JPS60228587A - Friction material composition - Google Patents
Friction material compositionInfo
- Publication number
- JPS60228587A JPS60228587A JP8469984A JP8469984A JPS60228587A JP S60228587 A JPS60228587 A JP S60228587A JP 8469984 A JP8469984 A JP 8469984A JP 8469984 A JP8469984 A JP 8469984A JP S60228587 A JPS60228587 A JP S60228587A
- Authority
- JP
- Japan
- Prior art keywords
- friction
- disc brake
- coefficient
- friction material
- semi
- 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 abstract description 18
- 239000000203 mixture Substances 0.000 title claims description 17
- 239000011271 tar pitch Substances 0.000 abstract description 8
- 239000000835 fiber Substances 0.000 abstract description 5
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000000843 powder Substances 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical class [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011230 binding agent Substances 0.000 abstract description 2
- 239000010439 graphite Substances 0.000 abstract description 2
- 229910002804 graphite Inorganic materials 0.000 abstract description 2
- 239000000314 lubricant Substances 0.000 abstract description 2
- 239000003607 modifier Substances 0.000 abstract description 2
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052982 molybdenum disulfide Inorganic materials 0.000 abstract description 2
- 229920005989 resin Polymers 0.000 abstract description 2
- 239000011347 resin Substances 0.000 abstract description 2
- 239000002657 fibrous material Substances 0.000 abstract 1
- 229910052961 molybdenite Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- 230000013011 mating Effects 0.000 description 4
- 239000010425 asbestos Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229910052895 riebeckite Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は自動車等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組成物に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a friction material composition for disc brake pads, brake linings, etc. used in automobiles and the like.
（従来技術とその問題点）
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
用されているが、従来のディスクブレーキは制動時にブ
レーキ鳴きと称する不快音を発生する。このように制動
時に発生するブレーキ鳴き現象は近来特に一般市場にお
ける重大な不具合現象としてその原因究明、対策等様々
の動きがなされている。(Prior art and its problems) For example, disc brakes are used as braking devices for automobiles, etc., but conventional disc brakes generate an unpleasant noise called brake squeal when braking. In recent years, the brake squeal phenomenon that occurs during braking has become a serious problem, particularly in the general market, and various efforts have been made to investigate its causes and take countermeasures.
このブレーキ鳴き現象は周波数ｚｏｏｏ−ａ、ｏｏ。This brake squeal phenomenon has frequencies zooo-a, oo.
ヘルツ以上の高周波数の音であるが、自動車のブレーキ
鳴きにはこれ以外に特にオートマチック車の発進時及び
停止時に発生する１００〜３００ヘルツ程度の低周波の
異音がおる。Although this is a sound with a high frequency of Hertz or higher, there is also a low frequency abnormal noise of about 100 to 300 Hertz, which occurs especially when an automatic car starts and stops, in addition to the brake squeal of an automobile.
この低周波の異音は低速における相手材と摩擦材の摩擦
係数の瞬間的な変動が原因で発生し１時に車体振動を起
こす程大きな振動となる。This low-frequency noise is caused by instantaneous fluctuations in the coefficient of friction between the mating material and the friction material at low speeds, and the vibration is large enough to cause the vehicle body to vibrate at 1 o'clock.
この低周波の異音は近来アスベスト代替繊維としてスチ
ール繊維を用いたセミメタリックディスクブレーキパッ
ドにおいて非常に顕著に発生することが知られている。Recently, it has been known that this low-frequency noise occurs very significantly in semi-metallic disc brake pads that use steel fiber as an asbestos substitute fiber.
このため今後のオートマチック車の伸長及び非アスベス
ト化（セミメタリック化）の動向より、一般の高周波の
鳴き同様に解決を要する大きな問題点となってきている
。For this reason, with the future growth in automatic cars and the trend toward non-asbestos (semi-metallic), this is becoming a major problem that needs to be solved, similar to general high-frequency noise.
前記のような低周波の異音は極低速（５〜１０ｋｍ／時
間以下）における相手材と摩擦材詳しくはディスクブレ
ーキパッド間の摩擦係数の変動が原因であり、これが相
手材ディスク・キャリパ−を介して自動車の足廻り部と
共振して異音となるため、これを防ぐＫは足廻り部の剛
性を向上せしめることか有効な手段と推定されるが、こ
れらとは別にディスクブレーキパッド自身を改質し、摩
擦係数の変動を抑え、異音を減少せしめることが肝要で
ある。The low-frequency noise mentioned above is caused by fluctuations in the coefficient of friction between the mating material and the friction material, specifically the disc brake pad, at extremely low speeds (below 5 to 10 km/hour), and this causes the mating material disc and caliper to It resonates with the undercarriage of the car and produces abnormal noise, so it is presumed that an effective means of preventing this is to improve the rigidity of the undercarriage. It is important to modify the material to suppress fluctuations in the coefficient of friction and reduce noise.
本発明者らは、０．５ｋｍ／時間より停止にいたるまで
の摩擦係数の変動を調査した。その結果９通常のセミメ
タリックディスクブレーキパッドの摩擦係数は、停止直
前において摩擦係数が異常に大きくなることがわかった
。摩擦係数が大きくなることＫより相手材であるディス
クロータとステイクスリップをひきおこし、低周波の異
音及び車体振動の発生の原因となる。The present inventors investigated fluctuations in the coefficient of friction from 0.5 km/hour to stopping. As a result, it was found that the friction coefficient of a normal semi-metallic disc brake pad becomes abnormally large just before the vehicle stops. An increase in the coefficient of friction causes stake slip with the disc rotor, which is the mating material, and causes low-frequency noise and vehicle body vibration.
（発明の目的）
本発明は上記の事情に鑑みて、低周波の異音及び車体振
動を防止ないしは減少させるための摩擦材組成物を提供
することを目的とするものである。(Objective of the Invention) In view of the above circumstances, an object of the present invention is to provide a friction material composition for preventing or reducing low-frequency noise and vehicle body vibration.
（問題点を解決するための手段）
本発明者らは上記の欠点を解消するため九種々検討した
結果、摩擦材全組成物中にタールピッチを０．５〜１５
容量チ含有せしめたところ、摩擦係数が異常に大きくな
ることがなく、かつこれらによる実際の自動車における
テストでも低周波の異音及び車体振動を防止ないしは減
少させるディスクブレーキパッド、ブレーキライニング
等の摩擦材を提供する摩擦材組成物が得られることを見
い出した。(Means for Solving the Problems) The present inventors have conducted nine different studies to solve the above-mentioned drawbacks, and have found that 0.5 to 15% of tar pitch is added to the entire friction material composition.
Friction materials for disc brake pads, brake linings, etc. that do not have an abnormally large coefficient of friction when containing capacitance, and prevent or reduce low-frequency noise and vehicle body vibration even in actual automobile tests. It has been discovered that a friction material composition that provides the following properties can be obtained.
本発明は全組成物中にタールピッチを０．５〜１５容量
チ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 0.5 to 15 volumes of tar pitch in the entire composition.
（数値限定の理由）
本発明においてタールピッチは全組成物中に０．５〜１
５容量チ含有させることが必要であり。(Reason for numerical limitation) In the present invention, tar pitch is contained in the total composition in the range of 0.5 to 1.
It is necessary to contain 5 volumes of water.
この範囲から外れると摩擦係数が異常に大きくなったり
、低周波の異音が発生し車体振動を起こす等の欠点が生
じ本発明の目的を達成することができない。なおタール
ピッチは一般的に市販されているものが用いられ特に−
制限はない。If it is outside this range, there will be disadvantages such as an abnormally large coefficient of friction, generation of low-frequency abnormal noise, and vibration of the vehicle body, making it impossible to achieve the object of the present invention. In addition, commercially available tar pitch is generally used, especially -
There are no restrictions.
（他の材料）
本発明の摩擦材組成物は、上記タールピンチの他にスチ
ールファイバー、アスベスト繊維、ガラス繊維等の繊維
性物質、カシュー変性、エポキシ変性、アルキル変性等
のフェノール樹脂、メラミン変性、エポキシ変性等のフ
ェノール樹脂等の結合剤樹脂、黒鉛、二硫化モリブデン
等の潤滑剤を含有し、それに必要に応じて有機質摩擦調
整材。(Other materials) In addition to the above-mentioned tar pinch, the friction material composition of the present invention includes fibrous substances such as steel fibers, asbestos fibers, and glass fibers, phenolic resins such as cashew-modified, epoxy-modified, and alkyl-modified, melamine-modified, Contains binder resin such as phenolic resin modified with epoxy, lubricant such as graphite and molybdenum disulfide, and organic friction modifier as necessary.
硫酸バリウム、上記以外の金属粉等が添加される。Barium sulfate, metal powder other than those mentioned above, etc. are added.
（実施例） 以下実施例により本発明を説明する。(Example) The present invention will be explained below with reference to Examples.
実施例１
第１表に示す成分を配合し、混合機により均一に混合し
たのち電気オープン中で８２．５±２．５℃で２時間乾
燥し、その後粉砕して成形粉とし１次いでタブレットを
形成し、その後１５２．５±２．５℃、圧力５００ｋｇ
／ｃｍ２の条件で５分熱圧成形し。Example 1 The ingredients shown in Table 1 were blended, mixed uniformly using a mixer, dried in an electric oven at 82.5±2.5°C for 2 hours, and then crushed to form a molded powder. Formed, then 152.5±2.5℃, pressure 500kg
/cm2 for 5 minutes.
その後２００℃にて５時間焼成してセミメタリックディ
スクブレーキパッドを得た。Thereafter, it was baked at 200° C. for 5 hours to obtain a semi-metallic disc brake pad.
以
、表１表
実施例２
第２表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。Hereinafter, the components shown in Table 1 Table 1 Example 2 The components shown in Table 2 were blended and the same steps as in Example 1 were carried out to obtain a semi-metallic disc brake pad.
第２表
実施例３
第３表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。Table 2 Example 3 The components shown in Table 3 were blended and the same steps as in Example 1 were carried out to obtain a semi-metallic disc brake pad.
第３表
比較例１
タールピッチを含有せしめず第４表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゛。Table 3 Comparative Example 1 A semi-metallic disc brake pad was obtained by blending the components shown in Table 4 without containing tar pitch and following the same steps as in Example 1.
次に本発明になる摩擦材組成物を用いたセミメタリック
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について０．５ｋｍ／時
間以下の速度における摩擦係数の変動を調査した。その
調査結果を第１図および第２図に示す。第１図および第
２図かられかるように本発明になる摩擦材組成物を用い
たセミメタリンクディスクブレーキパッドは摩擦係数の
変動が減少し、かつ摩擦係数が低下することが確認され
た。これに対し従来のセミメタリックディスクブレーキ
パッドは前記で説明した如く停止寸前において摩擦係数
が異常に大きくなることが確認された。Next, variations in the coefficient of friction at speeds of 0.5 km/hour or less were investigated for the semi-metallic disc brake pad using the friction material composition of the present invention and the conventional semi-metallic disc brake pad (Comparative Example 1). The survey results are shown in Figures 1 and 2. As can be seen from FIGS. 1 and 2, it was confirmed that the semi-metallic disc brake pad using the friction material composition of the present invention has reduced fluctuations in the coefficient of friction and a decrease in the coefficient of friction. On the other hand, it has been confirmed that the friction coefficient of conventional semi-metallic disc brake pads becomes abnormally large just before stopping, as explained above.
また本発明になる摩擦材組成物を用いたセミメタリンク
ディスクブレーキパッドと従来のセミメタリンクディス
クブレーキパッドを実際の車に装着し、低周波の異音の
発生状態の比較試験を行なった。その結果を第５表に示
す。In addition, a semi-metallic disc brake pad using the friction material composition of the present invention and a conventional semi-metallic disc brake pad were installed in an actual car, and a comparative test was conducted on the generation of low-frequency noise. The results are shown in Table 5.
以下余白
第５表
◎試験条件
テスト車：（１８００ｃｃオートマチック車、温度はセ
ミメタリックディスクブレーキパッドの温度、セミメタ
リックディスクブレーキパッドの面積３８ ｃｍ” ＋
車両総重量１３２０に９゜ブレーキ形式、コレットタイ
プ〕
本発明ではセミメタリックディスクブレーキパッドに適
用した場合忙ついて説明したが２本発明は他のディスク
ブレーキパッド、ブレーキライニング等の摩擦材にりい
ても同様の効果が得られる。Table 5 with blank space below ◎Test conditions Test car: (1800cc automatic car, temperature is the temperature of semi-metallic disc brake pad, area of semi-metallic disc brake pad is 38 cm" +
9° brake type, collet type for a total vehicle weight of 1320] Although the present invention was explained as being applied to semi-metallic disc brake pads, the present invention can also be applied to other friction materials such as disc brake pads and brake linings. A similar effect can be obtained.
（発明の効果）
本発明は全組成物中にタールピッチを０．５〜１５容量
チ含有せしめたので、摩擦係数の変動が減少し、低周波
の異音及び車体振動を全く生じないか、或はらってもき
わめて小さいディスクブレーキパッド、ブレーキライニ
ング等を提供する摩擦材組成物が得られる。(Effects of the Invention) Since the present invention contains 0.5 to 15 volumes of tar pitch in the entire composition, fluctuations in the coefficient of friction are reduced, and low frequency noise and vehicle body vibration are not generated at all. Alternatively, a friction material composition can be obtained that provides disc brake pads, brake linings, etc. that are extremely small.
第１図は従来のセミメタリックディスクブレーキパッド
を使用したときの摩擦係数と速度の関係を示すグラフ、
第２図は本発明になる摩擦材組成物を用いたセミメタリ
ックディスクブレーキパッドを使用したときの摩擦係数
と速度の関係を示すグラフである。Figure 1 is a graph showing the relationship between friction coefficient and speed when using a conventional semi-metallic disc brake pad.
FIG. 2 is a graph showing the relationship between friction coefficient and speed when a semi-metallic disc brake pad using the friction material composition of the present invention is used.
Claims (1)
有せしめてなる摩擦材組成物。1. A friction material composition containing 0.5 to 15 volumes of tar pinch in the entire composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8469984A JPS60228587A (en) | 1984-04-26 | 1984-04-26 | Friction material composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8469984A JPS60228587A (en) | 1984-04-26 | 1984-04-26 | Friction material composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60228587A true JPS60228587A (en) | 1985-11-13 |
Family
ID=13837910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8469984A Pending JPS60228587A (en) | 1984-04-26 | 1984-04-26 | Friction material composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60228587A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7375158B2 (en) * | 2002-05-31 | 2008-05-20 | Dow Corning Toray Silicone Company, Ltd. | Thermoconductive curable liquid polymer composition and semiconductor device produced with the use of this composition |
| CN110872392A (en) * | 2018-08-31 | 2020-03-10 | 富士施乐株式会社 | Resin composition and resin molded article |
-
1984
- 1984-04-26 JP JP8469984A patent/JPS60228587A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7375158B2 (en) * | 2002-05-31 | 2008-05-20 | Dow Corning Toray Silicone Company, Ltd. | Thermoconductive curable liquid polymer composition and semiconductor device produced with the use of this composition |
| CN110872392A (en) * | 2018-08-31 | 2020-03-10 | 富士施乐株式会社 | Resin composition and resin molded article |
| CN110872392B (en) * | 2018-08-31 | 2023-02-03 | 伊士曼化工公司 | Resin composition and resin molded article |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2647164B2 (en) | Friction material | |
| CA1129574A (en) | High carbon friction material | |
| US4280935A (en) | Friction material comprising an iron powder having a carbon content of from 0.5-1 percent | |
| JPS59155484A (en) | Composition for friction material | |
| JPS60228587A (en) | Friction material composition | |
| JPS61168684A (en) | Friction material composition | |
| JPS5964687A (en) | Friction material composition | |
| JPS61258886A (en) | Friction material composition | |
| JP2806499B2 (en) | Friction material | |
| JPS58127774A (en) | Pad material composition for disc brake | |
| JPS6065084A (en) | Composition for friction material | |
| JPS5922984A (en) | Friction material composition | |
| JPS58136676A (en) | Composition for disc brake pad | |
| KR101066777B1 (en) | Brake friction material | |
| JPS6043387B2 (en) | Friction material composition | |
| JP2000178538A (en) | Friction material composition and friction material made by using the composition | |
| JPS58213078A (en) | Friction material composition | |
| JP2541641B2 (en) | Friction material manufacturing method | |
| JPS594462B2 (en) | Semi-metallic disc brake pad material composition | |
| US6107386A (en) | Friction materials | |
| JP2000319635A (en) | Friction material composition and friction material using this | |
| JPH10205555A (en) | Brake friction material | |
| JPS58210980A (en) | Friction material composition | |
| JPS5821031A (en) | Disc brake pad | |
| JPH08135701A (en) | Brake lining |