Abstract: Materials for making cable jackets, particularly riser and plenum cables, are provided. The materials provide low flammability and allow the cable to meet UL 910 or NFPA 262 or UL 1666 specifications. The material contains PVC resin, a plasticizer, a metal oxide particle, and optionally a brominated phthalate. Preferably, the metal oxide particle is spherical amorphous silicon dioxide. More preferably, the spherical amorphous silicon dioxide has a mean particle size of about 100-200 nm and/or a BET surface area of about 10-30 m2/g. The metal oxide particle is also preferably metal oxide particle non-porous, non-ionic, and/or non-hydrated.

Abstract: A cable that comprises a cable core that includes a plurality of insulated pairs of twisted conductors wherein, the insulation of at least one pair of the plurality of insulated pairs of twisted conductors has inner and outer layers, the inner layer being formed of a zero halogen material that is not flame retardant, the outer layer being formed of a zero halogen material that is substantially flame retardant, and the insulation of at least another pair of the plurality of insulated pairs of twisted conductors is formed of a zero halogen material that is not flame retardant, wherein at least a portion of one of the inner layer and the outer layer is foamed.

Abstract: A cable that comprises a cable core that includes a plurality of insulated pairs of twisted conductors wherein, the insulation of at least one pair of the plurality of insulated pairs of twisted conductors has inner and outer layers, the inner layer being formed of a zero halogen material that is not flame retardant, the outer layer being formed of a zero halogen material that is substantially flame retardant, and the insulation of at least another pair of the plurality of insulated pairs of twisted conductors is formed of a zero halogen material that is not flame retardant.

Abstract: A cable that comprises a cable core that includes a plurality of insulated pairs of twisted conductors wherein, the insulation of at least one pair of the plurality of insulated pairs of twisted conductors is formed of a zero halogen material that is substantially flame retardant, and the insulation of at least another pair of the plurality of insulated pairs of twisted conductors is formed of a zero halogen material that is not flame retardant.

Abstract: An insulated conductor that comprises a conductor and at least one layer of a composite insulation surrounding the conductor. The composite insulation includes insulating material and micro oxide particles adapted to provide at least one of an increase in the flame retardancy of the insulating material and an improvement in the electrical properties of the insulating material.

Abstract: A composite insulation that comprises an insulating material and amorphous micro oxide particles added to the insulating material by at least 1% weight of the composition insulation wherein the micro oxide particles provide at least one of an increase in the flame retardancy of the insulating material, a reduction in smoke generated, and an improvement in the electrical properties of the insulating material.

Abstract: A cable that comprises a plurality of conductors. Each conductor is surrounded by a layer of insulating material. A jacket encloses the plurality of conductors. The jacket is formed of an insulating material. A separator separates the plurality of conductors. The separator is formed of an insulating material. The insulation material of at least one of the plurality of conductors, the jacket, and the separator includes micro oxide particles to form a composite insulation which has at least one of an increased flame retardancy and improved electrical properties over the insulating material without the micro oxide particles, such that the cable has an improved electrical performance.

Abstract: A cable that comprises at least a first pair of conductors. At least one of the conductors of the first pair of conductors has at least one layer of a composite insulation surrounding the conductor. The composite insulation includes insulating material and micro oxide particles adapted to provide an increase in the flame retardancy of the insulating material and an improvement in the electrical performance of the cable.

Abstract: The present invention relates to materials for making cable jackets, particularly riser and plenum cables. The materials provide low flammability and allow the cable to meet UL 910 or NFPA 262 or UL 1666 specifications. The material contains PVC resin, a plasticizer, a metal oxide particle, and optionally a brominated phthalate. Preferably, the metal oxide particle is spherical amorphous silicon dioxide. More preferably, the spherical amorphous silicon dioxide has a mean particle size of about 100-200 nm and/or a BET surface area of about 10-30 m2/g. The metal oxide particle is also preferably metal oxide particle non-porous, non-ionic, and/or non-hydrated.