weight of the article is 0.1% to 25%, particularly preferably 0.5% to 10%.
  • the article is a friction lining, a clutch lining or another article in which tribological properties are important.
  • the friction discs are provided with a friction surface made of Ni carbide, and after exiting the disc frictional apparatus, the para-aramid filament yarn having the fibril is coated with a PierreT G28L1 penknife equipped with a carbide chopper blade and a sprocket of 45 teeth on the gear shaft A and a sprocket of 9 teeth on the gear shaft B, cut to a length of 3.4 mm, whereby para-aramid short fibers having fibrils of the same length obtained 3.4 mm become.
  • the sieve with the homogeneous mixture is vibrated in a vibrating sifter of the type JEL 200/80 (manufacturer: Fa. Engelsmann, Ludwigshafen, DE) for 3 minutes in the horizontal direction. Part of the mixture passes through the sieve, another part of the mixture, ie the sieve residue, remains on the sieve. From the weight of the sieve residue SR based on the weighted 20 g of the homogeneous kaolin / fiber mixture described above, the kaolin retention capacity is calculated according to (SR / 20 g) • 100 (%). The kaolin retention of the fibrillated and 3.4 mm long para-aramid short fibers is 14.9%.
  • This value is greater than the likewise approximately 4% kaolin retention of non-fibrillated 6.0 mm long para-aramid short Twaron 1080 fibers, and about the same size as the 15.7% kaolin retention of non-fibrillated 3.4 mm long para-aramid short fibers of type Twaron 1000 3360 (manufacturer: Tejin Twaron), but significantly smaller than the likewise approximately 80% kaolin retention of para-aramid pulp of the type 1095 (manufacturer: Teijin Twaron)
  • the bulk volume of a homogeneous mixture of 3 wt .-% para-aramid pulp of the type 1095 (manufacturer: Teijin Twaron) and 97 wt .-% of the filler kaolin is 3.37 ⁇ 0.3 ml / g, wherein ⁇ 0.3 ml / g represents the maximum error width.
  • the impact resistance of the cold compact with the short fibers having fibrils produced in accordance with i) is, at 1.75 mJ / mm 2, as high as the impact strength of a para-aramid short fiber 6 mm long but not fibrillated in the same way.
  • the impact strength of a cold compact produced in the same way but with para-aramid pulp of type 1095 is 1, 09 ⁇ 0.35 mJ / mm 2 .
  • a brake pad B1 was prepared according to a standard in the manufacturers of brake pads commercially used Produco GmbH.
  • Example 1 or 2 For comparison, the abrasion and the average coefficient of friction of a comparative brake lining V prepared as in v) in Example 1 or 2 was measured with the difference that instead of the fibrils having para-aramid short fibers of length 3.4 mm, a para-aramid pulp of the type 1095 of Teijin Twaron was used.
  • the table shows that the brake linings B1 and B2 produced with the fibrils according to the invention having para-aramid short fibers of length 3.4 mm have an abrasion on the covering, which is about 8% lower than the value of 13.0 g Abrasion of the comparative brake pad, which has a value of 14.1 g.
  • the table also shows that the brake linings B1 and B2 produced with the fibril-containing para-aramid short fibers of length 3.4 mm have an abrasion on the disc which, at a value of 8.1 g, is about 10% lower than The abrasion of the comparative brake pad, which has a value of 9.0 g.
  • the table shows that the average coefficient of friction of the brake pads B1 and B2 made with the para-aramid short fibers of length 3.4 mm according to the invention with a value of 0.43 in the range released by the manufacturers of brakes from 0.42 to 0.45 and approximately equal to the mean friction coefficient of the brake pad V made with p-aramid pulp.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Paper (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

L'invention concerne un procédé de fabrication de fibres courtes à hautes performances présentant des fibrilles qui comporte les étapes qui consistent a) à préparer un fil de filaments organiques à hautes performances dont la résistance à la déchirure est d'au moins 10 g/dtex et le module d'élasticité en traction d'au moins 150 g/dtex, b) à fibriller le fil de filaments à hautes performances à l'état sec, ce qui fournit un fil de filaments à hautes performances présentant des fibrilles et c) à découper le fil de filaments à hautes performances présentant des fibrilles ainsi obtenu dans l'étape b) en fibres courtes à hautes performances présentant des fibrilles, essentiellement de même longueur, des fibres courtes à hautes performances présentant des fibrilles et de longueur essentiellement identique, un objet qui contient ces fibres et une ou plusieurs charges et un procédé de fabrication d'un tel objet.
EP08805163A 2007-10-17 2008-10-09 Procédé de fabrication de fibres courtes à hautes performances présentant des fibrilles, fibres courtes à hautes performances présentant des fibrilles et objet qui les contient Withdrawn EP2203580A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08805163A EP2203580A1 (fr) 2007-10-17 2008-10-09 Procédé de fabrication de fibres courtes à hautes performances présentant des fibrilles, fibres courtes à hautes performances présentant des fibrilles et objet qui les contient

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP07020274 2007-10-17
PCT/EP2008/063512 WO2009050096A1 (fr) 2007-10-17 2008-10-09 Procédé de fabrication de fibres courtes à hautes performances présentant des fibrilles, fibres courtes à hautes performances présentant des fibrilles et objet qui les contient
EP08805163A EP2203580A1 (fr) 2007-10-17 2008-10-09 Procédé de fabrication de fibres courtes à hautes performances présentant des fibrilles, fibres courtes à hautes performances présentant des fibrilles et objet qui les contient

Publications (1)

Publication Number Publication Date
EP2203580A1 true EP2203580A1 (fr) 2010-07-07

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EP08805163A Withdrawn EP2203580A1 (fr) 2007-10-17 2008-10-09 Procédé de fabrication de fibres courtes à hautes performances présentant des fibrilles, fibres courtes à hautes performances présentant des fibrilles et objet qui les contient

Country Status (7)

Country Link
US (1) US20100206684A1 (fr)
EP (1) EP2203580A1 (fr)
JP (1) JP2011501786A (fr)
KR (1) KR20100083794A (fr)
CN (1) CN101827965A (fr)
RU (1) RU2010119555A (fr)
WO (1) WO2009050096A1 (fr)

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DE102012017874A1 (de) * 2012-09-11 2014-03-27 Hoerbiger Antriebstechnik Holding Gmbh Verfahren zur Herstellung eines Reibbelags sowie Reibbelag
CN105164337B (zh) * 2013-05-03 2018-03-02 帝人芳纶有限公司 制备对位芳族聚酰胺浆料和短切纤维的混合物的方法、混合物及其用途
CN104087245A (zh) * 2014-07-01 2014-10-08 北京瑞斯福高新科技股份有限公司 一种大轴重货车闸瓦用摩擦材料及制备方法
JP6424518B2 (ja) * 2014-09-01 2018-11-21 東洋紡株式会社 ポリベンザゾールパルプ
DE102021001251A1 (de) 2021-03-09 2022-09-15 Twd Fibres Gmbh Verfahren zur Herstellung eines Polyethylen-Multifilamentgarns

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CN111750015A (zh) * 2019-03-29 2020-10-09 株式会社爱德克斯 制动块和底层材料组合物

Also Published As

Publication number Publication date
WO2009050096A1 (fr) 2009-04-23
US20100206684A1 (en) 2010-08-19
CN101827965A (zh) 2010-09-08
RU2010119555A (ru) 2011-11-27
KR20100083794A (ko) 2010-07-22
JP2011501786A (ja) 2011-01-13

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