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WO2014115594A1 - Matériau de frottement - Google Patents

Matériau de frottement Download PDF

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Publication number
WO2014115594A1
WO2014115594A1 PCT/JP2014/050409 JP2014050409W WO2014115594A1 WO 2014115594 A1 WO2014115594 A1 WO 2014115594A1 JP 2014050409 W JP2014050409 W JP 2014050409W WO 2014115594 A1 WO2014115594 A1 WO 2014115594A1
Authority
WO
WIPO (PCT)
Prior art keywords
friction material
friction
weight
material composition
total amount
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/JP2014/050409
Other languages
English (en)
Japanese (ja)
Inventor
和秀 山本
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.)
Nisshinbo Brake Inc
Original Assignee
Nisshinbo Brake Inc
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 Nisshinbo Brake Inc filed Critical Nisshinbo Brake Inc
Publication of WO2014115594A1 publication Critical patent/WO2014115594A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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
    • F16D2200/00—Materials; Production methods therefor
    • F16D2200/006—Materials; Production methods therefor containing fibres or particles
    • F16D2200/0073—Materials; Production methods therefor containing fibres or particles having lubricating properties

Definitions

  • the present invention relates to a friction material obtained by molding a friction material composition of NAO (Non-Asbestos-Organic) material that does not contain a copper component and is used for a disc brake pad.
  • NAO Non-Asbestos-Organic
  • a disc brake is used as a braking device for a passenger car, and a disc brake pad in which a friction material is bonded to a metal or resin base member such as steel is used as the friction member.
  • the friction material includes a semi-metallic friction material containing 30% by weight or more and less than 60% by weight of steel fiber as a fiber base material, and steel fiber in a part of the fiber base material. Are classified into a low steel friction material containing less than 30% by weight with respect to the total amount of the friction material composition, and a NAO material that does not include steel fibers such as steel fibers and stainless fibers as a fiber base material.
  • copper components such as copper or copper alloy fibers or particles are essential components in order to satisfy strict required performance. About 0 to 20.0% by weight is added.
  • Friction mechanism and thermal conductivity characteristics of copper components such as copper and copper alloy fibers or particles are indispensable for friction materials used in disc brake pads, but exclude copper components from friction materials As a result, it has become clear that various problems that have not existed before, such as problems that the friction coefficient stability, fade resistance, and wear resistance at high speeds and high loads are reduced.
  • a binder is 12 to 24% by volume
  • a fiber is 2 to 10% by volume
  • at least one lubricant is 5% by volume or less
  • at least one or more abrasives are 15 to 30% by volume.
  • a brake friction material containing 10 to 24% by volume of at least one titanate and substantially free of copper and asbestos, that is, a friction material of NAO material containing no copper component is disclosed.
  • the present invention provides a friction material that can ensure required performances of wear resistance and rust-fixing property in a friction material molded from a friction material composition of NAO material not containing a copper component, which is used for a disc brake pad. For the purpose.
  • a friction material formed from a friction material composition of a NAO material that does not contain a copper component used for a disc brake pad is a metal as a binder, organic fiber, or lubricant.
  • a friction material containing a specific amount of an inorganic friction modifier, an organic friction modifier, a pH adjuster of less than 5, a substance having a Mohs hardness of 8.0 or more, a simple metal other than copper, and an alloy other than a copper alloy The inventors have found that the above problems can be solved by using the composition, and have completed the present invention.
  • the present invention is a friction material obtained by molding a friction material composition of NAO material that does not contain a copper component and is used for a disc brake pad, and is based on the following technique.
  • the friction material composition includes 9.0 to 12 binders based on the total amount of the friction material composition. 0.0 wt%, 2.0 to 8.0 wt% of organic fiber with respect to the total amount of the friction material composition, and 0.5 to 7. wt. Of metal sulfide type lubricant as the lubricant with respect to the total amount of the friction material composition.
  • wollastonite is 1.0 to 3.0 wt% with respect to the total amount of the friction material
  • the particulate inorganic friction modifier with Mohs hardness of 4.5 or more and less than 8.0 is the total amount of the friction material composition.
  • Zirconium oxide having an average particle size of 1.0 ⁇ m to 5.0 ⁇ m contained in the particulate inorganic friction modifier having a Mohs hardness of 4.5 or more and less than 8.0 is 5 with respect to the total amount of the friction material composition.
  • Zirconium silicate having an average particle size of 10.0 to 15.0 ⁇ m in an amount of 0.0 to 20.0 wt% is 0.5 to 1.5 wt% based on the total amount of the friction material composition ( 1) Friction material.
  • a friction material that can ensure wear resistance and rust-resistance adhesion in a friction material molded from a friction material composition of a NAO material that does not contain a copper component and is used for a disc brake pad.
  • the binding material in the friction material obtained by molding the friction material composition containing no copper component used for the disc brake pad, is 9.0 to 12.0% by weight with respect to the total amount of the friction material composition,
  • the organic fiber is 2.0 to 8.0% by weight based on the total amount of the friction material composition, and the metal sulfide-based lubricant is 0.5 to 7.0% by weight based on the total amount of the friction material composition.
  • the quality lubricant is 2.0 to 6.0% by weight with respect to the total amount of the friction material composition
  • the titanate is 8.0 to 35.0% by weight with respect to the total amount of the friction material composition.
  • a particulate inorganic friction modifier having a wollastonite of 1.0 to 3.0% by weight based on the total amount of the friction material and a Mohs hardness of 4.5 or more and less than 8.0 is 11.
  • the organic friction modifier is 3.0 to 8.0% by weight with respect to the total amount of the friction material composition
  • the pH adjuster is 2.0% with respect to the total amount of the friction material composition.
  • a friction material composition containing ⁇ 6.0% by weight, having a Mohs hardness of 8.0 or more, a simple metal other than copper, and an alloy other than a copper alloy is used.
  • Binder organic fiber, metal sulfide lubricant, carbonaceous lubricant, titanate, wollastonite, particulate inorganic friction modifier with Mohs hardness of 4.5 to less than 8.0, Mohs hardness Inorganic friction modifiers, organic friction modifiers, and pH modifiers of less than 4.5 are in the above range, and a material having a Mohs hardness of 8.0 or more, a simple metal other than copper, and an alloy other than copper alloy are not included.
  • the friction material composition the required performance of wear resistance and rust resistance is ensured in the friction material molded from the friction material composition of NAO material that does not contain copper component, which is used for disc brake pads.
  • the friction material which can be provided can be provided.
  • binder straight phenol resin, resin obtained by modifying phenol resin with various elastomers such as cashew oil, silicone oil, acrylic rubber, aralkyl modified phenol resin obtained by reacting phenols, aralkyl ethers and aldehydes
  • elastomers such as cashew oil, silicone oil, acrylic rubber
  • aralkyl modified phenol resin obtained by reacting phenols, aralkyl ethers and aldehydes
  • the binder generally used for friction materials such as thermosetting resins in which various elastomers, fluoropolymers and the like are dispersed in a phenol resin can be used, and these can be used alone or in combination of two or more. .
  • organic fibers examples include organic fibers that are commonly used in friction materials such as aramid fibers, cellulose fibers, poly-paraphenylenebenzobisoxazole fibers, and acrylic fibers. These may be used alone or in combination of two or more. Can be used.
  • metal sulfide lubricant molybdenum disulfide, zinc sulfide, tin sulfide, composite metal sulfide, etc.
  • carbonaceous lubricant friction materials such as graphite, petroleum coke, activated carbon, oxidized polyacrylonitrile fiber pulverized powder, etc.
  • Lubricants usually used can be mentioned, and these can be used alone or in combination of two or more.
  • the titanate preferably has a plate-like shape or an irregular shape having a plurality of convex portions, and is usually used for friction materials such as potassium titanate, lithium potassium titanate, and magnesium potassium titanate.
  • a titanate is mentioned, These can be used individually by 1 type or in combination of 2 or more types.
  • particulate inorganic friction modifier with Mohs hardness of 4.5 or more and less than 8.0, friction of triiron tetroxide, zeolite, calcium silicate hydrate, glass beads, magnesium oxide, zirconium oxide, zirconium silicate, etc.
  • Particulate inorganic friction modifiers usually used for the material can be mentioned, and these can be used alone or in combination of two or more.
  • inorganic friction modifiers having a Mohs hardness of less than 4.5 include inorganic friction modifiers commonly used in friction materials such as mica, calcined vermiculite, unfired vermiculite, talc, dolomite, and kaolin. It can use individually or in combination of 2 or more types.
  • zirconium oxide having an average particle diameter of 1.0 ⁇ m to 5.0 ⁇ m is 5.0 to 5.0% based on the total amount of the friction material composition.
  • Organic friction modifiers are usually used for friction materials such as cashew dust, pulverized tire tread rubber, vulcanized rubber powder such as nitrile rubber, acrylic rubber, silicone rubber, butyl rubber, or unvulcanized rubber powder.
  • An adjusting material is mentioned, These can be used individually by 1 type or in combination of 2 or more types.
  • Calcium hydroxide can be used as a pH adjusting material.
  • a filler such as barium sulfate or calcium carbonate is used.
  • the friction material composition of the present invention is characterized by not containing a substance having a Mohs hardness of 8.0 or more, a metal simple substance other than copper, and an alloy other than a copper alloy. Because it does not contain a material with a Mohs hardness of 8.0 or more, such as alumina or silicon carbide, the dynamic friction coefficient during service braking does not become too large, and the balance of braking force distribution with the front wheel brake is good. become. In addition, since it does not contain a single metal or an alloy having a large specific gravity, the raw material is not segregated during conveyance of the friction material mixture, and a homogeneous product can be provided.
  • the friction material used in the disc brake of the present invention is separately mixed with the friction material raw material mixture obtained by mixing the friction material composition mixed in a predetermined amount uniformly using a mixer.
  • a mixer Surface treatment, heat-pressing molding process in which a back plate coated with an adhesive is stacked and placed in a thermoforming mold, and heated and pressed to mold, and the resulting molded product is heated to complete the curing reaction of the binder It is manufactured through a heat treatment step and a polishing step for forming a friction surface.
  • granulation obtained by granulation step of granulating friction material raw material mixture, kneading step of kneading friction material raw material mixture, friction material raw material mixture or granulation step before heating and pressure molding step The pre-molding process in which the kneaded product obtained in the kneading process is put into a pre-molding mold and the pre-molded product is molded is performed. After the heat and pressure molding process, the painting / paint baking process and the scorch process are performed.
  • Friction material compositions having the compositions shown in Table 1 were mixed for 5 minutes with a Redige mixer, and pre-molded by pressing for 1 minute at 10 MPa in a molding die. This preform is placed on a steel back plate that has been washed, surface-treated, and coated with an adhesive, and molded in a thermoforming mold at a molding temperature of 150 ° C. and a molding pressure of 40 MPa for 10 minutes, and then 200 Heat treatment (post-curing) was carried out at 5 ° C.
  • a friction material which is used for a disc brake pad and which is obtained by molding a friction material composition of a NAO material not containing a copper component can satisfy the required performance of wear resistance and rust resistance adhesion. It can be obtained and is of very high practical value.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

La présente invention concerne le problème de mise en oeuvre d'un matériau de frottement grâce auquel les exigences de résistance à l'abrasion et de résistance à la fixation peuvent être assurées, ledit matériau de frottement étant obtenu par moulage d'une composition de matériau de frottement comportant un matériau organique sans amiante (NAO) qui ne comprend pas de composante de cuivre. Ce problème est résolu par l'utilisation d'une composition de matériau de frottement comprenant : de 9,0 à 12,0 en pourcentage en poids d'un liant ; de 2,0 à 8,0 en pourcentage en poids d'une fibre organique ; de 0,5 à 7,0 en pourcentage en poids d'un lubrifiant à base de sulfure métallique ; de 2,0 à 6,0 en pourcentage en poids d'un lubrifiant à base d'une substance carbonée ; de 8,0 à 35,0 en pourcentage en poids de titanate ; de 1,0 à 3,0 en pourcentage en poids de wollastonite ; de 11,0 à 27,0 en pourcentage en poids d'une solution d'ajustement de frottement inorganique sous forme de particules ayant une dureté Mohs d'au moins 4,5 mais inférieure à 8,0 ; de 2,0 à 11,0 en pourcentage en poids d'une solution d'ajustement de frottement inorganique ayant une dureté Mohs de moins de 4,5 ; de 3,0 à 8,0 en pourcentage en poids d'une solution d'ajustement de frottement organique ; et de 2,0 à 6,0 en pourcentage en poids d'une solution d'ajustement de pH. La composition de matériau de frottement ne comprend pas : des substances ayant une dureté Mohs égale ou supérieure à 8,0 ; un métal élémentaire autre que le cuivre ; et un alliage autre que l'alliage de cuivre.
PCT/JP2014/050409 2013-01-23 2014-01-14 Matériau de frottement Ceased WO2014115594A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2013-010158 2013-01-23
JP2013010158 2013-01-23
JP2013-272959 2013-12-27
JP2013272959A JP2014159871A (ja) 2013-01-23 2013-12-27 摩擦材

Publications (1)

Publication Number Publication Date
WO2014115594A1 true WO2014115594A1 (fr) 2014-07-31

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Family Applications (1)

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PCT/JP2014/050409 Ceased WO2014115594A1 (fr) 2013-01-23 2014-01-14 Matériau de frottement

Country Status (2)

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JP (1) JP2014159871A (fr)
WO (1) WO2014115594A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016017488A1 (fr) * 2014-08-01 2016-02-04 日清紡ブレーキ株式会社 Garniture de friction
WO2017014173A1 (fr) * 2015-07-22 2017-01-26 日清紡ブレーキ株式会社 Matériau de friction
JP2017025286A (ja) * 2015-07-22 2017-02-02 日清紡ブレーキ株式会社 摩擦材
CN114483843A (zh) * 2020-10-23 2022-05-13 日清纺制动器株式会社 摩擦材料

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6753649B2 (ja) * 2015-02-06 2020-09-09 日本ブレーキ工業株式会社 摩擦材および摩擦部材
JP6753650B2 (ja) * 2015-02-20 2020-09-09 日本ブレーキ工業株式会社 摩擦材および摩擦部材
JP6596956B2 (ja) * 2015-06-12 2019-10-30 日立化成株式会社 摩擦材組成物、およびこれを用いた摩擦材および摩擦部材
US11448277B2 (en) 2015-07-22 2022-09-20 Nisshinbo Brake, Inc. Friction material
JP2017141351A (ja) * 2016-02-10 2017-08-17 日立化成株式会社 摩擦材組成物、該摩擦材組成物を用いた摩擦材及び摩擦部材
WO2025263256A1 (fr) * 2024-06-18 2025-12-26 日清紡ブレーキ株式会社 Paire de frottement

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* Cited by examiner, † Cited by third party
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JPH0532956A (ja) * 1991-07-26 1993-02-09 Aisin Chem Co Ltd 摩擦材
JP2001158904A (ja) * 1999-11-30 2001-06-12 Tokico Ltd ブレーキ摩擦材
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JP5071604B2 (ja) * 2010-11-19 2012-11-14 日立化成工業株式会社 ノンアスベスト摩擦材組成物、これを用いた摩擦材及び摩擦部材
JP2012255052A (ja) * 2011-06-07 2012-12-27 Hitachi Chemical Co Ltd ノンアスベスト摩擦材組成物
JP2012255054A (ja) * 2011-06-07 2012-12-27 Hitachi Chemical Co Ltd ノンアスベスト摩擦材組成物

Patent Citations (7)

* Cited by examiner, † Cited by third party
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JPH0532956A (ja) * 1991-07-26 1993-02-09 Aisin Chem Co Ltd 摩擦材
JP2001158904A (ja) * 1999-11-30 2001-06-12 Tokico Ltd ブレーキ摩擦材
JP2003238700A (ja) * 2002-02-21 2003-08-27 Nisshinbo Ind Inc 非石綿系摩擦材
JP5057000B2 (ja) * 2010-11-19 2012-10-24 日立化成工業株式会社 ノンアスベスト摩擦材組成物、これを用いた摩擦材及び摩擦部材
JP5071604B2 (ja) * 2010-11-19 2012-11-14 日立化成工業株式会社 ノンアスベスト摩擦材組成物、これを用いた摩擦材及び摩擦部材
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JP2012255054A (ja) * 2011-06-07 2012-12-27 Hitachi Chemical Co Ltd ノンアスベスト摩擦材組成物

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016017488A1 (fr) * 2014-08-01 2016-02-04 日清紡ブレーキ株式会社 Garniture de friction
JP2016035005A (ja) * 2014-08-01 2016-03-17 日清紡ブレーキ株式会社 摩擦材
KR20170039228A (ko) * 2014-08-01 2017-04-10 닛신보 브레이크 가부시키가이샤 마찰재
CN106574169A (zh) * 2014-08-01 2017-04-19 日清纺制动器株式会社 摩擦材料
EP3187562A4 (fr) * 2014-08-01 2018-03-07 Nisshinbo Brake Inc. Garniture de friction
US9920806B2 (en) * 2014-08-01 2018-03-20 Nisshinbo Brake, Inc. Friction material
CN106574169B (zh) * 2014-08-01 2019-05-03 日清纺制动器株式会社 摩擦材料
KR102497665B1 (ko) * 2014-08-01 2023-02-09 닛신보 브레이크 가부시키가이샤 마찰재
WO2017014173A1 (fr) * 2015-07-22 2017-01-26 日清紡ブレーキ株式会社 Matériau de friction
JP2017025286A (ja) * 2015-07-22 2017-02-02 日清紡ブレーキ株式会社 摩擦材
CN107849431A (zh) * 2015-07-22 2018-03-27 日清纺制动器株式会社 摩擦材料
CN114483843A (zh) * 2020-10-23 2022-05-13 日清纺制动器株式会社 摩擦材料

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