POLYETHYLENE INSULATION COMPOSITION FOR CROSSLINKING BY ELECTRON BEAM IRRADIATION AND HIGH FREQUENCY COAXIAL CABLE USING THIS

摘要

PPROBLEM TO BE SOLVED: To provide a polyethylene insulation composition for crosslinking by electron beam irradiation having a small dielectric loss tangent (tan ) in a high frequency band (about 1-10GHz) and sufficient heat-resisting property (heat aging property and solder heat-resisting property), not forming a shrinking-back when extrusion molding is carried out, and having good extrudability and excellent insulator surface property, and to provide the high frequency coaxial cable with little attenuation in the high frequency band by using the polyethylene insulation composition as a crosslinking insulator for the high frequency coaxial cable. PSOLUTION: This polyethylene insulation composition for crosslinking by electron beam irradiation contains 0.03-0.20 wt% of a hindered phenol-based antioxidizing agent in polyethylene whose density is 0.920-0.951 g/ml and melt tension is 4-20 g and which . PCOPYRIGHT: (C)2005,JPO&NCIPI