Abstract:
The present invention is: a molding material comprising, 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°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); a production method for obtaining the molding material; and a master batch suitably used in the production method.
Abstract:
Provided are a molded article including: 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 the following 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; and a molding material for producing the molded article. (I) The strand tensile strength of the reinforcing fibers (A) is 1.5 to 5.5 GPa. (II) The number average fiber length of the reinforcing fibers (A) is 0.4 to 10 mm. (III) The tensile elongation of the matrix resin (B) is 1.5 to 10%. (IV) The interfacial shear strength between the reinforcing fibers (A) and the matrix resin (B) is 20 MPa or more.
Abstract:
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°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.