A polyphenylene ether resin composition includes a modified polyphenylene ether copolymer, a high-molecular-weight compound, and a crosslinking agent for the modified polyphenylene ether copolymer. The modified polyphenylene ether copolymer includes a substituent having a carbon-carbon unsaturated double bond at a molecular chain end of the modified polyphenylene ether copolymer. The high-molecular-weight compound has a glass transition temperature (Tg) measured by differential scanning calorimetry of 20° C. or lower and has a number-average molecular weight Mn ranging from 1000 to 10000, inclusive. The crosslinking agent includes at least two carbon-carbon unsaturated double bonds per molecule, and includes at least one of dicyclopentadiene acrylate and dicyclopentadiene methacrylate. In a cured state of the polyphenylene ether resin composition, the modified polyphenylene ether copolymer is phase separated from the high-molecular-weight compound.

A multicomponent structure includes a substrate having a plurality of fiber-like reinforcement materials embedded in a matrix material. The reinforcement materials have a rectangular cross-section defined in part by the matrix material and extend a length of the multicomponent structure. In one embodiment, the multicomponent structure includes at least one recyclate.

The invention relates to a multilayer composite comprising a layer of leather in contact with at least one monolayer comprising parallel aligned fibers and a matrix material. The composite may further comprise film layer(s) that may be breathable and/or waterproof. The multilayer composite material is suitable for use in clothing and outdoor gear and apparel.

Multilayer composite materials combining a low tenacity nylon fabric with a fabric formed from high tenacity fibers. The fabrics are bonded with a compatibilizing adhesive system that achieves a peel strength of at least 1.5 lbs/inch. The nylon is colored with a camouflage pattern and the high strength fabric is colored with a color that does not stand out relative to the camouflage pattern. The composite materials are used for forming vest covers and plate carrier materials, particularly webless plate carrier materials having slots for hanging modular accessories.

A composite structure includes a structure that contains first reinforced fibers and first resin and a laminate that is disposed on at least one surface of the structure and has a plurality of layers containing second reinforced fibers and second resin, with the structure and the laminate integrated, the first reinforced fibers being discontinuous fibers and having a thickness-wise average fiber orientation angle in a range of 5 to 60°, the second reinforced fibers being discontinuous fibers and having a thickness-wise average fiber orientation angle in a range of 0 to 5°, the structure having a density in a range of 0.01 to 1 g/cm.sup.3, the laminate having a variation in volume content of the second reinforced fibers in a range of 0 to 10%, and the composite structure having a protruding portion on a laminate's surface opposite from a laminate's surface in contact with the structure.

A sound wave absorbing laminate composite material structure for an aircraft including stacked plies of a hybrid composite material, wherein each of the hybrid composite material plies includes first polymer material tows parallel to a warp direction, second polymer material tows parallel to a weft direction, and sound absorbent material tows parallel to the warp direction, wherein the first and second polymer material tows carbon or glass fiber reinforcing polymer.

A ceramic composite for an armor system includes a ceramic core, a first reinforcement layer, and a second reinforcement layer. The first reinforcement layer includes a first plurality of reinforcing members, and the first plurality of reinforcing members are arranged within the first reinforcement layer in a first reinforcement orientation. The second reinforcement layer includes a second plurality of reinforcing members, and the second plurality of reinforcing members are arranged within the second reinforcement layer in a second reinforcement orientation. The first reinforcement layer and the second reinforcement layer are attached to the ceramic core such that first reinforcement orientation and the second reinforcement orientation do not align.

A composite structure includes a structure that contains first reinforced fibers and first resin and a laminate that is disposed on at least one surface of the structure and has a plurality of layers containing second reinforced fibers and second resin, with the structure and the laminate integrated, the first reinforced fibers being discontinuous fibers and having a thickness-wise average fiber orientation angle in a range of 5 to 60, the second reinforced fibers being discontinuous fibers and having a thickness-wise average fiber orientation angle in a range of 0 to 5, the structure having a density in a range of 0.01 to 1 g/cm.sup.3, the laminate having a variation in volume content of the second reinforced fibers in a range of 0 to 10%, and the composite structure having a protruding portion on a laminate's surface opposite from a laminate's surface in contact with the structure.

A polyphenylene ether resin composition includes a modified polyphenylene ether copolymer, a high-molecular-weight compound, and a crosslinking agent for the modified polyphenylene ether copolymer. The modified polyphenylene ether copolymer includes a substituent having a carbon-carbon unsaturated double bond at a molecular chain end of the modified polyphenylene ether copolymer. The high-molecular-weight compound has a glass transition temperature (Tg) measured by differential scanning calorimetry of 20 C. or lower and has a number-average molecular weight Mn ranging from 1000 to 10000, inclusive. The crosslinking agent includes at least two carbon-carbon unsaturated double bonds per molecule, and includes at least one of dicyclopentadiene acrylate and dicyclopentadiene methacrylate. In a cured state of the polyphenylene ether resin composition, the modified polyphenylene ether copolymer is phase separated from the high-molecular-weight compound.

A battery separator includes a polyolefin microporous membrane having a width of 100 mm or more, and a porous layer laminated on at least one surface of the polyolefin microporous membrane. The polyolefin microporous membrane has a variation range of an F25 value in a width direction of 1 MPa or less, and the F25 value indicates a value obtained by dividing a load value measured at 25% elongation of a specimen with use of a tensile tester by a cross-sectional area of the specimen. The porous layer contains a fluorine-based resin and an inorganic particle.