NON-HALOGEN FLAME RETARDANT ELECTRIC WIRE CABLE

摘要

A non-halogen flame retardant electric wire cable includes a conductor, at least one insulating layer formed on an outer periphery of the conductor by coating the conductor with a non-halogen flame retardant resin composition, and a sheath formed on an outer periphery of the outermost insulating layer by coating the outermost insulating layer with the non-halogen flame retardant resin composition. The non-halogen flame retardant resin composition includes a base polymer including any one of ethylene-vinyl acetate copolymer having a vinyl acetate content of 25% by mass or more and polyethylene having a melting peak temperature of 115° C. to 140° C. as measured by DSC and a metal hydroxide. Ratios of the changes in the mass of the sheath and the outermost insulating layer which occur when the sheath and the outermost insulating layer are immersed in xylene heated at 110° C. for 24 hours are 420% or less.

主权项

1. A non-halogen flame retardant electric wire cable comprising:
a conductor; at least one insulating layer on an outer periphery of the conductor, the at least one insulating layer being formed by coating the outer periphery of the conductor with a non-halogen flame retardant resin composition; and a sheath on an outer periphery of an outermost insulating layer that is positioned at an outermost side of the at least one insulating layer, the sheath being formed by coating the outer periphery of the outermost insulating layer with the non-halogen flame retardant resin composition, wherein the non-halogen flame retardant resin composition constituting the outermost insulating layer and the sheath includes,
a base polymer including any one of ethylene-vinyl acetate copolymer (EVA) having a vinyl acetate content (VA content) of 25% by mass or more and polyethylene (PE) having a melting peak temperature of 115° C. to 140° C. as measured by differential scanning calorimetry (DSC); and150 parts to 300 parts by mass of a metal hydroxide relative to 100 parts by mass of the base polymer, and wherein ratios of the changes in the mass of the sheath and the outermost insulating layer which occur when the sheath and the outermost insulating layer are immersed in xylene heated at 110° C. for 24 hours are 420% or less.