JP2001311072A - Friction material composition and friction material produced by using the same - Google Patents
Friction material composition and friction material produced by using the sameInfo
- Publication number
- JP2001311072A JP2001311072A JP2000132926A JP2000132926A JP2001311072A JP 2001311072 A JP2001311072 A JP 2001311072A JP 2000132926 A JP2000132926 A JP 2000132926A JP 2000132926 A JP2000132926 A JP 2000132926A JP 2001311072 A JP2001311072 A JP 2001311072A
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- Japan
- Prior art keywords
- friction material
- material composition
- weight
- alloy
- shape memory
- 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.)
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Links
Landscapes
- Braking Arrangements (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車、鉄道車
両、各種産業機械等の制動に用いられるディスクブレー
キパッド、ブレーキライニング等の摩擦材に適した摩擦
材組成物及び摩擦材組成物を用いた摩擦材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a friction material composition suitable for a friction material such as a disc brake pad and a brake lining used for braking automobiles, railway vehicles, various industrial machines and the like, and a friction material composition. Related to friction material.
【０００２】[0002]
【従来の技術】自動車、鉄道車両、各種産業機械等に
は、その制動のためディスクブレーキパッド、ブレーキ
ライニング等の摩擦材が使用されている。この摩擦材と
して、従来は特開昭64-87930号公報、特開平2-117985号
公報等に示されるようにスチール繊維を主構成繊維とし
たセミメタリック系摩擦材が主流であったが、自動車産
業界の軽量化、高級化への移行に沿って、オートマチッ
ク車の発進時や停止時の異音発生（ノイズの発生）、低
温での制動力不足、摩耗粉によるホイール汚れ等の問題
点が出て来た。2. Description of the Related Art Friction materials such as disc brake pads and brake linings are used in automobiles, railway vehicles, various industrial machines and the like for braking. Conventionally, as this friction material, a semi-metallic friction material containing steel fibers as a main constituent fiber was mainly used as disclosed in JP-A-64-87930, JP-A-2-17985, etc. As the industry shifts to lighter and more sophisticated vehicles, problems such as abnormal noise when starting and stopping automatic vehicles (generation of noise), insufficient braking power at low temperatures, and wheel contamination due to abrasion powder are increasing. Came out.
【０００３】これらの問題点を解消するため、スチール
繊維の代替として銅繊維、黄銅繊維等の非鉄金属繊維、
アラミド繊維、セラミック繊維等の有機繊維や無機繊
維、さらに無機材料を使用したノンスチール摩擦材への
移行が急速に進んできた。また、従来から低燃費や電気
自動車への移行が進むにつれて、軽量化が要求され、上
記の問題点を解消するために、根本的な重量低減を図る
必要性が生じてきた。[0003] In order to solve these problems, non-ferrous metal fibers such as copper fiber and brass fiber are used instead of steel fiber.
The transition to non-steel friction materials using organic fibers and inorganic fibers such as aramid fibers and ceramic fibers, as well as inorganic materials, has rapidly progressed. Further, conventionally, as the fuel economy and the transition to electric vehicles have progressed, weight reduction has been required, and it has become necessary to reduce the weight fundamentally in order to solve the above problems.
【０００４】従来の技術では、無機繊維、有機繊維、金
属繊維等で強度を補強してきたが、軽量化が進むにつれ
て、金属の絶対量を低減し、補強性を維持し、かつ安定
な摩擦係数（μ≧０．３０）を得ることが可能な摩擦材
が得られていないのが現状である。In the prior art, the strength has been reinforced with inorganic fibers, organic fibers, metal fibers, etc., but as the weight is reduced, the absolute amount of metal is reduced, the reinforcing property is maintained, and a stable friction coefficient is maintained. At present, a friction material capable of obtaining (μ ≧ 0.30) has not been obtained.
【０００５】[0005]
【発明が解決しようとする課題】請求項１及び２記載の
発明は、軽量化に対応し、補強性を維持し、かつ安定し
た摩擦係数を得ることが可能な摩擦材に適した摩擦材組
成物を提供するものである。請求項３記載の発明は、軽
量化に対応し、補強性を維持し、かつ安定した摩擦係数
を得ることが可能な摩擦材を提供するものである。SUMMARY OF THE INVENTION According to the first and second aspects of the present invention, a friction material composition suitable for a friction material capable of maintaining a reinforcing property and achieving a stable friction coefficient in response to weight reduction. It provides things. The third aspect of the present invention is to provide a friction material capable of coping with weight reduction, maintaining a reinforcing property, and obtaining a stable friction coefficient.
【０００６】[0006]
【課題を解決するための手段】本発明は、全組成物中に
形状記憶合金を１〜４０重量％含有してなる摩擦材組成
物に関する。また、本発明は、形状記憶合金が、１００
℃以上の温度で変形する前の形状に戻る熱弾性型マルテ
ンサイト変態の合金である摩擦材組成物に関する。さら
に、本発明は、上記の摩擦材組成物を加熱加圧成形して
なる摩擦材に関する。The present invention relates to a friction material composition comprising 1 to 40% by weight of a shape memory alloy in the whole composition. Further, the present invention relates to a method for manufacturing a shape memory alloy, comprising:
The present invention relates to a friction material composition that is a thermoelastic martensitic transformation alloy that returns to a shape before being deformed at a temperature of not less than ° C. Further, the present invention relates to a friction material obtained by heating and pressing the above friction material composition.
【０００７】[0007]
【発明の実施の形態】本発明において形状記憶合金と
は、見掛けの上では塑性変形を起こしているのに加熱す
ると、記憶していたかのように変形する前の形状にもど
る性質をもつ合金を意味するものである。BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, the shape memory alloy means an alloy having a property that, when apparently undergoing plastic deformation, when heated, returns to the shape before deformation as if it had been memorized. Is what you do.
【０００８】また、熱弾性型マルテンサイト変態とは、
金属における原子配列、すなわち結晶構造の異なるいく
つかの状態（これを相という）があり、構成金属元素の
成分、温度又は圧力が変化したとき起きる相変態のこと
をマルテンサイト変態といい、さらに化学的自由エネル
ギ減少の熱効果と、非化学的自由エネルギ増加の弾性効
果との平衡状態が変態の全過程を通じて保持されている
ようなマルテンサイト変態を熱弾性型というものであ
る。The thermoelastic martensitic transformation is
There are atomic arrangements in metals, that is, several states with different crystal structures (this is called a phase). The phase transformation that occurs when the composition, temperature, or pressure of the constituent metal elements changes is called martensitic transformation. The martensitic transformation in which the equilibrium state between the thermal effect of reducing the free energy of energy and the elastic effect of increasing the non-chemical free energy is maintained throughout the transformation is called thermoelastic.
【０００９】形状記憶合金の含有量は、全組成物中に１
〜４０重量％、好ましくは１〜２０重量％、さらに好ま
しくは１〜１０重量％の範囲とされ、１重量％未満であ
ると安定した摩擦係数（μ≧０．３０）を得ることがで
きない。一方、４０重量％を越えるとノイズ（７０ｄＢ
以上の音圧）を抑えることができず、また軽量化に対応
することができない。[0009] The content of the shape memory alloy is 1 in the total composition.
The range is from about 40% by weight, preferably from 1 to 20% by weight, and more preferably from 1 to 10% by weight. If it is less than 1% by weight, a stable friction coefficient (μ ≧ 0.30) cannot be obtained. On the other hand, if it exceeds 40% by weight, noise (70 dB)
The above-mentioned sound pressure) cannot be suppressed, and the weight cannot be reduced.
【００１０】形状記憶合金としては、１００℃以上、好
ましくは１２０℃以上、さらに好ましくは１３０〜２０
０℃の温度で加熱することにより変形する前の形状に戻
る熱弾性型のマルテンサイト変態の合金を用いることが
好ましく、このような合金としては、Ｔｉ−Ｎｉ、Ｃｕ
−Ｚｎ−Ａｌ、Ｃｕ−Ａｌ−Ｎｉ等を用いることが好ま
しい。形状記憶合金は、直径が２〜５mmで、長さが５〜
５０mmの範囲で合金を用いれば補強性に優れ、特に剪断
強度が目標値の２００００（Ｎ）以上にすることが可能
であるので好ましい。As the shape memory alloy, 100 ° C. or more, preferably 120 ° C. or more, more preferably 130 to 20 ° C.
It is preferable to use a thermoelastic martensitic transformation alloy that returns to a shape before being deformed by heating at a temperature of 0 ° C. Examples of such an alloy include Ti—Ni and Cu.
It is preferable to use -Zn-Al, Cu-Al-Ni, or the like. Shape memory alloy is 2-5mm in diameter and 5-5mm in length
It is preferable to use an alloy in the range of 50 mm because the alloy has excellent reinforcing properties, and in particular, the shear strength can be increased to the target value of 20000 (N) or more.
【００１１】本発明の形状記憶合金は、上記に示す合金
の表面を切削機で同一方向に削ってささくれを作製し、
次いで加熱（形状記憶処理）して松かさが開いたように
ささくれの端を浮遊させ、その後一度常温で外周に荷重
をかけて浮遊している部分を表面に付着するように変形
させておき、このものを成形前の摩擦材組成物の一成分
として用いるものである。上記のささくれは、常温では
浮遊せず、加熱加圧成形時に浮遊し、摩擦材としての補
強性を保持させる効果がある。[0011] The shape memory alloy of the present invention, by cutting the surface of the alloy shown above in the same direction with a cutting machine, to produce a sag,
Then, heat (shape memory processing) to float the ends of the pines as if the pine cone had opened, and then apply a load to the outer periphery once at room temperature to deform the floating parts so that they would adhere to the surface. This is used as one component of the friction material composition before molding. The above-mentioned sprinkle does not float at normal temperature, but floats at the time of hot press molding, and has an effect of retaining the reinforcing properties as a friction material.
【００１２】なお、ささくれの長さ及び幅については特
に制限はないが、例えば長さについては、形状記憶合金
の直径より大きいことが好ましく、直径の２倍以上であ
ることがさらに好ましい。また幅は、０．５〜２．５mm
の範囲であることが好ましい。There are no particular restrictions on the length and width of the burrs, but for example, the length is preferably larger than the diameter of the shape memory alloy, and more preferably twice or more the diameter. The width is 0.5 to 2.5 mm
Is preferably within the range.
【００１３】本発明におけるノイズの目標値は、ＪＡＳ
Ｏ Ｃ４０２の実車試験を行い、試験中の異音を測定
し、７０dB以上の音圧発生回数が２８５０回中、２０回
以下である。The target value of the noise in the present invention is JAS
An actual vehicle test of OC402 was performed, and abnormal noise during the test was measured. The number of times of generation of sound pressure of 70 dB or more was 20 or less out of 2850 times.
【００１４】本発明における摩擦材組成物は、形状記憶
合金の他に、結合剤、補強繊維、潤滑剤、充填剤、研削
剤等が用いられ、さらに必要に応じ黄銅、青銅等の金属
粉が用いられる。In the friction material composition of the present invention, a binder, a reinforcing fiber, a lubricant, a filler, a grinding agent and the like are used in addition to the shape memory alloy. If necessary, a metal powder such as brass and bronze is used. Used.
【００１５】本発明で用いられる結合剤は、フェノール
樹脂、エポキシ樹脂、メラミン樹脂等が挙げられ、この
うちフェノール樹脂を用いることが好ましく、特にノボ
ラック樹脂、固形アンモニアレゾール樹脂、シリコン変
性フェノール樹脂、アクリルゴム変性フェノール樹脂を
用いることが好ましい。The binder used in the present invention includes phenol resins, epoxy resins, melamine resins and the like. Of these, phenol resins are preferable, and in particular, novolak resins, solid ammonia resole resins, silicon-modified phenol resins, acrylic resins It is preferable to use a rubber-modified phenol resin.
【００１６】本発明では上記結合剤に必要に応じ硬化剤
が添加される。結合剤は、成形性などの点から全組成物
中に５〜２０重量％含有することが好ましく、８〜１４
重量％含有することがさらに好ましい。また、必要に応
じ添加される硬化剤は、ヘキサメチレンテトラミン、パ
ラホルムアルデヒド、トリオキサン等が用いられ、結合
剤中に８〜１４重量％含有することが好ましく、１０〜
１２重量％含有することがさらに好ましい。In the present invention, a curing agent is added to the above binder, if necessary. The binder is preferably contained in the entire composition in an amount of 5 to 20% by weight from the viewpoint of moldability and the like, and 8 to 14% by weight.
More preferably, it is contained by weight. Further, as a curing agent added as needed, hexamethylenetetramine, paraformaldehyde, trioxane, or the like is used, and the content is preferably 8 to 14% by weight in the binder,
More preferably, the content is 12% by weight.
【００１７】補強繊維としては、ガラス繊維、セラミッ
ク繊維、炭素繊維、鉱物繊維等の無機繊維、アラミド繊
維、ポリアミド繊維、ポリイミド繊維等の有機繊維、銅
繊維、黄銅繊維、スチール繊維等の金属繊維が用いられ
る。補強繊維は全組成物中に０．５〜１６重量％含有す
ることが好ましく、３〜１０重量％含有することがさら
に好ましい。補強繊維の長さは材質により異なり、例え
ば無機繊維は１５〜５０mmが好ましく、２０〜４５mmが
さらに好ましい。有機繊維は０．８〜４mmが好ましく、
１〜２mmがさらに好ましい。また金属繊維は１〜５mmが
好ましく、２〜４mmがさらに好ましい。Examples of the reinforcing fibers include inorganic fibers such as glass fibers, ceramic fibers, carbon fibers, and mineral fibers; organic fibers such as aramid fibers, polyamide fibers, and polyimide fibers; and metal fibers such as copper fibers, brass fibers, and steel fibers. Used. The reinforcing fiber is preferably contained in the entire composition in an amount of 0.5 to 16% by weight, more preferably 3 to 10% by weight. The length of the reinforcing fiber varies depending on the material. For example, the inorganic fiber preferably has a length of 15 to 50 mm, more preferably 20 to 45 mm. Organic fibers are preferably 0.8-4 mm,
1-2 mm is more preferred. The metal fiber is preferably 1 to 5 mm, more preferably 2 to 4 mm.
【００１８】また潤滑剤としては、黒鉛、硫化アンチモ
ン、硫化モリブデン等が、充填剤としては、カシューダ
スト、ゴムダスト、硫酸バリウム、炭酸カルシウム、炭
酸マグネシウム、シリカ等が、研削剤としては、アルミ
ナ粉、ジルコンサンド粉等が一種又は二種以上混合して
用いられる。潤滑剤は全組成物中に２〜８重量％含有す
ることが好ましく、３〜６重量％含有することがさらに
好ましい。充填剤は全組成物中に１０〜６０重量％含有
することが好ましく、２０〜５０重量％含有することが
さらに好ましい。研削剤は全組成物中に０．１〜１０重
量％含有することが好ましく、０．５〜８重量％含有す
ることがさらに好ましい。さらに必要に応じて添加する
金属粉は全組成物中に１〜８重量％含有することが好ま
しく、３〜６重量％含有することがさらに好ましい。摩
擦材組成物を構成する各成分の使用割合は、それらの総
量が１００重量％になるように調整される。As a lubricant, graphite, antimony sulfide, molybdenum sulfide, etc., as a filler, cashew dust, rubber dust, barium sulfate, calcium carbonate, magnesium carbonate, silica, etc., as an abrasive, alumina powder, Zircon sand powder or the like is used alone or in combination of two or more. The lubricant is preferably contained in the entire composition at 2 to 8% by weight, more preferably at 3 to 6% by weight. The filler is preferably contained in the entire composition in an amount of 10 to 60% by weight, more preferably 20 to 50% by weight. The abrasive is preferably contained in the entire composition at 0.1 to 10% by weight, more preferably 0.5 to 8% by weight. Further, the metal powder optionally added is preferably contained in the entire composition in an amount of 1 to 8% by weight, more preferably 3 to 6% by weight. The usage ratio of each component constituting the friction material composition is adjusted so that the total amount thereof becomes 100% by weight.
【００１９】本発明になる摩擦材組成物は、各成分が適
宜の順序で混合して製造される。また、本発明になる摩
擦材は、金型内に裏金及び摩擦材組成物を挿設及び充填
した後、加熱加圧成形法で成形し、その後熱処理を行っ
て得られる。なお成形する際の加熱温度は１３０〜１７
０℃が好ましく、１４０〜１６０℃がより好ましい。圧
力は３０〜６０MPaが好ましく、４０〜５５MPaがより好
ましい。熱処理温度は１００〜３００℃が好ましく、１
５０〜２５０℃がより好ましい。The friction material composition according to the present invention is produced by mixing the respective components in an appropriate order. Further, the friction material according to the present invention is obtained by inserting and filling a backing metal and a friction material composition in a mold, molding by a heat-press molding method, and then performing a heat treatment. The heating temperature during molding is 130 to 17
0 ° C is preferred, and 140 to 160 ° C is more preferred. The pressure is preferably from 30 to 60 MPa, more preferably from 40 to 55 MPa. The heat treatment temperature is preferably 100 to 300 ° C.
50-250 degreeC is more preferable.
【００２０】[0020]
【実施例】以下本発明の実施例を説明するが、本発明は
これに制限するものではない。EXAMPLES Examples of the present invention will be described below, but the present invention is not limited thereto.
【００２１】実施例１〜５、比較例１〜２ 直径が３mmで長さが５〜５０mｍのＴｉ−Ｎｉ合金の表
面を切削機で同一方向に削って長さが４mmで幅が０．５
〜１．５mmのささくれ作製し、次いで１５０℃に加熱
（形状記憶処理）してささくれの端を浮遊させ、熱弾性
型マルテンサイト変態の形状記憶合金を得た。この後、
常温で、上記の熱弾性型マルテンサイト変態の形状記憶
合金を３．２mmの円筒状のパイプを通してささくれの浮
遊している部分を表面に付着するように変形させた。Examples 1 to 5 and Comparative Examples 1 and 2 The surface of a Ti-Ni alloy having a diameter of 3 mm and a length of 5 to 50 mm was cut in the same direction with a cutting machine to have a length of 4 mm and a width of 0.5.
An umbrella having a thickness of about 1.5 mm was produced, and then heated to 150 ° C. (shape memory treatment) to float the end of the umbrella to obtain a thermoelastic martensitic transformation shape memory alloy. After this,
At room temperature, the above-mentioned thermoelastic martensitic transformation shape memory alloy was deformed through a 3.2 mm cylindrical pipe so that the floating portion of the scab attached to the surface.
【００２２】次に、ささくれの浮遊している部分を変形
させた熱弾性型マルテンサイト変態の形状記憶合金に、
表１に示す量の他の材料を配合し、混合機で均一に混合
して摩擦材組成物を得た。この後、金型内に裏金及び摩
擦材組成物を挿設及び充填した後、１５０℃及び圧力４
０MPaの条件で１２分間加熱加圧成形し、さらに２００
℃で５時間熱処理を行ってディスクブレーキパッドを得
た。Next, a thermo-elastic martensitic transformation shape memory alloy obtained by deforming the floating portion of the sacrificer
The other materials in the amounts shown in Table 1 were blended and uniformly mixed by a mixer to obtain a friction material composition. Thereafter, the backing metal and the friction material composition are inserted and filled in the mold, and then heated at 150 ° C. and a pressure of 4 ° C.
Heat and pressure molding for 12 minutes under the condition of 0MPa, further 200
Heat treatment was performed at 5 ° C. for 5 hours to obtain a disc brake pad.
【００２３】[0023]
【表１】 [Table 1]
【００２４】次に、本発明になるディスクブレーキパッ
ドと比較例のディスクブレーキパッドとについて、比較
試験を行った。その結果を表２に示す。なお試験条件は
下記の通りである。Next, a comparative test was performed on the disc brake pad according to the present invention and the disc brake pad of the comparative example. Table 2 shows the results. The test conditions are as follows.
【００２５】 剪断強度 ＪＡＳＯ Ｃ４２７に従い、２２℃及び３００℃におけ
る強度を測定した。 異音の発生状況及び効力 ３０００ccのオートマチック車（日産自動車(株)製、車
種名セドリック（Ｙ３３））でＪＡＳＯ Ｃ４０２の実
車試験を行い、試験中の異音を測定し、７０ｄＢ以上の
異音の発生率及び最大音圧を求めた。また効力について
は、試験中のディスクブレーキとしての効力をμ値で、
相手材表面攻撃量をロータの研削量で評価した。 成形性 ディスクブレーキパッドの外観を目視し、皺及び亀裂の
発生の有無について観察した。Shear strength The strength at 22 ° C. and 300 ° C. was measured according to JASO C427. Abnormal noise generation status and effectiveness A 3000cc automatic vehicle (Nissan Motor Co., Ltd., model name Cedric (Y33)) was tested on the actual car of JASO C402, and the abnormal noise during the test was measured. The incidence and maximum sound pressure were determined. As for the effect, the effect as a disc brake during the test is expressed in μ value,
The amount of attack on the surface of the mating material was evaluated by the amount of grinding of the rotor. Formability The appearance of the disc brake pad was visually observed, and the occurrence of wrinkles and cracks was observed.
【００２６】[0026]
【表２】 [Table 2]
【００２７】表２に示されるように、本発明になるディ
スクブレーキパッドは、皺及び亀裂の発生がなく、全て
の特性に優れていることが確認された。これに対し比較
例１のディスクブレーキパッドは、剪断強度に欠点が生
じ、比較例２のディスクブレーキパッドは、実車異音発
生率及び実車異音最大音圧に欠点が生じた。As shown in Table 2, it was confirmed that the disc brake pad according to the present invention was free of wrinkles and cracks and was excellent in all characteristics. On the other hand, the disc brake pad of Comparative Example 1 had a defect in shear strength, and the disc brake pad of Comparative Example 2 had defects in the actual vehicle abnormal noise generation rate and the actual vehicle abnormal noise maximum sound pressure.
【００２８】[0028]
【発明の効果】請求項１及び２における摩擦材組成物
は、軽量化に対応し、補強性を維持し、かつ安定した摩
擦係数（μ≧０．３０）を得ることが可能な摩擦材を提
供することができる。請求項３における摩擦材は、軽量
化に対応し、補強性を維持し、かつ安定した摩擦係数
（μ≧０．３０）を得ることが可能で、工業的に極めて
好適である。According to the first and second aspects of the present invention, there is provided a friction material composition capable of maintaining a reinforcing property and achieving a stable friction coefficient (μ ≧ 0.30) in response to weight reduction. Can be provided. The friction material according to the third aspect is suitable for weight reduction, can maintain a reinforcing property, and can obtain a stable friction coefficient (μ ≧ 0.30), and is industrially extremely suitable.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０８Ｌ 101/00 Ｃ０８Ｌ 101/00 Ｆ１６Ｄ 69/02 Ｆ１６Ｄ 69/02 Ｄ // Ｂ２９Ｌ 31:16 Ｂ２９Ｌ 31:16 Ｆターム(参考） 3J058 BA68 BA76 FA01 FA11 FA21 GA01 GA07 GA12 GA20 GA28 GA34 GA37 GA55 GA65 GA92 GA95 4F071 AA01 AB06 AF28 AF60 DA01 DA04 DA07 DA13 DA15 4F204 AA12 AA37 AA38 AA39 AB25 AD16 AH17 FA01 FB01 FB21 FE06 FF06 FN11 FQ01 FQ15 4J002 CC041 CC071 CC181 CD001 DC006 FA040 FD010 FD147 FD170 GM03 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification code FI Theme coat ゛ (Reference) C08L 101/00 C08L 101/00 F16D 69/02 F16D 69/02 D // B29L 31:16 B29L 31:16 F term (reference) 3J058 BA68 BA76 FA01 FA11 FA21 GA01 GA07 GA12 GA20 GA28 GA34 GA37 GA55 GA65 GA92 GA95 4F071 AA01 AB06 AF28 AF60 DA01 DA04 DA07 DA13 DA15 4F204 AA12 AA37 AA38 AA39 AB25 AD16 AH17 FA01 FB01 FB01 F11 FE06 CC071 CC181 CD001 DC006 FA040 FD010 FD147 FD170 GM03
Claims (3)
量％含有してなる摩擦材組成物。1. A friction material composition comprising 1 to 40% by weight of a shape memory alloy in all compositions.
変形する前の形状に戻る熱弾性型マルテンサイト変態の
合金である請求項１記載の摩擦材組成物。2. The friction material composition according to claim 1, wherein the shape memory alloy is a thermoelastic martensitic transformation alloy that returns to a shape before deformation at a temperature of 100 ° C. or higher.
熱加圧成形してなる摩擦材。3. A friction material formed by heating and pressing the friction material composition according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000132926A JP2001311072A (en) | 2000-04-27 | 2000-04-27 | Friction material composition and friction material produced by using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000132926A JP2001311072A (en) | 2000-04-27 | 2000-04-27 | Friction material composition and friction material produced by using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001311072A true JP2001311072A (en) | 2001-11-09 |
Family
ID=18641528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000132926A Pending JP2001311072A (en) | 2000-04-27 | 2000-04-27 | Friction material composition and friction material produced by using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001311072A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006505655A (en) * | 2002-11-04 | 2006-02-16 | ザ・ボーイング・カンパニー | Polymer composite structure reinforced with shape memory alloy and manufacturing method thereof |
| EP1767804A1 (en) * | 2005-09-27 | 2007-03-28 | C.R.F. Societa Consortile per Azioni | Disk-brake device with shape memory damping means |
-
2000
- 2000-04-27 JP JP2000132926A patent/JP2001311072A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006505655A (en) * | 2002-11-04 | 2006-02-16 | ザ・ボーイング・カンパニー | Polymer composite structure reinforced with shape memory alloy and manufacturing method thereof |
| EP1767804A1 (en) * | 2005-09-27 | 2007-03-28 | C.R.F. Societa Consortile per Azioni | Disk-brake device with shape memory damping means |
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