COMPOSITION FOR LOW SMOKE, FLAME RETARDANT, HALOGEN-FREE, THERMOPLASTIC INSULATION SHOWING GOOD ELECTRICAL PROPERTIES IN WATER

摘要

The present invention relates to the development of a polyolefin-based composition for manufacturing halogen-free, flame retardant, low smoke emission, thermoplastic insulations showing good electrical properties in water for use in electrical conductor cables. The composition applied as insulation, besides granting the above mentioned features, also shows good characteristics during the extrusion process, so that it can be processed at high speed in the equipment used for its application. The composition of the present invention comprises a mixture of at least two polyolefin-based polymer resins, a first soft and flexible resin and a second and heat-resistance provider resin; at least one compatibilizing and coupling agent; at least one flame retardant; at least one antioxidant; at least one lubricant and optionally at least one nanometric clay for enhancing fire resistance properties.