JPH05263363A - Carbon fiber and carbon fiber-reinforced thermoplastic resin and prepreg produced by using the fiber - Google Patents
Carbon fiber and carbon fiber-reinforced thermoplastic resin and prepreg produced by using the fiberInfo
- Publication number
- JPH05263363A JPH05263363A JP3293432A JP29343291A JPH05263363A JP H05263363 A JPH05263363 A JP H05263363A JP 3293432 A JP3293432 A JP 3293432A JP 29343291 A JP29343291 A JP 29343291A JP H05263363 A JPH05263363 A JP H05263363A
- Authority
- JP
- Japan
- Prior art keywords
- carbon fiber
- thermoplastic resin
- resin
- surface treatment
- mixture
- 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.)
- Withdrawn
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Landscapes
- Reinforced Plastic Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Chemical Treatment Of Fibers During Manufacturing Processes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、炭素繊維強化熱可塑
性樹脂（以下、ＣＦＲＴＰと略記する）の強化材として
用いられる炭素繊維に関し、炭素繊維表面にカルボジイ
ミド試薬と表面処理用熱可塑性樹脂の混合物を付着させ
ることにより、炭素繊維とマトリックスとなる熱可塑性
樹脂との接着性を高めるようにしたものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carbon fiber used as a reinforcing material for a carbon fiber reinforced thermoplastic resin (hereinafter abbreviated as CFRTP), which is a mixture of a carbodiimide reagent and a surface treatment thermoplastic resin on the surface of the carbon fiber. Is adhered to enhance the adhesiveness between the carbon fiber and the thermoplastic resin serving as the matrix.
【０００２】[0002]
【従来の技術】ＣＦＲＴＰの強化材として用いられる炭
素繊維とマトリックスとなる熱可塑性樹脂との接着性を
改善する方法としては、例えば炭素繊維表面をポリビニ
ルピロリドンで被覆するもの（特開昭５７−５６５８６
号公報参照）、炭素繊維表面をポリウレタン樹脂で被覆
するもの（特開昭５８−１２６３７５号公報参照）、炭
素繊維表面をアクリロニトリルースチレン共重合樹脂で
被覆するもの（特開昭５９−７１４７８号公報参照）、
炭素繊維表面をポリエーテルイミド樹脂でサイジングす
るもの（特開昭６２−２９９５８０号公報参照）などが
知られている。2. Description of the Related Art As a method for improving the adhesiveness between carbon fibers used as a reinforcing material for CFRTP and a thermoplastic resin serving as a matrix, for example, the surface of carbon fibers is coated with polyvinylpyrrolidone (JP-A-57-56586).
(See Japanese Patent Laid-Open No. 59-71478), those whose surface is covered with a polyurethane resin (see Japanese Patent Laid-Open No. 58-126375), and those whose surface is covered with an acrylonitrile-styrene copolymer resin (Japanese Laid-Open Patent Publication No. 59-71478). reference),
There is known one in which the surface of carbon fiber is sized with a polyetherimide resin (see JP-A-62-299580).
【０００３】しかしながら、これらの先行技術にあって
は、炭素繊維とマトリックスとなる熱可塑性樹脂との接
着性改善効果は不十分であり、マトリックスがエポキシ
樹脂などの熱硬化性樹脂を用いる炭素繊維強化プラスチ
ック（ＣＦＲＰ）に比較して機械的強度が劣り、炭素繊
維が有する優秀な機械的特性を十分に生かしきれない不
満がある。However, in these prior arts, the effect of improving the adhesion between the carbon fiber and the thermoplastic resin that serves as the matrix is insufficient, and the matrix is reinforced with carbon fiber using a thermosetting resin such as an epoxy resin. The mechanical strength is inferior to that of plastic (CFRP), and there is a complaint that the excellent mechanical properties of carbon fiber cannot be fully utilized.
【０００４】[0004]
【発明が解決しようとする課題】よって、この発明にお
ける課題は、マトリックスとなる熱可塑性樹脂との接着
性が良好な炭素繊維、換言すれば接着性を十分に高めう
る炭素繊維の表面処理剤を得ることにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a carbon fiber having a good adhesiveness with a thermoplastic resin as a matrix, in other words, a carbon fiber surface treating agent capable of sufficiently enhancing the adhesiveness. To get.
【０００５】[0005]
【課題を解決するための手段】かかる課題は、カルボジ
イミド試薬と表面処理用熱可塑性樹脂の混合物を表面処
理剤として用い、炭素繊維表面にこれを付着せしめるこ
とで解決される。This problem can be solved by using a mixture of a carbodiimide reagent and a thermoplastic resin for surface treatment as a surface treatment agent and adhering it to the surface of carbon fiber.
【０００６】以下、本発明を詳しく説明する。本発明の
炭素繊維は、その表面にカルボジイミド試薬と表面処理
用熱可塑性樹脂の混合物が付着したものである。ここで
使用されるカルボジイミド試薬とは、下記の一般式
（Ｉ）で示される構造を有する化合物で、単にカルボジ
イミドと呼称されるときもある。 Ｒ1−Ｎ＝Ｃ＝Ｎ−Ｒ2 （Ｉ） （式中、Ｒ1およびＲ2は、シクロヘキシル等の脂環族置
換基，エチル，メチル，イソプロピル等の脂肪族置換基
およびフェニル，Ｐ−トルオイル等の芳香族置換基を示
し、Ｒ1およびＲ2は同一でも異ってもよい。）このカル
ボジイミド試薬の具体的な化合物としては、ジシクロヘ
キシルカルボジイミド，ジ−Ｐ−トルオイルカルボジイ
ミド，ジイソプロピルカルボジイミド，ジフェニルカル
ボジイミドなどがある。The present invention will be described in detail below. The carbon fiber of the present invention has a mixture of a carbodiimide reagent and a thermoplastic resin for surface treatment adhered to the surface thereof. The carbodiimide reagent used here is a compound having a structure represented by the following general formula (I) and is sometimes simply referred to as carbodiimide. R 1 -N = C = N-R 2 (I) (wherein R 1 and R 2 are alicyclic substituents such as cyclohexyl, aliphatic substituents such as ethyl, methyl, isopropyl and phenyl, P- It represents an aromatic substituent such as toluoyl and R 1 and R 2 may be the same or different.) Specific examples of the carbodiimide reagent include dicyclohexylcarbodiimide, di-P-toluoylcarbodiimide, diisopropylcarbodiimide, Examples include diphenylcarbodiimide.
【０００７】そして、カルボジイミド試薬と併用される
表面処理用熱可塑性樹脂としては、特に限定されるもの
ではないが、これらの混合物によって表面処理された炭
素繊維を強化材としたＣＦＲＴＰのマトリックスとなる
樹脂と同種のものが好適に用いられる。この表面処理用
熱可塑性樹脂としては、例えば、ポリカーボネイト樹
脂，ポリアミド樹脂，ポリオキシメチレン樹脂，ポリエ
チレンテレフタレート樹脂，ボリブチレンテレフタレー
ト樹脂，ポリエーテルエーテルケトン樹脂，ポリエーテ
ルケトン樹脂，ポリフェニレンスルフィド樹脂，ポリフ
ェニレンオキサイド樹脂などを用いることができる。ま
た、本発明の炭素繊維を強化材としたＣＦＲＴＰのマト
リックスとなる熱可塑性樹脂も、特に限定されないが、
上記に挙げた熱可塑性樹脂を用いることができる。そし
て特に好ましくは、表面処理用熱可塑性樹脂およびマト
リックスとなる樹脂として、いずれもポリカーボネイト
樹脂が用いられる。The thermoplastic resin for surface treatment which is used together with the carbodiimide reagent is not particularly limited, but a resin which becomes a matrix of CFRTP using carbon fiber surface-treated with a mixture thereof as a reinforcing material. The same kind as the above is preferably used. Examples of the thermoplastic resin for surface treatment include polycarbonate resin, polyamide resin, polyoxymethylene resin, polyethylene terephthalate resin, polybutylene terephthalate resin, polyether ether ketone resin, polyether ketone resin, polyphenylene sulfide resin, polyphenylene oxide resin. Etc. can be used. Further, the thermoplastic resin which becomes the matrix of CFRTP using the carbon fiber of the present invention as a reinforcing material is also not particularly limited,
The thermoplastic resins listed above can be used. And particularly preferably, a polycarbonate resin is used as both the thermoplastic resin for surface treatment and the resin to be the matrix.
【０００８】また、本発明で使用される炭素繊維として
は、アクリロニトリル系繊維，レーヨン，ピッチなどを
原料とする高弾性率タイプおよび高強度タイプのもの
で、モノフィラメント，ストランド，ロービング，チョ
ップドストランド，チョップドストランドマット，ロー
ビングクロス，ロービング，平織りクロス，朱子織りク
ロスなどの形態のものなとが用いられる。The carbon fibers used in the present invention are of high elastic modulus type and high strength type made of acrylonitrile fiber, rayon, pitch, etc. as raw materials, and are monofilaments, strands, rovings, chopped strands, chopped Strand mats, roving cloths, rovings, plain weave cloths, satin weave cloths and the like are used.
【０００９】炭素繊維にカルボジイミド試薬と表面処理
用熱可塑性樹脂の混合物を付着させる方法としては、有
機溶媒にカルボジイミド試薬および表面処理用熱可塑性
樹脂を溶解した溶液を使用して、繊維を浸漬し、乾燥し
て溶媒を揮散、除去することにより行う方法がある。勿
論、上記溶液を炭素繊維に噴霧したり、カーテンコータ
などで塗布したりする方法も採用可能である。ここで用
いられる有機溶媒としては、カルボジイミド試薬と表面
処理用熱可塑性樹脂の混合物を変性，変質させないもの
であれば特に限定されないが、好ましいものとしては、
ジクロロメタン，トリクロロエタンなどがある。また、
上記溶液中のカルボジイミド試薬と表面処理用熱可塑性
樹脂の混合物濃度は、重量比で０．０１〜１０％、好ま
しくは０．１〜７％であると、１回の浸漬によりこの混
合物の付着を充分に行なうことができる。この範囲外で
あってもこの発明の効果は得られる。As a method for adhering a mixture of a carbodiimide reagent and a thermoplastic resin for surface treatment to carbon fibers, a solution in which a carbodiimide reagent and a thermoplastic resin for surface treatment are dissolved in an organic solvent is used to immerse the fiber, There is a method of performing drying by volatilizing and removing the solvent. Of course, a method of spraying the above solution on the carbon fiber or applying it with a curtain coater or the like can also be adopted. The organic solvent used here is not particularly limited as long as it does not modify or alter the mixture of the carbodiimide reagent and the thermoplastic resin for surface treatment, but preferable examples are:
Examples include dichloromethane and trichloroethane. Also,
When the mixture concentration of the carbodiimide reagent and the thermoplastic resin for surface treatment in the above solution is 0.01 to 10% by weight, preferably 0.1 to 7%, the adhesion of this mixture by one dipping It can be done enough. Even if it is out of this range, the effect of the present invention can be obtained.
【００１０】また、カルボジイミド試薬と表面処理用熱
可塑性樹脂の混合物の炭素繊維への乾燥後の付着量は、
カルボジイミド試薬と表面処理用熱可塑性樹脂の混合比
によって適宜変化せしめることが好ましく、カルボジイ
ミド試薬単独の付着量が重量比で０．００１〜８％、好
ましくは０．１〜７％となるように、かつ表面処理用熱
可塑性樹脂の付着量の量が重量比で０．１〜１０％とな
るように設定される。このカルボジイミド試薬の付着量
が０．００１％未満では接着性改善効果が得られず、８
％を越えると逆に接着性改善効果が低下してしまう。ま
た、炭素繊維への表面処理用熱可塑性樹脂の付着量が、
０．１％未満ではカルボジイミドの量が不足して接着性
改善効果が得られず、１０％を越えると炭素繊維に対し
て樹脂の付着量が多過ぎて、繊維としての柔軟性がなく
なり、これ自体がプリプレグ状になってしまう。また、
一般の炭素繊維のロービング、ストランドは、サイジン
グ剤（集束剤）で表面処理されて市販されているため、
このような炭素繊維を使用する場合には、予め空気中で
高温で加熱してこのサイジング剤を燃焼して除去してか
ら、カルボジイミド試薬と表面処理用熱可塑性樹脂の混
合物で処理することが好ましい。さらに、カルボジイミ
ド試薬と表面処理用熱可塑性樹脂の混合物による表面処
理に先立って、炭素繊維に表面活性化処理を施しておく
こともできる。この表面活性化処理としては、過マンガ
ン酸カリウム，硝酸による処理，電解質溶液中での電気
分解処理などの種々の処理方法が用いられる。The amount of the mixture of the carbodiimide reagent and the thermoplastic resin for surface treatment adhered to the carbon fiber after drying is:
It is preferable to appropriately change the mixture ratio of the carbodiimide reagent and the thermoplastic resin for surface treatment, so that the amount of the carbodiimide reagent alone attached is 0.001 to 8% by weight, preferably 0.1 to 7%, Moreover, the amount of the adhered amount of the thermoplastic resin for surface treatment is set to be 0.1 to 10% by weight. If the amount of the carbodiimide reagent deposited is less than 0.001%, the effect of improving the adhesiveness cannot be obtained, and
On the other hand, if it exceeds%, the effect of improving the adhesiveness decreases. In addition, the adhesion amount of the thermoplastic resin for surface treatment to the carbon fiber is
If it is less than 0.1%, the amount of carbodiimide is insufficient to obtain the effect of improving the adhesiveness, and if it exceeds 10%, the amount of resin adhered to the carbon fiber is too large and the flexibility of the fiber is lost. It becomes a prepreg itself. Also,
General carbon fiber rovings and strands are surface-treated with a sizing agent (sizing agent) and are commercially available.
When such a carbon fiber is used, it is preferable that the sizing agent is burned and removed by heating at a high temperature in air in advance and then treated with a mixture of a carbodiimide reagent and a thermoplastic resin for surface treatment. .. Further, the carbon fiber may be subjected to a surface activation treatment prior to the surface treatment with the mixture of the carbodiimide reagent and the surface treatment thermoplastic resin. As the surface activation treatment, various treatment methods such as treatment with potassium permanganate, nitric acid, and electrolysis treatment in an electrolyte solution are used.
【００１１】このようにしてカルボジイミド試薬と表面
処理用熱可塑性樹脂の混合物で表面が被覆された炭素繊
維は、強化材としてマトリックスとなる熱可塑性樹脂中
に分散され、複合化されて、この発明のＣＦＲＴＰとな
る。The carbon fiber whose surface is coated with the mixture of the carbodiimide reagent and the thermoplastic resin for surface treatment in this way is dispersed in a thermoplastic resin serving as a matrix as a reinforcing material and is compounded to obtain a composite of the present invention. It becomes CFRTP.
【００１２】これら熱可塑性樹脂と上記炭素繊維との複
合化の方法としては、従来周知の種々の方法が用いら
れ、例えばカルボジイミド試薬と表面処理用熱可塑性樹
脂の混合物で処理した炭素繊維ストランドを切断してチ
ョップドスランドとし、これをマトリックスとなる熱可
塑性樹脂ペレットと混合し、押出機で混練し、そのまま
成形品とする方法や、押出機で混練して一旦混合ペレッ
トとし、これを射出成形や押出成形して成形品とする方
法、あるいは表面処理された炭素繊維のマットやクロス
をマトリックスとなる熱可塑性樹脂のフィルム，シー
ト，織布，不織布などと交互に積層し、加熱加圧して一
体化して成形品を得る方法、表面処理された炭素繊維の
マットやクロスにマトリックスとなる熱可塑性樹脂粉末
を散布し、加熱して含浸せしめて、プリプレグとした
り、同様にこれらマットやクロスにマトリックスとなる
熱可塑性樹脂溶液あるいは溶融物を含浸してプリプレグ
としたりし、これらプリプレグを用いて成形品とする方
法などがある。As a method for compositing these thermoplastic resins with the above-mentioned carbon fibers, various conventionally known methods are used. For example, carbon fiber strands treated with a mixture of a carbodiimide reagent and a thermoplastic resin for surface treatment are cut. To form chopped sland, which is mixed with thermoplastic resin pellets that serve as a matrix and kneaded in an extruder to form a molded product as it is, or kneaded in an extruder to form mixed pellets, which are then injection molded or extruded. A method of molding into a molded product, or a surface-treated carbon fiber mat or cloth is alternately laminated with a thermoplastic resin film, sheet, woven fabric, non-woven fabric, etc. serving as a matrix, and heated and pressed to be integrated. A method for obtaining a molded article, in which a surface-treated carbon fiber mat or cloth is sprayed with a thermoplastic resin powder serving as a matrix, and heated to contain it. Allowed to, or a prepreg, similarly impregnated with a thermoplastic resin solution or melt the matrix or to the prepreg in these mats and cloths, and a method of a molded article using these prepregs.
【００１３】このようにして得られるＣＦＲＴＰ成形品
中での炭素繊維含有量は、体積比で３０〜６５％程度に
すると、成形品の強度が好適に得られるが、成形品の用
途等によっては、この範囲外であってもよい。When the carbon fiber content in the CFRTP molded product thus obtained is about 30 to 65% by volume, the strength of the molded product is suitably obtained, but depending on the use of the molded product, etc. , May be outside this range.
【００１４】以上のように、この発明の炭素繊維は、そ
の表面にカルボジイミド試薬と表面処理用熱可塑性樹脂
の混合物を付着させたものであるので、炭素繊維のマト
リックスとなる熱可塑性樹脂に対する接着性が著るしく
改善されたものとなる。よって、この炭素繊維を用いて
得られるＣＦＲＴＰは、炭素繊維が持つ高度な機械的特
性が十分に生され、高い機械的強度を有する優れた複合
材料となる。As described above, since the carbon fiber of the present invention has the mixture of the carbodiimide reagent and the surface-treating thermoplastic resin adhered to the surface thereof, it has an adhesive property to the thermoplastic resin serving as the matrix of the carbon fiber. Is markedly improved. Therefore, the CFRTP obtained by using this carbon fiber becomes an excellent composite material having high mechanical strength because the high mechanical properties of the carbon fiber are sufficiently produced.
【００１５】[0015]
【実施例】以下、実施例を示して、この発明の作用効果
を明確にする。 １．炭素繊維の表面処理 炭素繊維として、「トレカクロスＣ０６３４３」（東レ
（株）製、平織りクロス，坪量１９８ｇ／ｍ2）を用意
し、これを４００℃の電気炉中で２５分間加熱処理し、
サイジング剤を焼いて除去した。一方、ジシクロヘキシ
ルカルボジイミドおよびポリカーボネート樹脂を溶媒の
ジクロロメタンに溶解して、カルボジイミド試薬と表面
処理用熱可塑性樹脂の混合物溶液を調製した（ジシクロ
ヘキシルカルボジイミド２．４重量％、ポリカーボネー
ト樹脂１．２重量％）。この混合物溶液中に、上記加熱
処理済炭素繊維クロスを、室温で１０分間浸漬し、つい
で４０〜５０℃で約５分間乾燥し、ジクロロメタンを揮
散させた。EXAMPLES Examples will be shown below to clarify the effects of the present invention. 1. Surface treatment of carbon fiber As a carbon fiber, "Torayca cloth C06343" (manufactured by Toray Industries, Inc., plain weave cloth, basis weight 198 g / m 2 ) was prepared, and this was heat-treated in an electric furnace at 400 ° C for 25 minutes,
The sizing agent was baked and removed. On the other hand, dicyclohexylcarbodiimide and a polycarbonate resin were dissolved in dichloromethane as a solvent to prepare a mixed solution of a carbodiimide reagent and a thermoplastic resin for surface treatment (2.4% by weight of dicyclohexylcarbodiimide, 1.2% by weight of a polycarbonate resin). The heat-treated carbon fiber cloth was immersed in this mixture solution at room temperature for 10 minutes and then dried at 40 to 50 ° C. for about 5 minutes to volatilize dichloromethane.
【００１６】２．ＣＦＲＴＰの成形 マトリックスとなる熱可塑性樹脂として、ポリカーボネ
ート繊維を織ったクロス（帝人（株）製、坪量１００ｇ
／ｍ2、）を用意した。このポリカーボネート繊維クロ
スと上記混合物試薬で処理した炭素繊維クロスとをそれ
ぞれ複数枚交互に積層し、プレス機にて加熱加圧して、
板状のＣＦＲＴＰ成形品とした。炭素繊維クロスは、交
互にその繊維方向を直交させて積層し、０°方向及び９
０°方向強化品とし、成形品中の炭素繊維含量（Ｖｆ）
は５０体積％とした。また、加熱加圧条件は、温度２５
０℃、圧力１５ｋｇｆ／ｃｍ2、時間１０分とした。2. Molding of CFRTP As a thermoplastic resin serving as a matrix, a cloth woven of polycarbonate fibers (manufactured by Teijin Ltd., basis weight: 100 g)
/ M 2 ,) was prepared. The polycarbonate fiber cloth and the carbon fiber cloth treated with the mixture reagent are alternately laminated on a plurality of sheets, and heated and pressed by a press machine,
It was a plate-shaped CFRTP molded product. The carbon fiber cloths are alternately laminated with their fiber directions orthogonal to each other,
Carbon fiber content (Vf) in the molded product as a 0 ° reinforced product
Was 50% by volume. In addition, the heating and pressurizing condition is a temperature of 25.
The temperature was 0 ° C., the pressure was 15 kgf / cm 2 , and the time was 10 minutes.
【００１７】３．物性評価 上述のようにして得られた板状のＣＦＲＴＰ成形品の物
性評価を三点曲げ試験によって行った。試験片は幅２
５．４ｍｍ、長さ６０ｍｍ、厚さ２ｍｍであり、支点間
距離を４０ｍｍ、荷重支点の曲率半径を３ｍｍ、試験速
度を１ｍｍ／分、サンプル数を１０個以上とした。曲げ
試験の結果、得られたＣＦＲＴＰの曲げ強度は６３．６
ｋｇ／ｍｍ2であった。3. Evaluation of Physical Properties Physical properties of the plate-shaped CFRTP molded product obtained as described above were evaluated by a three-point bending test. Width of test piece is 2
The length was 5.4 mm, the length was 60 mm, and the thickness was 2 mm. The distance between fulcrums was 40 mm, the radius of curvature of the load fulcrum was 3 mm, the test speed was 1 mm / min, and the number of samples was 10 or more. As a result of the bending test, the bending strength of the obtained CFRTP is 63.6.
It was kg / mm 2 .
【００１８】また、比較として、同様に加熱処理した炭
素繊維クロスに、上記混合物溶液に代えてポリカーボネ
ート樹脂溶液（５．０重量％）を含浸し、加熱，乾燥し
て、表面処理した炭素繊維クロスを用いて、同様の板状
のＣＦＲＴＰ成形品を製造したところ、このものの曲げ
強度は５４．１ｋｇ／ｍｍ2であった。また、比較とし
て同様に加熱処理してサイジング剤を除去した炭素繊維
クロスをそのまま用い、これとマトリックスとなるポリ
カーボネート繊維クロスとを用いて、同様の板状のＣＦ
ＲＴＰ成形品を製造したところ、このものの曲げ強度は
５０．２ｋｇ／ｍｍ2であった。これらの結果から、ジ
シクロヘキシルカルボジイミドおよびポリカーボネート
の混合物を付着させたＣＦＲＴＰを用いた成形品では、
曲げ強度が高く、炭素繊維とマトリックスのポリカーボ
ネート樹脂との接着性が向上していることが認められ
た。For comparison, a carbon fiber cloth which has been similarly heat treated is impregnated with a polycarbonate resin solution (5.0% by weight) instead of the above mixture solution, heated and dried, and then surface treated. When a similar plate-shaped CFRTP molded product was produced by using, the bending strength of this product was 54.1 kg / mm 2 . For comparison, the same plate-like CF is prepared by using the same carbon fiber cloth that has been subjected to the same heat treatment to remove the sizing agent as it is, and using this polycarbonate fiber cloth as a matrix.
When an RTP molded product was produced, the bending strength of this product was 50.2 kg / mm 2 . From these results, in a molded article using CFRTP to which a mixture of dicyclohexylcarbodiimide and polycarbonate is attached,
It was confirmed that the bending strength was high and the adhesiveness between the carbon fiber and the polycarbonate resin of the matrix was improved.
【００１９】[0019]
【発明の効果】以上説明したように、この発明の炭素繊
維は、その表面にカルボジイミド試薬と表面処理用熱可
塑性樹脂の混合物を付着させたものであるので、マトリ
ックスとなる熱可塑性樹脂に対する接着性が大きく改善
される。このため、この炭素繊維を強化材としたＣＦＲ
ＴＰは、炭素繊維本来の優れた機械的特性を十二分に生
したものとなり、高い機械的強度などを持つものとな
る。As described above, the carbon fiber of the present invention has a mixture of a carbodiimide reagent and a thermoplastic resin for surface treatment adhered to the surface thereof, and therefore has an adhesive property with respect to the thermoplastic resin serving as a matrix. Is greatly improved. For this reason, CFR using this carbon fiber as a reinforcing material
TP has more than sufficient original mechanical properties of carbon fiber, and has high mechanical strength.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０８Ｋ 9/04 ＫＣＰ 7242−4Ｊ Ｄ０１Ｆ 11/14 // Ｄ０６Ｍ 101:40 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location C08K 9/04 KCP 7242-4J D01F 11/14 // D06M 101: 40
Claims (3)
性樹脂の混合物が表面に付着した炭素繊維。1. A carbon fiber on which a mixture of a carbodiimide reagent and a thermoplastic resin for surface treatment is attached.
性樹脂の混合物が表面に付着した炭素繊維を強化材とし
た炭素繊維強化熱可塑性樹脂。2. A carbon fiber reinforced thermoplastic resin comprising a carbon fiber having a mixture of a carbodiimide reagent and a thermoplastic resin for surface treatment attached to the surface as a reinforcing material.
性樹脂の混合物が表面に付着した炭素繊維にマトリック
スとなる熱可塑性樹脂を含浸させたプリプレグ。3. A prepreg obtained by impregnating a carbon fiber, on the surface of which a mixture of a carbodiimide reagent and a thermoplastic resin for surface treatment is adhered, with a thermoplastic resin serving as a matrix.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3293432A JPH05263363A (en) | 1991-11-08 | 1991-11-08 | Carbon fiber and carbon fiber-reinforced thermoplastic resin and prepreg produced by using the fiber |
| EP92117306A EP0537644A1 (en) | 1991-10-11 | 1992-10-09 | Carbon fiber, thermoplastic resin, carbon fiber reinforced thermoplastic resin thereof and prepreg therefor |
| US07/959,773 US5318847A (en) | 1991-10-11 | 1992-10-13 | Carbodiimide treated carbon fiber and use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3293432A JPH05263363A (en) | 1991-11-08 | 1991-11-08 | Carbon fiber and carbon fiber-reinforced thermoplastic resin and prepreg produced by using the fiber |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3292541A Division JPH05106163A (en) | 1991-10-11 | 1991-10-11 | Carbon fiber and carbon fiber-reinforced thermoplastic resin and prepreg produced by using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05263363A true JPH05263363A (en) | 1993-10-12 |
Family
ID=17794685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3293432A Withdrawn JPH05263363A (en) | 1991-10-11 | 1991-11-08 | Carbon fiber and carbon fiber-reinforced thermoplastic resin and prepreg produced by using the fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05263363A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998020076A1 (en) * | 1996-11-06 | 1998-05-14 | Toray Industries, Inc. | Molding material and process for preparing the same |
| WO2018216518A1 (en) * | 2017-05-24 | 2018-11-29 | 三菱瓦斯化学株式会社 | Sheet formed from carbon fiber reinforced thermoplastic resin, and production method of said sheet |
| WO2018216517A1 (en) * | 2017-05-24 | 2018-11-29 | 三菱瓦斯化学株式会社 | Sheet formed from carbon fiber reinforced thermoplastic resin, and production method of said sheet |
| WO2019049581A1 (en) * | 2017-09-08 | 2019-03-14 | 松本油脂製薬株式会社 | Sizing agent for reinforcing fibers, and use thereof |
| JP2019155634A (en) * | 2018-03-08 | 2019-09-19 | 三菱重工業株式会社 | Method for producing composite intermediate material |
| WO2024135676A1 (en) * | 2022-12-21 | 2024-06-27 | 東レ株式会社 | Fiber-reinforced resin substrate and method for producing fiber-reinforced resin substrate |
-
1991
- 1991-11-08 JP JP3293432A patent/JPH05263363A/en not_active Withdrawn
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998020076A1 (en) * | 1996-11-06 | 1998-05-14 | Toray Industries, Inc. | Molding material and process for preparing the same |
| WO2018216518A1 (en) * | 2017-05-24 | 2018-11-29 | 三菱瓦斯化学株式会社 | Sheet formed from carbon fiber reinforced thermoplastic resin, and production method of said sheet |
| WO2018216517A1 (en) * | 2017-05-24 | 2018-11-29 | 三菱瓦斯化学株式会社 | Sheet formed from carbon fiber reinforced thermoplastic resin, and production method of said sheet |
| JPWO2018216518A1 (en) * | 2017-05-24 | 2020-03-26 | 三菱瓦斯化学株式会社 | Sheet made of carbon fiber reinforced thermoplastic resin and method for producing the sheet |
| JPWO2018216517A1 (en) * | 2017-05-24 | 2020-05-07 | 三菱瓦斯化学株式会社 | Sheet made of carbon fiber reinforced thermoplastic resin and method for producing the sheet |
| US11466132B2 (en) | 2017-05-24 | 2022-10-11 | Mitsubishi Gas Chemical Company, Inc. | Sheet formed from carbon fiber reinforced thermoplastic resin, and production method of said sheet |
| US11498310B2 (en) | 2017-05-24 | 2022-11-15 | Mitsubishi Gas Chemical Company, Inc. | Sheet formed from carbon fiber reinforced thermoplastic resin, and production method of said sheet |
| WO2019049581A1 (en) * | 2017-09-08 | 2019-03-14 | 松本油脂製薬株式会社 | Sizing agent for reinforcing fibers, and use thereof |
| JPWO2019049581A1 (en) * | 2017-09-08 | 2020-02-27 | 松本油脂製薬株式会社 | Sizing agent for reinforcing fibers and use thereof |
| US11518857B2 (en) | 2017-09-08 | 2022-12-06 | Matsumoto Yushi-Seiyaku Co., Ltd. | Sizing agent for reinforcement fiber and applications thereof |
| JP2019155634A (en) * | 2018-03-08 | 2019-09-19 | 三菱重工業株式会社 | Method for producing composite intermediate material |
| WO2024135676A1 (en) * | 2022-12-21 | 2024-06-27 | 東レ株式会社 | Fiber-reinforced resin substrate and method for producing fiber-reinforced resin substrate |
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