JPH03185032A - Nonasbestos-based friction material - Google Patents
Nonasbestos-based friction materialInfo
- Publication number
- JPH03185032A JPH03185032A JP32267989A JP32267989A JPH03185032A JP H03185032 A JPH03185032 A JP H03185032A JP 32267989 A JP32267989 A JP 32267989A JP 32267989 A JP32267989 A JP 32267989A JP H03185032 A JPH03185032 A JP H03185032A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- friction material
- component
- asbestos
- zirconium oxide
- 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 37
- 239000000835 fiber Substances 0.000 claims abstract description 50
- 239000010425 asbestos Substances 0.000 claims abstract description 23
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 23
- 239000000919 ceramic Substances 0.000 claims abstract description 18
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 14
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910001928 zirconium oxide Inorganic materials 0.000 claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- 239000005011 phenolic resin Substances 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000010439 graphite Substances 0.000 claims abstract description 7
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims abstract description 6
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 6
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims abstract description 5
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229920006231 aramid fiber Polymers 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000011490 mineral wool Substances 0.000 claims description 4
- 239000004760 aramid Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000012784 inorganic fiber Substances 0.000 claims description 3
- 229910001369 Brass Inorganic materials 0.000 claims description 2
- 229910000906 Bronze Inorganic materials 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000010951 brass Substances 0.000 claims description 2
- 239000010974 bronze Substances 0.000 claims description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000758 substrate Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 7
- 239000011230 binding agent Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 244000226021 Anacardium occidentale Species 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 235000020226 cashew nut Nutrition 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000155 melt 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
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
- Manufacture Of Macromolecular Shaped Articles (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５強度が高い上に
摩擦性能も良好な非石綿系摩擦材に関するものである。[Detailed Description of the Invention] [Industrial Field of 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 high strength. The present invention also relates to a non-asbestos friction material that also has good friction performance.
従来、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される摩擦材は、その基
材として石綿が多く使用されているが、石綿はその粉塵
が人体への有害性を指摘された結果、その使用を規制さ
れつつあり、石綿を使用しない摩擦材に対する要求が強
くなってきている。Conventionally, automobile brake pads, brake linings,
Asbestos is often used as a base material for friction materials used in clutch facings, etc., but as it has been pointed out that asbestos dust is harmful to the human body, its use is being regulated, and asbestos There is a growing demand for friction materials that do not require the use of friction materials.
そこで、石綿を使用しない非石綿系摩擦材について多く
の提案がなされているが、それらの多くは繊維成分とし
て耐熱性有機繊維、ガラス繊維。Therefore, many proposals have been made for non-asbestos-based friction materials that do not use asbestos, but most of them use heat-resistant organic fibers or glass fibers as fiber components.
金属繊維を用い、結合材としてフェノール樹脂等の熱硬
化性樹脂を、充填材粉末成分として黒鉛。Metal fiber is used, thermosetting resin such as phenolic resin is used as the binding material, and graphite is used as the filler powder component.
硫酸バリウム、アルミナ等を用いたものである。It uses barium sulfate, alumina, etc.
然し乍ら、結合材として上記のフェノール樹脂等の熱硬
化性樹脂を使用した摩擦材は、高温下では前記樹脂が溶
融または分解してガスが発生し、フェード現象を起こし
て摩擦係数が不安定になるばかりでなく、強度も比較的
低いという問題がある。この問題を解決するために、前
記樹脂成分を摩擦材全量の１５〜２５体積％と少量に抑
えているのが現状であるが、有機結合材を減少させると
、摩擦材の強度及び耐摩耗性の低下を避けることは出来
なかった。However, in friction materials that use thermosetting resins such as the above-mentioned phenolic resins as binders, the resin melts or decomposes under high temperatures, generating gas, causing a fade phenomenon and making the coefficient of friction unstable. In addition, there is a problem that the strength is relatively low. In order to solve this problem, the resin component is currently kept to a small amount of 15 to 25% by volume of the total amount of the friction material, but reducing the organic binder increases the strength and wear resistance of the friction material. It was not possible to avoid a decline in
即ち、非石綿系の摩擦材にあっては、石綿系の摩擦材に
比して結合材の量を多くしないと、摩擦材としての充分
む強度を得られないのである。In other words, in a non-asbestos-based friction material, sufficient strength as a friction material cannot be obtained unless the amount of binder is increased compared to an asbestos-based friction material.
そこで、繊維成分中に鉄系繊維を含ませたものも考えら
れたが、鉄系繊維を用いた摩擦材は一般に熱伝導率が高
く、高温時の耐摩耗性や耐フエード性などには優れてい
るものの、重量が重かったり、高温時に発火するという
問題点があるばかりでなく、ディスクロータなどの相手
材に対する攻撃性があるし、更に、摩擦材層と裏金とを
接着する接着材層の温度が上昇して接着材が分解し、摩
擦材と裏金とが剥離して、危険を招来するおそれがある
。Therefore, it has been considered to include iron-based fibers in the fiber component, but friction materials using iron-based fibers generally have high thermal conductivity and are excellent in wear resistance and fade resistance at high temperatures. However, it not only has the problems of being heavy and igniting at high temperatures, but also being aggressive to other materials such as disc rotors.Furthermore, the adhesive layer that bonds the friction material layer and backing metal As the temperature rises, the adhesive material decomposes, and the friction material and backing metal may separate, creating a danger.
従って、本発明が解決しようとする課題は、上記の非石
綿系摩擦材において、強度が良好で摩擦性能の良好な摩
擦材を提供することである。Therefore, the problem to be solved by the present invention is to provide the above-mentioned non-asbestos friction material which has good strength and good friction performance.
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、石綿以外の繊維成分と、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
ム等の充填材粉末成分とを含有する摩擦材において、繊
維成分の少なくとも一部に酸化ジルコニウムを含んだセ
ラミック繊維を含むことを特徴とするものである。The present invention has been made with the aim of solving the above problems, and is composed of a fiber component other than asbestos, a thermosetting resin component such as phenol resin, and filler powder such as graphite and barium sulfate. The friction material is characterized in that at least a portion of the fiber component contains ceramic fibers containing zirconium oxide.
即ち、本発明の発明者は１強度が高く、摩擦性能の優れ
た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、繊維成分において、その−部に酸化ジルコニウム
を含んだセラミック繊維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、本発明をなし遂げたの
である。That is, the inventor of the present invention conducted repeated research with the aim of obtaining a non-asbestos friction material with high strength and excellent friction performance, and found that ceramic fibers containing zirconium oxide in the fiber component They have realized that the above object can be achieved by including the above, and have accomplished the present invention.
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２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るが、本発
明において特に重要なものはセラミック繊維であり、こ
のセラミック繊維は少なくともその一部に酸化ジルコニ
ウムを含んだものでなけれればならず、酸化ジルコニウ
ム成分の含有量は１〜１５重量％が望ましい。前記量よ
り少ないと酸化ジルコニウムによる効果が損なわれ、ま
た、多いとセラミック繊維を形成することが困難である
からである。In the present invention, the fiber components used include organic fibers such as 2-aramid fibers, inorganic fibers such as glass fibers, rock wool, and ceramic fibers, copper, bronze,
Examples include metal fibers such as aluminum and brass, but ceramic fibers are particularly important in the present invention, and this ceramic fiber must contain zirconium oxide at least in part, and the zirconium oxide component The content is preferably 1 to 15% by weight. This is because if the amount is less than the above amount, the effect of zirconium oxide will be impaired, and if it is more than the above amount, it will be difficult to form ceramic 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、芳香族ポリイミド樹脂、フッ素
樹脂等の耐熱性樹脂が挙げられ、充填材としては、黒鉛
、金属粉、二硫化モリブデン、カシューダストのような
潤滑作用のあるものや、硫酸バリウム、炭酸カルシウム
等が挙げられる。In addition, examples of binders include thermosetting resins such as phenol resins, urea resins, melamine resins, and modified resins thereof, and heat-resistant resins such as polyacetals, aromatic polyimide resins, and fluororesins. Examples of the lubricating material include graphite, metal powder, molybdenum disulfide, and cashew dust, as well as barium sulfate and calcium carbonate.
本発明摩擦材は非石綿系摩擦材であって、繊維成分の一
部に酸化ジルコニウムを含ませたセラミック繊維を用い
ることにより、摩擦材の強度が向上し、摩擦性能も向上
する。The friction material of the present invention is a non-asbestos friction material, and by using ceramic fibers containing zirconium oxide as part of the fiber component, the strength of the friction material is improved and the friction performance is also improved.
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.
結合材としてフェノール樹脂を、充填材として黒鉛、硫
酸バリウムをそれぞれ用い、繊維基材として、アラミド
繊維、ロックウール、銅繊維のほか、酸化ジルコニウム
を１０重量％含有させた５ｉｎ２とＡｌ、０３を主成分
とするセラミック繊維Ａ（繊維径４〜６μ）、酸化ジル
コニウムを３重量％含有させた上記と同様のセラミック
繊維Ｂを用いて、実施例１．ＩＩの摩擦材を、また、セ
ラミック繊維を用いない比較例の摩擦材をそれぞれ作り
、それらの性能を調べたところ１次表の通りであった。Phenol resin is used as a binder, graphite and barium sulfate are used as fillers, and the fiber base materials are mainly 5in2 and Al, 03 containing 10% by weight of zirconium oxide, in addition to aramid fiber, rock wool, and copper fiber. Example 1 was prepared using ceramic fiber A (fiber diameter 4 to 6 μm) as a component and ceramic fiber B similar to the above containing 3% by weight of zirconium oxide. A friction material II and a comparative friction material using no ceramic fibers were prepared, and their performances were investigated, and the results were as shown in the following table.
尚。still.
上記の第二効力は減速度０．６Ｇの値であり、フルサイ
ズダイナモ試験機により測定した。The above-mentioned second efficacy is a value at a deceleration of 0.6G, and was measured using a full-size dynamo tester.
以上の通りであって、繊維基材として石綿を含まない本
発明非石綿系摩擦材は、実施例に示したように、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
維等の金属系繊維、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成分とから成るもので、繊維
成分の少なくとも一部に酸化ジルコニウムを含有させた
セラミック繊維を含ませた結果、摩擦材としての強度が
向上し、摩擦性能も上記表の通り向上するので、自動車
のブレーキパッド、ブレーキライニング。As described above, the non-asbestos friction material of the present invention, which does not contain asbestos as a fiber base material, is made of organic fibers such as aramid fibers, inorganic fibers such as rock wool, copper fibers, etc. It consists of metal fibers, binders such as phenolic resins, and filler components such as graphite and barium sulfate.As a result of including ceramic fibers containing zirconium oxide in at least a portion of the fiber components, it can be used as a friction material. The strength of the brake pads and brake linings of automobiles is improved, and the friction performance is also improved as shown in the table above.
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。It is suitable as a friction material for use in clutch facings, etc.
Claims (1)
性樹脂成分と、黒鉛、硫酸バリウム等の充填材粉末成分
とを含有する摩擦材において、繊維成分の少なくとも一
部に酸化ジルコニウムを含んだセラミック繊維を含むこ
とを特徴とする非石綿系摩擦材。 ２ セラミック繊維は酸化ジルコニウム成分を１〜１５
重量％含むことを特徴とする特許請求の範囲第１項に記
載の非石綿系摩擦材。 ３ セラミック繊維の量が摩擦材全量に対して１〜１５
体積％であることを特徴とする特許請求の範囲第１項に
記載の非石綿系摩擦材。 ４ 石綿以外の繊維成分が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、黄銅等の金属繊維である
ことを特徴とする特許請求の範囲第１項に記載の非石綿
系摩擦材。[Scope of Claims] 1. A friction material containing a fiber component other than asbestos, a thermosetting resin component such as a phenolic resin, and a filler powder component such as graphite or barium sulfate, in which at least a portion of the fiber component contains A non-asbestos friction material characterized by containing ceramic fibers containing zirconium oxide. 2 Ceramic fiber contains 1 to 15 zirconium oxide components
% by weight of the non-asbestos friction material according to claim 1. 3 The amount of ceramic fiber is 1 to 15% of the total amount of friction material.
% by volume. The non-asbestos friction material according to claim 1. 4 Fiber components other than asbestos are organic fibers such as aramid fibers,
The non-asbestos friction material according to claim 1, which is an inorganic fiber such as glass fiber, rock wool, or ceramic fiber, or a metal fiber such as copper, bronze, aluminum, or brass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32267989A JPH03185032A (en) | 1989-12-14 | 1989-12-14 | Nonasbestos-based friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32267989A JPH03185032A (en) | 1989-12-14 | 1989-12-14 | Nonasbestos-based friction material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03185032A true JPH03185032A (en) | 1991-08-13 |
Family
ID=18146405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32267989A Pending JPH03185032A (en) | 1989-12-14 | 1989-12-14 | Nonasbestos-based friction material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03185032A (en) |
-
1989
- 1989-12-14 JP JP32267989A patent/JPH03185032A/en active Pending
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