Method for producing silver-gray, anti-ultraviolet and weather-resistant polyethylene overhead insulating material

Abstract

The invention discloses a silver-gray, anti-ultraviolet and weather-resistant polyethylene overhead insulating material, which relates to the technical field of production of production raw materials for cables. The insulating material mainly comprises ultraviolet absorbent, silver-gray master batch, antioxidant, PE wax, rheological agent, linear low-density polyethylene resin and high-density polyethylene resin. The insulating material is prepared from the high molecular weight polyethylene (PE) resin serving as the base material by processes of adding the silver-gray master batch, the ultraviolet absorbent and the antioxidant into the base material, and mixing, extruding, water-cooling, granulating and airing the mixture and the like. The rheological agent is colloid which enables the antioxidant and the ultraviolet absorbent to wrap the periphery of the silver-gray master batch during mixing and has better dispersibility during producing. The ultraviolet absorbent and the antioxidant have good liquidities and can be uniformly dispersed outside the silver-gray master batch at a high temperature to play a role in preventing ultraviolet rays; and the linear low-density polyethylene resin serving as a main raw material has effects on weather resistance and cracking resistance. The insulating material has good stability and uniform color.

Description

technical field [0001] The invention relates to the production technical field of cable production raw materials, in particular to a production method of polyethylene overhead insulating cable material. Background technique [0002] Overhead wires and cables are inseparable from people's work and life. Overhead wires and cables can be used in almost every place. With the continuous development of the economy, the amount of overhead wires and cables is increasing. Polyethylene (PE) is used for overhead wires and cables. The amount of overhead insulating materials has also doubled. Due to the continuous improvement of people's visual requirements, especially urban development, a considerable part of the appearance of black wires and cables has been replaced by silver gray. [0003] Because conventional overhead wires and cables generally use black weather-resistant polyethylene overhead insulation material, the black material colorant is carbon black itself with anti-ultraviol...

AI Technical Summary

Problems solved by technology

However, during the use of the existing silver-gray overhead wires and cables, if the anti-ultraviolet and weather-resistant functions cannot be achieved, due to changes in environmental factors such as temperature, humidity, light, wind, and rain in the natural environment, aluminum strands of overhead wires and cables will be caused. The outer insulation layer is prematurely aged and cracked, which cannot meet the protection and insulation requirements, and its service life is greatly shortened