JPH08109937A - Heat resistant braking material and its manufacture - Google Patents
Heat resistant braking material and its manufactureInfo
- Publication number
- JPH08109937A JPH08109937A JP24519394A JP24519394A JPH08109937A JP H08109937 A JPH08109937 A JP H08109937A JP 24519394 A JP24519394 A JP 24519394A JP 24519394 A JP24519394 A JP 24519394A JP H08109937 A JPH08109937 A JP H08109937A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- additive
- heat
- volume
- imide resin
- 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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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は耐熱ブレーキ材及びその
製造方法に係り、特に、自動車用摩擦材として好適な、
耐摩耗性，相手材攻撃性に優れたアスベスト非含有耐熱
ブレーキ材及びその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat resistant brake material and a method for manufacturing the same, and is particularly suitable as a friction material for automobiles.
The present invention relates to a heat-resistant brake material containing no asbestos, which has excellent wear resistance and aggressiveness against the mating material, and a manufacturing method thereof.
【０００２】[0002]
【従来の技術】自動車や各種産業機械に用いられるブレ
ーキ材のうち、主なものとしてディスクブレーキパッド
及びブレーキライニングがある。このうち、ディスクブ
レーキパッドは乗用車や小型トラックに、また、ブレー
キライニングは大型の車輛に多く用いられている。即
ち、ディスクブレーキパッドは、小型でしかも性能が良
いため、主に乗用車用に用いられている。従来のブレー
キ材の主な構成材料は、繊維材（アスベスト，有機質繊
維，無機質繊維，金属繊維），無機質フィラー材，有機
質フィラー材及びバインダー樹脂であり、これらの１０
〜２０種の材料が混合されてブレーキ材が製造されてい
る。2. Description of the Related Art Among brake materials used in automobiles and various industrial machines, disc brake pads and brake linings are mainly used. Of these, disc brake pads are often used for passenger cars and light trucks, and brake linings are often used for large vehicles. That is, since the disc brake pad is small and has good performance, it is mainly used for passenger cars. The main constituent materials of conventional brake materials are fibrous materials (asbestos, organic fibers, inorganic fibers, metal fibers), inorganic filler materials, organic filler materials and binder resins.
Brake materials are manufactured by mixing ~ 20 kinds of materials.
【０００３】なお、従来において、バインダー樹脂とし
ては一般にフェノール樹脂が用いられ、また、繊維材と
してはアスベストが用いられている。Conventionally, a phenol resin is generally used as the binder resin, and asbestos is used as the fiber material.
【０００４】[0004]
【発明が解決しようとする課題】従来のブレーキ材で
は、摺動面のすりへり摩耗，相手材（ローター，ドラ
ム）に対する高攻撃性，摩擦材表面の摩擦熱によるクラ
ックの発生及びこれによる強度の劣化といった問題があ
り、その改善が望まれている。In the conventional brake material, the frictional wear of the sliding surface, the high aggression with respect to the mating material (rotor, drum), the generation of cracks due to the frictional heat on the surface of the friction material, and the deterioration of the strength due to this There is a problem like that, and its improvement is desired.
【０００５】また、従来のブレーキ材では、繊維材とし
てアスベストが用いられていたが、アスベストは健康上
の問題から使用がひかえられている。Further, in conventional brake materials, asbestos has been used as a fiber material, but asbestos has been used due to health problems.
【０００６】ところで、ブレーキ材において、特に熱間
時のブレーキ特性は重要な要件であることから、ブレー
キ材の熱間時のブレーキ特性を改善することはブレーキ
の高性能化の極めて重要な条件となるが、従来のブレー
キ材でバインダー樹脂として用いられているフェノール
樹脂では、耐熱ブレーキ材としての十分な耐熱性を得る
ことができず、その上、熱間強度が弱いために、熱間
（フェード）時において、摩擦係数や強度といったブレ
ーキ特性が著しく低下するという欠点もある。[0006] By the way, in the brake material, since the braking characteristic especially when hot is an important requirement, improving the braking characteristic when the braking material is hot is an extremely important condition for improving the performance of the brake. However, the phenol resin used as a binder resin in conventional brake materials cannot obtain sufficient heat resistance as a heat-resistant brake material, and moreover, the hot strength is weak, so that the ), The braking characteristics such as friction coefficient and strength are significantly deteriorated.
【０００７】本発明は上記従来の問題点を解決し、耐摩
耗性に優れ、相手材に対する攻撃性も低い上に、熱間時
に高性能を発揮する耐熱ブレーキ材及びその製造方法を
提供することを目的とする。The present invention solves the above-mentioned conventional problems, and provides a heat-resistant brake material having excellent wear resistance, low aggression against a mating material, and high performance during hot working, and a method for manufacturing the same. With the goal.
【０００８】[0008]
【課題を解決するための手段】請求項１の耐熱ブレーキ
材は、ポリアミドイミド樹脂に添加材を混合した後加熱
加圧成形して得られる耐熱ブレーキ材であって、ポリア
ミドイミド樹脂１０〜３５体積％に、添加材として、繊
維材５〜３０体積％、無機質フィラー２０〜４５体積％
及び有機質フィラー１０〜２５体積％を混合してなるこ
とを特徴とする。A heat-resistant brake material according to claim 1 is a heat-resistant brake material obtained by mixing a polyamide-imide resin with an additive and then heating and pressurizing the polyamide-imide resin. %, 5% to 30% by volume of a fibrous material and 20% to 45% by volume of an inorganic filler as an additive.
And 10 to 25% by volume of organic filler are mixed.
【０００９】請求項２の耐熱ブレーキ材は、請求項１に
おいて、繊維材が、アラミド繊維、チタン酸カリウム繊
維、ガラス繊維、カーボン繊維、アルミナ繊維及び金属
繊維よりなる群から選ばれる１種又は２種以上であるこ
とを特徴とする。The heat resistant brake material according to claim 2 is the heat resistant brake material according to claim 1, wherein the fiber material is one or more selected from the group consisting of aramid fiber, potassium titanate fiber, glass fiber, carbon fiber, alumina fiber and metal fiber. It is characterized by being more than one species.
【００１０】請求項３の耐熱ブレーキ材の製造方法は、
請求項１又は２の耐熱ブレーキ材を製造する方法であっ
て、ポリアミドイミド樹脂に予め微量添加材を混合した
後多量添加材を混合し、得られた混合物を２５０〜４０
０℃で３０〜１２０分間加熱加圧成形することを特徴と
する。The manufacturing method of the heat resistant brake material according to claim 3 is:
A method for producing the heat-resistant brake material according to claim 1 or 2, wherein the polyamide-imide resin is mixed with a small amount of additive material in advance, and then a large amount of additive material is mixed, and the resulting mixture is added in an amount of 250 to 40.
It is characterized in that it is heated and pressed at 0 ° C. for 30 to 120 minutes.
【００１１】以下に本発明を詳細に説明する。The present invention will be described in detail below.
【００１２】本発明においては、バインダー樹脂とし
て、耐熱性に優れ、高強度であり、熱間強度も高いポリ
アミドイミド樹脂を用いる。このポリアミドイミド樹脂
の配合割合が１０体積％未満ではバインダー樹脂量が不
足し、成形性が低下し、３５体積％を超えると相対的に
他の添加材の割合が減って十分なブレーキ性能が得られ
なくなることから、ポリアミドイミド樹脂の割合はブレ
ーキ材総量に対して１０〜３５体積％とする。In the present invention, a polyamide-imide resin having excellent heat resistance, high strength and high hot strength is used as the binder resin. If the blending ratio of this polyamide-imide resin is less than 10% by volume, the amount of binder resin will be insufficient and moldability will decrease, and if it exceeds 35% by volume, the ratio of other additives will relatively decrease and sufficient braking performance will be obtained. Therefore, the proportion of the polyamide-imide resin is 10 to 35% by volume with respect to the total amount of the brake material.
【００１３】繊維材は、ブレーキ材の全体の強度を維持
するための補強材として添加する。繊維としては、耐熱
性で、しかもバインダー樹脂や他の添加材と良くなじむ
ものである必要があり、本発明においては、有機質繊維
のうち高耐熱性のアラミド繊維，或いは、アルミナ繊
維，カーボン繊維，チタン酸カリウム繊維等の高強度無
機質繊維、その他ガラス繊維及び金属繊維よりなる群か
ら選ばれる１種又は２種以上、特に、アラミド繊維、ア
ルミナ繊維、カーボン繊維及びチタン酸カリウム繊維の
１種以上を用いるのが好ましい。これら繊維材の割合
は、ブレーキ材総量に対して５〜３０体積％とする。繊
維材が５体積％未満では、どの繊維を用いても強度に対
して十分な向上効果は得られず、３０体積％を超えると
繊維材が多すぎて混合や成形が困難になり、好ましくな
い。The fiber material is added as a reinforcing material for maintaining the overall strength of the brake material. As the fiber, it is necessary that it is heat resistant and is well compatible with the binder resin and other additives. In the present invention, among the organic fibers, high heat resistant aramid fiber, alumina fiber, carbon fiber, titanic acid is used. Use one or more kinds selected from the group consisting of high-strength inorganic fibers such as potassium fibers and other glass fibers and metal fibers, especially one or more kinds of aramid fibers, alumina fibers, carbon fibers and potassium titanate fibers. Is preferred. The ratio of these fiber materials is 5 to 30% by volume with respect to the total amount of the brake material. If the content of the fiber material is less than 5% by volume, the effect of sufficiently improving the strength cannot be obtained regardless of which fiber is used. .
【００１４】このような繊維材の配合により、ブレーキ
材の熱間強度が高められ、ワレやクラックの発生が大幅
に低減される。By blending such a fibrous material, the hot strength of the brake material is increased and cracks and cracks are greatly reduced.
【００１５】無機質フィラー及び有機質フィラーは、得
られるブレーキ材の摩擦係数，フェード，すりへり摩
耗，相手材攻撃性等に効果を及ぼすものであり、実用的
には、熱間強度の高い黒鉛，二硫化モリブデン，三酸化
アンチモン，硫酸バリウム，フェライト，ガーネット，
石英，アルミナ，ジルコニア，マグシア，カシューダス
ト，ゴム，銅等の金属などの粒子或いは粉末の１種又は
２種以上を用いることができる。これらのうち、特に、
黒鉛，二硫化モリブデン，三酸化アンチモン，硫酸バリ
ウム，アルミナ，ジルコニアは摩擦係数に大きく寄与
し、その他の材料も、摩擦係数の他、潤滑性を高める効
果や、耐摩擦性を高める効果、相手材攻撃性を抑える効
果等がある。また、これらのフィラーは熱間での摩擦係
数を維持し、熱間安定性を高めるためにも重要である。The inorganic filler and the organic filler have an effect on the friction coefficient, fade, abrasion of the obtained brake material, the attacking property of the mating material, and the like. In practice, graphite and disulfide having high hot strength are used. Molybdenum, antimony trioxide, barium sulfate, ferrite, garnet,
One or more kinds of particles or powders of metals such as quartz, alumina, zirconia, magsia, cashew dust, rubber and copper can be used. Of these, especially
Graphite, molybdenum disulfide, antimony trioxide, barium sulfate, alumina, and zirconia make a large contribution to the friction coefficient, and other materials have the effect of improving the lubricity and the friction resistance in addition to the coefficient of friction. It has the effect of suppressing aggression. Further, these fillers are also important for maintaining a hot friction coefficient and enhancing hot stability.
【００１６】これらフィラーの割合は少な過ぎるとその
添加効果が十分に得られず、多過ぎてもかえってブレー
キ性能を低下させることとなることから、本発明におい
てはブレーキ材の総量に対して、無機質フィラーを２０
〜４５体積％、有機質フィラーを１０〜２５体積％とす
る。If the proportion of these fillers is too small, the effect of their addition will not be obtained sufficiently, and if they are too large, the braking performance will be rather deteriorated. 20 fillers
To 45% by volume and the organic filler to 10 to 25% by volume.
【００１７】なお、これらのフィラーの大きさは、通常
の場合、平均粒径１〜１００μｍ程度であることが好ま
しい。The size of these fillers is usually preferably about 1 to 100 μm in average particle size.
【００１８】本発明の方法は、ポリアミドイミド樹脂に
対して、上記特定の添加材を所定の配合量で添加混合し
た後加熱加圧成形することにより容易に製造することが
できるが、この添加材の混合に当り、微量添加材、例え
ば配合量がブレーキ材の総量に対して１０体積％以下の
ものを、ポリアミドイミド樹脂に予め添加混合し、十分
な混合状態とした後に多量添加材、例えば配合量がブレ
ーキ材の総量に対して３０体積％以上のものを添加混合
するのが好ましい。このようにして２段階以上の混合作
業を行うことにより、微量添加材及び多量添加材共に、
均一な分散状態でポリアミドイミド樹脂に混合すること
ができ、添加材の添加効果が十分に発揮され、高特性ブ
レーキ材を得ることができる。The method of the present invention can be easily manufactured by adding and mixing the above-mentioned specific additive material in a predetermined compounding amount to the polyamide-imide resin and then heating and pressurizing. In the mixing, a small amount of additive material, for example, a compounding amount of 10% by volume or less with respect to the total amount of the brake material is added to and mixed with the polyamide-imide resin in advance to obtain a sufficiently mixed state, and then a large amount of additive material, for example, compounded. It is preferable to add and mix those having an amount of 30% by volume or more with respect to the total amount of the brake material. By performing the mixing work in two or more stages in this way,
It can be mixed with the polyamide-imide resin in a uniformly dispersed state, the effect of adding the additive can be sufficiently exhibited, and a high-performance brake material can be obtained.
【００１９】加熱加圧成形は、温度２５０〜４００℃、
圧力１５０〜４００ｋｇｆ／ｃｍ2で３０〜１２０分間
実施され、加熱加圧成形後は１５０〜２５０℃で３００
〜６００分間程度加熱ベーキング処理を行う。The heat and pressure molding is carried out at a temperature of 250 to 400 ° C.
It is carried out at a pressure of 150 to 400 kgf / cm 2 for 30 to 120 minutes, and after heat and pressure molding is 300 at 150 to 250 ° C.
A heating baking process is performed for about 600 minutes.
【００２０】このようにして製造される本発明の耐熱ブ
レーキ材は、特に高性能であることから、ブレーキ材の
うち、とりわけディスクブレーキパッドに好適である。The heat-resistant brake material of the present invention produced in this manner is particularly suitable for disc brake pads among the brake materials because it has a particularly high performance.
【００２１】[0021]
【作用】本発明においては、成形のためのバインダー樹
脂として、耐熱性が大きく、しかも強度の高い熱硬化性
樹脂であるポリアミドイミド樹脂を用いる。In the present invention, a polyamide-imide resin, which is a thermosetting resin having high heat resistance and high strength, is used as a binder resin for molding.
【００２２】ポリアミドイミド樹脂は、熱間強度が高
く、熱間時にも十分な強度を維持している。しかも、各
種の添加材に対して、成形時の相性も良く、均質な熱間
成形体を得ることができるといった長所を備える。この
ため、ポリアミドイミド樹脂に、所定量の繊維材、無機
質フィラー及び有機質フィラーといった多種類の添加材
を混合して成形することにより、各添加材の添加効果及
びこれら添加材の相乗効果により優れた摩擦特性及び強
度特性が得られ、更に、ポリアミドイミド樹脂の熱間特
性により熱間での強度及び摩擦特性にも優れたものとな
る。The polyamide-imide resin has high hot strength and maintains sufficient strength even during hot working. In addition, it has an advantage that it is compatible with various additive materials at the time of molding and that a homogeneous hot compact can be obtained. Therefore, by mixing a polyamide-imide resin with a predetermined amount of a fiber material, various kinds of additive materials such as an inorganic filler and an organic filler, and molding the mixture, the addition effect of each additive material and the synergistic effect of these additive materials are excellent. Friction properties and strength properties are obtained, and the hot strength and friction properties are also excellent due to the hot properties of the polyamide-imide resin.
【００２３】なお、ポリアミドイミド樹脂は液体であ
り、微量添加材は予めプレミックスしておくことによ
り、非常に均質な混合物を得ることができ、これにより
高温での摩擦特性はより一層安定したものとなる。It should be noted that the polyamide-imide resin is a liquid, and a very homogeneous mixture can be obtained by pre-mixing the trace amount additive material, whereby the friction characteristics at high temperature are further stabilized. Becomes
【００２４】[0024]
【実施例】以下に実施例及び比較例を挙げて本発明をよ
り具体的に説明する。EXAMPLES The present invention will be described more specifically with reference to Examples and Comparative Examples below.
【００２５】実施例１，２、比較例１ 表１に示す配合にてバインダー樹脂に各添加材を混合
し、加熱温度３５０℃，プレス圧力３００ｋｇｆ／ｃｍ
2 で６０分間加熱加圧成形し、その後、成形金型より成
形体を取り出して３００℃で３０分間加熱処理してディ
スクパッドを製造した。Examples 1 and 2 and Comparative Example 1 Each additive was mixed with the binder resin in the composition shown in Table 1, the heating temperature was 350 ° C., and the pressing pressure was 300 kgf / cm.
2 was heated and pressure-molded for 60 minutes, and then the molded body was taken out from the molding die and heat-treated at 300 ° C. for 30 minutes to manufacture a disk pad.
【００２６】なお、樹脂への添加材の混合は、まず添加
量１０体積％以下の微粒添加材を樹脂に添加混合した
後、３０体積％を超える多量添加材を混合することによ
り行った。The additive material was mixed with the resin by first adding the fine particle additive material with an addition amount of 10% by volume or less to the resin and then mixing the large amount additive material with an addition amount of more than 30% by volume.
【００２７】また、用いた添加材の粒径等は、次の通り
である。The particle diameters of the additives used are as follows.
【００２８】 アラミド繊維：パルプ形状品 カーボン繊維：平均繊維径１０μｍ，平均繊維長さ３ｍ
ｍ チタン酸カリウム繊維：平均繊維径０．３μｍ，平均繊
維長さ０．０１５ｍｍ 黒鉛粉末：平均粒径３０μｍ 硫酸バリウム粉末：平均粒径１０μｍ 炭酸カルシウム粉末：平均粒径５μｍ 二硫化モリブデン粉末：平均粒径３μｍ アルミナ粉末：平均粒径５μｍ 銅粉末：平均粒径１０μｍ カシューダスト：平均粒径３０μｍ ゴム粒子：平均粒径１５μｍ 得られたディスクパッドについて、ダイナモ試験機によ
りフルサイズ摩擦試験をＪＡＳＯ法に準拠して行い、結
果を表１に示した。Aramid fiber: Pulp-shaped product Carbon fiber: Average fiber diameter 10 μm, average fiber length 3 m
m Potassium titanate fiber: average fiber diameter 0.3 μm, average fiber length 0.015 mm Graphite powder: average particle size 30 μm Barium sulfate powder: average particle size 10 μm Calcium carbonate powder: average particle size 5 μm Molybdenum disulfide powder: average particle Diameter 3 μm Alumina powder: Average particle size 5 μm Copper powder: Average particle size 10 μm Cashew dust: Average particle size 30 μm Rubber particle: Average particle size 15 μm Full-size friction test of the obtained disk pad was performed by Dynamo tester in accordance with JASO method. The results are shown in Table 1.
【００２９】[0029]
【表１】 [Table 1]
【００３０】表１より本発明によれば、バインダー樹脂
としてフェノール樹脂を用いた従来品（比較例１）に比
べて、ブレーキ性能に優れ、特に熱間での耐摩耗性，耐
熱性強度が高く、熱間でクラックが発生しにくいため安
全性の高い耐熱ブレーキ材が提供されることが明らかで
ある。From Table 1, according to the present invention, as compared with the conventional product (Comparative Example 1) using the phenol resin as the binder resin, the braking performance is excellent, and particularly, the abrasion resistance and heat resistance strength in hot are high. It is clear that a heat-resistant brake material with high safety is provided because cracks are less likely to occur during heat.
【００３１】[0031]
【発明の効果】以上詳述した通り、本発明の耐熱ブレー
キ材及びその製造方法によれば、耐摩耗性に優れ、相手
材に対する攻撃性も低い上に、熱間時に高性能を発揮す
る耐熱ブレーキ材が提供される。As described in detail above, according to the heat-resistant brake material and the method for producing the same of the present invention, the heat-resistant brake material has excellent wear resistance, low attack to the mating material, and high performance during hot working. Brake material is provided.
Claims (3)
た後加熱加圧成形して得られる耐熱ブレーキ材であっ
て、ポリアミドイミド樹脂１０〜３５体積％に、添加材
として、繊維材５〜３０体積％、無機質フィラー２０〜
４５体積％及び有機質フィラー１０〜２５体積％を混合
してなることを特徴とする耐熱ブレーキ材。1. A heat-resistant brake material obtained by mixing an polyamide imide resin with an additive and then heating and pressurizing the polyamide imide resin, wherein the polyamide imide resin is 10 to 35 volume%, and the fiber material is 5 to 30 volume. %, Inorganic filler 20 to
A heat resistant brake material, characterized by being mixed with 45% by volume and 10 to 25% by volume of an organic filler.
繊維、チタン酸カリウム繊維、ガラス繊維、カーボン繊
維、アルミナ繊維及び金属繊維よりなる群から選ばれる
１種又は２種以上であることを特徴とする耐熱ブレーキ
材。2. The fiber material according to claim 1, wherein the fiber material is one or more selected from the group consisting of aramid fiber, potassium titanate fiber, glass fiber, carbon fiber, alumina fiber and metal fiber. Heat resistant brake material.
する方法であって、ポリアミドイミド樹脂に予め微量添
加材を混合した後多量添加材を混合し、得られた混合物
を２５０〜４００℃で３０〜１２０分間加熱加圧成形す
ることを特徴とする耐熱ブレーキ材の製造方法。3. A method for producing a heat-resistant brake material according to claim 1, wherein the polyamide-imide resin is mixed with a small amount of additive material in advance and then with a large amount of additive material, and the resulting mixture is heated at 250 to 400 ° C. A method for producing a heat-resistant brake material, which comprises heat-press molding for 30 to 120 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24519394A JPH08109937A (en) | 1994-10-11 | 1994-10-11 | Heat resistant braking material and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24519394A JPH08109937A (en) | 1994-10-11 | 1994-10-11 | Heat resistant braking material and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08109937A true JPH08109937A (en) | 1996-04-30 |
Family
ID=17130009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24519394A Withdrawn JPH08109937A (en) | 1994-10-11 | 1994-10-11 | Heat resistant braking material and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08109937A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009123042A1 (en) * | 2008-03-31 | 2009-10-08 | 宇部興産株式会社 | Friction material and resin composition for friction material |
| JP2010090333A (en) * | 2008-10-10 | 2010-04-22 | Toyota Motor Corp | Friction pair |
| WO2012032665A1 (en) * | 2010-09-06 | 2012-03-15 | 作新工業株式会社 | Ultra high molecular weight polyethylene resin composition and sliding resin moldings produced therefrom |
| US20130253119A1 (en) * | 2010-12-06 | 2013-09-26 | Korea Institute Of Ceramic Engineering And Technology | High strength organic/inorganic composite using plate-shaped inorganic particles and method for preparing same |
| CN103671658A (en) * | 2013-12-09 | 2014-03-26 | 淮南矿业(集团)有限责任公司 | Motor vehicle speed reduction piece |
-
1994
- 1994-10-11 JP JP24519394A patent/JPH08109937A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009123042A1 (en) * | 2008-03-31 | 2009-10-08 | 宇部興産株式会社 | Friction material and resin composition for friction material |
| JP2009242656A (en) * | 2008-03-31 | 2009-10-22 | Ube Ind Ltd | Friction material and resin composition for friction material |
| US8748509B2 (en) | 2008-03-31 | 2014-06-10 | Ube Industries, Ltd. | Friction material and resin composition for friction material |
| JP2010090333A (en) * | 2008-10-10 | 2010-04-22 | Toyota Motor Corp | Friction pair |
| US20120085605A1 (en) * | 2008-10-10 | 2012-04-12 | Toyota Jidosha Kabushiki Kaisha | Friction couple |
| US8789666B2 (en) * | 2008-10-10 | 2014-07-29 | Toyota Jidosha Kabushiki Kaisha | Friction couple |
| WO2012032665A1 (en) * | 2010-09-06 | 2012-03-15 | 作新工業株式会社 | Ultra high molecular weight polyethylene resin composition and sliding resin moldings produced therefrom |
| US20130253119A1 (en) * | 2010-12-06 | 2013-09-26 | Korea Institute Of Ceramic Engineering And Technology | High strength organic/inorganic composite using plate-shaped inorganic particles and method for preparing same |
| CN103671658A (en) * | 2013-12-09 | 2014-03-26 | 淮南矿业(集团)有限责任公司 | Motor vehicle speed reduction piece |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20020115 |