Devices for radiative cooling and optical waveguiding are provided, wherein the devices comprise a fabric including one or more fibers extending for a length in a longitudinal direction and a plurality of void structures positioned within each of the one or more fibers and extended over the length of each of the one or more fibers. Each of the plurality of void structures is configured to scatter at least a portion of an electromagnetic radiation received thereon to thereby radiatively cool the object.

A cooling material is provided. The cooling material can include a yarn having a defined denier of less than or equal to approximately 90 denier, wherein the yarn can comprise a cooling additive disposed on or in a polymer. In some embodiments, the yarn can be at least one of a warp or a weft of a woven fabric. A method can comprise receiving a cooling material, wherein the cooling material comprises: a polymer and a cooling additive, wherein the cooling additive is disposed on or in the polymer; and processing the cooling material by employing a non-weaving technique to create a non-woven fabric. In some embodiments, the non-weaving technique is one of a meltblown process, a spunbond process, or a multi-denier process.

Included are compositions for fibers which include a clay nanoparticle and a wax. The composition provides the fibers with oil and water repellency.

Included are compositions for fibers which include a clay nanoparticle and a wax. The composition provides the fibers with oil and water repellency.

A surface-modified fibrous material is provided for incorporation in a thermoplastic matrix to form a fiber-reinforced composite article. Good binding between the fibrous material and the thermoplastic matrix is achieved through the presence of finely roughened surfaces on the fibers of nanoparticles of an inorganic material. Such nanoparticles are provided from an alkaline aqueous size composition containing the nanoparticles dispersed therein (as described). The fibrous material may be provided in continuous or discontinuous form. In a preferred embodiment glass fibers are initially provided in continuous form followed by cutting into discontinuous lengths and drying with the retention of the nanoparticles on the surfaces of the fibers. The surface-roughened fibrous material is incorporated in a thermoplastic matrix as fibrous reinforcement with the application of heat whereby the thermoplastic matrix is rendered melt processable. In preferred embodiments injection or compression molding is utilized. Improved long-fiber thermoplastics also may be formed to advantage.

Systems and methods are disclosed for a multi-layered sound absorption structure. The multi-layered sound absorption structure may include a form material, an acoustic material disposed on a surface of the form material, and a construction material disposed on the acoustic material. The acoustic material may couple to the construction material during curing of the construction material. After the construction material is cured, the form material may be removed exposing a least a portion of the acoustic material.

Systems and methods are disclosed for a multi-layered sound absorption structure. The multi-layered sound absorption structure may include a form material, an acoustic material disposed on a surface of the form material, and a construction material disposed on the acoustic material. The acoustic material may couple to the construction material during curing of the construction material. After the construction material is cured, the form material may be removed exposing a least a portion of the acoustic material.

The present disclosure relates to: a woven fabric which is constituted from a bare yarn (A yarn) of an elastic polyurethane yarn, and a non-elastic yarn or a composite yarn (B yarn) of a non-elastic yarn and an elastic polyurethane yarn, and which is characterized in that at an intersecting portion of a warp and a weft, a specific region is present where the warp and the weft are both the A yarn, the warp and the weft are bonded or melt bonded to each other in this specific region, and the ratio of the number of intersections between A yarns of warp and weft in the specific region relative to the total number of intersections between warp and weft in the entire structure of the woven fabric is 0.02-50%; a method for producing same; and a fiber product containing the woven fabric.

The present invention relates to a porous support, a method for manufacturing the same, and a reinforced membrane comprising the same, the porous support comprising a nanoweb in which nanofibers are accumulated in the form of a nonwoven fabric including a plurality of pores, wherein the nanoweb has a moisture saturation time of 1 second to 600 seconds. The porous support not only has excellent durability, heat resistance, and chemical resistance while exhibiting excellent air permeability and water permeability, but also has good hydrophilicity.

A method for producing hydrogelling fibers or fiber structures, involving tempering fibers or fiber structures composed of a first fiber raw material comprising water-soluble polyvinyl alcohol and/or water-soluble polyvinyl alcohol copolymer for a predetermined tempering duration at a predetermined tempering temperature that is greater than a glass transition temperature and/or less than a melting temperature of the first fiber raw material used, such that the fibers are cross-linked, wherein the fibers or fiber structures are provided with an acid catalyst before the tempering.