THERMOPLASTIC ESTER ELASTOMER-BASED COMPOSITION FOR INSULATION LAYERS AND ELECTRIC CABLE EQUIPPED THEREWITH

摘要

Provided is a halogen-free insulating composition comprising a thermoplastic ester elastomer and an insulating cable equipped with an insulation layer or sheath layer manufactured using the composition. The composition comprises a base resin consisting of a thermoplastic ester elastomer and poly olefin grafted with a polar functional group; and a halogen-free inorganic flame-retardant. The insulation or sheath layer manufactured from said composition is cut into a unit section, and a thermogravimetric analysis is conducted, said unit section from the thermo- gravimetric analysis has no greater than ±5% of the standard deviation for the weight loss compared to the unit section before the thermogravimetric analysis, and the inorganic particles of the residue obtained from dissolving said insulation layer or sheath layer with an organic solvent have an average maximum diameter of 0.5 to 100 µm, 30 weight% or more of said inorganic particles falling within a diameter range of 1.0 to 30 µm.