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公开(公告)号：JP2003147103A
公开(公告)日：2003-05-21
申请号：JP2001348363
申请日：2001-11-14
Applicant: TORAY INDUSTRIES
Inventor： NATSUME NORIMITSU , HAYASHI MASAHIKO , TERASHITA TAKESHI , NINOMIYA HIROAKI
IPC: B64C1/00 , C08J5/24 , C08K5/21 , C08K5/3445 , C08L21/00 , C08L63/00 , C08L101/00
Abstract: PROBLEM TO BE SOLVED: To provide a honeycomb sandwich panel that causes little core crashing and enables consistent production even when various molding conditions are required and various cell honeycomb core sizes or various honeycomb shapes are used, that has excellent adhesion between a skin panel and the honeycomb core, and that has excellent surface flatness. SOLUTION: This fabric prepreg is composed of a reinforcing fabric and a resin matrix, wherein the resin covering rate is 40-100% at an arbitrarily chosen surface. A honeycomb sandwich panel is composed of a skin panel obtained from the prepreg and a honeycomb core.
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公开(公告)号：JP2000025036A
公开(公告)日：2000-01-25
申请号：JP19765398
申请日：1998-07-13
Applicant: TORAY INDUSTRIES
Inventor： TERASHITA TAKESHI , NINOMIYA HIROAKI , NAGATA HIDEO
IPC: B29B11/16 , B29K105/06 , C08J5/24 , C08K7/04 , C08L61/06 , C08L101/00
Abstract: PROBLEM TO BE SOLVED: To improve the releasability of a prepreg from a releasing paper or the like, its flexibility and its self-adhesion by a method wherein an intermediate prepreg consisting of predetermined constituent elements is produced and heat-treated at a certain fixed surface temperature and, at the same time, treated under the state that the difference between the surface temperature and a solid temperature is kept within a specified range. SOLUTION: In order to manufacture the prepreg, after an intermediate prepreg, which is obtained by impregnating a thermoplastic resin-containing water-based resol resin in reinforcing fibers, is produced, the intermediate prepreg is heat-treated at a certain fixed surface temperature and, at the same time, treated under the state that the difference between the surface temperature and a solid temperature is kept within 5 deg.C. In this case, the surface temperature represents the temperature at the outermost layer of the intermediate prepreg. Further, the solid temperature represents the temperature at the middle portion of the intermediate prepreg. In addition, the heat treating temperature is set in the range of 25-60 deg.C. The treating time of the heat treating is in the range of l2 hours - 30 days. Thus, a prepreg, the releasability existing between which and a releasing paper and/or a releasing film, a flexibility of which and the self-adhesion of which are favorable, is obtained.
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公开(公告)号：JPH11179823A
公开(公告)日：1999-07-06
申请号：JP36587597
申请日：1997-12-22
Applicant: TORAY INDUSTRIES
Inventor： KISHI HAJIME , TERASHITA TAKESHI , ENDO ITARU , SEKIDO SHUNEI
Abstract: PROBLEM TO BE SOLVED: To raise a freedom degree of a shape by improving fire resistance, water-proofness, light weight properties, strength, and durability of a large-sized structure to make moldability excellent by a method wherein a layer comprising a reinforcing fiber and an inorganic matrix material is arranged on at least one surface of a core material having a groove extending continuously on the surface. SOLUTION: A reinforcing fiber base material 23 is arranged in a facial direction of a core material 22 in contact with the core material 22 wherein a groove is provided to at least its one side, after covering the whole with a back film 29, an inside covered with the back film 29 is evacuated, and inorganic matrix liquid is injected. That is, the core material 22 consisting of a foam is arranged in a mold 21, and the reinforcing fiber base material 23 are arranged on at least both sides thereof. Each core material 22 has a large groove being a passage of the matrix liquid as a continuous groove, and many small grooves branched from the large groove. The matrix liquid is impregnated into the base material 23 in a thickness direction while being diffused in the surface direction of the reinforcing fiber base material 23.
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公开(公告)号：JPH0625446A
公开(公告)日：1994-02-01
申请号：JP6602893
申请日：1993-03-02
Applicant: TORAY INDUSTRIES
Inventor： KISHI HAJIME , ODAGIRI NOBUYUKI , TAZAKI TOKUO , NAGATA HIDEO , TERASHITA TAKESHI
Abstract: PURPOSE:To obtain a cloth prepreg improved in toughness, modulus, heat resistance, resistance to water absorption, solvent resistance and burn-through properties by impregnating a reinforcing fiber fabric with a resin composition comprising an epoxy resin, a curing agent and a specified solid rubber in two separate stages. CONSTITUTION:An epoxy resin is mixed with a curing agent, 3-12 pts.wt. solid acrylonitrile/butadiene rubber having functional groups and a lowly crosslinked structure and at most 5 pts.wt. polyether sulfone to obtain a resin composition having a complex viscosity coefficient y0.02 of 5000P or above when measured at a vibration frequency of 0.02Hz at 80 deg.C and satisfying the relationship: logy0.02-logy2>=0.5 (wherein y2 is a complex viscosity coefficient as measured at a vibration frequency of 2Hz at 80 deg.C). A reinforcing fiber fabric is impregnated with this composition in two separate stages under such conditions that the maximum linear pressure of impregnation in the first stage is 1000kg/cm or above, and the resin impregnation rate of the preliminary prepreg is 10-30%, and that the maximum linear pressure of impregnation in the second stage is 1000kg/cm or below, the interstices of the weave are filled, and the coverage factor is 97-99.99%.
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15.发明公开
公开(公告)号：EP0957129A4
公开(公告)日：2002-04-10
申请号：EP98956018
申请日：1998-12-01
Applicant: TORAY INDUSTRIES
Inventor： NINOMIYA HIROAKI , TOMIOKA NOBUYUKI , TERASHITA TAKESHI , NAGATA HIDEO , KISHI HAJIME
IPC: C08L61/06 , C09D161/06
CPC classification number: C08L61/06 , C09D161/06 , C08L2666/16
Abstract: A phenolic resin composition for fiber-reinforced composite material, comprising at least the following constituent A and thermoplastic resin B. A : phenolic resin, and B : at least one thermoplastic resin selected from among polyvinyl formal, polyvinyl acetal, polyvinyl butyral, polyvinylpyrrolidone, polyvinyl acetate, polyvinyl alcohol, polyethylene glycol, copolymer nylon, and dimer acid polyamide. A prepreg for fiber-reinforced composite material is produced by coating a film with the resin composition and impregnating the film with reinforcing fibers under heat and pressure.
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Patent Agency Ranking
公开(公告)号：EP0885704A4
公开(公告)日：1999-02-17
申请号：EP97947964
申请日：1997-12-16
Applicant: TORAY INDUSTRIES
Inventor： NAGATA HIDEO , ODAGIRI NOBUYUKI , TERASHITA TAKESHI , KISHI HAJIME , YAMANE SHOJI
CPC classification number: C08J5/24 , B29B15/105 , B29K2307/00 , C08J2363/00 , C08J2477/00 , C08J2481/06 , C08L63/00 , Y10T428/24994 , Y10T428/254 , Y10T428/30 , Y10T428/31511 , Y10T428/31551 , C08L81/00
Abstract: The present invention relates to a carbon fiber prepreg. The carbon fiber prepreg of the present invention is characterized in that a carbon fiber bundle comprising a plurality of continuous carbon filaments and having a hook drop value of 10 cm or more as the degree of fiber entanglement is impregnated with a base resin mainly composed of a thermosetting resin, and that particles of 150 mu m or less in particle size made of a thermoplastic resin account for 20 wt% or less based on the weight of the entire prepreg and distributed at a higher concentration in the surface zone than in the inside. The carbon fiber prepreg of the present invention is good in tackiness and less changing in tackiness with the lapse of time, and can form a composite with an excellent compression interlaminar shear strength (CILS) at high temperature after moisture absorption while maintaining good impact resistance. It also allows the production of a composite very higher than the conventional composite in the compressive strength (LCS) of a cross laminated panel. The carbon fiber prepreg of the present invention can be preferably used as a structural member in such areas as aerospace area, sporting area and civil engineering and architecture area.
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公开(公告)号：JP2003200510A
公开(公告)日：2003-07-15
申请号：JP2002002097
申请日：2002-01-09
Applicant: TORAY INDUSTRIES
Inventor： HAYASHI MASAHIKO , NATSUME NORIMITSU , TERASHITA TAKESHI , SAKATA HIROAKI , NINOMIYA HIROAKI
Abstract: PROBLEM TO BE SOLVED: To provide a honeycomb sandwich panel generating no core crush, having good fillet formability, excellent in the adhesiveness of a skin panel and a honeycomb core and further excellent in surface smoothness, in a method for manufacturing the honeycomb sandwich panel comprising a prepreg and the honeycomb core. SOLUTION: The manufacturing method for the honeycomb sandwich panel comprising the prepreg and the honeycomb core is characterized by performing a temperature raising process (1), and a pressure raising process (2) for setting a pressure rising speed to 980-49,000 Pa/min in this order. COPYRIGHT: (C)2003,JPO
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公开(公告)号：JP2001310957A
公开(公告)日：2001-11-06
申请号：JP2001043433
申请日：2001-02-20
Applicant: TORAY INDUSTRIES
Inventor： NATSUME NORIMITSU , ENDO ITARU , KISHI HAJIME , TERASHITA TAKESHI
Abstract: PROBLEM TO BE SOLVED: To provide an intermediate material for a fiber reinforced composite having high mechanical strength and excellent weatherability owing to a strong adhesion between the carbon fiber and the resin maintained even under a wet and hot environment, and to provide such a fiber reinforced composite. SOLUTION: This intermediate material comprises carbon fibers and a resin composition comprising a benzoxazine compound containing within the molecule a structural unit I expressed by the following structural formula (I) in which cross section of the single fiber of the carbon fibers is substantially circular (I) wherein R1 represents an aliphatic alkyl group having 1-12 carbons, a cycloalkyl group having 3-8 carbons, a phenyl group or a substituted phenyl group; and to the aromatic ring, a hydrogen atom is bound to at least one carbon at ortho- or para-position to the carbon bound with oxygen atom.
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公开(公告)号：JPH11198128A
公开(公告)日：1999-07-27
申请号：JP2020098
申请日：1998-01-16
Applicant: TORAY INDUSTRIES
Inventor： TERASHITA TAKESHI , KISHI HAJIME , ENDO ITARU , SEKIDO SHUNEI
Abstract: PROBLEM TO BE SOLVED: To obtain a fiber-reinforced inorganic material adapted to use for a building, a civil engineering or a transporter having excellent fire resistance, fire-preventiveness, light weight, durability and the like by pouring an inorganic matrix liquid in a reinforcing fiber base material and curing it. SOLUTION: In order to manufacture a fiber reinforcing inorganic material, first a mold material is coated with a mold release agent, and a reinforcing fiber base material 2 is disposed thereon. Then, a mold releasing nylon taffeta and a medium 3 are placed on the material 2. Its entirety is covered with a nylon bag film 4 (sheet-like material). Then, its interior is evacuated in vacuum by sucking with a vacuum pump 6 via a suction boat 5. And, an inorganic matrix liquid 8 is poured through a tube. In this case, a flow rate of the liquid is regulated by a valve 7. And, a glass tape is disposed as a vent passage around the material 2. And, a sealant is used to adhere the film 4 to the material 1.
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公开(公告)号：JPH08259713A
公开(公告)日：1996-10-08
申请号：JP6287295
申请日：1995-03-22
Applicant: TORAY INDUSTRIES
Inventor： OOSETO HIROKI , TERASHITA TAKESHI , ODAGIRI NOBUYUKI
IPC: B29B11/16 , B29B15/10 , B29K105/00 , B29K105/08 , B32B5/14 , C08G59/32 , C08G59/50 , C08J5/24
Abstract: PURPOSE: To obtain a prepreg giving a fiber-reinforced composite material which has excellent compression mechanical properties, in particular excellent strength in wet heat compression with a perforated plate, has excellent compression strength after impact, and is suitable for use as a structural material. CONSTITUTION: The prepreg comprises reinforcing fibers, an epoxy resin composition which gives a cured resin having a modulus of elasticity flexure of 380kgf/ mm or higher, and a particulate, fibrous, or filmy thermoplastic resin distributed around the surface of one or both sides of the prepreg. This prepreg is cured to obtain the objective composite material.
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