JPH06184524A - Composition for friction material - Google Patents
Composition for friction materialInfo
- Publication number
- JPH06184524A JPH06184524A JP33771592A JP33771592A JPH06184524A JP H06184524 A JPH06184524 A JP H06184524A JP 33771592 A JP33771592 A JP 33771592A JP 33771592 A JP33771592 A JP 33771592A JP H06184524 A JPH06184524 A JP H06184524A
- Authority
- JP
- Japan
- Prior art keywords
- friction material
- present
- asbestos
- disc brake
- material composition
- 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
- 239000002783 friction material Substances 0.000 title claims description 16
- 239000000203 mixture Substances 0.000 title claims description 12
- 239000010425 asbestos Substances 0.000 claims abstract description 8
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 8
- 239000012170 montan wax Substances 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims abstract description 5
- 229920005989 resin Polymers 0.000 claims abstract description 4
- 239000011347 resin Substances 0.000 claims abstract description 4
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 4
- 239000000126 substance Substances 0.000 claims description 4
- 239000002657 fibrous material Substances 0.000 abstract 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 2
- 239000001095 magnesium carbonate Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は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組成物に関する。FIELD OF THE INVENTION The present invention relates to a friction material composition for disc brake pads, brake linings and the like.
【０００２】[0002]
【従来の技術】例えば自動車などの制動装置としてディ
スクブレーキパッド、ブレーキライニング等の摩擦材が
用いられている。従来の摩擦材は、石綿を基材としてい
たが、最近はその粉じんが人体に有害であることが指摘
され、石綿の使用が規制されてきており、非石綿系の摩
擦材の開発が望まれている。2. Description of the Related Art For example, a friction material such as a disc brake pad or a brake lining is used as a braking device for automobiles. Conventional friction materials were based on asbestos, but recently it has been pointed out that the dust is harmful to the human body, and the use of asbestos has been regulated.The development of non-asbestos friction materials is desired. ing.
【０００３】現在、非石綿系摩擦材としては、耐熱性有
機繊維、ガラス繊維、金属繊維等の繊維性物質に、フェ
ノール樹脂、エポキシ樹脂等の結合剤及び黒鉛、硫酸バ
リウム、炭酸バリウム、炭酸マグネシウム等の充てん剤
を含む摩擦材が一般的に知られている。Currently, non-asbestos friction materials include fibrous substances such as heat-resistant organic fibers, glass fibers and metal fibers, a binder such as phenol resin and epoxy resin, and graphite, barium sulfate, barium carbonate and magnesium carbonate. Friction materials containing fillers such as the following are generally known.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら上記に示
す従来のディスクブレーキパッド、ブレーキライニング
等は、制動時にブレーキ鳴きと称する不快音を発生する
という問題点があった。However, the above-mentioned conventional disc brake pads, brake linings, and the like have a problem that an unpleasant noise called brake squeal is generated during braking.
【０００５】本発明はブレーキ鳴きを防止ないしは極力
減少させるための摩擦材組成物を提供するものである。The present invention provides a friction material composition for preventing or reducing brake squeal as much as possible.
【０００６】[0006]
【課題を解決するための手段】本発明者らは上記の問題
点について種々検討した結果、摩擦材組成物中にモンタ
ンロウ（モンタンワックス）を０．１〜１０体積％含有
すれば、ブレーキ鳴きを防止ないしは極力減少させるこ
とができるということをつきとめ本発明を完成するに至
った。As a result of various studies on the above problems, the present inventors have found that if the friction material composition contains montan wax (Montan wax) in an amount of 0.1 to 10% by volume, brake squeal occurs. The present invention has been completed by finding that it can be prevented or reduced as much as possible.
【０００７】本発明は石綿以外の繊維性物質、熱硬化性
樹脂及び充てん剤を含み、かつ全組成物中にモンタンロ
ウを０．１〜１０体積％含有せしめてなる摩擦材組成物
に関する。The present invention relates to a friction material composition containing a fibrous substance other than asbestos, a thermosetting resin and a filler, and containing 0.1 to 10% by volume of montan wax in the entire composition.
【０００８】本発明においてモンタンロウは、０．１〜
１０体積％の範囲とされ、０．１体積％未満であるとブ
レーキ鳴きの効果がなく、１０体積％を越えると摩擦係
数μが下がり、制動力が低下する。In the present invention, montan wax is 0.1 to
It is set in the range of 10% by volume, and if it is less than 0.1% by volume, the brake squeal effect is not obtained, and if it exceeds 10% by volume, the coefficient of friction μ decreases and the braking force decreases.
【０００９】本発明になる摩擦材組成物中に含まれる石
綿以外の繊維性物質としては、耐熱性有機繊維、金属繊
維、ガラス繊維等が用いられ、熱硬化性樹脂としては、
フェノール樹脂、エポキシ樹脂、メラミン樹脂等が用い
られ、また充てん剤としては、黒鉛、硫酸バリウム、炭
酸バリウム、炭酸マグネシウム等が用いられる。本発明
においては、さらに必要に応じて有機質摩擦調整材、金
属粉等が用いられる。As the fibrous substances other than asbestos contained in the friction material composition according to the present invention, heat resistant organic fibers, metal fibers, glass fibers and the like are used, and as the thermosetting resin,
Phenol resin, epoxy resin, melamine resin and the like are used, and as the filler, graphite, barium sulfate, barium carbonate, magnesium carbonate and the like are used. In the present invention, an organic friction modifier, metal powder, etc. are further used as required.
【００１０】[0010]
【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、混合機で均一に混合したの
ち、室温下で圧力２．９４×１０7Ｐａ（３００ｋｇｆ
／ｃｍ2）の条件で予備成形し、この後温度１５０℃、
圧力４．９×１０7Ｐａ（５００ｋｇｆ／ｃｍ2）の条件
で１０分間加熱加圧成形し、次いで２００℃で５時間熱
処理して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 The components shown in Table 1 were blended and uniformly mixed with a mixer, and then the pressure was 2.94 × 10 7 Pa (300 kgf at room temperature).
/ Cm 2 ) pre-molding under the conditions of temperature 150 ℃,
Heat-press molding was performed for 10 minutes under a pressure of 4.9 × 10 7 Pa (500 kgf / cm 2 ) and then heat treatment was performed at 200 ° C. for 5 hours to obtain a disc brake pad.
【００１１】[0011]
【表１】 [Table 1]
【００１２】比較例１ モンタンロウを含有せしめず表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ディスクブレーキパッ
ドを得た。なお表２に示す原料は、実施例１と同じもの
を使用した。Comparative Example 1 The components shown in Table 2 were blended without adding montan wax,
A disc brake pad was obtained through the same steps as in Example 1 below. The raw materials shown in Table 2 were the same as those used in Example 1.
【００１３】[0013]
【表２】 [Table 2]
【００１４】次に本発明になる摩擦材組成物を用いたデ
ィスクブレーキパッドと従来（比較例１）のディスクブ
レーキとについてブレーキ鳴きの比較試験を行った。な
お試験条件は、表３に示すように減速度及び温度を変化
させ、（１）〜（６５）の条件のときディスクブレーキ
を制動し、鳴き発生頻度Next, a comparative test of brake squeal was performed on a disc brake pad using the friction material composition according to the present invention and a conventional disc brake (Comparative Example 1). The test conditions were to change the deceleration and the temperature as shown in Table 3, to brake the disc brake under the conditions (1) to (65), and to determine the squealing frequency.
【数１】 を３サイクル（（１）〜（６５）までを１サイクル）測
定した。測定した結果を表４に示す。[Equation 1] Was measured for 3 cycles ((1) to (65) for 1 cycle). Table 4 shows the measurement results.
【００１５】[0015]
【表３】 ※キャリパー型式 ＣＬ２５ＶＡ 車速は５０ｋｍ／時間に保つ[Table 3] * Caliper model CL25VA Keep the vehicle speed at 50km / hour
【００１６】[0016]
【表４】 [Table 4]
【００１７】表４から明らかなように本発明になるディ
スクブレーキパッドは、鳴き発生頻度が小さく効果が大
であることがわかる。これに対し従来のディスクブレー
キパッドは鳴き発生頻度が１．４％以上と大きかった。As can be seen from Table 4, the disc brake pad according to the present invention has a small squeal occurrence frequency and a great effect. In contrast, the conventional disc brake pad had a high squeal occurrence frequency of 1.4% or more.
【００１８】[0018]
【発明の効果】本発明になる摩擦材組成物は、ブレーキ
鳴きを防止ないしは極力減少させることが可能なディス
クブレーキパッド、ブレーキライニング等の摩擦材を得
るのに好適な摩擦材組成物である。INDUSTRIAL APPLICABILITY The friction material composition according to the present invention is a friction material composition suitable for obtaining a friction material such as a disc brake pad and a brake lining which can prevent or reduce brake squeal as much as possible.
Claims (1)
び充てん剤を含み、かつ全組成物中にモンタンロウを
０．１〜１０体積％含有せしめてなる摩擦材組成物。1. A friction material composition comprising a fibrous substance other than asbestos, a thermosetting resin, and a filler, and containing 0.1 to 10% by volume of montan wax in the entire composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33771592A JPH06184524A (en) | 1992-12-18 | 1992-12-18 | Composition for friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33771592A JPH06184524A (en) | 1992-12-18 | 1992-12-18 | Composition for friction material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06184524A true JPH06184524A (en) | 1994-07-05 |
Family
ID=18311288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33771592A Pending JPH06184524A (en) | 1992-12-18 | 1992-12-18 | Composition for friction material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06184524A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020189648A1 (en) * | 2019-03-20 | 2020-09-24 | 曙ブレーキ工業株式会社 | Friction material for disc brake |
| WO2022058942A1 (en) * | 2020-09-17 | 2022-03-24 | Itt Italia S.R.L. | Friction material block, in particular for equipping brake pads and associated brake pad and method |
-
1992
- 1992-12-18 JP JP33771592A patent/JPH06184524A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020189648A1 (en) * | 2019-03-20 | 2020-09-24 | 曙ブレーキ工業株式会社 | Friction material for disc brake |
| JP2020152847A (en) * | 2019-03-20 | 2020-09-24 | 曙ブレーキ工業株式会社 | Friction material for disc brakes |
| CN113614197A (en) * | 2019-03-20 | 2021-11-05 | 曙制动器工业株式会社 | Friction material for disc brake |
| JP2023145601A (en) * | 2019-03-20 | 2023-10-11 | 曙ブレーキ工業株式会社 | Friction material for disc brakes |
| WO2022058942A1 (en) * | 2020-09-17 | 2022-03-24 | Itt Italia S.R.L. | Friction material block, in particular for equipping brake pads and associated brake pad and method |
| KR20230066621A (en) * | 2020-09-17 | 2023-05-16 | 아이티티 이탈리아 에스.알.엘. | In particular, blocks of friction material for mounting brake pads and related brake pads and methods |
| CN116324209A (en) * | 2020-09-17 | 2023-06-23 | 意大利Itt有限责任公司 | Block of friction material especially for equipping a brake pad and related brake pad and method |
| JP2023542905A (en) * | 2020-09-17 | 2023-10-12 | アイティーティー・イタリア・エス．アール．エル | Friction material blocks and related brake pads and methods, especially for equipping brake pads |
| US12546371B2 (en) | 2020-09-17 | 2026-02-10 | Itt Italia S.R.L. | Friction material block, in particular for equipping brake pads and associated brake pad and method |
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