Toray Industries, Inc.

Naokichi Imai

Masato Honma

Kentaro Sano

Keisuke Inose

Kotaro Shinohara

Atsuki Tsuchiya

Takashi Fujioka

Koji Yamauchi

Mitsushige Hamaguchi

Shunsuke Horiuchi

Yoshiki Takebe

Takafumi Suzuki

Yuichiro Sento

Makiko Saito

Satoshi Seike

Kohei Yamashita

Tomohiro Takehara

Masaru Akita

Takayuki Fujiwara

Satomi Hiasa

Kaori Narimatsu

A fiber-reinforced plastic substrate is described in which a plurality of resins having different properties are firmly compounded and that includes components [A], [B], and [C]:

Fiber-reinforced resin substrate, integrated molded article, and method for manufacturing fiber-reinforced resin substrate

An object of the present invention is to obtain a fiber-reinforced composite material achieving both lightweight properties and mechanical properties at a high level. The present invention is a fiber-reinforced composite material including: a resin (A); and a reinforcing fiber (B), and including: a fiber-reinforced structure portion including an in-plane orientation portion having an average fiber orientation angle of the reinforcing fiber (B) of 0° or more and 45° or less and an out-of-plane orientation portion having an average fiber orientation angle of the reinforcing fiber (B) of more than 45° and 90° or less; and a cavity portion defined by the in-plane orientation portion and the out-of-plane orientation portion of the fiber-reinforced structure portion.

Fiber-reinforced composite material and sandwich structure

An object of the present invention is to obtain a fiber-reinforced composite material achieving both lightweight properties and mechanical properties at a high level. The present invention provides a fiber-reinforced composite material including a resin (A) and a reinforcing fiber (B), and having: a porous structure portion having micropores with an average pore diameter of 500 μm or less as measured by a mercury intrusion method; and a coarse cavity portion defined by the porous structure portion and having a maximum length of more than 500 μm as a cross-sectional opening portion.

Provided is a composite prepreg including a region (A) containing a thermosetting resin (a) and a reinforcing fiber and a region (B) containing a thermosetting resin (b) and a reinforcing fiber, the composite prepreg satisfying conditions (i) and (ii) or satisfying conditions (ii) and (iii):

Composite prepreg, preform using the same, fiber-reinforced composite material assembly, and method for producing the same

An object of the present invention is to provide a fiber-reinforced composite material achieving both lightweight properties and mechanical properties, a laminate thereof, and a prepreg capable of easily molding a sandwich structure thereof. The present invention is a prepreg comprising a reinforced fiber substrate (B) impregnated with a resin (A), wherein the reinforced fiber substrate (B) exists in a folded state having a plurality of folds with a fold angle of 0° or more and less than 90° in the prepreg.

Prepreg, preform, fiber-reinforced composite material, and method for producing said prepreg, said preform or said fiber-reinforced composite material

The following configuration is adopted for the purpose of solving reduction in strength and rigidity at a weldline which is a problem of an injection molding body, and enabling free design such as thin wall molding or complex shape molding of the injection molding body. That is, there is provided

Integrally molded body

In order to solve reduction in strength and rigidity at a weldline which is a problem of an injection molding body, and enable free design such as thin wall molding or complex shape molding of the injection molding body, there is provided an integrally molded body in which a substrate for reinforcement (a) having a discontinuous fiber (a1) and a resin (a2) and an injection molding body (b) having a discontinuous fiber (b1) and a resin (b2) are integrated, in which the substrate for reinforcement (a) has a difference in an orientation angle of the discontinuous fiber (a1) in each of regions obtained by dividing a major axis direction of the substrate for reinforcement (a) into 10 equal parts of within 10&#xb0;, and the substrate for reinforcement (a) covers a part or all of a weldline of the injection molding body (b) to be integrated with the injection molding body (b).

Integrally molded body and method for producing the same

A resin supply material used for press molding or vacuum-pressure molding of a fiber-reinforced resin, the resin supply material including a continuous porous material and a thermosetting resin, wherein an average pore cross-sectional area ratio P expressed by formula (I) is 1.1 or more:&#x2003;&#x2003;(I)

Resin supply material, preform, and method of producing fiber-reinforced resin

An electronic device housing includes: a bottom cover; a top cover; a partition structure that is disposed in a space divided by the bottom cover and the top cover and has an opening; and a heat generation member. The partition structure is joined to the bottom cover or the top cover to form a hollow structure, and the heat generation member is disposed on a surface of the partition structure on the hollow structure side.

Electronic device housing

A method for producing a fiber-reinforced composite material is provided. By satisfying particular conditions, this method is capable of suppressing the problem of poor appearance caused by the release film in the production of the fiber-reinforced composite material having a three-dimensional shape by heat-press molding to enable production of the fiber-reinforced composite material having a high quality appearance in high cycle. A method for manufacturing a fiber-reinforced composite material wherein a fiber-reinforced substrate containing a reinforcing fiber (A) and a thermosetting resin (B) is sandwiched between release films (C) to constitute a layered material, and the layered material is pressed in a mold heated to molding temperature to thereby cure the thermosetting resin (B), wherein

Method for manufacturing fiber-reinforced composite material

A molded article includes 10 to 40% by mass of reinforcing fibers (A); and 60 to 90% by mass of a matrix resin (B) mainly including a polyarylene sulfide, the molded article satisfying conditions (I) to (IV) and having a tensile strength of 240 MPa or more in a main orientation direction of the reinforcing fibers (A) in the molded article:

Molded article and molding material

A fiber-reinforced resin composition includes a polyarylene sulfide (A), a carbodiimide compound (B) and carbon fibers (C) in specific blending amounts and in which the carbon fibers (C) are surface-treated with a sizing agent (D), the carbodiimide compound (B) is an aliphatic carbodiimide compound, and the sizing agent (D) is a compound having three or more specific functional groups in one molecule; and a fiber-reinforced composite material includes a thermoplastic resin (A'), an adhesive compound (B&#x2032;) and reinforcing fibers (C&#x2032;) and in which the adhesive compound (B&#x2032;) is a compound having two or more specific structures in one molecule, the thermoplastic resin (A&#x2032;) is a thermoplastic resin containing an element other than carbon in a repeating unit structure of a main chain, and an abundance ratio Rb of the adhesive compound (B&#x2032;) is 1.2 or more.

Fiber-reinforced resin composition, and fiber-reinforced composite material

A molding material includes 5 to 50 parts by mass of reinforcing fibers (A) with a sizing agent (s) deposited thereon, 1 to 20 parts by mass of a component (B) containing a polycarbodiimide compound (B-1) that is liquid at 50&#xb0; C., and 30 to 94 parts by mass of a thermoplastic resin (C) containing an element other than carbon in the repeating unit structure of the main chain, based on 100 parts by mass of the total of the components (A) to (C), wherein the molding material is a composite in which a composite fiber bundle (D) with the component (A) impregnated with the component (B) is covered with the component (C).

Molding material, method of producing same, and master batch used in same

Provided is a molding material comprising a composite of 1 to 50 wt % of a continuous reinforcing fiber bundle (A) and 0.1 to 20 wt % of a poly (phenylene ether ether ketone) oligomer (B); and 30 to 98.9 wt % of a thermoplastic resin (C) adhering to the composite, wherein the component (B) has a melting point of not higher than 270&#xb0; C. Also provided are a method for molding the molding material, a method for producing the molding material, and a method for producing a fiber-reinforced composite material. A molded article having high heat resistance and dynamic properties can be easily produced without impairing the economic efficiency and productivity during the process for producing a molding material. In addition, a fiber-reinforced composite material can be produced with more ease and high productivity.

Molding material, molding method using same, method for producing molding material, and method for producing fiber-reinforced composite material

A carbon fiber-reinforced polyarylene sulfide has both dynamic characteristics and molding cycle characteristics and can be produced with high productivity by preparing a polycarbodiimide-modified polyarylene sulfide using a polyarylene sulfide and a polycarbodiimide as raw materials, then melting the resulting polycarbodiimide-modified polyarylene sulfide, and combining the polycarbodiimide-modified polyarylene sulfide with carbon fibers at a specific ratio to produce a composite.

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Ehime, Japan

Naokichi Imai