JP2017515771A - 炭素/炭素複合材料の製造方法 - Google Patents
炭素/炭素複合材料の製造方法 Download PDFInfo
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- 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
- F16D2200/0082—Production methods therefor
- F16D2200/0091—Impregnating a mat of fibres with a binder
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- 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
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/12—Discs; Drums for disc brakes
Abstract
Description
本明細書で「液体炭素前駆体組成物」は、加熱時に炭素を形成する液体組成物を意味する。
実施例1−プリフォームの作製
液体前駆体は、米国特許仮出願第61/660417号(代理人整理番号72593)の実施例1に記載された手順に従って作製する。炭素繊維は成形型内に入れる。等重量の液体前駆体を布地に流し込み、浸漬させる。成形型を真空引きして、閉じ込められた空気を除去する。次いで成形型を加熱して、液体前駆体を硬化する。次の硬化予定を適用する。
実施例1のプリフォームに、本明細書で実施形態1〜3に開示するようなCVI処理を施す。以下の実施形態1〜3に使用したCVI処理は、米国特許第6,197,374号の実験実施例2に記載のように実施する。
炭素(C)または炭化ケイ素(SiC)などの耐火性基材の化学気相浸透処理は主に、繊維強化された複合材料(英語文献では、セラミックマトリックス複合材料[Ceramic Matrix Composite:CMC]とも称される)の製造に使用される。炭素繊維構造体中の炭素の化学気相浸透による、炭素繊維強化型炭素の製造のための本発明の好ましい実施形態を以下に記載する。
炭素の浸透は、技術上、純粋なメタンを用いて実施する。全体圧力は20kPa、温度は1,100℃であり、持続時間は0.16秒に調整する。多孔質構造体を、2mm幅の開口部から適用されるガス流に晒す。50mmより小さい幅の開口部では、米国特許第6,197,374 B1号の開示によれば、飽和吸着領域内の高圧下で、使用に適した細孔充填が生じる。25mm未満の幅の開口部を使用することにより、米国特許第6,197,374 B1号の開示による高圧下で、通常の処理によって得られる細孔充填よりも良好な、飽和吸着領域内の細孔充填が達成される。本実施形態で明らかなように、1mm〜5mmの領域内で、細孔充填及び生産速度に関して最善の結果が達成される。等圧の圧力条件を短い持続時間で促すために、開口部の幅は1mm超となるように選択する。それより狭い開口部の幅で等圧の圧カ条件を達成できる限り、開口部の幅は1mmより小さくてもよい。
本実施形態3では、以下の浸透条件を維持する。
温度(T)=1,100℃
全体圧力(Ptotal)=26kPa〜100kPa
純粋メタンを伴うガス流
持続時間(τ)=0.16秒
上記実施例1の複合材料に、本明細書で本実施例3に開示するようなCVD処理を施す。本実施例3で使用するCVD処理は、以下のような米国特許出願公開第20120328884 A1号の実施例1に記載されているように実施する。
上記実施例2から得た複合材料に、上記実施例3に記載されているようなCVD処理を施す。
Claims (11)
- 炭素/炭素複合材料物品の製造方法であって、該方法が、
(a)液体炭素前駆体組成物を提供する工程であって、該液体前駆体組成物は任意成分の添加前、硬化前、及び炭化前に、25℃で約10,000mPa−s未満の純粘度を有し、硬化される液体前駆体組成物は、任意成分の不在下での測定で少なくとも約35重量%の炭素収率を有する前記工程と、
(b)工程(a)の液体炭素前駆体組成物の注入に適合させた繊維状または多孔質の炭素材料を提供する工程と、
(c)工程(b)の繊維状または多孔質の炭素材料に、少なくとも1回、工程(a)の液体炭素前駆体組成物を注入して、液体炭素前駆体の注入済みプリフォームを形成する工程と、
(d)工程(c)の液体炭素前駆体の注入済みプリフォームを加熱して、炭素/炭素複合材料プリフォームを形成する工程と、
(e)工程(d)の炭素/炭素複合材料プリフォームの密度を増加させ、炭素/炭素複合材料物品を形成する工程と、を含む前記方法。 - 工程(e)が、化学蒸着、化学気相浸透、または化学蒸着と化学気相浸透との組み合わせによって実施される、請求項1に記載の方法。
- 工程(e)の炭素/炭素複合材料プリフォームの密度が、少なくとも約5%以上増加する、請求項1に記載の方法。
- 工程(d)が、液体炭素前駆体の注入済みプリフォームを最初に硬化し、引き続き硬化後の炭素前駆体が注入済みのプリフォームを炭化して、炭素/炭素複合材料プリフォームを形成することにより実施される、請求項1に記載の方法。
- 前記方法が溶媒を含まずに実施される、請求項1に記載の方法。
- 工程(d)が、約80℃〜約2000℃の温度で実施される、請求項1に記載の方法。
- 前記繊維状または多孔質の炭素材料が炭素繊維を含む、請求項1に記載の方法。
- 硬化性液体炭素前駆体組成物が、(A)少なくとも1種の芳香族エポキシ樹脂と、(B)(i)少なくとも1種の芳香族共反応性硬化剤、または(B)(ii)少なくとも1種の触媒硬化剤、または(B)(iii)これらの混合物との組み合わせを含む、請求項1に記載の方法。
- 前記少なくとも1種の芳香族エポキシ樹脂が、ジビニルアレーンジオキシドを含み、該ジビニルアレーンジオキシドがジビニルベンゼンジオキシドを含む、請求項8に記載の方法。
- 前記硬化性液体炭素前駆体組成物が溶媒を含まない、請求項1に記載の方法。
- 前記炭素/炭素複合材料の密度が、約1.5g/cc〜約2.0g/ccである、請求項1に記載の方法。
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KR101743073B1 (ko) | 2016-11-14 | 2017-06-02 | 국방과학연구소 | 밀도 구배를 갖는 탄소 복합재의 제조방법 및 이에 의해 제조된 탄소 복합재 |
US10689301B2 (en) | 2018-05-03 | 2020-06-23 | Doosan Fuel Cell America, Inc. | Method of making a porous fuel cell component |
US11638331B2 (en) | 2018-05-29 | 2023-04-25 | Kontak LLC | Multi-frequency controllers for inductive heating and associated systems and methods |
US11555473B2 (en) | 2018-05-29 | 2023-01-17 | Kontak LLC | Dual bladder fuel tank |
CN109410768A (zh) * | 2018-12-24 | 2019-03-01 | 武汉华星光电半导体显示技术有限公司 | 显示器盖板及其制造方法 |
US11535958B2 (en) | 2019-08-09 | 2022-12-27 | Raytheon Technologies Corporation | Fiber having integral weak interface coating, method of making and composite incorporating the fiber |
CN111058011A (zh) * | 2019-12-25 | 2020-04-24 | 浙江工业大学 | 一种纳米金刚石-石墨烯复合薄膜电极及其制备方法 |
CN110877983A (zh) * | 2019-12-26 | 2020-03-13 | 内蒙古航天红岗机械有限公司 | 一种c/c复合材料的制备方法 |
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CN112409009B (zh) * | 2020-11-09 | 2022-08-12 | 航天材料及工艺研究所 | 一种基于液相浸渍和原位转化提高热结构复合材料抗氧化性能的方法 |
CN112250277B (zh) * | 2020-12-23 | 2021-03-23 | 湖南碳谷装备制造有限公司 | 一种基于微波电解催化氧化的污泥脱水方法及系统 |
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