JP2838304B2 - Non-asbestos friction material - Google Patents
Non-asbestos friction materialInfo
- Publication number
- JP2838304B2 JP2838304B2 JP2043994A JP4399490A JP2838304B2 JP 2838304 B2 JP2838304 B2 JP 2838304B2 JP 2043994 A JP2043994 A JP 2043994A JP 4399490 A JP4399490 A JP 4399490A JP 2838304 B2 JP2838304 B2 JP 2838304B2
- Authority
- JP
- Japan
- Prior art keywords
- friction
- friction material
- asbestos
- fibers
- fiber
- 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.)
- Expired - Fee Related
Links
- 239000002783 friction material Substances 0.000 title claims description 36
- 239000010425 asbestos Substances 0.000 title claims description 21
- 229910052895 riebeckite Inorganic materials 0.000 title claims description 21
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 20
- 239000004917 carbon fiber Substances 0.000 claims description 20
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 15
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 15
- 230000005484 gravity Effects 0.000 claims description 11
- 239000012783 reinforcing fiber Substances 0.000 claims description 10
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 6
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 3
- 239000003607 modifier Substances 0.000 claims description 3
- 229920001568 phenolic resin Polymers 0.000 claims description 3
- 239000005011 phenolic resin Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000000835 fiber Substances 0.000 description 19
- 229920006231 aramid fiber Polymers 0.000 description 6
- 239000003365 glass fiber Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 229920002972 Acrylic fiber Polymers 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000004760 aramid Substances 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000012784 inorganic fiber Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 244000226021 Anacardium occidentale Species 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 235000020226 cashew nut Nutrition 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Braking Arrangements (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Reinforced Plastic Materials (AREA)
Description
【発明の詳細な説明】 [産業上の利用分野] 本発明は車両、産業機械等のブレーキパット、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
る非石綿系の摩擦材に関するものであり、更に詳しく
は、強度及び摩擦特性に優れ、且つ、対面損傷の少ない
高性能の非石綿系摩擦材に関するものである。The present invention relates to a non-asbestos-based friction material used as a brake pad, a brake lining, a clutch facing and the like of a vehicle, an industrial machine, and the like. The present invention relates to a high-performance non-asbestos-based friction material excellent in strength, friction characteristics, and with little face-to-face damage.
[従来の技術] 従来、摩擦材としては石綿を主成分としたものが多く
用いられていたが、一つには発生の避けることのできな
い石綿の粉塵が人体に対し有毒であるということが指摘
された結果、その使用が規制されつつあるということ
と、もう一つには、車両等の高性能化にともなって、よ
り性能の高い摩擦材が必要となりつつあるということ等
から、石綿系のものよりも高性能で且つ石綿を使用しな
い摩擦材への要求が高まっている。[Prior art] Conventionally, as a friction material, one containing asbestos as a main component has been widely used, but it is pointed out that asbestos dust which cannot be avoided is toxic to the human body. As a result, asbestos-based asbestos-based materials have become more restricted due to the fact that their use is being regulated, and secondly, the need for higher-performance friction materials has increased as vehicles have become more sophisticated. There is an increasing demand for friction materials that are higher in performance and do not use asbestos.
そこで近時、石綿を使用しない摩擦材について数多く
の提案がなされており、それらの多くは、基材として有
機繊維であるアラミド繊維や、ガラス繊維や炭素繊維或
は金属繊維に代表される無機繊維を使用している。In recent years, many proposals have been made for friction materials that do not use asbestos, and most of them are made of aramid fibers, which are organic fibers, or inorganic fibers typified by glass fibers, carbon fibers, or metal fibers. You are using
[発明が解決しようとする問題点] 然しながら、上記のアラミド繊維やガラス繊維或は炭
素繊維、金属繊維を主たる補強繊維として用いた従来の
摩擦材には、種々の問題点があった。[Problems to be Solved by the Invention] However, the conventional friction material using the aramid fiber, glass fiber, carbon fiber, or metal fiber as a main reinforcing fiber has various problems.
即ち、車両等のブレーキパッドを例に挙げて説明すれ
ば、アラミド繊維を用いた摩擦材には、連続的にブレー
キを使用すると、摩擦材の表面温度が上昇し、アラミド
繊維が熱分解して強度や摩擦係数が低下するという問題
点があり、ガラス繊維を用いた摩擦材には、高温時にガ
ラス繊維が脱落して摩耗量が増大するという問題点があ
るのである。又、スチール繊維や銅繊維等の金属繊維を
用いた摩擦材は、耐摩耗性や強度等には優れているもの
の、高温になるに従って摩擦係数即ち効きの程度が異常
に高くなったり、重量がかさんだり、熱伝導率が高くな
るために高温時には発火する可能性があって危険でもあ
り、更に、上記のガラス繊維や金属繊維を用いた摩擦材
は、ローターやドラム等の相手側を損傷したり、研削し
てしまったりするおそれもあった。That is, if a brake pad of a vehicle or the like is described as an example, the friction material using aramid fiber, if a brake is used continuously, the surface temperature of the friction material increases, and the aramid fiber is thermally decomposed. There is a problem that the strength and the coefficient of friction decrease, and a friction material using glass fiber has a problem that the glass fiber falls off at a high temperature and the amount of wear increases. In addition, friction materials using metal fibers such as steel fibers and copper fibers have excellent wear resistance and strength, but the friction coefficient, that is, the degree of effectiveness becomes abnormally high as the temperature increases, and the weight increases. It is dangerous because it may ignite at high temperature due to high thermal conductivity due to high thermal conductivity.Furthermore, the friction material using glass fiber or metal fiber damages the other side such as rotor and drum. Or grinding.
一方、所謂炭素繊維を補強繊維として用いれば、その
高い補強効果及び潤滑性から、耐熱性に優れると共にロ
ーターやドラム等の相手側を損傷したり、研削してしま
ったりするおそれの少ない摩擦材を得ることも可能と考
えられるが、この炭素繊維を、実際にこれらの効果が得
られるほど多量に用いると、前記潤滑効果のため、摩擦
係数が異常に低下するという問題があり、このような炭
素繊維を多く用いた摩擦材は、C/Cコンポジットとして
航空機やレーシングカー等のいわば高速走行用のブレー
キに使用されている以外は、実用化されておらず、とく
に低速時にも頻繁に使用する必要のある自動車等のため
のものとしては、低速時において摩擦係数が非常に低い
ばかりか、摩耗が多いため、適用できないとされてい
た。On the other hand, if so-called carbon fiber is used as the reinforcing fiber, a friction material which is excellent in heat resistance due to its high reinforcing effect and lubricating property and has little risk of damaging or grinding the other side such as a rotor or a drum. Although it is considered possible to obtain such a carbon fiber, if the carbon fiber is used in such a large amount that these effects are actually obtained, there is a problem that the friction coefficient is abnormally lowered due to the lubricating effect. Friction materials using a large amount of fiber are not practically used except as C / C composites, which are used as brakes for high-speed running of aircraft and racing cars, so they must be used frequently especially at low speeds. It is said that this method is not applicable to automobiles having a problem because the coefficient of friction is very low at low speeds and the amount of wear is large.
勿論、上記以外の素材を用いた摩耗材も提供されては
いるが、400℃以上の高温での耐摩耗性等、高温特性が
十分でなかったり、摩擦挙導の安定しないものが多かっ
た。Of course, wear materials using materials other than those described above are also provided, but in many cases, high-temperature characteristics such as wear resistance at a high temperature of 400 ° C. or more are not sufficient, and friction induction is not stable.
本発明は、上記したような従来の非石綿系摩擦材の問
題点を解消し、通常使用温度においては勿論のこと、40
0℃以上の高温においても優れた耐摩耗性及び安定した
摩擦性能を示し、且つ、対面損傷が少なく強度の高い非
石綿系の摩擦材を提供することを目的としてなされたも
のである。The present invention solves the above-mentioned problems of the conventional non-asbestos-based friction material, and, of course, at normal operating temperatures,
It is an object of the present invention to provide a non-asbestos-based friction material which exhibits excellent wear resistance and stable friction performance even at a high temperature of 0 ° C. or higher, and has little face-to-face damage and high strength.
[問題点を解決するための手段] 上記目的を達成するために本発明が採用した構成は、
石綿以外の補強繊維とフェノール樹脂等の結合剤及び硫
酸バリウム等の摩擦調整剤とを含む摩擦材において、前
記補強繊維の一部として比重が1.60〜1.74のポリアクリ
ロニトリル系特殊炭素繊維を含むことを特徴とするもの
である。[Means for Solving the Problems] The configuration adopted by the present invention to achieve the above object is as follows.
In a friction material containing a reinforcing fiber other than asbestos and a binder such as a phenolic resin and a friction modifier such as barium sulfate, a specific gravity of a specific acrylonitrile-based carbon fiber having a specific gravity of 1.60 to 1.74 is included as a part of the reinforcing fiber. It is a feature.
以下に本発明を詳細に説明する。 Hereinafter, the present invention will be described in detail.
本発明において使用する石綿以外の補強繊維として
は、例えば、アラミド繊維、アクリル繊維、フェノール
繊維、PVA繊維セルロース繊維等の有機繊維、又は、ガ
ラス繊維、セラミック繊維、炭素繊維等の無機繊維、更
に、スチール繊維、銅繊維、青銅繊維等の金属繊維のう
ちの1種又は2種以上の繊維を含んだ混合物が用いら
れ、これらは従来の摩擦材に用いられていたものと同じ
である。As the reinforcing fibers other than asbestos used in the present invention, for example, aramid fibers, acrylic fibers, phenol fibers, organic fibers such as PVA cellulose fibers, or glass fibers, ceramic fibers, inorganic fibers such as carbon fibers, further, A mixture containing one or more fibers of metal fibers such as steel fibers, copper fibers, and bronze fibers is used, and these are the same as those used in conventional friction materials.
而して、本発明の特徴は、上記補強繊維の一部として
ポリアクリロニトリル(以下、PANと略す)系特殊炭素
繊維を含むことである。Thus, a feature of the present invention is that polyacrylonitrile (hereinafter abbreviated as PAN) -based special carbon fibers are included as a part of the reinforcing fibers.
ここで、本発明で使用する「PAN系特殊炭素繊維」と
は、紡糸したPANを、前処理として空気中で200〜300℃
で焼き、耐炎化して得た酸化アクリル繊維を、更に不活
性ガス雰囲気中で800〜1,000℃で焼成、炭素化して比重
を1.60〜1.74に調整したものをいう。Here, the “PAN-based special carbon fiber” used in the present invention means that spun PAN is pretreated at 200 to 300 ° C. in air.
Acrylic fiber obtained by baking and flame-proofing at 800 to 1,000 ° C. in an inert gas atmosphere and carbonized to adjust the specific gravity to 1.60 to 1.74.
このPAN系炭素繊維において、比重は炭素化率を示す
ものであり、本発明ではこのPAN系特殊炭素繊維を、摩
擦材としての全量に対して好ましくは0.5乃至70体積%
含有する。In the PAN-based carbon fiber, the specific gravity indicates a carbonization rate. In the present invention, the PAN-based special carbon fiber is preferably used in an amount of 0.5 to 70% by volume based on the total amount of the friction material.
contains.
尚、通常のPAN系炭素繊維系は、上記の酸化アクリル
繊維を1,000〜1,500℃の高温で焼成したもので、その比
重は1.75〜1.80である。The ordinary PAN-based carbon fiber-based fiber is obtained by firing the above-mentioned acrylic oxide fiber at a high temperature of 1,000 to 1,500 ° C., and has a specific gravity of 1.75 to 1.80.
一方、結合剤としては、例えば、フェノール樹脂等の
熱硬化性樹脂が、又、摩擦調整剤としては、例えば、カ
シューダスト、硫酸バリウム、炭酸カルシウム等が用い
られ、これらは通常の摩擦材において汎用されているも
のである。On the other hand, as the binder, for example, a thermosetting resin such as a phenolic resin, and as the friction modifier, for example, cashew dust, barium sulfate, calcium carbonate, etc. are used, and these are commonly used in ordinary friction materials. Is what is being done.
[発明の作用及び効果] 以上説明した本発明非石綿系摩擦材は、摩擦材成分の
中の補強繊維としてPAN系特殊炭素繊維を含有するもの
であり、このPAN系特殊炭素繊維は、摩擦材の補強繊維
として使用した場合、通常の高比重PAN系炭素繊維に較
べて摩擦係数をそれほど低下させないため、多量に使用
して補強効果等の優れた効果を得ることができ、それば
かりか、得られた摩擦材は石綿系や他の非石綿系摩擦材
と同等以上の特性を示す優れたものである。[Functions and Effects of the Invention] The non-asbestos-based friction material of the present invention described above contains PAN-based special carbon fiber as a reinforcing fiber in the friction material component. When used as a reinforcing fiber, the friction coefficient does not decrease so much as compared with ordinary high specific gravity PAN-based carbon fiber, so that it can be used in a large amount to obtain excellent effects such as a reinforcing effect. The obtained friction material is an excellent material exhibiting properties equal to or higher than those of asbestos-based and other non-asbestos-based friction materials.
[実施例] 以下に本発明を実施例により更に詳細に説明する。[Examples] Hereinafter, the present invention will be described in more detail with reference to Examples.
実施例 PAN系特殊炭素繊維として、東邦レーヨン製テルメッ
クス(商品名)の比重1.65のものを、表1に示す割合
で、他の成分とミキサーを用いて均一に混合し、その
後、金型中において温度150℃、圧力300Kg/cm2で9分間
圧縮成型し、実施例A〜Fの摩擦材を得た(表中の数字
は体積%を示す)。Example As a PAN-based special carbon fiber, a material having a specific gravity of 1.65 manufactured by Toho Rayon Co., Ltd. (trade name) was uniformly mixed with other components at a ratio shown in Table 1 using a mixer. And compression molding at a temperature of 150 ° C. and a pressure of 300 kg / cm 2 for 9 minutes to obtain the friction materials of Examples A to F (the numbers in the table indicate% by volume).
一方、上記実施例A〜FのPAN系特殊炭素繊維に代
え、通常のPAN系炭素繊維(比重1.79)を使用し、同様
の成分比率としたものを上記と同様に圧縮成型して、表
2に示す比較例a〜fの摩擦材を得た。On the other hand, instead of the PAN special carbon fibers of Examples A to F, ordinary PAN carbon fibers (specific gravity 1.79) were used, and those having the same component ratio were compression-molded in the same manner as described above. Of Comparative Examples a to f shown in FIG.
更に、実施例A〜D及び比較例a〜dに対応する様に
して、石綿、アラミド繊維及び青銅繊維を用いたもの
を、上記と同様に圧縮成型して、表3に示す比較例g〜
jの摩擦材を得た。Further, ascorresponding to Examples A to D and Comparative Examples a to d, those using asbestos, aramid fiber and bronze fiber were compression-molded in the same manner as described above, and Comparative Examples g to
j friction material was obtained.
上記本発明の実施例A〜F及び比較例a〜jの摩擦材
を、JASOのC406(乗用車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方法により摩
擦試験を行なった。又、試験後の摩擦材からサンプルを
切りだし、JASOのC444−78「ブレーキライニング、パッ
ドの物理的性質試験方法」に規定されている剪断試験を
行なった。 The friction materials of Examples A to F and Comparative Examples a to j of the present invention were subjected to a friction test according to the friction performance test method specified in JASO's C406 (Test Method for Dynamometer of Passenger Car Brake Device). A sample was cut out from the friction material after the test, and a shear test specified in JASO's C444-78 “Test method for physical properties of brake lining and pad” was performed.
実施例及び比較例の摩擦性能試験の中で、フェード試
験中の摩擦材の表面温度が100℃、200℃、300℃、400℃
及び450℃のときの摩擦係数、試験後の摩擦材の摩耗量
と対面の状態更に剪断試験の結果を表4〜6に示す。In the friction performance test of Examples and Comparative Examples, the surface temperature of the friction material during the fade test is 100 ° C, 200 ° C, 300 ° C, 400 ° C
Tables 4 to 6 show the friction coefficient at 450 ° C., the wear amount of the friction material after the test, the state of the facing surface, and the results of the shear test.
尚、PAN系特殊炭素繊維として、前記比重1.65のもの
以外に、比重1.68、1.70及び1.72のものを用いて、同様
に摩擦材を得ると共に試験を行なったところ、以下の表
4〜6とほぼ同様の結果が得られた。In addition, as a PAN-based special carbon fiber, in addition to the specific gravity 1.65, using specific gravity 1.68, 1.70 and 1.72, similarly obtained a friction material and conducted a test, almost the same as Tables 4-6 below Similar results were obtained.
本発明は以上のとおりであるから、車両、産業機械等
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非石綿系の摩擦材として優
れている。 As described above, the present invention is excellent as a non-asbestos-based friction material used as a brake pad, a brake lining, a clutch facing and the like of a vehicle, an industrial machine and the like.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6,DB名) C08J 5/14 F16D 69/02 C09K 3/14──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) C08J 5/14 F16D 69/02 C09K 3/14
Claims (2)
結合剤及び硫酸バリウム等の摩擦調整剤とを含む摩擦材
において、前記補強繊維の一部として比重が1.60〜1.74
のポリアクリロニトリル系特殊炭素繊維を含むことを特
徴とする非石綿系摩擦剤。1. A friction material containing reinforcing fibers other than asbestos, a binder such as phenolic resin, and a friction modifier such as barium sulfate, wherein the specific gravity is 1.60 to 1.74 as a part of the reinforcing fibers.
A non-asbestos-based friction agent comprising the polyacrylonitrile-based special carbon fiber of claim 1.
が、摩擦材としての全量に対して0.5〜70体積%である
請求項1記載の非石綿系摩擦材。2. The non-asbestos-based friction material according to claim 1, wherein the amount of the polyacrylonitrile-based special carbon fiber is 0.5 to 70% by volume based on the total amount of the friction material.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2043994A JP2838304B2 (en) | 1990-02-23 | 1990-02-23 | Non-asbestos friction material |
GB9103409A GB2241246B (en) | 1990-02-23 | 1991-02-19 | Non-asbestos type friction material |
DE4105308A DE4105308A1 (en) | 1990-02-23 | 1991-02-20 | ASBEST FREE FRICTION MATERIAL |
KR1019910002960A KR0162242B1 (en) | 1990-02-23 | 1991-02-23 | Non-asbestos friction material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2043994A JP2838304B2 (en) | 1990-02-23 | 1990-02-23 | Non-asbestos friction material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03247628A JPH03247628A (en) | 1991-11-05 |
JP2838304B2 true JP2838304B2 (en) | 1998-12-16 |
Family
ID=12679273
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2043994A Expired - Fee Related JP2838304B2 (en) | 1990-02-23 | 1990-02-23 | Non-asbestos friction material |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP2838304B2 (en) |
KR (1) | KR0162242B1 (en) |
DE (1) | DE4105308A1 (en) |
GB (1) | GB2241246B (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05239442A (en) * | 1992-02-28 | 1993-09-17 | Nisshinbo Ind Inc | Friction material composition and its production |
DE4243516A1 (en) * | 1992-12-22 | 1994-06-23 | Teves Gmbh Alfred | Brake pads for disc brakes with aluminum brake discs |
US6001750A (en) * | 1993-08-04 | 1999-12-14 | Borg-Warner Automotive, Inc. | Fibrous lining material comprising a primary layer having less fibrillated aramid fibers, carbon fibers, carbon particles and a secondary layer comprising carbon particles |
US5998307A (en) * | 1993-08-04 | 1999-12-07 | Borg-Warner Autotive, Inc. | Fibrous lining material comprising a primary layer having less fibrillated aramid fibers and synthetic graphite and a secondary layer comprising carbon particles |
US5856244A (en) * | 1993-08-04 | 1999-01-05 | Borg-Warner Automotive, Inc. | Carbon deposit friction lining material |
US5508109A (en) * | 1993-10-06 | 1996-04-16 | Avco Corporation | Fiber blend for low cost, asbestos free friction material |
DE4340017A1 (en) * | 1993-11-24 | 1995-06-01 | Textar Gmbh | Friction lining mixture for brake and clutch linings |
US5573579A (en) * | 1994-03-17 | 1996-11-12 | Osaka Gas Company, Ltd. | Method for producing friction material |
CA2184342A1 (en) * | 1995-09-28 | 1997-03-29 | Robert C. Lam | Fibrous lining material comprising a less fibrillated aramid and synthetic graphite |
FR2858672B1 (en) * | 2003-08-07 | 2006-10-13 | Valeo Materiaux Friction | FRICTION TRIM AND METHOD FOR MANUFACTURING SUCH FRICTION TRIM |
US8021744B2 (en) | 2004-06-18 | 2011-09-20 | Borgwarner Inc. | Fully fibrous structure friction material |
US7429418B2 (en) | 2004-07-26 | 2008-09-30 | Borgwarner, Inc. | Porous friction material comprising nanoparticles of friction modifying material |
US8603614B2 (en) | 2004-07-26 | 2013-12-10 | Borgwarner Inc. | Porous friction material with nanoparticles of friction modifying material |
JP5584392B2 (en) * | 2007-12-19 | 2014-09-03 | 三菱電機株式会社 | Method for manufacturing friction member |
DE102008013907B4 (en) | 2008-03-12 | 2016-03-10 | Borgwarner Inc. | Frictionally-locking device with at least one friction plate |
DE102017115877A1 (en) | 2017-07-14 | 2019-01-17 | Schaeffler Technologies AG & Co. KG | friction lining |
CN112555308A (en) * | 2020-11-13 | 2021-03-26 | 安徽清水湖新材料技术有限公司 | Friction material with reduced inertia and friction lining |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2027724B (en) * | 1978-07-07 | 1982-11-03 | Nisshin Spinning | Brake lining material |
US4400434A (en) * | 1981-11-18 | 1983-08-23 | Raymark Industries, Inc. | Fluoroelastomer composite friction material |
JPS608536A (en) * | 1983-06-27 | 1985-01-17 | Toho Rayon Co Ltd | Carbon brake and manufacture thereof |
JPS62255631A (en) * | 1986-04-25 | 1987-11-07 | Toyota Motor Corp | Frictional member |
JPH073255B2 (en) * | 1986-11-17 | 1995-01-18 | 株式会社曙ブレ−キ中央技術研究所 | Brake friction material |
-
1990
- 1990-02-23 JP JP2043994A patent/JP2838304B2/en not_active Expired - Fee Related
-
1991
- 1991-02-19 GB GB9103409A patent/GB2241246B/en not_active Expired - Fee Related
- 1991-02-20 DE DE4105308A patent/DE4105308A1/en not_active Ceased
- 1991-02-23 KR KR1019910002960A patent/KR0162242B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
GB2241246A (en) | 1991-08-28 |
KR910021461A (en) | 1991-12-20 |
DE4105308A1 (en) | 1991-09-05 |
KR0162242B1 (en) | 1999-01-15 |
GB2241246B (en) | 1993-03-24 |
GB9103409D0 (en) | 1991-04-03 |
JPH03247628A (en) | 1991-11-05 |
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