Track resistant jacket material of full medium and self bearing type aerial fiber cable

Abstract

The track resistant jacket material consists of the base resin, the track resistance agent, the antioxidant and the lubricant. The said base resin is the admixture of high-density polyethylene resin and low-density polyethylene resin. Weight percentage of the jacket material is as follows: the high-density polyethylene resin as 4.2%-78.8%, the low-density polyethylene resin as 9.2%-35.3%, the track resistant agent as 9.8%-25%, the antioxidant 0.8%-0.9% and the lubricant 1.1%-1.3%. The aerial fiber cable made from the invented material possesses the good properties of track resistant, environment-resistant and weather-resistant as well as high physical and mechanical performances.

Description

Technical field: [0001] The invention relates to a polyethylene-type electric tracking-resistant material, in particular to an electric-tracking-resistant sheath material for an all-dielectric self-supporting aerial optical cable. Background technique: [0002] At present, the sheathing materials for optical cables developed and produced in China are high-density polyethylene sheathing materials, medium-density polyethylene sheathing materials and low-density polyethylene sheathing materials. For example, the high-density polyethylene sheath material is made of high-density polyethylene as the base resin, plus modified resin and other additives through co-rotating twin-screw extrusion and granulation. High-density polyethylene sheathing material has excellent heat aging resistance, environmental stress cracking resistance, high tensile strength and elongation at break, suitable for cables and cable sheaths, and has sufficient protection for optical fibers . Processing proc...

AI Technical Summary

Problems solved by technology

The optical cable sheathing materials currently developed and produced in China cannot meet the requirements of its electric tracking resistance