JPH1161104A - Friction material - Google Patents
Friction materialInfo
- Publication number
- JPH1161104A JPH1161104A JP21616697A JP21616697A JPH1161104A JP H1161104 A JPH1161104 A JP H1161104A JP 21616697 A JP21616697 A JP 21616697A JP 21616697 A JP21616697 A JP 21616697A JP H1161104 A JPH1161104 A JP H1161104A
- Authority
- JP
- Japan
- Prior art keywords
- silicone rubber
- rubber powder
- friction
- friction material
- powder consisting
- 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 22
- 239000000843 powder Substances 0.000 claims abstract description 25
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 19
- 239000004945 silicone rubber Substances 0.000 claims abstract description 19
- 229920001971 elastomer Polymers 0.000 claims abstract description 13
- 239000005060 rubber Substances 0.000 claims abstract description 13
- 239000002245 particle Substances 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 239000010703 silicon Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 5
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 230000000704 physical effect Effects 0.000 abstract description 3
- 239000000835 fiber Substances 0.000 abstract description 2
- 238000004073 vulcanization Methods 0.000 abstract description 2
- 238000004898 kneading Methods 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 229920000459 Nitrile rubber Polymers 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 229920000800 acrylic rubber Polymers 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/006—Materials; Production methods therefor containing fibres or particles
- F16D2200/0069—Materials; Production methods therefor containing fibres or particles being characterised by their size
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ブレーキライニン
グ、ディスクパッドなどに用いる摩擦材料に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a friction material used for a brake lining, a disc pad and the like.
【０００２】[0002]
【従来の技術】摩擦材料に添加する粉末ゴムとしては、
天然ゴム、ニトリルゴム、スチレンブタジェンゴム等が
従来より知られ、特にニトリルゴム粉末は、他のゴム粉
末に比べ耐熱性に優れていることから多くの摩擦材に用
いられている。2. Description of the Related Art Powder rubber added to friction materials includes:
Natural rubber, nitrile rubber, styrene-butadiene rubber and the like have been conventionally known. In particular, nitrile rubber powder is used for many friction materials because of its superior heat resistance compared to other rubber powders.
【０００３】[0003]
【発明が解決しようとする課題】耐熱性は、いうまでも
なく摩擦材料に要求される重要な案件の一つである。耐
熱性に関して、珪素を主成分とするシリコーンゴムは、
ニトリルゴムよりさらに耐熱性に優れていることは、従
来より知られているが、シリコーンゴムの粉末は現在の
ところ、上市されておらず、シリコーンゴム粉末をどの
ように製造するか、また粉末のシリコーンゴムは、成型
体と同じように耐熱性を保有するものであるかどうかは
全く不明であり、また、摩擦材の配合材として適合する
ものかどうかは、予想することすらできないのが実情で
ある。Heat resistance is, of course, one of the important requirements for friction materials. Regarding heat resistance, silicone rubber containing silicon as a main component,
It has been known that nitrile rubber has better heat resistance than before.However, silicone rubber powder has not been put on the market at the present time. It is completely unknown whether silicone rubber has the same heat resistance as molded products, and it is impossible to predict whether it is suitable as a compounding material for friction materials. is there.
【０００４】本発明は、シリコーンゴム粉末の製法を開
発し、その粉末が摩擦配合材として優れた効果を有する
ものであることを見出して完成したものである。The present invention has been completed by developing a method for producing silicone rubber powder and finding that the powder has excellent effects as a friction compounding material.
【０００５】すなわち、本発明の目的は、耐熱性、柔軟
性、振動吸収性に優れ、熱履歴による物性変化が少な
く、かつ高温下での摩擦性能を向上させる摩擦材料を提
供することにある。That is, an object of the present invention is to provide a friction material which is excellent in heat resistance, flexibility and vibration absorption, has little change in physical properties due to heat history, and improves friction performance at high temperatures.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、本発明による摩擦材料においては、ゴム粉末が添加
された摩擦材料であって、ゴム粉末は、珪素を主成分と
するシリコーンゴムである。In order to achieve the above object, a friction material according to the present invention is a friction material to which rubber powder is added, and the rubber powder is a silicone rubber containing silicon as a main component. .
【０００７】また、使用されるシリコーンゴム粉末の粒
径は、５ｍｍ以下である。The particle size of the silicone rubber powder used is 5 mm or less.
【０００８】[0008]
【発明の実施の形態】珪素を主成分とするシリコーンゴ
ム粉末は、粉砕法、噴霧乾燥法、凝固法、粉末乾燥法で
得られるが、本発明では、比較的容易にゴム粉末が得ら
れる粉砕法にて、ゴム粉末を得た。粉砕法とは、バルク
のシリコーンゴムを加硫剤とともに混練後、薄いシート
に押し出し、１５０℃から２５０℃で加熱硬化後、粉砕
してゴム粉末を得る方法である。BEST MODE FOR CARRYING OUT THE INVENTION Silicone rubber powder containing silicon as a main component can be obtained by a pulverization method, a spray drying method, a coagulation method, or a powder drying method. By the method, a rubber powder was obtained. The pulverization method is a method in which a bulk silicone rubber is kneaded with a vulcanizing agent, extruded into a thin sheet, heated and cured at 150 to 250 ° C., and then pulverized to obtain a rubber powder.
【０００９】シリコーンゴムの粉末の粒径は、５ｍｍ以
下であることが好ましい。シリコーンゴムの粒径が大き
すぎると、摩擦材料中に均一に分散させるのが難しい。
一方、その粒径が小さい分にはいくら小さくても差支え
ないが、実際には５０μｍ以下の粒径のものを得るのは
難しい。このゴム粉末を繊維その他の摩擦材料成分とと
もに配合し、加熱、加圧により硬化されて得られた成形
体は、高温下での耐熱性を有し、柔軟性、摩擦安定性に
優れていることが実証された。The particle size of the silicone rubber powder is preferably 5 mm or less. If the particle size of the silicone rubber is too large, it is difficult to uniformly disperse it in the friction material.
On the other hand, the particle size can be as small as possible, but it is actually difficult to obtain a particle size of 50 μm or less. This rubber powder is blended with fibers and other friction material components, and the molded product obtained by curing by heating and pressing has heat resistance at high temperatures, and is excellent in flexibility and friction stability. Has been demonstrated.
【００１０】[0010]
【実施例】以下に本発明の実施例を説明する。Embodiments of the present invention will be described below.
【００１１】（１）珪素を主成分とするラテックスか
ら、シリコーンゴム粉末の製造 Ａ．配合例 シリコーン １００Ｗｔ部 加硫剤 ＲＣ−３ ２Ｗｔ部(1) Production of silicone rubber powder from latex containing silicon as a main component Formulation example Silicone 100Wt part Vulcanizing agent RC-3 2Wt part
【００１２】上記Ａの配合物をゴムロールにて、十分に
混練混合し、厚さ約５ｍｍほどのシートに薄通しを行
い、２００℃に保たれた熱風乾燥機に２時間投入し、加
硫を行った。加硫物をサンプルミル１ｍｍのスクリーン
に通して粒径を揃え、シリコーンゴム粉末を得た。[0012] The compound of the above A is sufficiently kneaded and mixed with a rubber roll, tightly passed through a sheet having a thickness of about 5 mm, and put into a hot-air drier kept at 200 ° C for 2 hours to carry out vulcanization. went. The vulcanized product was passed through a 1-mm screen of a sample mill to adjust the particle size to obtain a silicone rubber powder.
【００１３】（２）摩擦材の製造(2) Production of friction material
【表１】 [Table 1]
【００１４】Ｃ．試験ピースの製造 表１に示すＢの配合物を十分に混合し、室温で圧力４０
０ｋｇ／ｃｍ2で１０分間熱成形し、２００℃で１２時
間をかけて硬化させ、定形のテストピースに加工した。
一方、ニトリルゴム粉末を用い、実施例と同一条件でテ
ストピースを作成した。これを比較例としてその配合成
分をあわせて表１に示す。C. Manufacture of test piece The composition of B shown in Table 1 was mixed well,
It was thermoformed at 0 kg / cm 2 for 10 minutes, cured at 200 ° C. for 12 hours, and processed into a regular test piece.
On the other hand, a test piece was prepared using nitrile rubber powder under the same conditions as in the example. This is shown in Table 1 as a comparative example together with its components.
【００１５】（３）摩擦特性試験 得られたテストピースの機械的性質と摩擦性能について
以下の測定を行った。 Ｄ．試験用ピースの機械的性質 実施例、比較例のテストピースについて、加熱負荷処理
を施したものと、この後処理を施さないものとの物性を
測定した。その測定結果を表２に示す。表２中、（前）
は、加熱負荷処理を行っていないもの、（後）は、加熱
負荷処理を行ったものを示している。(3) Friction property test The following measurements were performed on the mechanical properties and friction performance of the obtained test pieces. D. Mechanical Properties of Test Pieces The test pieces of Examples and Comparative Examples were measured for physical properties of those subjected to a heating load treatment and those not subjected to a post-treatment. Table 2 shows the measurement results. In Table 2, (before)
Indicates that the heating load treatment was not performed, and (after) indicates that the heating load treatment was performed.
【００１６】加熱負荷処理は、実施例、比較例の試験用
テストピースを３７０℃、１時間熱処理したもので、成
型品の劣化の程度を示すものである。In the heating load treatment, the test pieces for testing in Examples and Comparative Examples were heat-treated at 370 ° C. for 1 hour, and indicate the degree of deterioration of the molded product.
【００１７】[0017]
【表２】 [Table 2]
【００１８】以上、表２から、実施例のテストピース
は、比較例のテストピースに比べて曲げ強さ、引っ張り
強さが同程度であるにもかかわらず、実施例のものは硬
度が小さく、したがって柔軟性に富み、また実施例のも
のは対数減衰率が大きいことから振動吸収性能に優れて
いることがわかる。From the above, it can be seen from Table 2 that the test piece of the example has a lower hardness than the test piece of the comparative example, though the bending strength and the tensile strength are almost the same. Therefore, it is clear that the embodiment is excellent in the vibration absorption performance because of its high flexibility and the logarithmic decrement.
【００１９】また、加熱負荷処理を施したものに関し
て、実施例のものは、比較例より処理前後で変化が小さ
いことから耐熱性に優れていることがわかる。Further, as for the one subjected to the heating load treatment, the one in the example has a smaller change before and after the treatment than the comparative example, so that it can be seen that the heat resistance is excellent.
【００２０】Ｅ．ＪＩＳ−Ｄ−４４１１による摩擦試験 実施例と比較例のテストピースについて、ＪＩＳ−Ｄ−
４４１１による摩擦試験を行った。その測定結果を表３
に示す。E. Friction test according to JIS-D-4411 For the test pieces of Examples and Comparative Examples, JIS-D-
A 4411 friction test was performed. Table 3 shows the measurement results.
Shown in
【００２１】[0021]
【表３】 [Table 3]
【００２２】以上、表３に明らかなとおり、実施例のテ
ストピースは、比較例のテストピースに比べてμの安定
が高温にまで保たれ、高温の下での摩耗量についても少
ないことがわかった。As is clear from Table 3, the test piece of the example maintains the stability of μ at a high temperature as compared with the test piece of the comparative example, and has a small amount of wear at a high temperature. Was.
【００２３】さらに、シリコーンゴムは、撥水性を有
し、その特性がそのまま摩擦材料の性能に生かされ、本
発明による摩擦材料をブレーキライニング、ディスクパ
ッドに用いたときにブレーキライニング、ディスクパッ
ドは、空気中の水分の影響を受けにくく、したがって、
ウォータ・フェード現象を生じさせず、また、ディスク
パッドのような制動機構側の金物を発錆させることもな
い。また、ダンピング特性に優れるため、ブレーキ音を
小さくするうえにも有効である。なお、摩擦材料に添加
するゴム粉末にアクリルゴムを用いても柔軟性、振動吸
収性能を改善する試みが先に提案されたが、本発明は、
アクリルゴム粉末を使用した摩擦材料に比べても柔軟
性、耐熱性に優れ、ダンピング特性の低下を防止して優
れた摩擦性能が得られる。Furthermore, silicone rubber has water repellency, and its properties are directly utilized in the performance of the friction material. When the friction material according to the present invention is used for a brake lining and a disc pad, the brake lining and the disc pad are Less susceptible to moisture in the air,
It does not cause the water fade phenomenon and does not rust metal on the brake mechanism side such as a disk pad. In addition, since it has excellent damping characteristics, it is effective in reducing brake noise. Incidentally, even if acrylic rubber is used as the rubber powder to be added to the friction material, flexibility, an attempt to improve vibration absorption performance was previously proposed, but the present invention,
Compared to friction materials using acrylic rubber powder, it has excellent flexibility and heat resistance, and prevents deterioration of damping characteristics, thereby obtaining excellent friction performance.
【００２４】[0024]
【発明の効果】以上のように本発明によるときには、摩
擦材中に、シリコーンゴム粉末を添加して摩擦材の柔軟
性、振動吸収性能を大幅に改善し、高温下及び熱履歴後
の摩擦性能を向上できる効果を有する。これが摩擦材料
の信頼性向上に寄与するところは非常に大きく、工業上
極めて有益である。As described above, according to the present invention, the silicone rubber powder is added to the friction material to greatly improve the flexibility and vibration absorption performance of the friction material, and to improve the friction performance at high temperatures and after heat history. Has the effect of improving This greatly contributes to the improvement of the reliability of the friction material, and is extremely useful industrially.
Claims (2)
て、 ゴム粉末は、珪素を主成分とするシリコーンゴムである
ことを特徴とする摩擦材料。1. A friction material to which rubber powder is added, wherein the rubber powder is a silicone rubber containing silicon as a main component.
は、５ｍｍ以下であることを特徴とする請求項１に記載
の摩擦材料。2. The friction material according to claim 1, wherein the particle size of the silicone rubber powder used is 5 mm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21616697A JPH1161104A (en) | 1997-08-11 | 1997-08-11 | Friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21616697A JPH1161104A (en) | 1997-08-11 | 1997-08-11 | Friction material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1161104A true JPH1161104A (en) | 1999-03-05 |
Family
ID=16684327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21616697A Pending JPH1161104A (en) | 1997-08-11 | 1997-08-11 | Friction material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1161104A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005281415A (en) * | 2004-03-29 | 2005-10-13 | Advics:Kk | Friction material |
| WO2012056716A1 (en) | 2010-10-29 | 2012-05-03 | Nisshinbo Brake Inc. | Friction material |
-
1997
- 1997-08-11 JP JP21616697A patent/JPH1161104A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005281415A (en) * | 2004-03-29 | 2005-10-13 | Advics:Kk | Friction material |
| WO2012056716A1 (en) | 2010-10-29 | 2012-05-03 | Nisshinbo Brake Inc. | Friction material |
| JP2012107205A (en) * | 2010-10-29 | 2012-06-07 | Nisshinbo Brake Inc | Friction material |
| CN103221502A (en) * | 2010-10-29 | 2013-07-24 | 日清纺制动器株式会社 | Friction material |
| EP2632995A1 (en) * | 2010-10-29 | 2013-09-04 | Nisshinbo Brake Inc. | Friction material |
| EP2632995A4 (en) * | 2010-10-29 | 2014-11-12 | Nisshinbo Brake Inc | Friction material |
| CN103221502B (en) * | 2010-10-29 | 2015-04-15 | 日清纺制动器株式会社 | Friction material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100612733B1 (en) | Non-asbestos friction materials | |
| EP3070140B1 (en) | Method of making a friction material | |
| JP6066739B2 (en) | Friction material and manufacturing method thereof | |
| JPS59164381A (en) | Friction material | |
| JPH1161104A (en) | Friction material | |
| Zaharudin et al. | The effect of phenolic resin, rubber, calcium carbonate and graphite on tribological characteristic of semi‐metallic brake | |
| JP2005048009A (en) | Phenolic resin molding compound | |
| RU2175335C2 (en) | Method of preparing friction polymeric materials | |
| RU2036936C1 (en) | Polymeric composition of friction purpose | |
| Akıncıoğlu et al. | Evaluation of the physical properties of hazelnut shell dust-added brake pad samples treated with cryogenic process | |
| JPH06122865A (en) | Friction material | |
| JPH0741567A (en) | Friction material | |
| KR100522254B1 (en) | The method of manufacture the brake lining(or pad). | |
| SU462472A1 (en) | Method of producing friction material | |
| JP2004204031A (en) | Phenolic resin molding material | |
| JPS594459B2 (en) | Friction modifier | |
| JP2004169814A (en) | Brake pad and its manufacturing method | |
| JP5509451B2 (en) | Thermosetting resin composition for binding material of friction material and method for producing the same | |
| JPH0617030A (en) | Brake friction material | |
| JPH023050B2 (en) | ||
| JP3444696B2 (en) | Brake piston | |
| JPH03134087A (en) | Heat-resistant friction material and preparation of the same | |
| SU533609A1 (en) | Anti-friction press composition "thermoanthracitoplast" | |
| CN117624809A (en) | Heat-conducting high-temperature-resistant deformation-resistant fluororubber and preparation method thereof | |
| RU2144547C1 (en) | Method of preparing polymeric composition |