JPH10119139A - Intermediate member of continuous rod-shaped molding, production thereof, molding an molding method therefor - Google Patents
Intermediate member of continuous rod-shaped molding, production thereof, molding an molding method thereforInfo
- Publication number
- JPH10119139A JPH10119139A JP8298051A JP29805196A JPH10119139A JP H10119139 A JPH10119139 A JP H10119139A JP 8298051 A JP8298051 A JP 8298051A JP 29805196 A JP29805196 A JP 29805196A JP H10119139 A JPH10119139 A JP H10119139A
- Authority
- JP
- Japan
- Prior art keywords
- reinforcing fiber
- molded product
- continuous rod
- shaped molded
- product intermediate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000465 moulding Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 17
- 238000004519 manufacturing process Methods 0.000 title description 7
- 239000012783 reinforcing fiber Substances 0.000 claims abstract description 91
- 229920005989 resin Polymers 0.000 claims abstract description 58
- 239000011347 resin Substances 0.000 claims abstract description 58
- 239000000835 fiber Substances 0.000 claims abstract description 47
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 38
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 34
- 239000004917 carbon fiber Substances 0.000 claims abstract description 34
- 239000011159 matrix material Substances 0.000 claims abstract description 26
- 238000004804 winding Methods 0.000 claims abstract description 15
- 239000000047 product Substances 0.000 claims description 71
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 6
- 239000002759 woven fabric Substances 0.000 claims description 4
- 239000013067 intermediate product Substances 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims 1
- 239000000543 intermediate Substances 0.000 description 77
- 239000003822 epoxy resin Substances 0.000 description 15
- 229920000647 polyepoxide Polymers 0.000 description 15
- 239000000203 mixture Substances 0.000 description 10
- 230000003014 reinforcing effect Effects 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 9
- 239000002184 metal Substances 0.000 description 5
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 229920005992 thermoplastic resin Polymers 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000011208 reinforced composite material Substances 0.000 description 3
- XQUPVDVFXZDTLT-UHFFFAOYSA-N 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C(C=C1)=CC=C1CC1=CC=C(N2C(C=CC2=O)=O)C=C1 XQUPVDVFXZDTLT-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- -1 and recently Polymers 0.000 description 2
- 239000004760 aramid Substances 0.000 description 2
- 229920003235 aromatic polyamide Polymers 0.000 description 2
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 229920003986 novolac Polymers 0.000 description 2
- 229920003192 poly(bis maleimide) Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 239000009719 polyimide resin Substances 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 239000011342 resin composition Substances 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 229920006337 unsaturated polyester resin Polymers 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 239000011825 aerospace material Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920002577 polybenzoxazole Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 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
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Reinforced Plastic Materials (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明のロッド状成形物中間体
は、土木建築材料，輸送用機器，航空宇宙用材料，一般
産業用途などに有用な優れた機械的強度と取扱性を持っ
た繊維強化複合材料中間体及びその成形方法に関するも
のである。BACKGROUND OF THE INVENTION The rod-shaped molded product intermediate of the present invention is a fiber having excellent mechanical strength and handleability useful for civil engineering and construction materials, transportation equipment, aerospace materials, general industrial uses and the like. The present invention relates to a reinforced composite material intermediate and a method for molding the same.
【０００２】特に、本発明の中間体を用いると、中間体
自身の自重により垂れ下がらない程度の硬さを持ち、且
つ、外力により曲げることができる柔軟性があるため、
コンクリ−トやプラスチックのようなマトリックス中に
埋め込んだ後に硬化させることも可能で、比較的取り扱
いが容易で補強用材料として有用である。また、中間体
の状態でスプリングやコイル状といった複雑形状を与え
た後に硬化させ、成形体とすることもでき、機械的強度
に優れた複雑な形状の成形体及びその成形方法を与える
ものである。In particular, when the intermediate of the present invention is used, the intermediate has a hardness such that it does not hang down due to its own weight, and has flexibility that can be bent by an external force.
It can be cured after being embedded in a matrix such as concrete or plastic, and is relatively easy to handle and useful as a reinforcing material. In addition, after giving a complex shape such as a spring or a coil in the state of an intermediate, it can be cured and formed into a molded product, and a molded product having a complicated shape excellent in mechanical strength and a molding method thereof are provided. .
【０００３】[0003]
【従来の技術】近年、炭素繊維，芳香族ポリアミド繊
維，ガラス繊維等を強化繊維として用いた複合材料は、
その高い比強度，比剛性を利用して、ゴルフシャフト等
のスポ−ツ・レジャ−用品，航空機等の構造材，自動車
の部材，コンクリ−トの補強用等に幅広く用いられてき
た。2. Description of the Related Art In recent years, composite materials using carbon fibers, aromatic polyamide fibers, glass fibers and the like as reinforcing fibers have been developed.
Utilizing its high specific strength and specific rigidity, it has been widely used for sports and leisure items such as golf shafts, structural materials such as aircraft, members of automobiles, and reinforcement of concrete.
【０００４】これらの複合材料は、強化繊維にマトリッ
クス樹脂を含浸させた中間製品であるシ−ト状のプリプ
レグを所定の形状に切断し、特定形状の成形用の型にセ
ットした後、オ−トクレ−ブ成形やホットプレス成形と
いった、加圧下で加熱する成形加工工程を経て高強度の
成形体として用いられる場合が多い。シ−ト状のプリプ
レグに用いられるマトリックス樹脂としては、熱硬化性
樹脂としてエポキシ樹脂，ビスマレイミド樹脂，不飽和
ポリエステル樹脂，ポリイミド樹脂等が用いられ、ま
た、最近ではポリエ−テルエ−テルケトンといった熱可
塑性樹脂も用いられるようになってきており、何れの樹
脂を用いた場合も、複合材料は、その優れた耐熱性、機
械的特性、寸法安定性、耐薬品性、耐候性が特徴とされ
ていた。These composite materials are prepared by cutting a sheet-shaped prepreg, which is an intermediate product obtained by impregnating a matrix resin into a reinforcing fiber, into a predetermined shape, setting the prepreg in a molding die having a specific shape, and then removing the prepreg. It is often used as a high-strength molded article through a molding step of heating under pressure, such as toque molding or hot press molding. As a matrix resin used for the sheet-like prepreg, epoxy resins, bismaleimide resins, unsaturated polyester resins, polyimide resins, etc. are used as thermosetting resins, and recently, thermoplastic resins such as polyether-terketone are used. Resins have also been used, and when using any resin, composite materials were characterized by their excellent heat resistance, mechanical properties, dimensional stability, chemical resistance, and weather resistance. .
【０００５】[0005]
【発明が解決しようとする課題】プリプレグは、一般に
繊維目付１０〜１０００ｇ／ｍ2 で繊維を一方向に均一
に引き揃えるか、予め織物に加工したシ−トに熱硬化性
樹脂を含浸させて作られたもので、シ−トの幅は５０〜
１００ｃｍ程度で長手方向に連続したものが多い。ある
いは強化繊維の単繊維を３０００〜１２０００本集めて
一本のストランドとしたものに、前記熱硬化性樹脂を含
浸させて作ったストランドプリプレグと呼ばれるものも
プリプレグの形態の一種として挙げられる。The prepreg is generally prepared by uniformly arranging the fibers in one direction with a fiber weight of 10 to 1000 g / m 2 or impregnating a previously woven sheet with a thermosetting resin. The width of the sheet is 50 ~
Many are about 100 cm continuous in the longitudinal direction. Alternatively, a strand called a strand prepreg made by collecting 3000 to 12000 single fibers of reinforcing fibers into one strand and impregnating the thermosetting resin is also included as one type of prepreg.
【０００６】一般にプリプレグは、成形用中間体として
シ−ト状あるいはストランド状のものが殆どで、単繊維
１０００００本以上で構成された、あるいは直径３ｍｍ
以上の連続ロッド状のプリプレグも理論的には作製可能
であるが、ロッドの直径が太くなると繊維に樹脂を複合
させる際に均一に樹脂を含浸させることが難しくなる。
また、溶媒に樹脂を溶かして繊維に含浸させた後の乾燥
が不充分になる等の問題が多くあるため、直径の大きい
ロッド状のプリプレグは作られていなかった。[0006] Generally, most prepregs are sheet-like or strand-like intermediates for molding, and are composed of 100,000 single fibers or more, or have a diameter of 3 mm.
The above continuous rod-shaped prepreg can be theoretically produced, but when the diameter of the rod is increased, it becomes difficult to uniformly impregnate the resin when the fiber is combined with the resin.
Further, there are many problems such as insufficient drying after dissolving the resin in the solvent and impregnating the fibers, and thus a rod-shaped prepreg having a large diameter has not been produced.
【０００７】一方で、連続ロッド状プリプレグは、一般
産業用途で望まれていた。例えば、近年の大型構造物の
コンクリ−ト等の補強用としての鉄筋は、比重が大きく
軽量化が難しい他、サビやすい等の問題があるため、代
替として繊維強化樹脂複合材料筋の出現が望まれ、比強
度では鉄筋を凌駕する他、耐環境性に関しても高い性能
を示すものであった。On the other hand, continuous rod-shaped prepregs have been desired for general industrial use. For example, in recent years, reinforcing bars for reinforcing concrete and the like of large structures have large specific gravity, making it difficult to reduce the weight, and have problems such as easy rusting. Therefore, the appearance of fiber-reinforced resin composite material bars is expected as an alternative. Rarely, the specific strength surpassed the rebar and showed high performance in terms of environmental resistance.
【０００８】特開平６−２６４５６３号公報にはコンク
リ−トの型枠内に炭素繊維糸条のプリプレグを張りめぐ
らし、通電加熱させて熱硬化性樹脂を硬化せしめた後、
コンクリ−トを流して構造物を作る方法が明示されてい
る。しかしながら、このような方法に用いる炭素繊維糸
条のプリプレグは、直径が細く柔らかく自己支持性がな
く、自重により垂れ下がるため、枠内の係止具に引っか
けて緊張状態で配筋することが記載されている。Japanese Patent Application Laid-Open No. 6-264563 discloses a method in which a prepreg of a carbon fiber thread is stretched around a concrete mold and heated to heat the thermosetting resin.
The method of making a structure by flowing concrete is specified. However, it is described that the prepreg of the carbon fiber thread used in such a method has a small diameter, is soft and has no self-supporting property, and hangs down by its own weight. ing.
【０００９】このような方法では、単位体積当たりに仕
込まれる炭素繊維糸条の本数や配置方法や位置が規制さ
れ設計が固定化されてしまう他、作業性も複雑で現場作
業において簡便にできるものではなかった。According to such a method, the number, arrangement method and position of the carbon fiber yarns to be charged per unit volume are regulated, and the design is fixed. In addition, the workability is complicated and the work can be performed easily on site. Was not.
【００１０】特開平７−１７８７２８号公報には、コン
クリート補強筋として強化繊維プリプレグを用いるこ
と、また、プリプレグの一例として、ストランドの外周
に強化繊維を螺旋状に被覆し形成するプリプレグが明示
されている。しかし、このプリプレグは、マトリックス
樹脂に湿気硬化樹脂を用いているため、水分の浸透が困
難なプリプレグ中心部で硬化しにくいという問題があっ
た。Japanese Patent Application Laid-Open No. 7-178728 discloses the use of a reinforcing fiber prepreg as a concrete reinforcing bar and, as an example of the prepreg, a prepreg formed by spirally coating a reinforcing fiber on the outer periphery of a strand. I have. However, since the prepreg uses a moisture-curable resin as the matrix resin, there is a problem that it is difficult to cure at the center of the prepreg where penetration of moisture is difficult.
【００１１】その他の用途として、炭素繊維強化複合材
料で作製されたスプリング状のような複雑形状の成形体
の作製や家庭用の補修材として、簡便に扱える中間体の
要望も多いが、従来の繊維強化複合材料の成形概念で
は、方法が複雑になり、コストアップになる傾向であっ
た。As other uses, there are many demands for intermediates which can be easily handled as a material for manufacturing a molded article having a complicated shape such as a spring shape made of a carbon fiber reinforced composite material or as a repair material for home use. The concept of molding fiber-reinforced composite materials has tended to be complicated and costly.
【００１２】即ち本発明は、連続ロッド状成形物中間体
において、未硬化の熱硬化性マトリックス樹脂成分を含
浸した炭素繊維を含む長繊維束からなる第１の強化繊維
束と、その外周に配された第２の強化繊維とからなり、
かつ第２の強化繊維で第１の強化繊維束が結束さた連続
ロッド状成形物中間体であって、連続ロッド状成形物中
間体が自身の自重により垂れ下がらないような充分な硬
さを有し、且つ外力により曲げることができる柔軟性も
兼ね備えたことを特徴とする連続ロッド状成形物中間体
である。That is, according to the present invention, in a continuous rod-shaped molded product intermediate, a first reinforcing fiber bundle composed of a long fiber bundle containing carbon fibers impregnated with an uncured thermosetting matrix resin component and an outer periphery thereof are provided. Made of the second reinforcing fiber,
And a continuous rod-shaped molded product intermediate body in which the first reinforcing fiber bundle is bound with the second reinforcing fiber, and has a sufficient hardness so that the continuous rod-shaped molded product intermediate does not hang down by its own weight. It is a continuous rod-shaped molded product intermediate having a flexibility that can be bent by an external force.
【００１３】また、その連続ロッド状成形物中間体の製
造法は、未硬化の熱硬化性マトリックス樹脂を含浸した
第１の強化繊維束の外周に第２の強化繊維を、巻き圧力
１ｋｇ／ｍｍ2以上の巻き圧でスパイラル状に巻き付
け、第１の強化繊維束を第２の強化繊維で結束すること
を特徴とする。Further, the method for producing the continuous rod-shaped molded product intermediate is such that a second reinforcing fiber is wound around the outer periphery of a first reinforcing fiber bundle impregnated with an uncured thermosetting matrix resin, and a winding pressure of 1 kg / mm. It is characterized in that the first reinforcing fiber bundle is bound by the second reinforcing fiber by spirally winding with two or more winding pressures.
【００１４】連続ロッド状成形体の成形方法は、未硬化
の熱硬化性マトリックス樹脂成分を含浸した炭素繊維を
含む長繊維束からなる第１の強化繊維束と、その外周に
配された第２の強化繊維とからなり、かつ第２の強化繊
維で第１の強化繊維束が結束さた連続ロッド状成形物中
間体であって、連続ロッド状成形物中間体が自身の自重
により垂れ下がらないような充分な硬さを有し、且つ外
力により曲げることができる柔軟性も兼ね備えた連続ロ
ッド状成形物中間体に通電し、炭素繊維の電気抵抗を利
用して発熱させ、熱硬化性マトリックス樹脂成分を硬化
させることを特徴とする。[0014] The method of forming the continuous rod-shaped molded body includes a first reinforcing fiber bundle composed of a long fiber bundle containing carbon fibers impregnated with an uncured thermosetting matrix resin component, and a second reinforcing fiber bundle arranged on the outer periphery thereof. And the first reinforcing fiber bundle is bound by the second reinforcing fiber, and the continuous rod-like molded product intermediate does not hang down by its own weight. Energize a continuous rod-shaped molded product intermediate that has sufficient hardness and flexibility that can be bent by external force, and generates heat using the electrical resistance of carbon fiber, resulting in a thermosetting matrix resin. It is characterized by curing the components.
【００１５】本発明の連続ロッド状成形物中間体は、自
己支持性があり中間体自身の自重により垂れ下がらない
ような充分な硬さを持ち、且つ外力により曲げることが
できる可撓性も兼ね備えているため、コンクリ−トの補
強用途あるいはスプリング状のような複雑形状の成形体
の作製に効果的である。本発明の連続ロッド状成形物中
間体は、自動車、航空機を含む輸送体に使用されるスプ
リング類などの成形体、家屋などの建築物の補強、端な
どの構造物の補強等の用途に好適であるThe continuous rod-shaped molded product intermediate of the present invention is self-supporting, has sufficient hardness so that it does not hang down by its own weight, and has flexibility that can be bent by external force. Therefore, it is effective for reinforcing concrete or for producing a molded article having a complicated shape such as a spring. The continuous rod-shaped molded product intermediate of the present invention is suitable for uses such as molded products such as springs used in vehicles including automobiles and aircraft, reinforcement of buildings such as houses, and reinforcement of structures such as edges. Is
【００１６】本発明の連続ロッド状成形中間体を図面に
よって説明する。図１は連続ロッド状成形中間体斜視図
を示したものである。本発明の連続ロッド状成形物中間
体は、未硬化の熱硬化性マトリックス樹脂成分を含浸し
た炭素繊維を含む長繊維束からなる第１の強化繊維束１
と、その外周に配された第２の強化繊維２とからなり、
かつ第２の強化繊維２で第１の強化繊維束１が結束され
ている。The continuous rod-shaped molding intermediate of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a continuous rod-shaped molded intermediate. The continuous rod-shaped molded product intermediate of the present invention comprises a first reinforcing fiber bundle 1 comprising a long fiber bundle containing carbon fibers impregnated with an uncured thermosetting matrix resin component.
And a second reinforcing fiber 2 arranged on the outer periphery thereof,
In addition, the first reinforcing fiber bundle 1 is bound by the second reinforcing fiber 2.
【００１７】本発明の連続ロッド状中間体において、第
１および第２の強化繊維の種類は、炭素繊維，ボロン繊
維，窒化ケイ素繊維，芳香族ポリアミド繊維，ガラス繊
維，アルミナ繊維，ポリオレフィン繊維，ポリベンゾチ
アゾ−ル繊維，ポリベンゾオキサゾ−ル繊維が含まれ
る。炭素繊維としては、アクリル系炭素繊維、ピッチ系
炭素繊維等特に制限はなく、引張り強さ３５０Ｋｇｆ／
ｍｍ2，引張弾性率２４ｔｏｎ／ｍｍ2のものが汎用とし
て用いられている。引張弾性率２４ｔｏｎ／ｍｍ2以上
の高弾性率繊維も使用できる。複合材料の機械的特性を
向上させた、引張り強さ４００Ｋｇｆ／ｍｍ2以上、弾
性率３０Ｔ／ｍｍ2レベルの、いわゆる中弾性高強度炭
素繊維も用いることもできる。In the continuous rod-shaped intermediate of the present invention, the types of the first and second reinforcing fibers are carbon fiber, boron fiber, silicon nitride fiber, aromatic polyamide fiber, glass fiber, alumina fiber, polyolefin fiber, polybenzothiazo. -Fiber and polybenzoxazole fiber. The carbon fiber is not particularly limited, such as an acryl-based carbon fiber and a pitch-based carbon fiber, and has a tensile strength of 350 kgf /
Those having an mm 2 and a tensile modulus of elasticity of 24 ton / mm 2 are used for general purposes. High elastic modulus fibers having a tensile elastic modulus of 24 ton / mm 2 or more can also be used. So-called medium-elasticity high-strength carbon fibers having improved mechanical properties of the composite material and having a tensile strength of 400 kgf / mm 2 or more and an elastic modulus of 30 T / mm 2 level can also be used.
【００１８】第１の強化繊維の形態は、単繊維を３００
０〜１２０００本集めて一本のストランドとしたもの
を、更に集めて、組紐，織物，撚糸，合糸あるいはこれ
らを組合わせた形態で使用することもできる。あるいは
単繊維が１２０００本以上収束されたトウ状の連続糸を
用いることもできる。または、強化繊維に熱硬化性樹脂
を含浸させた連続状の一方向シート、織物、短繊維マッ
ト状のプルプレグ等を丸めてロッド状にしたもの、ある
いはストランド状プリプレグを束ねたもの、あるいはこ
れらを組み合わせたものを用いることができる。外周に
配された第２の強化繊維の種類は、内層の第１の強化繊
維に使用することのできる範囲の繊維から選択して使用
できるが、第１の強化繊維と同一の繊維種の物を使用し
なければならないことはない。The form of the first reinforcing fiber is as follows.
A strand obtained by collecting 0 to 12,000 pieces can be further collected and used in the form of a braid, a woven fabric, a twisted yarn, a combined yarn, or a combination thereof. Alternatively, a tow-shaped continuous yarn in which 12,000 or more single fibers are converged can also be used. Or, a continuous one-way sheet in which a thermosetting resin is impregnated into a reinforcing fiber, a woven fabric, a staple fiber mat-shaped prepreg, or the like, which is rolled into a rod shape, or a bundle of strand prepregs, or a mixture of these. Combinations can be used. The type of the second reinforcing fiber disposed on the outer periphery can be selected from fibers in a range that can be used for the first reinforcing fiber of the inner layer, and the same type of fiber as the first reinforcing fiber can be used. There is no need to use.
【００１９】第２の強化繊維の形態は、ストランド、シ
−ト、織物、組紐、撚糸、合糸、あるいはこれらを組み
合わせたものを用いることができる。熱硬化性樹脂を含
浸させたテ−プ状のプリプレグを用いることもできる。
第２の強化繊維としてストランドを用いたときは、スト
ランドに１〜１０／ｍの撚りを付与してあると、中間体
を一定方向に巻き付けるときに、単繊維相互のずれがな
く中間体の形態を崩すことなく巻き付けることができ
る。よりがない繊維では機械巻きするときにこすれて繊
維表面が損傷しやすくなるため好ましくない。第２の強
化繊維は、第１の強化繊維の上から任意のピッチでもっ
てスパイラル状に巻つけ、第１の強化繊維を結束してい
る構成となる。As a form of the second reinforcing fiber, a strand, a sheet, a woven fabric, a braid, a twisted yarn, a combined yarn, or a combination thereof can be used. A tape-shaped prepreg impregnated with a thermosetting resin can also be used.
When a strand is used as the second reinforcing fiber, if the strand has a twist of 1 to 10 / m, when the intermediate is wound in a certain direction, there is no displacement between the single fibers and the form of the intermediate Can be wound without breaking. Unsmooth fibers are not preferred because they are easily rubbed during mechanical winding and the fiber surface is easily damaged. The second reinforcing fiber is wound spirally at an arbitrary pitch from above the first reinforcing fiber to bind the first reinforcing fiber.
【００２０】巻き付け時の圧力は１Ｋｇ／ｃｍ2以上で
あることが好ましい。１Ｋｇ／ｃｍ2を下回ると加熱に
よる熱硬化性樹脂の硬化後の成形体に空孔部や微小ボイ
ド等の欠陥が多く残り、成形体の機械的強度を低下させ
るので好ましくない。The pressure at the time of winding is preferably 1 kg / cm 2 or more. If it is less than 1 kg / cm 2 , many defects such as voids and minute voids remain in the molded body after curing of the thermosetting resin by heating, which is not preferable because the mechanical strength of the molded body is reduced.
【００２１】第１および第２の強化繊維に含浸させる熱
硬化性マトリックス樹脂としての、熱硬化性樹脂組成物
は、エポキシ樹脂，ビスマレイミド樹脂、不飽和ポリエ
ステル樹脂、ポリイミド樹脂等特に制限されない。第１
の強化繊維層には、熱硬化性マトリックス樹脂成分を含
有しているが、第２の強化繊維層は含まなくてもよい。The thermosetting resin composition as the thermosetting matrix resin impregnated in the first and second reinforcing fibers is not particularly limited, such as an epoxy resin, a bismaleimide resin, an unsaturated polyester resin, and a polyimide resin. First
Although the reinforcing fiber layer contains a thermosetting matrix resin component, the second reinforcing fiber layer may not be included.
【００２２】連続ロッド状成形物中間体における樹脂組
成物の含有率は３０〜５０体積％が適当である。樹脂が
３０％以下の場合は成形後、温度ムラが大きくなり、樹
脂が５０％以上の場合は通電加熱での温度ムラが大きく
なるため好ましくない。The content of the resin composition in the continuous rod-shaped molded product intermediate is suitably 30 to 50% by volume. When the resin content is 30% or less, the temperature unevenness increases after molding, and when the resin content is 50% or more, the temperature unevenness due to energization heating increases, which is not preferable.
【００２３】また、熱硬化性樹脂に熱可塑性樹脂等を混
合して用いても構わない。この場合、熱可塑性樹脂の量
が多くなると中間体の柔軟性が失われる場合があるた
め、熱可塑性樹脂は全体の３０体積％を越えないことが
好ましい。A thermosetting resin may be mixed with a thermoplastic resin or the like. In this case, if the amount of the thermoplastic resin increases, the flexibility of the intermediate may be lost. Therefore, it is preferable that the amount of the thermoplastic resin does not exceed 30% by volume.
【００２４】本発明の連続ロッド状成形物中間体は、そ
の芯部の第１の強化繊維と熱硬化性樹脂とを主成として
構成された内層、該内層の外周に配された第２の強化繊
維を主成分として構成され、第２の強化繊維によって結
束されているため、中間体自身の自重により容易に垂れ
下がることない、自己支持性を有する。しかも外力によ
り曲げることができる、可撓性を有する。ここで、自己
支持性とは、２０℃の条件化で中間体の直径の１００倍
の長さで直立させたときに、自体によって９０度以上の
角度に撓まないことをいう。また、可撓性とは、マトリ
ックス樹脂の硬化開始温度以下の温度で本発明の中間体
の直径の少なくとも１０倍の径のパイプに巻き付けるこ
とのできる特性を言う。この特性は、本発明の中間体を
コンクリートの補強筋として使用するときの、ベンダー
行程、配筋作業に重要な特性である。The continuous rod-shaped molded product intermediate of the present invention has an inner layer mainly composed of a first reinforcing fiber and a thermosetting resin of a core portion thereof, and a second layer disposed on the outer periphery of the inner layer. Since the reinforcing material is mainly composed of the reinforcing fibers and bound by the second reinforcing fibers, the intermediate has a self-supporting property that does not easily hang down due to its own weight. Moreover, it has flexibility that can be bent by external force. Here, the self-supporting property means that when the intermediate body is erected at a length of 100 times the diameter of the intermediate body under the condition of 20 ° C., it does not bend to an angle of 90 ° or more by itself. The term "flexibility" refers to a property that can be wound around a pipe having a diameter of at least 10 times the diameter of the intermediate of the present invention at a temperature equal to or lower than the curing start temperature of the matrix resin. This property is an important property for a bender process and a reinforcing work when the intermediate of the present invention is used as a reinforcing bar for concrete.
【００２５】このような特性を中間体に付与するため
に、第１の強化繊維を第２の強化繊維で結束している。
連続ロッド状成形物中間体の作製においてロッドの直径
が３ｍｍ以上になると、通常のプリプレグ作製方法では
樹脂の含浸や乾燥不足の問題があるため、本発明の方法
で連続ロッド状成形物中間体を作製することが好まし
い。In order to impart such properties to the intermediate, the first reinforcing fibers are bound by the second reinforcing fibers.
When the diameter of the rod becomes 3 mm or more in the production of the continuous rod-shaped molded product intermediate, there is a problem of impregnation of resin and insufficient drying in the usual prepreg production method. It is preferable to make it.
【００２６】本発明の連続ロッド状成形物中間体の製造
方法について一例を示すと次の通りである。図２のよう
に、第１の強化繊維束１を一定の速度で送りながら、第
２の強化繊維束２を連続的に第一の強化繊維束の回りを
回転させながら巻き付けていく。An example of the method for producing a continuous rod-shaped molded product intermediate of the present invention is as follows. As shown in FIG. 2, while feeding the first reinforcing fiber bundle 1 at a constant speed, the second reinforcing fiber bundle 2 is continuously wound while rotating around the first reinforcing fiber bundle.
【００２７】本発明の連続ロッド状成形物中間体を用い
て成型物を得る方法について一例を示すと次の通りであ
る。図３のように、芯金４にロッド状成形物中間体３を
巻きつけて、加熱して、樹脂を硬化させた後、芯金を抜
いて、成形物（スプリング）とする。An example of a method for obtaining a molded product using the continuous rod-shaped molded product intermediate of the present invention is as follows. As shown in FIG. 3, the rod-shaped molded product intermediate body 3 is wound around the cored bar 4 and heated to cure the resin, and then the cored bar is removed to obtain a molded product (spring).
【００２８】連続ロッド状成形物中間体を加熱する手段
として、炭素繊維の電気抵抗を利用して電流を流すこと
によって発熱させ、熱硬化性樹脂成分を硬化させて成形
体を得る場合、通電させる上で中間体の全体に対する炭
素繊維の含有率が３０体積％以上、好ましくは５０体積
％以上であることが望まれる。硬化後のロッド状成形体
の繊維体積含有率は、機械的性質を適正化する上で５０
〜７０体積％の範囲内にあることが好ましい。As means for heating the continuous rod-shaped molded product intermediate, heat is generated by applying an electric current utilizing the electrical resistance of carbon fibers, and when a thermosetting resin component is cured to obtain a molded product, electricity is supplied. In the above, it is desired that the content of the carbon fiber with respect to the entire intermediate is 30% by volume or more, preferably 50% by volume or more. The fiber volume content of the rod-shaped molded product after curing is 50% in order to optimize mechanical properties.
It is preferably in the range of ７０70% by volume.
【００２９】これらの連続ロッド状成形物中間体は、外
力により曲げることができる柔軟性があるためにボビン
やクリ−ル等にコンパクトに巻き取れ、持ち運びが容易
で現場に持ち込むこともできる。連続ロッド状成形物中
間体は、所定の形状あるいは型に充填したり巻きつけた
後、加熱して熱硬化性樹脂成分を硬化せしめることによ
って成形物とすることができる。Since these continuous rod-shaped molded products have flexibility that can be bent by an external force, they can be compactly wound around a bobbin or a reel, are easily carried, and can be brought to the site. The continuous rod-shaped molded product intermediate can be formed into a molded product by filling or winding into a predetermined shape or mold, and then heating to cure the thermosetting resin component.
【００３０】連続ロッド状成形物中間体を円筒状の型に
コイル状に巻つけ加熱することによって、スプリング等
の特殊形状の成形体を作製することができる。加熱の温
度は用いる熱硬化性樹脂成分の種類によって変わるが、
一般には７０〜３００℃の範囲内である。By winding the continuous rod-shaped molded product intermediate around a cylindrical mold in a coil shape and heating, a molded product having a special shape such as a spring can be produced. The heating temperature varies depending on the type of thermosetting resin component used,
Generally, it is in the range of 70 to 300 ° C.
【００３１】本発明の連続ロッド状成形物中間体は、内
層及び該内層を被覆する外側から構成され、巻きの圧力
は１Ｋｇ／ｍｍ2以上であるため、プレス機やオ−トク
レ−ブあるいはゴム型のような成形時に圧力が掛かるよ
うに工夫された治具等を使用しないでも、欠陥の少ない
成形体を得ることができる。The continuous rod-shaped molded product intermediate of the present invention is composed of an inner layer and an outer layer covering the inner layer, and has a winding pressure of 1 kg / mm 2 or more. A molded article with few defects can be obtained without using a jig designed to apply pressure during molding such as a mold.
【００３２】得られた成形体の中には、炭素繊維などの
強化繊維を一方向に５０体積％以上の高い割合で充填さ
せることが可能で、長さ方向の引張り及び圧縮強度に優
れた成形体とすることができる。The obtained molded body can be filled with a reinforcing fiber such as carbon fiber at a high ratio of 50% by volume or more in one direction, and has excellent tensile and compressive strength in the longitudinal direction. Can be a body.
【００３３】強化繊維に電気伝導性のある繊維を用いた
場合、通電加熱によって中間体自身を発熱させ熱硬化性
樹脂成分を硬化せしめることができ、簡便な方法で硬化
の作業が完了できる。構造物の上から巻つけた後に通電
加熱によって硬化させることも可能で、簡便な方法で構
造物の補強ができ有効である。電気伝導性の強化繊維と
しては、強度的な要因だけでなく、繊維自身が発熱させ
るのに適した抵抗値を持つ炭素繊維が良い。コンクリ−
ト補強用として本発明の連続ロッド状成形物中間体を用
いる場合、熱硬化性樹脂成分を硬化させない中間体の状
態でコンクリ−トを流し込み、コンクリ−トが固まった
後に通電加熱によって樹脂を硬化させ成形体にすること
ができる。When an electrically conductive fiber is used as the reinforcing fiber, the intermediate itself generates heat by applying electric current to heat the thermosetting resin component, whereby the hardening operation can be completed by a simple method. It is also possible to harden the structure by energizing and heating after winding over the structure, and it is possible to reinforce the structure by a simple method, which is effective. As the electrically conductive reinforcing fiber, not only a strength factor but also a carbon fiber having a resistance value suitable for causing the fiber itself to generate heat is preferable. Concrete
When the continuous rod-shaped molded product intermediate of the present invention is used for reinforcement, the concrete is poured in a state of the intermediate which does not cure the thermosetting resin component, and after the concrete is hardened, the resin is cured by applying electric current. Into a molded article.
【００３４】この場合、クリ−ル等に巻かれた中間体を
連続的に取り出しながら作業できるので、作業性には問
題ない。この方法では、熱硬化性樹脂を硬化させる前に
コンクリ−トに充填した後、通電加熱によって樹脂を硬
化させるため、コンクリ−トとロッド状成形物との接着
性に優れたコンクリ−ト／繊維強化複合材料を作製する
ことができた。In this case, there is no problem in the workability since the work can be performed while continuously taking out the intermediate wound around the reel or the like. In this method, since the thermosetting resin is filled into the concrete before being cured, and then the resin is cured by heating with electricity, the concrete / fiber having excellent adhesion between the concrete and the rod-shaped molded product is obtained. A reinforced composite material could be made.
【００３５】予想外の効果として、中間体表面の炭素繊
維等の繊維切れでによるケバや突起が硬化後にアンカ−
効果となり補強効果を高めるものとなった。また、成形
体中の繊維密度が高くボイド等の欠陥が少ないため、コ
ンクリ−ト等のマトリックス中に、高い充填密度で連続
ロッド状成形体を配置させることが可能となる。炭素繊
維などの電気伝導性のある強化繊維を主成分とする連続
ロッド状成形物中間体において、通電する方法は、一般
にロッドの両端部に金属製の端子を取り付け、この端子
より電気を流すことによって中間体が発熱し、熱硬化性
樹脂成分を硬化させる。An unexpected effect is that fluffs and projections due to breakage of fibers such as carbon fibers on the surface of the intermediate body are cured after anchoring.
The effect was enhanced and the reinforcing effect was enhanced. Further, since the fiber density in the molded product is high and the number of defects such as voids is small, it is possible to arrange the continuous rod-shaped molded product with high packing density in a matrix such as concrete. In the case of a continuous rod-shaped molded product whose main component is a reinforcing fiber having electrical conductivity such as carbon fiber, the method of applying electricity is generally to attach metal terminals to both ends of the rod and to apply electricity from these terminals. As a result, the intermediate generates heat and cures the thermosetting resin component.
【００３６】電源からの印加電圧は、硬化した熱硬化性
樹脂が分解しない範囲の電圧を用いることが望まれる。
電源は直流でも交流でも構わない。本発明の連続ロッド
状成形物中間体及びその成形体は、コイル状などの複雑
形状の強化繊維プラスチックを形成させる上で有効であ
る他、コンクリ−ト等の構造物の強化や補強に有効であ
る。It is desired that the voltage applied from the power supply be within a range where the cured thermosetting resin is not decomposed.
The power supply may be DC or AC. INDUSTRIAL APPLICABILITY The continuous rod-shaped molded product intermediate and the molded product of the present invention are effective not only for forming a reinforced fiber plastic having a complicated shape such as a coil shape, but also for reinforcing or reinforcing structures such as concrete. is there.
【００３７】特に、炭素繊維などの強化繊維をロッドの
長さ方向に一方向に高い割合で引き揃え充填させること
が可能となるため、長さ方向の引張り及び圧縮強度に優
れた成形体とすることができ、有効である。In particular, a reinforcing fiber such as carbon fiber can be drawn and filled at a high ratio in one direction in the length direction of the rod, so that a molded article having excellent tensile and compressive strength in the length direction can be obtained. Can be effective.
【００３８】［実施例］以下、本発明を実施例１〜３に
よって更に詳細に説明するが、本発明はこれらの実施例
によって制限されるものではない。 ［実施例１］連続した東邦レ−ヨン社製ベスファイト
ＨＴＡ−１２Ｋ（繊維重さ：０．８ｇ／ｍ，引張り強
さ：３５０Ｋｇ／ｍｍ2，引張り弾性率：２４トン／ｍ
ｍ2 ）一本にエポキシ樹脂組成物を３８重量％（炭素繊
維含有率６２重量％）含浸させてストランド状のプリプ
レグを作製した。エポキシ樹脂組成物は、フェノ−ルノ
ボラック型エポキシ樹脂とビスフェノ−ルＡ型エポキシ
樹脂を主成分とし、硬化剤にジシアンジアミドを主剤と
するものである。このストランド状のプリプレグを３０
本一方向に引き揃えて並べて内層とした。次に、この内
層の上からベスファイト ＨＴＡ−１２Ｋのストランド
１本で２ｍｍの巻きピッチで内層の上から巻き圧力２ｋ
ｇ／ｃｍ2 で強く巻きつけ、直径が約５ｍｍの連続ロッ
ド状成形物中間体を作製した。EXAMPLES The present invention will be described in more detail with reference to Examples 1 to 3, but the present invention is not limited by these Examples. Example 1 Continuous Toho Rayon Vesfight
HTA-12K (fiber weight: 0.8 g / m, tensile strength: 350 kg / mm 2 , tensile modulus: 24 ton / m
m 2 ) A single strand was impregnated with 38% by weight of an epoxy resin composition (carbon fiber content: 62% by weight) to prepare a strand-shaped prepreg. The epoxy resin composition comprises a phenol novolak type epoxy resin and a bisphenol A type epoxy resin as main components, and dicyandiamide as a main agent as a curing agent. 30 strands of this prepreg
The inner layer was formed by lining up in one direction. Next, from above the inner layer, a single strand of Vesfite HTA-12K was used, and a winding pressure of 2 k was applied from above the inner layer at a winding pitch of 2 mm.
g / cm 2 , and a continuous rod-shaped molded product intermediate having a diameter of about 5 mm was produced.
【００３９】中間体全体に対する炭素繊維含有量は６７
重量％であった。この中間体を直径１０ｃｍの絶縁され
た５０ｃｍ長さの円筒の型に巻きピッチ２ｃｍでスパイ
ラル状に１０回巻きつけ、型と共にオ−トクレ−ブ内に
吊してセットした。オ−トクレ−ブにて成形圧力３Ｋｇ
／ｃｍ2 ，成形温度１３０℃，成形時間１時間の条件で
中間体のエポキシ樹脂組成物を硬化させ、得られた成形
体を円筒より取りはずし端部を切断しスプリング状の成
形体とした。このスプリングは、１トンの引張り荷重に
耐えるものであった。The carbon fiber content of the whole intermediate is 67.
% By weight. The intermediate was wound 10 times in a spiral shape at a pitch of 2 cm around an insulated cylindrical mold having a diameter of 10 cm and a length of 50 cm, and set together with the mold in an autoclave. 3 Kg molding pressure with autoclave
/ Cm 2 , a molding temperature of 130 ° C., and a molding time of 1 hour, the intermediate epoxy resin composition was cured, the obtained molded body was removed from the cylinder, and the end was cut to obtain a spring-shaped molded body. This spring withstood a ton of tensile load.
【００４０】［実施例２］連続した東邦レ−ヨン社製ベ
スファイト ＨＴＡ−１２Ｋ（繊維重さ：０．８ｇ／
ｍ，引張り強さ：３５０Ｋｇ／ｍｍ2 ，引張り弾性率：
２４トン／ｍｍ2 ）を３０本一方向に引き揃え、エポキ
シ樹脂組成物を含浸させて繊維目付３００ｇ／ｍ2 で樹
脂含有率３８重量％のシ−ト状の一方向プリプレグを作
製した。エポキシ樹脂組成物は、フェノ−ルノボラック
型エポキシ樹脂とビスフェノ−ルＡ型エポキシ樹脂を主
成分とし、硬化剤にジシアンジアミドを主剤とするもの
である。このプリプレグを繊維の方向が一方向になるよ
うに束ね合わせて内層とした。次に、この内層の上から
１ｍ当たり４０回の撚りをかけたベスファイト ＨＴＡ
−１２Ｋのストランド１本で２ｍｍの巻きピッチで内層
の上から巻き圧力２ｋｇ／ｃｍ2 で強く巻きつけ、直径
が約５ｍｍの連続ロッド状成形物中間体を作製した。実
施例１と同様に、１０ｃｍの絶縁された５０ｃｍ長さの
円筒の型に巻きピッチ２ｃｍでスパイラル状に１０回巻
きつけた。Example 2 Continuous Vesfight HTA-12K manufactured by Toho Rayon Co., Ltd. (fiber weight: 0.8 g /
m, tensile strength: 350 kg / mm 2 , tensile modulus:
24 tons / mm 2 ) were unidirectionally aligned in one direction, and impregnated with an epoxy resin composition to prepare a sheet-like unidirectional prepreg having a fiber weight of 300 g / m 2 and a resin content of 38% by weight. The epoxy resin composition comprises a phenol novolak type epoxy resin and a bisphenol A type epoxy resin as main components, and dicyandiamide as a main agent as a curing agent. The prepregs were bundled so that the direction of the fibers was one direction to form an inner layer. Next, Vesfight HTA which was twisted 40 times per meter from above this inner layer
A single -12K strand was strongly wound from above the inner layer at a winding pressure of 2 kg / cm 2 at a winding pitch of 2 mm to produce a continuous rod-shaped molded product having a diameter of about 5 mm. As in Example 1, it was wound 10 times spirally at a pitch of 2 cm around a 10 cm insulated 50 cm long cylindrical mold.
【００４１】中間体全体対する炭素繊維含有量は６７重
量％であった。ロッド状成形物中間体の両端に金属製金
具を電極端子として取り付け固定した。電極端子より中
間体に２０Ｖの電流を流したところ、中間体が発熱し１
３０℃に達し、中間体のエポキシ樹脂組成物が硬化反応
を開始した。通電した状態を６０分間続け、硬化反応を
完了させた後、得られた成形体を円筒より取りはずし端
部を切断しスプリング状の成形体とした。このスプリン
グは、実施例１と同様に１トンの引張り荷重に耐えるも
のであった。The carbon fiber content of the whole intermediate was 67% by weight. Metal fittings were attached and fixed to both ends of the rod-shaped molded product intermediate body as electrode terminals. When a current of 20 V was applied to the intermediate from the electrode terminal, the intermediate generated heat and 1
When the temperature reached 30 ° C., the intermediate epoxy resin composition started a curing reaction. After the energized state was continued for 60 minutes to complete the curing reaction, the obtained molded body was removed from the cylinder and the end was cut to obtain a spring-shaped molded body. This spring withstands a tensile load of 1 ton as in Example 1.
【００４２】［実施例３］実施例１と同様に連続ロッド
状成形物中間体を作製した。この中間体を長さ３００ｍ
ｍに切断し、両端に金属製金具を電極端子として取り付
けた後、両端に張力をかけて固定した。電極端子より中
間体に２０Ｖの電流を流したところ、中間体が発熱し１
３０℃に達し、中間体のエポキシ樹脂組成物が硬化反応
を開始した。通電した状態を６０分間続け、硬化反応を
完了させた後、得られた成形体は直径５ｍｍの丸棒状の
成形体であった。この丸棒の引張り試験を行ったとこ
ろ、荷重３．５トンで破壊した。Example 3 In the same manner as in Example 1, a continuous rod-shaped molded product intermediate was produced. This intermediate is 300m long
m, metal fittings were attached to both ends as electrode terminals, and both ends were fixed by applying tension. When a current of 20 V was applied to the intermediate from the electrode terminal, the intermediate generated heat and 1
When the temperature reached 30 ° C., the intermediate epoxy resin composition started a curing reaction. After the energized state was continued for 60 minutes to complete the curing reaction, the obtained molded product was a round bar-shaped molded product having a diameter of 5 mm. When the round bar was subjected to a tensile test, it was broken at a load of 3.5 tons.
【００４３】［比較例１］実施例１と同様にエポキシ樹
脂組成物を３８重量％含浸させたストランド状のプリプ
レグを作製した。このストランド状のプリプレグ３０本
を撚り合わせて引き揃え、見かけの直径８ｍｍのロ−プ
状の成形物中間体を作製した。中間体全体に対する炭素
繊維含有量は６２重量％であった。実施例３と同様に、
中間体を長さ３００ｍｍに切断し、両端に金属製金具を
電極端子として取り付け通電して樹脂を硬化させた。得
られた成形体はロ−プ状ではあるが、部分的にストラン
ド間が剥離して一体化していなかった。この成形体の引
張り試験を行ったところ、荷重１．５トンより破壊が始
まった。[Comparative Example 1] A strand-like prepreg impregnated with 38% by weight of an epoxy resin composition was prepared in the same manner as in Example 1. Twenty 30 strand-shaped prepregs were twisted and aligned to produce a rope-shaped molded product intermediate having an apparent diameter of 8 mm. The carbon fiber content based on the whole intermediate was 62% by weight. As in Example 3,
The intermediate body was cut into a length of 300 mm, and metal fittings were attached to both ends as electrode terminals to energize the resin to cure the resin. Although the obtained molded article was in the form of a rope, the strands were partially separated and were not integrated. When a tensile test was performed on this molded body, breaking started at a load of 1.5 tons.
【００４４】［実施例４］実施例１と同様に連続ロッド
状成形物中間体を作製した。この中間体を３００ｍｍの
長さで４本準備し、断面が２５ｍｍ角の型枠中に中間体
同志の間隔が５ｍｍになるように両端に張力をかけて固
定し、両端に金属製金具を電極端子として取り付けた。
この型枠中に無補強の圧縮強度が３５０ｋｇｆ／ｃｍ2
となるコンクリ−トを流し込み、室温で養生させながら
コンクリ−トを硬化させた。硬化後、中間体に張力をか
けたまま、電極端子より中間体に２０Ｖの電流を流し中
間体を発熱させ、中間体のエポキシ樹脂組成物を硬化さ
せ、コンクリ−ト中に炭素繊維のロッド状成形物を作製
させた。室温まで冷却の後、この補強コンクリ−ト角棒
より長さ１００ｍｍの試験片を切り出し圧縮試験を行っ
たところ、最大荷重８．０トンで破壊した。Example 4 A continuous rod-shaped molded product intermediate was produced in the same manner as in Example 1. Four intermediate bodies having a length of 300 mm are prepared, and tension is applied to both ends of the intermediate body in a mold having a cross section of 25 mm so that the distance between the intermediate bodies is 5 mm. Mounted as a terminal.
The unreinforced compressive strength in this mold is 350 kgf / cm 2
Then, the concrete was hardened while being cured at room temperature. After curing, while applying tension to the intermediate, a current of 20 V is applied to the intermediate from the electrode terminal to generate heat, the epoxy resin composition of the intermediate is cured, and a rod-like carbon fiber in the concrete is formed. A molded article was produced. After cooling to room temperature, a test piece having a length of 100 mm was cut out from the reinforcing concrete square bar and subjected to a compression test. As a result, the test piece was broken at a maximum load of 8.0 tons.
【００４５】[0045]
【発明の効果】以上述べたように、本発明は、自重によ
り垂れ下がらない、硬さを有し、しかも、外力により曲
げることができる柔軟性をも兼ね備えた連続ロッド状成
形物中間体であり、直径の太い当該ロッド状成形物中間
体を提供することができた。このため、コンクリートや
プラスチックに埋め込んだ後に硬化させることができ、
取扱い性に優れていた。As described above, the present invention is a continuous rod-shaped molded product intermediate which has a hardness that does not hang down by its own weight, and has a flexibility that can be bent by an external force. Thus, the rod-shaped molded product intermediate having a large diameter could be provided. For this reason, it can be cured after embedding in concrete or plastic,
Excellent handleability.
【００４６】また、スプリングやコイル状のような複雑
形状の成形にも適し、機械的強度の優れた成形体を提供
できるものであった。。Further, it is suitable for forming a complicated shape such as a spring or a coil, and can provide a formed body having excellent mechanical strength. .
【図１】本発明の連続ロッド状中間体の概略図である。FIG. 1 is a schematic view of a continuous rod-shaped intermediate of the present invention.
【図２】本発明の連続ロッド状中間体製造装置の概略図
である。FIG. 2 is a schematic view of an apparatus for producing a continuous rod-shaped intermediate according to the present invention.
【図３】本発明の連続ロッド状中間体を芯金に巻きつけ
た様子を示した図である。FIG. 3 is a view showing a state in which the continuous rod-shaped intermediate of the present invention is wound around a cored bar.
１ 第１の強化繊維束 ２ 第２の強化繊維束 ３ ロッド状成形物中間体 ４ 芯金 DESCRIPTION OF SYMBOLS 1 1st reinforcing fiber bundle 2 2nd reinforcing fiber bundle 3 rod-shaped molded product intermediate 4 core metal
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｂ２９Ｌ 31:06 ──────────────────────────────────────────────────の Continued on front page (51) Int.Cl. 6 Identification code FI B29L 31:06
Claims (13)
化の熱硬化性マトリックス樹脂成分を含浸した炭素繊維
を含む長繊維束からなる第１の強化繊維束と、その外周
に配された第２の強化繊維とからなり、かつ第２の強化
繊維で第１の強化繊維束が結束さた連続ロッド状成形物
中間体であって、連続ロッド状成形物中間体が自身の自
重により垂れ下がらないような充分な硬さを有し、且つ
外力により曲げることができる柔軟性も兼ね備えたこと
を特徴とする連続ロッド状成形物中間体。A first reinforcing fiber bundle comprising a long fiber bundle containing carbon fibers impregnated with an uncured thermosetting matrix resin component, and a second reinforcing fiber bundle disposed on an outer periphery thereof. A continuous rod-shaped molded product intermediate made of a second reinforcing fiber and a second reinforcing fiber bundled with a first reinforcing fiber bundle, wherein the continuous rod-shaped molded product intermediate hangs down by its own weight. A continuous rod-shaped molded product intermediate material having sufficient hardness so as not to have any flexibility and also having flexibility capable of being bent by an external force.
ックス樹脂成分と強化繊維の合計に対する全強化繊維の
含有率が、５０体積％以上である請求項１記載の連続ロ
ッド状成形物中間体。2. The continuous rod-shaped molded product intermediate according to claim 1, wherein the content ratio of the total reinforcing fibers to the total of the thermosetting matrix resin component and the reinforcing fibers in the whole molded product intermediate is 50% by volume or more.
ックス樹脂成分を含浸した長繊維である、請求項１乃及
び２記載の連続ロッド状成形物中間体。3. The continuous rod-shaped molded product intermediate according to claim 1, wherein the second reinforcing fiber is a long fiber impregnated with an uncured thermosetting matrix resin component.
第２の強化繊維でスパイラル状に巻きつけられて結束さ
れていることを特徴とする請求項１乃至３記載の連続ロ
ッド状成形物中間体。4. The continuous rod according to claim 1, wherein the first reinforcing fiber bundle is spirally wound and bound by a second reinforcing fiber disposed on an outer periphery thereof. Shaped product intermediate.
織物、撚糸、合糸あるいはこれらを組合せたもので形成
されていることを特徴とする請求項１乃至４記載の連続
ロッド状成形物中間体。5. A braid, wherein the second reinforcing fiber disposed on the outer periphery is a braid,
The continuous rod-shaped molded product intermediate according to any one of claims 1 to 4, wherein the intermediate product is formed of a woven fabric, a twisted yarn, a combined yarn, or a combination thereof.
りを有する長繊維である請求項１乃至５記載の連続ロッ
ド状成形物中間体。6. The continuous rod-shaped molded product intermediate according to claim 1, wherein the second reinforcing fiber is a long fiber having a twist of 1 to 10 fibers / m.
以上含む繊維束である請求項１乃至６記載の連続ロッド
状成形物中間体。7. The first reinforcing fiber contains 50% by volume of carbon fiber.
7. The continuous rod-shaped molded product intermediate according to claim 1, which is a fiber bundle containing the above.
至７記載の連続ロッド状成形物中間体。8. The continuous rod-shaped molded product intermediate according to claim 1, which has a current-carrying electrode at a terminal portion.
８記載の連続ロッド状成形物中間体。9. The continuous rod-shaped molded product intermediate according to claim 1, wherein the rod diameter is 3 mm or more.
浸した第１の強化繊維束の外周に第２の強化繊維を、巻
き圧力１ｋｇ／ｍｍ2以上の巻き圧でスパイラル状に巻
き付け、第１の強化繊維束を第２の強化繊維で結束する
ことを特徴とする請求項１記載の連続ロッド状成形物中
間体の製造法。10. A first reinforcing fiber bundle impregnated with an uncured thermosetting matrix resin, and a second reinforcing fiber is spirally wound around the outer periphery of the first reinforcing fiber bundle at a winding pressure of 1 kg / mm 2 or more. 2. The method according to claim 1, wherein the reinforcing fiber bundle is bound by a second reinforcing fiber.
を含浸した炭素繊維を含む長繊維束からなる第１の強化
繊維束と、その外周に配された第２の強化繊維とからな
り、かつ第２の強化繊維で第１の強化繊維束が結束さた
連続ロッド状成形物中間体であって、連続ロッド状成形
物中間体が自身の自重により垂れ下がらないような充分
な硬さを有し、且つ外力により曲げることができる柔軟
性も兼ね備えた連続ロッド状成形物中間体に通電し、炭
素繊維の電気抵抗を利用して発熱させ、熱硬化性マトリ
ックス樹脂成分を硬化させることを特徴とする連続ロッ
ド状成形体の成形方法 。11. A first reinforcing fiber bundle comprising a long fiber bundle containing carbon fibers impregnated with an uncured thermosetting matrix resin component, and a second reinforcing fiber disposed on the outer periphery thereof, and A continuous rod-shaped molded product intermediate body in which a first reinforcing fiber bundle is bound by a second reinforcing fiber, and has a sufficient hardness so that the continuous rod-shaped molded product intermediate does not hang down by its own weight. And an electric current is applied to a continuous rod-shaped molded product intermediate body having flexibility that can be bent by an external force, and heat is generated by using the electric resistance of the carbon fiber to cure the thermosetting matrix resin component. Method of forming a continuous rod-shaped molded body.
を含浸した炭素繊維を含む長繊維束からなる第１の強化
繊維束と、その外周に配された第２の強化繊維とからな
り、かつ第２の強化繊維で第１の強化繊維束が結束さた
連続ロッド状成形物中間体であって、連続ロッド状成形
物中間体が自身の自重により垂れ下がらないような充分
な硬さを有し、且つ外力により曲げることができる柔軟
性も兼ね備えた連続ロッド状成形物中間体を、所望の形
状に整形し、次いで熱硬化性マトリックス樹脂成分を硬
化させることを特徴とする連続ロッド状成形体の成形方
法。12. A first reinforcing fiber bundle comprising a long fiber bundle containing carbon fibers impregnated with an uncured thermosetting matrix resin component, and a second reinforcing fiber disposed on the outer periphery thereof, and A continuous rod-shaped molded product intermediate body in which a first reinforcing fiber bundle is bound by a second reinforcing fiber, and has a sufficient hardness so that the continuous rod-shaped molded product intermediate does not hang down by its own weight. And forming a continuous rod-shaped molded product having flexibility that can be bent by an external force into a desired shape, and then curing the thermosetting matrix resin component. Molding method.
を含浸した炭素繊維を含む長繊維束からなる第１の強化
繊維束と、その外周に配された第２の強化繊維とからな
り、かつ第２の強化繊維で第１の強化繊維束が結束さた
連続ロッド状成形物中間体であって、連続ロッド状成形
物中間体が自身の自重により垂れ下がらないような充分
な硬さを有し、且つ外力により曲げることができる柔軟
性も兼ね備えた連続ロッド状成形物中間体を所望の形状
に整形し、次いで熱硬化性マトリックス樹脂成分を硬化
させてなる連続ロッド状成形体。13. A first reinforcing fiber bundle comprising a long fiber bundle containing carbon fibers impregnated with an uncured thermosetting matrix resin component, and a second reinforcing fiber disposed on an outer periphery thereof, and A continuous rod-shaped molded product intermediate body in which a first reinforcing fiber bundle is bound by a second reinforcing fiber, and has a sufficient hardness so that the continuous rod-shaped molded product intermediate does not hang down by its own weight. A continuous rod-like molded product obtained by shaping a continuous rod-like molded product intermediate having a flexibility that can be bent by an external force into a desired shape, and then curing a thermosetting matrix resin component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29805196A JP3672684B2 (en) | 1996-10-22 | 1996-10-22 | Continuous rod-shaped molded product intermediate, method for producing the same, molded product and molded method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29805196A JP3672684B2 (en) | 1996-10-22 | 1996-10-22 | Continuous rod-shaped molded product intermediate, method for producing the same, molded product and molded method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10119139A true JPH10119139A (en) | 1998-05-12 |
| JP3672684B2 JP3672684B2 (en) | 2005-07-20 |
Family
ID=17854503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29805196A Expired - Fee Related JP3672684B2 (en) | 1996-10-22 | 1996-10-22 | Continuous rod-shaped molded product intermediate, method for producing the same, molded product and molded method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3672684B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013006413A (en) * | 2011-06-10 | 2013-01-10 | Boeing Co:The | Boron fiber reinforced structural component |
-
1996
- 1996-10-22 JP JP29805196A patent/JP3672684B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013006413A (en) * | 2011-06-10 | 2013-01-10 | Boeing Co:The | Boron fiber reinforced structural component |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3672684B2 (en) | 2005-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5727357A (en) | Composite reinforcement | |
| EP0417612B1 (en) | Filament-reinforced resinous structural rod | |
| JP6035129B2 (en) | Composite FRP short wire for cement reinforcement and method for producing the same | |
| JPS61274036A (en) | Structural rod and reinforced structural member | |
| US6048598A (en) | Composite reinforcing member | |
| JP2010513751A (en) | Bendable fiber reinforced composite rebar | |
| JPH05148780A (en) | Production of rope composed of fiber-reinforced composite material | |
| EP0628674B1 (en) | Fiber-reinforced plastic rod and method of manufacturing the same | |
| WO1993016866A1 (en) | Electric hardening material, uses of the same and method of practically using the same | |
| JPH0132058B2 (en) | ||
| JP3088061B2 (en) | Fiber reinforced resin composite reinforced material and method for producing the same | |
| JPH0533278A (en) | Rope comprising carbon fiber-reinforced composite material and production thereof | |
| JP3967957B2 (en) | Manufacturing method of fiber reinforced resin strands | |
| JP3672684B2 (en) | Continuous rod-shaped molded product intermediate, method for producing the same, molded product and molded method thereof | |
| WO1995033109A1 (en) | Fibre reinforced resin composite reinforcing material and method for producing the same | |
| JPH06158873A (en) | Reinforcement or repair method for members using carbon-fiber reinforced composite material | |
| JPH05321178A (en) | Electrically curing material, electrically curing rope, member produced therefrom and application thereof | |
| JP4336432B2 (en) | Production method of thermoplastic resin-coated FRP bar for shear reinforcement and thermoplastic resin-coated FRP bar for shear reinforcement | |
| JPH06168775A (en) | Heater and manufacture thereof | |
| JPS6359981B2 (en) | ||
| JP2714735B2 (en) | Large diameter rod made of organic synthetic fiber | |
| KR20010028610A (en) | Hybrid bar and its product method and its fabric | |
| JP3064179B2 (en) | Curved fiber reinforced resin composite bar and method for producing the same | |
| JPH0245741B2 (en) | ||
| JPH05302401A (en) | Electric hardening material, electric hardening rope, member obtained therefrom and construction method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20040621 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20040713 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20040907 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20050329 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20050420 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080428 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090428 Year of fee payment: 4 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090428 Year of fee payment: 4 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100428 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100428 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110428 Year of fee payment: 6 |
|
| LAPS | Cancellation because of no payment of annual fees |