A shock absorption structure has an exterior member made of a first fiber-reinforced composite material, an interior member made of a second fiber-reinforced composite material, and a first intermediate member made of resin, extending along the exterior member and the interior member, and sandwiched between the exterior member and the interior member. The first intermediate member has a lower elongation percentage than the exterior member. The first intermediate member has lower strength than the exterior member.

The application relates to a nonwoven composite containing a lofty nonwoven layer and a film. The lofty nonwoven layer contains a plurality of primary fibers and defines a plurality of peak regions and a plurality of valley regions. The film contains a thermoplastic polymer and has a peak film thickness in the peak regions of the layer. The film is present on at least a majority of the second surface of the nonwoven layer. Within the valley regions, the film encapsulates a plurality of fibers from the nonwoven layer. The cross-sectional area fraction of total fibers in the film within the valley regions is at least about 8% and the cross-sectional area fraction of total fibers in the film within the peak regions is less than about 5%.

The present disclosure provides a panel, comprising a first outer skin consisting of a metal facing, at least two thermal insulation layers, with at least one of which consisting of a rigid polyurethane or polyisocyanurate foam, and at least one reinforcement layer spaced apart from the two outer skins and between two thermal insulation layers. It further provides a process for preparing the panel.

A composite material is described. The composite material comprises a first cover sheet, a second cover sheet, and a core layer arranged between the first cover sheet and the second cover sheet, said core layer comprising a first adhesive layer in contact with the first cover sheet, a second adhesive layer in contact with the second cover sheet, and fibres which extend from the first adhesive layer to the second adhesive layer. The first cover sheet has a larger extension than the core layer and comprises at least a first edge region which is free from the core layer, wherein the first edge region extends from the outer edge of the first cover sheet to the core layer.

A panel (1) has a layered structure including: a first outer layer (2), an intermediate layer (3), and a second outer layer (4). The second outer layer (4) has a buckling stress lower than a buckling stress of the first outer layer (2), and the first outer layer (2) and the second outer layer (4) each have a compression failure stress higher than the buckling stress of the second outer layer (4).

A fiber reinforced powder paint provides improved flexural fatigue resistance for composites substrates. Fiber loading in the powder is greater than 40%. Aramid fiber loading in an epoxy based powder paint is exemplified. A composite bow limb coated with the powder paint survives a remarkably greater number of bending cycles before failure when coated with the powder paint.

An integrally molded body includes a separate structure (C) joined to at least a part of an end section of a sandwich structure constituted of a core layer composed of discontinuous fibers and a thermoplastic resin (A) and a skin layer composed of continuous fibers and a resin (B), wherein: the sandwich structure has a stepped section at least at a part of the end section; the stepped section is constituted of a main body section forming a high surface in the stepped section, an interface section forming an interface connecting the high surface and a low surface of the stepped section, and a thinnest section having a core layer having a porosity lower than a porosity of a core layer in the main body section; and the separate structure (C) does not contact the interface, and is joined to only at least a part of the thinnest section.

A curable composite material having high z-direction electrical conductivity. The curable composite material includes two or more layers of reinforcement carbon fibers that have been infused or impregnated with a curable matrix resin and an interlaminar region containing at least conductive nano-sized particles, e.g. carbon nanotubes, and a light-weight carbon veil. According to another embodiment, the interlaminar region further contains polymeric toughening particles. Methods for fabricating composite materials and structures are also disclosed.

Textile hose for encasing elongated objects, characterised by having a radially elastic outer layer made from wear-resistant material and at least one inner layer made from thermally insulating material.

An article of apparel including insulation material is discussed. The insulation material includes an insulating layer formed of waterfowl fibers and synthetic fibers. The waterfowl fibers are present in an amount of at least 20% by weight of the insulating layer. The insulating layer is generally free of waterfowl plumage.