Low smoke weather resistant electric wire and cable silane crosslinked polyethylene cable material and manufacturing method thereof

Abstract

The invention discloses a low smoke weather resistant electric wire and cable silane crosslinked polyethylene cable material which is characterized by comprising the following raw materials by weight: 65-75 parts of high density polyethylene, 20-25 parts of ethylene-propylene-diene monomer, 16-22 parts of nylon 6, 6-10 parts of PET fiber, 2-4 parts of polyethylene wax, 3-5 parts of dilauryl thiodipropionate, 0.2-0.3 part of sulfur, 15-20 parts of silane coupling agent G-570, 6-9 parts of epoxy soybean oil, 40-45 parts of vinyl acetate-acrylic emulsion, 17-20 parts of brown corundum ash, 0.3-0.6 part of zinc borate, 0.4-0.7 part of benzotriazole and right amount of water; the low smoke weather resistant electric wire and cable silane crosslinked polyethylene cable material is reasonable in formula, by addition of the PET fiber, the wear resistance of the cable material is improved, by addition of the silane coupling agent G-570 for crosslinking with polyethylene complex, the formed mesh structure can effectively prevent oil substances from penetrating and diffusing into blend material molecules, the cable material shows good barrier performance, and by addition of other effective auxiliary, the cable material has cracking resistance, weather resistance, low smoke and ozone resistance and other advantages, and is suitable for mines or high security occasions in special working environment.

Description

technical field [0001] The invention relates to the technical field of cable materials, in particular to a silane cross-linked polyethylene cable material for low-smoke and weather-resistant wires and cables and a preparation method thereof. Background technique [0002] With the development of modern science and technology, people have higher and higher requirements for the quality of wires and cables. The emergence of silane cross-linked polyethylene has made up for the shortcomings of ordinary polyethylene wires and cables. Silane cross-linked polyethylene cable material can improve the transmission capacity and overload capacity of the line, and when the material is used to manufacture cross-linked wires and cables, compared with peroxide cross-linking and radiation cross-linking, it has the required manufacturing equipment and is easy to operate. It has the advantages of convenience and low comprehensive cost. As the insulating material of low-voltage power cables, it ha...

AI Technical Summary

Problems solved by technology

[0003] High-density polyethylene is cheap, light in weight, and excellent in performance, but the linear molecular structure of high-density polyethylene determines its performance defects at higher temperatures, such as decreased intermolecular bonding, prone to deformation, and creep Increase, rigidity and mechanical properties decrease; high-density polyethylene is a non-polar polymer. Although it has good barrier properties to polar solvents such as water, it has high permeability to organic solvents such as xylene and gas barrier properties. not good too

Nylon is a polar polymer, which has good barrier properties to non-polar solvents and gases, but poor barrier properties to polar solvents, and nylon is easy to absorb water, thereby reducing the mechanical properties of the material

Blending high-density polyethylene modified by silane cross-linking with nylon can improve the barrier properties of cable materials, but its function is relatively single. There are still defects in sunlight resistance and other aspects