JPH069946A - Friction material - Google Patents
Friction materialInfo
- Publication number
- JPH069946A JPH069946A JP16951292A JP16951292A JPH069946A JP H069946 A JPH069946 A JP H069946A JP 16951292 A JP16951292 A JP 16951292A JP 16951292 A JP16951292 A JP 16951292A JP H069946 A JPH069946 A JP H069946A
- Authority
- JP
- Japan
- Prior art keywords
- friction material
- friction
- cashew dust
- average particle
- binder
- 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.)
- Granted
Links
Landscapes
- Braking Arrangements (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車、産業用車両な
どのブレーキ、クラッチフェーシングに使用される摩擦
材に関し、特に低周波ノイズの発生率を低減した摩擦材
に係るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a friction material used for brakes and clutch facings of automobiles, industrial vehicles and the like, and more particularly to a friction material having a reduced low frequency noise generation rate.
【０００２】[0002]
【従来の技術】従来、車両用のブレーキパッド等に使用
される摩擦材としては、制動力が大きくて耐摩耗性が良
好であること、温度圧力等の変化による制動力の変化が
小さく安定していること、水や油等に侵されず材料強度
が大きいことなどが求められている。2. Description of the Related Art Conventionally, as a friction material used for a vehicle brake pad or the like, a braking force is large and wear resistance is good, and a change in the braking force due to a change in temperature and pressure is small and stable. It is required that the material has high strength without being attacked by water or oil.
【０００３】上記特性を比較的満足させる摩擦材とし
て、繊維基材、結合剤、固体潤滑剤や有機、無機の添加
剤とから構成されたものが一般的に使用されている。こ
のような摩擦材としてのブレーキパッドを用いたブレー
キ装置においては、ディスクブレーキの振動によりブレ
ーキ鳴きといわれる５０００〜１５０００Ｈｚ程度の高
周波ノイズや、グロー音などと称する１００〜１０００
Ｈｚ程度の低周波ノイズなどの騒音が発生する場合があ
る。As a friction material relatively satisfying the above characteristics, a friction material composed of a fiber base material, a binder, a solid lubricant and organic or inorganic additives is generally used. In a brake device using such a brake pad as a friction material, high-frequency noise of about 5000 to 15000 Hz, which is said to be brake squeal due to vibration of a disc brake, and 100 to 1000 which is called glow noise or the like.
Noise such as low frequency noise of about Hz may occur.
【０００４】[0004]
【発明が解決しようとする課題】上記低周波ノイズが発
生するのは、相手材としてのロータ表面に摩擦材の摩耗
成分や分解物が付着して被着膜が形成され、この被着膜
に起因してスティックスリップ、つまり摩擦材と相手材
との間における摩擦係数の瞬間的な変動が発生しやすく
なるためと考えられる。The low-frequency noise is generated because the wear component or decomposition product of the friction material adheres to the surface of the rotor as the mating material to form the adhered film, and the adhered film is formed. It is considered that this is because stick slip, that is, instantaneous variation of the friction coefficient between the friction material and the mating material is likely to occur.
【０００５】このような低周波ノイズを抑える手段とし
ては、硬度の高いアブレッシブ剤を多量に添加して被着
膜を取り除く手段が考えられる。しかし、この手段では
相手材としてのロータを著しく摩耗させるなど、摩擦特
性が低下するという欠点がある。また、上記スティック
スリップは、摩擦材の静止摩擦係数が大きく動摩擦係数
が小さいほど、つまり静止摩擦係数と動摩擦係数との差
が大きいほど起こりやすいと考えられている。このた
め、鱗片状（マイカ状）無機物を添加することにより、
摩擦材の静止摩擦係数を小さくしてスティックスリップ
の発生を抑える手段も考えられる。しかしこの手段にお
いても、スティックスリップの発生を十分に抑えるため
には鱗片状無機物の添加量を多くしなければならず、こ
の場合摩擦材の耐摩耗性が低下するなど摩擦特性が低下
するという欠点がある。As a means for suppressing such low frequency noise, a means for removing a deposited film by adding a large amount of an abrasive having high hardness can be considered. However, this method has a drawback in that friction characteristics are deteriorated, for example, the rotor as a mating material is significantly worn. It is considered that the stick-slip is more likely to occur as the static friction coefficient of the friction material is larger and the dynamic friction coefficient is smaller, that is, the difference between the static friction coefficient and the dynamic friction coefficient is larger. Therefore, by adding a scale-like (mica-like) inorganic substance,
A means for suppressing the occurrence of stick-slip by reducing the static friction coefficient of the friction material is also conceivable. However, even in this method, in order to sufficiently suppress the occurrence of stick-slip, it is necessary to increase the addition amount of the scale-like inorganic substance, and in this case, the friction characteristics such as the abrasion resistance of the friction material are deteriorated. There is.
【０００６】本発明は上記の事情に鑑みてなされたもの
で、摩擦特性が十分に確保されつつ、低周波ノイズの発
生が抑制された摩擦材を提供することを目的とする。The present invention has been made in view of the above circumstances, and an object thereof is to provide a friction material in which generation of low-frequency noise is suppressed while sufficiently ensuring friction characteristics.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決する本発
明の摩擦材は、繊維基材、結合剤及び添加剤の混合物を
成形してなる摩擦材であって、鱗片状無機物を２〜４０
重量％と、平均粒子径が２５０μｍ以下のカシューダス
トとが含まれていることを特徴とする。この摩擦材は、
繊維基材に添加材と結合剤とが混合され、成形されて形
成されている。そして各種の添加剤が繊維基材中に分散
保持され結合剤で硬化されて一体化した成形体として構
成されている。A friction material of the present invention for solving the above-mentioned problems is a friction material formed by molding a mixture of a fiber base material, a binder and an additive, and contains 2 to 40 scale-like inorganic substances.
%, And cashew dust having an average particle diameter of 250 μm or less. This friction material
The fiber base material is formed by mixing an additive and a binder and molding the mixture. Then, various additives are dispersed and held in the fiber base material and hardened by the binder to form an integrated molded body.
【０００８】繊維基材としては、アラミド繊維、ナイロ
ン繊維、レーヨン繊維、フェノール繊維などの有機繊維
や、ガラス繊維、シリカ繊維、アルミナ繊維、チタン酸
カリウム繊維、ロックウールなどの無機繊維や、銅繊
維、スチール繊維などの金属繊維を用いることができ
る。これらの繊維は、１種又は２種以上用いることがで
きる。Examples of the fiber base material include organic fibers such as aramid fiber, nylon fiber, rayon fiber and phenol fiber, inorganic fibers such as glass fiber, silica fiber, alumina fiber, potassium titanate fiber and rock wool, and copper fiber. Metal fibers such as steel fibers can be used. These fibers may be used alone or in combination of two or more.
【０００９】結合剤としては、フェノール樹脂、メラミ
ン樹脂、エポキシ樹脂等の熱硬化性樹脂を用いることが
できる。中でも、アルキルベンゼン変性フェノール樹
脂、エラストマー変性フェノール樹脂、アミン変性ビス
マレイミド樹脂、ビスマレイミド変性フェノール樹脂、
アルキルベンゼンカシュー変性フェノール樹脂、シリコ
ーン変性フェノール樹脂、ほう酸変性フェノール樹脂等
のストレートフェノール樹脂よりも耐熱性に優れた熱硬
化性樹脂を用いることが好ましい。このような耐熱性に
優れた熱硬化性樹脂を結合剤として用いることにより、
樹脂分解物が生成しにくくなり、スティックスリップの
原因となる被着膜が相手材表面に形成されにくくなる。As the binder, a thermosetting resin such as phenol resin, melamine resin or epoxy resin can be used. Among them, alkylbenzene-modified phenol resin, elastomer-modified phenol resin, amine-modified bismaleimide resin, bismaleimide-modified phenol resin,
It is preferable to use a thermosetting resin having higher heat resistance than a straight phenol resin such as an alkylbenzene cashew-modified phenol resin, a silicone-modified phenol resin, or a boric acid-modified phenol resin. By using a thermosetting resin having excellent heat resistance as a binder,
It becomes difficult for a resin decomposition product to be generated, and it becomes difficult for an adherend film that causes stick-slip to be formed on the surface of the mating material.
【００１０】添加剤として添加される鱗片状無機物とし
ては、マイカ、カオリン、タルク、バーミキュライト等
を挙げることができる。この鱗片状無機物は、摩擦材の
静止摩擦係数を小さくしてスティックスリップの発生を
抑える。鱗片状無機物の含有量が摩擦材全体の２重量％
よりも少ないと、摩擦材の静止摩擦係数を小さくする効
果が十分に得られない。また、鱗片状無機物の含有量が
摩擦材全体の４０重量％よりも多いと、摩擦材の耐摩耗
性が低下するなど摩擦特性に影響がある。Examples of the scale-like inorganic substance added as an additive include mica, kaolin, talc, vermiculite and the like. This scale-like inorganic substance reduces the static friction coefficient of the friction material and suppresses the occurrence of stick-slip. Content of scale-like inorganic material is 2% by weight of the whole friction material
If it is less than the above range, the effect of reducing the static friction coefficient of the friction material cannot be sufficiently obtained. Further, if the content of the scale-like inorganic material is more than 40% by weight of the entire friction material, the abrasion resistance of the friction material is deteriorated, which has an effect on the friction characteristics.
【００１１】添加剤として添加される炭素質としては、
鱗状黒鉛、土状黒鉛の天然黒鉛や、コークス、カーボン
ブラック、カーボンファイバーなどの非晶質炭素を用い
ることができる。ここで、低周波ノイズの原因となる被
着膜の形成を抑えるためには、コークス、カーボンブラ
ック、カーボンファイバーなどの非晶質炭素を用いるこ
とが好ましい。これらの非晶質炭素は、結晶の成長度合
が大きい黒鉛質のものと比べて、相手材摺動面を活性化
しにくいので、相手材表面に摩擦材の摩耗成分や分解物
が付着して被膜状となることを抑制することができる。
しかも、非晶質炭素は、黒鉛とほぼ同程度に潤滑性があ
るので、摩擦材の耐摩耗性を低下させることがなく、摩
擦特性に影響を与えない。なお、結晶の成長度合が小さ
く非晶質の炭素質分が多い土状黒鉛を用いても、これら
の非晶質炭素とほぼ同等の効果を得ることができる。こ
れらの非晶質炭素及び土状黒鉛は、１種又は２種以上用
いることができ、また結晶が発達して非晶質の炭素質分
が極めて少ない鱗状黒鉛と組み合わせても用いることが
できる。The carbonaceous matter added as an additive is
Natural graphite such as scaly graphite and earth graphite, and amorphous carbon such as coke, carbon black, and carbon fiber can be used. Here, it is preferable to use amorphous carbon such as coke, carbon black, or carbon fiber in order to suppress the formation of an adhered film that causes low frequency noise. These amorphous carbons are less likely to activate the sliding surface of the mating material than the graphite material, which has a large degree of crystal growth, and therefore wear components and decomposition products of the friction material adhere to the mating material surface to form a film. It can suppress that it becomes a state.
Moreover, since the amorphous carbon has substantially the same lubricity as graphite, it does not deteriorate the wear resistance of the friction material and does not affect the friction characteristics. Even if the graphite having a small degree of crystal growth and a large amount of amorphous carbonaceous matter is used, it is possible to obtain substantially the same effect as those of the amorphous carbon. These amorphous carbons and earth-like graphite may be used alone or in combination of two or more kinds, and may be used in combination with scaly graphite having an extremely small amount of amorphous carbonaceous matter due to crystal growth.
【００１２】添加剤として添加されるカシューダスト
は、平均粒子径が２５０μｍ以下のものである。平均粒
子径が２５０μｍよりも大きいカシューダストを用いる
と、カシューダストの分解が抑制され、分解中間物が多
くなり、これが低周波ノイズの原因となる被着膜を厚く
形成する。添加剤としては、上記鱗片状無機物、炭素
質、カシューダストの他に、銅粉、硫酸バリウム、消石
灰、ラバーダスト、硫酸バリウム、珪藻土、ドロマイ
ト、炭酸カルシウム、二硫化モリブデン、炭酸マグネシ
ウム、酸化マグネシウム、酸化ジルコニウム、アルミ
ナ、ケイ酸カルシウムなどが挙げられる。Cashew dust added as an additive has an average particle size of 250 μm or less. When cashew dust having an average particle diameter of more than 250 μm is used, the decomposition of cashew dust is suppressed and the amount of decomposition intermediates increases, which forms a thick adherend film that causes low frequency noise. As the additive, in addition to the scale-like inorganic material, carbonaceous material, cashew dust, copper powder, barium sulfate, slaked lime, rubber dust, barium sulfate, diatomaceous earth, dolomite, calcium carbonate, molybdenum disulfide, magnesium carbonate, magnesium oxide, Examples thereof include zirconium oxide, alumina and calcium silicate.
【００１３】本発明の摩擦材は、上記の繊維基材、添加
剤、結合剤の所定量の混合物を、バンバリーミキサー、
ヘンシェルミキサー、ニーダあるいはＶ型ブレンダーな
どで充分均一に混合し、この混合物を型内に充填、押圧
して予備成形を行い、予備成形体を加熱加圧して結合剤
を硬化させた後、熱処理する通常の方法で成形して形成
することができる。The friction material of the present invention comprises a Banbury mixer, a mixture of the above-mentioned fiber base material, additives, and a binder in a predetermined amount.
Henschel mixer, kneader or V-type blender is used to mix the mixture sufficiently evenly, and the mixture is filled into the mold and pressed to perform preforming, and the preform is heated and pressed to cure the binder and then heat treated. It can be formed by molding in a usual method.
【００１４】[0014]
【発明の作用及び効果】本発明の摩擦材は、鱗片状無機
物を特定量含み、かつ平均粒子径が２５０μｍ以下のカ
シューダストが含まれている。この鱗片状無機物は、摩
擦材の静止摩擦係数を小さくし、その結果として摩擦材
の静止摩擦係数と動摩擦係数との差を小さくしてスティ
ックスリップの発生を抑えることができる。また、平均
粒子径の小さいカシューダストを用いることにより、カ
シューダストの分解が速く、分解中間物が少なくなり、
摩擦材の摩耗成分や分解物が付着して被膜状となること
が抑制されるので、スティックスリップの発生を抑制す
ることができる。The friction material of the present invention contains a specific amount of scale-like inorganic material and contains cashew dust having an average particle diameter of 250 μm or less. This scale-like inorganic material can reduce the static friction coefficient of the friction material, and as a result, reduce the difference between the static friction coefficient and the dynamic friction coefficient of the friction material and suppress the occurrence of stick slip. In addition, by using cashew dust with a small average particle size, the cashew dust decomposes quickly and the amount of decomposition intermediates decreases,
Since it is suppressed that the wear component or decomposed material of the friction material adheres to form a film, it is possible to suppress the occurrence of stick slip.
【００１５】このように、本発明の摩擦材では、鱗片状
無機物及び平均粒子径の小さいカシューダストの両者の
働きにより、スティックスリップの発生を抑えることが
できるので、従来のようにスティックスリップの発生を
十分に抑えるために鱗片状無機物を多量に添加する必要
がない。このため、摩擦特性を十分に確保しつつ、低周
波ノイズの発生を効果的に抑制することが可能となる。As described above, in the friction material of the present invention, the occurrence of stick-slip can be suppressed by the action of both the scale-like inorganic substance and the cashew dust having a small average particle size, so that the stick-slip is generated as in the conventional case. It is not necessary to add a large amount of scale-like inorganic substances in order to sufficiently suppress the above. Therefore, it is possible to effectively suppress the generation of low-frequency noise while ensuring sufficient friction characteristics.
【００１６】[0016]
【実施例】以下、実施例により具体的に説明する。本実
施例はブレーキパッドに本発明を適用したものである。 （実施例１）表１にも示すように、アラミド繊維５重量
％、チタン酸カリウムウイスカ１０重量％、ロックウー
ル１０重量％、結合剤としてフェノール樹脂８重量％、
カシューダスト５重量％、炭素質として鱗状黒鉛５重量
％、銅粉末（平均粒径８０μｍ）２０重量％、硫酸バリ
ウム２２重量％、消石灰５重量％、マイカ５重量％、及
びカオリン５重量％の組成の混合物をＶ型ブレンダーで
均一に混合した。なお、カシューダストとして、＋４０
メッシュ：１２％、＋６０メッシュ：３５％、＋１００
メッシュ：３０％、及び−１００メッシュ：２３％の粒
度分布をもち、平均粒子径が約２００μｍのもの（Ａ）
を用いた。EXAMPLES The present invention will be specifically described below with reference to examples. In this embodiment, the present invention is applied to a brake pad. (Example 1) As shown in Table 1, 5% by weight of aramid fiber, 10% by weight of potassium titanate whisker, 10% by weight of rock wool, 8% by weight of phenol resin as a binder,
Composition of 5% by weight of cashew dust, 5% by weight of scaly graphite as carbonaceous material, 20% by weight of copper powder (average particle size 80 μm), 22% by weight of barium sulfate, 5% by weight of slaked lime, 5% by weight of mica, and 5% by weight of kaolin. The mixture was mixed uniformly with a V-type blender. As cashew dust, +40
Mesh: 12%, +60 Mesh: 35%, +100
Mesh having a particle size distribution of 30% and -100 mesh: 23% and an average particle size of about 200 μm (A)
Was used.
【００１７】この混合物を加圧して予備成形した後、金
型中で１６０℃で４００ｋｇ／ｃｍ 2 の圧力で１０分間
熱成形し、２５０℃で１２０分の熱処理をおこなって摩
擦材とした。 （実施例２）カシューダストとして、上記平均粒子径が
約２００μｍのもの（Ａ）の代わりに、＋６０メッシ
ュ：３５％、＋１００メッシュ：４０％、及び−１００
メッシュ：２５％の粒度分布をもち、平均粒子径が約１
５０μｍのもの（Ｂ）を用いること以外は上記実施例１
と同様にして摩擦材を得た。This mixture was pressed and preformed and then gold
400kg / cm at 160 ℃ in mold 2Pressure for 10 minutes
Thermoform and heat treat for 120 minutes at 250 ° C
It was used as an abrasive. (Example 2) As cashew dust, the average particle size is
+60 mesh instead of about 200 μm (A)
: 35%, +100 mesh: 40%, and -100
Mesh: 25% particle size distribution, average particle size is about 1
Example 1 above except that the one having a thickness of 50 μm (B) was used.
A friction material was obtained in the same manner as in.
【００１８】（実施例３）カシューダストとして、上記
平均粒子径が約２００μｍのもの（Ａ）の代わりに、＋
１００メッシュ：２％、及び−１００メッシュ：９８％
の粒度分布をもち、平均粒子径が約１００μｍのもの
（Ｃ）を用いること以外は上記実施例１と同様にして摩
擦材を得た。(Example 3) As cashew dust, in place of (A) having an average particle diameter of about 200 μm, +
100 mesh: 2%, and -100 mesh: 98%
A friction material was obtained in the same manner as in Example 1 except that (C) having a particle size distribution of 1 and an average particle diameter of about 100 μm was used.
【００１９】（実施例４）炭素質として鱗状黒鉛の代わ
りに土状黒鉛を用い、かつ結合剤としてフェノール樹脂
の代わりにアルキルベンゼン変性フェノール樹脂を用い
ること以外は、上記実施例１と同様にして摩擦材を得
た。 （実施例５）炭素質として鱗状黒鉛の代わりにカーボン
ブラックを用い、かつ結合剤としてフェノール樹脂の代
わりにアルキルベンゼン変性フェノール樹脂を用いるこ
と以外は、上記実施例１と同様にして摩擦材を得た。Example 4 Friction was carried out in the same manner as in Example 1 except that earth graphite was used as the carbonaceous material instead of scaly graphite, and alkylbenzene-modified phenol resin was used as the binder instead of phenol resin. I got the material. (Example 5) A friction material was obtained in the same manner as in Example 1 except that carbon black was used as the carbonaceous material instead of scaly graphite, and an alkylbenzene-modified phenol resin was used as the binder instead of the phenol resin. .
【００２０】（比較例）カシューダストとして、上記平
均粒子径が約２００μｍのもの（Ａ）の代わりに、＋２
０メッシュ：４５％、＋４０メッシュ：３５％、＋６０
メッシュ：１５％、＋１００メッシュ：４％、及び−１
００メッシュ：１％の粒度分布をもち、平均粒子径が約
３００μｍのもの（Ｄ）を用いること以外は上記実施例
１と同様にして摩擦材を得た。(Comparative Example) As cashew dust, +2 instead of (A) having an average particle size of about 200 μm.
0 mesh: 45%, +40 mesh: 35%, +60
Mesh: 15%, +100 mesh: 4%, and -1
00 mesh: A friction material was obtained in the same manner as in Example 1 except that (D) having a particle size distribution of 1% and an average particle size of about 300 μm was used.
【００２１】（低周波ノイズ発生率の測定）上記実施例
１〜５の摩擦材及び比較例の摩擦材について、低周波ノ
イズ発生率を調べた。これは、車速：２０〜１００ｋｍ
／ｈ、温度；４０〜２５０℃、減速０．１〜０．８Ｇの
条件で測定し、（低周波ノイズ発生件数／制動回数）×
１００の式で算出した。これらの結果を表１に示す。(Measurement of Low Frequency Noise Occurrence Rate) The low frequency noise occurrence rate of the friction materials of Examples 1 to 5 and the comparative friction material were examined. This is the vehicle speed: 20-100km
/ H, temperature: 40 to 250 ° C., deceleration measured at 0.1 to 0.8 G (number of low frequency noise occurrences / number of braking times) ×
It was calculated by the formula of 100. The results are shown in Table 1.
【００２２】[0022]
【表１】 鱗状無機物としてのマイカ、カオリンをそれぞれ５重量
％含み、かつ平均粒子径が２５０μｍ以下のカシューダ
ストを用いた本実施例１〜５の摩擦材は、いずれも低周
波ノイズ発生率が比較例のものと比べて低減した。これ
により、平均粒子径の小さなカシューダストを用いるこ
とにより、低周波ノイズの発生が抑えられることがわか
る。[Table 1] The friction materials of Examples 1 to 5 each containing 5% by weight of mica and kaolin as scale-like inorganic substances and having an average particle diameter of 250 μm or less were comparative examples with low frequency noise occurrence rates. Reduced compared to. From this, it is understood that the use of cashew dust having a small average particle diameter suppresses the generation of low frequency noise.
【００２３】また実施例１〜３を比較するとわかるよう
に、カシューダストの平均粒子径を小さくするほど、低
周波ノイズの発生抑制に効果がある。さらに、実施例１
と実施例４、５とを比較するとわかるように、炭素質と
して鱗状黒鉛を用いるより、土状黒鉛やコークス、カー
ボンブラック、カーボンファイバーなどの非晶質炭素を
用いる方が、また結合剤としてフェノール樹脂を用いる
よりアルキルベンゼン変性フェノール樹脂等の耐熱性に
優れた熱硬化性樹脂を用いる方が、低周波ノイズの発生
をより効果的に抑えることができる。As can be seen by comparing Examples 1 to 3, the smaller the average particle size of cashew dust, the more effective the suppression of low frequency noise. Furthermore, Example 1
As can be seen by comparing Examples 4 and 5, it is better to use amorphous carbon such as clay-like graphite, coke, carbon black, carbon fiber or the like as a binder than to use scaly graphite as the carbonaceous material. The use of a thermosetting resin having excellent heat resistance, such as an alkylbenzene-modified phenol resin, can more effectively suppress the generation of low-frequency noise than the use of a resin.
Claims (1)
成形してなる摩擦材であって、 鱗片状無機物を２〜４０重量％と、平均粒子径が２５０
μｍ以下のカシューダストとが含まれていることを特徴
とする摩擦材。1. A friction material formed by molding a mixture of a fiber base material, a binder and an additive, wherein the scale-like inorganic material is 2 to 40% by weight and the average particle diameter is 250.
A friction material containing cashew dust of less than μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4169512A JP2807125B2 (en) | 1992-06-26 | 1992-06-26 | Friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4169512A JP2807125B2 (en) | 1992-06-26 | 1992-06-26 | Friction material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH069946A true JPH069946A (en) | 1994-01-18 |
| JP2807125B2 JP2807125B2 (en) | 1998-10-08 |
Family
ID=15887889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4169512A Expired - Fee Related JP2807125B2 (en) | 1992-06-26 | 1992-06-26 | Friction material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2807125B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994027058A1 (en) * | 1993-05-07 | 1994-11-24 | Alliedsignal Inc. | Porous copper powder modified friction material |
| JP2009275063A (en) * | 2008-05-12 | 2009-11-26 | Akebono Brake Ind Co Ltd | Frictional material |
| US20230001845A1 (en) * | 2019-12-26 | 2023-01-05 | Sony Group Corporation | Vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5737187A (en) * | 1980-08-15 | 1982-03-01 | Osaka Gas Co Ltd | Uncutting-off type branched taking off method |
| JPS6366232A (en) * | 1986-09-05 | 1988-03-24 | Aisin Chem Co Ltd | Wet friction material |
| JPH0418483A (en) * | 1990-02-20 | 1992-01-22 | Sumitomo Electric Ind Ltd | Friction material for brake |
| JPH04159385A (en) * | 1990-10-22 | 1992-06-02 | Aisin Chem Co Ltd | Friction material |
-
1992
- 1992-06-26 JP JP4169512A patent/JP2807125B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5737187A (en) * | 1980-08-15 | 1982-03-01 | Osaka Gas Co Ltd | Uncutting-off type branched taking off method |
| JPS6366232A (en) * | 1986-09-05 | 1988-03-24 | Aisin Chem Co Ltd | Wet friction material |
| JPH0418483A (en) * | 1990-02-20 | 1992-01-22 | Sumitomo Electric Ind Ltd | Friction material for brake |
| JPH04159385A (en) * | 1990-10-22 | 1992-06-02 | Aisin Chem Co Ltd | Friction material |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994027058A1 (en) * | 1993-05-07 | 1994-11-24 | Alliedsignal Inc. | Porous copper powder modified friction material |
| AU678009B2 (en) * | 1993-05-07 | 1997-05-15 | Allied-Signal Inc. | Porous copper powder modified friction material |
| JP2009275063A (en) * | 2008-05-12 | 2009-11-26 | Akebono Brake Ind Co Ltd | Frictional material |
| US20230001845A1 (en) * | 2019-12-26 | 2023-01-05 | Sony Group Corporation | Vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2807125B2 (en) | 1998-10-08 |
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