HDPE (high-density polyethylene) cable sheath material

Abstract

The invention relates to an HDPE (high-density polyethylene) cable sheath material. The HDPE cable sheath material comprises the following components in parts by weight: 100 parts of HDPE, 0.1-5 parts of melt viscosity modifier, 0.01-2 parts of heat stabilizer, 0.01-10 parts of white oil, 1-80 parts of toughener, 0.01-10 parts of carbon black masterbatch, 0.01-10 parts of antioxidant and 0.01-10 parts of nucleating agent; the melt flow rate of a product is more than 10g / 10min, which is greatly improved in comparison with the melt flow rate of 0.1-0.3g / 10min of the existing cable sheath material; the elongation rate is 500%, which is greatly improved in comparison with the elongation rate of 23% of the existing HDPE; the tensile strength is 10-20MPa, and the density is 0.959-0.965g / cm<3>; the brittle temperature of the product is -70 DEG C, the volume resistivity is more than 2*1016 omega.cm, the breakdown strength is 20KV / mm, and the resistance to environmental stress cracking is not less than 50h; and the product has the advantages of good toughness, aging resistance and resistance to chemical corrosion, and can be widely produced and used for continuously replacing existing materials.

Description

technical field

[0001] The application belongs to the field of cable sheathing materials, in particular to a HDPE cable sheathing material. Background technique

[0002] The black high-density polyethylene material used as the sheath material is made of high-density polyethylene base resin for sheath materials, adding high-quality carbon black masterbatch and other related processing aids, and kneading and granulating. Factors such as high-quality carbon black masterbatch content, carbon black particle size, and dispersion have a great impact on the long-term performance of optical cables such as ultraviolet radiation aging resistance and heat aging resistance. With the development of social urbanization, science and technology, and humanization, and the rapid development of the plastic industry, cable materials are getting closer to people's lives, followed by an increase in the use of cable sheathing materials, and most of the cable sheathing Problems such as easy aging, ...