JPH05247444A - Nonasbestos friction material - Google Patents
Nonasbestos friction materialInfo
- Publication number
- JPH05247444A JPH05247444A JP8029792A JP8029792A JPH05247444A JP H05247444 A JPH05247444 A JP H05247444A JP 8029792 A JP8029792 A JP 8029792A JP 8029792 A JP8029792 A JP 8029792A JP H05247444 A JPH05247444 A JP H05247444A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- friction material
- asbestos
- component
- lump
- 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 description 42
- 239000000835 fiber Substances 0.000 claims abstract description 31
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 18
- 239000000945 filler Substances 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000010439 graphite Substances 0.000 claims abstract description 6
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 239000005011 phenolic resin Substances 0.000 claims abstract description 4
- 239000011347 resin Substances 0.000 claims abstract description 4
- 229920005989 resin Polymers 0.000 claims abstract description 4
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 4
- 239000011230 binding agent Substances 0.000 claims abstract description 3
- 239000010425 asbestos Substances 0.000 claims description 19
- 229910052895 riebeckite Inorganic materials 0.000 claims description 19
- 229920006231 aramid fiber Polymers 0.000 claims description 6
- 239000011490 mineral wool Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910001369 Brass Inorganic materials 0.000 claims description 2
- 229910000906 Bronze Inorganic materials 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 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
- 239000000919 ceramic Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 2
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 239000012784 inorganic fiber Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000013329 compounding Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229940007424 antimony trisulfide Drugs 0.000 description 1
- NVWBARWTDVQPJD-UHFFFAOYSA-N antimony(3+);trisulfide Chemical compound [S-2].[S-2].[S-2].[Sb+3].[Sb+3] NVWBARWTDVQPJD-UHFFFAOYSA-N 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- YPMOSINXXHVZIL-UHFFFAOYSA-N sulfanylideneantimony Chemical compound [Sb]=S YPMOSINXXHVZIL-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車のブレ−キパッ
ド，ブレ−キライニング，クラッチフェ−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、鳴き発生が少ない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, etc. of an automobile, which does not contain asbestos as a fiber component and has a low noise. It relates to asbestos-based friction materials.
【０００２】[0002]
【従来の技術】従来、自動車のブレ−キパッド，ブレ−
キライニング，クラッチフェ−シング等に使用される摩
擦材は、その繊維成分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るため、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。2. Description of the Related Art Conventionally, brake pads and brakes for automobiles
Asbestos is often used as a fiber component in friction materials used for linings, clutch facings, etc., but as a result of the dust being pointed out to be harmful to humans, the use of asbestos was restricted. Therefore, there is an increasing demand for friction materials that do not use asbestos.
【０００３】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、それらのうちで
鳴きの発生を防止することを目的とした摩擦材として
は、 摺動面の硬度分布を工夫し、摩擦振動が起こりにく
い硬度分布にした摩擦材 摺動面に近い部分の気孔率を高くした摩擦材 摩擦材と裏金の間にゴム粒等を多く含む材料を挿入
して振動吸収性を良好にした摩擦材 などがある。Therefore, many proposals have been made for non-asbestos type friction materials which do not use asbestos. Among them, as the friction material for preventing the generation of squeal, the hardness distribution of the sliding surface is used. The friction material has a hardness distribution that prevents frictional vibrations. A friction material with a high porosity near the sliding surface. A material containing a lot of rubber particles is inserted between the friction material and the back metal to absorb vibration. There are friction materials that have improved
【０００４】然し乍ら、上記の摩擦材にには、その製造
方法や摩擦材自体に次のような問題点がある。即ち、 の摩擦材は、製造工程が複雑になりやすく、コスト高
になる。 の摩擦材は、その製造方法に二つの方法が考えられ
る。その第一の方法は、気孔率を大きくする部分とその
他の部分とで摩擦材料を異なったものにして一体成型に
より合体させる方法であり、第二の方法は、同じ摩擦材
料を用いてそれぞれ異なった条件で成型を行ない、二種
類の摩擦材を製造した後、それらを接着剤により合体さ
せる方法である。上記の第一の方法によれば、比較的簡
単に摩擦材を製造できるが、二種類の摩擦材料の境界面
で温度変化による亀裂が生じたり、強度低下の起こるお
それがあるし、また、第二の方法によれば、製造工程が
複雑になるという問題点がある。 の摩擦材は、二種類以上の材料を使用するので、それ
ら材料の境界面の強度が問題になる。However, the above friction material has the following problems in its manufacturing method and the friction material itself. That is, the manufacturing process of the friction material tends to be complicated, resulting in high cost. The friction material can be manufactured by two methods. The first method is to make the friction material different in the portion where the porosity is increased and the other portion and to combine them by integral molding, and the second method is to use the same friction material and use different friction materials. This is a method in which two types of friction materials are manufactured by molding under the above conditions and then they are combined with an adhesive. According to the above-mentioned first method, a friction material can be manufactured relatively easily, but cracks due to temperature change may occur at the interface between two types of friction materials, or strength may decrease, and The second method has a problem that the manufacturing process becomes complicated. The friction material uses two or more kinds of materials, so that the strength of the interface between the materials becomes a problem.
【０００５】[0005]
【発明が解決しようとする課題】従って、本発明は、製
造工程が複雑にならず、強度その他摩擦材の重要な性能
に悪影響を与えずに、鳴きが少ない非石綿系摩擦材を提
供するすることを、その課題とするものである。Therefore, the present invention provides a non-asbestos-based friction material that does not complicate the manufacturing process, does not adversely affect strength and other important performances of the friction material, and has less squeaking. That is the task.
【０００６】[0006]
【課題を解決するための手段】本発明は上記課題を解決
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−ル樹脂等の熱硬化性樹脂
から成る結合材成分と、黒鉛，硫酸バリウム等の充填材
成分とを含有する摩擦材において、その構成成分の少な
くとも一部に、前記繊維の塊状物または繊維及び充填材
の混合物の塊状物を含むことを特徴とするものである。SUMMARY OF THE INVENTION The present invention has been made for the purpose of solving the above-mentioned problems, and its constitution is a combination of a fiber component other than asbestos and a thermosetting resin such as phenol resin. In a friction material containing a material component and a filler component such as graphite or barium sulfate, at least a part of the constituent components includes a lump of the fiber or a lump of the fiber and the filler. It is what
【０００７】即ち、本発明は、上記の課題を解決するこ
とを目的として研究を重ねた結果、非石綿系の摩擦材に
おいて、その構成成分の少なくとも一部に、非石綿系の
繊維の塊状物、または繊維と黒鉛，硫酸バリウム等の充
填材の混合物の塊状物を含有させることにより、振動吸
収性（ダンピング特性）が優れ、ブレ−キの制動時に鳴
きが少なくなって、所期の摩擦材を得られることを知得
し、本発明を完成したのである。That is, the present invention has been studied for the purpose of solving the above-mentioned problems, and as a result, in a non-asbestos-based friction material, at least a part of its constituents is a lump of non-asbestos-based fibers. , Or the inclusion of a lump of a mixture of fibers and a filler such as graphite or barium sulphate, it has excellent vibration absorption (damping characteristics) and reduces squeal when braking a brake. Therefore, they have completed the present invention.
【０００８】次に本発明について詳細に説明する。本発
明において、使用する石綿以外の繊維成分としては、ア
ラミド繊維等の有機繊維、ガラス繊維，ロックウ−ル，
セラミックス繊維，チタン酸カリウム繊維等の無機繊
維、銅，青銅，アルミニウム，黄銅等の金属繊維が挙げ
られ、また、充填材としては、カシュ−ダスト，ニトリ
ルゴム，炭酸カルシウム，硫酸バリウム，黒鉛，三硫化
アンチモン等が挙げられる。Next, the present invention will be described in detail. In the present invention, the fiber components other than asbestos used include organic fibers such as aramid fibers, glass fibers, rock wool,
Inorganic fibers such as ceramics fibers and potassium titanate fibers, and metal fibers such as copper, bronze, aluminum and brass can be mentioned. Fillers include cash-dust, nitrile rubber, calcium carbonate, barium sulfate, graphite, and three. Examples thereof include antimony sulfide.
【０００９】而して、本発明においては、前記繊維の塊
状物、または前記繊維と充填材との混合物の塊状物を含
ませるのであるが、これらの塊状物は熱硬化性樹脂を含
まないので、これらを含ませた摩擦材は振動吸収性が良
好となり、ブレ−キの制動時に鳴きが少なくなるのであ
る。Thus, in the present invention, the agglomerates of the fibers or the agglomerates of the mixture of the fibers and the filler are contained, but since these agglomerates do not contain the thermosetting resin. The friction material containing them has a good vibration absorption property, and the noise during braking of the brake is reduced.
【００１０】上記の塊状物の体積は、0.1〜400mm3であ
ることが望ましい。その理由は、前記体積が0.1mm3以下
では効果が少なく、また、400mm3以上では摩擦材の耐摩
耗性が悪化するおそれがあるからである。一方、塊状物
の含有量は、摩擦材全量に対して１〜50体積％であるこ
とが望ましい。その理由は、１％以下では効果が少な
く、また、50％以上では摩擦材の強度，耐摩耗性が悪化
するおそれがあるからである。尚、塊状物の形状は球形
であることが望ましい。The volume of the agglomerate is preferably 0.1 to 400 mm 3 . The reason is that if the volume is 0.1 mm 3 or less, the effect is small, and if it is 400 mm 3 or more, the wear resistance of the friction material may be deteriorated. On the other hand, the content of the lumps is preferably 1 to 50% by volume with respect to the total amount of the friction material. The reason is that if it is 1% or less, the effect is small, and if it is 50% or more, the strength and wear resistance of the friction material may be deteriorated. The shape of the lump is preferably spherical.
【００１１】また、上記の塊状物は、最初に回転型混合
機を用いて高速回転で繊維のみ、または繊維と充填材を
混合することにより得られ、この塊状物はその後、従来
から行なわれているように、低速回転で他の摩擦材料を
含めて均一に混合するようにすれば良い。Further, the above-mentioned agglomerates are obtained by first mixing only the fibers or the fibers and the filler at a high speed by using a rotary mixer, and the agglomerates are then conventionally produced. As described above, it is sufficient to mix at low speed including other friction materials uniformly.
【００１２】次に本発明の実施例について説明する。初
めに、繊維成分としてアラミド繊維，ロックウ−ル、充
填材成分として硫酸バリウムを用い、攪拌機により、15
00rpmの高速回転で、アラミド繊維塊状物、ロックウ−
ル塊状物、アラミド繊維と硫酸バリウムの混合物の塊状
物、ロックウ−ルと硫酸バリウムの混合物の塊状物を製
造した。その後、繊維基材としてアラミド繊維，ロック
ウ−ル、結合材としてフェノ−ル樹脂をそれぞれ用い、
充填材としてカシュ−ダスト，ニトリルゴム，炭酸カル
シウム，硫酸バリウム，黒鉛，三硫化アンチモンを用
い、これらに前記塊状物を加えて、攪拌機により、400r
pmの低速回転で均一に混合し、室温、圧力200kg/cm2で
予備成形した後、温度150℃、圧力400kg/cm2で加熱加圧
成型し、次いで温度150℃で５時間熱処理して、表１に
示す実施例Ａ〜Ｆの摩擦材を得た。また、塊状物を用い
ない比較例の摩擦材ａ〜ｅを同様にして得た。尚、表中
の数値は体積％を示す。Next, examples of the present invention will be described. First, using aramid fiber, rock wool as the fiber component, and barium sulfate as the filler component, agitator 15
At high speed of 00 rpm, aramid fiber lumps, rock wool
A lump, a lump of aramid fiber and barium sulfate, and a lump of rock wool and barium sulfate were produced. After that, using aramid fiber, rock wool as the fiber base material and phenol resin as the binder,
Cash-dust, nitrile rubber, calcium carbonate, barium sulfate, graphite, and antimony trisulfide were used as the filler, and the agglomerates were added to them, and the
were uniformly mixed at a low speed rotation of the pm, at room temperature, after pre-molded under a pressure 200 kg / cm 2, temperature of 0.99 ° C., and heated pressure molding at a pressure 400 kg / cm 2, then heat-treated for 5 hours at a temperature 0.99 ° C., The friction materials of Examples AF shown in Table 1 were obtained. Further, friction materials a to e of comparative examples which did not use lumps were obtained in the same manner. In addition, the numerical value in a table shows volume%.
【００１３】上記の方法により作製した実施例Ａ〜Ｆ及
び比較例ａ〜ｅの摩擦材を小型乗用車に取付け、JASO C
406のテストコ−ドによる摩擦摩耗試験、実車による鳴
き試験を行なった結果は表１に示すとおりであった。こ
の表から実施例Ａ〜Ｆの摩擦摩耗性能は、比較例ａ〜ｅ
と同程度に良好で、鳴きは顕著に少なくなることが判明
した。The friction materials of Examples A to F and Comparative Examples a to e produced by the above method were attached to a small passenger car, and JASO C
Table 1 shows the results of the friction and wear test with the test cord of 406 and the squeal test with the actual vehicle. From this table, the friction and wear performances of Examples A to F are shown in Comparative Examples a to e.
It was found to be as good as, and the squeaking was significantly reduced.
【００１４】[0014]
【表１】 [Table 1]
【００１５】[0015]
【発明の効果】本発明は上述のとおりであって、摩擦材
の構成成分の少なくとも一部に、繊維のみの塊状物、ま
たは繊維と充填材の混合物の塊状物を含ませたから、振
動吸収性に優れ、ブレ−キの制動時における鳴きの発生
が少なくなる。The present invention is as described above, and since at least a part of the constituents of the friction material contains a lump of fibers alone or a lump of a mixture of fibers and a filler, the vibration absorbing property is improved. And the occurrence of squeaking during braking of the brake is reduced.
【手続補正書】[Procedure amendment]
【提出日】平成４年４月２０日[Submission date] April 20, 1992
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１４[Correction target item name] 0014
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１４】[0014]
【表１】 [Table 1]
Claims (5)
等の熱硬化性樹脂から成る結合材成分と、黒鉛，硫酸バ
リウム等の充填材成分とを含有する摩擦材において、そ
の構成成分の少なくとも一部に、前記繊維の塊状物また
は繊維及び充填材の混合物の塊状物を含むことを特徴と
する非石綿系摩擦材。1. A friction material containing a fiber component other than asbestos, a binder component made of a thermosetting resin such as phenol resin, and a filler component such as graphite and barium sulfate. A non-asbestos-based friction material, characterized in that at least a portion thereof includes a lump of the fiber or a lump of the mixture of the fiber and the filler.
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 volume of the lump is 0.1 to 400 mm 3 .
〜50体積％である請求項１に記載の非石綿系摩擦材。3. The content of lumps is 1 with respect to the total amount of friction material.
The non-asbestos-based friction material according to claim 1, which is ˜50% by volume.
１に記載の非石綿系摩擦材。4. The non-asbestos-based friction material according to claim 1, wherein the agglomerate has a porosity of 3 to 25%.
有機繊維、ガラス繊維，ロックウ−ル，セラミックス繊
維，チタン酸カリウム繊維等の無機繊維、銅，青銅，ア
ルミニウム，黄銅等の金属繊維である請求項１に記載の
非石綿系摩擦材。5. The fiber component other than asbestos is organic fiber such as aramid fiber, glass fiber, rock wool, ceramic fiber, inorganic fiber such as potassium titanate fiber, metal fiber such as copper, bronze, aluminum and brass. The non-asbestos friction material according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8029792A JPH05247444A (en) | 1992-03-03 | 1992-03-03 | Nonasbestos friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8029792A JPH05247444A (en) | 1992-03-03 | 1992-03-03 | Nonasbestos friction material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05247444A true JPH05247444A (en) | 1993-09-24 |
Family
ID=13714343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8029792A Pending JPH05247444A (en) | 1992-03-03 | 1992-03-03 | Nonasbestos friction material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05247444A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0790432A1 (en) * | 1996-02-16 | 1997-08-20 | Dynax Corporation | Friction material for a synchronizer ring |
| JP2011219658A (en) * | 2010-04-12 | 2011-11-04 | Akebono Brake Ind Co Ltd | Friction material |
| JP2014527566A (en) * | 2011-08-18 | 2014-10-16 | フェデラル−モーグル コーポレイション | Friction material for brake |
-
1992
- 1992-03-03 JP JP8029792A patent/JPH05247444A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0790432A1 (en) * | 1996-02-16 | 1997-08-20 | Dynax Corporation | Friction material for a synchronizer ring |
| JP2011219658A (en) * | 2010-04-12 | 2011-11-04 | Akebono Brake Ind Co Ltd | Friction material |
| JP2014527566A (en) * | 2011-08-18 | 2014-10-16 | フェデラル−モーグル コーポレイション | Friction material for brake |
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