JPH0942336A - Disc pad - Google Patents
Disc padInfo
- Publication number
- JPH0942336A JPH0942336A JP19159095A JP19159095A JPH0942336A JP H0942336 A JPH0942336 A JP H0942336A JP 19159095 A JP19159095 A JP 19159095A JP 19159095 A JP19159095 A JP 19159095A JP H0942336 A JPH0942336 A JP H0942336A
- Authority
- JP
- Japan
- Prior art keywords
- insulator
- friction member
- volume
- disc pad
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 claims abstract description 39
- 239000012212 insulator Substances 0.000 claims abstract description 36
- 239000010425 asbestos Substances 0.000 claims abstract description 9
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 238000005336 cracking Methods 0.000 abstract description 2
- 239000000843 powder Substances 0.000 description 17
- 239000000835 fiber Substances 0.000 description 15
- 238000000465 moulding Methods 0.000 description 15
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229920006231 aramid fiber Polymers 0.000 description 3
- 239000010951 brass Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000005011 phenolic resin Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 244000226021 Anacardium occidentale Species 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
- 125000003118 aryl group Chemical group 0.000 description 2
- 235000020226 cashew nut Nutrition 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000002783 friction material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229920000271 Kevlar® Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 239000001095 magnesium carbonate Substances 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
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車などの制動
部材に適したディスクパッドに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc pad suitable for a braking member of an automobile or the like.
【０００２】[0002]
【従来の技術】従来ディスクブレーキのディスクパッド
の摩擦部材としては、特公昭５６−２５４４８号公報、
特公昭５６−４８５３０号公報等に示されるように石綿
を使用していたが、石綿の有害性のために代替繊維とし
て特公昭５９−４４６２号公報などに示されるようにス
チールファイバーなどのような金属繊維を主成分とした
材料が用いられてきた。2. Description of the Related Art As a friction member for a disc pad of a conventional disc brake, Japanese Patent Publication No. 56-25448 has been proposed.
Asbestos was used as shown in Japanese Examined Patent Publication No. 56-48530, but due to the harmfulness of asbestos, a substitute fiber such as steel fiber is used as shown in Japanese Examined Patent Publication No. 59-4462. Materials based on metal fibers have been used.
【０００３】しかし、金属繊維は熱伝導率が、従来の石
綿より高いため、ブレーキング時の発熱によるベーパロ
ック現象を起し易くなる。このため最近は、摩擦部材と
裏金との間に実公昭６３−３７５３５号公報、実公昭６
３−５０５０３号公報等に示されるように断熱材（以下
インシュレータとする）が介在されたものが提案されて
いる。ところがこの方法においても摩擦部材とインシュ
レータの間に界面が発生し、両者が剥離したり、ディス
クパッド側面に亀裂が発生し易い。この対策として特開
昭５９−５０２３６号公報などに示されるように摩擦部
材とインシュレータとの間に緩衝材を挟む方法がある。However, since the thermal conductivity of metal fibers is higher than that of conventional asbestos, the vapor lock phenomenon easily occurs due to the heat generated during braking. For this reason, these days, the friction member and the back metal have been recently placed in JP-B-63-37535 and JP-B-6.
As disclosed in Japanese Patent Laid-Open No. 3-50503, a heat insulating material (hereinafter referred to as an insulator) is proposed. However, even in this method, an interface is generated between the friction member and the insulator, and both are easily peeled off or a crack is easily generated on the side surface of the disk pad. As a countermeasure against this, there is a method in which a cushioning material is sandwiched between the friction member and the insulator as shown in JP-A-59-50236.
【０００４】特開昭５９−５０２３６号公報に示される
緩衝材は、インシュレータの素材としている石綿を使用
しており、摩擦部材の素材であるスチール繊維と混合す
ることにより、摩擦部材とインシュレータとの境界部分
での剥離を防止している。しかしながら、この方法にお
いても、有害性の石綿を用いており、また摩擦部材とイ
ンシュレータとの剥離及びディスクパッド側面の亀裂を
完全に防止することが出来ない。The cushioning material disclosed in Japanese Patent Application Laid-Open No. 59-50236 uses asbestos as a material of an insulator, and by mixing it with steel fiber, which is a material of a friction member, the friction member and the insulator are mixed. It prevents peeling at the boundary. However, even in this method, harmful asbestos is used, and peeling between the friction member and the insulator and cracks on the side surface of the disk pad cannot be completely prevented.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、摩擦部材の
素材とインシュレータの素材とを一定割合で混合したも
のを緩衝材として用いて耐剥離性や耐亀裂性に優れたデ
ィスクパッドを提供するものである。DISCLOSURE OF THE INVENTION The present invention provides a disc pad excellent in peel resistance and crack resistance by using a mixture of a friction material and an insulator material in a fixed ratio as a cushioning material. It is a thing.
【０００６】[0006]
【課題を解決するための手段】本発明は摩擦部材、イン
シュレータ及び裏金から構成される非石綿系のディスク
パッドにおいて、摩擦部材とインシュレータとの間に、
摩擦部材の素材とインシュレータの素材とを重量比で２
５：７５〜７５：２５（摩擦部材の素材：インシュレー
タの素材）の割合で混合した緩衝材を介在させてなるデ
ィスクパッドに関する。DISCLOSURE OF THE INVENTION The present invention is a non-asbestos type disc pad composed of a friction member, an insulator and a back metal, and between the friction member and the insulator,
The weight ratio of the friction material and insulator material is 2
The present invention relates to a disk pad having a cushioning material mixed therein at a ratio of 5:75 to 75:25 (material of friction member: material of insulator).
【０００７】[0007]
【発明の実施の形態】本発明において摩擦部材の素材と
インシュレータの素材との割合は、重量比で２５：７５
〜７５：２５（摩擦部材の素材：インシュレータの素
材）の範囲とされ、この範囲から外れると耐亀裂性に劣
るという欠点が生じる。また本発明で、摩擦部材とイン
シュレータとの間に介在する緩衝材は、ディスクパッド
の寿命及び亀裂の発生防止の点で０．５〜１．５mmの厚
さにしたものを用いることが好ましい。BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, the weight ratio of the material of the friction member to the material of the insulator is 25:75.
The range is up to 75:25 (material of friction member: material of insulator), and if it deviates from this range, there is a drawback that crack resistance is poor. Further, in the present invention, it is preferable that the cushioning material interposed between the friction member and the insulator has a thickness of 0.5 to 1.5 mm from the viewpoint of the life of the disk pad and prevention of crack generation.
【０００８】本発明における摩擦部材の素材としては、
一般に公知の材料が用いられ、例えばスチール繊維、銅
繊維、しんちゅう繊維、アラミド繊維、フェノール繊
維、セラミック繊維等の繊維状物質、フェノール樹脂、
エポキシ樹脂、メラミン樹脂、カシュー樹脂等の熱硬化
性樹脂やＮＢＲ、ＳＢＲ等のゴム組成物を含む結合剤、
硫酸バリウム、炭酸カルシウム、炭酸マグネシウム、カ
シュー硬化物等の充填剤、黒鉛、二硫化モリブデン等の
潤滑剤などが用いられ、さらに必要に応じて黄銅、しん
ちゅう、銅等の金属粉が添加される。上記における繊維
状物質の含有量は、摩擦部材に対して１５〜３５体積％
の範囲が好ましく、また結合剤の含有量は、摩擦部材に
対して２０〜４０体積％の範囲が好ましく、さらに充填
剤及び潤滑剤の含有量は、摩擦部材に対して３５〜５５
体積％の範囲が好ましい。As the material of the friction member in the present invention,
Generally known materials are used, for example, fibrous substances such as steel fiber, copper fiber, brass fiber, aramid fiber, phenol fiber, ceramic fiber, phenol resin,
A binder containing a thermosetting resin such as an epoxy resin, a melamine resin or a cashew resin, or a rubber composition such as NBR or SBR,
Fillers such as barium sulfate, calcium carbonate, magnesium carbonate and hardened cashew, lubricants such as graphite and molybdenum disulfide are used, and metal powders such as brass, brass and copper are added as necessary. . The content of the fibrous substance in the above is 15 to 35% by volume with respect to the friction member.
Is preferable, the content of the binder is preferably 20 to 40% by volume with respect to the friction member, and the content of the filler and the lubricant is 35 to 55 with respect to the friction member.
A range of volume% is preferred.
【０００９】本発明においてインシュレータとは、表面
に露出して制動を主目的とする摩擦部材に比較して熱伝
導率を低くして摩擦熱をブレーキオイルに伝えないよう
にすること（断熱）を主目的とするもので摩擦部材と裏
金との間に介在して用いられる（熱伝導率は摩擦部材の
３〜４W/m・Kに比較して、インシュレータは０．５〜２W
/m・Kの範囲が好ましい）。しかしながら摩擦部材の部分
がなくなりインシュレータの部分が表面に露出する場合
が考えられる。このため、ある程度の摩擦特性（摩擦係
数、耐摩耗性等）を有していなければならない。そこで
インシュレータの基本的な素材は、摩擦部材の素材と同
様の材料を基にして、目的とする熱伝導率に応じて配合
割合を増減して用いられるが、例えば繊維状物質の含有
量は、インシュレータ全体に対して２０〜４０体積％の
範囲が好ましく、また結合剤の含有量は、インシュレー
タ全体に対して３０〜５０体積％の範囲が好ましく、さ
らに充填剤及び潤滑剤の含有量は、インシュレータ全体
に対して２０〜４０体積％の範囲が好ましい。In the present invention, the insulator means that the frictional heat is not transmitted to the brake oil (heat insulation) by lowering the thermal conductivity as compared with the friction member exposed on the surface and mainly used for braking. The main purpose is to be used by interposing between the friction member and the back metal (The heat conductivity is 0.5-2W for the insulator compared to 3-4W / mK of the friction member.
/ m · K range is preferable). However, it is conceivable that the friction member may disappear and the insulator may be exposed on the surface. Therefore, it must have a certain degree of friction characteristics (friction coefficient, wear resistance, etc.). Therefore, the basic material of the insulator is based on the same material as the material of the friction member, and the compounding ratio is increased or decreased according to the target thermal conductivity, and for example, the content of the fibrous substance is The content of the binder is preferably in the range of 20 to 40% by volume, the content of the binder is preferably in the range of 30 to 50% by volume, and the content of the filler and the lubricant is preferably in the range of 30% by volume. A range of 20 to 40% by volume based on the whole is preferable.
【００１０】本発明になるディスクパッドは、摩擦部材
とインシュレータとの間に、摩擦部材の素材とインシュ
レータの素材とを重量比で２５：７５〜７５：２５（摩
擦部材の素材：インシュレータの素材）の割合で混合し
た緩衝材を介在するものとし、その他の箇所、例えばイ
ンシュレータと裏金との間に該緩衝材を介在した場合
は、耐剥離性や耐亀裂性に対する改善効果は期待できな
い。また本発明になるディスクパッドは、金型内に裏金
を入れ、その上面にインシュレータ用成形粉、緩衝材用
成形粉及び摩擦部材用成形粉の順に充填し、一体成形す
ることにより得られる。In the disc pad according to the present invention, the weight ratio of the material of the friction member and the material of the insulator is 25:75 to 75:25 between the friction member and the insulator (material of the friction member: material of the insulator). If a cushioning material mixed at a ratio of 3 is interposed and the cushioning material is interposed at other locations, for example, between the insulator and the back metal, improvement effects on peel resistance and crack resistance cannot be expected. Further, the disc pad according to the present invention is obtained by putting a back metal in a mold, filling the upper surface thereof with an insulator molding powder, a cushioning material molding powder, and a friction member molding powder in this order, and integrally molding.
【００１１】[0011]
【実施例】以下本発明の実施例を説明する。 実施例１〜３、比較例１〜２ 摩擦部材として長さ２mmのスチール繊維（ローズ社製）
２０体積％、芳香族アラミド繊維（ケブラー繊維、デュ
ポン社製商品名）５体積％、フェノール樹脂（自社製、
非売品）２５体積％、ＮＢＲ粉（ＰＸＬ３８．２０、ポ
リサー社製商品名）５体積％、黒鉛（ＫＳ−１５、ロン
ザ社製商品名）３０体積％及び硫酸バリウム（重晶石
粉、中国広東五金公司社製）１５体積％をヘンシェルミ
キサーで充分混合して摩擦部材用成形粉を得た。EXAMPLES Examples of the present invention will be described below. Examples 1 to 3 and Comparative Examples 1 and 2 Steel fiber having a length of 2 mm (made by Rose Co.) as a friction member.
20% by volume, aromatic aramid fiber (Kevlar fiber, product name manufactured by DuPont) 5% by volume, phenol resin (made in-house,
25% by volume (not for sale), 5% by volume of NBR powder (PXL38.20, trade name of Polycer Co., Ltd.), 30% by volume of graphite (KS-15, product name of Lonza Co., Ltd.) and barium sulfate (barite powder, Guangdong China Gold Co., Ltd.) 15% by volume was thoroughly mixed with a Henschel mixer to obtain a friction member molding powder.
【００１２】一方インシュレータとしてスチール繊維１
０体積％、セラミック繊維（ＳＣ１４００Ｄ２、新日本
製鐵(株)製）１５体積％、芳香族アラミド繊維５体積
％、黒鉛５体積％、硫酸バリウム２５体積％、フェノー
ル樹脂２５体積％及びＮＢＲ粉１５体積％をヘンシェル
ミキサーで充分混合してインシュレータ用成形粉を得
た。なおセラミック繊維以外は上記と同様の原料を用い
た。On the other hand, steel fiber 1 as an insulator
0% by volume, ceramic fiber (SC1400D2, manufactured by Nippon Steel Corporation) 15% by volume, aromatic aramid fiber 5% by volume, graphite 5% by volume, barium sulfate 25% by volume, phenol resin 25% by volume and NBR powder 15 The volume% was sufficiently mixed with a Henschel mixer to obtain a molding powder for an insulator. The same raw materials as above were used except for the ceramic fibers.
【００１３】次に緩衝材として上記で得た摩擦部材用成
形粉とインシュレータ用成形粉とを重量比で１５：８
５、２５：７５、５０：５０、７５：２５及び８５：１
５（摩擦部材用成形粉：インシュレータ用成形粉）の割
合に秤量し、これらをヘンシェルミキサーで充分混合し
て緩衝材用成形粉Ａ、Ｂ、Ｃ、Ｄ及びＥを得た。Next, as a cushioning material, the friction member molding powder and the insulator molding powder obtained above are mixed at a weight ratio of 15: 8.
5, 25:75, 50:50, 75:25 and 85: 1
5 (molding powder for friction member: molding powder for insulator) was weighed and thoroughly mixed with a Henschel mixer to obtain molding powders A, B, C, D and E for cushioning material.
【００１４】この後５個の金型を準備し、それぞれの金
型内に裏金を入れ、その上面にインシュレータ用成形
粉、緩衝材用成形粉Ａ、Ｂ、Ｃ、Ｄ及びＥ並びに摩擦部
材用成形粉の順に充填し（但し、緩衝材用成形粉Ａ、
Ｂ、Ｃ、Ｄ及びＥは別々の金型に充填する）、２．９４
×１０7Pa（３００kgf/cm2）及び１７０℃で１０分間の
条件で加圧加熱して摩擦部材とインシュレータとの間に
緩衝材を介在させた成形体を得た。ついで表面を仕上加
工して非石綿系のディスクパッドＡ、Ｂ、Ｃ、Ｄ及びＥ
を得た。After that, five dies are prepared, a back metal is placed in each of the dies, and molding powders for insulators, molding powders A, B, C, D and E for cushioning materials and friction members are provided on the upper surface thereof. Fill in order of molding powder (however, molding powder A for cushioning material,
B, C, D and E are filled in separate molds) 2.94
By heating under pressure under the conditions of × 10 7 Pa (300 kgf / cm 2 ) and 170 ° C. for 10 minutes, a compact having a cushioning material interposed between the friction member and the insulator was obtained. Next, the surface is finished and non-asbestos type disc pads A, B, C, D and E are used.
I got
【００１５】次いで得られたディスクパッドＡ、Ｂ、
Ｃ、Ｄ及びＥについてＪＩＳＯ Ｃ４０６−８２の区分
Ｐ１に基づくフェード試験を２サイクル行って亀裂の有
無を確認した。その結果を表１に示す。Then, the obtained disk pads A, B,
For C, D, and E, a fade test based on the division P1 of JISO C406-82 was performed for 2 cycles to confirm the presence or absence of cracks. Table 1 shows the results.
【００１６】[0016]
【表１】 [Table 1]
【００１７】表１に示されるように、本発明になるディ
スクパッドは亀裂が発生しないことを確認した。またフ
ェード試験後のディスクパッドの外観を観察したが各部
材間の剥離は見られなかった。これに対し比較例のディ
スクパッドは剥離は見られなかったが、側面に小さな亀
裂が発生していた。As shown in Table 1, it was confirmed that the disk pad according to the present invention did not crack. The appearance of the disc pad after the fade test was observed, but no peeling between the members was observed. On the other hand, no peeling was observed in the disk pad of the comparative example, but a small crack was generated on the side surface.
【００１８】[0018]
【発明の効果】本発明になるディスクパッドは、剥離や
亀裂が生ぜず、工業的に極めて好適なディスクパッドで
ある。Industrial Applicability The disk pad according to the present invention is an industrially extremely suitable disk pad without peeling or cracking.
Claims (1)
構成される非石綿系のディスクパッドにおいて、摩擦部
材とインシュレータとの間に、摩擦部材の素材とインシ
ュレータの素材とを重量比で２５：７５〜７５：２５
（摩擦部材の素材：インシュレータの素材）の割合で混
合した緩衝材を介在させてなるディスクパッド。1. A non-asbestos disk pad comprising a friction member, an insulator and a back metal, wherein the weight ratio of the friction member material and the insulator material is 25:75 to 75 between the friction member and the insulator. : 25
A disk pad having a cushioning material mixed in a ratio of (material of friction member: material of insulator).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19159095A JPH0942336A (en) | 1995-07-27 | 1995-07-27 | Disc pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19159095A JPH0942336A (en) | 1995-07-27 | 1995-07-27 | Disc pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0942336A true JPH0942336A (en) | 1997-02-10 |
Family
ID=16277178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19159095A Pending JPH0942336A (en) | 1995-07-27 | 1995-07-27 | Disc pad |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0942336A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014077505A (en) * | 2012-10-11 | 2014-05-01 | Nippon Brake Kogyo Kk | Friction material and brake pad using the same |
| WO2020222294A1 (en) * | 2019-04-27 | 2020-11-05 | 日清紡ブレーキ株式会社 | Disck brake pad underlayer composition and disc brake pad using same |
-
1995
- 1995-07-27 JP JP19159095A patent/JPH0942336A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014077505A (en) * | 2012-10-11 | 2014-05-01 | Nippon Brake Kogyo Kk | Friction material and brake pad using the same |
| WO2020222294A1 (en) * | 2019-04-27 | 2020-11-05 | 日清紡ブレーキ株式会社 | Disck brake pad underlayer composition and disc brake pad using same |
| JP2020183465A (en) * | 2019-04-27 | 2020-11-12 | 日清紡ブレーキ株式会社 | Under layer composition for disk brake pad and disk brake pad including the composition |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6281755B1 (en) | Friction material composition, and friction material and friction member using the same | |
| KR101837221B1 (en) | Non-asbestos friction material composition, and friction material and friction member using same | |
| EP0000839A1 (en) | Improvements in or relating to friction materials | |
| WO2013108789A1 (en) | Friction material and method for manufacturing same | |
| US11060577B2 (en) | Friction material | |
| JPH0942336A (en) | Disc pad | |
| JP6072494B2 (en) | Friction material and brake pad using the same | |
| JPH06346932A (en) | Frictional material | |
| JP2765301B2 (en) | Non-asbestos disc pad | |
| JP5517917B2 (en) | Friction material manufacturing method | |
| JPS62237127A (en) | Friction material | |
| JP3672047B2 (en) | Non-asbestos disc pad | |
| JP3008218B2 (en) | Non-asbestos-based friction material molded product | |
| JP2004316904A (en) | Friction material for brake | |
| JPH05255657A (en) | Friction material | |
| JP2696215B2 (en) | Asbestos-free friction material | |
| JPH0711238A (en) | Frictional material composition | |
| JPH05320622A (en) | Friction material | |
| JP2012111892A (en) | Friction material for brake pad | |
| JPS6215281A (en) | Friction material composition | |
| JP2001107026A (en) | Friction material composition and friction material using this | |
| JPH04306288A (en) | Non-asbestos friction material | |
| JPH05247443A (en) | Friction material | |
| JPH04314779A (en) | Nonasbestine friction material | |
| JPH07102246A (en) | Nonasbestos friction material |