JPH05202352A - Friction material - Google Patents
Friction materialInfo
- Publication number
- JPH05202352A JPH05202352A JP1310992A JP1310992A JPH05202352A JP H05202352 A JPH05202352 A JP H05202352A JP 1310992 A JP1310992 A JP 1310992A JP 1310992 A JP1310992 A JP 1310992A JP H05202352 A JPH05202352 A JP H05202352A
- Authority
- JP
- Japan
- Prior art keywords
- fibers
- friction material
- disc brake
- weight
- brake pad
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は自動車などの制動に用い
られるディスクブレーキパッド、ブレーキライニング等
の摩擦材の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvements in friction materials such as disc brake pads and brake linings used for braking automobiles.
【０００２】[0002]
【従来の技術】例えば自動車等の制動装置としてディス
クブレーキが使用されており、その制動部材として非ア
スベスト系のディスクブレーキパッドがある。現在該非
アスベスト系のディスクブレーキパッドの主流は、スチ
ール繊維を５０〜６０重量％含有したセミメタリックデ
ィスクブレーキパッドが使用されている。2. Description of the Related Art Disc brakes are used as braking devices for automobiles and the like, and non-asbestos disc brake pads are used as the braking members. At present, the mainstream of the non-asbestos type disc brake pad is a semi-metallic disc brake pad containing 50 to 60% by weight of steel fiber.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら従来のセ
ミメタリックディスクブレーキパッドは、異音が発生し
たり錆が発生するなどの問題点があった。このため最近
はスチール繊維の含有率がより少ない新規な材質の開発
が進められているが、満足すべきものが得られないのが
現状である。However, the conventional semi-metallic disc brake pads have problems such as abnormal noise and rust. For this reason, recently, a new material having a lower content of steel fibers has been developed, but it is the current situation that a satisfactory material cannot be obtained.
【０００４】またスチール繊維に代えて、アラミド繊
維、フェノール繊維等の有機質繊維、ケイ酸カルシウム
繊維、アルミナシリカ繊維、カーボン繊維等の無機質繊
維、黄銅繊維、銅繊維等の非鉄金属繊維等の使用が考え
られるが、これらの繊維は補強効果の点で問題があり、
加熱加圧成形時にパッド側面の亀裂による不具合発生率
が増加する傾向にある。Further, in place of steel fiber, use of organic fiber such as aramid fiber, phenol fiber, etc., calcium silicate fiber, alumina silica fiber, inorganic fiber such as carbon fiber, non-ferrous metal fiber such as brass fiber, copper fiber, etc. It is conceivable that these fibers have problems in terms of reinforcing effect,
The rate of occurrence of defects due to cracks on the side surface of the pad tends to increase during heat and pressure molding.
【０００５】上記の問題点の対策として、フェノール樹
脂などの熱硬化性樹脂の含有量を増加することが考えら
れるが、熱硬化性樹脂を増加するとフェード時の摩擦性
能が低下したり、異音の発生を防止するのが困難である
等の欠点が生じる。As a countermeasure against the above problems, it is considered to increase the content of thermosetting resin such as phenol resin. However, when the amount of thermosetting resin is increased, the friction performance at the time of fading is reduced, or abnormal noise is generated. However, it is difficult to prevent the occurrence of
【０００６】本発明は摩擦性能を低下することなく、加
熱加圧成形時のパッド側面の亀裂不具合を大幅に低減さ
せるための摩擦材を提供することを目的とするものであ
る。An object of the present invention is to provide a friction material for significantly reducing crack defects on the side surface of a pad during heat and pressure molding without lowering friction performance.
【０００７】[0007]
【課題を解決するための手段】本発明は全組成物中に金
属繊維を１〜２０重量％、有機質繊維及び／又は無機質
繊維を１〜４０重量％並びに熱硬化性樹脂及び未加硫ゴ
ムを含む結合剤を３〜１５重量％含有してなる摩擦材に
関する。According to the present invention, 1 to 20% by weight of metal fibers, 1 to 40% by weight of organic fibers and / or inorganic fibers, a thermosetting resin and an unvulcanized rubber are contained in the entire composition. The present invention relates to a friction material containing 3 to 15% by weight of a binder containing.
【０００８】なお熱硬化性樹脂及び未加硫ゴムを含む結
合剤中に含まれる未加硫ゴムの含有量は、２〜４０重量
％の割合とすることが好ましい。該未加硫ゴムとして
は、スチレン−ブタジエン共重合体（ＳＢＲ）、ブタジ
エン−アクリロニトリル共重合体（ＮＢＲ）、天然ゴム
等が一種又は二種以上組合せて用いられる。これらは粉
末状、液状のいずれの状態で用いてもよく特に制限はな
い。The content of the unvulcanized rubber contained in the binder containing the thermosetting resin and the unvulcanized rubber is preferably 2 to 40% by weight. As the unvulcanized rubber, styrene-butadiene copolymer (SBR), butadiene-acrylonitrile copolymer (NBR), natural rubber and the like are used alone or in combination of two or more. These may be used in the form of powder or liquid and are not particularly limited.
【０００９】本発明において金属繊維としては、銅繊
維、黄銅繊維、スチール繊維等が用いられ、有機質繊維
としては、アラミド繊維、フェノール繊維等が用いら
れ、また無機質繊維としては、ケイ酸カルシウム繊維、
アルミナシリカ繊維、カーボン繊維等が用いられる。さ
らに熱硬化性樹脂としては、フェノール樹脂、エポキシ
樹脂等が用いられる。In the present invention, copper fibers, brass fibers, steel fibers, etc. are used as the metal fibers, aramid fibers, phenol fibers, etc. are used as the organic fibers, and calcium silicate fibers are used as the inorganic fibers.
Alumina silica fiber, carbon fiber or the like is used. Further, as the thermosetting resin, phenol resin, epoxy resin or the like is used.
【００１０】金属繊維の含有量は、全組成物中に１〜２
０重量％の範囲とされ、１重量％未満であると補強効果
はなく、２０重量％を越えると異音が発生する。また有
機質繊維及び無機質繊維の含有量は、全組成物中に１〜
４０重量％の範囲とされ、１重量％未満であると補強効
果はなく、４０重量％を越えると相手材攻撃性が大きく
なる。さらに結合剤の含有量は、全組成物中に３〜１５
重量％の範囲とされ、３重量％未満であると亀裂による
不具合が改良されず、１５重量％を越えると摩擦性能が
低下するという欠点が生じる。The content of metal fibers is 1-2 in the total composition.
When the amount is within the range of 0% by weight, the reinforcing effect is not obtained when the amount is less than 1% by weight, and the noise is generated when the amount exceeds 20% by weight. The content of organic fibers and inorganic fibers is 1 to
The content is in the range of 40% by weight, and if it is less than 1% by weight, there is no reinforcing effect, and if it exceeds 40% by weight, the attacking property of the mating material becomes large. Further, the content of the binder is 3 to 15 in the entire composition.
If the content is within the range of 3% by weight, the problem due to cracking will not be improved if the content is less than 3% by weight, and the friction performance will deteriorate if the content exceeds 15% by weight.
【００１１】本発明の摩擦材は、上記に示す成分の他に
必要に応じて、フリクションダストなどの有機質摩擦調
整剤、硫酸バリウム、黒鉛、三硫化アンチモン等の充て
ん剤が用いられる。In the friction material of the present invention, an organic friction modifier such as friction dust and a filler such as barium sulfate, graphite and antimony trisulfide may be used, if necessary, in addition to the components described above.
【００１２】[0012]
【実施例】以下本発明の実施例を説明する。 実施例１ 表１に示す成分を配合し、混合機により均一に混合した
後電気オーブン中で８２．５±２．５℃で２時間乾燥
し、その後粉砕して成形粉とし、次いで室温下で予備成
形してから１５２．５±２．５℃、圧力４．９×１０7
Ｐａ（５００ｋｇｆ／ｃｍ2）の条件で５分間加熱加圧
成形し、さらに２００℃で５時間焼成し、冷却後研摩し
てセミメタリックディスクブレーキパッドを得た。EXAMPLES Examples of the present invention will be described below. Example 1 Ingredients shown in Table 1 were blended, uniformly mixed by a mixer, dried in an electric oven at 82.5 ± 2.5 ° C. for 2 hours, and then pulverized into a molding powder, and then at room temperature. 152.5 ± 2.5 ℃ after preforming, pressure 4.9 × 10 7
It was heated and pressed for 5 minutes under the condition of Pa (500 kgf / cm 2 ), further baked at 200 ° C. for 5 hours, cooled and polished to obtain a semi-metallic disc brake pad.
【００１３】[0013]
【表１】 [Table 1]
【００１４】実施例２ 表２に示す成分を配合し、以下実施例１と同様の工程を
経てセミメタリックディスクブレーキパッドを得た。な
お各原料は実施例１と同じものを使用した。Example 2 The components shown in Table 2 were blended, and the same steps as in Example 1 were followed to obtain a semimetallic disc brake pad. The same raw materials as in Example 1 were used.
【００１５】[0015]
【表２】 [Table 2]
【００１６】実施例３ 表３に示す成分を配合し、以下実施例１と同様の工程を
経てセミメタリックディスクブレーキパッドを得た。な
お各原料は実施例１と同じものを使用した。Example 3 The components shown in Table 3 were blended, and the same steps as in Example 1 were followed to obtain a semimetallic disc brake pad. The same raw materials as in Example 1 were used.
【００１７】[0017]
【表３】 [Table 3]
【００１８】比較例１ ＮＢＲ粉末を添加せず、フェノール樹脂を７．３重量％
配合した以外は実施例１と同配合で、かつ実施例１と同
様の工程を経てセミメタリックディスクブレーキパッド
を得た。なお各原料は実施例１と同じものを使用した。Comparative Example 1 7.3 wt% of phenol resin was added without adding NBR powder.
A semi-metallic disc brake pad was obtained through the same steps as in Example 1 except that the semi-metallic disc brake pad was used. The same raw materials as in Example 1 were used.
【００１９】次に本発明になるセミメタリックディスク
ブレーキパッドと従来（比較例１）のセミメタリックデ
ィスクブレーキパッドとについて亀裂の発生度合及び慣
性ダイナモメータでＪＡＳＯ、Ｃ４０６−８２に従って
第１フェードリカバリ試験におけるフェード試験を行
い、第１フェード最低μ値を求めた。その結果を表４に
示す。なお亀裂の発生度合については、加熱加圧成形後
の成形物の側面（パッド側面）を観察した結果である。Next, regarding the semi-metallic disc brake pad according to the present invention and the conventional (Comparative Example 1) semi-metallic disc brake pad, the degree of crack occurrence and the inertia dynamometer in the first fade recovery test according to JASO, C406-82. A fade test was performed to determine the first fade minimum μ value. The results are shown in Table 4. The degree of crack generation is the result of observing the side surface (pad side surface) of the molded product after the heat and pressure molding.
【００２０】[0020]
【表４】 ＊試験条件 型式：コレットタイプ（シリンダ面積：２５ｃｍ2） イナーシャ：４９Ｎ・ｍ・ｓ2 タイヤ半径：０．２９２ｍ[Table 4] * Test conditions Model: Collet type (Cylinder area: 25 cm 2 ) Inertia: 49 N · m · s 2 Tire radius: 0.292 m
【００２１】試験の結果、本発明になるセミメタリック
ディスクブレーキパッドは表４に示すように、亀裂の発
生度合が低く、また第１フェード最低μ値についても従
来のセミメタリックディスクブレーキパッドと同等の値
を示し、フェード時の摩擦性能が低下しないことがわか
る。さらに異音についても効果があることが確認され
た。As a result of the test, as shown in Table 4, the semi-metallic disc brake pad according to the present invention has a low degree of crack generation and has the same first fade minimum μ value as that of the conventional semi-metallic disc brake pad. A value is shown, and it can be seen that the friction performance at the time of fade does not decrease. It was also confirmed that it was effective against abnormal noise.
【００２２】[0022]
【発明の効果】本発明になる摩擦材は、パッド側面の亀
裂の発生度合が低く、フェード時の摩擦性能が低下せ
ず、異音、錆がほとんど発生せず、工業的に極めて好適
な摩擦材である。EFFECT OF THE INVENTION The friction material according to the present invention has a low degree of cracking on the side surface of the pad, does not deteriorate the friction performance at the time of fading, produces almost no abnormal noise and rust, and has an industrially extremely suitable friction. It is a material.
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成４年２月２０日[Submission date] February 20, 1992
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１２[Correction target item name] 0012
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１２】[0012]
【実施例】以下本発明の実施例を説明する。 実施例１ 表１に示す成分を配合し、混合機により均一に混合した
後電気オーブン中で８２．５±２．５℃で２時間乾燥
し、その後粉砕して成形粉とし、次いで室温下で予備焼
成してから１５２．５±２．５℃、圧力４．９×１０7
Ｐａ（５００Ｋｇｆ／ｃｍ2）の条件で５分間加熱加圧
成形し、さらに２００℃で５時間焼成し、冷却後研磨し
て非アスベストディスクブレーキパッドを得た。EXAMPLES Examples of the present invention will be described below. Example 1 Ingredients shown in Table 1 were blended, uniformly mixed by a mixer, dried in an electric oven at 82.5 ± 2.5 ° C. for 2 hours, and then pulverized into a molding powder, and then at room temperature. 152.5 ± 2.5 ℃ after pre-baking, pressure 4.9 × 10 7
A non-asbestos disc brake pad was obtained by hot pressing under Pa (500 Kgf / cm 2 ) for 5 minutes, firing at 200 ° C. for 5 hours, cooling and polishing.
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１４[Correction target item name] 0014
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１４】実施例２ 表２に示す成分を配合し、以下実施例１と同様の工程を
経て非アスベストディスクブレーキパッドを得た。なお
各原料は実施例１と同じものを使用した。Example 2 The components shown in Table 2 were blended and the same steps as in Example 1 were carried out to obtain a non-asbestos disc brake pad. The same raw materials as in Example 1 were used.
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１６[Correction target item name] 0016
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１６】実施例３ 表３に示す成分を配合し、以下実施例１と同様の工程を
経て非アスベストディスクブレーキパッドを得た。なお
各原料は実施例１と同じものを使用した。Example 3 The components shown in Table 3 were blended and the same steps as in Example 1 were carried out to obtain a non-asbestos disc brake pad. The same raw materials as in Example 1 were used.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１８[Correction target item name] 0018
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１８】比較例１ ＮＢＲ粉末を添加せず、フェノール樹脂を７．３重量％
配合した以外は実施例１と同配合で、かつ実施例１と同
様の工程を経て非アスベストディスクブレーキパッドを
得た。なお各原料は実施例１と同じものを使用した。Comparative Example 1 7.3 wt% of phenol resin was added without adding NBR powder.
A non-asbestos disc brake pad was obtained with the same composition as in Example 1 except that the compounding was carried out, and through the same steps as in Example 1. The same raw materials as in Example 1 were used.
【手続補正５】[Procedure Amendment 5]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１９[Name of item to be corrected] 0019
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１９】次に本発明になる非アスベストディスクブ
レーキパッドと従来（比較例１）の非アスベストディス
クブレーキパッドとについて亀裂の発生度合及び慣性ダ
イナモメータでＪＡＳＯ、Ｃ４０６−８２に従って第１
フェードリカバリ試験におけるフェード試験を行い、第
１フェード最低μ値を求めた。その結果を表４に示す。
なお亀裂の発生度合については、加熱加圧成形後の成形
物の側面（パッド側面）を観察した結果である。Next, regarding the non-asbestos disc brake pad according to the present invention and the conventional non-asbestos disc brake pad (Comparative Example 1), the crack generation degree and the inertia dynamometer were measured according to JASO, C406-82.
The fade test in the fade recovery test was performed to determine the first fade minimum μ value. The results are shown in Table 4.
The degree of crack generation is the result of observing the side surface (pad side surface) of the molded product after the heat and pressure molding.
【手続補正６】[Procedure correction 6]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２１[Correction target item name] 0021
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２１】試験の結果、本発明になる非アスベストデ
ィスクブレーキパッドは表４に示されるように、亀裂の
発生度合が低く、また第１フェード最低μ値についても
従来の非アスベストディスクブレーキパッドと同等の値
を示し、フェード時の摩擦性能が低下しないことがわか
る。さらに異音についても効果があることが確認され
た。As a result of the test, as shown in Table 4, the non-asbestos disc brake pad according to the present invention has a low degree of crack generation and has the same first fade minimum μ value as the conventional non-asbestos disc brake pad. It is shown that the friction performance at the time of fade does not decrease. It was also confirmed that it was effective against abnormal noise.
Claims (2)
％、有機質繊維及び／又は無機質繊維を１〜４０重量％
並びに熱硬化性樹脂及び未加硫ゴムを含む結合剤を３〜
１５重量％含有してなる摩擦材。1. The total composition contains 1 to 20% by weight of metal fibers and 1 to 40% by weight of organic fibers and / or inorganic fibers.
And a binder containing a thermosetting resin and an unvulcanized rubber in an amount of 3 to
A friction material containing 15% by weight.
含有してなる請求項１記載の摩擦材。2. The binder contains 2 to 40% by weight of unvulcanized rubber.
The friction material according to claim 1, which contains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1310992A JPH05202352A (en) | 1992-01-28 | 1992-01-28 | Friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1310992A JPH05202352A (en) | 1992-01-28 | 1992-01-28 | Friction material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05202352A true JPH05202352A (en) | 1993-08-10 |
Family
ID=11823987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1310992A Pending JPH05202352A (en) | 1992-01-28 | 1992-01-28 | Friction material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05202352A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2341607A (en) * | 1998-09-15 | 2000-03-22 | Morgan Crucible Co | Composite materials comprising alkaline earth silicate fibres |
| CN105202084A (en) * | 2015-09-28 | 2015-12-30 | 东营博瑞制动系统有限公司 | Little-metal brake pad prepared from calcium hydrate silicate powder |
-
1992
- 1992-01-28 JP JP1310992A patent/JPH05202352A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2341607A (en) * | 1998-09-15 | 2000-03-22 | Morgan Crucible Co | Composite materials comprising alkaline earth silicate fibres |
| GB2341607B (en) * | 1998-09-15 | 2000-07-19 | Morgan Crucible Co | Bonded fibrous materials |
| US6987076B1 (en) | 1998-09-15 | 2006-01-17 | The Morgan Crucible Company Plc | Bonded fibrous materials |
| CN105202084A (en) * | 2015-09-28 | 2015-12-30 | 东营博瑞制动系统有限公司 | Little-metal brake pad prepared from calcium hydrate silicate powder |
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