Abstract: A thermoplastic material, and in particular a jacket for an electrical cable, and more particularly a jacket for a THHN electrical cable, includes a polyamide base material, a silicon elastomer and an ethylene polymer modified with an unsaturated aliphatic diacid anhydride. The silicon elastomer does not migrate through the jacket. The jacket has a lower coefficient of friction than a cable with a jacket that does not have a silicon elastomer incorporated therein, and the resulting cable requires less force to install than a cable without a lubricant incorporated therein. The cable also has improved flame resistance and elongation-to-break properties. Methods for making these thermoplastic materials are also described.

Abstract: An insulating composition resistant to tracking for an electrical cable, wherein the insulating composition comprises a polymer matrix based on polyethylene or its copolymers, with a density of at least 0.94 g/cm3, and including no more than 0.25% by weight of silicone oil respect to the total weight of said composition.

Abstract: A thermoplastic material, and in particular a jacket for an electrical cable, and more particularly a jacket for a THHN electrical cable, includes a polyamide base material, a silicon elastomer and an ethylene polymer modified with an unsaturated aliphatic diacid anhydride. The silicon elastomer does not migrate through the jacket. The jacket has a lower coefficient of friction than a cable with a jacket that does not have a silicon elastomer incorporated therein, and the resulting cable requires less force to install than a cable without a lubricant incorporated therein. The cable also has improved flame resistance and elongation-to-break properties. Methods for making these thermoplastic materials are also described.

Abstract: A coaxial cable has a return loss higher than 36 dB and a structural return loss higher than 38 dB within the frequency range from 500 to 1000 MHz. The coaxial cable has a polyolefin inner solid insulating layer having an adhesive strength of between 40 and 60 lb/in2 to a central conductor, an intermediate foamed polyolefin layer surrounding the polyolefin inner solid insulating layer, an outer polyolefin solid insulating layer surrounding the intermediate foamed polyolefin layer, a metallic screen layer that has of a shield made of a metallic foil and a braid surrounding the outer polyolefin solid insulation layer, and a protective jacket surrounding the metallic screen layer.