JP2014181418A5 - - Google Patents

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JP2014181418A5
JP2014181418A5 JP2013056148A JP2013056148A JP2014181418A5 JP 2014181418 A5 JP2014181418 A5 JP 2014181418A5 JP 2013056148 A JP2013056148 A JP 2013056148A JP 2013056148 A JP2013056148 A JP 2013056148A JP 2014181418 A5 JP2014181418 A5 JP 2014181418A5
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Prior art keywords
sizing agent
carbon fiber
epoxy
epoxy compound
coated carbon
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JP2013056148A
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JP2014181418A (en
JP6051987B2 (en
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Claims (14)

炭素繊維に、分子内に水酸基とエポキシ基を有するエポキシ化合物(A)を主成分として含むサイジング剤を塗布したサイジング剤塗布炭素繊維であって、前記サイジング剤には、窒素あるいはリン含有量で1.3質量%以下となる硬化剤を含んでおり、かつ、前記サイジング剤塗布炭素繊維をN,N−ジメチルホルムアミド溶媒に浸漬し超音波処理することで溶出した前記サイジング剤の水酸基価(a)meq./gとエポキシ価(b)meq./gが、下記(I)から(III)を満たすことを特徴とするサイジング剤塗布炭素繊維。
(I)8≦(a)+(b)≦16
(II)(a)/(b)≧2
(III)(b)≧0.5
A sizing agent-coated carbon fiber obtained by coating a carbon fiber with a sizing agent containing an epoxy compound (A) having a hydroxyl group and an epoxy group in the molecule as a main component. The sizing agent has a nitrogen or phosphorus content of 1 A hydroxyl value (a) of the sizing agent, which contains a curing agent of 3% by mass or less and is eluted by immersing the sizing agent-coated carbon fiber in a N, N-dimethylformamide solvent and subjecting it to ultrasonic treatment. meq. / G and epoxy value (b) meq. A sizing agent-coated carbon fiber, wherein / g satisfies the following (I) to (III):
(I) 8 ≦ (a) + (b) ≦ 16
(II) (a) / (b) ≧ 2
(III) (b) ≧ 0.5
前記エポキシ化合物(A)が分子内にハロゲンを含み、X線光電子分光法によって測定される前記サイジング剤塗布炭素繊維の表面のハロゲン/炭素が0.005〜0.030である、請求項1記載のサイジング剤塗布炭素繊維。 The said epoxy compound (A) contains a halogen in a molecule | numerator, The halogen / carbon of the surface of the said sizing agent application | coating carbon fiber measured by a X ray photoelectron spectroscopy is 0.005-0.030. Sizing agent coated carbon fiber. 前記溶出したサイジング剤の重量平均分子量が1000〜5000である、請求項1または2記載のサイジング剤塗布炭素繊維。 Sizing agent application | coating carbon fiber of Claim 1 or 2 whose weight average molecular weights of the said eluted sizing agent are 1000-5000. 前記溶出したサイジング剤の水酸基価(a)meq./gが、下記(IV)を満たす、請求項1から3のいずれか一項記載のサイジング剤塗布炭素繊維。
(IV)(a)≧9
Hydroxyl value of the eluted sizing agent (a) meq. The sizing agent-coated carbon fiber according to any one of claims 1 to 3, wherein / g satisfies the following (IV).
(IV) (a) ≧ 9
前記エポキシ化合物(A)が脂肪族エポキシ化合物(A1)である、請求項1から4のいずれか一項記載のサイジング剤塗布炭素繊維。 The sizing agent-coated carbon fiber according to any one of claims 1 to 4, wherein the epoxy compound (A) is an aliphatic epoxy compound (A1). 前記脂肪族エポキシ化合物(A1)がグリセロール、ジグリセロール、ポリグリセロール、トリメチロールプロパン、ペンタエリスリトール、ソルビトール、およびアラビトールから選択される1種と、エピクロロヒドリンとの反応により得られるグリシジルエーテル型エポキシ化合物である、請求項5に記載のサイジング剤塗布炭素繊維。 Glycidyl ether type epoxy obtained by reacting the aliphatic epoxy compound (A1) with one selected from glycerol, diglycerol, polyglycerol, trimethylolpropane, pentaerythritol, sorbitol, and arabitol, and epichlorohydrin Sizing agent application | coating carbon fiber of Claim 5 which is a compound. 下記(V)または/および(VI)を満たす工程を含む、請求項1から6のいずれか一項記載のサイジング剤塗布炭素繊維の製造方法。
(V)水存在下20〜150℃で0.5〜20000時間熱処理したエポキシ化合物(A)を主成分とするサイジング剤含有液を炭素繊維に塗布する工程
(VI)エポキシ化合物(A)を主成分とするサイジング剤含有液を炭素繊維に塗布し乾燥後に、さらに20〜150℃、湿度50〜90%の湿潤下で20〜20000時間熱処理する工程
The manufacturing method of the sizing agent application | coating carbon fiber as described in any one of Claim 1 to 6 including the process of satisfy | filling following (V) or / and (VI).
(V) A step of applying a sizing agent-containing liquid mainly composed of an epoxy compound (A) heat-treated at 20 to 150 ° C. for 0.5 to 20000 hours in the presence of water on carbon fiber (VI) mainly comprising the epoxy compound (A) A step of applying a sizing agent-containing liquid as a component to carbon fibers and drying, followed by heat treatment at 20 to 150 ° C. and a humidity of 50 to 90% for 20 to 20000 hours
前記(V)に示す熱処理をする前のエポキシ価(b1)と熱処理をした後のエポキシ価(b2)、および前記(VI)に示す熱処理をする前のエポキシ価(b3)と熱処理をした後のエポキシ価(b4)が、下記(VII)を満たす、請求項7記載のサイジング剤塗布炭素繊維の製造方法。
(VII)1.5≦[(b1)/(b2)]×[(b3)/(b4)]≦10
After heat treatment with epoxy value (b2) before heat treatment shown in (V) and epoxy value (b2) after heat treatment and epoxy value (b3) before heat treatment shown in (VI) The sizing agent-coated carbon fiber according to claim 7, wherein the epoxy value (b4) of the sizing agent satisfies the following (VII).
(VII) 1.5 ≦ [(b1) / (b2)] × [(b3) / (b4)] ≦ 10
請求項1から6のいずれか一項記載のサイジング剤塗布炭素繊維と、熱硬化性樹脂を含む、プリプレグ。 And sizing agent applying carbon textiles of any one of claims 1 6, comprising a thermosetting resin, the prepreg. 前記熱硬化性樹脂はエポキシ化合物と潜在性硬化剤(B)とを含有する、請求項9記載のプリプレグ。 The prepreg according to claim 9, wherein the thermosetting resin contains an epoxy compound and a latent curing agent (B). 前記潜在性硬化剤(B)はジフェニルスルフォン骨格を含有する芳香族アミン硬化剤(B1)である、請求項10記載のプリプレグ。 The prepreg according to claim 10, wherein the latent curing agent (B) is an aromatic amine curing agent (B1) containing a diphenylsulfone skeleton. 前記潜在性硬化剤(B)はジシアンジアミドまたはその誘導体(B2)である、請求項10記載のプリプレグ。 The prepreg according to claim 10, wherein the latent curing agent (B) is dicyandiamide or a derivative thereof (B2). 請求項9から12記載のプリプレグを成形してなることを特徴とする炭素繊維強化複合材料。 A carbon fiber-reinforced composite material obtained by molding the prepreg according to claim 9. 請求項1から6のいずれか一項記載のサイジング剤塗布炭素繊維と熱硬化性樹脂の硬化物を含むことを特徴とする繊維強化複合材料。 Fiber-reinforced composite material which comprises a cured product of claim sizing agent according to any one claim of claim 1 to 6 coated carbon textiles and a thermosetting resin.
JP2013056148A 2013-03-19 2013-03-19 Method for producing carbon fiber coated with sizing agent Active JP6051987B2 (en)

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JP2014181418A JP2014181418A (en) 2014-09-29
JP2014181418A5 true JP2014181418A5 (en) 2016-01-28
JP6051987B2 JP6051987B2 (en) 2016-12-27

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JP6752549B2 (en) * 2015-03-30 2020-09-09 東レ株式会社 Integrated structure and unidirectional fiber reinforced resin tape
JP6420719B2 (en) * 2015-05-15 2018-11-07 本田技研工業株式会社 Fiber-reinforced thermoplastic resin and method for producing the same
WO2017033683A1 (en) * 2015-08-21 2017-03-02 国立大学法人九州大学 Composite material-forming composition, method for producing composite material, and composite material
CN106592242B (en) * 2015-10-14 2020-11-06 中国石油化工股份有限公司 Modified epoxy resin large tow universal carbon fiber sizing agent, preparation method and application thereof
CN106589313B (en) * 2015-10-14 2020-09-04 中国石油化工股份有限公司 Unsaturated acid modified epoxy resin universal carbon fiber sizing agent, preparation method and application thereof
CN106592241B (en) * 2015-10-14 2020-11-06 中国石油化工股份有限公司 Modified epoxy resin small tow universal carbon fiber sizing agent, preparation method and application thereof
WO2024090196A1 (en) * 2022-10-24 2024-05-02 東レ株式会社 Carbon fiber bundle, and carbon fiber-reinforced composite material using same

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JP2007016121A (en) * 2005-07-07 2007-01-25 Toray Ind Inc Prepreg for composite material and composite material
CN101313106A (en) * 2005-11-25 2008-11-26 东丽株式会社 Carbon fiber bundle, prepreg, and carbon fiber reinforced composite material
JP5477312B2 (en) * 2010-03-18 2014-04-23 東レ株式会社 Sizing agent-coated carbon fiber bundle and method for producing the same

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