NON-HALOGEN FLAME RETARDANT SHIELD CABLE

摘要

PROBLEM TO BE SOLVED: To reduce conversion dielectric constant to a specified value or less to obtain high flame resistance by covering a center conductor with a foam of a resin composition added with a non-halogen-based flame retardant material to a base polymer of a mixture of polyolefin and polyphenylene ether of a specified ratio, and sequentially forming an outer conductor layer and a jacket layer on the foamed body. SOLUTION: A center conductor is covered with the foam of a flame retardant resin composition, and an outer conductor layer and a jacket layer are sequentially formed on the foam to constitute a shield cable. The foam is made of a flame retardant resin composition prepared by adding a non-halogen-based flame retardant material to the base polymer of a mixture of polyolefin and polyphenylene ether having a weight ratio of 90/10-20/80. A non-halogen flame retardant shield cable is obtained with conversion dielectric constant of the formed insulator <=2.3, and the foamed insulating cable excluding the jacket layer and the outer conductor layer satisfying the VW-1 vertical firing test of the UL standard.