JPH0226331A - Friction material - Google Patents
Friction materialInfo
- Publication number
- JPH0226331A JPH0226331A JP17432088A JP17432088A JPH0226331A JP H0226331 A JPH0226331 A JP H0226331A JP 17432088 A JP17432088 A JP 17432088A JP 17432088 A JP17432088 A JP 17432088A JP H0226331 A JPH0226331 A JP H0226331A
- Authority
- JP
- Japan
- Prior art keywords
- cashew dust
- friction material
- hardened
- friction
- fiber
- 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 30
- 244000226021 Anacardium occidentale Species 0.000 claims abstract description 29
- 235000020226 cashew nut Nutrition 0.000 claims abstract description 29
- 239000000428 dust Substances 0.000 claims abstract description 28
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000835 fiber Substances 0.000 claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000011230 binding agent Substances 0.000 claims abstract description 5
- 239000000945 filler Substances 0.000 claims abstract description 5
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 5
- 239000010439 graphite Substances 0.000 claims abstract description 5
- 239000005011 phenolic resin Substances 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229920001568 phenolic resin Polymers 0.000 claims description 2
- 229920000914 Metallic fiber Polymers 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 14
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 12
- 238000005260 corrosion Methods 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 10
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 230000002265 prevention Effects 0.000 description 6
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 6
- 235000010299 hexamethylene tetramine Nutrition 0.000 description 5
- 239000004312 hexamethylene tetramine Substances 0.000 description 5
- 239000003377 acid catalyst Substances 0.000 description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 4
- 239000000920 calcium hydroxide Substances 0.000 description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 4
- 235000011116 calcium hydroxide Nutrition 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 235000010288 sodium nitrite Nutrition 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 235000019492 Cashew oil Nutrition 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000004760 aramid Substances 0.000 description 2
- 229920003235 aromatic polyamide Polymers 0.000 description 2
- 229940059459 cashew oil Drugs 0.000 description 2
- 239000010467 cashew oil Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- FWBHETKCLVMNFS-UHFFFAOYSA-N 4',6-Diamino-2-phenylindol Chemical compound C1=CC(C(=N)N)=CC=C1C1=CC2=CC=C(C(N)=N)C=C2N1 FWBHETKCLVMNFS-UHFFFAOYSA-N 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229920000271 Kevlar® Polymers 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 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
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate group Chemical group S(=O)(=O)([O-])[O-] QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明はブレーキパッド、クラッチフェーシングなどの
摩擦材に関し、詳しくは防錆性能に優れた（１！擦材に
関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a friction material for brake pads, clutch facings, etc., and specifically relates to a friction material with excellent rust prevention performance (1!).
［従来の技術］
摩擦材には耐熱性、安定した摩擦特性、高い摩擦係数な
ど種々の特性が要求され、この要求を満たすために複数
の成分が混合された複合材料として提供されている。摩
擦材の一成分として、例えば従来よりカシューダストが
用いられている。このカシューダストは天然に産するカ
シューオイルの硬化物であり、摩擦材では摩擦係数を向
上させる摩擦調整剤として多用されている。[Prior Art] Friction materials are required to have various properties such as heat resistance, stable friction characteristics, and high coefficient of friction, and to meet these requirements, they are provided as composite materials in which a plurality of components are mixed. For example, cashew dust has been conventionally used as a component of the friction material. This cashew dust is a hardened product of naturally occurring cashew oil, and is often used in friction materials as a friction modifier to improve the coefficient of friction.
ところで、・カシューダストはその製法の関係上酸が残
留しているためｐ）−１２〜４などの酸性を示し、これ
による不具合が生じる。例えばスヂール繊維などを含有
する＊１ｍ材にあっては、摩擦材自体の耐蝕性が低下す
る。また相手材への錆付きが生じる場合もある。そこで
このような問題点を改良するために、ブレーキパッドに
おいては消石灰を添加したり、クラッチフェーシングに
おいては亜硝酸ソーダを含浸させたりして、アルカリ性
の摩擦材とすることにより対処している。例えば特開昭
６０−３６５８２号公報には、予め亜硝酸ソーダを含有
させたカシューダストを用いた摩擦材が開示されている
。しかしこのようにアルカリ性物質で処理することは工
数の増大となり、コスト面で不具合がある。By the way, since cashew dust has residual acid due to its manufacturing method, it exhibits acidity such as p) -12 to 4, which causes problems. For example, in the case of *1m material containing Sudir fiber, the corrosion resistance of the friction material itself is reduced. Also, rust may occur on the mating material. In order to improve these problems, brake pads are treated with slaked lime, and clutch facings are impregnated with sodium nitrite to make them alkaline friction materials. For example, Japanese Patent Application Laid-Open No. 60-36582 discloses a friction material using cashew dust containing sodium nitrite in advance. However, such treatment with an alkaline substance increases the number of man-hours and is disadvantageous in terms of cost.
［発明が解決しようとする課題］
本発明は上記事情に鑑みてなされたものであり、摩擦材
またはカシューダストをアルカリ性物質で処理すること
なく、防錆性能を従来と同等に維持することを技術的課
題とするものである。[Problems to be Solved by the Invention] The present invention has been made in view of the above-mentioned circumstances, and is a technology that maintains the same rust prevention performance as before without treating the friction material or cashew dust with an alkaline substance. This is a major issue.
［課題を解決するための手段］
カシューオイルを硬化させるには、従来より硬化剤とし
てヘキサメチレンテトラミン、フルフラールなどが用い
られている。本発明者は鋭意研究の結果、アルカリ性雰
囲気下でフルフラールにより硬化された弱アルカリ性の
カシューダストを用いたｓｍ材は、防錆性能に優れると
ともに、耐熱性も良好に維持されることを発見して本発
明を完成したものである。[Means for Solving the Problems] To harden cashew oil, hexamethylenetetramine, furfural, and the like have conventionally been used as hardening agents. As a result of intensive research, the present inventor discovered that SM material using weakly alkaline cashew dust hardened with furfural in an alkaline atmosphere has excellent rust prevention performance and maintains good heat resistance. This completes the present invention.
すなわち本発明の摩擦材は、有機繊維、金属繊維などの
繊維成分と、フェノール樹脂などの結合剤と、グラファ
イトなどの充填材と、カシューダストと、を含有する摩
擦材において、カシューダストはアルカリ性雰囲気下で
フルフラールにより硬化された弱アルカリ性であること
を特徴とする。That is, the friction material of the present invention contains a fiber component such as organic fiber or metal fiber, a binder such as a phenol resin, a filler such as graphite, and cashew dust. It is characterized by being slightly alkaline and hardened by furfural.
繊維成分としては従来と同様のものが用いられ、ロック
ウール、ガラス繊維、シリケート繊維、アルミナ繊維、
カーボン繊維などの無機繊維、スチール繊維、ステンレ
ススチールａＳ、チタン繊維などの金属繊維、麻、木綿
、芳香族ポリアミド繊維などの有機繊維から選ぶことが
できる。The same fiber components as before are used, including rock wool, glass fiber, silicate fiber, alumina fiber,
It can be selected from inorganic fibers such as carbon fibers, metal fibers such as steel fibers, stainless steel aS, titanium fibers, and organic fibers such as hemp, cotton, and aromatic polyamide fibers.
結合剤としては、フェノール樹脂、エポキシ樹脂、ポリ
イミド樹脂など従来と同様のものが挙げられる。Examples of the binder include conventional binders such as phenol resin, epoxy resin, and polyimide resin.
また充填材も、グラファイト、硫酸バリウム、炭酸カル
シウム、ゴム粒など従来と同様の充填材から種々選択し
て用いることができる。Further, various fillers can be selected from conventional fillers such as graphite, barium sulfate, calcium carbonate, and rubber particles.
本発明の最大の特徴は、アルカリ性雰囲気下でフルフラ
ールにより硬化された弱アルカリ性のカシューダストを
含有させたところにある。このカシューダストは、従来
と同様に摩擦材中に通常５〜１５重量％含有される。５
重量％より少ないと所望のＦＪ擦係数が得られず、１５
重邑％より多く含有させると耐フエード性が低下する。The greatest feature of the present invention is that it contains weakly alkaline cashew dust that has been hardened with furfural in an alkaline atmosphere. This cashew dust is normally contained in the friction material in an amount of 5 to 15% by weight, as in the conventional case. 5
If it is less than 15% by weight, the desired FJ friction coefficient cannot be obtained;
If it is contained in an amount higher than 1%, the fade resistance will decrease.
また粒径は従来と同様６０〜５００μが好ましい。Further, the particle size is preferably 60 to 500 microns as in the conventional case.
酸触媒の存在下でフルフラールにより硬化されたカシュ
ーダストは酸性を示すため防錆性能に劣り、ヘキサメチ
レンテトラミンで硬化されたカシューダストは、たとえ
アルカリ性であっても耐熱性に劣り、摩擦材の耐フエー
ド性が低下する。Cashew dust hardened with furfural in the presence of an acid catalyst is acidic and has poor rust prevention performance, and cashew dust hardened with hexamethylenetetramine has poor heat resistance even if it is alkaline, and has poor anti-rust properties. Fade properties are reduced.
［発明の作用および効果］
本発明のｒ１１擦材では、アルカリ性雰囲気下でフルフ
ラールにより硬化されたカシューダストが含有されてい
る。このカシューダストは弱アルカリ性を示し、また吸
湿性が小さいため、摩擦材中に含有される金属繊維また
は相手材の防錆性能に優れている。また、酸触媒の存在
下でフルフラールにより硬化された従来のカシューダス
トと同等の耐熱性を有し、良好な耐フエード性を維持す
ることができる。[Operations and Effects of the Invention] The r11 rubbing material of the present invention contains cashew dust hardened with furfural in an alkaline atmosphere. Since this cashew dust exhibits weak alkalinity and low hygroscopicity, it has excellent rust prevention performance for metal fibers contained in friction materials or mating materials. Furthermore, it has heat resistance equivalent to that of conventional cashew dust hardened with furfural in the presence of an acid catalyst, and can maintain good fade resistance.
すなわち本発明の摩擦材によれば、消石灰や亜硝酸ソー
ダなどのアルカリ性物質を添加する必要がないので工数
が削減されコストを低減することができる。また防錆性
能に優れるとともに、耐熱性も従来と同等の性能を帷持
し、安定したｒｆｉ擦性飽性能持することができる。That is, according to the friction material of the present invention, there is no need to add alkaline substances such as slaked lime or sodium nitrite, so the number of man-hours can be reduced and costs can be reduced. In addition, it has excellent rust prevention performance, maintains the same heat resistance as conventional products, and can maintain stable RFI abrasion saturation performance.
［実施例］
以下実施例により具体的に説明する。なお、以下にいう
部は全て１１部を意味する。[Example] The following is a concrete explanation using Examples. In addition, all parts mentioned below mean 11 parts.
第１表
（実施例１）
第１表にも示すように、有機４１！ｍとしての芳香族ポ
リアミド繊＄！（「ケブラー」デュポン社製）１５部と
、スチールＭＡＭ２０部と、フェノール樹脂（ｒＹ−２
３８１Ｊカシユー樹脂（株）製）１０部と、グラファイ
ト１０部と、′＠酸バリウム３５部と、さらにカシュー
ダスト（ＦＡＤ−４４８Ｊ東北化工（株）製）１０部と
をよく混合し、熱成形してレジンモールド系の摩擦材を
製造した。ここで用いたカシューダストは、アルカリ性
雰囲気下でフルフラールにより硬化されたものであり、
第２表に示すように硫酸根が少なく弱アルカリ性を示し
吸湿率も小さい。Table 1 (Example 1) As shown in Table 1, organic 41! Aromatic polyamide fiber as m! (Kevlar manufactured by DuPont), 20 parts of steel MAM, and phenolic resin (rY-2
10 parts of 381J Cashew Resin Co., Ltd.), 10 parts of graphite, 35 parts of barium acid, and 10 parts of cashew dust (FAD-448J Tohoku Kako Co., Ltd.) were thoroughly mixed and thermoformed. A resin-molded friction material was manufactured using this method. The cashew dust used here was hardened with furfural in an alkaline atmosphere,
As shown in Table 2, it has few sulfate groups, is slightly alkaline, and has a low moisture absorption rate.
第２表
得られたａＩ擦材について、耐蝕性と耐フエード性を試
験し、結果を第３表と第１図に示す。Table 2 The obtained aI rubbing material was tested for corrosion resistance and fade resistance, and the results are shown in Table 3 and FIG.
耐蝕性は、温度３０℃、湿度８０％の恒温恒湿器にｒ！
Ｊｍ材を入れて３０日間放置し、その後表面をＱ、５部
ｍｍ研磨して除去し、その表面の錆発生程度をＮ！Ａ察
した。そして全面に錆が発生した状態をランク１、スポ
ット状に錆が発生した状態をランク２、鏑が発生してい
ない状態をランク３とした。なおこの試験は２０個の摩
擦材についてそれぞれ行なった。Corrosion resistance is determined by using a constant temperature and humidity chamber at a temperature of 30°C and a humidity of 80%.
Jm material was put in and left for 30 days, then the surface was polished and removed by Q, 5 mm, and the degree of rust on the surface was N! A I guess. Rank 1 was given to a state in which rust occurred on the entire surface, rank 2 was given to a state in which rust occurred in spots, and rank 3 was given to a state in which no rust occurred. Note that this test was conducted for each of 20 friction materials.
耐フエード性は、キャリパ型式をＰＤ５４とし、ロータ
を１８ｍｍベンチレーテッドタイプとし、イナーシャが
４．５ｋｇｆｍＳ２＋７）条件で、ＪＡＳｏ−Ｃ４０６
−８２の第１フエード試験により評価した。Fade resistance was determined using JASo-C406 with caliper type PD54, rotor 18mm ventilated type, and inertia 4.5kgfmS2+7).
-82 first fade test.
（比較例１）
酸触媒の存在下でフルフラールにより硬化されたカシュ
ーダスト（ｒＦＦ−１０８１Ｊ東北化工（株）製）を用
いたこと以外は実施例１と同様にして、比較例１の摩擦
材を製造した。なお、このカシューダストは性状値を第
２表に示すように、酸性を示し吸湿率も高い。(Comparative Example 1) The friction material of Comparative Example 1 was prepared in the same manner as in Example 1 except that cashew dust (rFF-1081J manufactured by Tohoku Kako Co., Ltd.) cured with furfural in the presence of an acid catalyst was used. Manufactured. As shown in Table 2, this cashew dust is acidic and has a high moisture absorption rate.
この摩擦材について耐蝕性および耐フエード性を実施例
１と同様に測定し、結果を第３表および第１図に示す。The corrosion resistance and fade resistance of this friction material were measured in the same manner as in Example 1, and the results are shown in Table 3 and FIG.
（比較例２）
カシューダストとして比較例１と同一のものを用い、硫
酸バリウムを３０部としさらに消石灰を５部加えたこと
以外は実施例１と同様にして、比較例２の摩擦材を製造
した。この摩擦材はアルカリ性を示す。(Comparative Example 2) A friction material of Comparative Example 2 was produced in the same manner as in Example 1, except that the same cashew dust as in Comparative Example 1 was used, barium sulfate was added to 30 parts, and slaked lime was added to 5 parts. did. This friction material exhibits alkalinity.
この摩擦材について耐蝕性および耐フエード性を実施例
１と同様に測定し、結果を第３表および第１図に示す。The corrosion resistance and fade resistance of this friction material were measured in the same manner as in Example 1, and the results are shown in Table 3 and FIG.
（比較例３）
酸触媒の存在下でヘキサメチレンテトラミンにより硬化
されたカシューダスト（ｒＦＦｌｌ ４０Ｊ東北化工（
株）製）を用いたこと以外は実施例１と同様にして、比
較例３の摩擦材を製造した。このカシューダストは弱ア
ルカリ性を示す。(Comparative Example 3) Cashew dust (rFFll 40J Tohoku Kako) hardened with hexamethylenetetramine in the presence of an acid catalyst
A friction material of Comparative Example 3 was produced in the same manner as in Example 1 except that a material manufactured by Co., Ltd.) was used. This cashew dust exhibits weak alkalinity.
この摩擦材について耐蝕性および耐フエード性を実施例
１と同様に測定し、結果を第３表および第１図に示す。The corrosion resistance and fade resistance of this friction material were measured in the same manner as in Example 1, and the results are shown in Table 3 and FIG.
（評価）
第３表
第３表より、比較例２の摩擦材は比較例１に比べて耐蝕
性が向上した傾向がみられる。これは消石灰を添加した
効果である。そして実施例１の摩擦材は耐蝕性に著しく
優れていることがわかる。(Evaluation) From Table 3, it can be seen that the friction material of Comparative Example 2 tends to have improved corrosion resistance compared to Comparative Example 1. This is the effect of adding slaked lime. It can be seen that the friction material of Example 1 has extremely excellent corrosion resistance.
また比較例３の摩擦材はへキサメチレンテトラミンで硬
化されたカシューダストを用いているため弱アルカリ性
を示し、耐蝕性は比較例２とほぼ同等である。Furthermore, since the friction material of Comparative Example 3 uses cashew dust hardened with hexamethylenetetramine, it exhibits weak alkalinity, and its corrosion resistance is almost the same as that of Comparative Example 2.
また第１図より耐フエード性は、実施例１、比較例１お
よび比較例２はほとんど同等の性能を示し、フェード最
小摩擦係数は好ましい値を示している。しかしヘキサメ
チレンテトラミンで硬化されたカシューダストを用いた
比較例３の摩擦材は、最も小さいフェード最小摩擦係数
を示し耐フエード性に劣っている。Further, as shown in FIG. 1, in terms of fade resistance, Example 1, Comparative Example 1, and Comparative Example 2 show almost the same performance, and the minimum fade friction coefficient shows a preferable value. However, the friction material of Comparative Example 3 using cashew dust hardened with hexamethylenetetramine exhibits the smallest fade minimum friction coefficient and is inferior in fade resistance.
すなわち本実施例の摩擦材によれば、アルカリ性物質、
の添加は不必要であるとともに、耐蝕性および耐フエー
ド性に優れている。That is, according to the friction material of this example, an alkaline substance,
The addition of is unnecessary, and it has excellent corrosion resistance and fade resistance.
第１図は耐フエード試験結果を示し、ルリ勤回数と最小
摩擦係数との関係を示すグラフである。
特許出願人 アイシン化工株式会社
代理人 弁理士 大川 宏
第１図
−実ａ惰１FIG. 1 shows the results of the anti-fade test, and is a graph showing the relationship between the number of steady-strokes and the minimum coefficient of friction. Patent Applicant: Aisin Kako Co., Ltd. Agent: Patent Attorney: Hiroshi Okawa Figure 1 - Actual Aida 1
Claims (1)
ル樹脂などの結合剤と、グラファイトなどの充填材と、
カシューダストと、を含有する摩擦材において、 前記カシューダストはアルカリ性雰囲気下でフルフラー
ルにより硬化された弱アルカリ性であることを特徴とす
る摩擦材。(1) Fiber components such as organic fibers and metal fibers, binders such as phenolic resins, fillers such as graphite,
A friction material containing cashew dust, wherein the cashew dust is weakly alkaline and hardened with furfural in an alkaline atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17432088A JPH0226331A (en) | 1988-07-13 | 1988-07-13 | Friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17432088A JPH0226331A (en) | 1988-07-13 | 1988-07-13 | Friction material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0226331A true JPH0226331A (en) | 1990-01-29 |
Family
ID=15976584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17432088A Pending JPH0226331A (en) | 1988-07-13 | 1988-07-13 | Friction material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0226331A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1845277A3 (en) * | 2006-04-12 | 2007-12-26 | Shimano Inc. | Bicycle disk brake pad with titanium fiber friction material |
| CN109722224A (en) * | 2017-10-31 | 2019-05-07 | 丹阳市金长汽车部件有限公司 | A kind of brake block of low noise |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6366232A (en) * | 1986-09-05 | 1988-03-24 | Aisin Chem Co Ltd | Wet friction material |
-
1988
- 1988-07-13 JP JP17432088A patent/JPH0226331A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6366232A (en) * | 1986-09-05 | 1988-03-24 | Aisin Chem Co Ltd | Wet friction material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1845277A3 (en) * | 2006-04-12 | 2007-12-26 | Shimano Inc. | Bicycle disk brake pad with titanium fiber friction material |
| US7441636B2 (en) | 2006-04-12 | 2008-10-28 | Shimano, Inc. | Bicycle disk brake pad with titanium fiber friction material |
| CN109722224A (en) * | 2017-10-31 | 2019-05-07 | 丹阳市金长汽车部件有限公司 | A kind of brake block of low noise |
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