Disclosed herein is a polyamide composition (PC) including at least one polyamide (A) and at least one carbon black (B), where the surface layer of the at least one carbon black (B) includes not more than 2% by weight of oxygen, based on the total weight of the surface layer of the at least one carbon black (B), and where the weight of oxygen in the surface layer is measured by X-ray photoelectron spectroscopy at an X-ray penetration depth of 2 to 10 nm. Further disclosed herein are a process for producing the polyamide composition (PC), a process for producing a moulded article by forming the polyamide composition (PC), a moulded article including the polyamide composition (PC), and a method of using the at least one carbon black (B) in a polyamide composition (PC) for increasing the shrinkage of moulded articles made from the polyamide composition (PC).

A continuous fiber reinforced resin composite material of the present disclosure is a continuous fiber reinforced resin composite material containing continuous reinforcing fibers and a thermoplastic resin, wherein a peak temperature of tan δ at an interface between the continuous reinforcing fibers and the thermoplastic resin in the continuous fiber reinforced resin composite material is 80° C. or higher.

Provided is a resin molded body production method that enables production of a resin molded body in which mechanical strength is good, anisotropy of physical properties is low, and little warpage is developed. This production method is for a resin molded body containing a thermoplastic resin (A) and a cellulose nanofiber (B), the production method including: a step for preparing a main supply material (a1) containing the thermoplastic resin (A) and the cellulose nanofiber (B) and an auxiliary supply material (a2) that is a product of melting treatment of the main supply material (a1); a resin composition formation step for obtaining a resin composition (b) by melting and mixing of the main supply material (a1) and the auxiliary supply material (a2); and a step for obtaining the resin molded body by molding the resin composition (b).

There is provided a multilayer structure comprising at least a barrier resin layer (X) and an inorganic barrier layer (Y) with a thickness of 500 nm or less which is adjacent to the barrier resin layer (X), wherein the layer (X) is made of a resin composition (x) comprising an ethylene-vinyl alcohol copolymer (A) and a polyamide (B) in a mass ratio (A/B) of 55/45 to 98/2, and the ethylene-vinyl alcohol copolymer (A) has an ethylene content of 20 to 46 mol % and a saponification degree of 90 mol % or more. Thus, there can be provided a multilayer structure having excellent gas barrier properties and appearance even after being subjected to stretching process or retorting process followed by bending process, and a packaging material for retort therewith.

Pre-impregnated composite material (prepreg) that can be cured/molded to form aerospace composite parts. The prepreg includes carbon reinforcing fibers and an uncured resin matrix. The resin matrix includes an epoxy component that is a combination of a hydrocarbon epoxy novolac resin and a trifunctional epoxy resin and optionally a tetrafunctional epoxy resin. The resin matrix includes polyethersulfone as a toughening agent and a thermoplastic particle component.

A thermoplastic composite material composition has improved electromagnetic radiation shielding performance. The thermoplastic composite material composition is a resin composition including a thermoplastic resin composition, high-density polyethylene, metal/ceramic powder, etc. The disclosed composition provides improved electromagnetic shielding performance, improved impact resistance, and good appearance.

Provided is a thermoplastic resin composition which contains three components, i.e., a polyethylene, a polyamide and a compatibilizer and is excellent in impact resistance while realizing a reduction in environmental load, and a modifier capable of imparting impact resistance to a polyethylene. The composition and the modifier each contain a polyethylene, a polyamide and a compatibilizer. The compatibilizer is a modified elastomer having a reactive group that reacts with the polyamide, and the polyethylene and the polyamide have a bio-based carbon content rate of 80% or more according to ISO 16620-2.

The present invention provides ethylene-vinyl alcohol copolymer composition pellet reduced in coloration. The ethylene-vinyl alcohol copolymer composition pellet of the invention include an ethylene-vinyl alcohol copolymer (A), a polyamide resin (B), and an alkaline earth metal salt (C) and have a yellowness index (YI) value of 10 or less when examined with a spectral color-difference meter by a transmission method.

The present invention relates to a polymer film comprising a base film comprising polyamide-based resin; and two or more kinds of copolymers comprising polyamide-based segments and polyether-based segments, and a method for preparing the polymer film.

Provided is an epoxy resin composition with improved heat resistance and resin elongation. Further provided is a fiber-reinforced composite material which uses the epoxy resin composition and thereby excels in compression strength in high-temperature environments and interlaminar toughness. The epoxy resin composition comprises the constituents [A], [B] and [C], 8-40 mass % of [B] is contained in the epoxy resin composition. The number of moles of active hydrogen contained in [C] is 1.05-2.0 times the number of moles of epoxy groups contained in the entire epoxy resin composition, in a cured resin formed by curing the epoxy resin composition and having a degree of curing of at least 90% obtained by DSC (differential scanning catorimetry), [A], [B] and [C] form a monolayer structure, or a phase separation structure of less than 500 nm. The rubber state modulus of elasticity Y (MPa) and glass transition temperature X (° C.) obtained by DMA (dynamic mechanical analysis) of the cured resin satisfy formula (1). [A] amine type epoxy resin [B] thermoplastic resin [C] aromatic amine

0.19X/° C.-31.5≦Y/MPa≦0.19X/° C.-27   (1)