There is provided a fiber that includes a fiber material disposed along a longitudinal-axis fiber length. A porous domain has a porous domain length along at least a portion of the fiber length, within the fiber material. The porous domain includes solid-phase material regions and fluid-phase interstitial regions that are both along the porous domain length and across the porous domain, for multi-dimensional porosity of the porous domain.

A flame retardant resin composition containing from 30 to 300 parts by mass of a boehmite and an aluminum hydroxide as a total with respect to 100 parts by mass of the resin, wherein a content ratio of the boehmite and the aluminum hydroxide [content of boehmite:content of aluminum hydroxide] is from 85:15 to 15:85; a formed part; and a wiring material each using the same.

An insulated electrical cable includes: a conductor; and an insulating layer that is laminated on an outer peripheral surface of the conductor and includes a polyimide as a main component, wherein the insulating layer includes a plurality of pores, and wherein a porosity of the insulating layer is greater than or equal to 25% by volume and less than or equal to 60% by volume.

Disclosed is a polymer-ceramic composite, comprising: ceramic particles within a polymer matrix; wherein greater than or equal to about 70% of the ceramic particles by volume experience ceramic particle to ceramic particle contact; wherein a dielectric strength of the composite is greater than or equal to about 300 kilovolts per millimeter; and wherein a thermal conductivity of the composite is greater than or equal to about 10 watts per meter kelvin.

Magnet wire with corona resistant enamel insulation may include a conductor, and at least one layer of polymeric enamel insulation may be formed around the conductor. The polymeric enamel insulation may include a filler dispersed in a base polyimide material. The filler may include between 20 percent and 80 percent by weight of silica oxide and between 20 and 80 percent by weight of titanium oxide. Additionally, the polymeric enamel insulation may have a thermal index of at least 260 C. and a thermal index that is at least twice that of the base polymeric material.

The present disclosure relates to a manufacturing method of a graphene fiber, a graphene fiber manufactured by the same method, and use thereof. The graphene fiber formed by using graphenes of linear pattern can be applied to various fields such as an electric wire and coaxial cable.

The present invention provides to a wearable smart device having electrical wiring comprising a stretchable conductive composition having excellent in durability such as repeated bending properties and repeated twisting properties, a material for realizing the wearable smart device, and a method for producing the wearable start device. An electrical wiring including a fine line having an electrical line interval of 1 mm or less, preferably the line width of less than 1 mm, is formed by printing a paste for forming a stretchable conductor containing metal-based conductive particles and a non-crosslinked elastomer, and further dried and cured at a low temperature condition of 120 C. for 30 minutes. As a result, the wearable smart device having electrical wiring constituted by fine lines without sagging of the edge is obtained.

A resistor includes materials including copper, nickel, and lanthanum boride. A content of the materials is 40% by mass or more with respect to a total material content of the resistor. The copper includes copper particles having a particle diameter of 2.5 m or more. In addition, a circuit board includes a substrate, the resistor on the substrate, a metal layer on the resistor and a glass layer on the resistor. Further, an electronic device includes the circuit board and an electronic component on the metal layer.

An insulation or jacket layer for a coated conductor is composed of (A) a crosslinked silane-functionalized polyolefin, (B) a filler, (C) a reactive branched polysiloxane, and (D) from 0.00 wt % to 20 wt % of a silanol condensation catalyst.

In at least some implementations, a wire includes a core formed from an electrically conductive material and having an outer surface, and a polymeric insulator surrounding the core. The insulator has a resistivity of between 10.sup.5 and 10.sup.9 ohms/square, and the insulator has an inner surface engaged with the core. In at least some implementations, the core is formed from metal and has a conductivity of at least 1106 m. The insulator may include a base material and a conductive material in the base material, wherein the conductive material has a conductivity between 10.sup.5 and 10.sup.6 ohms/square. The insulator may have an outer surface that defines an outer surface of the wire and/or the insulator may have an inner surface engaged with the core.