Shock-resistant chemical erosion-resistant silicone crosslinked polyethylene cable material and manufacturing method thereof

Abstract

The invention discloses a shock-resistant chemical erosion-resistant silicone crosslinked polyethylene cable material. The cable material is prepared from 30-40 parts by weight of low density polyethylene, 40-50 parts by weight of linear high density polyethylene, 8-10 parts by weight of an ethene-ethyl acrylate copolymer, 16-21 parts by weight of nylon 11, 8-12 parts by weight of seaweed carbon fibers, 3.5-4.6 parts by weight of zinc stearate, 0.2-0.4 parts by weight of ditetradecyl ester, 1.05-2.05 parts by weight of benzoyl peroxide, 15-21 parts by weight of methacryloxypropyltrimethoxysilane, 3-5 parts by weight of dioctyl terephthalate, 45-55 parts by weight of aqueous olefine acid resin, 1.3-2.6 parts by weight of boron nitride, 2-4 parts by weight of potassium chloride, 12-16 parts by weight of quartz powder and a proper amount of water. The manufacturing method utilizes easily available raw materials and has simple processes. A net structure obtained by cross-linking of methacryloxypropyltrimethoxysilane and a polyethylene compound effectively prevents oil from permeating and diffusing into blended material molecules so that good obstruction performances are obtained. The cable material with other effective auxiliary agents has the characteristics of shock resistance, wear resistance and chemical erosion resistance.

Description

technical field [0001] The invention relates to the technical field of cable materials, in particular to a shock-resistant and chemical-resistant silane cross-linked polyethylene cable material and a preparation method thereof. Background technique [0002] With the development of modern science and technology, people have higher and higher quality requirements for wires and cables. The appearance of silane cross-linked polyethylene makes up for the shortage 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, the required manufacturing equipment is simple and easy to operate. Convenience, comprehensive low cost and other advantages, as the insulating material of low-voltage power cables, it has become the leading material for ...

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