JPH07173454A - Friction material - Google Patents
Friction materialInfo
- Publication number
- JPH07173454A JPH07173454A JP31821293A JP31821293A JPH07173454A JP H07173454 A JPH07173454 A JP H07173454A JP 31821293 A JP31821293 A JP 31821293A JP 31821293 A JP31821293 A JP 31821293A JP H07173454 A JPH07173454 A JP H07173454A
- Authority
- JP
- Japan
- Prior art keywords
- molybdate
- friction material
- friction
- inorganic filler
- fibers
- 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.)
- Granted
Links
Landscapes
- Braking Arrangements (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車、鉄道、産業機
械等に使用されるブレーキ及びクラッチ用の非アスベス
ト系乾式摩擦材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-asbestos dry friction material for brakes and clutches used in automobiles, railways, industrial machines and the like.
【０００２】[0002]
【従来の技術】一般のブレーキやクラッチ用の摩擦材
（ブレーキパッド、ブレーキライニング、クラッチフェ
ーシング等）は、有機繊維、無機繊維（非アスベスト
系）、金属繊維等の補強繊維；フェノール樹脂等の結合
材；金属粉、樹脂粉等の摩擦調整剤；硫酸バリウム等の
無機充填材；金属酸化物、固体潤滑剤（二硫化モリブデ
ン等）、硫酸バリウム等の無機充填材を主原料として構
成されている。BACKGROUND OF THE INVENTION Friction materials for general brakes and clutches (brake pads, brake linings, clutch facings, etc.) are reinforcing fibers such as organic fibers, inorganic fibers (non-asbestos), metal fibers; binding of phenolic resin, etc. Materials; friction modifiers such as metal powder and resin powder; inorganic fillers such as barium sulfate; metal oxides, solid lubricants (molybdenum disulfide, etc.), inorganic fillers such as barium sulfate .
【０００３】しかし従来の摩擦材は、高温、高負荷の条
件で使用した場合、充分な摩擦係数を確保できないばか
りでなく、ブレーキ又はクラッチとしての効き安定性、
耐フェード性、灰化劣化防止性の点で未だ不充分であっ
た。However, when the conventional friction material is used under conditions of high temperature and high load, not only a sufficient friction coefficient cannot be ensured, but also the stability of its effectiveness as a brake or clutch,
It was still insufficient in terms of fade resistance and ash deterioration prevention.
【０００４】[0004]
【発明が解決しようとする課題】本発明は上記事情に鑑
みなされたもので、非アスベスト系摩擦材において充分
な摩擦係数を確保しながら、効き安定性、耐フェード
性、灰化劣化防止性を向上させることを課題とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances. In the non-asbestos type friction material, while ensuring a sufficient friction coefficient, it is possible to obtain effective stability, fade resistance and ashing deterioration prevention property. The challenge is to improve.
【０００５】[0005]
【課題を解決するための手段及び作用】本発明は上記課
題を解決するため、以下のような構成とした。即ち本発
明の摩擦材は、補強繊維、結合材、無機充填材、及び摩
擦調整剤を主原料とする非アスベスト系摩擦材におい
て、無機充填材としてモリブデン酸塩を含有することを
特徴とするものである。In order to solve the above problems, the present invention has the following constitution. That is, the friction material of the present invention is a non-asbestos-based friction material containing a reinforcing fiber, a binder, an inorganic filler, and a friction modifier as main materials, and containing molybdate as an inorganic filler. Is.
【０００６】以下、本発明を詳細に説明する。本発明の
摩擦材は、非アスベスト系補強繊維、結合材、モリブデ
ン酸塩を含む無機充填材、及び摩擦調整剤を主原料とし
て配合し、この配合組成物を常法に従って所望の形状に
成形したものである。The present invention will be described in detail below. The friction material of the present invention contains a non-asbestos-based reinforcing fiber, a binder, an inorganic filler containing a molybdate, and a friction modifier as main materials, and the composition is molded into a desired shape according to a conventional method. It is a thing.
【０００７】このように本発明の摩擦材には、無機充填
材としてモリブデン酸塩が含まれる。モリブデン酸塩は
無機充填材の少なくとも一部として含有されていればよ
く、その使用量は、摩擦材全量に対し０．５〜１５重量
％の範囲が適当である。モリブデン酸塩としては、モリ
ブデン酸カルシウム（ＣａＭｏＯ4）、モリブデン酸バ
リウム（ＢａＭｏＯ4）、モリブデン酸カリウム（Ｋ2Ｍ
ｏＯ4）、珪モリブデン酸（ＳｉＯ2・１２ＭｏＯ3・ｎ
Ｈ2Ｏ）等が例示できる。As described above, the friction material of the present invention contains molybdate as an inorganic filler. It suffices that the molybdate is contained as at least a part of the inorganic filler, and the amount thereof used is appropriately in the range of 0.5 to 15% by weight based on the total amount of the friction material. Examples of molybdates include calcium molybdate (CaMoO 4 ), barium molybdate (BaMoO 4 ), and potassium molybdate (K 2 M
oO 4 ), silicomolybdic acid (SiO 2 · 12MoO 3 · n
H 2 O) and the like can be exemplified.
【０００８】これらのモリブデン酸塩には公知のその他
の無機充填材が併用できる。その他の無機充填材として
は、アルミナ粉、シリカ粉等の金属酸化物粉；グラファ
イト、二硫化モリブデン等の固体潤滑剤；硫酸バリウ
ム、炭酸カルシウム、酸化マグネシウム等が挙げられ
る。これら無機充填材の使用量は通常、６〜６０重量％
（金属酸化物は０〜１０重量％、 固体潤滑材は１〜１
０重量％、その他の硫酸バリウム等は５〜４０重量％）
の範囲である。Other known inorganic fillers can be used in combination with these molybdates. Examples of other inorganic fillers include metal oxide powders such as alumina powder and silica powder; solid lubricants such as graphite and molybdenum disulfide; barium sulfate, calcium carbonate, magnesium oxide and the like. The amount of these inorganic fillers used is usually 6 to 60% by weight.
(0 to 10% by weight of metal oxide, 1-1 of solid lubricant
0% by weight, other barium sulfate etc. is 5 to 40% by weight)
Is the range.
【０００９】補強繊維としては、アラミド繊維（市販品
ではデュポン社製、商品名ケブラーがある）のような有
機繊維；セラミック繊維（アルミナ繊維、ガラス繊維
等）、ロックウール、カーボン繊維等の非アスベスト系
無機繊維；スチール繊維、銅繊維、真ちゅう繊維等の金
属繊維が挙げられる。一般に、これらの有機、無機及び
金属繊維は混合して使用され、その使用量は摩擦材全量
に対し、有機繊維では１〜１０重量％、無機繊維では０
〜３０重量％、また金属繊維では１〜２０重量％の範囲
が普通である。As the reinforcing fibers, organic fibers such as aramid fibers (commercially available from DuPont, trade name: Kevlar); ceramic fibers (alumina fibers, glass fibers, etc.), non-asbestos such as rock wool, carbon fibers, etc. Inorganic fibers; examples include metal fibers such as steel fibers, copper fibers, and brass fibers. Generally, these organic, inorganic and metal fibers are used as a mixture, and the amount thereof is 1 to 10% by weight for the organic fiber and 0 for the inorganic fiber based on the total amount of the friction material.
A range of -30% by weight and 1-20% by weight for metal fibers is common.
【００１０】結合材としては、フェノール樹脂及びその
変性品、エポキシ樹脂等の熱硬化性樹脂が使用される。
その使用量は通常、摩擦材全量に対し５〜１５重量％の
範囲である。As the binder, a thermosetting resin such as a phenol resin, a modified product thereof or an epoxy resin is used.
The amount used is usually in the range of 5 to 15% by weight based on the total amount of friction material.
【００１１】摩擦調整材としては、銅粉、真ちゅう粉、
亜鉛粉、アルミニウム粉等の金属粉；ゴム粉、レジンダ
スト（例えばカシューダスト）等の樹脂粉が挙げられ
る。一般に摩擦材全量に対し、金属粉の使用量は１〜１
０重量％、樹脂粉の使用量は０〜２０重量％（ゴム粉及
びレジンダストの使用量は各々０〜１０重量％）の範囲
である。Friction modifiers include copper powder, brass powder,
Examples thereof include metal powder such as zinc powder and aluminum powder; resin powder such as rubber powder and resin dust (for example, cashew dust). Generally, the amount of metal powder used is 1 to 1 relative to the total amount of friction material.
0% by weight, the amount of resin powder used is 0 to 20% by weight (the amount of rubber powder and resin dust used is 0 to 10% by weight, respectively).
【００１２】以上の配合組成物を一般にタブレット状に
予備成形した後、これをプレッシャープレートがセット
された熱プレスに投入して熱成形し、所定の厚さ及び密
度の成型品に仕上げる。次にこの成型品を熱処理し、更
に形状加工を行って本発明の摩擦材を得る。この場合、
予備成形は面圧１００〜５００Ｋｇｆ／ｃｍ2で行な
い、熱成形は通常、温度１３０〜１８０℃及び面圧２０
０〜１０００Ｋｇｆ／ｃｍ2で３〜１５分間程度行な
い、また熱処理は温度１５０〜３００℃で１〜１５時間
程度行なうのが普通である。After the above-mentioned compounded composition is generally preformed into a tablet shape, it is put into a hot press in which a pressure plate is set and thermoformed to obtain a molded product having a predetermined thickness and density. Next, this molded product is heat-treated and further shaped to obtain the friction material of the present invention. in this case,
The preforming is performed at a surface pressure of 100 to 500 Kgf / cm 2 , and the thermoforming is usually performed at a temperature of 130 to 180 ° C. and a surface pressure of 20.
The heat treatment is usually performed at 0 to 1000 Kgf / cm 2 for about 3 to 15 minutes, and the heat treatment is usually performed at a temperature of 150 to 300 ° C. for about 1 to 15 hours.
【００１３】その後、こうして得られた摩擦材に形状加
工を施せば、所定のブレーキパッド等が得られる。Thereafter, the friction material thus obtained is subjected to shape processing to obtain a predetermined brake pad or the like.
【００１４】[0014]
【実施例】以下に本発明を実施例によって説明する。EXAMPLES The present invention will be described below with reference to examples.
【００１５】[0015]
【実施例１〜３、比較例１〜２】表１に示す配合組成物
を充分に撹拌、混合し、これを面圧２００Ｋｇｆ／ｃｍ
2でタブレット状に予備成形した後、この予備成形物を
プレッシャープレートがセットされた熱プレスに移し、
温度１５５℃、面圧５００Ｋｇｆ／ｃｍ2で１０分間熱
成形した。次にこの成型品を２００℃で１０時間熱処理
し、更に形状加工を行ってブレーキパッドを作製した。[Examples 1 to 3 and Comparative Examples 1 and 2] Compounding compositions shown in Table 1
Is thoroughly stirred and mixed, and the surface pressure is 200 Kgf / cm.
2After preforming into a tablet shape with
Move to the heat press where the pressure plate is set,
Temperature 155 ℃, Surface pressure 500Kgf / cm2Heat for 10 minutes
Molded. Next, this molded product is heat treated at 200 ° C for 10 hours.
Then, the shape was further processed to produce a brake pad.
【００１６】[0016]
【表１】 [Table 1]
【００１７】注）Ｃａはモリブデン酸カルシウム、Ｂａ
はモリブデン酸バリウム、Ｋはモリブデン酸カリウム 次に以上の各ブレーキパッドについてフルサイズダイナ
モメーターで評価試験を行った。Note) Ca is calcium molybdate, Ba
Is barium molybdate, K is potassium molybdate Then, the above-mentioned brake pads were evaluated by a full size dynamometer.
【００１８】この時の試験片のサイズは次のとおりであ
る。 プレッシャープレートの厚さ：６ｍｍ 摩擦材試験片の厚さ：１１ｍｍ 摩擦面の面積：５７ｃｍ2 また台上試験条件として次の諸元にて効力チェック及び
フェードチェックを行った。 試験諸元： 使用ロータ：ロータの厚さ２８ｍｍ、ロータの外径０．
２７５ｍのベンチレーテッドロータ；タイヤ半径：０．
３１０ｍ 試験方法： 効力チェック（ＪＡＳＯテストコード Ｃ４０６−７
４ＰＡ） ブレーキ（ＳＣ材製ディスクロータ使用）初速度５０、
１００、１３０Ｋｍ／ｈｒ；ブレーキ温度９５℃；減速
度０．６Ｇ フェードチェック（ＪＡＳＯテストコード Ｃ４０６
−７４ＰＡ） ブレーキ速度１００Ｋｍ／ｈｒ→０Ｋｍ／ｈｒ、減速度
０．４５Ｇ、３５秒インターバル×１０回 試験結果：試験結果を表２に示す。The size of the test piece at this time is as follows. Thickness of pressure plate: 6 mm Thickness of friction material test piece: 11 mm Area of friction surface: 57 cm 2 As a bench test condition, efficacy check and fade check were performed under the following specifications. Test specifications: Rotor used: rotor thickness 28 mm, rotor outer diameter 0.
275m ventilated rotor; tire radius: 0.
310m Test method: Effectiveness check (JASO Test Code C406-7
4PA) Brake (using SC material disc rotor) Initial speed 50,
100, 130Km / hr; brake temperature 95 ° C; deceleration 0.6G fade check (JASO test code C406
-74 PA) Braking speed 100 Km / hr → 0 Km / hr, deceleration 0.45 G, 35 seconds interval × 10 times Test results: Table 2 shows the test results.
【００１９】[0019]
【表２】 注）○は問題なし、△は許容範囲内、×は問題あり、を
表す。 表２から、本発明の摩擦材はいずれも比較用の摩擦材に
比べて、低速域から高速域の何れにおいても充分な摩擦
係数を有し、かつ安定しているとともに耐フェード性に
優れている。更に、灰化劣化も殆ど発生せず、これらの
性能に優れていることが判る。[Table 2] Note) ○ means no problem, △ means acceptable, and × means problem. It can be seen from Table 2 that the friction materials of the present invention each have a sufficient friction coefficient in both the low speed range and the high speed range, are stable, and are excellent in fade resistance as compared with the comparative friction material. There is. Furthermore, it can be seen that ashing deterioration hardly occurs and these performances are excellent.
【００２０】[0020]
【発明の効果】本発明によれば、従来の摩擦材の無機充
填材にモリブデン酸塩を含有させることにより、摩擦材
として充分な摩擦係数を確保すると共に、効き安定性、
耐フェード性を向上し、また灰化劣化を防止することが
できる。According to the present invention, by adding molybdate to the inorganic filler of the conventional friction material, a sufficient friction coefficient as a friction material can be secured and the stability of the effect can be improved.
Fade resistance can be improved and ash deterioration can be prevented.
Claims (2)
擦調整剤を主原料とする非アスベスト系摩擦材におい
て、無機充填材としてモリブデン酸塩を含有することを
特徴とする摩擦材。1. A non-asbestos-based friction material comprising a reinforcing fiber, a binder, an inorganic filler, and a friction modifier as main materials, wherein the inorganic filler contains molybdate.
０．５〜１５重量％の範囲である請求項１記載の摩擦
材。2. The friction material according to claim 1, wherein the content of molybdate is in the range of 0.5 to 15% by weight based on the total weight of the friction material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31821293A JP3553629B2 (en) | 1993-12-17 | 1993-12-17 | Friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31821293A JP3553629B2 (en) | 1993-12-17 | 1993-12-17 | Friction material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07173454A true JPH07173454A (en) | 1995-07-11 |
| JP3553629B2 JP3553629B2 (en) | 2004-08-11 |
Family
ID=18096686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31821293A Expired - Fee Related JP3553629B2 (en) | 1993-12-17 | 1993-12-17 | Friction material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3553629B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190091812A (en) * | 2018-01-29 | 2019-08-07 | 주식회사 프릭사 | Brake friction material composition |
-
1993
- 1993-12-17 JP JP31821293A patent/JP3553629B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190091812A (en) * | 2018-01-29 | 2019-08-07 | 주식회사 프릭사 | Brake friction material composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3553629B2 (en) | 2004-08-11 |
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