JP2010275657A - Wholly aromatic polyamide fiber - Google Patents
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- JP2010275657A JP2010275657A JP2009128982A JP2009128982A JP2010275657A JP 2010275657 A JP2010275657 A JP 2010275657A JP 2009128982 A JP2009128982 A JP 2009128982A JP 2009128982 A JP2009128982 A JP 2009128982A JP 2010275657 A JP2010275657 A JP 2010275657A
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- 239000000835 fiber Substances 0.000 title claims abstract description 56
- 239000004760 aramid Substances 0.000 title claims abstract description 34
- 229920003235 aromatic polyamide Polymers 0.000 title claims abstract description 32
- 239000011347 resin Substances 0.000 claims abstract description 24
- 229920005989 resin Polymers 0.000 claims abstract description 24
- 239000011159 matrix material Substances 0.000 claims abstract description 14
- 229920001515 polyalkylene glycol Polymers 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000000805 composite resin Substances 0.000 claims description 5
- 238000000465 moulding Methods 0.000 abstract description 9
- 239000008041 oiling agent Substances 0.000 abstract 1
- 229920001187 thermosetting polymer Polymers 0.000 description 7
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 6
- 239000002131 composite material Substances 0.000 description 5
- 125000003118 aryl group Chemical group 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 4
- -1 isoppropyl group Chemical group 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 3
- 229920006231 aramid fiber Polymers 0.000 description 3
- 238000007334 copolymerization reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 125000001140 1,4-phenylene group Chemical group [H]C1=C([H])C([*:2])=C([H])C([H])=C1[*:1] 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 description 2
- 125000002947 alkylene group Chemical group 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 229920006253 high performance fiber Polymers 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 239000012783 reinforcing fiber Substances 0.000 description 2
- 125000001989 1,3-phenylene group Chemical group [H]C1=C([H])C([*:1])=C([H])C([*:2])=C1[H] 0.000 description 1
- BYLSIPUARIZAHZ-UHFFFAOYSA-N 2,4,6-tris(1-phenylethyl)phenol Chemical compound C=1C(C(C)C=2C=CC=CC=2)=C(O)C(C(C)C=2C=CC=CC=2)=CC=1C(C)C1=CC=CC=C1 BYLSIPUARIZAHZ-UHFFFAOYSA-N 0.000 description 1
- 125000005662 2,5-pyridylene group Chemical group [H]C1=NC([*:1])=C([H])C([H])=C1[*:2] 0.000 description 1
- 125000004959 2,6-naphthylene group Chemical group [H]C1=C([H])C2=C([H])C([*:1])=C([H])C([H])=C2C([H])=C1[*:2] 0.000 description 1
- BMMNUXLWZAHXNL-UHFFFAOYSA-N 3-benzyl-2-phenylphenol Chemical compound C=1C=CC=CC=1C=1C(O)=CC=CC=1CC1=CC=CC=C1 BMMNUXLWZAHXNL-UHFFFAOYSA-N 0.000 description 1
- LVGKZTVMAHRVFR-UHFFFAOYSA-N 4-(phenoxazine-10-carbonyl)benzamide Chemical compound C1=CC(C(=O)N)=CC=C1C(=O)N1C2=CC=CC=C2OC2=CC=CC=C21 LVGKZTVMAHRVFR-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 229920000271 Kevlar® Polymers 0.000 description 1
- 239000005639 Lauric acid Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229920001494 Technora Polymers 0.000 description 1
- 229920000561 Twaron Polymers 0.000 description 1
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 206010061592 cardiac fibrillation Diseases 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 230000002600 fibrillogenic effect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 125000005843 halogen group Chemical group 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
- 150000002440 hydroxy compounds Chemical class 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- XRQKARZTFMEBBY-UHFFFAOYSA-N oxiran-2-ylmethyl benzoate Chemical compound C=1C=CC=CC=1C(=O)OCC1CO1 XRQKARZTFMEBBY-UHFFFAOYSA-N 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920001281 polyalkylene Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 238000011417 postcuring Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004950 technora Substances 0.000 description 1
- 239000004762 twaron Substances 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
Description
本発明は、樹脂補強用効果に優れ、特に熱硬化性樹脂に適した全芳香族ポリアミド繊維に関する。 The present invention relates to a wholly aromatic polyamide fiber which is excellent in resin reinforcing effect and particularly suitable for a thermosetting resin.
全芳香族ポリアミド繊維、いわゆるアラミド繊維は高機能繊維の代表として、その耐熱性、高強力、高モジュラス、耐薬品性等の特徴を生かし、マトリックス樹脂の補強用繊維として軽量、高強力、高剛性の要求される分野で実用化されている。 Fully aromatic polyamide fibers, so-called aramid fibers, are representative of high-performance fibers, taking advantage of their heat resistance, high strength, high modulus, chemical resistance, etc., and lightweight, high strength, high rigidity as reinforcing fibers for matrix resins. Has been put to practical use in the required fields.
そしてたとえば、ラケット、ゴルフクラブ及び竿等のスポーツ、レジャー用具や、車の内外装部品、航空機の部材の原料として、多条の繊維を一方向に引き揃えたシート状物に熱硬化性樹脂を含浸させた全芳香族のポリアミド繊維のプリプレク゛シートが用いられている。同様な用途に用いられている炭素繊維及びガラス繊維に対し、さらなる耐衝撃性及び軽量化を可能とする材料として、複合、補助材料として脚光をあびているのである。 And for example, as a raw material for sports and leisure equipment such as rackets, golf clubs and bags, car interior and exterior parts, aircraft members, thermosetting resin is applied to a sheet-like material in which multiple fibers are aligned in one direction. A prepreg sheet of wholly aromatic polyamide fibers impregnated is used. As a material that enables further impact resistance and lighter weight than carbon fibers and glass fibers used in similar applications, it has attracted attention as a composite and auxiliary material.
しかし一般に複合材料用のマトリックス樹脂としては、エポキシ系、不飽和ポリエステル系及びエポキシアクリレート系が主流であるが、繊維とマトリックス樹脂との接着性もまた、大きな課題の一つである。なぜならアラミド繊維を構成する芳香族アミンは脂肪族アミンに比べ、アミン基が隣接するフェニル基の影響で塩基性が極めて弱いので、極性及び反応性を有する熱硬化性マトリックス樹脂と親和性及び反応性が低いのである。 In general, however, epoxy resins, unsaturated polyester resins, and epoxy acrylate resins are the mainstream as matrix resins for composite materials. Adhesion between fibers and matrix resins is also a major problem. This is because the aromatic amine composing the aramid fiber is much less basic than the aliphatic amine due to the phenyl group adjacent to the amine group, so it has affinity and reactivity with the thermosetting matrix resin with polarity and reactivity. Is low.
また、アラミド繊維は繊維軸方向では卓越した力を発揮するものの、繊維の直角の方向では繊維軸方向の配向性、結晶性が高すぎるためフィブリル化がおこり易いという問題がある。そして炭素繊維及びガラス繊維に比べ、全芳香族のポリアミド繊維は、弾性率、剛直性が低いために、成形時の開繊性及びシートの均一性を得るために、高い張力下でガイド等に接触させることが必要とされる。すなわち、元来、擦過によりフィブリル化しやすい全芳香族のポリアミド繊維に対し、さらに毛羽が発生し、シートの均一性が低下する条件下での加工が要求されるのである。このような毛羽による欠点が発生した場合、当然ながら補強効果が低下するという問題があった。 In addition, although aramid fibers exhibit an excellent force in the fiber axis direction, there is a problem that in the direction perpendicular to the fiber, the orientation and crystallinity in the fiber axis direction are too high, so that fibrillation is likely to occur. Compared to carbon fiber and glass fiber, wholly aromatic polyamide fiber has low elastic modulus and rigidity, so it can be used as a guide under high tension to obtain spreadability and sheet uniformity during molding. Contact is required. That is, originally, a fully aromatic polyamide fiber which is easily fibrillated by rubbing is required to be processed under conditions where further fluff is generated and the uniformity of the sheet is lowered. When such a flaw is caused, there is a problem that the reinforcing effect is naturally lowered.
これらの問題に対し、例えば特許文献1では、接着性の向上方法として、繊維表面に固体状カチオン交換性無機化合物が固着された全芳香族ポリアミド繊維表面に特定の分子量及び共重合比のプロピレンオキシドとエチレンオキシドとの共重合体を付与することが提案されている。しかし、油膜強度が低く、成形時にガイド等の擦過により単糸切れが発生し、製品の均一性に乏しく、その接着性も満足のいくものではなかった。 In order to solve these problems, for example, in Patent Document 1, as a method for improving adhesiveness, propylene oxide having a specific molecular weight and copolymerization ratio on the surface of a wholly aromatic polyamide fiber in which a solid cation-exchangeable inorganic compound is fixed on the fiber surface. It has been proposed to provide a copolymer of ethylene oxide. However, the oil film strength was low, single yarn breakage occurred due to rubbing of a guide or the like during molding, the uniformity of the product was poor, and the adhesiveness was not satisfactory.
また、特許文献2では、繊維表面に無機粉末を付与し、かつ低交絡数の無撚の高機能繊維が提案されている。開繊性向上や、成形時にかかる繊維への張力の低減を目的とするものである。しかし毛羽発生や接着性向上に対しては、その効果において充分な満足のいくものではなかった。
成形加工性と接着性良好な熱硬化性樹脂補強に好適な全芳香族ポリアミド繊維の開発が望まれていたのである。
Further, Patent Document 2 proposes an untwisted high-performance fiber having an inorganic powder applied to the fiber surface and having a low entanglement number. The purpose is to improve the spreadability and reduce the tension applied to the fiber during molding. However, for the generation of fuzz and the improvement of adhesion, the effect was not fully satisfactory.
Development of wholly aromatic polyamide fibers suitable for thermosetting resin reinforcement with good moldability and adhesiveness has been desired.
本発明は、マトリックス樹脂との接着性に優れ、かつ成形時の開繊性にすぐれ、単糸切れが少ない全芳香族ポリアミド繊維を提供することにある。 An object of the present invention is to provide a wholly aromatic polyamide fiber which is excellent in adhesiveness with a matrix resin, has excellent openability at the time of molding, and has few single yarn breakage.
本発明の全芳香族ポリアミド繊維は、単糸繊度が0.1〜4dtexである全芳香族ポリアミド繊維の表面に、ポリアルキレングリコール成分と芳香族アルキレンオキシド付加物とを重量比70/30〜95/5で含有する油剤が、0.5〜3.0重量%付着していることを特徴とする。
また、本発明の繊維樹脂複合体は、上記本発明の全芳香族ポリアミド繊維によりマトリックス樹脂を補強したものである。
The wholly aromatic polyamide fiber of the present invention has a polyalkylene glycol component and an aromatic alkylene oxide adduct in a weight ratio of 70/30 to 95 on the surface of a wholly aromatic polyamide fiber having a single yarn fineness of 0.1 to 4 dtex. The oil agent contained in / 5 adheres 0.5 to 3.0% by weight.
The fiber resin composite of the present invention is obtained by reinforcing a matrix resin with the wholly aromatic polyamide fiber of the present invention.
本発明によれば、マトリックス樹脂との接着性に優れ、かつ成形時の開繊性にすぐれ、単糸切れが少ない全芳香族ポリアミド繊維が提供される。 According to the present invention, there is provided a wholly aromatic polyamide fiber that is excellent in adhesiveness with a matrix resin, has excellent fiber-opening property at the time of molding, and has few single yarn breakage.
以下、本発明の実施の形態について詳細に説明する。
本発明でいう全芳香族ポリアミド繊維は、パラ系芳香族ポリアミド繊維、メタ系ポリアミド繊維、あるいはそれぞれの共重合体である。芳香族環として例えば、1,4−フェニレン基、1,3−フェニレン基、4,4’−ビスフェニレン基、1,5−ナフチレン基、2,6−ナフチレン基、2,5−ピリジレン基等を挙げることができるが、好ましくは1,4−フェニレン基である。芳香族環に例えばハロゲン基、(例えば塩素、臭素、フッ素)、低級アルキル基(メチル基、エチル基、イソフプロピル基、n−プロピル基)、シアノ基、アセチル基、ニトロ基などを含んでも良い。具体例としてはポリパラフェニレンテレフタルアミド(帝人テクノプロダクツ株式会社製「トワロン」、東レデュポン株式会社製「ケブラー」など)、ポリメタフェニレンイソフタールアミド(帝人テクノプロダクツ株式会社製「コーネックス」)、ポリパラアミノベンズアミド、ポリ−3,4’オキシジフェニレンテレフタルアミド/ポリパラフェニレンテレフタルアミド共重合体(帝人テクノプロダクツ株式会社製「テクノーラ」など)、ポリパラアミノベンズヒドラジテレフタルアミド等からなる繊維である。
Hereinafter, embodiments of the present invention will be described in detail.
The wholly aromatic polyamide fiber referred to in the present invention is a para-aromatic polyamide fiber, a meta-polyamide fiber, or a copolymer thereof. Examples of aromatic rings include 1,4-phenylene group, 1,3-phenylene group, 4,4′-bisphenylene group, 1,5-naphthylene group, 2,6-naphthylene group, 2,5-pyridylene group and the like. Among them, 1,4-phenylene group is preferable. The aromatic ring may contain, for example, a halogen group (for example, chlorine, bromine, fluorine), a lower alkyl group (methyl group, ethyl group, isoppropyl group, n-propyl group), cyano group, acetyl group, nitro group and the like. . Specific examples include polyparaphenylene terephthalamide (“Twaron” manufactured by Teijin Techno Products Co., Ltd., “Kevlar” manufactured by Toray DuPont Co., Ltd.), polymetaphenylene isophthalamide (“Conex” manufactured by Teijin Techno Products Co., Ltd.), It is a fiber made of polyparaaminobenzamide, poly-3,4'oxydiphenylene terephthalamide / polyparaphenylene terephthalamide copolymer (such as “Technora” manufactured by Teijin Techno Products Limited), polyparaaminobenzhydraterephthalamide, etc. .
本発明の全芳香族ポリアミド繊維の単糸繊度としては、0.1〜4dtexであることが必要であり、さらには0.5〜2dtexであることが、本発明の目的を達成する上で好ましい。単糸繊度が0.1dtex未満では製糸性に問題が生じたり、成形時に単糸切れが発生する。逆に4dtexを超えると、マトリックス樹脂との有効な接着面積が小さくなり、補強効果が低下する。 The single yarn fineness of the wholly aromatic polyamide fiber of the present invention needs to be 0.1 to 4 dtex, and more preferably 0.5 to 2 dtex in order to achieve the object of the present invention. . When the single yarn fineness is less than 0.1 dtex, there is a problem in the yarn forming property, or single yarn breakage occurs during molding. On the other hand, if it exceeds 4 dtex, the effective bonding area with the matrix resin is reduced, and the reinforcing effect is lowered.
本発明の全芳香族ポリアミド繊維は、その表面に、ポリアルキレングリコール成分(A成分)と芳香族アルキレンオキシド付加物(B成分)とを含有する油剤が、0.5〜3.0%付着しているものである。 In the wholly aromatic polyamide fiber of the present invention, 0.5 to 3.0% of an oil containing a polyalkylene glycol component (component A) and an aromatic alkylene oxide adduct (component B) adheres to the surface. It is what.
この本発明の油剤に用いられるポリアルキレングリコール(A成分)は、エチレンオキシド、プロピレンオキシド等のアルキレンオキシドを重合又は共重合して得られるものである。その平均分子量としては2000以下、さらには700〜1000のものが好ましく用いられる。特にエチレンオキシドの共重合割合が高いものであることが好ましい。 The polyalkylene glycol (component A) used in the oil agent of the present invention is obtained by polymerizing or copolymerizing alkylene oxides such as ethylene oxide and propylene oxide. The average molecular weight is preferably 2000 or less, more preferably 700 to 1000. It is particularly preferable that the copolymerization ratio of ethylene oxide is high.
また、これらのポリアルキレングリコールの片末端又は両末端はエステル結合を介して封鎖されているものが、本発明には好適である。特に片末端が封鎖されたものであることが、分子量も小さく毛羽発生を有効に防止できるために好ましく、相溶性と接着性が高いレベルで両立する。またこのとき、ポリアルキレングリコール成分の封鎖に用いられるものが高級脂肪酸であることが好ましい。 Also, one or both ends of these polyalkylene glycols are preferably blocked with an ester bond in the present invention. In particular, it is preferable that one end is blocked because the molecular weight is small and fluff generation can be effectively prevented, and both compatibility and adhesiveness are compatible. At this time, it is preferable that a higher fatty acid is used for blocking the polyalkylene glycol component.
本発明では、このポリアルキレングリコール成分(A成分)とともに、芳香族アルキレンオキシド付加物(B成分)が油剤の成分として用いられる。この芳香族ポリアルキレン付加物(B成分)は、芳香環を有するヒドロキシ化合物に、アルキレンオキシド特にエチレンオキシドを付加したものであることが好ましい。より具体的には、ノニルフェノール、ベンジルフェニルフェノール、スチレン化フェノールなどのフェノール類のエチレンオキサイド付加物が例示される。このようなB成分を用いることにより本発明では樹脂、特に熱硬化性樹脂と全芳香族ポリアミド繊維との高い接着性を確保することができるように成ったのである。 In this invention, an aromatic alkylene oxide adduct (B component) is used as a component of an oil agent with this polyalkylene glycol component (A component). The aromatic polyalkylene adduct (component B) is preferably a compound obtained by adding alkylene oxide, particularly ethylene oxide, to a hydroxy compound having an aromatic ring. More specifically, ethylene oxide adducts of phenols such as nonylphenol, benzylphenylphenol, and styrenated phenol are exemplified. By using such a B component, in the present invention, high adhesion between a resin, particularly a thermosetting resin and a wholly aromatic polyamide fiber can be secured.
本発明の全芳香族ポリアミド繊維は、その繊維表面に上記のA成分/B成分の重量比が70/30〜95/5の割合で含有する油剤が付着したものである。A成分の比が70以下では、マトリックス樹脂との親和性が乏しくなり、接着性が低下し、補強効果が低下する。一方、B成分の重量比が5以下では、平滑性能が乏しく、成形時の単糸切れの抑制効果が得られない。 In the wholly aromatic polyamide fiber of the present invention, an oil agent containing the above-mentioned A component / B component in a weight ratio of 70/30 to 95/5 adheres to the fiber surface. When the ratio of the component A is 70 or less, the affinity with the matrix resin is poor, the adhesiveness is lowered, and the reinforcing effect is lowered. On the other hand, when the weight ratio of the B component is 5 or less, the smoothing performance is poor, and the effect of suppressing single yarn breakage during molding cannot be obtained.
このような油剤の繊維に対する付着量としては、全芳香族ポリアミド繊維に、0.5〜3.0重量%付与されたものであることが必要である。付着量が0.5重量%以下では平滑性能が低下し、成形時の単糸切れの抑制効果が得られない。一方、油剤付着量が3.0重量%以上の場合には、マトリックス樹脂との接着性を妨げ、本発明の目的とする高い補強効果を得ることができない。 The amount of the oil agent attached to the fiber needs to be 0.5 to 3.0% by weight applied to the wholly aromatic polyamide fiber. When the adhesion amount is 0.5% by weight or less, the smoothing performance is deteriorated, and the effect of suppressing breakage of single yarn during molding cannot be obtained. On the other hand, when the oil agent adhesion amount is 3.0% by weight or more, the adhesion with the matrix resin is hindered, and the high reinforcing effect intended by the present invention cannot be obtained.
このような本発明の全芳香族ポリアミド繊維は、広く複合材料の補強用繊維として用いられるが、特にはマトリクス樹脂が熱硬化性樹脂である繊維樹脂複合体に用いられることが好ましい。本発明の全芳香族ポリアミド繊維によりマトリックス樹脂を補強した繊維樹脂複合体は、繊維と樹脂との接着性が高いために、極めて高い物性を有する複合材料となるのである。 Such a wholly aromatic polyamide fiber of the present invention is widely used as a reinforcing fiber for composite materials, and is particularly preferably used for a fiber resin composite in which the matrix resin is a thermosetting resin. The fiber resin composite in which the matrix resin is reinforced with the wholly aromatic polyamide fiber of the present invention is a composite material having extremely high physical properties because of high adhesiveness between the fiber and the resin.
以下、実施例を挙げて本発明をより詳細に説明する。なお、実施例中の測定値は以下の方法で測定した。 Hereinafter, the present invention will be described in more detail with reference to examples. In addition, the measured value in an Example was measured with the following method.
(1)繊度
JIS−L1013に準拠して測定した。
(1) Fineness It measured based on JIS-L1013.
(2)油剤相溶性
常温にて、各成分を混合し、相溶性を目視判定した。各成分分離無く、均一な場合を良(○)、分離する場合を不良(×)と判断した。
(2) Oil agent compatibility Each component was mixed at normal temperature and the compatibility was visually determined. Without separation of each component, a uniform case was judged as good (◯), and a case where it was separated was judged as poor (×).
(3)開繊性
図1に示すように、ボビン1.に捲かれたマルチフフィラメント4.を3m/minの速度で引出し、上下に配置した梨地の固定棒ガイド(2a〜2f)を通過させ、2本の棒ガイド2eと2f間との張力が1.0g/dtexとなるように調節して巻き取った。棒ガイド2eの上側を通過する際のマルチフィラメントの繊維幅を測定し、開繊性とした。
(3) Opening property As shown in FIG. Multifilament sprinkled on Is pulled out at a speed of 3 m / min, passed through the fixed bar guides (2a to 2f) arranged on the top and bottom, and adjusted so that the tension between the two
(4)製品品位
開繊性を評価するのと同様の条件で10分間マルチフィラメントを巻き取り、該巻き取られたサンプルの表面を目視で観察し、毛羽の有無から製品品位を判断した。毛羽の発生がない場合を良(○)、毛羽が発生している場合を不可(×)とした。
(4) Product quality The multifilament was wound up for 10 minutes under the same conditions as for evaluating the spreadability, the surface of the wound sample was visually observed, and the product quality was judged from the presence or absence of fluff. The case where fluff was not generated was evaluated as good (◯), and the case where fluff was generated was determined as impossible (×).
(5)接着性(層間せん断強度:ILSSと略称する)
エポキシ樹脂として、エピコート828(シェル化学社製)を67重量%、エポメートB001W(シェル化学社製)を27重量%、デナコールEX−191(ナガセケムテックス社製)を6重量%の比率で混合したものを用いた。該エポキシ樹脂混合物に繊維を浸漬させ、その繊維を一方向に引き揃えた状態で硬化処理を施した。硬化条件は、室温で48時間放置後、120℃で2時間加圧して硬化せしめたのち、さらに180℃で1時間後硬化処理を行った。このようにして得られた成形物(繊維含有率60%)より長さ20mm、幅6mm、厚さ3mmの試験片を作成し、ショートビーム3点曲げ法によりスパン間隔13mm、クロスヘッド速度1.0mm/分にて、層間せん断強度(ILSS:単位kg/mm2)測定した。
(5) Adhesiveness (interlaminar shear strength: abbreviated as ILSS)
As an epoxy resin, Epicoat 828 (manufactured by Shell Chemical Co., Ltd.) was mixed at a ratio of 67% by weight, Epomate B001W (manufactured by Shell Chemical Co., Ltd.) at 27% by weight, and Denacol EX-191 (manufactured by Nagase ChemteX) at a ratio of 6% by weight. A thing was used. Fibers were immersed in the epoxy resin mixture, and a curing treatment was performed with the fibers aligned in one direction. The curing condition was that after standing at room temperature for 48 hours, pressurizing at 120 ° C. for 2 hours to cure, and then performing a post-curing treatment at 180 ° C. for 1 hour. A test piece having a length of 20 mm, a width of 6 mm, and a thickness of 3 mm was prepared from the molded product thus obtained (fiber content: 60%), and a span interval of 13 mm and a crosshead speed of 1. Interlaminar shear strength (ILSS: unit kg / mm 2 ) was measured at 0 mm / min.
[実施例1〜3、比較例1,2]
表1記載の単糸繊度の全芳香族ポリアミド繊維を製糸し、その表面に製糸油剤を表1記載の付着量となるように付与、乾燥し、最後に巻き取った。製糸油剤は、ポリアルキレングリコール成分として、プロピレンオキシド/エチレンオキシドの共重合比が30/70で、ラウリン酸により片末端を封鎖した分子量780の(A成分)と、芳香族アルキレンオキシド付加物としてPOE(10)ノニルフェノールである(B成分)とからなり、A成分/B成分比が90/10のものである。
最後に得られた繊維を用いて(5)接着性の評価方法に従って、エポキシ樹脂と全芳香族ポリアミド繊維からなる繊維樹脂複合体を作成した。各繊維の詳細及び各種評価結果を表1に併せて示した。
[Examples 1 to 3, Comparative Examples 1 and 2]
A fully aromatic polyamide fiber having a single yarn fineness described in Table 1 was spun, and a thread-forming oil was applied to the surface so as to have an adhesion amount shown in Table 1, dried, and finally wound up. The yarn-producing oil has a propylene oxide / ethylene oxide copolymerization ratio of 30/70 as a polyalkylene glycol component, a molecular weight of 780 (component A) blocked at one end with lauric acid, and a POE (aromatic alkylene oxide adduct) as a polyalkylene glycol component. 10) It consists of (B component) which is nonylphenol, and A component / B component ratio is 90/10.
The fiber resin composite which consists of an epoxy resin and a wholly aromatic polyamide fiber was created according to the evaluation method of (5) adhesiveness using the fiber finally obtained. Details of each fiber and various evaluation results are also shown in Table 1.
このような本発明の全芳香族ポリアミド繊維は、接着性が高く、毛羽発生も少ないため、高い物性を有する複合材料に用いられる。特に、熱硬化性樹脂を含浸させたプリプレク゛シートとして好適に用いられ、ラケット、ゴルフクラブ及び竿等のスポーツ、レジャー用具や、車の内外装部品、航空機の部材の原料として最適である。 Such a wholly aromatic polyamide fiber of the present invention has high adhesiveness and little fluff generation, and therefore is used for a composite material having high physical properties. In particular, it is suitably used as a prepreg sheet impregnated with a thermosetting resin, and is optimal as a raw material for sports and leisure equipment such as rackets, golf clubs and bags, interior and exterior parts of vehicles, and aircraft members.
1:評価サンプル
2a〜2f:棒ガイド
3:巻取りボビン
4:走行糸
1: Evaluation samples 2a to 2f: Bar guide 3: Winding bobbin 4: Traveling yarn
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JP2012082551A (en) * | 2010-10-12 | 2012-04-26 | Teijin Techno Products Ltd | Aromatic polyamide staple fiber for friction material |
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JP2012082551A (en) * | 2010-10-12 | 2012-04-26 | Teijin Techno Products Ltd | Aromatic polyamide staple fiber for friction material |
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