JPH02160511A - Production of fiber reinforced composite - Google Patents
Production of fiber reinforced compositeInfo
- Publication number
- JPH02160511A JPH02160511A JP63316707A JP31670788A JPH02160511A JP H02160511 A JPH02160511 A JP H02160511A JP 63316707 A JP63316707 A JP 63316707A JP 31670788 A JP31670788 A JP 31670788A JP H02160511 A JPH02160511 A JP H02160511A
- Authority
- JP
- Japan
- Prior art keywords
- thermoplastic resin
- fiber
- resin
- filaments
- reinforcing 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
- 239000003733 fiber-reinforced composite Substances 0.000 title claims description 36
- 238000004519 manufacturing process Methods 0.000 title claims description 25
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 81
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 238000002844 melting Methods 0.000 claims abstract description 4
- 230000008018 melting Effects 0.000 claims abstract description 4
- 239000012783 reinforcing fiber Substances 0.000 claims description 84
- 239000000463 material Substances 0.000 claims description 40
- 239000000843 powder Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 11
- 239000000835 fiber Substances 0.000 abstract description 27
- 229920005989 resin Polymers 0.000 abstract description 20
- 239000011347 resin Substances 0.000 abstract description 20
- 239000002131 composite material Substances 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 10
- 230000000717 retained effect Effects 0.000 description 10
- 239000003365 glass fiber Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 229920000049 Carbon (fiber) Polymers 0.000 description 4
- 239000004917 carbon fiber Substances 0.000 description 4
- 239000000088 plastic resin Substances 0.000 description 4
- 239000004952 Polyamide Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000004760 aramid Substances 0.000 description 2
- 229920006231 aramid fiber Polymers 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012784 inorganic fiber Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 239000011208 reinforced composite material Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- FAXZWVLVYZJMPC-UHFFFAOYSA-N butyl(sulfanylidene)tin Chemical compound CCCC[Sn]=S FAXZWVLVYZJMPC-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- GOQYKNQRPGWPLP-UHFFFAOYSA-N n-heptadecyl alcohol Natural products CCCCCCCCCCCCCCCCCO GOQYKNQRPGWPLP-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Reinforced Plastic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、強化繊維と熱可塑性樹脂とが一体化された繊
維強化複合材の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing a fiber reinforced composite material in which reinforcing fibers and a thermoplastic resin are integrated.
（従来の技術）
ストランド状の連続する強化繊維を、流動化された粉体
状熱可塑性樹脂（流動床）の中を通過させて強化繊維に
粉体状熱可塑性樹脂を保持させた後、加熱炉を通過させ
ることにより、粉体状熱可塑性樹脂を溶融させて強化繊
維と熱可塑性樹脂とを一体化させる繊維強化複合材の製
造方法は広く知られている。(Prior art) A continuous reinforcing fiber in the form of a strand is passed through a fluidized powder thermoplastic resin (fluidized bed) to retain the powder thermoplastic resin in the reinforcing fibers, and then heated. A method for producing a fiber-reinforced composite material in which a powdered thermoplastic resin is melted by passing through a furnace to integrate reinforcing fibers and the thermoplastic resin is widely known.
従来実施されている製造方法は、加熱炉の後方位置に引
き取り機を設置し、この引き取り機でストランド状強化
繊維を連続的に引き取り、粉体状熱可塑性樹脂の流動床
及び加熱炉を通過させるものである。The conventional manufacturing method is to install a take-up machine at the rear of the heating furnace, and use this take-up machine to continuously take the strand-shaped reinforcing fibers through a fluidized bed of powdered thermoplastic resin and the heating furnace. It is something.
この方法によれば、強化繊維のフィラメントが一方向に
引き揃えられた繊維強化複合材を得ることができるため
、曲げ強度の比較的高い繊維強化複合材を得ることがで
きる。ところが、上記したように強化繊維は張力がかか
った状態で粉体状熱可塑性樹脂中の流動床を通過するた
め強化繊維は充分開繊されていす、従って強化繊維の内
部にまで粉体状熱可塑性樹脂が侵入せず、製造された繊
維強化複合材の強度が不十分であった。According to this method, it is possible to obtain a fiber-reinforced composite material in which the reinforcing fiber filaments are aligned in one direction, so it is possible to obtain a fiber-reinforced composite material with relatively high bending strength. However, as mentioned above, since the reinforcing fibers pass through a fluidized bed of powdered thermoplastic resin under tension, the reinforcing fibers are sufficiently opened, so that the powdered heat reaches inside the reinforcing fibers. The plastic resin did not penetrate, and the strength of the manufactured fiber reinforced composite material was insufficient.
上記欠点を改善する方法として、特公昭５２−３９８５
号公報には、流動床中に螺条を切ったバーを複数本平行
に架設し、強化繊維をこのバーに交互に通すことにより
強化繊維を開繊して強化繊維の内部にまで熱可塑性樹脂
を侵入させる方法が提案され、特開昭５８−５０１９４
３号公報には流動床中に配設された複数のローラーの周
面に強化繊維を押し付けながら通過させることによって
、強化繊維の内部にまで熱可塑性樹脂を侵入させる方法
が提案され、さらに特開昭６３−２７０８号公報には流
動床中に架設された複数の湾曲バーの上下面に強化繊維
を交互に押し付けて強化繊維の幅を変化させながら通過
させることによって、強化繊維の内部にまで熱可塑性樹
脂を侵入させる方法が提案されている。As a method to improve the above drawbacks,
In the publication, a plurality of threaded bars are installed in parallel in a fluidized bed, and reinforcing fibers are passed through the bars alternately to spread the reinforcing fibers and inject thermoplastic resin into the inside of the reinforcing fibers. A method of infiltrating the
Publication No. 3 proposes a method of infiltrating a thermoplastic resin into the interior of reinforcing fibers by forcing the reinforcing fibers through a plurality of rollers disposed in a fluidized bed, and further disclosed in JP-A No. 3. Publication No. 63-2708 discloses that reinforcing fibers are alternately pressed against the upper and lower surfaces of a plurality of curved bars installed in a fluidized bed, and the reinforcing fibers are passed through while changing their width, thereby heating the inside of the reinforcing fibers. A method of infiltrating plastic resin has been proposed.
（発明が解決しようとする課題）
しかしながら、上記した方法はいずれも、強化繊維に張
力をかけた状態で機械的な開繊操作を行うものであり、
従って、開繊操作によってフィラメントと他の部材との
摩擦やフィラメント同志の摩擦等によるフィラメントの
切断が起こり易く、安定した操業が行えなかった。(Problems to be Solved by the Invention) However, in all of the above-mentioned methods, a mechanical opening operation is performed while tension is applied to the reinforcing fibers.
Therefore, during the opening operation, the filament is likely to be cut due to friction between the filament and other members, friction between filaments, etc., and stable operation cannot be performed.
本発明は上記欠点を解決するものであり、その目的とす
るところは、強化繊維のフィラメントが一方向に揃えら
れていると共に、強化繊維の内部にまで熱可塑性樹脂が
含浸されて強度の高い繊維強化複合材を得ることができ
、しがも安定した操業が行える繊維強化複合材の製造方
法を提供することにある。The present invention is intended to solve the above-mentioned drawbacks, and its purpose is to create high-strength fibers in which the filaments of reinforcing fibers are aligned in one direction, and the insides of the reinforcing fibers are impregnated with thermoplastic resin. It is an object of the present invention to provide a method for manufacturing a fiber reinforced composite material, which allows a reinforced composite material to be obtained and stable operation.
（課題を解決するための手段）
本発明の繊維強化複合材の製造方法は、多数の連続する
フィラメントより構成されるストランド状の強化繊維を
実質的に張力がかからない状態で流動化された粉体状熱
可塑性樹脂の中を通過させてフィラメント間に粉体状熱
可塑性樹脂を保持させ、次いで強化繊維に張力をかけた
状態で粉体状熱可塑性樹脂を加熱溶融させて強化繊維と
粉体状熱可塑性樹脂とを一体化することを特徴としてお
り、そのことにより上記目的が達成される。(Means for Solving the Problems) The method for producing a fiber-reinforced composite material of the present invention is a method for producing a fiber-reinforced composite material in which reinforcing fibers in the form of a strand composed of a large number of continuous filaments are fluidized in a state where no tension is applied to the powder. The thermoplastic resin powder is held between the filaments by passing through the thermoplastic resin, and then the thermoplastic resin powder is heated and melted while applying tension to the reinforcing fibers to form the reinforcing fibers and the thermoplastic resin powder. It is characterized by being integrated with a thermoplastic resin, thereby achieving the above object.
本発明の繊維強化複合材の他の製造方法は、多数の連続
する非導電性フィラメントより構成されるストランド状
の強化繊維を実質的に張力がかからない状態で、非導電
性の容器内で流動化された粉体状熱可塑性樹脂の中を通
過させてフィラメント間に粉体状熱可塑性樹脂を保持さ
せ、次いで強化繊維に張力をかけた状態で粉体状熱可塑
性樹脂を加熱溶融させて強化繊維と粉体状熱可塑性樹脂
とを一体化することを特徴としており、そのことにより
上記目的が達成される。Another method for producing the fiber-reinforced composite material of the present invention is to fluidize reinforcing fibers in the form of a strand consisting of a large number of continuous non-conductive filaments in a non-conductive container under substantially no tension. The powdered thermoplastic resin is passed through the filaments to hold the powdered thermoplastic resin between the filaments, and then the reinforcing fibers are heated and melted while tension is applied to the reinforcing fibers. It is characterized by integrating the thermoplastic resin and the powdered thermoplastic resin, thereby achieving the above object.
第１図は本発明に用いられる製造装置の一例を示したも
のである。FIG. 1 shows an example of a manufacturing apparatus used in the present invention.
この製造装置は、ストランド状の強化繊維１が巻回され
たロール１ａをセットする巻戻しロール１゜と、強化繊
維１を上下から挟持して図の矢印方向へ回転駆動するこ
とによりロール１ａから強化繊維１を巻戻すピンチロー
ル１１と、粉体状熱可塑性樹脂２が供給されている容器
２０と、容器２０を通過した強化繊維１を引き取るピン
チロール１２と、強化繊維ｌを所定幅に広げる押圧ロー
ル４０と、強化繊維１に保持された過剰の粉体状熱可塑
性樹脂２を除去してその保持量を一定とするスリッター
５０．５１と、強化繊維１に保持された上記粉体状熱可
塑性樹脂２を溶融させる遠赤外線加熱炉６０と、溶融し
た熱可塑性樹脂を押圧して強化繊維１と一体化させる加
熱ロール６１と、樹脂が保持された強化繊維１の端部を
引き取るピンチロール１３とを備えている。This manufacturing device consists of an unwinding roll 1° that sets a roll 1a on which a strand-shaped reinforcing fiber 1 is wound, and a rewinding roll 1° that holds the reinforcing fiber 1 from above and below and rotates it in the direction of the arrow in the figure. A pinch roll 11 that unwinds the reinforcing fiber 1, a container 20 in which powdered thermoplastic resin 2 is supplied, a pinch roll 12 that takes up the reinforcing fiber 1 that has passed through the container 20, and a pinch roll 12 that spreads the reinforcing fiber 1 to a predetermined width. A press roll 40, a slitter 50, 51 that removes the excess powder thermoplastic resin 2 retained on the reinforcing fibers 1 to maintain a constant amount of the retained thermoplastic resin 2, and A far-infrared heating furnace 60 that melts the plastic resin 2, a heating roll 61 that presses the molten thermoplastic resin to integrate it with the reinforcing fiber 1, and a pinch roll 13 that pulls off the end of the reinforcing fiber 1 holding the resin. It is equipped with
上記容器２０の底部には多数の通気孔２５．２５・・・
が設けられ、気体供給路２１から送られた気体がこの通
気孔２５を通って容器２０の内部へ送られるようになっ
ている。従って、容器２０内に入れられた粉体状熱可塑
性樹脂２は、その気体の噴出によって流動化した状態と
なり流動床２６が形成されている。The bottom of the container 20 has a large number of ventilation holes 25, 25...
is provided, and the gas sent from the gas supply path 21 is sent into the interior of the container 20 through this vent hole 25. Therefore, the thermoplastic resin powder 2 placed in the container 20 is fluidized by the jetting of the gas, and a fluidized bed 26 is formed.
容器２０の壁の上端部及び内部には、強化繊維１を案内
するガイドロール２２．２３．２４が配設されている。Guide rolls 22, 23, 24 for guiding the reinforcing fibers 1 are arranged at the upper end and inside the wall of the container 20.
上記ロール１ａとガイドロール２２との間に配設された
ピンチロール１１と、容器２０の強化繊維１の移動方向
側に配設されたピンチロール１２とは、はぼ同速度で回
転駆動するように構成されていて、両ピンチロール１１
．１２の間では強化繊維１に張力がかからないようにな
っている。また、両ピンチロール１１．１２の間には、
強化繊維１の張力を検出する張力検出機３１が配設され
、この張力検出機３１からの検出信号をピンチロール１
１及び／又は１２の駆動部に伝えてピンチロール１１及
び／又は１２の駆動速度を変更することで強化繊維ｌに
かかる張力を調節できるように構成されている。また、
ピンチロール１２と強化繊維ｌの端部を引き取るピンチ
ロール１３との間にも張力検出機３２が配設され、この
張力検出機３２からの検出信号をピンチロール１３に伝
えてピンチロール１３の駆動速度を変えることにより、
強化繊維１に作用する張力を調節できるように構成され
ている。The pinch roll 11 disposed between the roll 1a and the guide roll 22 and the pinch roll 12 disposed on the moving direction side of the reinforcing fibers 1 of the container 20 are driven to rotate at approximately the same speed. , both pinch rolls 11
．． 12, no tension is applied to the reinforcing fibers 1. Also, between both pinch rolls 11 and 12,
A tension detector 31 is provided to detect the tension of the reinforcing fiber 1, and a detection signal from the tension detector 31 is sent to the pinch roll 1.
1 and/or 12 to change the driving speed of the pinch rolls 11 and/or 12, the tension applied to the reinforcing fibers 1 can be adjusted. Also,
A tension detector 32 is also disposed between the pinch roll 12 and the pinch roll 13 that takes off the end of the reinforcing fiber l, and a detection signal from the tension detector 32 is transmitted to the pinch roll 13 to drive the pinch roll 13. By changing the speed,
It is configured so that the tension acting on the reinforcing fibers 1 can be adjusted.
次に、上記製造装置を用いて本発明の製造方法を説明す
る。Next, the manufacturing method of the present invention will be explained using the above manufacturing apparatus.
強化繊維ｌの端部は流動床２６の前後に配設されたピチ
ロール１１．１２で引き取られ、ロール１ａの外側より
撚りがかからないように順次巻戻される。The ends of the reinforcing fibers 1 are taken up by piti rolls 11 and 12 disposed before and after the fluidized bed 26, and are sequentially rewound from the outside of the roll 1a so as not to be twisted.
そして、強化繊維１は張力がかからない状態で容器２０
内へ導かれる。容器２０内では通気孔２５から気体が噴
出されていて粉体状熱可塑性樹脂２の流動床２６が形成
され、また強化繊維１は開繊され易い状態であるので、
その気体の勢いによって強化繊維１はフィラメント状に
開繊され、その開繊されたフィラメント間に粉体状熱可
塑性樹脂２は侵入して保持される。Then, the reinforcing fiber 1 is placed in the container 20 in a state where no tension is applied.
guided inward. Inside the container 20, gas is ejected from the vent holes 25, forming a fluidized bed 26 of the powdered thermoplastic resin 2, and the reinforcing fibers 1 are in a state where they are easily opened.
The reinforcing fibers 1 are opened into filaments by the force of the gas, and the powdered thermoplastic resin 2 enters and is held between the opened filaments.
流動床２６を通過し、ピンチロール１２により送り出さ
れた粉体状熱可塑性樹脂２を有する強化繊維１は、次に
押圧ロール４０で押え付けられながら通過することで一
定幅の帯状に広げられ、引き続いて強化繊維１がスリッ
ター５０．５１の上下面を通過する際に過剰の粉体状熱
可”塑性樹脂２が除去されてその保持量が一定とされる
。上記押圧ロール４゜の強化繊維１に対する押圧力及び
角度を変更することにより、薄帯状に広げる強化繊維１
の幅を変化させて最終製品における繊維強化複合材の強
化繊維１と熱可塑性樹脂との比率を調整することができ
る。引き続いて、上記粉体状熱可塑性樹脂２が所定量保
持された強化繊維１を張力でかけた状態で遠赤外線加熱
炉６０に供給して、ここで加熱することにより粉体状熱
可塑性樹脂を溶融し、加熱ロール６１を通過させ、溶融
した樹脂を上下両面から押圧することによって樹脂同志
及び溶融した樹脂と強化繊維１とを一体化して薄帯状プ
リプレグの形態で繊維強化複合材が得られる。The reinforcing fibers 1 having the powdered thermoplastic resin 2 passed through the fluidized bed 26 and sent out by the pinch rolls 12 are then spread out into a belt shape of a constant width by passing through the press rolls 40 while being pressed. Subsequently, when the reinforcing fibers 1 pass through the upper and lower surfaces of the slitters 50 and 51, excess powdery thermoplastic resin 2 is removed and the retained amount thereof is kept constant. By changing the pressing force and angle with respect to 1, the reinforcing fiber 1 is spread into a thin strip shape.
The ratio of the reinforcing fibers 1 of the fiber-reinforced composite material to the thermoplastic resin in the final product can be adjusted by changing the width of the fiber-reinforced composite material. Subsequently, the reinforcing fiber 1 holding a predetermined amount of the thermoplastic resin powder 2 is supplied under tension to the far-infrared heating furnace 60 and heated there to melt the thermoplastic resin powder. Then, by passing the heated roll 61 and pressing the molten resin from both upper and lower surfaces, the resins and the molten resin are integrated with the reinforcing fibers 1 to obtain a fiber-reinforced composite material in the form of a ribbon-like prepreg.
上記張力は熱可塑性樹脂の種類、量等により適宜決定さ
れればよいが、一般に２〜５０ｋｇ テアリ、好ましく
は５〜３０ｋｇである。The tension may be appropriately determined depending on the type, amount, etc. of the thermoplastic resin, but is generally 2 to 50 kg, preferably 5 to 30 kg.
本発明で用いられるストランド状の連続した強化繊維１
としては、ガラス繊維、炭素繊維、金属繊維等の無機繊
維、アラミド繊維、ポリエステル繊維、ポリアミド繊維
等の有機繊維であって、通常繊維径２〜４０μ国のフィ
ラメントを数百〜数十力木同方向に束ねて構成されるス
トランド状の連続する繊維が用いられる。ヤーン状のも
のを多数用いることもできる。また、強化繊維１は樹脂
との接着強度を向上させるために通常行われるサイジン
グ処理が施されていても良い。また、使用する粉体状熱
可塑性樹脂の溶融温度において熱的に安定な繊維が選ば
れる。Strand-shaped continuous reinforcing fiber 1 used in the present invention
Examples include inorganic fibers such as glass fibers, carbon fibers, and metal fibers, and organic fibers such as aramid fibers, polyester fibers, and polyamide fibers, and the filaments are usually 2 to 40 μm in diameter and are made of several hundred to several dozen fibers. Continuous fibers in the form of strands that are bundled in different directions are used. A large number of yarn-like materials can also be used. Further, the reinforcing fiber 1 may be subjected to a commonly performed sizing treatment in order to improve the adhesive strength with the resin. In addition, fibers are selected that are thermally stable at the melting temperature of the powdered thermoplastic resin used.
本発明で用いられる粉体状熱可塑性樹脂２は、ポリエチ
レン、ポリプロピレン、ポリ塩化ビニル、ポリスルホン
、ポリアミド、ポリフッ化ビニリデン、ポリフェニレン
サルファイド、ポリエーテルエーテルケトン等の熱によ
り軟化溶融する樹脂が総て使用可能である。また、これ
らの熱可塑性樹脂の混合物も使用し得る。安定剤、潤滑
剤、加工助剤、可塑剤、染料、顔料のような添加剤を、
熱可塑性樹脂に混合して用いても良い。この粉体状熱可
塑性樹脂の平均粒子径は、１〜１０００μｍが好ましい
。粉体状熱可塑性樹脂の平均粒子径がｉｏｏ。The powdered thermoplastic resin 2 used in the present invention can be any resin that softens and melts with heat, such as polyethylene, polypropylene, polyvinyl chloride, polysulfone, polyamide, polyvinylidene fluoride, polyphenylene sulfide, polyether ether ketone, etc. It is. Mixtures of these thermoplastics may also be used. additives such as stabilizers, lubricants, processing aids, plasticizers, dyes and pigments,
It may be used by mixing it with a thermoplastic resin. The average particle diameter of this powdery thermoplastic resin is preferably 1 to 1000 μm. The average particle size of the powdered thermoplastic resin is ioo.
μｍを上回ると流動床中での粉体の流動が好適に起こら
ず、ストランド状の連続強化繊維のフィラメント間への
熱可塑性樹脂の保持量が低下する傾向にある。When it exceeds μm, the powder does not flow properly in the fluidized bed, and the amount of thermoplastic resin retained between the filaments of the strand-shaped continuous reinforcing fibers tends to decrease.
さらに、上記容器２０に繊維状微小充填材を供給して強
化繊維１のフィラメント間に粉体状熱可塑性樹脂２とと
もに微小充填材を侵Δ保持させても良い、この微小充填
材としては、ガラス繊維、炭素繊維等の無機繊維のミル
ドファイバー、あるいは窒化ケイ素、炭化ケイ素、チタ
ン酸カリウム等のウィスカーが好適に用いられる。この
ように、微小充填材を強化繊維１のフィラメント間に保
持させることにより、ランダムに配向する微小充填材に
よって製造される繊維強化複合材の繊維間の強度を上げ
ることができ、強化繊維１の長手方向に沿った割れ等を
防止することができる。Further, a fibrous fine filler may be supplied to the container 20 to hold the fine filler in contact with the powdered thermoplastic resin 2 between the filaments of the reinforcing fibers 1. As this fine filler, glass may be used. Fibers, milled fibers of inorganic fibers such as carbon fibers, or whiskers of silicon nitride, silicon carbide, potassium titanate, etc. are preferably used. In this way, by holding the microfiller between the filaments of the reinforcing fibers 1, it is possible to increase the strength between the fibers of the fiber-reinforced composite material manufactured by the randomly oriented microfillers. Cracks along the longitudinal direction can be prevented.
この繊維状微小充填材の平均アスペクト比（Ｌ／Ｄ）は
５以上であるのが好ましい、平均アスペクト比が５を下
回ると、繊維状としての機能がなくなり、強化繊維ｌの
幅及び厚み方向に対する強度が充分得られない、また、
繊維状微小充填材の繊維長は１０〜１０００μｍの範囲
が好ましい、繊維長が１０００μｍを上回ると、流動床
２６中での粉体の流動が好適に起こらず、ストランド状
の強化繊維１のフィラメント間に繊維状微小充填材が充
分保持されない。It is preferable that the average aspect ratio (L/D) of this fibrous microfiller is 5 or more. If the average aspect ratio is less than 5, the fibrous function will be lost, and the Insufficient strength, or
The fiber length of the fibrous microfiller is preferably in the range of 10 to 1000 μm. If the fiber length exceeds 1000 μm, the powder will not flow properly in the fluidized bed 26, and the fibers between the filaments of the strand-shaped reinforcing fibers 1 will not flow properly. The fibrous microfiller is not retained sufficiently.
１０μｍを下回ると繊維状としての機能がなくなり、繊
維強化複合材の幅及び厚み方向に対する強度が充分得ら
れない。繊維状微小充填材は、粉体状熱可塑性樹脂と繊
維状微小充填材の混合組成物２中において、１〜３０容
量％の範囲で含有されるのが良い、１容量％を下回ると
、繊維状微小充填材の添加効果が小さいため繊維強化複
合材の幅及び厚み方向に対する強度が充分得られず、
３０容量％を上回ると、熱可塑性樹脂の結合力が低下し
、強化繊維１への熱可塑性樹脂の含浸性が損なわれる傾
向にある。If it is less than 10 μm, it loses its fibrous function, and the fiber-reinforced composite material cannot have sufficient strength in the width and thickness directions. The fibrous microfiller is preferably contained in the range of 1 to 30% by volume in the mixed composition 2 of powdered thermoplastic resin and fibrous microfiller.If it is less than 1% by volume, the fiber Because the effect of adding microfillers is small, sufficient strength in the width and thickness directions of the fiber-reinforced composite material cannot be obtained, and if it exceeds 30% by volume, the bonding strength of the thermoplastic resin decreases and The impregnating properties of the plastic resin tend to be impaired.
上記流動床２６を形成するための気体としては、通常空
気が用いられ、コンプレッサーやブロアー等から供給さ
れるのが良い。必要に応じて窒素、二酸化炭素、ヘリウ
ム、アルゴン等の不活性気体が用いられる。Air is usually used as the gas for forming the fluidized bed 26, and is preferably supplied from a compressor, blower, or the like. An inert gas such as nitrogen, carbon dioxide, helium, or argon is used as necessary.
本発明の他の製造方法においては、強化繊維工として、
非導電性フィラメントより構成されるストランド状の強
化繊維を使用し、非導電性の容器２０内で非導電性の粉
体状熱可塑性樹脂を流動化させて、この流動床２６中を
上記強化繊維１を通過させることにより、粉体状熱可塑
性樹脂２の強化繊維１への保持量を増大させたものであ
る。すなわち、非導電性の容器２０内に粉体状熱可塑性
樹脂を投入して流動床２６を形成することにより、静電
気が発生して粉体状熱可塑性樹脂２及び強化繊維１が帯
電し、強化繊維１のフィラメントはその静電気によって
互いに反発して開繊されることとなり、フィラメント間
に流動する粉体状熱可塑性樹脂が容易に侵入し易くなる
のである。In another manufacturing method of the present invention, as a reinforcing fiber process,
Using strand-shaped reinforcing fibers made of non-conductive filaments, a non-conductive powder thermoplastic resin is fluidized in a non-conductive container 20, and the reinforcing fibers are passed through the fluidized bed 26. 1, the amount of the powdered thermoplastic resin 2 retained in the reinforcing fibers 1 is increased. That is, by charging powdered thermoplastic resin into a non-conductive container 20 to form a fluidized bed 26, static electricity is generated and the powdered thermoplastic resin 2 and reinforcing fibers 1 are charged and reinforced. The filaments of the fiber 1 repel each other due to the static electricity and are opened, allowing the powdered thermoplastic resin flowing between the filaments to easily enter.
従って、使用される強化繊維１としては上記で挙げたも
ののうち、ガラス繊維、アラミド繊維、ポリエステル繊
維、ポリアミド繊維等の非導電性繊維が用いられる。ま
た、容器２ｏ内に直流高電圧を付与した電極を配置して
、積極的に粉体状熱可塑性樹脂２を帯電させるようにし
ても良い。Therefore, the reinforcing fibers 1 used include non-conductive fibers such as glass fibers, aramid fibers, polyester fibers, and polyamide fibers among those listed above. Alternatively, an electrode to which a DC high voltage is applied may be placed inside the container 2o to actively charge the powdered thermoplastic resin 2.
さらに、粉体状熱可塑性樹脂２の保持量を調整した後、
強化繊維１を粉体状熱可塑性樹脂２の溶融温度以上の温
度に加熱された所望形状のスリットを有する金型中を通
過させることにより、粉体状熱可塑性樹脂２と強化繊維
１とを一体化させつつ所望の横断面形状を有する長尺の
繊維強化複合材を得ても良い。Furthermore, after adjusting the amount of retained thermoplastic resin powder 2,
By passing the reinforcing fiber 1 through a mold having a slit of a desired shape and heated to a temperature higher than the melting temperature of the powdered thermoplastic resin 2, the powdered thermoplastic resin 2 and the reinforcing fiber 1 are integrated. It is also possible to obtain a long fiber-reinforced composite material having a desired cross-sectional shape.
本発明によれば、フィラメントが一方向に配向している
ため、特に曲げ強度の高い繊維強化複合材が得られる。According to the present invention, since the filaments are oriented in one direction, a fiber-reinforced composite material with particularly high bending strength can be obtained.
また、強化繊維１は充分開繊された状態でそのフィラメ
ント間に粉体状熱可塑性樹脂が侵入保持されるので、強
化繊維１の周囲だけでなく内部にまで樹脂が含浸した強
度の高い繊維強化複合材が得られると共に、従来のよう
に強化繊維１を張力がかかった状態で機械的に開繊する
こともなく、フィラメントの切断の少ない強度の高い繊
維強化複合材が得られる。In addition, since the powdered thermoplastic resin enters and is retained between the filaments of the reinforcing fibers 1 in a sufficiently opened state, the reinforcing fibers 1 are reinforced with high-strength fibers impregnated with resin not only around the periphery but also inside the reinforcing fibers 1. A composite material is obtained, and a fiber-reinforced composite material with high strength and less filament breakage can be obtained without mechanically opening the reinforcing fibers 1 under tension as in the conventional method.
このようにして得られた熱成形性複合材料は、種々の形
状に成形することができ、単独であるいは複数枚を積層
し、又は他の部材と積層して板材、管等に用いることが
できる。The thermoformable composite material obtained in this way can be molded into various shapes, and can be used alone, in layers, or in layers with other members to make plates, pipes, etc. .
（実施例） 以下に本発明を実施例に基づいて詳細に説明する。(Example) The present invention will be explained in detail below based on examples.
１覇」ロー
く使用材料〉
ストランド状の強化繊維としてガラス繊維ロービング（
フィラメント径２２μｍ 、４４００ｇ／ｋｍ）を用い
、粉体状熱可塑性樹脂としてナイロン−６（平均粒子径
８０ｕｒＲ）を用いた。1st place” Materials used: Glass fiber roving (as a strand-like reinforcing fiber)
Nylon-6 (average particle size: 80 urR) was used as the powdered thermoplastic resin.
〈製造条件〉
第１図に示した装置を用いて以下の条件で薄帯状の繊維
強化複合材（プリプレグとも称される）を製造した。容
器２０は硬質ポリ塩化ビニル製のものを用い、容器２０
内に上記粉体状熱可塑性樹脂２を投入し、コンプレッサ
ーにより容器２０底部の通気孔２５から容器２０内へ空
気を噴出させて流動床２６を形成した。<Manufacturing Conditions> A ribbon-shaped fiber-reinforced composite material (also referred to as prepreg) was manufactured using the apparatus shown in FIG. 1 under the following conditions. The container 20 is made of hard polyvinyl chloride.
The thermoplastic resin powder 2 was put into the container, and air was blown into the container 20 from the vent hole 25 at the bottom of the container 20 using a compressor to form a fluidized bed 26.
ピンチロール１１の駆動により予め４０ｃｍのストラン
ド１を流動床２６に送り込んだ後、ピンチロール１２．
１３を駆動させた。ピンチロール１１．１２は１５０ｃ
ｍ／ｗｉｎの一定速度でストランド１を引き取るように
設定した。また、ピンチロール１３は張力検出機３２と
連動してストランド１に約１０ｋｇの張力が常にかかる
ようにその引き取り速度を調節した。After feeding the 40 cm strand 1 into the fluidized bed 26 in advance by driving the pinch roll 11, the pinch roll 12.
13 was driven. Pinch roll 11.12 is 150c
The strand 1 was set to be taken at a constant speed of m/win. Further, the pinch roll 13 was operated in conjunction with the tension detector 32 to adjust its take-up speed so that a tension of about 10 kg was always applied to the strand 1.
ストランド１を張力がほとんどかからない状態で流動床
２６を通過させてフィラメント間に粉体状熱可塑性樹脂
２を保持させた後、ロール４０上で幅約４ＣＩに広げ、
スリッター５０．５１で上下面に保持された過剰の粉体
状熱可塑性樹脂２を除去した。The strand 1 is passed through the fluidized bed 26 with almost no tension applied to hold the powdered thermoplastic resin 2 between the filaments, and then spread on a roll 40 to a width of about 4 CI.
Excess powdered thermoplastic resin 2 held on the upper and lower surfaces was removed using slitters 50 and 51.
引き続いて、表面温度約３８０°Ｃに設定された遠赤外
線ヒーターを有する加熱炉６０中を通過させ粉体状熱可
塑性樹脂２を溶融させた後、表面温度２２５゛Ｃに設定
された加熱ロール６１を通過させ、ストランド１と樹脂
とを一体化させつつ引き取り、幅約４０園、厚み約０．
２ ！Ｉｎの薄帯状の繊維強化複合材を得た。Subsequently, the thermoplastic resin powder 2 is melted by passing through a heating furnace 60 having a far-infrared heater whose surface temperature is set to about 380°C, and then heated to a heating roll 61 whose surface temperature is set to 225°C. The strand 1 and the resin are integrated with each other and taken out, and the width is about 40 mm and the thickness is about 0.0 mm.
2! A thin strip-shaped fiber-reinforced composite material of In was obtained.
得られた繊維強化複合材は、ガラス繊維含有量が３５重
景％でフィラメントが一方向に良く配向し、かつフィラ
メント間に樹脂が良く含浸したものであった。また、上
記製造操作を５時間連続して実施したが、フィラメント
の切断によるトラブルは発生せず安定した操業が行えた
。The obtained fiber-reinforced composite material had a glass fiber content of 35%, the filaments were well oriented in one direction, and the resin was well impregnated between the filaments. Further, although the above manufacturing operation was carried out continuously for 5 hours, stable operation was possible without any trouble due to filament cutting.
得られた繊維強化複合材を数枚積層してプレス成形によ
り厚み３．２ ａｍの一方向強化板を得、この強化板の
曲げ試験を行ったところ、曲げ強度は６０ｋｇ／ｍｍ”
であった・
大施皿主
く使用材料〉
ストランド状の強化繊維としてガラス繊維ロービング（
フィラメント径２２μｍ 、 ４４００ｇ／ｋｍ）を用
い、粉体状熱可塑性樹脂として下記組成の配合物から生
成した平均粒子径３００μｍの粉末を用いた。Several sheets of the obtained fiber-reinforced composite material were laminated and press-molded to obtain a unidirectionally reinforced plate with a thickness of 3.2 am, and when a bending test was performed on this reinforced plate, the bending strength was 60 kg/mm.
The main material used in the large construction plate was glass fiber roving (as a strand-shaped reinforcing fiber).
A filament with a diameter of 22 μm and a weight of 4,400 g/km was used, and a powder with an average particle size of 300 μm produced from a compound having the following composition was used as the powdered thermoplastic resin.
塩化ビニル樹脂（重合度８００）・・・１００重量部ブ
チル錫含硫黄系安定剤 ・・・ ３重量部ステアリル
アルコール ・・・ １重量部ポリオレフィンワッ
クス ・・・ １重量部〈製造条件〉
実施例１と同様に、容器２０内に流動床２６を形成した
装置を用い、以下の条件で薄帯状の繊維強化複合材を製
造した。Vinyl chloride resin (degree of polymerization 800)...100 parts by weight Butyltin sulfur-containing stabilizer...3 parts by weight Stearyl alcohol...1 part by weight Polyolefin wax...1 part by weight <Manufacturing conditions> Example 1 Similarly, using an apparatus in which a fluidized bed 26 was formed in a container 20, a ribbon-shaped fiber-reinforced composite material was manufactured under the following conditions.
ピンチロール１工により予め４０ｃｍのストランド１を
流動床２６に送り込んだ後、ピンチロール１２、】３を
駆動させた。ピンチロール１１．１２は１５０ ｃｍ／
ｍｉｎの一定速度でストランド１を引き取るように設定
した。また、ピンチロール１３は張力検出機３２と連動
してストランドｌに約１５ｋｇの張力が常にかかるよう
に引き取り速度を調節した。After feeding the 40 cm strand 1 into the fluidized bed 26 using the pinch roll 1, the pinch rolls 12 and 3 were driven. Pinch roll 11.12 is 150 cm/
Strand 1 was set to be taken at a constant speed of min. Further, the pinch roll 13 was linked to the tension detector 32 to adjust the take-up speed so that a tension of about 15 kg was always applied to the strand l.
ストランド１に張力がほとんどかからない状態で、この
ストランド１を流動床２６を通過させてフィラメント間
に粉体状熱可塑性樹脂２を保持させた後、ロール４０上
で幅約３ｃＩＩ＋に広げ、スリッター５０．５１で上下
面に保持された過剰の粉体状熱可塑性樹脂２を除去した
。引き続いて、表面温度約３４０°Ｃに設定された遠赤
外線ヒーターを有する加熱炉６０中を通過させ粉体状熱
可塑性樹脂２を溶融させた後、表面温度１９０″Ｃに設
定された加熱ロール６１を通過させ、ストランド１と粉
体状熱可塑性樹脂２とを一体化させつつ引き取り、幅約
３０鵬、厚み約０．３ ｍｍＯｍ帯薄の繊維強化複合材
を得た。With almost no tension being applied to the strand 1, the strand 1 is passed through a fluidized bed 26 to hold the powdered thermoplastic resin 2 between the filaments, and then spread on a roll 40 to a width of approximately 3 cII+, and passed through a slitter 50. At step 51, the excess powdered thermoplastic resin 2 retained on the upper and lower surfaces was removed. Subsequently, the powdered thermoplastic resin 2 is melted by passing through a heating furnace 60 having a far-infrared heater whose surface temperature is set to about 340°C, and then heated to a heating roll 61 whose surface temperature is set to 190″C. The strand 1 and the powdered thermoplastic resin 2 were passed through and taken off while being integrated, to obtain a thin fiber-reinforced composite material with a width of about 30mm and a thickness of about 0.3mmOm.
得られた繊維強化複合材はガラス繊維含有量が３０重量
％でフィラメントが一方向に良（配向し、かつフィラメ
ント間に樹脂が良く含浸したものであった。また、上記
製造操作を５時間連続して実施したが、フィラメントの
切断によるトラブルは発生せず、安定した操業が行えた
。The obtained fiber-reinforced composite material had a glass fiber content of 30% by weight, the filaments were well oriented in one direction, and the resin was well impregnated between the filaments.The above manufacturing operation was continued for 5 hours. However, there were no troubles due to filament breakage, and stable operation was achieved.
得られた繊維強化複合材を数枚積層してプレス成形によ
り厚み３．０ ｍｍの一方向強化板を得、この強化板の
曲げ試験を行ったところ、曲げ強度は４０ｋｇ／ａｍ”
であった。Several sheets of the obtained fiber-reinforced composite material were laminated and press-molded to obtain a unidirectionally reinforced plate with a thickness of 3.0 mm. When a bending test was performed on this reinforced plate, the bending strength was 40 kg/am.
Met.
裏旌五主
〈使用材料〉
ストランド状の強化繊維としてＰＡＮ系炭素炭素繊維ス
トランドィラメント径８ ｕ １ｍ 、フィラメント数
６０００本）を用い、粉体状熱可塑性樹脂としてポリフ
ッ化ぐニリデン樹脂（重合度１１００、平均粒子径２０
０μｍ）を用いた。Urajo Goshu <Materials used> PAN-based carbon fiber strand filament diameter 8 u 1 m, number of filaments 6000) is used as the strand-shaped reinforcing fiber, and polyfluorinated nylidene resin (polymerization degree 1100) is used as the powdered thermoplastic resin. , average particle size 20
0 μm) was used.
く製造条件〉
実施例１と同様に、容器２０内に流動床２６を形成した
装置を用い、以下の条件で薄帯状の繊維強化複合材を製
造した。Manufacturing Conditions> As in Example 1, a ribbon-shaped fiber reinforced composite material was manufactured under the following conditions using an apparatus in which a fluidized bed 26 was formed in a container 20.
ピンチロール１１により予め３０ｃａ＋のストランド１
を流動床２６に送り込んだ後、ピンチロール１２．１３
を駆動させた。ピンチロール１１．１２は１２０ ｃｍ
／Ｉｆｉｉｎの一定速度でストランド１を引き取るよう
に設定した。また、ピンチロール１３は張力検出機３２
と連動してストランドｌに約８ｋｇの張力が常にかかる
ように引き取り速度を調節した。Strand 1 of 30ca+ in advance by pinch roll 11
After feeding into the fluidized bed 26, pinch rolls 12.13
was driven. Pinch roll 11.12 is 120 cm
Strand 1 was set to be taken at a constant speed of /Ifin. In addition, the pinch roll 13 is connected to a tension detector 32.
In conjunction with this, the take-up speed was adjusted so that a tension of approximately 8 kg was constantly applied to the strand L.
ストランド１に張力がほとんどかからない状態で、この
ストランドｌを流動床２６を通過させてフィラメント間
に粉体状熱可塑性樹脂２を保持させた後、ロール４０上
で幅約２ｃ＋ａに広げ、スリッター５０．５１で上下面
に保持された過剰の粉体状熱可塑性樹脂２を除去した。With almost no tension being applied to the strand 1, the strand 1 is passed through a fluidized bed 26 to hold the powdered thermoplastic resin 2 between the filaments, then spread on a roll 40 to a width of about 2c+a, and passed through a slitter 50. At step 51, the excess powdered thermoplastic resin 2 retained on the upper and lower surfaces was removed.
引き続いて、表面温度約３５０°Ｃに設定された遠赤外
線ヒーターを有する加熱炉６０中を通過させ粉体状熱可
塑性樹脂２を溶融させた後、表面温度２１０°Ｃに設定
された加熱ロール６１を通過させ、ストランド１と粉体
状熱可塑性樹脂２とを一体化させつつ引き取り、幅約２
０ｍｍ、厚み約０．３ｍの薄帯状の繊維強化複合材を得
た。Subsequently, the thermoplastic resin powder 2 is melted by passing through a heating furnace 60 having a far-infrared heater whose surface temperature is set to about 350°C, and then heated to a heating roll 61 whose surface temperature is set to 210°C. The strand 1 and the powdered thermoplastic resin 2 are integrated and taken off, and the width is about 2.
A fiber-reinforced composite material in the form of a thin ribbon having a diameter of 0 mm and a thickness of approximately 0.3 m was obtained.
得られた繊維強化複合材は炭素繊維含有量が２０重量％
でフィラメントが一方向に良く配向し、かつフィラメン
ト間に樹脂が良く含浸したものであった。また、上記製
造操作を５時間連続して実施したが、フィラメントの切
断によるトラブルは発生せず、安定した操業が行えた。The resulting fiber-reinforced composite material has a carbon fiber content of 20% by weight.
The filaments were well oriented in one direction, and the resin was well impregnated between the filaments. Furthermore, although the above manufacturing operation was carried out continuously for 5 hours, no troubles due to filament cutting occurred, and stable operation was possible.
得られた繊維強化複合材を数枚積層してプレス成形によ
り厚み２．０Ｍの一方同強化板を得、この強化板の曲げ
試験を行ったところ、曲げ強度は８０ｋｇ／ｍｍ”であ
った。Several sheets of the obtained fiber-reinforced composite material were laminated and press-molded to obtain a reinforcing plate having a thickness of 2.0 M. When a bending test was performed on this reinforcing plate, the bending strength was 80 kg/mm''.
北較■
く使用材料〉
実施例２と同様の強化繊維と粉体状熱可塑性樹脂を用い
た。Materials used> The same reinforcing fibers and powdered thermoplastic resin as in Example 2 were used.
〈製造条件〉
第１図に示した製造装置において、ピンチロール１２を
取り外し、流動床２６を通過するストランド１に約３ｋ
ｇの張力がかかるようにした以外は、実施例２と同様の
条件で薄帯状の繊維強化複合材を製造した。<Manufacturing conditions> In the manufacturing apparatus shown in FIG.
A ribbon-shaped fiber-reinforced composite material was produced under the same conditions as in Example 2, except that a tension of g was applied.
得られた繊維強化複合材はガラス繊維含有量が６０重量
％でフィラメントは一方向に良く配向したものであった
が、フィラメント間に樹脂が充分含浸していないもので
あった。Although the resulting fiber-reinforced composite material had a glass fiber content of 60% by weight and the filaments were well oriented in one direction, the resin was not sufficiently impregnated between the filaments.
得られた繊維強化複合材を数枚積層してプレス成形によ
り厚み３飾の一方向強化板を得、この強化板の曲げ試験
を行ったところ、曲げ強度は１４ｋｇ／ｍｍ”であった
。Several sheets of the obtained fiber-reinforced composite material were laminated and press-molded to obtain a unidirectional reinforced plate with a thickness of 3 decorations, and when a bending test was performed on this reinforced plate, the bending strength was 14 kg/mm''.
（発明の効果）
このように本発明の製造方法によれば、強化繊維のフィ
ラメントが一方向に揃えられており、また粉体状熱可塑
性樹脂の含浸性を高めることができて強度の高い繊維強
化複合材を得ることができると共に、従来のように強化
繊維に粉体状熱可塑性樹脂を保持させるための機械的な
開繊操作を必要とせず、フィラメントの切断がほとんど
起こらない安定した操業が行える。特に、非導電性の強
化繊維及び容器を使用して容器内で静電気を発生させる
ようにすると、強化繊維を充分開繊させることができ、
樹脂の含浸性を一層高めることができる。(Effects of the Invention) As described above, according to the manufacturing method of the present invention, the filaments of the reinforcing fibers are aligned in one direction, and the impregnating property of the powdered thermoplastic resin can be improved, resulting in high-strength fibers. In addition to being able to obtain reinforced composite materials, there is no need for conventional mechanical opening operations to retain the powdered thermoplastic resin in the reinforcing fibers, and stable operation with almost no filament breakage is possible. I can do it. In particular, by using non-conductive reinforcing fibers and a container to generate static electricity within the container, the reinforcing fibers can be opened sufficiently.
The impregnating properties of the resin can be further improved.
゛の なｉ′ ■
第１図は本発明に用いる製造装置の一実施例を示す概略
図である。Figure 1 is a schematic diagram showing one embodiment of the manufacturing apparatus used in the present invention.
１・・・強化繊維、２・・・粉体状熱可塑性樹脂、１１
．１２．１３・・・ピンチロール、２０・・・容器、２
６・・・流動床。1... Reinforcing fiber, 2... Powdered thermoplastic resin, 11
．． 12.13...pinch roll, 20...container, 2
6... Fluidized bed.
以上that's all
Claims (1)
ンド状の強化繊維を実質的に張力がかからない状態で流
動化された粉体状熱可塑性樹脂の中を通過させてフィラ
メント間に粉体状熱可塑性樹脂を保持させ、次いで強化
繊維に張力をかけた状態で粉体状熱可塑性樹脂を加熱溶
融させて強化繊維と粉体状熱可塑性樹脂とを一体化する
ことを特徴とする繊維強化複合材の製造方法。 ２、多数の連続する非導電性フィラメントより構成され
るストランド状の強化繊維を実質的に張力がかからない
状態で、非導電性の容器内で流動化された粉体状熱可塑
性樹脂の中を通過させてフィラメント間に粉体状熱可塑
性樹脂を保持させ、次いで強化繊維に張力をかけた状態
で粉体状熱可塑性樹脂を加熱溶融させて強化繊維と粉体
状熱可塑性樹脂とを一体化することを特徴とする繊維強
化複合材の製造方法。[Claims] 1. A reinforcing fiber in the form of a strand consisting of a large number of continuous filaments is passed through a fluidized powder thermoplastic resin under substantially no tension between the filaments. The method is characterized by holding the thermoplastic resin powder, and then heating and melting the thermoplastic resin powder while applying tension to the reinforcing fibers to integrate the reinforcing fibers and the thermoplastic resin powder. Method for manufacturing fiber reinforced composite material. 2. A reinforcing fiber in the form of a strand consisting of a large number of continuous non-conductive filaments is passed through a fluidized powdered thermoplastic resin in a non-conductive container under virtually no tension. The thermoplastic resin powder is held between the filaments by heating, and then the thermoplastic resin powder is heated and melted while applying tension to the reinforcing fibers to integrate the reinforcing fibers and the thermoplastic resin powder. A method for producing a fiber-reinforced composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63316707A JPH02160511A (en) | 1988-12-15 | 1988-12-15 | Production of fiber reinforced composite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63316707A JPH02160511A (en) | 1988-12-15 | 1988-12-15 | Production of fiber reinforced composite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02160511A true JPH02160511A (en) | 1990-06-20 |
Family
ID=18080006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63316707A Pending JPH02160511A (en) | 1988-12-15 | 1988-12-15 | Production of fiber reinforced composite |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02160511A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2020255786A1 (en) * | 2019-06-18 | 2020-12-24 |
-
1988
- 1988-12-15 JP JP63316707A patent/JPH02160511A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2020255786A1 (en) * | 2019-06-18 | 2020-12-24 | ||
| WO2020255786A1 (en) * | 2019-06-18 | 2020-12-24 | 三井化学株式会社 | Unidirectional fiber-reinforced resin sheet, and layered body and automobile member including same |
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