Provided is a curable composition that is soluble in various solvents (organic solvents other than highly toxic organic solvents, for example, cyclohexanone) while maintaining excellent low dielectric properties, wherein a film obtained by curing the curable composition has excellent mechanical properties. A curable composition, comprising: a polyphenylene ether having a functional group including an unsaturated carbon bond, which is obtained from raw material phenols including phenols satisfying at least condition 1 (having a hydrogen atom at an ortho position and a para position), and having a slope calculated by a conformation plot of less than 0.6; and at least one of a compound containing at least one maleimide group in one molecule, a triazine-based compound containing at least one thiol group, and crosslinked polystyrene particles.

A piston for a heavy duty diesel engine including a composite layer forming at least a portion of a combustion surface is provided. The composite layer has a thickness greater than 500 microns and includes a mixture of components typically used to form brake pads, such as a thermoset resin, an insulating component, strengthening fibers, and an impact toughening additive. According to one example, the thermoset resin is a phenolic resin, the insulating component is a ceramic, the strengthening fibers are graphite, and the impact toughening additive is an aramid pulp of fibrillated chopped synthetic fibers. The composite layer also has a thermal conductivity of 0.8 to 5 W/m.Math.K. The body portion of the piston can include an undercut scroll thread to improve mechanical locking of the composite layer. The piston can also include a ceramic insert between the body portion and the composite layer.

A piston for a heavy duty diesel engine including a composite layer forming at least a portion of a combustion surface is provided. The composite layer has a thickness greater than 500 microns and includes a mixture of components typically used to form brake pads, such as a thermoset resin, an insulating component, strengthening fibers, and an impact toughening additive. According to one example, the thermoset resin is a phenolic resin, the insulating component is a ceramic, the strengthening fibers are graphite, and the impact toughening additive is an aramid pulp of fibrillated chopped synthetic fibers. The composite layer also has a thermal conductivity of 0.8 to 5 W/m.Math.K. The body portion of the piston can include an undercut scroll thread to improve mechanical locking of the composite layer. The piston can also include a ceramic insert between the body portion and the composite layer.

An article of footwear including a sole system, including an upper and the sole system. The sole system includes a knitted component incorporating a one-piece knit outsole. The knit outsole has a ground-facing side, a top side, an inlaid tensile element, and a ground-engaging cleat member protruding from the ground-facing side of the knit outsole. The tensile element may be adjacent a cleat member. The upper is connected at its bottom to the top side of the knit outsole.

An article of footwear including a sole system, including an upper and the sole system. The sole system includes a knitted component incorporating a one-piece knit outsole. The knit outsole has a ground-facing side, a top side, an inlaid tensile element, and a ground-engaging cleat member protruding from the ground-facing side of the knit outsole. The tensile element may be adjacent a cleat member. The upper is connected at its bottom to the top side of the knit outsole.

A porous metamaterial is disclosed, comprising a matrix (101) having a plurality of voids (103) therein, wherein a content of interest (104) is trapped within each of at least part of the voids (103), detached from the matrix (101), thereby providing a respective unit-cell (100) of the metamaterial, with an intended predetermined property associated with the presence of the content of interest (104) within the at least one void (103). A variety of applications of the disclosed metamaterials are presented, including armors having either non-Newtonian fluids or magnetic particles confined within the voids as a content of interest. Upon subjecting the magnetic particles to a rotating magnetic field, the magnetic particles spin within the voids and gain angular momentum, thereby improving the resistance of the armor against penetration. Systems and methods for manufacturing porous metamaterial units having contents of interest confined within voids therein, are also disclosed.

The present disclosure describes techniques for fabricating a textile article from a laminate formed by curing a reinforced fiber matrix and a resin substrate. The resin substrate may include iron oxide particles, such as iron oxide, Fe.sub.3O.sub.4, that are capable of absorbing and attenuating RF signals within a desired RF signal range, namely 0 GHz-3 GHz, 3 GHz, −8 GHz, and greater than or equal to 10 GHz. The iron oxide particles may include Fe.sub.3O.sub.4Fe, Fe.sub.3O.sub.4Ni, or Fe.sub.3O.sub.4, and/or so forth. Each iron oxide particle is selected based on the RF signal range that the textile article is intended to absorb. In other words, a change in iron oxide particle composition and proportion by volume may impact the RF signals absorbed and attenuated by the textile article.

A method of fabricating a composite material, the method comprises the steps of a) providing a first layer of a fibre reinforced polymer, preferably a thermoset FRP, b) providing an array of thermoplastic islands across at least a proportion of a major surface of the first layer, c) providing a second layer of a fibre reinforced polymer, preferably a thermoset FRP, d) laying the second layer over at least some of the islands, and e) securing the first and second layers together. There is also disclosed a composite which comprises a first layer of a fibre reinforced polymer and a second layer of a fibre reinforced polymer, between which is an intervening layer comprising an array of thermoplastic islands.

A method of fabricating a composite material, the method comprises the steps of a) providing a first layer of a fibre reinforced polymer, preferably a thermoset FRP, b) providing an array of thermoplastic islands across at least a proportion of a major surface of the first layer, c) providing a second layer of a fibre reinforced polymer, preferably a thermoset FRP, d) laying the second layer over at least some of the islands, and e) securing the first and second layers together. There is also disclosed a composite which comprises a first layer of a fibre reinforced polymer and a second layer of a fibre reinforced polymer, between which is an intervening layer comprising an array of thermoplastic islands.

A composite which comprises a first layer of a fibre reinforced polymer and a second layer of a fibre reinforced polymer, between which is an intervening layer comprising an array of thermoplastic islands.