JP2548713B2 - Brake friction material - Google Patents
Brake friction materialInfo
- Publication number
- JP2548713B2 JP2548713B2 JP62009556A JP955687A JP2548713B2 JP 2548713 B2 JP2548713 B2 JP 2548713B2 JP 62009556 A JP62009556 A JP 62009556A JP 955687 A JP955687 A JP 955687A JP 2548713 B2 JP2548713 B2 JP 2548713B2
- Authority
- JP
- Japan
- Prior art keywords
- friction material
- brake friction
- resin
- parts
- weight
- 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 - Lifetime
Links
- 239000002783 friction material Substances 0.000 title claims description 33
- 239000011347 resin Substances 0.000 claims description 18
- 229920005989 resin Polymers 0.000 claims description 18
- 239000011230 binding agent Substances 0.000 claims description 12
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 9
- 239000000314 lubricant Substances 0.000 claims description 8
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 claims description 8
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 5
- BWVAOONFBYYRHY-UHFFFAOYSA-N [4-(hydroxymethyl)phenyl]methanol Chemical compound OCC1=CC=C(CO)C=C1 BWVAOONFBYYRHY-UHFFFAOYSA-N 0.000 claims description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 10
- 239000005011 phenolic resin Substances 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 239000010439 graphite Substances 0.000 description 7
- 229910002804 graphite Inorganic materials 0.000 description 7
- 239000010425 asbestos Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 229910052895 riebeckite Inorganic materials 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 4
- 239000000920 calcium hydroxide Substances 0.000 description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 3
- 244000226021 Anacardium occidentale Species 0.000 description 3
- 235000020226 cashew nut Nutrition 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 229920001568 phenolic resin Polymers 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000004640 Melamine resin Substances 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000007974 melamines Chemical class 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Description
【発明の詳細な説明】 「産業上の利用分野」 この発明は、自動車等のブレーキ摩擦材に係わり、詳
しくは高温下で安定した制動力が得られるブレーキ摩擦
材に関する。TECHNICAL FIELD The present invention relates to a brake friction material for automobiles and the like, and more particularly to a brake friction material that can obtain a stable braking force at high temperatures.
「従来の技術」 従来より自動車等のブレーキ摩擦材として、基材にア
スベストを用い、潤滑材に黒鉛を、また充填材に硫酸バ
リウムを用いて混合し作製したアスベスト系ブレーキ摩
擦材や、基材に鋼繊維を、潤滑材に黒鉛を、充填材に硫
酸バリウムをそれぞれ用いて混合し作製したセミメタリ
ック系ブレーキ摩擦材が知られている。そして、これら
のブレーキ摩擦材では、いずれも結合材としてフェノー
ル樹脂、メラミン樹脂、フェノール変性メラミン樹脂、
メラミン変性フェノール樹脂、カシュー樹脂、カシュー
変性フェノール樹脂、ポリイミド樹脂等の熱硬化性樹脂
が用いられている。"Conventional technology" Asbestos-based brake friction materials and base materials that have been conventionally produced by mixing asbestos as a base material, graphite as a lubricant material, and barium sulfate as a filler material as a brake friction material for automobiles and the like. There is known a semi-metallic brake friction material prepared by mixing steel fiber, graphite as a lubricant, and barium sulfate as a filler. And, in these brake friction materials, as a binding material, phenol resin, melamine resin, phenol-modified melamine resin,
Thermosetting resins such as melamine-modified phenol resin, cashew resin, cashew-modified phenol resin, and polyimide resin are used.
「発明が解決しようとする問題点」 しかしながら、上記のブレーキ摩擦材にあっては、結
合材としてフェノール樹脂等が用いられていることか
ら、以下に述べるような不都合がある。[Problems to be Solved by the Invention] However, in the above-mentioned brake friction material, since a phenol resin or the like is used as a binding material, there are the following inconveniences.
結合材に用いられた樹脂において、例えばフェノール
樹脂は、下記（１）式に示すように、‐OH、-CH2-など
の官能基や、-CH2OH基を有した構造からなっている。In the resin used as the binder, for example, a phenol resin has a structure having a functional group such as —OH or —CH 2 — or a —CH 2 OH group, as shown in the following formula (1). .
（ノボラック型フェノール樹脂） そして、このような構造のフェノール樹脂は、上記官
能基などにおける結合が他の部分に比べて弱いため高温
時に分解して切断され易く、また分解した際にはメタン
等の可燃性ガスや炭酸ガス、水（水蒸気）などを発生す
る。 (Novolak type phenolic resin) Since the phenolic resin having such a structure has a weaker bond in the above-mentioned functional groups as compared with other portions, it is easily decomposed and broken at high temperature, and when decomposed, methane or the like is decomposed. Generates flammable gas, carbon dioxide, water (water vapor), etc.
ところで、上記のブレーキ摩擦材は、自動車の降坂時
などで連続してブレーキが使用された際に、その表面温
度が500〜800℃程度まで上昇するため、上記の結合材が
熱分解し易くなり、よってブレーキ摩擦材としての機能
が損なわれるという恐れを生じる。By the way, since the surface temperature of the above-mentioned brake friction material rises up to about 500 to 800 ° C when the brake is continuously used at the time of downhill of an automobile, the above-mentioned binder is easily decomposed by heat. Therefore, there is a fear that the function as the brake friction material is impaired.
「問題点を解決するための手段」 そこでこの発明のブレーキ摩擦材では、結合材に縮合
多環芳香族炭化水素からなる樹脂を用いることにより、
上記問題点を解決した。"Means for Solving Problems" Therefore, in the brake friction material of the present invention, by using a resin composed of a condensed polycyclic aromatic hydrocarbon as a binder,
The above problems were solved.
この発明のブレーキ摩擦材において、基材にはアスベ
ストあるいは鋼繊維などが用いられる。また、潤滑材に
は黒鉛などが、充填材には硫酸バリウムなどが用いられ
る。In the brake friction material of the present invention, asbestos or steel fiber is used as the base material. Further, graphite or the like is used as the lubricant, and barium sulfate or the like is used as the filler.
結合材には、縮合多環芳香族炭化水素からなる樹脂が
用いられ、この縮合多環芳香族炭化水素としては、例え
ば下記（２）式に示すような構造を有するピレン/P-キ
シレングリコール系樹脂（以下、ピレン/PXG系樹脂と略
称する）が好適に用いられる。A resin made of a condensed polycyclic aromatic hydrocarbon is used as the binder, and as the condensed polycyclic aromatic hydrocarbon, for example, a pyrene / P-xylene glycol-based resin having a structure represented by the following formula (2) is used. A resin (hereinafter abbreviated as pyrene / PXG resin) is preferably used.
このようなブレーキ摩擦材を作製するには、まず上記
基材の所定量に潤滑材、充填材、結合材などを所定量加
え、ヘンシェルミキサなどの混合機を用いて混合し、次
に常温下で200〜400Kg/cm2程度で加圧して予備成形を行
い、次いで加熱プレス等を用いて100〜200℃程度で加熱
し、同時に400〜600Kg/cm2程度で加圧して成形する。そ
の後、アフターキュアとして常圧下で150〜250℃程度で
加熱し、硬化させてブレーキ摩擦材を得る。 To make such a brake friction material, first add a predetermined amount of lubricant, filler, binder, etc. to the predetermined amount of the base material, mix using a mixer such as a Henschel mixer, and then at room temperature. To preform by pressurizing at about 200 to 400 Kg / cm 2 , and then heating at about 100 to 200 ° C. using a heating press or the like, and at the same time pressurizing at about 400 to 600 Kg / cm 2 for molding. After that, as after-cure, it is heated at about 150 to 250 ° C. under normal pressure and cured to obtain a brake friction material.
このようなブレーキ摩擦材にあっては、結合材が上記
‐OH、-CH2-、-CH2OHなどの基をほとんど（あるいは全
く）含まない、熱的、化学的に安定なピレン/PXG系樹脂
などからなっているため、自動車の降坂時などにおいて
連続してブレーキが使用され、これによってこのブレー
キ摩擦材の表面温度が上昇しても、結合材が熱分解して
可燃性ガス等を発生することがなく、よってこれら可燃
性ガス等の発生に起因するフェード現象の発生や可燃性
ガスの発火といった不都合を確実に防止することができ
る。In such a brake friction material, the binder is a thermally and chemically stable pyrene / PXG containing almost no (or no) groups such as -OH, -CH 2- , -CH 2 OH. Because it is made of resin, the brake is continuously used when the vehicle is downhill, and even if the surface temperature of the brake friction material rises, the binder is thermally decomposed and combustible gas etc. Therefore, it is possible to reliably prevent inconveniences such as the occurrence of a fade phenomenon and the ignition of the flammable gas due to the generation of the flammable gas and the like.
「実施例」 以下、この発明を実施例によりさらに具体的に説明す
る。[Examples] Hereinafter, the present invention will be described in more detail with reference to Examples.
この発明のブレーキ摩擦材として、アスベスト430重
量部にピレン/PXG系樹脂を170重量部、水酸化カルシウ
ムを250重量部、カシューダストを100重量部、銅粉を50
重量部配合し、ヘンシェルミキサにより混合した後、常
温にて約300Kg/cm2で加圧して予備成形し、さらに加熱
プレスにより約120℃の温度にて約500Kg/cm2で加圧して
成形硬化させ、その後常圧にて約200℃で１時間加熱
し、硬化させてブレーキ摩擦材を作製し、これを実施例
１とした。また、鋼繊維500重量部にピレン/PXG系樹脂
を150重量部、黒鉛を150重量部、硫酸バリウムを150重
量部、水酸化カルシウムを50重量部、アルミナ粉末を１
重量部配合し、ヘンシェルミキサにより混合した後、常
温にて約300Kg/cm2で加圧して予備成形し、さらに加熱
プレスにより約120℃の温度にて約500Kg/cm2で加圧して
成形硬化させ、その後常圧にて約200℃で１時間加熱
し、硬化させてブレーキ摩擦材を作製し、これを実施例
２とした。As the brake friction material of the present invention, 430 parts by weight of asbestos, 170 parts by weight of pyrene / PXG resin, 250 parts by weight of calcium hydroxide, 100 parts by weight of cashew dust, 50 parts of copper powder.
Parts were blended, followed by mixing with a Henschel mixer, and preforming pressurized with about 300 Kg / cm 2 at room temperature, the molded cured by further heat-pressing at a temperature of about 120 ° C. under pressure of about 500 Kg / cm 2 Then, it was heated at about 200 ° C. for 1 hour under normal pressure and cured to prepare a brake friction material, which was referred to as Example 1. In addition, 150 parts by weight of pyrene / PXG resin, 150 parts by weight of graphite, 150 parts by weight of barium sulfate, 50 parts by weight of calcium hydroxide, 1 part of alumina powder to 500 parts by weight of steel fiber.
Parts were blended, followed by mixing with a Henschel mixer, and preforming pressurized with about 300 Kg / cm 2 at room temperature, the molded cured by further heat-pressing at a temperature of about 120 ° C. under pressure of about 500 Kg / cm 2 Then, it was heated at about 200 ° C. for 1 hour under normal pressure and cured to prepare a brake friction material, which was referred to as Example 2.
さらに、上記実施例１、２のと比較のため、アスベス
ト430重量部にフェノール樹脂を170重量部、水酸化カル
シウム250重量部、カシューダストを100重量部、銅粉を
50重量部配合し、ヘンシェルミキサにより混合した後、
常温にて約300Kg/cm2で加圧して予備成形し、さらに加
熱プレスにより約160℃の温度にて約500Kg/cm2で加圧し
て成形硬化させ、その後常圧にて約230℃で３時間加熱
し、硬化させて従来からあるブレーキ摩擦材を作製し、
これを比較例１とした。また、鋼繊維500重量部にフェ
ノール樹脂を150重量部、黒鉛を150重量部、硫酸バリウ
ムを150重量部、水酸化カルシウムを50重量部、アルミ
ナ粉末を１重量部配合し、ヘンシェルミキサにより混合
した後、常温にて約300Kg/cm2で加圧して予備成形し、
さらに加熱プレスにより約160℃の温度にて約500Kg/cm2
で加圧して成形硬化させ、その後常圧にて約230℃で３
時間加熱し、硬化させて従来のブレーキ摩擦材を作製
し、これを比較例２とした。Further, for comparison with Examples 1 and 2, 430 parts by weight of asbestos, 170 parts by weight of phenol resin, 250 parts by weight of calcium hydroxide, 100 parts by weight of cashew dust, and copper powder were added.
After mixing 50 parts by weight and mixing with a Henschel mixer,
Preformed pressurized with about 300 Kg / cm 2 at room temperature, 3 further by heat pressing pressurized with at a temperature of about 160 ° C. to about 500 Kg / cm 2 is molded cured at about 230 ° C. at subsequent normal pressure Heat and cure for hours to produce a conventional brake friction material,
This was designated as Comparative Example 1. Further, 150 parts by weight of phenolic resin, 150 parts by weight of graphite, 150 parts by weight of barium sulfate, 50 parts by weight of calcium hydroxide and 1 part by weight of alumina powder were mixed with 500 parts by weight of steel fiber and mixed by a Henschel mixer. After that, pressurize at about 300 Kg / cm 2 at room temperature to preform,
Furthermore, with a heating press at a temperature of about 160 ° C, about 500 Kg / cm 2
Press to mold and cure, and then at normal pressure at 230 ° C for 3
A conventional brake friction material was produced by heating and curing for a time, which was designated as Comparative Example 2.
このようにして得た実施例１、２および比較例１、２
のフェード時の摩擦係数と発火温度とを「乗用車ブレー
キ装置ダイナモメータ試験（社団法人 自動車技術会
規格 C-406−82）」に準拠して測定し、その結果を次
表に示した。Examples 1 and 2 and Comparative Examples 1 and 2 thus obtained
The friction coefficient and the ignition temperature at the time of the fade of "passenger car brake device dynamometer test (Japan Society of Automotive Engineers
Standard C-406-82) "and the results are shown in the following table.
なお、表中の摩擦係数は、測定値中の最小値を示して
いる。 The friction coefficient in the table indicates the minimum value among the measured values.
上記結果より、本発明の実施例１、２はいずれもフェ
ード時の摩擦係数が比較例１、２より高く、よって過度
のブレーキの使用に際しても良好にブレーキ摩擦材とし
ての機能を果たすことが分かった。また、その発火温度
も比較例１、２に比べてはるかに高く、よってこのブレ
ーキ摩擦材の不測の発火がより確実に防止されることが
分かった。From the above results, it was found that Examples 1 and 2 of the present invention have higher friction coefficients at the time of fading than Comparative Examples 1 and 2, and therefore, they function well as a brake friction material even when excessive braking is used. It was It was also found that the ignition temperature was much higher than those in Comparative Examples 1 and 2, and thus unexpected ignition of the brake friction material was more reliably prevented.
「発明の効果」 以上説明したように、この発明のブレーキ摩擦材は、
結合材に縮合多環芳香族炭化水素からなる樹脂を用いた
ものであるから、高温下においても熱分解によるガスの
発生がほとんどなく、よってこのガスの発生に起因する
摩擦係数の低下がほとんどなく、したがってブレーキ摩
擦材としての機能が十分に保たれる。また、高温下にお
けるガスの発生がほとんどないため、このガスの発火な
どに伴うブレーキ摩擦材の発火の温度が高くなり、よっ
て優れた安全性を得ることができ、またキャリパのピス
トンのダストカバーなどのゴム部材の損傷を防止するこ
とができる。さらに、このブレーキ摩擦材では、従来の
ものに比べて成形温度を低くすることができるため、成
形が容易になり、また成形品の温度分布も安定するた
め、より品質の高い製品を得ることができる。そしてさ
らに、このブレーキ摩擦材では、結合材に用いた縮合多
環芳香族炭化水素からなる樹脂の炭素含有量が、従来の
ブレーキ摩擦材の結合材に用いた樹脂の炭素含有量に比
べて多いため、潤滑材として用いた黒鉛に近い潤滑性を
示し、よって潤滑材としても作用するため黒鉛の配合を
省くことができ、したがって全体の配合成分が少なくな
ることから製造時の全体の混合均質化が容易になる。ま
た、縮合多環芳香族炭化水素からなる樹脂が潤滑材とし
て作用するため、ブレーキ摩擦材の摩耗量を低減するこ
とができる。"Effects of the Invention" As described above, the brake friction material of the present invention is
Since a resin made of condensed polycyclic aromatic hydrocarbons is used as the binder, there is almost no generation of gas due to thermal decomposition even at high temperatures, so there is almost no decrease in the friction coefficient due to the generation of this gas. Therefore, the function as a brake friction material is sufficiently maintained. Also, since there is almost no generation of gas at high temperatures, the temperature of ignition of the brake friction material accompanying the ignition of this gas becomes high, and therefore excellent safety can be obtained, and the dust cover of the caliper piston, etc. It is possible to prevent the rubber member from being damaged. Furthermore, with this brake friction material, the molding temperature can be lowered compared to the conventional one, so molding is easier and the temperature distribution of the molded product is stable, so it is possible to obtain higher quality products. it can. Further, in this brake friction material, the carbon content of the resin composed of the condensed polycyclic aromatic hydrocarbon used for the binder is higher than that of the resin used for the binder of the conventional brake friction material. Therefore, it shows lubricity close to that of graphite used as a lubricant, and therefore it can also act as a lubricant, so that the compounding of graphite can be omitted, and therefore the overall compounding components are reduced, so that the entire mixture is homogenized during production. Will be easier. Further, since the resin composed of condensed polycyclic aromatic hydrocarbon acts as a lubricant, it is possible to reduce the amount of wear of the brake friction material.
Claims (2)
してなるブレーキ摩擦材において、 上記結合材に縮合多環芳香族炭化水素からなる樹脂を用
いたことを特徴とするブレーキ摩擦材。1. A brake friction material comprising a base material mixed with a lubricant, a filler, a binder, etc., wherein the binder comprises a resin composed of condensed polycyclic aromatic hydrocarbons. Friction material.
としてピレン/P−キシレングリコール系樹脂を用いたこ
とを特徴とする特許請求の範囲第１項記載のブレーキ摩
擦材。2. The brake friction material according to claim 1, wherein a pyrene / P-xylene glycol resin is used as the resin composed of the condensed polycyclic aromatic hydrocarbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62009556A JP2548713B2 (en) | 1987-01-19 | 1987-01-19 | Brake friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62009556A JP2548713B2 (en) | 1987-01-19 | 1987-01-19 | Brake friction material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63180735A JPS63180735A (en) | 1988-07-25 |
| JP2548713B2 true JP2548713B2 (en) | 1996-10-30 |
Family
ID=11723554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62009556A Expired - Lifetime JP2548713B2 (en) | 1987-01-19 | 1987-01-19 | Brake friction material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2548713B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7051460B2 (en) | 2003-01-10 | 2006-05-30 | Mizuno Corporation | Light weight shoes |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02146327A (en) * | 1988-11-29 | 1990-06-05 | Akebono Brake Res & Dev Center Ltd | Friction material |
| CN118417294A (en) * | 2023-01-31 | 2024-08-02 | 中国石油化工股份有限公司 | A method for stabilizing a barium-containing adsorbent |
-
1987
- 1987-01-19 JP JP62009556A patent/JP2548713B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7051460B2 (en) | 2003-01-10 | 2006-05-30 | Mizuno Corporation | Light weight shoes |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63180735A (en) | 1988-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4268657A (en) | Friction element containing phenol-formaldehyde-alkylphenol binder | |
| EP0959262A1 (en) | Non-asbestos disc brake pad for automobiles | |
| JPS6317872B2 (en) | ||
| EP0149726B1 (en) | Friction material for brake linings and the like | |
| JP2548713B2 (en) | Brake friction material | |
| US4364997A (en) | Clutch facing material and method for manufacturing the same | |
| KR920000054B1 (en) | Friction brake material | |
| JP3458976B2 (en) | Friction material | |
| CN112343949B (en) | High-heat-conductivity and low-thermal-expansion brake lining and preparation method thereof | |
| US6080230A (en) | Friction material composition | |
| JP5011557B2 (en) | Composite friction modifier for friction material | |
| US3842031A (en) | Friction material | |
| JPH07190115A (en) | Binder composition for friction material | |
| JP3797464B2 (en) | Friction material composition and friction material using friction material composition | |
| JP2601652B2 (en) | Friction material for brake | |
| JPS6312098B2 (en) | ||
| JPH05320622A (en) | Friction material | |
| JP3838400B2 (en) | Friction material composition and friction material using friction material composition | |
| JPH0343501B2 (en) | ||
| JPS63297834A (en) | Friction material | |
| JPH03247629A (en) | Friction material composition and production of friction material using the same composition | |
| JP2661700B2 (en) | Brake friction material | |
| US3723382A (en) | Friction materials | |
| JPH03239784A (en) | Friction material composition and manufacture of friction material therefrom | |
| Jacko | Thermal analysis of friction materials |