JPH02120379A - Joining of carbon fiber/carbon composite members - Google Patents

Joining of carbon fiber/carbon composite members

Info

Publication number
JPH02120379A
JPH02120379A JP63270972A JP27097288A JPH02120379A JP H02120379 A JPH02120379 A JP H02120379A JP 63270972 A JP63270972 A JP 63270972A JP 27097288 A JP27097288 A JP 27097288A JP H02120379 A JPH02120379 A JP H02120379A
Authority
JP
Japan
Prior art keywords
members
carbon
composite
carbon fiber
prepreg
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.)
Granted
Application number
JP63270972A
Other languages
Japanese (ja)
Other versions
JP2648349B2 (en
Inventor
Hitoshi Hanawa
塙　仁志
Takashi Nakajima
隆 中島
Shigeru Kaito
海東　滋
Atsushi Kitamura
厚 北村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HANAWA NETSUDEN KINZOKU KK
Toray Industries Inc
Original Assignee
HANAWA NETSUDEN KINZOKU KK
Toray Industries Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HANAWA NETSUDEN KINZOKU KK, Toray Industries Inc filed Critical HANAWA NETSUDEN KINZOKU KK
Priority to JP63270972A priority Critical patent/JP2648349B2/en
Publication of JPH02120379A publication Critical patent/JPH02120379A/en
Application granted granted Critical
Publication of JP2648349B2 publication Critical patent/JP2648349B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/3436—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising independent continuous fibre-reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/721—Fibre-reinforced materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7212—Fibre-reinforced materials characterised by the composition of the fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3484—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being non-metallic
    • B29C65/3492—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being non-metallic being carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7214—Fibre-reinforced materials characterised by the length of the fibres
    • B29C66/72141—Fibres of continuous length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7214—Fibre-reinforced materials characterised by the length of the fibres
    • B29C66/72143—Fibres of discontinuous lengths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7394—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoset
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2061/00—Use of condensation polymers of aldehydes or ketones or derivatives thereof, as moulding material
    • B29K2061/04—Phenoplasts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/20—Inserts
    • B29K2105/206—Meshes, lattices or nets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2307/00—Use of elements other than metals as reinforcement

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Ceramic Products (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

PURPOSE:To enable the title members to be joined firmly by putting a prepreg made of carbon fibers and a carbonizable substance in the joint area between two carbon fiber/carbon composite members, pressing and heating it to join the members together, and baking in a non-oxidizing atmosphere. CONSTITUTION:A prepreg made of carbon fibers and a carbonizable substance (e.g., B-stage phenolic resin) is put in a joint area between a pair of members comprising either a carbon fiber/carbon composite or a material that will form a carbon fiber/carbon composite when baked, which is heated while the prepreg is pressed by the pair of members to join the members together and which is then baked in a non-oxidizing atmosphere. This technique enables carbon fiber/carbon composite members to be joined together very firmly to give a heat-resistant, corrosion-resistant, conductive joint; therefore, it can be utilized in assembling a heat generating device of a complicated shape and a heat generating device used in a corrosive atmosphere, wherein a carbon fiber/carbon composite is employed as heating element.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、炭素繊維／炭素コンポジット（以下、Ｃ／Ｃ
コンボシフ）という）の部材間を強固に接合する方法に
関する。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to carbon fiber/carbon composite (hereinafter referred to as C/C
This method relates to a method for firmly joining members of a combust material (combo shift).

（従来の技術） 炭素（または黒鉛）をマトリクスとし、炭素繊維（また
は黒鉛繊維）を強化材とするＣ／Ｃコンポジントは、そ
の機械的強度が著しく高いので、各種の構造部材として
利用されているとともに、導電性を有することから抵抗
発熱体の材料としてもｔｔ目を集めている。(Prior art) C/C composites, which have carbon (or graphite) as a matrix and carbon fiber (or graphite fiber) as reinforcement, have extremely high mechanical strength and are used as various structural members. In addition, due to its electrical conductivity, it is also attracting attention as a material for resistance heating elements.

Ｃ／Ｃコンポジットをこれら用途に使う場合、Ｃ／Ｃコ
ンポジット製の個々の部材を互いに接合して、目的形状
に組立てるということが行なわれている。When C/C composites are used in these applications, individual members made of C/C composites are joined together and assembled into a desired shape.

組立体が常温下で使用される場合には、Ｃ／Ｃコンポジ
ット部材間を接着強度の大きい各種合成樹脂の接着剤を
用いて接合するだけでも充分である。If the assembly is to be used at room temperature, it is sufficient to bond the C/C composite members together using various synthetic resin adhesives with high adhesive strength.

しかし、組立体が、使用時に高温になる、たとえば発熱
装置の場合には、各部材間の接合部は高温に曝されしか
も導電性でなければならないということから、上記した
ような合成樹脂系の接着剤による接合では不都合である
。However, when the assembly becomes hot during use, for example in the case of a heat generating device, the joints between each member are exposed to high temperatures and must be conductive, so synthetic resin-based materials such as those mentioned above are used. Bonding with adhesive is inconvenient.

このような場合の接合においては、接着剤として、炭素
（または黒鉛）粉末とエポキシ樹脂のような合成樹脂を
所定の割合で混合して成る液状またはペースト状の接着
剤を選定し、この接着剤をＣ／Ｃコンポジット部材の接
合部に塗布して両部材を圧着し、その状態を保ちつつ焼
成して前記合成樹脂を炭化するという方法が採られてい
る。For bonding in such cases, a liquid or paste adhesive made by mixing carbon (or graphite) powder and a synthetic resin such as epoxy resin in a predetermined ratio is selected as the adhesive. A method has been adopted in which the synthetic resin is applied to the joint portion of the C/C composite member, the two members are pressed together, and then fired while maintaining this state to carbonize the synthetic resin.

（発明が解決しようとする課題） 上記従来方法によれば、接合部は、全体が炭化している
ので耐熱性、導電性を具備している。しかも耐食性も良
好である。しかし最大の欠点は接合部の機械的強度が著
しく小さく、この箇所からの折損事故が多発するという
ことである。(Problems to be Solved by the Invention) According to the above-mentioned conventional method, the joint portion has heat resistance and conductivity because the entire joint is carbonized. Moreover, it has good corrosion resistance. However, the biggest drawback is that the mechanical strength of the joint is extremely low, and breakage accidents occur frequently at this point.

このため、たとえば、さらにＣ／Ｃコンポジット部材間
をボルトとナツトで緊締して接合部の機械的強度を保持
する処置が施されている。しかしながら、このような処
置を施さな（でも、充分な機械的強度が保持される接合
状態にあることが好ましいことはいうまでもない。For this reason, for example, measures are taken to maintain the mechanical strength of the joint by further tightening the C/C composite members with bolts and nuts. However, it goes without saying that it is preferable to maintain a bonded state in which sufficient mechanical strength is maintained without such treatment.

本発明は、機械的強度が著しく高いばかりか、耐熱性、
導電性、耐食性をも有する接合部を形成することができ
る、Ｃ／Ｃコンポジット部材の接合方法の提供を目的と
する。The present invention not only has extremely high mechanical strength, but also has high heat resistance and
The object of the present invention is to provide a method for joining C/C composite members that can form a joint having electrical conductivity and corrosion resistance.

（課題を解決するための手段） 上記目的を達成するために、本発明においては、炭素繊
維／炭素コンポジット部材、または、焼成すると炭素繊
維／炭素コンボジントになる一対の部材間の接合面に、
炭素繊維と炭化可能物質とから成るプリプレグを介在さ
せ、前記一対の部材で前記プリプレグを加圧しながら加
熱してそれら一対の部材を接合した後、非酸化性雰囲気
中にて焼成することを特徴とする炭素繊維／炭素コンポ
ジット部材の接合方法が提供される。(Means for Solving the Problems) In order to achieve the above object, in the present invention, a bonding surface between a carbon fiber/carbon composite member or a pair of members that becomes a carbon fiber/carbon composite when fired, is provided.
A prepreg made of carbon fibers and a carbonizable substance is interposed, the prepreg is heated while being pressed by the pair of members, and the pair of members are bonded, and then fired in a non-oxidizing atmosphere. A method for joining carbon fiber/carbon composite members is provided.

（作用） 前記プリプレグは、その両面に位置するＣ／Ｃコンポジ
ット部材に対する接着剤として作用すると同時に、焼成
されて自らもＣ／Ｃコンポジットとなり、Ｃ／Ｃコンポ
ジット部材間を強固に接合するようになる。(Function) The prepreg acts as an adhesive for the C/C composite members located on both sides of the prepreg, and at the same time, it also becomes a C/C composite when fired, thereby firmly joining the C/C composite members. .

（実施態様） 本発明方法においては、まず一対のＣ／Ｃコンポジット
部材間の接合すべき個所に　前記プリプレグが介在せし
められる。(Embodiment) In the method of the present invention, first, the prepreg is interposed at the location where a pair of C/C composite members are to be joined.

プリプレグは、炭素繊維と炭化可能物質とから形成され
る。Prepreg is formed from carbon fibers and carbonizable materials.

このときに用いる炭素繊維の形態に関しては次のような
ものがあげられる。Regarding the form of carbon fiber used at this time, the following can be mentioned.

第１にｗｉ物である。織物は平織物、綾礒物、朱子織物
のいずれであってもよい。First, it is a Wi-Fi item. The woven fabric may be a plain woven fabric, a twilled woven fabric, or a satin woven fabric.

また、特開昭５１−５８５６８号公報、特開昭５９−３
２２９１号公報にそれぞれ開示されている円形織物ない
し螺旋状円形織物を使用することができる。Also, JP-A-51-58568, JP-A-59-3
A circular fabric or a spiral circular fabric respectively disclosed in Japanese Patent No. 2291 can be used.

第２に解繊マットである。これは、１本１本の炭素短繊
維がランダム配向しているものである。The second is a defibrated mat. In this case, each short carbon fiber is randomly oriented.

第３はチョンブドストランドマットである。これは、炭
素繊維の東を所定の長さに裁断し、各裁断束をランダム
配向セしめて成るマットである。The third is Chonbudo Strand Mat. This is a mat made by cutting carbon fibers into predetermined lengths and setting each cut bundle in random orientation.

第４は、スワールマントである。これは、短繊維ではな
く、解繊され、または解繊されていない連続繊維（若し
くは連続繊維束）がランダム配向されているものである
。The fourth is the swirl cloak. This is not short fibers, but randomly oriented continuous fibers (or continuous fiber bundles) that may or may not be defibrated.

第５図は筒状編組である。これはその径方向および長手
方向への伸縮性に冨む。これは平らに押しつふして使用
することができる。FIG. 5 shows a tubular braid. This is due to its radial and longitudinal extensibility. This can be pressed flat and used.

第６は、一方向に互いに並行に、かつテープ状またはソ
ート状に引き揃えた、連続繊維の一方向引揃え体である
。これには、通常、引揃え状態を維持するために、Ｂス
テージの、フェノール樹脂等の熱硬化性樹脂や、ピッチ
などが含浸されている。一方向性プリプレグと呼ばれる
ものである。The sixth type is a unidirectionally aligned body of continuous fibers that are aligned parallel to each other in one direction in a tape-like or sorted form. This is usually impregnated with a B-stage thermosetting resin such as phenolic resin, pitch, etc. to maintain the aligned state. This is called unidirectional prepreg.

第７の形態は、アスペクト比の小さい短繊維である。The seventh form is short fibers with a small aspect ratio.

また、炭化可能物質としては、Ｂステージのフェノール
樹脂、フラン樹脂のような熱硬化性樹脂であることが好
ましいが、石油重質油や、ピンチ、アントラセン等を使
用することもできる。The carbonizable substance is preferably a thermosetting resin such as B-stage phenol resin or furan resin, but heavy petroleum oil, pinch, anthracene, etc. can also be used.

このプリプレグは、所定枚数を一対のＣ／Ｃコンポジッ
ト部材の間に介在せしめればよい。A predetermined number of prepregs may be interposed between a pair of C/C composite members.

ついで、一対の部（オでプリプレグを加圧しながら加熱
する。すると、プリプレグの炭化可能物質が固化し、部
材同士が接合される。炭化可能物質が熱硬化性樹脂であ
る場合には、その樹脂が硬化するわけである、プリプレ
グの成型である。このときの加圧力は５〜３０ｋｇ／ｄ
程度、温度は１００〜２００°Ｃ程度である。Next, the prepreg is heated while being pressurized in a pair of parts (O). Then, the carbonizable material of the prepreg solidifies and the members are joined together. If the carbonizable material is a thermosetting resin, the resin This is the molding of prepreg in which the material is cured.The pressing force at this time is 5 to 30 kg/d.
The degree and temperature are about 100 to 200°C.

なお、プリプレグの成型体における、炭素繊維の体積含
有率＜ｖｒ：％）を、炭素繊維と炭化可能物質との成型
体を焼成して接合すべきＣ／Ｃコンポジット部材を得る
ときのその焼成前におけるＶｆと同じにし、また後述の
焼成温度を前記Ｃ／Ｃコンポジット部材の焼成温度と同
一にすると、形成された接合部の抵抗率を前記Ｃ／Ｃコ
ンポジット部材の抵抗率と同じ値にすることができる。In addition, the volume content of carbon fiber <vr: %) in the prepreg molded body is determined before firing when the molded body of carbon fibers and carbonizable material is fired to obtain a C/C composite member to be joined. If Vf is the same as that of the C/C composite member, and the firing temperature described below is the same as the firing temperature of the C/C composite member, the resistivity of the formed joint will be the same as the resistivity of the C/C composite member. Can be done.

これは、Ｃ／Ｃコンポジット部材を発熱体とする発熱装
置を組み立てるような場合には大変好都合である。This is very convenient when assembling a heat generating device using a C/C composite member as a heat generating element.

ついで、成型体で接合された一対のＣ／Ｃコンポジット
部材を非酸化性雰囲気中で焼成する。すると、成型体が
Ｃ／Ｃコンポジットとなり、一対のＣ／Ｃコンポジット
部材がＣ／Ｃコンポジットで接合される。Next, the pair of C/C composite members joined by the molded body is fired in a non-oxidizing atmosphere. Then, the molded body becomes a C/C composite, and the pair of C/C composite members are joined by the C/C composite.

非酸化性雰囲気としては窒素雰囲気が好適である。さら
に、焼成温度は、通常、６００〜３０００′Ｃの範囲に
あればよい。なお、このとき、接合すべきＣ／Ｃコンポ
ジット部材を製造する際に採用した焼成温度と同じ焼成
温度で焼成すると、Ｃ／Ｃコンポジット部材と接合部と
の熱膨張係数が略同−となるため、両者間の接合界面に
おける剥離現象を防止することができて好適である。ま
た、焼成時に一対のＣ／Ｃコンポジット部材で成型体に
圧力をかけておくと、接合強度が一層向上する。A nitrogen atmosphere is suitable as the non-oxidizing atmosphere. Further, the firing temperature is generally in the range of 600 to 3000'C. In addition, at this time, if the C/C composite member to be joined is fired at the same firing temperature as that used when manufacturing the C/C composite member, the coefficient of thermal expansion of the C/C composite member and the joint part will be approximately the same. , it is possible to prevent a peeling phenomenon at the bonding interface between the two, which is preferable. Further, if pressure is applied to the molded body by a pair of C/C composite members during firing, the bonding strength is further improved.

なお、焼成後、焼成体に炭化可能物質を含浸し、再び焼
成するという操作を繰り返すと、高密度化が図れるので
好ましい。Note that, after firing, it is preferable to repeat the operation of impregnating the fired body with a carbonizable substance and firing it again, since higher density can be achieved.

以上においては、接合される一対の部材がＣ／Ｃコンポ
ジットからなるものである場合について説明したが、部
材は、上述した焼成時にＣ／Ｃコンポジットになる、た
とえば炭素繊維強化プラスチックスのようなものであっ
てもよい。そのような部材を使用した場合でも、結果的
にＣ／Ｃコンポジット部材同士を接合することになる。In the above, a case has been described in which the pair of members to be joined are made of a C/C composite. However, the members may be made of materials such as carbon fiber reinforced plastics, which become a C/C composite upon firing as described above. It may be. Even when such a member is used, the C/C composite members are eventually joined together.

すなわち、部材は、焼成するとＣ／Ｃコンポジットにな
るものであってもよい。That is, the member may become a C/C composite when fired.

（実施例） 東しく株）製炭素繊維“トレカ”の平ｖａ物Ｃ０６３４
３（厚み：　０．２７闘、目付：２００ｇ／ｎ（）に、
メタノールで希釈したフェノール樹脂を含浸せしめ、プ
リプレグを得た。(Example) Plain carbon fiber "trading card" C0634 manufactured by Toshiku Co., Ltd.
3 (thickness: 0.27 mm, weight: 200 g/n (),
A prepreg was obtained by impregnating it with a phenol resin diluted with methanol.

このプリプレグを、２０枚、積層したのち、１５０°Ｃ
の温度下に３０ｋｇ／ｃｄの圧力を加えてフェノール樹
脂を硬化し、成型した後、窒素ガス雰囲気中において、
昇温速度１００°Ｃ／ｈｒで２０００°Ｃにまで昇温し
、その温度で１時間保持して、長さｌｏｏｍ、幅Ｌｏｏ
ｍ、厚み３ｍのＣ／Ｃコンポジット板を得た。After laminating 20 sheets of this prepreg, it was heated to 150°C.
After curing and molding the phenolic resin by applying a pressure of 30 kg/cd at a temperature of , in a nitrogen gas atmosphere,
The temperature was raised to 2000°C at a heating rate of 100°C/hr, held at that temperature for 1 hour, and the length Loom and width Loom were measured.
A C/C composite plate with a thickness of 3 m and a thickness of 3 m was obtained.

このＣ／Ｃコンポジット板から、長さ１００−１幅２５
ｍ’：厚み３閤の仮を２枚用意し、その１枚の端部から
！２．５ｓ＋ｍにかけて、上記したプリプレグを３枚重
ね、その上に他のＣ／Ｃコンポジ、ト根の端部を重ね合
せた。From this C/C composite board, length 100-1 width 25
m': Prepare two pieces of temporary paper with a thickness of 3 yen, and start from the edge of one of them! For 2.5 s+m, three sheets of the prepreg described above were stacked, and on top of that, another C/C composite and the end of the toe were superimposed.

この重ね合せ体を、上記のＣ／Ｃコンポジット板の成型
条件と同一条件で加熱・力■圧して仮同士を接合した後
、窒素ガス雰囲気炉中で２０００″Ｃで焼成した。This stacked body was temporarily joined together by heating and pressing under the same conditions as the above-mentioned molding conditions of the C/C composite plate, and then fired at 2000''C in a nitrogen gas atmosphere furnace.

２枚のＣ／Ｃコンボ２７１反が接合された。このときの
接合部の引張剪断強度（ｋｇ／ｃｄ）をＪＩＳＫ−６８
５０で規定する方法によって測定した。Two C/C combo 271 sheets were joined. The tensile shear strength (kg/cd) of the joint at this time is JISK-68
It was measured by the method specified in 50.

その結果を表に示した。The results are shown in the table.

比較のために、２枚のＣ／Ｃコンポジット板を、大日本
インキ（株）製の接着剤゛Ｇ　Ｃ−ＨＰ”ユニオン・カ
ーバイド・コーポレーション社製のカーボンセメント“
Ｃ−３４°°で接着（接着剤層の厚み：０．５ｍｍ）し
たことを除いては、実施例と同様にして２枚の仮を接合
した。それぞれの場合の引張剪断強度を比較例１．比較
例２として表に示した。For comparison, two C/C composite plates were coated with adhesive ``G C-HP'' manufactured by Dainippon Ink Co., Ltd. and carbon cement manufactured by Union Carbide Corporation.
Two temporary sheets were joined in the same manner as in the example except that they were adhered at C-34° (adhesive layer thickness: 0.5 mm). The tensile shear strength in each case was compared to Comparative Example 1. This is shown in the table as Comparative Example 2.

表 ついで、これら３枚の接合体を接合部で板面垂直方向に
切断し、それぞれの切断面を目視観察した。Next, these three bonded bodies were cut in the direction perpendicular to the plate surface at the joint, and each cut surface was visually observed.

実施例方法で得られたものの場合は、各接合界面は−様
に密着していてボイド等は認められなかった。しかし、
比較例方法によるものの場合は、互いの接合界面に多数
のボイドが認められ−様な接合状態ではなかった。In the case of the material obtained by the method of the example, each bonding interface was in close contact with each other, and no voids were observed. but,
In the case of the comparative method, many voids were observed at the mutual bonding interface, and the bonded state was not like that.

（発明の効果） 以上の説明で明らかなように、本発明方法によれば、Ｃ
／Ｃコンポジット部材の相互間を極めて強固に接合する
ことができ、しかも、その接合部は耐熱性、耐食性、４
電性を有するので、この方法は、Ｃ／Ｃコンボジントを
発熱体とした複雑形状の発熱装置、腐食雰囲気中で使用
する発熱装置の組立て時に適用して極めて有用である。(Effect of the invention) As is clear from the above explanation, according to the method of the present invention, C
/C Composite members can be joined extremely firmly, and the joint has heat resistance, corrosion resistance, and
Since it is electrically conductive, this method is extremely useful when applied to the assembly of complex-shaped heat generating devices using the C/C composite as a heating element, and heat generating devices used in corrosive atmospheres.

出願人　　ハナワ熱電金属株式会社 出願人　　東　し　株　式　会　社 代理人　　弁理士　　長　門　侃　ニApplicant: Hanawa Thermoelectric Metal Co., Ltd. Applicant Higashi Shikaisha Ltd. Agent Patent Attorney Kanji Nagado

Claims (1)

【特許請求の範囲】[Claims] 炭素繊維／炭素コンポジット部材、または、焼成すると
炭素繊維／炭素コンポジットになる一対の部材間の接合
面に、炭素繊維と炭化可能物質とから成るプリプレグを
介在させ、前記一対の部材で前記プリプレグを加圧しな
がら加熱してそれら一対の部材を接合した後、非酸化性
雰囲気中にて焼成することを特徴とする炭素繊維／炭素
コンポジット部材の接合方法。A prepreg made of carbon fibers and a carbonizable substance is interposed between a carbon fiber/carbon composite member or a bonding surface between a pair of members that becomes a carbon fiber/carbon composite when fired, and the prepreg is processed by the pair of members. A method for joining carbon fiber/carbon composite members, which comprises joining a pair of members by heating while pressing, and then firing in a non-oxidizing atmosphere.
JP63270972A 1988-10-28 1988-10-28 Bonding method of carbon fiber / carbon composite member Expired - Fee Related JP2648349B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63270972A JP2648349B2 (en) 1988-10-28 1988-10-28 Bonding method of carbon fiber / carbon composite member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63270972A JP2648349B2 (en) 1988-10-28 1988-10-28 Bonding method of carbon fiber / carbon composite member

Publications (2)

Publication Number Publication Date
JPH02120379A true JPH02120379A (en) 1990-05-08
JP2648349B2 JP2648349B2 (en) 1997-08-27

Family

ID=17493597

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63270972A Expired - Fee Related JP2648349B2 (en) 1988-10-28 1988-10-28 Bonding method of carbon fiber / carbon composite member

Country Status (1)

Country Link
JP (1) JP2648349B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08508235A (en) * 1993-04-30 1996-09-03 フォスター ミラー インコーポレーテッド Reinforcement joint for composite structure and joining method of composite parts
US10130338B2 (en) 2012-07-10 2018-11-20 Fujifilm Sonosite, Inc. Ultrasound probe and aligned needle guide system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08508235A (en) * 1993-04-30 1996-09-03 フォスター ミラー インコーポレーテッド Reinforcement joint for composite structure and joining method of composite parts
US10130338B2 (en) 2012-07-10 2018-11-20 Fujifilm Sonosite, Inc. Ultrasound probe and aligned needle guide system

Also Published As

Publication number Publication date
JP2648349B2 (en) 1997-08-27

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