JPH04275386A - Non-asbestos friction material - Google Patents
Non-asbestos friction materialInfo
- Publication number
- JPH04275386A JPH04275386A JP5928791A JP5928791A JPH04275386A JP H04275386 A JPH04275386 A JP H04275386A JP 5928791 A JP5928791 A JP 5928791A JP 5928791 A JP5928791 A JP 5928791A JP H04275386 A JPH04275386 A JP H04275386A
- Authority
- JP
- Japan
- Prior art keywords
- friction material
- asbestos
- fibers
- porosity
- component
- 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.)
- Pending
Links
- 239000002783 friction material Substances 0.000 title claims abstract description 34
- 239000010425 asbestos Substances 0.000 title claims abstract description 23
- 229910052895 riebeckite Inorganic materials 0.000 title claims abstract description 23
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 12
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000945 filler Substances 0.000 claims abstract description 5
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 5
- 239000010439 graphite Substances 0.000 claims abstract description 5
- 239000000835 fiber Substances 0.000 claims description 16
- 229920005989 resin Polymers 0.000 claims description 13
- 239000011347 resin Substances 0.000 claims description 13
- 239000005011 phenolic resin Substances 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 229920006231 aramid fiber Polymers 0.000 claims description 3
- 229910001369 Brass Inorganic materials 0.000 claims description 2
- 229910000906 Bronze Inorganic materials 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000004760 aramid Substances 0.000 claims description 2
- 239000010951 brass Substances 0.000 claims description 2
- 239000010974 bronze Substances 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000012784 inorganic fiber Substances 0.000 claims description 2
- 239000011490 mineral wool Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 8
- 238000005562 fading Methods 0.000 abstract description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 244000226021 Anacardium occidentale Species 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 235000020226 cashew nut Nutrition 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
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
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D2069/002—Combination of different friction materials
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、自動車のブレーキパッ
ド，ブレーキライニング，クラッチフェーシング等とし
て使用される摩擦材であって、繊維成分として石綿を含
まず、耐フェード性及び鳴き性能が優れた非石綿系摩擦
材に関するものである。[Industrial Application Field] The present invention is a friction material used for automobile brake pads, brake linings, clutch facings, etc., which does not contain asbestos as a fiber component and has excellent fade resistance and squeal performance. This relates to asbestos-based friction materials.
【０００２】0002
【従来の技術】従来、自動車のブレーキパッド，ブレー
キライニング，クラッチフェーシング等に使用される摩
擦材は、その基材として石綿が多く使用されていたが、
石綿はその粉塵が人体への有害性を指摘された結果、そ
の使用を規制されつつあり、石綿を使用しない摩擦材に
対する要求が強くなってきている。[Prior Art] Conventionally, friction materials used for automobile brake pads, brake linings, clutch facings, etc. have often been made of asbestos as their base material.
As a result of it being pointed out that the dust of asbestos is harmful to the human body, the use of asbestos is being regulated, and there is a growing demand for friction materials that do not use asbestos.
【０００３】そこで、石綿を使用しない非石綿系摩擦材
について多くの提案がなされているが、それらの多くは
繊維成分として耐熱性有機繊維，ガラス繊維，金属繊維
を用い、結合材としてフェノール樹脂等の熱硬化性樹脂
を、充填材粉末成分として黒鉛，硫酸バリウム，アルミ
ナ等を用いたものである。[0003] Therefore, many proposals have been made for non-asbestos friction materials that do not use asbestos, but most of them use heat-resistant organic fibers, glass fibers, or metal fibers as fiber components, and phenolic resins or the like as binding materials. This is a thermosetting resin using graphite, barium sulfate, alumina, etc. as filler powder components.
【０００４】0004
【発明が解決しようとする課題】然し乍ら、結合材とし
て上記のフェノール樹脂等の熱硬化性樹脂を使用した非
石綿系摩擦材は、石綿系摩擦材に比べ、補強用繊維の含
有量が少なく粉体原料の比率が高い為、一般に強度が小
さい。この問題を解決するために補強効果が大きいフロ
ーの長い熱硬化性樹脂を結合材として用いているのが現
状であるが、フローの長い熱硬化性樹脂を使用すると、
気孔率が低下するため加熱加圧成型時にガス抜け不良に
よる膨れが摩擦材表面に発生しやすくなり、また耐フェ
ード性，鳴き性能も良好ではないという問題点がある。[Problems to be Solved by the Invention] However, non-asbestos-based friction materials that use thermosetting resins such as the above-mentioned phenolic resins as binders have a lower content of reinforcing fibers than asbestos-based friction materials. Since the ratio of body raw materials is high, the strength is generally low. To solve this problem, the current practice is to use a long-flowing thermosetting resin with a strong reinforcing effect as a bonding material, but if a long-flowing thermosetting resin is used,
Due to the reduced porosity, blisters are likely to occur on the surface of the friction material due to poor gas release during hot-pressure molding, and the fade resistance and squeal performance are also poor.
【０００５】従って本発明が解決しようとする課題は、
上記の非石綿系摩擦材において加熱加圧成型時に膨れが
発生せず、また強度が良好で耐フェード性及び鳴き性能
が優れた摩擦材を提供することである。[0005] Therefore, the problems to be solved by the present invention are as follows:
It is an object of the present invention to provide a non-asbestos friction material which does not bulge during heating and pressure molding, has good strength, and has excellent fade resistance and squealing performance.
【０００６】[0006]
【課題を解決するための手段】本発明は上記の課題を解
決することを目的としてなされたもので、その構成は石
綿以外の繊維成分と、フェノール樹脂等の熱硬化性樹脂
成分と、黒鉛，硫酸バリウム等の充填材粉末成分とを含
有する摩擦材において、摩擦材の外層部の気孔率が内層
部の気孔率よりも大きいことを特徴とするものである。[Means for Solving the Problems] The present invention has been made with the aim of solving the above problems, and is composed of a fiber component other than asbestos, a thermosetting resin component such as phenol resin, graphite, A friction material containing a filler powder component such as barium sulfate is characterized in that the porosity of the outer layer of the friction material is greater than the porosity of the inner layer.
【０００７】即ち、本発明の発明者は、摩擦材内層部の
気孔率を従来通りの大きさに保つことにより良好な強度
を維持し、外層部の気孔率を大きくすることにより加熱
加圧成型時のガス抜け不良による摩擦材表面の膨れ発生
の防止、及び耐フェード性，鳴き性能の改良が達成でき
ることを知得し、本発明を成し遂げたのである。That is, the inventor of the present invention maintains good strength by keeping the porosity of the inner layer part of the friction material at the same level as before, and by increasing the porosity of the outer layer part, the inventor of the present invention maintains good strength by increasing the porosity of the outer layer part. The present invention was achieved based on the knowledge that it is possible to prevent blistering on the surface of the friction material due to insufficient gas release during use, and to improve fade resistance and squeal performance.
【０００８】気孔率を高くする部分は摩擦面が含まれて
いれば外層部の一部でも良く、例えば摩擦面に接する外
層部のみでも良い。[0008] The portion that increases the porosity may be a part of the outer layer as long as the friction surface is included, and for example, it may be only the outer layer that is in contact with the friction surface.
【０００９】次に本発明摩擦材の製造方法について述べ
ると、周知の非石綿系摩擦材料を予備成型した後、予備
成型品外層部のみに赤外線，遠赤外線等による熱処理を
施し、その後従来行なわれている加熱加圧成型及び熱処
理を行ない摩擦材を得る。また、赤外線，遠赤外線等に
よる予備成型品外層部の熱処理を行なわず、該部分のみ
フローの長い熱硬化性樹脂の代わりにフローの短い熱硬
化性樹脂を使用したり、熱硬化性樹脂の含有量を減らす
ことにより、同様の効果が得られる。Next, the method for manufacturing the friction material of the present invention will be described. After preforming a well-known non-asbestos friction material, heat treatment is performed on only the outer layer of the preform using infrared rays, far infrared rays, etc. A friction material is obtained by heat-pressing molding and heat treatment. In addition, we do not heat-treat the outer layer of the preformed product using infrared rays, far infrared rays, etc., and instead of using thermosetting resin with a long flow, we use a thermosetting resin with a short flow, or we use a thermosetting resin containing a thermosetting resin. A similar effect can be obtained by reducing the amount.
【００１０】而して、本発明において繊維成分として使
用されるものには、アラミド繊維等の有機繊維、ガラス
繊維，ロックウール，セラミックス繊維等の無機繊維、
銅，青銅，アルミニウム，黄銅等の金属繊維が挙げられ
る。また、結合材としては、フェノール樹脂，尿素樹脂
，メラミン樹脂またはそれらの変性樹脂のような熱硬化
性樹脂やポリアセタール，芳香族ポリイミド樹脂，フッ
素樹脂等の耐熱性樹脂が挙げられ、充填材としては黒鉛
，金属粉，二硫化モリブデン，カシューダストのような
潤滑作用のあるものや、硫酸バリウム，炭酸カルシウム
等が挙げられる。The fiber components used in the present invention include organic fibers such as aramid fibers, inorganic fibers such as glass fibers, rock wool, and ceramic fibers;
Examples include metal fibers such as copper, bronze, aluminum, and brass. In addition, examples of binders include thermosetting resins such as phenol resins, urea resins, melamine resins, or modified resins thereof, and heat-resistant resins such as polyacetals, aromatic polyimide resins, and fluorine resins. Examples include lubricating materials such as graphite, metal powder, molybdenum disulfide, and cashew dust, as well as barium sulfate and calcium carbonate.
【００１１】[0011]
【発明の作用】本発明摩擦材は非石綿系摩擦材であって
、摩擦材内層部の気孔率は従来と同程度であり、外層部
のみ気孔率が大きいので摩擦材の強度が良好で耐フェー
ド性及び鳴き性能が向上する。Effects of the Invention The friction material of the present invention is a non-asbestos friction material, and the porosity of the inner layer of the friction material is comparable to that of the conventional material, and only the outer layer has a large porosity, so the friction material has good strength and durability. Improved fading and squealing performance.
【００１２】0012
【実施例】次に本発明の実施例について説明する。結合
材としてフェノール樹脂を、充填材としてカシューダス
ト、炭酸カルシウムをそれぞれ用い、繊維基材としてア
ラミド繊維，ガラス繊維を用いてこれらを均一に混合し
、温度６０℃，圧力１００ｋｇ／ｃｍ２ で予備成型し
た。
次いでこの予備成型品の表面に赤外線による熱処理を施
し、温度１６０℃，圧力２００ｋｇ／ｃｍ２ で６分間
加熱加圧成型した後、更に温度１８０℃で６時間熱処理
して表１に示す実施例Ａ，Ｂ，Ｃの摩擦材を得た。[Example] Next, an example of the present invention will be described. Phenol resin was used as a binder, cashew dust and calcium carbonate were used as fillers, and aramid fiber and glass fiber were used as fiber base materials. These were mixed uniformly and preformed at a temperature of 60°C and a pressure of 100kg/cm2. . Next, the surface of this preformed product was heat-treated with infrared rays, heated and pressure molded at a temperature of 160°C and a pressure of 200 kg/cm2 for 6 minutes, and then further heat-treated at a temperature of 180°C for 6 hours to obtain Example A shown in Table 1. Friction materials B and C were obtained.
【００１３】また上記実施例において赤外線による熱処
理を施さない比較例ａ，ｂ，ｃの摩擦材を同様にして得
た。Further, friction materials of Comparative Examples a, b, and c, which were not subjected to infrared heat treatment in the above examples, were obtained in the same manner.
【００１４】これらの摩擦材について膨れ不良調査を行
なった結果及びＪＡＳＯ「乗用者ブレーキ装置ダイナモ
メーター試験方法」に規定されている摩擦性能試験法に
よりテストを行なった結果及び実車による鳴き試験結果
を表３に示す。[0014] The results of investigating these friction materials for blistering defects, the results of testing according to the friction performance testing method stipulated in the JASO "Passenger brake system dynamometer testing method" and the results of the squeal test using an actual vehicle are shown below. Shown in 3.
【００１５】[0015]
【発明の効果】以上の様に、繊維基材として石綿を含ま
ない本発明非石綿系摩擦材は、実施例に示したように、
摩擦材外層部の気孔率を内層部より大きくした結果、耐
フェード性及び鳴き性能が上記の通り向上するので、自
動車のブレーキパッド，ブレーキライニング，クラッチ
フェーシング等に使用する摩擦材として好適である。[Effects of the Invention] As described above, the non-asbestos friction material of the present invention, which does not contain asbestos as a fiber base material, has the following properties:
As a result of making the porosity of the outer layer of the friction material larger than that of the inner layer, the fade resistance and squeal performance are improved as described above, so it is suitable as a friction material for use in automobile brake pads, brake linings, clutch facings, etc.
【００１６】[0016]
【表１】[Table 1]
【００１７】[0017]
【表２】[Table 2]
Claims (2)
等の熱硬化性樹脂成分と黒鉛，硫酸バリウム等の充填材
粉末成分とを含有する摩擦材において、摩擦材の外層部
の気孔率が内層部の気孔率よりも大きいことを特徴とす
る非石綿系摩擦材。Claim 1: In a friction material containing a fiber component other than asbestos, a thermosetting resin component such as a phenol resin, and a filler powder component such as graphite or barium sulfate, the porosity of the outer layer of the friction material is lower than that of the inner layer. A non-asbestos friction material characterized by a porosity greater than that of .
等の有機繊維、ガラス繊維，ロックウール，セラミック
ス繊維等の無機繊維、銅，青銅，アルミニウム，黄銅等
の金属繊維であることを特徴とする請求項１に記載の非
石綿系摩擦材。[Claim 2] The fiber components other than asbestos are organic fibers such as aramid fibers, inorganic fibers such as glass fibers, rock wool, and ceramic fibers, and metal fibers such as copper, bronze, aluminum, and brass. The non-asbestos friction material according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5928791A JPH04275386A (en) | 1991-03-02 | 1991-03-02 | Non-asbestos friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5928791A JPH04275386A (en) | 1991-03-02 | 1991-03-02 | Non-asbestos friction material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04275386A true JPH04275386A (en) | 1992-09-30 |
Family
ID=13109025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5928791A Pending JPH04275386A (en) | 1991-03-02 | 1991-03-02 | Non-asbestos friction material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04275386A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016125892A1 (en) * | 2015-02-06 | 2016-08-11 | 日本ブレーキ工業株式会社 | Friction material and friction member |
| JP2016145274A (en) * | 2015-02-06 | 2016-08-12 | 日本ブレーキ工業株式会社 | Friction material and friction member |
| JP2016153440A (en) * | 2015-02-20 | 2016-08-25 | 日本ブレーキ工業株式会社 | Friction material and friction member |
-
1991
- 1991-03-02 JP JP5928791A patent/JPH04275386A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016125892A1 (en) * | 2015-02-06 | 2016-08-11 | 日本ブレーキ工業株式会社 | Friction material and friction member |
| JP2016145274A (en) * | 2015-02-06 | 2016-08-12 | 日本ブレーキ工業株式会社 | Friction material and friction member |
| JP2016153440A (en) * | 2015-02-20 | 2016-08-25 | 日本ブレーキ工業株式会社 | Friction material and friction member |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102347391B1 (en) | friction material | |
| US20040241429A1 (en) | Friction material | |
| JPH03247628A (en) | Non-asbestos friction material | |
| JPH04275386A (en) | Non-asbestos friction material | |
| JP2000144104A (en) | Friction material | |
| JPH04106183A (en) | Non-asbestos friction material | |
| JPH05331451A (en) | Non-asbestos friction material | |
| JP2991970B2 (en) | Friction material | |
| JP2811574B2 (en) | Friction material | |
| CN111720461A (en) | Friction lining without binding agent, method for producing friction lining and use of friction lining | |
| JPS62237127A (en) | Friction material | |
| JP2001247852A (en) | Non-asbestos friction material | |
| JP2827136B2 (en) | Non-asbestos friction material | |
| JPH04318093A (en) | Non-asbestos friction material | |
| JPS5813684A (en) | Friction material | |
| JPH04222891A (en) | Non-asbestos friction material | |
| EP1298345A1 (en) | Non-asbestos friction material | |
| JP2886652B2 (en) | Non-asbestos friction material | |
| JPH08326805A (en) | Non-asbestos friction material | |
| JPS63297834A (en) | Friction material | |
| JPH05247445A (en) | Nonasbestos friction material | |
| JPH05247444A (en) | Nonasbestos friction material | |
| JPH0693111A (en) | Asbestos-free friction material | |
| JPS5811580A (en) | Friction material | |
| JPH0989023A (en) | Manufacture of disk brake pad |