JPH04163333A - Composite carbon fiber roving coated with thermoplastic resin - Google Patents
Composite carbon fiber roving coated with thermoplastic resinInfo
- Publication number
- JPH04163333A JPH04163333A JP28950390A JP28950390A JPH04163333A JP H04163333 A JPH04163333 A JP H04163333A JP 28950390 A JP28950390 A JP 28950390A JP 28950390 A JP28950390 A JP 28950390A JP H04163333 A JPH04163333 A JP H04163333A
- Authority
- JP
- Japan
- Prior art keywords
- thermoplastic resin
- carbon fiber
- roving
- composite
- fibers
- 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.)
- Pending
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 23
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 22
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 22
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 229920005992 thermoplastic resin Polymers 0.000 title claims abstract description 16
- 239000000835 fiber Substances 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 229920002292 Nylon 6 Polymers 0.000 abstract description 2
- 230000021615 conjugation Effects 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005470 impregnation Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 239000004753 textile Substances 0.000 description 4
- 238000009941 weaving Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- -1 polyethylene terephthalate Polymers 0.000 description 3
- 239000012783 reinforcing fiber Substances 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- 238000010304 firing Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004697 Polyetherimide Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009730 filament winding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920001601 polyetherimide Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Landscapes
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Inorganic Fibers (AREA)
- Reinforced Plastic Materials (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は熱可塑性樹脂をマトリックスとするコンポジッ
ト材に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a composite material having a thermoplastic resin as a matrix.
（従来の技術）
熱可塑性樹脂を補強繊維に含浸したプリプレグが市販さ
れているが、これらは剛くて織物や組み物を作ることは
困難である。またこれらは曲面へのいわゆるテープレイ
イングが困難である。一方熱可塑性樹脂を繊維状にした
り粉体にしたりして補強繊維と混合したフレキシブルな
材料も開発されているが混合で不均一が生じやすく、マ
） ＩＪソックス補強繊維とを均一に含浸し、ボイドの
ない成形品を確実に得るには含浸成形工程においである
レベル以上の圧力と時間とを要するのでそれだけ工程コ
ストが高くなるという欠点がある。(Prior Art) Prepregs in which reinforcing fibers are impregnated with thermoplastic resin are commercially available, but these are rigid and difficult to make into fabrics or braids. Furthermore, it is difficult to tape-lay these onto curved surfaces. On the other hand, flexible materials have been developed in which thermoplastic resin is made into fibers or powder and mixed with reinforcing fibers, but the mixture tends to be uneven. In order to reliably obtain a void-free molded product, a certain level of pressure and time are required in the impregnation molding process, which has the disadvantage that the process cost increases accordingly.
（発明が解決しようとする課題）
テープレイイングや製織等のテキスタイル加工に十分な
フレキシビリティ−を有し、しかも成形時の含浸が容易
に速やかに達成しうる熱可塑コンポジットＨを実現しよ
うとする。(Problem to be solved by the invention) An attempt is made to realize a thermoplastic composite H that has sufficient flexibility for textile processing such as tape laying and weaving, and that can be easily and quickly impregnated during molding. .
（課題を解決するための手段）
上記のフレキシビリティを保持するため複数本に分割さ
れた複合単位の複数本から構成されており、成形時の含
浸が容易に速やかに達成できるよう個々の複合繊維単位
においては限定された本数の炭素繊維の単繊維からなる
糸が実質的に熱可塑性樹脂マトリックスで被覆された構
造を取っている。(Means for solving the problem) In order to maintain the above-mentioned flexibility, it is composed of multiple composite units divided into multiple pieces, and individual composite fibers can be easily and quickly impregnated during molding. Each unit has a structure in which a limited number of single carbon fiber threads are substantially covered with a thermoplastic resin matrix.
本発明の炭素繊維とはＰＡＮ系でもピッチ系の炭素繊維
でもよい。The carbon fibers of the present invention may be PAN-based or pitch-based carbon fibers.
熱可塑性樹脂としてはナイロン６、ナイロン６６、ポリ
エチレンテレフタレート、ポリブチレンテレフタレート
、ポリカーボネート、ポリプロピレン、ポリエーテルイ
ミド、ポリフェニレンスルフィド、ポリエーテルエーテ
ルケトン等が挙げられるが特にこれらに限定されるわけ
ではない。Examples of the thermoplastic resin include nylon 6, nylon 66, polyethylene terephthalate, polybutylene terephthalate, polycarbonate, polypropylene, polyetherimide, polyphenylene sulfide, polyether ether ketone, etc., but are not particularly limited thereto.
本発明のロービング中の炭素繊維の含有率は１０〜８０
ｖｏ１％が好ましい。１０％以下の場合コンポジットに
した場合の炭素繊維による補強効果が有効に発揮できな
い。８０％以上の場合コンポジットにする際の含浸が困
難でボイド欠点が発生しやすい。The content of carbon fiber in the roving of the present invention is 10 to 80
vo1% is preferable. If it is less than 10%, the reinforcing effect of carbon fiber cannot be effectively exhibited when it is made into a composite. If it is 80% or more, it is difficult to impregnate it when making a composite, and void defects are likely to occur.
複合単位内の炭素繊維単繊維の本数は１０以上１０００
以下、特に好ましくは４０以上５００以下である。５０
０以上になるとロービングのフレキシビリティが失われ
、製織などのテキスタイル加工性が著しく低下する。ま
た含浸速度も低下する欠点が生じてくる。４０以下の場
合はコスト高になる欠点が生じてくる。本発明ロービン
グの典型的な製造法を以下具体的に説明する。焼成後必
要により酸化処理を施された高性能型炭素繊維をインラ
インで単繊維本数２００本づつの糸に分割し、該糸を第
１図に模式的に示されるダイを通してその間に溶融熱可
塑性樹脂にて糸の被覆を行う。The number of carbon fiber single fibers in a composite unit is 10 or more and 1000
Below, it is particularly preferably 40 or more and 500 or less. 50
If it exceeds 0, the flexibility of the roving is lost, and textile processability such as weaving is significantly reduced. Further, there arises a drawback that the impregnation rate is also reduced. If it is less than 40, there will be a drawback that the cost will be high. A typical manufacturing method of the roving of the present invention will be specifically explained below. After firing, the high-performance carbon fiber, which has been oxidized as necessary, is divided in-line into threads each containing 200 single fibers, and the threads are passed through a die schematically shown in Figure 1, during which time a molten thermoplastic resin is applied. The yarn is covered with a .
被覆糸は下部に設置した冷却ロールで冷却し複合単位を
得、これを１５本集束しつつ巻き取って３にの複合炭素
繊維ロービングが得られる。The coated yarn is cooled with a cooling roll installed at the bottom to obtain a composite unit, and 15 of these are bundled and wound to obtain composite carbon fiber roving 3.
本発明の複合炭素繊維ロービングは熱可塑性コンポジッ
ト用材料として極めて優秀な材料である。The composite carbon fiber roving of the present invention is an extremely excellent material for thermoplastic composites.
熱可塑性樹脂で被覆された複合単位で構成されているた
め、本発明のロービングを用いて例えば織編等のテキス
タイル加工工程やフィラメントワインディング成形やプ
ルトルーシロン成形等の工程でのガラス繊維の切断総数
がほとんど生じない。Since the roving of the present invention is composed of composite units coated with thermoplastic resin, the total number of cuts of glass fibers can be reduced in textile processing processes such as weaving and knitting, filament winding molding, pultrusilon molding, etc. rarely occurs.
また十分な可撓性と耐折性を有しているのでこうした工
程通過性が極めて高いという特徴がある。Furthermore, since it has sufficient flexibility and bending resistance, it has the characteristic of extremely high passability through such processes.
また可撓な布状物、テープ等を容易に作りうるのでこれ
らを用いるといわゆる型に沿ったコンタクト成形が簡易
に実行できる。本発明では複合単位内の炭素繊維単繊維
の本数が１０００以下好ましくは５００以下であるので
本ロービングを被覆された熱可塑性樹脂が溶融流動する
温度まで加熱しつつ加圧することによって該熱可塑性樹
脂は容易にガラス繊維ヤーン中に侵入し、速やかに含浸
が進みコンポジット化することが出来る。In addition, since flexible cloth-like materials, tapes, etc. can be easily made, contact molding along a so-called mold can be easily performed using these materials. In the present invention, since the number of carbon fiber single fibers in the composite unit is 1000 or less, preferably 500 or less, the thermoplastic resin coated with the present roving is heated and pressurized to a temperature at which it melts and flows. It easily penetrates into the glass fiber yarn, and impregnation progresses rapidly, making it possible to form a composite.
またマトリックスとして熱可塑性樹脂を用いているため
、熱硬化型コンポジット材の場合とは異って■キユアリ
ング処理が不要である、■得られた成形物がより強靭で
ある（脆くない）、■材料としてのシェルフライフが極
めて長い、■硬化剤やマトリックス液の毒性がなく、こ
うした液状物から来る汚れがない、という長所がある。In addition, since a thermoplastic resin is used as the matrix, unlike thermosetting composite materials, there is no need for curing treatment, ■ the resulting molded product is stronger (not brittle), and ■ the material It has the advantage of having an extremely long shelf life, and (1) no toxicity from hardening agents or matrix liquids, and no stains from such liquids.
（実施例）
実施例１
焼成、酸化処理工程を経たＰＡＮ系の高性能型炭素繊維
をインラインで単繊維本数２００本づつの糸に分割し、
該糸を第１図に模式的に示されるダイを通し、その間に
２４０°Ｃに溶融したＮＹ８樹脂を定量づつ糸の両側よ
り押し出し、糸の被覆を行った。被覆糸は下部に設置し
た冷却ロールで冷却して複合単位を得、これを１５木集
束しつつ巻き取って３にの複合炭素繊維ロービングが得
られた。かくして得られたロービングにおける補強繊維
の体積分率は５８％であった。また本ロービングにおけ
るボイド率は２２％であった。(Example) Example 1 PAN-based high-performance carbon fiber that has undergone firing and oxidation treatment processes is divided in-line into threads each containing 200 single fibers.
The yarn was passed through a die schematically shown in FIG. 1, and a fixed amount of NY8 resin melted at 240° C. was extruded from both sides of the yarn to coat the yarn. The coated yarn was cooled with a cooling roll installed at the bottom to obtain a composite unit, which was bundled into 15 pieces and wound to obtain composite carbon fiber roving 3. The volume fraction of reinforcing fibers in the roving thus obtained was 58%. Moreover, the void rate in this roving was 22%.
ロービングを用いて１２０スピンドルの丸打ち組み物を
ブレード角４６６で１０ｍ／分の速度で製紐したが、こ
の間全くトラブルなく製紐できた。A 120-spindle round braid was made using a roving at a speed of 10 m/min with a blade angle of 466, and the string was made without any trouble during this time.
一方単繊維直径７μｍの単繊維本数３０００の炭素繊維
ロービングを用いて同一条件で製紐したところ毛羽が多
発して製紐できなかった。また本発明の上記ロービング
を用いて張力をかけつつ一軸に配列し、これを２４０″
Ｃに加熱後５ ｋｇ ／ ｃａの圧力で５分間加圧する
ことによって一軸配向成形品を得ることが出来た。この
成形品の曲げ強度は１８７０ ＭＰａであった。一方３
にの炭素繊維と前記と同一の樹脂から得られた７９０デ
ニール１５８フイラメントの半延伸糸とを交互に一軸に
配向し、上記と同一条件で成形することによって一軸配
向成形品を得た。本成形品の曲げ強度は７９０ ＭＰａ
であった。また本成形品の断面の顕微鏡観察では多数の
ボイドが見出され含浸が不十分であることがわかった。On the other hand, when a carbon fiber roving with a single fiber diameter of 7 μm and 3,000 single fibers was used to make a string under the same conditions, it was impossible to make a string due to excessive fuzz. Moreover, using the above-mentioned roving of the present invention, the rovings are arranged uniaxially while applying tension, and the roving is
A uniaxially oriented molded product could be obtained by heating at C and pressing at a pressure of 5 kg/ca for 5 minutes. The bending strength of this molded product was 1870 MPa. On the other hand 3
A uniaxially oriented molded product was obtained by alternately uniaxially orienting the carbon fibers of the above and semi-drawn yarns of 790 denier 158 filaments obtained from the same resin as above, and molding them under the same conditions as above. The bending strength of this molded product is 790 MPa
Met. Further, microscopic observation of the cross section of this molded article revealed many voids, indicating that impregnation was insufficient.
（発明の効果）
本発明によりテープレイイングや製織等のテキスタイル
加工に十分なフレキシビリティ−を有し、かつ成形後の
含浸が容易に速やかに達成しうる熱可塑性コンポジット
祠を提供することができる。(Effects of the Invention) According to the present invention, it is possible to provide a thermoplastic composite shell that has sufficient flexibility for textile processing such as tape laying and weaving, and that can be easily and quickly impregnated after molding. .
第１図は本発明の熱可塑性樹脂で被覆された複合炭素繊
維のロービングを製造する装置の切かき断面を示す。
第１図における
１、２．３：糸（複数本の炭素繊維）
４ ニガイドロール
５．５’ ：開閉ダイ
６ ：不活性ガス
７ ：溶融熱可塑性樹脂
８ ：被覆された炭素繊維ロービング
９ ：冷却ローラ
１０：溶融熱可塑性樹脂を貯める室壁
第２図は第１図の開閉ダイ５．５′の１で示される糸が
導かれる面（溝付リップ）を示し、第３図は前記溝付リ
ップを上部からみた図である。FIG. 1 shows a cutaway cross section of an apparatus for producing composite carbon fiber rovings coated with a thermoplastic resin according to the present invention. 1 and 2.3 in Fig. 1: Yarn (multiple carbon fibers) 4 Ni guide roll 5.5': Opening/closing die 6: Inert gas 7: Molten thermoplastic resin 8: Covered carbon fiber roving 9: Cooling roller 10: chamber wall for storing molten thermoplastic resin FIG. 2 shows the surface (grooved lip) on which the thread shown by 1 of the opening/closing die 5.5' in FIG. 1 is guided, and FIG. FIG. 3 is a view of the attached lip viewed from above.
Claims (1)
脂で被覆せしめることによって得られる複合単位の複数
本から構成されてなる複合炭素繊維ロービング。(1) A composite carbon fiber roving composed of a plurality of composite units obtained by coating a plurality of carbon fiber single fiber threads with a thermoplastic resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28950390A JPH04163333A (en) | 1990-10-26 | 1990-10-26 | Composite carbon fiber roving coated with thermoplastic resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28950390A JPH04163333A (en) | 1990-10-26 | 1990-10-26 | Composite carbon fiber roving coated with thermoplastic resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04163333A true JPH04163333A (en) | 1992-06-08 |
Family
ID=17744117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28950390A Pending JPH04163333A (en) | 1990-10-26 | 1990-10-26 | Composite carbon fiber roving coated with thermoplastic resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04163333A (en) |
-
1990
- 1990-10-26 JP JP28950390A patent/JPH04163333A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4770915A (en) | Flexible composite material and process for preparing same | |
| EP0814916A1 (en) | Flexible low bulk pre-impregnated tow | |
| US5989710A (en) | Molding material for thermoplastic composites | |
| JP5919755B2 (en) | Manufacturing method of fiber material | |
| CN110281550A (en) | A kind of preparation method that weaving continuous fiber reinforced thermoplastic prepreg tape and product | |
| JPH08336879A (en) | Resin-coated reinforcing fiber yarn, molding material and manufacture thereof | |
| US5837372A (en) | Pliable tackified fiber tow and method of producing same | |
| EP0581852B1 (en) | Protected brittle fiber yarns | |
| JP3178562B2 (en) | Yarn for thermoplastic composites | |
| JPH04163333A (en) | Composite carbon fiber roving coated with thermoplastic resin | |
| CN1646443A (en) | Fiber glass product incorporating string binders | |
| JP3386158B2 (en) | Molding materials and filament wound moldings | |
| JP3672043B2 (en) | Thermoplastic composite continuous molding and continuous molding method | |
| JPH0280639A (en) | Unidirectional preform sheet and production thereof | |
| JP3317358B2 (en) | Composite reinforcing fiber material impregnated with thermoplastic resin | |
| JPH04183729A (en) | Molding material for thermoplastic composite | |
| JPH02308824A (en) | Material for thermoplastic composite | |
| JPH02173125A (en) | Production of fiber-reinforced resin composite prepreg | |
| Hasselbrack et al. | Evaluation of carbon‐fiber‐reinforced thermoplastic matrices in a flat braid process | |
| JP3345661B2 (en) | Yarn for thermoplastic composites | |
| JP3289783B2 (en) | Composite reinforcing fiber material impregnated with thermoplastic resin | |
| JPH04163334A (en) | Composite glass fiber roving coated with thermoplastic resin | |
| JPH0473235A (en) | Production of blended yarn for use in composite material | |
| JPH02105830A (en) | Production of carbon fibber braid | |
| JPH0359038A (en) | Precursor of thermoplastic composite material and its production |