JPH02298576A - Nonasbestos-based friction material - Google Patents
Nonasbestos-based friction materialInfo
- Publication number
- JPH02298576A JPH02298576A JP1117540A JP11754089A JPH02298576A JP H02298576 A JPH02298576 A JP H02298576A JP 1117540 A JP1117540 A JP 1117540A JP 11754089 A JP11754089 A JP 11754089A JP H02298576 A JPH02298576 A JP H02298576A
- Authority
- JP
- Japan
- Prior art keywords
- friction material
- composition
- fiber
- asbestos
- 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.)
- Pending
Links
- 239000002783 friction material Substances 0.000 title claims abstract description 35
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 239000000835 fiber Substances 0.000 claims abstract description 16
- 239000010425 asbestos Substances 0.000 claims abstract description 11
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 11
- 229920005989 resin Polymers 0.000 claims abstract description 8
- 239000011347 resin Substances 0.000 claims abstract description 8
- 239000005011 phenolic resin Substances 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims abstract description 6
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 229920006231 aramid fiber Polymers 0.000 claims abstract description 5
- 239000003365 glass fiber Substances 0.000 claims abstract description 5
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 5
- 239000000314 lubricant Substances 0.000 claims abstract description 5
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 5
- 239000003082 abrasive agent Substances 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 claims description 7
- 239000004760 aramid Substances 0.000 claims description 4
- 239000007770 graphite material Substances 0.000 claims 1
- 239000010439 graphite Substances 0.000 abstract description 4
- 239000008187 granular material Substances 0.000 abstract description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 abstract description 2
- 238000013016 damping Methods 0.000 abstract description 2
- 238000005204 segregation Methods 0.000 description 6
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000007580 dry-mixing Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 239000012254 powdered material Substances 0.000 description 1
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る摩擦材で
あって、繊維成分として石綿を含まず、摩擦係数が安定
し、鳴き特性の良好な非石綿糸摩擦材に関するものであ
る。[Detailed Description of the Invention] [Field of Industrial Application] The present invention is a friction material used as brake pads, brake linings, clutch facings, etc. of automobiles, which does not contain asbestos as a fiber component and has a low coefficient of friction. This invention relates to a non-asbestos yarn friction material that is stable and has good squeal characteristics.
一般に、摩擦材は成形に先だってその組成物を混合して
予備混合物とし、これをブレーキパッド。Generally, before molding a friction material, its composition is mixed to form a premix, and this is used as a brake pad.
ブレーキライニング等に成形して使用するものであるが
、摩擦材組成物は、繊維状物２粒状物、粉末状物等形状
の異なるものが混在しており、それぞれの比重も異なる
ために、特に乾式混合法を採用する予備混合物では、組
成物の偏析が起こりやすく、そのため、その成形物は摩
擦係数が不安定となり、この不安定さが制動時に鳴きの
発生を助長するという問題点がある。Friction material compositions are used by forming them into brake linings, etc., but since they contain a mixture of different shapes such as fibrous materials, granular materials, and powdered materials, and the specific gravity of each material is also different, it is especially difficult to use. In a premix prepared by a dry mixing method, segregation of the composition is likely to occur, and as a result, the molded product has an unstable coefficient of friction, and this instability promotes squealing during braking.
本発明は上記の問題点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、石綿を除くアラミド繊維、ガ
ラス繊維、スチール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、黒鉛等の無機潤滑材と、ケ
イ酸ジルコニウム等の研磨材及び充填材粉末成分から成
る摩擦材において、前記組成物を５０μｍ以上の一体予
備混合粒とし、これを適量含有させたことを特徴とする
ものである。The present invention was made with the aim of solving the above problems, and consists of fiber components such as aramid fibers, glass fibers, and steel fibers excluding asbestos, and thermosetting resin components such as phenolic resins. , a friction material consisting of an inorganic lubricant such as graphite, an abrasive material such as zirconium silicate, and a filler powder component, characterized in that the composition is formed into integral premixed particles of 50 μm or more and contains an appropriate amount of the same. It is something to do.
即ち、本発明の発明者は、摩擦係数が安定し、制動時の
鳴き特性が良好な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、摩擦材を構成する各種組成物の偏
析を抑制することにより、摩擦係数が安定すると共に、
制動時における鳴きの発生を抑制できることを知得し、
本発明をなし遂げたのである。That is, as a result of repeated research aimed at obtaining a non-asbestos friction material with a stable friction coefficient and good squeal characteristics during braking, the inventors of the present invention discovered that the segregation of various compositions constituting the friction material was By suppressing this, the coefficient of friction becomes stable, and
We learned that it is possible to suppress squeal when braking,
This invention has been achieved.
次に本発明について詳細に説明する。Next, the present invention will be explained in detail.
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、チタン酸力り、ガラス繊維
、セラミックス繊維等の無機繊維。In the present invention, those used as fiber components include:
Organic fibers such as aramid fibers, inorganic fibers such as titanate fibers, glass fibers, and ceramic fibers.
スチール繊維、真鍮繊維等の金属繊維が挙げられる。Examples include metal fibers such as steel fibers and brass fibers.
また、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
脂や、ポリアセタール、芳香族ボ、ｌ リイ
ミド樹脂、フッ素樹脂等の耐熱性樹脂が使用できる。Further, as the binder, thermosetting resins such as phenol resin, urea resin, melamine resin, or modified resins thereof, and heat-resistant resins such as polyacetal, aromatic resin, l-imide resin, and fluororesin can be used.
更に、摩擦調整剤及び充填材としては、黒鉛。Additionally, graphite is used as a friction modifier and filler.
二硫化モリブデンのような無機潤滑材やケイ酸ジルコニ
ウム等の研磨材、硫酸バリウム、金属粒等が挙げられる
。Examples include inorganic lubricants such as molybdenum disulfide, abrasives such as zirconium silicate, barium sulfate, and metal particles.
而して、本発明非石綿系摩擦材は、上記の摩擦材材料の
中から、例えば、アラミド繊維、ガラス繊維、スチール
繊維、フェノール樹脂、銅粒、ケイ酸ジルコニウ１１．
硫酸バリウムを選択し、これに適宜の充填材を加えた摩
擦材組成物を混合して予備混合物とし、これにフェノー
ル樹脂に対する１ヘリクレン等の有゛機溶剤を適当量添
力几て混合した後、乾燥して造粒するという通常の湿式
摩擦材製造工程と同様にして５０μｍ以上の組成物の偏
析のない一体予備混合粒を製造し、この一体予備混合粒
の適量を前記予備混合物中に含有させたものであって、
その含有量は、摩擦材全量の５〜７０％の範囲とするこ
とが望ましい。その理由は、この範囲を超えると、材料
の強度が低下するという不具合が生じ、この範囲以下に
すると、目的とする効果が充分に得られないからである
。The non-asbestos friction material of the present invention can be made of, for example, aramid fibers, glass fibers, steel fibers, phenolic resins, copper grains, zirconium silicate, etc. from the above-mentioned friction material materials.
After selecting barium sulfate and mixing it with a friction material composition containing an appropriate filler to form a premix, adding an appropriate amount of an organic solvent such as 1-hericlene to the phenol resin and mixing. In the same manner as the normal wet friction material manufacturing process of drying and granulating, integral premixed particles with a composition of 50 μm or more and no segregation are produced, and an appropriate amount of the integral premixed particles are contained in the premix. It is something that has been caused by
The content thereof is preferably in the range of 5 to 70% of the total amount of the friction material. The reason is that if it exceeds this range, there will be a problem that the strength of the material will decrease, and if it is below this range, the desired effect will not be sufficiently obtained.
本発明摩擦材は非石綿系摩擦材であって、摩擦材組成物
を５０μｍ以上の一体予備混合粒として偏析を防止した
ものを、前記摩擦材組成物の予備混合物と混合して摩擦
材としたから、制動時の加圧力が摩擦材内部で均一に分
散し易く、摩擦材のダンピング特性が良好となり、鳴き
特性が向」ニする。The friction material of the present invention is a non-asbestos-based friction material, in which the friction material composition is made into integral premixed particles of 50 μm or more to prevent segregation, and is mixed with the premix of the friction material composition to form a friction material. Therefore, the applied force during braking is easily dispersed uniformly inside the friction material, and the damping characteristics of the friction material are improved, resulting in improved squeal characteristics.
次に本発明の実施例について説明する。 Next, examples of the present invention will be described.
表１に示す組成の摩擦材の予備混合物と一体予備混合粒
を造り、これらにより実施例１．ｎ、ｍ及び比較例の摩
擦材を作って、それらの性能を調べたところ、表２の通
りであった。A premix of a friction material having the composition shown in Table 1 and integral premix particles were prepared, and these were used in Example 1. Friction materials of n, m and comparative examples were made and their performances were investigated, and the results are as shown in Table 2.
−４＝
◎・・優、０・・・良、△・・やや良、×・・不良〔発
明の効果〕
本発明は上述の通りであって、石綿を除くアラミド繊維
、ガラス繊維、スチール繊維等の繊維成分と、フェノー
ル松脂等の熱硬化性樹脂成分と、黒鉛等の無機潤滑材と
、ケイ酸ジルコニウム等の研磨材及び充填材粉末成分か
ら成る非石綿系摩擦材において、前記組成物を５０μｍ
以上の一体予備混合粒として材料の偏析をなくし、その
適旦を１）１１記組成物の予備混合物と混合して摩擦材
を構成することにより、組成物の偏析に起因する摩擦係
数の不安定を解消したから、この摩擦材をブレーキパッ
トに形成して使用した場合、制動時におけるブレーキの
鳴き特性は著しく向上する。-4 = ◎...Excellent, 0...Good, △...Slightly good, ×...Poor A non-asbestos friction material consisting of a fiber component such as, a thermosetting resin component such as phenolic resin, an inorganic lubricant such as graphite, an abrasive such as zirconium silicate, and a filler powder component, 50μm
By eliminating the segregation of the materials as the above-mentioned integral premixed grains and appropriately mixing them with the premix of the composition described in 1) 11 to form a friction material, the friction coefficient becomes unstable due to the segregation of the composition. Since this problem has been solved, when this friction material is formed into a brake pad and used, the brake squeal characteristics during braking are significantly improved.
従って、本発明非石綿系摩擦材は、自動車のブレーキパ
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。Therefore, the non-asbestos friction material of the present invention is suitable as a friction material for use in automobile brake pads, brake linings, clutch facings, etc.
Claims (1)
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、黒鉛等の無機潤滑材と、ケイ酸ジルコニウム等の
研磨材及び充填材粉末成分から成る摩擦材において、前
記組成物を５０μｍ以上の一体予備混合粒とし、これを
適量含有させたことを特徴とする非石綿系摩擦材。 ２ 摩擦材組成物の一体予備混合粒の含有量を、摩擦材
全量に対して５〜７０体積％としたことを特徴とする請
求項１に記載の非石綿系摩擦材。[Scope of Claims] 1. Fiber components such as aramid fibers, glass fibers, and steel fibers excluding asbestos, thermosetting resin components such as phenolic resins, inorganic lubricants such as graphite, and abrasive materials such as zirconium silicate. and a filler powder component, characterized in that the composition is formed into integral premixed particles of 50 μm or more, and contains an appropriate amount of the composition. 2. The non-asbestos friction material according to claim 1, wherein the content of the integral premixed particles of the friction material composition is 5 to 70% by volume based on the total amount of the friction material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1117540A JPH02298576A (en) | 1989-05-12 | 1989-05-12 | Nonasbestos-based friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1117540A JPH02298576A (en) | 1989-05-12 | 1989-05-12 | Nonasbestos-based friction material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02298576A true JPH02298576A (en) | 1990-12-10 |
Family
ID=14714326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1117540A Pending JPH02298576A (en) | 1989-05-12 | 1989-05-12 | Nonasbestos-based friction material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02298576A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1388684A1 (en) * | 2002-08-07 | 2004-02-11 | Nisshinbo Industries, Inc. | Non-asbestos friction material |
| CN100351290C (en) * | 2004-11-30 | 2007-11-28 | 韩国轮胎株式会社 | Steel friction material composition for raceing car |
-
1989
- 1989-05-12 JP JP1117540A patent/JPH02298576A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1388684A1 (en) * | 2002-08-07 | 2004-02-11 | Nisshinbo Industries, Inc. | Non-asbestos friction material |
| CN100351290C (en) * | 2004-11-30 | 2007-11-28 | 韩国轮胎株式会社 | Steel friction material composition for raceing car |
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