JP2005047271A - 平面状の炭素繊維織物を基礎とする摩擦材料の製造方法及びその方法により製造された摩擦材料 - Google Patents
平面状の炭素繊維織物を基礎とする摩擦材料の製造方法及びその方法により製造された摩擦材料 Download PDFInfo
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/71—Ceramic products containing macroscopic reinforcing agents
- C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
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- F16D69/023—Composite materials containing carbon and carbon fibres or fibres made of carbonizable material
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
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Abstract
【解決手段】結合材で含浸された繊維材料(プリプレグ)を形成するため結合材による炭素繊維織物の含浸を含む、平面状の炭素繊維織物を基礎とする湿性摩擦要素のための摩擦材料の製造方法において、プリプレグ1が硬化期間中周囲温度に対し高められた硬化温度下で硬化され、硬化期間の開始前、又は硬化期間の少なくとも一部の期間にわたって、又は硬化期間の開始前及び硬化期間の少なくとも一部の期間にわたって、プリプレグ1がその表面に加圧手段2を用いて機械的に圧力を加えられる。
【選択図】図4
Description
摩擦材料に対する出発材料は、図1及び図2に基づくあや織り2/2の斜めに延びる流路状のくぼみを有する織物を形成した。この織物は、レゾール系の液状樹脂を、全質量の50%の樹脂含有量になるように含浸された。このようにして作られたプリプレグの硬化プロセスは、約80℃の温度で約50分にわたる処理で始められた。図4による機械的な加圧プロセスの枠組みにおける加圧力の印加は2段階で行われ、その第1の約10分の加圧段階は硬化プロセスの開始後約50分で始められ、約4・105Paの加圧力のもとに行われ、一方続く第2の加圧段階に対しては加圧力は約7・105Paに高められ、その第2の加圧段階は約65分継続した。特に第1の加圧段階の開始と同時に、硬化温度は、第2の加圧段階が始まるちょっと前に約130℃に達するように高められた。第2の加圧段階の経過においてさらに硬化温度はもう一度高められ、好ましくは約150℃に高められた。硬化温度を周囲温度に下げることによって、第2の加圧段階も加圧力を周囲圧に下げることによりほぼ同時に終了した。硬化温度を高め始めてからその周囲温度へ下げるまでの全硬化時間は約125分であった。
上述の好ましい方法に従い作られた6つの試料と同じ50重量%の樹脂含有量を有するが加圧されない1つの試料との間の材料特性の相違を確認するため、これらの試料が圧縮試験及び試験規格ASTM F 36-66によるスプリングバック試験にかけられた。この規格に従えば、厚さaの各試料が先ず無負荷状態で測定され、22.2N(5lbf)で15秒の負荷後測定され厚さpが生じ、1112N(250lbf)で60秒の負荷後測定され厚さmが生じ、さらに22.2N(5lbf)で15秒の負荷後測定され厚さrが生じる(表2参照)。
2 加圧手段
4 プレススタンプ
6 プレスマスタ
8 剥離箔
10 くぼみ
12 稜線
Claims (17)
- 結合材で含浸された繊維材料(プリプレグ)を形成するため結合材による炭素繊維織物の含浸を含む、平面状の炭素繊維織物を基礎とする湿性摩擦要素のための摩擦材料の製造方法において、プリプレグ(1)が硬化期間中周囲温度に対し高められた硬化温度下で硬化され、硬化期間の開始前、又は硬化期間の少なくとも一部の期間にわたって、又は硬化期間の開始前及び硬化期間の少なくとも一部の期間にわたって、プリプレグがその表面に加圧手段(2)を用いて機械的に圧力を加えられることを特徴とする摩擦材料の製造方法。
- 加圧力が4〜8.105Paの範囲にあることを特徴とする請求項1記載の方法。
- 結合材の成分が摩擦材料全質量に対し25〜50重量%の範囲にあることを特徴とする請求項1又は2記載の方法。
- 硬化温度が50〜180℃の範囲にあることを特徴とする請求項1〜4のいずれか1つに記載の方法。
- 結合材としてフェノール樹脂が使用されることを特徴とする請求項1〜4のいずれか1つに記載の方法。
- プリオウレグ(1)が圧縮の前に両側をそれぞれ剥離箔(8)で覆われることを特徴とする請求項1〜5のいずれか1つに記載の方法。
- 炭素繊維織物を作るために、熱的に安定化されたポリアクリルニトリル繊維からなる糸が織物に使用されるか、又はポリアクリルニトリル繊維からなる糸が織物に使用され、この織物が熱的に安定化され、次いで織物が炭化されることを特徴とする請求項1〜6のいずれか1つに記載の方法。
- 織物の少なくとも表面に流路状のくぼみ(10)が存在するように糸が互いに織り合わされることを特徴とする請求項7記載の方法。
- 織物があや織りを有するように織られることを特徴とする請求項8記載の方法。
- 加圧が加圧手段(2)によって行われ、そのプリプレグ(1)に向く表面が平らであることを特徴とする請求項8記載の方法。
- 加圧が加圧手段(2)及び剥離箔(8)又はそのいずれか一方によって行われ、その少なくともプリプレグ(1)に向く表面が構造化されていることを特徴とする請求項6記載の方法。
- 加圧手段(2)及び剥離箔(8)又はそのいずれか一方の構造が、プリプレグの少なくとも表面に流路状のくぼみ(10)が押してつけられるように形成されていることを特徴とする請求項11記載の方法。
- 結合材に黒鉛又はカーボンブラックの粒子が添加されることを特徴とする請求項1〜12のいずれか1つに記載の方法。
- 結合材が部分的又は完全に炭化されることを特徴とする請求項1〜13のいずれか1つに記載の方法。
- プリプレグの加圧プロセスが硬化期間の開始後時間をずらして開始され、硬化期間の終了とほぼ同時に終了されることを特徴とする請求項1〜14のいずれか1つに記載の方法。
- 請求項1〜15のいずれか1つに記載の方法により作られ、平らな炭素繊維織物を基礎とする湿式摩擦要素のための摩擦材料。
- 相対圧縮率が8%〜10%の間、相対スプリングバックが80%〜90%の間の値であることを特徴とする湿式摩擦要素のための摩擦材料。
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DE2003134881 DE10334881A1 (de) | 2003-07-29 | 2003-07-29 | Verfahren zur Herstellung eines auf einem flächigen Carbonfaser-Gewebe basierenden Reibmaterials für Nassreibelemente und nach dem Verfahren hergestelltes Reibmaterial |
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CN102409467A (zh) * | 2011-09-27 | 2012-04-11 | 东华大学 | 一种交织与浮长镶嵌方格形电磁屏蔽机织物及其用途 |
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AT504080B1 (de) * | 2006-09-12 | 2008-07-15 | Miba Sinter Austria Gmbh | Verfahren zur herstellung von unrunden zahnriemenrädern oder kettenrädern |
AT504546B1 (de) * | 2006-11-20 | 2017-06-15 | Miba Frictec Gmbh | Nasslaufreibbelag |
DE102007007037A1 (de) * | 2007-02-08 | 2008-08-14 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Planetengetriebe |
US8172061B2 (en) | 2008-09-26 | 2012-05-08 | GM Global Technology Operations LLC | Clutch friction material and method of forming same |
WO2014176301A1 (en) * | 2013-04-25 | 2014-10-30 | Schaeffler Technologies Gmbh & Co. Kg | Thrust washer including wet friction material with resin coated surface |
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DE102015014925B4 (de) | 2015-11-17 | 2017-09-28 | Ronald Hüner | Reibschichten mit Kanalstruktur |
EP3418598A4 (en) * | 2016-02-16 | 2019-11-27 | GKN Driveline Japan Ltd | MORE PLATE CLUTCH |
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- 2004-06-28 ZA ZA2004/05121A patent/ZA200405121B/en unknown
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Publication number | Publication date |
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BRPI0402911A (pt) | 2005-05-31 |
CA2475941A1 (en) | 2005-01-29 |
DE10334881A1 (de) | 2005-03-03 |
EP1505310B1 (de) | 2012-08-08 |
ZA200405121B (en) | 2005-03-30 |
EP1505310A2 (de) | 2005-02-09 |
US7718101B2 (en) | 2010-05-18 |
US20050025951A1 (en) | 2005-02-03 |
EP1505310A3 (de) | 2007-06-13 |
CA2475941C (en) | 2012-04-17 |
JP5113983B2 (ja) | 2013-01-09 |
BRPI0402911B1 (pt) | 2017-04-04 |
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