HIGH TEMPERATURE INSULATING TAPE AND WIRE OR CABLE SHEATHED THEREWITH Russian patent published in 2016 - IPC B32B27/08 B32B27/28 H01B3/04 H01B7/00 

FIELD: cables.

SUBSTANCE: invention relates to high performance, high temperature resistant wires and cables as well as to a method for production thereof. Said wires and cables are fire-resistant and are used in heavy operating conditions, such as drilling or mining operations, industrial, military, aerospace and sea applications. Tape (20) comprises a laminated or co-extruded insulating first layer (24) of a polymer matrix in which mica particles are dispersed and second layer (26) of a polyether ether ketone (PEEK) or a blend or alloy thereof containing at least 50 wt% of PEEK. Surface of at least one said layer, opposite other said layer, is coated with fluoropolymer film (25). Sid tape can be used to form a multilayer coating on conductor (10) such as an electric wire. Outer protective layer (28) of a fluoropolymer such as PTFE may be applied around wrapped tape, by wrapping or extrusion.

EFFECT: technical result is production of wires and cables with good insulation, high temperature resistance, and also having improved mechanical properties at high temperatures.

59 cl, 4 dwg, 1 tbl