The present invention aims to provide an inorganic reinforced polyamide resin composition that achieves incompatible mechanical properties, i.e., high stiffness and impact resistance (high toughness), has excellent flowability, and further has excellent long-term wear resistance (high sliding performance) to an inorganic fiber reinforcing material used as a sliding counterpart material.

An inorganic reinforced polyamide resin composition containing: 10 to 55 mass% of a crystalline polyamide resin (A); 1 to 20 mass% of an amorphous polyamide resin (B); 40 to 70 mass% of an inorganic reinforcing material (C); and 0.5 to 10 mass% of a modified polyolefin resin (D) having a reactive functional group that is capable of reacting with a terminal group and/or a main-chain amide group of a polyamide resin, characterized in that a blending mass ratio between the components (A) and (D) satisfies 0.01 ≤ (D)/(A) ≤ 0.2, and a blending mass ratio between the components (A) and (B) satisfies 0.05 ≤ (B)/(A) ≤ 0.7.

Exemplary embodiments provide systems, devices and methods for the fabrication of three-dimensional polymeric fibers having micron, submicron and nanometer dimensions, as well as methods of use of the polymeric fibers.

An optical film has a base material and a hardcoat layer, in which a pencil hardness is 2H or higher, the number of times of folding endurance measured by an MIT tester is 1000 or more, an incident ray is made incident on the optical film from −60° with respect to a normal direction of the optical film, an angle width within which 10% of outgoing ray peak intensity is obtained is 6° or less, and an intensity of outgoing ray at 50° from the normal direction is 1% or less of the outgoing ray peak intensity. A method for manufacturing an optical film has a step of applying a hardcoat layer forming composition to a base material to provide a coating film, and a step of curing the coating film while bringing the coating film into contact with one smooth metal roll.

The present invention relates to a polyamide resin in which an average particle size of individual crystals measured by a small-angle X-ray scattering apparatus is 8.0 nm or less, and a polymer film and resin laminate using the same.

Films including solvent barriers and primer layers are described. In particular, films including a substrate, the substrate including polylactic acid, a primer layer disposed on the substrate, a barrier layer disposed on the surface of the primer layer opposite the substrate, and an adhesive layer disposed on a surface of the barrier layer opposite the primer layer. The barrier layer includes an amorphous aliphatic polyamide with a glass transition temperature of at least 40 #C. Such films can provide acceptable adhesion and barrier performance to polylactic acid based graphics film systems.

A graphene-reinforced polymer matrix composite comprising an essentially uniform distribution in a thermoplastic polymer of about 10% to about 50% of total composite weight of particles selected from graphite microparticles, single-layer graphene nanoparticles, multi-layer graphene nanoparticles, and combinations thereof, where at least 50 wt % of the particles consist of single- and/or multi-layer graphene nanoparticles less than 50 nanometers thick along a c-axis direction. The graphene-reinforced polymer matrix is prepared by a method comprising (a) distributing graphite microparticles into a molten thermoplastic polymer phase comprising one or more matrix polymers; and (b) applying a succession of shear strain events to the molten polymer phase so that the matrix polymers exfoliate the graphite successively with each event until at least 50% of the graphite is exfoliated to form a distribution in the molten polymer phase of single- and multi-layer graphene nanoparticles less than 50 nanometers thick along a c-axis direction.

Exemplary embodiments provide systems, devices and methods for the fabrication of three-dimensional polymeric fibers having micron, submicron and nanometer dimensions, as well as methods of use of the polymeric fibers.

Fiber-reinforced composite materials include a matrix of a thermoplastic polyamide resin, at least 3 weight% of at least one impact modifier, and 7-60 wt% fiber reinforcing agent of discontinuous meta-aramid fibers. The composite material is melt processable, and is impact resistant as measured by an unnotched Izod test method according to ASTM D4812 having a value of at least 12 ft-lbs/in (640 J/m). The composite materials can be used to prepare articles such as safety articles.

Provided are a polyamide having a structural unit represented by General Formula [1], and the like. In General Formula [1], R.sup.1 is a divalent organic group represented by General Formula [2], and R.sup.2 is a divalent organic group. In General Formula [2], n.sub.1 and n.sub.2 are each independently an integer of 0 to 4, and in a case where a plurality of R.sup.3's are present, the plurality of R.sup.3's each independently represent a monovalent substituent.

Provided is a semiaromatic polyamide film having an average linear expansion coefficient in the width direction, measured under conditions of 20 to 125° C., of -90 to 0 ppm/°C.