Abstract:
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 providedan 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,the substrate for reinforcement (a) covering a part or all of a weldline of the injection molding body (b) to be integrated with the injection molding body (b),the ratio of thickness Ta of the substrate for reinforcement (a) to thickness T of a weldline part of the integrally molded body satisfying relational expression:in a case of Ea ≠ Ebw,Ta/T≤Ebw−√Ea⋅Ebw/Ebw−Eain a case of Ea = Ebw,Ta/T≤0.5wherein, Ta: Thickness of substrate for reinforcement (a),T: Thickness of weldline part of integrally molded body,Ea: Flexural modulus of substrate for reinforcement (a) in width direction of weldline, andEbw: Flexural modulus of weldline of injection molding body (b) in width direction of weldline.
Abstract:
The invention provides a fiber reinforced resin composition comprising a melt-kneaded product (A) prepared by melt-kneading a first resin (A1) and a second resin (A2) that has a reactive functional group as well as a third resin (B) and a fibrous filler (C), wherein, with respect to the contents of the components, the first resin (A1), the second resin with a reactive functional group (A2), and the third resin (B) account for 0.1 to 75 wt%, 0.1 to 15 wt%, and 10 to 99.8 wt%, respectively, to form a resin composition while said fibrous filler (C) accounts for 0.1 to 300 parts by weight per 100 parts by weight of said resin composition, said first resin (A1) and said third resin (B) forming a matrix resin, said second resin (A2) being dispersed as particles in said matrix resin, and said particles having a number average particle diameter of 10 to 1,000 nm. The invention relates to a fiber reinforced resin composition having rigidity and impact resistance in a good balance, a molding material, and a production method thereof.
Abstract:
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°, 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).
Abstract:
Un material de moldeo que comprende: un material compuesto del 1 al 50 % en peso de un haz de fibras de refuerzo continuo (A) y del 0,1 al 20 % en peso de un oligómero de poli (fenileno éter éter cetona) (B); y del 30 al 98,9 % en peso de una resina termoplástica (C) que se adhiere al material compuesto, en el que el componente (B) tiene un punto de fusión no superior a 270 °C.
Abstract:
Un material de moldeo que comprende: un material compuesto que comprende del 1 al 50 % en peso de (A) un haz de fibras de refuerzo continuas y del 0,1 al 40 % en peso de (B) un prepolímero de poli(sulfuro de arileno) o (B') un poli(sulfuro de arileno); y del 10 al 98,9 % en peso de (C) una resina termoplástica adherida a dicho material compuesto; en el que dicho material compuesto comprende además (D) un compuesto de metal de transición de valencia cero o (E) un compuesto de hierro de valencia baja en una cantidad del 0,001 al 20 % en moles basado en la cantidad de átomos de azufre contenida en dichos componentes (B) o (B').
Abstract:
Disclosed are: A molding material comprising: a composite comprising 1 to 50 wt% of (A) a bundle of continuous reinforcing fibers and 0.1 to 40 wt% of (B) a polyarylene sulfide prepolymer or (B') a polyarylene sulfide; and 10 to 98.9 wt% of (C) a thermoplastic resin adhered to the composite; wherein the composite further comprises (D) a zero-valent transition metal compound or (E) a low-valent iron compound in an amount of 0.001 to 20 mol% based on the amount of sulfur atoms contained in the component (B) or (B'); a prepreg; and a method of producing a fiber-reinforced molding base material. By using the molding material according to the present invention which exhibits excellent economical efficiency and productivity, a molded article having excellent mechanical characteristics can be easily produced.
Abstract:
A carbon fiber-reinforced polyarylene sulfide having both dynamic characteristics and molding cycle characteristics 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.
Abstract:
Provided are a fiber-reinforced resin composition which 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 which includes a thermoplastic resin (A'), an adhesive compound (B') and reinforcing fibers (C') and in which the adhesive compound (B') is a compound having two or more specific structures in one molecule, the thermoplastic resin (A') 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') is 1.2 or more.