JPH07102245A - Nonasbestos friction material - Google Patents
Nonasbestos friction materialInfo
- Publication number
- JPH07102245A JPH07102245A JP26554193A JP26554193A JPH07102245A JP H07102245 A JPH07102245 A JP H07102245A JP 26554193 A JP26554193 A JP 26554193A JP 26554193 A JP26554193 A JP 26554193A JP H07102245 A JPH07102245 A JP H07102245A
- Authority
- JP
- Japan
- Prior art keywords
- friction material
- sic
- asbestos
- sic powder
- powder
- 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
Landscapes
- Braking Arrangements (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車又は産業機械等
のブレーキパッド、ブレーキライニング，クラッチフェ
ーシング等として使用されている摩擦材であって、摩擦
材が高温時または高速のブレーキ制動時における耐摩耗
性が優れた非石綿系摩擦材に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a friction material used as a brake pad, a brake lining, a clutch facing of an automobile or an industrial machine, etc., and the friction material is resistant to high temperature or high speed braking. The present invention relates to a non-asbestos-based friction material having excellent wear properties.
【０００２】[0002]
【従来の技術】石綿を使用しない非石綿系摩擦材の多く
は繊維成分として耐熱性有機繊維、ガラス繊維、金属繊
維等を用い、結合材としてフェノール樹脂等の熱硬化性
樹脂を、充填材として黒鉛、硫酸バリウム、アルミナ等
を用いたものである。摩擦材が高温時または高速のブレ
ーキ制動時に優れた耐摩耗性を示す非石綿系摩擦材の代
表的なものとしてスチール繊維を多量に含むセミメタリ
ック系摩擦材が挙げられる。しかしながらスチール繊維
を多く用いた摩擦材は強度も高く耐フェード性に優れて
いるものの熱伝導率が高く、また異音が発生しやすいと
いう問題点がある。セミメタリック系以外の非石綿系摩
擦材についても充填材成分としてアルミナ等の硬度の高
い粉末を用いれば高温時、高速時の摩擦材の耐摩耗性は
向上するがその反面、ロータ等相手材への対面攻撃性が
大きくなるという欠点がある。2. Description of the Related Art Most non-asbestos friction materials that do not use asbestos use heat-resistant organic fibers, glass fibers, metal fibers, etc. as fiber components, and thermosetting resins such as phenol resins as fillers as binders. Graphite, barium sulfate, alumina, etc. are used. A typical example of the non-asbestos-based friction material, in which the friction material exhibits excellent wear resistance at high temperature or high-speed braking, is a semi-metallic friction material containing a large amount of steel fibers. However, although the friction material using a large amount of steel fibers has high strength and excellent fade resistance, it has a problem that it has high thermal conductivity and is prone to abnormal noise. For non-asbestos friction materials other than semi-metallic ones, if a powder with high hardness such as alumina is used as the filler component, the wear resistance of the friction material at high temperatures and high speeds will improve, but on the other hand There is a drawback that the face-to-face aggression of is increased.
【０００３】[0003]
【発明が解決しようとする課題】そこで本発明は摩擦材
が高温時あるいは高速のブレーキ制動時において他のブ
レーキ性能を損なうことなく摩擦材の耐摩耗性が優れた
非石綿系摩擦材を提供することである。SUMMARY OF THE INVENTION Therefore, the present invention provides a non-asbestos-based friction material having excellent wear resistance of the friction material without impairing other braking performance when the friction material is at high temperature or at high speed braking. That is.
【０００４】[0004]
【問題を解決するための手段】本発明は上記の課題を解
決することを目的としてなされたもので、その構成はア
ラミド繊維等の繊維成分とフェノール樹脂等の熱硬化性
樹脂成分と黒鉛、硫酸バリウム等の充填材成分とを含有
する非石綿系摩擦材において、その充填材成分の少なく
とも一部にＡｌとＳｉＣが物理的に結合したＡｌ−Ｓｉ
Ｃ粉末を含むことを特徴とするものである。即ち、本発
明の発明者らは摩擦材が高温時あるいは高速のブレーキ
制動時において耐摩耗性が優れている非石綿系摩擦材を
得ることを目的として研究を重ねた結果、充填材の一部
にＡｌ−ＳｉＣ粉末を含ませることにより上記の目的を
達成できることを知得し、本発明を成し遂げたのであ
る。SUMMARY OF THE INVENTION The present invention has been made for the purpose of solving the above-mentioned problems, and its constitution is a fiber component such as aramid fiber and a thermosetting resin component such as phenol resin, graphite and sulfuric acid. In a non-asbestos-based friction material containing a filler component such as barium, Al-Si in which Al and SiC are physically bound to at least a part of the filler component.
It is characterized by containing C powder. That is, the inventors of the present invention have conducted a study for the purpose of obtaining a non-asbestos-based friction material in which the friction material has excellent wear resistance at high temperatures or during high-speed braking, and as a result, a part of the filler is The inventors have realized that the above object can be achieved by including Al-SiC powder in, and have accomplished the present invention.
【０００５】Ａｌ−ＳｉＣ粉末は９０％以上が粒径４０
〜５００μｍの範囲に入り、かつＡｌ−ＳｉＣ粉末の一
部を構成するＳｉＣは９０％以上が粒径５μｍ〜４０μ
ｍの範囲であることが望ましい。１粒のＡｌ−ＳｉＣ粉
末の構造はＡｌとＳｉＣが物理的に結合したもので、例
えばアトマイズ法により作製することができる。Ａｌ−
ＳｉＣ粉末に含まれるＳｉＣはＡｌ−ＳｉＣ粉末全体に
対し５〜５０重量％であることが望ましく、ＳｉＣが多
い場合は対面攻撃性が悪化し、少ない場合は耐摩耗性に
関する効果が少なくなる。しかし、Ａｌ粉末及びＳｉＣ
粉末を同時に用いた場合はＡｌ−ＳｉＣ粉末を用いた場
合と状況が異なり、高温時あるいは高速時において優れ
た耐摩耗性は得られない。90% or more of the Al-SiC powder has a particle size of 40.
˜500 μm, and 90% or more of SiC constituting a part of the Al—SiC powder has a particle size of 5 μm to 40 μm.
The range of m is desirable. The structure of one grain of Al-SiC powder is a physical combination of Al and SiC, and can be produced, for example, by the atomization method. Al-
The amount of SiC contained in the SiC powder is preferably 5 to 50% by weight with respect to the entire Al-SiC powder, and when the amount of SiC is large, the face-to-face aggression is deteriorated, and when the amount of SiC is small, the effect on wear resistance is reduced. However, Al powder and SiC
When the powders are used at the same time, the situation is different from when Al-SiC powder is used, and excellent wear resistance cannot be obtained at high temperature or high speed.
【０００６】而して本発明において繊維成分として使用
されるものにはアラミド繊維等の有機繊維、ガラス繊
維，ロックウール，セラミックス繊維等の無機繊維、
銅，青銅，アルミニウム，黄銅等の金属繊維が挙げら
れ、結合材としてはフェノール樹脂，尿素樹脂，メラミ
ン樹脂，またはそれらの変性樹脂のような熱硬化性樹脂
が挙げられ、充填材としては上記Ａｌ−ＳｉＣ粉末の
他、黒鉛，金属粉，カシューダストのような潤滑性のあ
るものや硫酸バリウム，炭酸カルシウム等が挙げられ
る。摩擦材組成物の予備成型、加熱加圧成型、熱処理の
条件については特に制限はなく、従来の方法で行なうこ
とができる。Thus, the fiber components used in the present invention include organic fibers such as aramid fibers, inorganic fibers such as glass fibers, rock wool and ceramic fibers,
Examples include metal fibers such as copper, bronze, aluminum, and brass, examples of the binder include thermosetting resins such as phenol resin, urea resin, melamine resin, and modified resins thereof, and examples of the filler include Al described above. In addition to SiC powder, graphite, metal powder, lubricants such as cashew dust, barium sulfate, calcium carbonate and the like can be mentioned. There are no particular restrictions on the conditions for pre-molding, heat-press molding, and heat treatment of the friction material composition, and conventional methods can be used.
【０００７】[0007]
【発明の作用】本発明摩擦材は充填材成分にＡｌ−Ｓｉ
Ｃ粉末を含むので摩擦材が高温時あるいは高速のブレー
キ制動時において耐摩耗性が向上する。The friction material of the present invention contains Al-Si as the filler component.
Since it contains C powder, the wear resistance of the friction material is improved when the friction material is at a high temperature or at high speed braking.
【０００８】[0008]
【実施例】次に本発明の実施例について説明する。繊維
成分としてスチール繊維を、結合材としてフェノール樹
脂を用い、充填材としてＡｌ−ＳｉＣ粉末の他、グラフ
ァイト、二硫化モリブデン、硫化モリブデン、硫酸バリ
ウムを用いて撹拌機によりこれらを均一に混合し実施例
用の摩擦材料混合品を得た。Ａｌ−ＳｉＣ粉末は、Ｓｉ
ＣがＡｌ−ＳｉＣ粉末全体に対し２５重量％のものを使
用した。続いて摩擦材料混合品を室温、圧力４００kg／
cm2 で予備成型した後、温度１６０℃、圧力４００kg／
cm2 で８分間加熱加圧成型し、次いで温度１８０℃で５
時間熱処理して表１に示す組成の実施例Ａ〜Ｃの中型車
用摩擦材を得た。尚、表中の数値は体積％を示す。また
Ａｌ−ＳｉＣ粉末を用いない比較例ａ〜ｄの中型車用摩
擦材を同様にして得た。Ａｌ粉末，ＳｉＣ粉末混合物
は、実施例と同様にＳｉＣが粉末混合物全体に対し２５
重量％のものを使用した。EXAMPLES Next, examples of the present invention will be described. An example in which steel fiber was used as the fiber component, phenol resin was used as the binder, Al-SiC powder was used as the filler, and graphite, molybdenum disulfide, molybdenum sulfide, and barium sulfate were uniformly mixed by a stirrer A friction material mixture for use was obtained. Al-SiC powder is Si
The C content was 25% by weight based on the entire Al-SiC powder. Subsequently, the friction material mixture is placed at room temperature and pressure of 400 kg /
After preforming with cm 2 , the temperature is 160 ℃, the pressure is 400kg /
Heat press molding at cm 2 for 8 minutes, then at a temperature of 180 ℃ 5
After heat treatment for a period of time, friction materials for medium-sized vehicles of Examples A to C having the compositions shown in Table 1 were obtained. In addition, the numerical value in a table shows volume%. Further, the friction materials for medium-sized vehicles of Comparative Examples a to d which did not use Al-SiC powder were obtained in the same manner. As for the Al powder and SiC powder mixture, SiC is 25 with respect to the entire powder mixture as in the example.
The thing of the weight% was used.
【０００９】上記の方法により作製した実施例Ａ〜Ｃ及
び比較例ａ〜ｄの摩擦材をフルサイズダイナモ試験機に
よる摩耗試験（ＪＡＳＯ Ｃ４２７−８３，イナ−シャ
４０ｋｇｍｓ2 ）によりテストを行なった結果を表２及
び表３に示す。表２は各温度または速度における摩擦材
の摩耗量を、表３は各温度または速度におけるロータの
摩耗量を示したものである。尚、表３において−の数値
は摩擦材の一部がロータに付着したことを表している。The friction materials of Examples A to C and Comparative Examples a to d produced by the above method were tested by a wear test (JASO C427-83, inertia 40 kgms 2 ) using a full size dynamo tester. Are shown in Tables 2 and 3. Table 2 shows the wear amount of the friction material at each temperature or speed, and Table 3 shows the wear amount of the rotor at each temperature or speed. In Table 3, the minus value indicates that a part of the friction material adhered to the rotor.
【００１０】[0010]
【発明の作用】以上のように本発明摩擦材は、アラミド
繊維等の有機繊維やロックウール等の無機繊維、銅繊維
等の金属繊維、フェノール樹脂等の結合材及び黒鉛、硫
酸バリウム等の充填材から成るもので、充填材成分の少
なくとも一部にＡｌ−ＳｉＣ粉末を含ませた結果、摩擦
材が高温時あるいは高速のブレーキ制動時において対面
攻撃性を損なうことなく耐摩耗性が向上するので自動車
又は産業機械等のブレーキパッド、ブレーキライニン
グ，クラッチフェーシング等に使用する摩擦材として好
適である。As described above, the friction material of the present invention is filled with organic fiber such as aramid fiber, inorganic fiber such as rock wool, metal fiber such as copper fiber, binder such as phenol resin and graphite, barium sulfate and the like. As a result of including Al-SiC powder in at least a part of the filler component, the friction material has improved wear resistance without impairing face-to-face aggression at high temperatures or during high-speed braking. It is suitable as a friction material used for brake pads, brake linings, clutch facings, etc. of automobiles or industrial machines.
【００１１】[0011]
【表１】 [Table 1]
【００１２】[0012]
【表２】 [Table 2]
【表３】 [Table 3]
Claims (4)
樹脂成分と、黒鉛、硫酸バリウム等の充填材成分とを含
有する非石綿系摩擦材において、充填材の少なくとも一
部にＡｌ−ＳｉＣ粉末を含むことを特徴とする非石綿系
摩擦材。1. A non-asbestos-based friction material containing a fiber component, a thermosetting resin component such as a phenol resin, and a filler component such as graphite and barium sulfate. Al-SiC powder is used as at least a part of the filler. A non-asbestos friction material characterized by containing.
０．５〜３０体積％であることを特徴とする請求項１に
記載の非石綿系摩擦材。2. The non-asbestos-based friction material according to claim 1, wherein the Al-SiC powder is 0.5 to 30% by volume with respect to the entire friction material.
ｌ−ＳｉＣ粉末全体に対し５〜５０重量％であることを
特徴とする請求項１に記載の非石綿系摩擦材。3. The SiC contained in the Al--SiC powder is A
The non-asbestos-based friction material according to claim 1, wherein the content is 5 to 50% by weight based on the total weight of the 1-SiC powder.
０〜５００μｍの範囲内で、かつＡｌ−ＳｉＣ粉末の一
部を構成するＳｉＣの９０％以上が粒径５〜４０μｍの
範囲内であることを特徴とする請求項１に記載の非石綿
系摩擦材。4. 90% or more of Al-SiC powder has a particle size of 4
The non-asbestos-based friction according to claim 1, characterized in that within a range of 0 to 500 μm, 90% or more of SiC constituting a part of the Al—SiC powder has a particle size within a range of 5 to 40 μm. Material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26554193A JPH07102245A (en) | 1993-09-30 | 1993-09-30 | Nonasbestos friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26554193A JPH07102245A (en) | 1993-09-30 | 1993-09-30 | Nonasbestos friction material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07102245A true JPH07102245A (en) | 1995-04-18 |
Family
ID=17418562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26554193A Pending JPH07102245A (en) | 1993-09-30 | 1993-09-30 | Nonasbestos friction material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07102245A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013180315A1 (en) * | 2012-05-29 | 2013-12-05 | 日清紡ブレーキ株式会社 | Friction material |
-
1993
- 1993-09-30 JP JP26554193A patent/JPH07102245A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013180315A1 (en) * | 2012-05-29 | 2013-12-05 | 日清紡ブレーキ株式会社 | Friction material |
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