JPH0768544A - Impregnation of fiber bundle with resin - Google Patents
Impregnation of fiber bundle with resinInfo
- Publication number
- JPH0768544A JPH0768544A JP24196093A JP24196093A JPH0768544A JP H0768544 A JPH0768544 A JP H0768544A JP 24196093 A JP24196093 A JP 24196093A JP 24196093 A JP24196093 A JP 24196093A JP H0768544 A JPH0768544 A JP H0768544A
- Authority
- JP
- Japan
- Prior art keywords
- fiber bundle
- resin
- fiber
- impregnation
- 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
Landscapes
- Reinforced Plastic Materials (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は補強用繊維束に合成樹脂
を被覆または含浸（本明細書ではこれら両者を含浸とい
う。）させ、繊維強化樹脂組成物を製造する際、繊維束
を効率よく開繊する方法に関する。このようにして得ら
れた繊維強化樹脂組成物は高剛性、高耐衝撃性、耐クリ
ープ性が要求される自動車部品、建材あるいは産業資材
分野の部品に利用される。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention coats or impregnates a reinforcing fiber bundle with a synthetic resin (in this specification, both are referred to as impregnation) to efficiently produce a fiber bundle when producing a fiber-reinforced resin composition. Regarding opening method. The fiber-reinforced resin composition thus obtained is used for automobile parts, building materials or parts for industrial materials, which are required to have high rigidity, high impact resistance and creep resistance.
【０００２】[0002]
【従来の技術】従来合成樹脂強化に用いられる繊維は、
モノフィラメントを集束した形で取り扱われるが、これ
らが工程の途中で分散して作業性の低下の防止あるいは
フィラメント相互の摩擦等でフィラメントの損傷を防止
する目的で、モノフィラメントを数十〜数千本を少量の
集束剤またはサイジング剤と呼ぶバインダーで集束した
ストランドや、更にこのストランドを数十本単位でまと
めたロービング（これらを繊維束という。）の形にして
用いられる。2. Description of the Related Art Fibers conventionally used for reinforcing synthetic resins are
Although the monofilaments are handled in a bundled form, they are dispersed in the middle of the process to prevent deterioration of workability or damage to the filaments due to friction between the filaments, etc. It is used in the form of a strand bundled with a small amount of a binder called a sizing agent or a sizing agent, or a roving in which several tens of the strands are combined (these are referred to as fiber bundles).
【０００３】この繊維束に合成樹脂を含浸させる場合、
繊維束の間隙（厳密には個々のモノフィラメントの周
囲）に樹脂を充分浸透させることが製品の品質向上のた
めに必要不可欠の条件となる。When this fiber bundle is impregnated with a synthetic resin,
Sufficient penetration of the resin into the gaps of the fiber bundle (strictly, around individual monofilaments) is an essential condition for improving the quality of the product.
【０００４】熱硬化性樹脂の場合、該含浸工程で使用す
る樹脂粘度は、プレポリマーを用いるため比較的小さ
く、一般的に含浸性は良好であるが、これが熱可塑性樹
脂の場合は溶融された樹脂の粘度が熱硬化性樹脂プレポ
リマーに比べ遥かに高く、このための多くの手段が提案
されている。In the case of a thermosetting resin, the viscosity of the resin used in the impregnation step is relatively small because the prepolymer is used, and the impregnation property is generally good. However, in the case of a thermoplastic resin, it was melted. The viscosity of the resin is much higher than that of the thermosetting resin prepolymer, and many means for this have been proposed.
【０００５】中でも繊維の粉砕を避ける必要があるとき
は、繊維束を連続的に含浸装置に導入し、同時に供給さ
れる樹脂により含浸し、引き出し、これを切断して成形
材料とする電線被覆類似の引抜き成形法またはプルトル
ージョン法が主として用いられている。[0005] Above all, when it is necessary to avoid crushing of fibers, a fiber bundle is continuously introduced into an impregnating device, impregnated with a resin supplied at the same time, drawn out, and then cut to obtain a molding material. The pultrusion method or the pultrusion method is mainly used.
【０００６】この引抜き成形方法またはプルトルージョ
ン法は、装置、工程とも簡単であり、製造工程中に繊維
の粉砕を伴わず、成形材料中の繊維の長さを任意に選択
できるため補強効果を高くすることが容易である。しか
し、繊維束の開繊が充分に行われないことが多いため凝
集を生じ易く、マトリックス樹脂がモノフィラメント間
に充分含浸せず、分散の悪い製品となる傾向があった。The pultrusion method or the pultrusion method is simple in equipment and process, and does not involve crushing of fibers during the manufacturing process, and the length of the fibers in the molding material can be arbitrarily selected, so that the reinforcing effect is high. Easy to do. However, since the fiber bundle is often not sufficiently opened, agglomeration is likely to occur, the matrix resin is not sufficiently impregnated between the monofilaments, and the product tends to be poorly dispersed.
【０００７】特に補強効果を高めるため繊維の配合量を
増すことは一層凝集性を高め、そのため本来補強される
べき製品の強度が低下したり、製品の外部にフィラメン
トが飛び出して外観を悪化させたり、極端な場合は繊維
の束がペレットから抜け落ちたりして補強性能、外観、
安全性、衛生性において問題を有していた。[0007] In particular, increasing the blending amount of fibers to enhance the reinforcing effect further enhances the cohesiveness, so that the strength of the product to be originally reinforced is lowered, or the filament is ejected to the outside of the product to deteriorate the appearance. , In extreme cases, the bundle of fibers may fall out of the pellets, resulting in reinforcement performance, appearance,
There was a problem in safety and hygiene.
【０００８】このため樹脂の含浸工程に繊維束の開繊を
はかるため、ロールあるいはバー等各種の開繊装置を組
み込んだ含浸装置の提案がされてきた。しかし、これら
の方法ではバインダーの影響で繊維束の開繊が妨げられ
たり、繊維束の製造工程で発生する部分的な撚りやねじ
れ（一般的に言うキンクの状態）が開繊を妨げる。特に
繊維束の前処理段階で繊維束の撚り、ねじれが解消され
ず、そのまま含浸工程まで持ち込まれると、含浸性が部
分的に低下したり、繊維配列が完全に一方向にそろって
いない、即ちねじれが残っているため、製品上の欠陥と
なる場合がある。このような状況下において繊維束の個
々のフィラメントの整列、開繊を高めるためには繊維束
の張力を高めたり、繊維束と接触するバー、ロール表面
を増やす手段を採ることが行われるが、このような手段
は繊維束自体の損傷が増大し、結果的にはフィラメント
が切断しうる状況となる。Therefore, in order to open the fiber bundle in the resin impregnation step, there has been proposed an impregnating device incorporating various kinds of opening devices such as a roll or a bar. However, in these methods, the opening of the fiber bundle is hindered by the influence of the binder, and the partial twisting or twisting (generally called a kink state) generated in the manufacturing process of the fiber bundle hinders the fiber opening. In particular, when the twisting and twisting of the fiber bundle is not eliminated in the pretreatment stage of the fiber bundle and the fiber is brought into the impregnation step as it is, the impregnating property is partially reduced, or the fiber arrangement is not completely aligned in one direction, that is, The remaining twist may cause product defects. In such a situation, in order to improve the alignment and opening of individual filaments of the fiber bundle, it is possible to increase the tension of the fiber bundle, a bar that comes into contact with the fiber bundle, or a means of increasing the roll surface. Such means increase the damage of the fiber bundle itself, resulting in a situation where the filament can be cut.
【０００９】[0009]
【発明が解決しようとする課題】本発明は繊維束に合成
樹脂を含浸させ、高剛性、高耐衝撃性、耐クリープ性の
すぐれた繊維強化樹脂組成物を製造するに際し、繊維束
の張力を高めず、繊維束自体の損傷をもたらさない効果
的な樹脂の含浸法の開発を目的とする。DISCLOSURE OF THE INVENTION According to the present invention, when a fiber bundle is impregnated with a synthetic resin to produce a fiber-reinforced resin composition having high rigidity, high impact resistance and creep resistance, the tension of the fiber bundle is controlled. The purpose is to develop an effective resin impregnation method that does not raise the fiber bundle and does not damage the fiber bundle itself.
【００１０】[0010]
【課題を解決するための手段】本発明は、繊維束に樹脂
を引抜き成形方法により含浸する方法において、樹脂含
浸前に繊維束を、使用されている集束剤またはサイジン
グ剤の融点以上に加熱した状態で開繊装置により開繊
し、次いで樹脂を含浸することを特徴とする繊維束に樹
脂を含浸する方法により前記の目的を達成できることを
見いだした。この際、固定された複数本の段差バーの間
を順次通過させて開繊する方式の開繊装置を用いること
により、更に繊維束を効率的に開繊できることを見いだ
した。According to the present invention, in a method of impregnating a fiber bundle with a resin by a drawing method, the fiber bundle is heated to a temperature equal to or higher than the melting point of a sizing agent or a sizing agent used before the resin impregnation. It has been found that the above object can be achieved by a method of impregnating a fiber bundle with a resin, which is characterized in that the fiber bundle is opened in a state by a fiber opening device and then impregnated with the resin. At this time, it was found that the fiber bundle can be further efficiently opened by using an opening device of the type in which the plurality of fixed step bars are sequentially passed to open the fiber bundle.
【００１１】本発明における合成樹脂とは、補強用繊維
に合成樹脂を含浸して用いる熱硬化性（プレポリマー）
および熱可塑性のいずれであっても良い。特に、溶融粘
度が高く含浸が困難とされる熱可塑性樹脂においてその
効果が発揮できる。The synthetic resin in the present invention is a thermosetting (prepolymer) used by impregnating reinforcing fibers with the synthetic resin.
It may be either thermoplastic or thermoplastic. In particular, the effect can be exhibited in a thermoplastic resin which has a high melt viscosity and is difficult to impregnate.
【００１２】本発明に使用できる熱可塑性樹脂としては
押出機で可塑化可能であれば特に制限する理由はない
が、例えばポリエチレン、ポリプロピレン、ポリスチレ
ン、ポリアミド、ポリカーボネート、ポリブチレンテレ
フタレート等が挙げられる。またこれらの樹脂のブレン
ド物および各種フィラーを充填した樹脂組成物であって
も構わない。更に周知の技術として繊維との親和性を持
たせた変性樹脂の使用は特に好ましい。樹脂の溶融粘度
は特に制限はないが、好ましくは剪断速度１０2ｓｅｃ
-1での粘度が１０1 〜１０4 ｐｏｉｓｅ程度である。The thermoplastic resin usable in the present invention is not particularly limited as long as it can be plasticized by an extruder, and examples thereof include polyethylene, polypropylene, polystyrene, polyamide, polycarbonate, polybutylene terephthalate and the like. Also, a blend of these resins and a resin composition filled with various fillers may be used. Further, as a well-known technique, it is particularly preferable to use a modified resin having affinity with fibers. The melt viscosity of the resin is not particularly limited, but the shear rate is preferably 10 2 sec.
The viscosity at -1 is about 10 1 to 10 4 poise.
【００１３】また本発明に用いられる補強用繊維の種類
としては、Ｅ−ガラス、Ｓ−ガラス等のガラス繊維、ピ
ッチ系、ポリアクリロニトリル系等の炭素繊維、また芳
香族ポリアミド繊維、炭化珪素繊維、アルミナ繊維等の
セラミック系繊維、また金属繊維が、またマトリックス
樹脂がポリエチレン、ポリプロピレンまたはポリスチレ
ン等のごとく比較的低温で可塑化可能な樹脂であるとき
は、ナイロン繊維、ポリエステル繊維等の有機繊維も使
用でき、これら単独あるいは複合して用いられる。な
お、繊維の太さ、表面処理剤、集束剤の種類、量などに
ついては通常用いられているものと同じであれば使用で
きる。集束剤の融点は通常７０〜２００℃である。繊維
強化樹脂組成物中の補強用繊維の配合量は特に制限され
るものではないが、一般的にいって使用目的、樹脂の種
類、繊維の種類等により若干の差はあるが、１０重量％
から８０重量％程度である。The types of reinforcing fibers used in the present invention include glass fibers such as E-glass and S-glass, carbon fibers such as pitch type and polyacrylonitrile type, aromatic polyamide fibers, silicon carbide fibers, Ceramic fibers such as alumina fibers, metal fibers, and organic fibers such as nylon fibers and polyester fibers when the matrix resin is a resin that can be plasticized at a relatively low temperature such as polyethylene, polypropylene or polystyrene. These can be used alone or in combination. The fiber thickness, surface treatment agent, sizing agent type, amount and the like may be the same as those usually used. The melting point of the sizing agent is usually 70 to 200 ° C. The content of the reinforcing fiber in the fiber reinforced resin composition is not particularly limited, but generally there are some differences depending on the purpose of use, the type of resin, the type of fiber, etc., but 10% by weight
To about 80% by weight.
【００１４】なお、本発明によって得られる繊維強化樹
脂組成物の形態としては、ダイス出口の形状を変えるこ
とにより任意の形状、例えば棒状、シート状、樋状、Ｌ
字状等限定されるものではないが、通常は１０〜５０ｍ
ｍの長さに切断した成形用材料ペレットとして好適に用
いられる。As the form of the fiber reinforced resin composition obtained by the present invention, by changing the shape of the die outlet, an arbitrary shape such as a rod shape, a sheet shape, a gutter shape, or an L shape can be obtained.
Characters are not limited, but usually 10-50m
It is preferably used as a molding material pellet cut into a length of m.
【００１５】以下、本発明を図面を用いて説明する。図
１は熱可塑性樹脂を用いる場合の繊維束に樹脂を含浸す
る場合を示す。繊維束を巻いたボビン１により張力を調
整されて引き出された繊維束２は使用されている集束剤
またはサイジング剤の融点以上で、これらの分解が生じ
て変色、物性低下が生じない温度範囲であり、通常は融
点より１００℃は高くない範囲に加熱された繊維束開繊
装置３において、各々のフィラメントを開繊される。The present invention will be described below with reference to the drawings. FIG. 1 shows a case where a fiber bundle is impregnated with a resin when a thermoplastic resin is used. The fiber bundle 2 whose tension is adjusted by the bobbin 1 around which the fiber bundle is wound is drawn out at a temperature not lower than the melting point of the sizing agent or sizing agent used, so that decomposition of these causes no discoloration or deterioration of physical properties. In general, each filament is opened in the fiber bundle opening device 3 which is heated to a range not higher than 100 ° C. above the melting point.
【００１６】次いで充分に開繊された繊維束は含浸装置
４において押出機またはギヤポンプ等から供給される溶
融樹脂に含浸され、該樹脂含浸繊維束は賦形装置５によ
り樹脂含浸量を調節されると共に任意の断面形状に賦形
され、冷却装置６において形状が固定される。冷却され
た繊維強化樹脂組成物は引取装置７を経て切断装置８に
より適当な長さに切断され、製品となる。Then, the sufficiently opened fiber bundle is impregnated with a molten resin supplied from an extruder or a gear pump in an impregnation device 4, and the resin impregnation amount of the resin impregnated fiber bundle is adjusted by a shaping device 5. Together with this, it is shaped into an arbitrary cross-sectional shape and fixed in shape in the cooling device 6. The cooled fiber reinforced resin composition passes through the take-up device 7 and is cut into an appropriate length by the cutting device 8 to be a product.
【００１７】繊維束開繊装置３の開繊する方式としては
繊維束が充分開繊できるものであれば使用できるが、構
造の簡便さ、操作の容易性からテンションバー方式が好
ましい。この方式によるときは繊維束の各フィラメント
は整列、開繊されるため供給される樹脂に良く含浸され
ることになる。As a method for opening the fiber bundle opening device 3, any one can be used as long as the fiber bundle can be opened sufficiently, but the tension bar method is preferable from the viewpoint of the simple structure and easy operation. With this method, the filaments of the fiber bundle are aligned and opened, so that the resin supplied is well impregnated.
【００１８】開繊装置３内のテンションバーは自在にそ
の位置を変えられる構造のものが望ましく、繊維束に係
る張力と開繊効果を吟味した上で、繊維束とテンション
バーの接触角を変えるようにテンションバー相互の位置
関係を変更する。テンションバーの形状は一般的に言え
ば、直径２０ｍｍ以上の円柱状のものであって、その表
面は面粗度の小さいものである。更に複数の繊維束を並
列させて処理する場合は、バーの表面にガイド状の溝を
設けることも可能である。It is desirable that the tension bar in the fiber-spreading device 3 has a structure in which the position can be freely changed. After examining the tension and fiber-spreading effect of the fiber bundle, the contact angle between the fiber bundle and the tension bar is changed. Change the positional relationship between the tension bars. Generally speaking, the shape of the tension bar is a columnar shape having a diameter of 20 mm or more, and its surface has a small surface roughness. Further, when processing a plurality of fiber bundles in parallel, it is possible to provide a guide groove on the surface of the bar.
【００１９】またテンションバーの本数は通常３本以上
で、繊維束の損傷が発生しない本数以下とするのが好ま
しい。更にテンションバーの材質は、加熱温度に耐えら
れるもので、表面硬度が高く、耐摩耗性を有するものが
望ましく、例えばステンレス鋼等の硬質鋼やその表面に
硬質メッキやセラミック溶射したものである。The number of tension bars is usually 3 or more, preferably less than or equal to the number at which damage to the fiber bundle does not occur. Further, the material of the tension bar is preferably one that can withstand the heating temperature, has high surface hardness and has abrasion resistance, and is, for example, hard steel such as stainless steel, or hard plating or ceramic sprayed on the surface thereof.
【００２０】開繊装置と別に設けられた、またはそれと
一体に設けられた樹脂含浸装置４は、段差ロール等を備
えた室内に樹脂を供給すると共に、開繊した繊維束を該
段差ロールを交互に通す公知の装置を用いることができ
る。含浸後は各繊維束を賦形装置５で一体にし、断面が
円形、角形等任意の形状に賦形する。The resin impregnating device 4 provided separately from the fiber-spreading device or integrally with the fiber-spreading device supplies the resin into a room provided with step rolls and the like, and opens the fiber bundles alternately with the step rolls. A known device that can be passed through can be used. After the impregnation, the respective fiber bundles are integrated by the shaping device 5 and shaped into an arbitrary shape such as a circular or rectangular cross section.
【００２１】図２および図３にテンションバー方式の繊
維束開繊装置の例を示す。繊維束開繊装置３における繊
維束の加熱方法は任意の手段がとれるが、加熱効率の高
い方法が望ましい。いずれも繊維束２は断熱処理された
加熱槽９内部にて複数のテンションバー１１に張力下通
すことで開繊、整列、および脱撚が達成される。図２で
は加熱方法として加熱槽９の内部にセラミックヒーター
１２を装着し、その輻射熱で直接繊維束を加熱するもの
である。2 and 3 show an example of a tension bar type fiber bundle opening device. Although any method can be used as a method for heating the fiber bundle in the fiber bundle opening device 3, a method with high heating efficiency is desirable. In each case, the fiber bundle 2 is passed through a plurality of tension bars 11 under tension inside the heat-treated heating tank 9 to achieve opening, alignment, and detwisting. In FIG. 2, as a heating method, a ceramic heater 12 is mounted inside the heating tank 9, and the radiant heat directly heats the fiber bundle.
【００２２】一方、図３の繊維束開繊装置は加熱槽９内
に熱風の出入口１３、１４を設け、槽内での熱風循環に
て加熱する方法である。テンションバー１１に直接熱入
力して繊維束を加熱することも可能である。しかし繊維
束の均一な加熱のためには温風循環方法が望ましい。On the other hand, the fiber bundle opening device of FIG. 3 is a method in which hot air inlets and outlets 13 and 14 are provided in the heating tank 9 and heating is performed by circulating hot air in the tank. It is also possible to directly input heat to the tension bar 11 to heat the fiber bundle. However, a warm air circulation method is desirable for uniform heating of the fiber bundle.
【００２３】繊維束の加熱温度については、繊維束の表
面処理剤、特に集束剤の融点以上にすべきであり、該温
度では繊維束の開繊性、および脱撚は比較的小さい張力
で達成できる上、繊維束自体の損傷も少なくなる。The heating temperature of the fiber bundle should be equal to or higher than the melting point of the surface treatment agent for the fiber bundle, especially the sizing agent, at which temperature the openability of the fiber bundle and the detwisting are achieved with a relatively small tension. In addition, the fiber bundle itself is less damaged.
【００２４】繊維束の含浸工程前における加熱は、繊維
束の開繊効率を改善するだけでなく、フィラメントを予
熱することになり、この結果樹脂を含浸する工程での樹
脂とフィラメントの濡れ性（含浸性）を高める効果も有
しており、加熱槽９内部の温度はこのことを勘案して決
めるべきであるが、繊維束の表面処理剤が変質をする温
度や繊維束のフィラメント材質の軟化温度以下にする必
要があるのは言うまでもない。The heating before the impregnation step of the fiber bundle not only improves the opening efficiency of the fiber bundle but also preheats the filament, and as a result, the wettability of the resin and the filament in the step of impregnating the resin ( It also has the effect of increasing the impregnation property, and the temperature inside the heating tank 9 should be determined in consideration of this, but the temperature at which the surface treatment agent of the fiber bundle is altered and the filament material of the fiber bundle is softened. It goes without saying that the temperature needs to be below the temperature.
【００２５】[0025]
【作用】本発明は、従来の樹脂の含浸が繊維束の開繊と
合成樹脂の含浸の２つの操作を一つの工程で行われてい
たのを、これをそれぞれ分離すると共に、繊維束の開繊
操作を繊維束の集束に使用されているバインダーの融点
以上の温度に行うことにより開繊操作を確実に行った点
にある。According to the present invention, in the conventional resin impregnation, the two operations of opening the fiber bundle and impregnating the synthetic resin were performed in one step. The point is that the fiber opening operation is reliably performed by performing the fiber opening operation at a temperature equal to or higher than the melting point of the binder used for bundling the fiber bundle.
【００２６】このため繊維束の製造の際のフィラメント
の部分的な撚りやねじれがあっても、溶融樹脂などの付
着による妨害がなく、バインダーの影響もないため開繊
が順調に行うことができ、テンションバー上に繊維束の
フィラメントがうまく整列するように開繊することが可
能となる。Therefore, even if the filament is partially twisted or twisted during the production of the fiber bundle, there is no hindrance due to the adhesion of the molten resin or the like, and there is no influence of the binder, so that the opening can be smoothly performed. , It is possible to open so that the filaments of the fiber bundle are well aligned on the tension bar.
【００２７】このため、含浸装置において溶融樹脂は充
分に開繊された繊維束上に供給されるため、全体に対し
均等に含浸することが可能となった。Therefore, in the impregnation device, the molten resin is supplied onto the sufficiently opened fiber bundles, so that it is possible to impregnate the entire resin evenly.
【００２８】[0028]
【実施例】径１６μｍのＥ−ガラス繊維（２２００番
手、集束本数４０００本）の繊維束を用い、図３に示さ
れている温風循環方式の繊維束開繊装置の効果を検討し
た。EXAMPLE The effect of the warm air circulation type fiber bundle opening device shown in FIG. 3 was examined by using a fiber bundle of E-glass fiber (2200 count, 4000 bundles) having a diameter of 16 μm.
【００２９】繊維束開繊装置の構造としては、加熱室長
さ３ｍ、風量１００リットル／分の加熱槽の内部に径３
０ｍｍのテンションバー４本を配置した。配置位置は互
いのバーの間隔を８０ｍｍとし、繊維束とバーの接触角
は約８０度とした。加熱温度は１７０℃とした。（繊維
束集束剤の融点は１４０℃）As the structure of the fiber bundle opening device, the heating chamber has a length of 3 m and an air volume of 100 liters / min.
Four 0 mm tension bars were placed. The arrangement positions were such that the distance between the bars was 80 mm, and the contact angle between the fiber bundle and the bars was about 80 degrees. The heating temperature was 170 ° C. (The melting point of the fiber bundle sizing agent is 140 ° C)
【００３０】上記繊維束を開繊装置に毎分１５ｍの速度
で通したときの繊維束の開繊状態は加熱槽の出口にて観
察したところ、平均の開繊幅は２２ｍｍで、繊維束の撚
りはほとんど解消されていた。ちなみにこのときの繊維
束の張力は２ｋｇｆであった。The opened state of the fiber bundle when the fiber bundle was passed through the opening device at a speed of 15 m / min was observed at the outlet of the heating tank, and the average opening width was 22 mm. The twist was almost eliminated. Incidentally, the tension of the fiber bundle at this time was 2 kgf.
【００３１】次に含浸状態を見るために本開繊装置に繊
維束を通した直後に、ＪＩＳ Ｋ−７２１０の表１；試
験条件１４（試験温度２３０℃、試験荷重２．１６ｋｇ
ｆ）のメルトフローレートが３０ｇ／１０分のホモポリ
プロピレンを押出機より連続的に供給しているクロスヘ
ッドダイに該開繊された繊維束を通し、溶融樹脂を含浸
させ、径３ｍｍのロッド状の成形体を得た。その含浸状
態はロッドを１５ｃｍの長さに切り、そのロッドを縦に
して切断面をインク液に浸漬し、インクの上昇高さで判
定した。樹脂が完全に含浸していない部分は毛細管現象
でインクが浸透する。従ってインクの上昇が大きいほど
含浸状態が悪いことを示す。試験の結果上昇高さは平均
して３ｍｍであった。Immediately after passing the fiber bundle through the fiber-spreading device to check the impregnation state, Table 1 of JIS K-7210; test condition 14 (test temperature 230 ° C., test load 2.16 kg).
The opened fiber bundle is passed through a crosshead die in which homopolypropylene having a melt flow rate of f) of 30 g / 10 is continuously supplied from an extruder, impregnated with molten resin, and rod-shaped with a diameter of 3 mm. A molded body of was obtained. The impregnated state was determined by cutting a rod into a length of 15 cm, making the rod vertical, immersing the cut surface in the ink liquid, and judging the rising height of the ink. Ink penetrates due to a capillary phenomenon in a portion not completely impregnated with resin. Therefore, the larger the rise of ink, the worse the impregnation state. As a result of the test, the height of rise was 3 mm on average.
【００３２】（比較例）実施例と同様に繊維束を開繊装
置に通したが、加熱は実施しなかった。開繊装置出口で
の繊維束の開繊状態は平均開繊幅が１７ｍｍであり、そ
の変動は大きく、所々繊維束の撚りが見られた。また同
様にポリプロピレンで含浸した後の含浸状態を観察した
ところ、インク上昇高さは平均して１０ｍｍであった。(Comparative Example) The fiber bundle was passed through the fiber-spreading device in the same manner as in Example, but no heating was carried out. In the opened state of the fiber bundle at the outlet of the fiber opening device, the average opening width was 17 mm, the variation was large, and twisting of the fiber bundle was observed in some places. Similarly, when the impregnation state after impregnation with polypropylene was observed, the height of rise of the ink was 10 mm on average.
【００３３】[0033]
【発明の効果】本発明は、引抜き成形法またはプルトル
ージョン法により繊維束に溶融熱可塑性樹脂または熱硬
化性樹脂プレポリマーに含浸させるに際して、使用され
ている繊維束のバインダーの融点より高温度に加熱、開
繊した後で樹脂を含浸することにあり、繊維の粉砕化を
避け、繊維束の張力を高めずに容易に開繊できるため、
繊維の損傷を伴わずに良い含浸性が得られることにあ
る。INDUSTRIAL APPLICABILITY When the fiber bundle is impregnated with the molten thermoplastic resin or the thermosetting resin prepolymer by the pultrusion method or the pultrusion method, the temperature is higher than the melting point of the binder of the fiber bundle used. Since it is to impregnate the resin after heating and opening, it is possible to easily open the fiber without crushing the fibers and increasing the tension of the fiber bundle,
A good impregnation property is obtained without damage to the fibers.
【００３４】このため製造された繊維強化樹脂は、補強
用繊維が損傷されていないため、高剛性、高耐衝撃性、
高耐クリープ性の樹脂組成物が得られる。Therefore, the fiber-reinforced resin produced has high rigidity, high impact resistance, and high strength because the reinforcing fibers are not damaged.
A resin composition having high creep resistance can be obtained.
【図１】本発明に係る繊維束に樹脂を含浸する装置の一
例である。FIG. 1 is an example of an apparatus for impregnating a fiber bundle with a resin according to the present invention.
【図２】本発明に係る繊維束開繊装置の一例の断面図で
ある。FIG. 2 is a sectional view of an example of a fiber bundle opening device according to the present invention.
【図３】本発明に係る繊維束開繊装置の他の例の断面図
である。FIG. 3 is a cross-sectional view of another example of the fiber bundle opening device according to the present invention.
１ ボビン ２ 繊維束 ３ 繊維束開繊装置 ４ 樹脂含浸装置 ５ 賦形装置 ６ 冷却装置 ７ 引取装置 ８ 切断装置 ９ 加熱槽 １０ ガイドロール １１ テンションバー １２ セラミックヒーター １３ 熱風入口 １４ 熱風出口 1 bobbin 2 fiber bundle 3 fiber bundle opening device 4 resin impregnation device 5 shaping device 6 cooling device 7 take-up device 8 cutting device 9 heating tank 10 guide roll 11 tension bar 12 ceramic heater 13 hot air inlet 14 hot air outlet
Claims (2)
浸する方法において、樹脂含浸前に繊維束を、使用され
ている集束剤またはサイジング剤の融点以上に加熱した
状態で開繊装置により開繊し、次いで樹脂を含浸するこ
とを特徴とする繊維束に樹脂を含浸する方法。1. A method of impregnating a fiber bundle with a resin by a pultrusion method, wherein the fiber bundle is opened by a fiber-spreading device in a state of being heated to a temperature equal to or higher than the melting point of a sizing agent or a sizing agent used before the resin impregnation. And then impregnating the resin with the resin.
通過させて、開繊する方式の開繊装置である請求項１記
載の繊維束に樹脂を含浸する方法。2. The method of impregnating a fiber bundle with a resin according to claim 1, wherein the fiber bundle is a fiber-spreading device of a type in which a plurality of fixed step bars are sequentially passed to open the fiber bundle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24196093A JPH0768544A (en) | 1993-09-01 | 1993-09-01 | Impregnation of fiber bundle with resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24196093A JPH0768544A (en) | 1993-09-01 | 1993-09-01 | Impregnation of fiber bundle with resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0768544A true JPH0768544A (en) | 1995-03-14 |
Family
ID=17082139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24196093A Pending JPH0768544A (en) | 1993-09-01 | 1993-09-01 | Impregnation of fiber bundle with resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0768544A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006015565A (en) * | 2004-06-30 | 2006-01-19 | Asahi Fiber Glass Co Ltd | Method and apparatus for manufacturing long fiber reinforced resin molding material |
| JP2007038599A (en) * | 2005-08-05 | 2007-02-15 | Owens Corning Seizo Kk | Process and apparatus for manufacturing filament-reinforced thermoplastic resin molding material |
| JP2011037133A (en) * | 2009-08-11 | 2011-02-24 | Ube Nitto Kasei Co Ltd | Method for manufacturing approximately rectangular frp string-like object coated with thermoplastic resin, and drop optical fiber cable using the frp string-like object |
| CN102115937A (en) * | 2009-12-30 | 2011-07-06 | 宁波荣溢化纤科技有限公司 | Preparation method of ultrahigh molecular weight polyethylene (UHMWPE) short fibers |
| CN102205569A (en) * | 2011-05-06 | 2011-10-05 | 西安交通大学 | Pore continuous adjustable gel filter for controlling content of gel in fiber bundle |
| KR101112689B1 (en) * | 2009-07-15 | 2012-02-16 | 대원케미칼주식회사 | Apparatus for production of a long fiber thermoplastic composite and production method thereof by using said apparatus |
| WO2012103929A2 (en) | 2011-01-31 | 2012-08-09 | Vkr Holding A/S | A pultrusion method and a pultruder apparatus for production of a product |
| WO2018062878A3 (en) * | 2016-09-28 | 2018-08-09 | 롯데케미칼 주식회사 | Device for manufacturing long fiber composite material |
-
1993
- 1993-09-01 JP JP24196093A patent/JPH0768544A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006015565A (en) * | 2004-06-30 | 2006-01-19 | Asahi Fiber Glass Co Ltd | Method and apparatus for manufacturing long fiber reinforced resin molding material |
| JP4646108B2 (en) * | 2004-06-30 | 2011-03-09 | オーウェンスコーニング製造株式会社 | Method and apparatus for producing long fiber reinforced resin molding material |
| JP2007038599A (en) * | 2005-08-05 | 2007-02-15 | Owens Corning Seizo Kk | Process and apparatus for manufacturing filament-reinforced thermoplastic resin molding material |
| WO2007018130A1 (en) * | 2005-08-05 | 2007-02-15 | Ocv Intellectual Capital, Llc | Process for production of long fiber-reinforced thermoplastic resin molding material and apparatus for the production |
| KR101112689B1 (en) * | 2009-07-15 | 2012-02-16 | 대원케미칼주식회사 | Apparatus for production of a long fiber thermoplastic composite and production method thereof by using said apparatus |
| JP2011037133A (en) * | 2009-08-11 | 2011-02-24 | Ube Nitto Kasei Co Ltd | Method for manufacturing approximately rectangular frp string-like object coated with thermoplastic resin, and drop optical fiber cable using the frp string-like object |
| CN102115937A (en) * | 2009-12-30 | 2011-07-06 | 宁波荣溢化纤科技有限公司 | Preparation method of ultrahigh molecular weight polyethylene (UHMWPE) short fibers |
| WO2012103929A2 (en) | 2011-01-31 | 2012-08-09 | Vkr Holding A/S | A pultrusion method and a pultruder apparatus for production of a product |
| WO2012103929A3 (en) * | 2011-01-31 | 2013-09-12 | Vkr Holding A/S | A pultrusion method and a pultruder apparatus |
| CN102205569A (en) * | 2011-05-06 | 2011-10-05 | 西安交通大学 | Pore continuous adjustable gel filter for controlling content of gel in fiber bundle |
| WO2018062878A3 (en) * | 2016-09-28 | 2018-08-09 | 롯데케미칼 주식회사 | Device for manufacturing long fiber composite material |
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