Silane crosslinked polyethylene cable material and preparation method

Abstract

The invention provides a silane crosslinked polyethylene cable material. The cable material is prepared from the following raw materials, by weight, 80-90 parts of low-density polyethylene, 10-20 parts of high-density polyethylene, 5-10 parts of polyvinyl chloride, 2-3 parts of silane coupling agent KH5502, 0.1-0.2 part of anti-oxidants, 0.1-0.5 part of nano titanium dioxide, 0.2-0.3 part of dioctyltin dilaurate, 15-20 parts of light calcium carbonate, 1-2 parts of talcum powder, 5-10 parts of modified filling materials, 0.2-0.5 part of asphalt, 15-25 parts of aluminum hypophosphite, 1-2 parts of polyisobutylene and 1-2 parts of polytetrafluoroethylene. After tests, various technical indexes of the cable material all reach levels of the same kind technologies abroad. The processing performances and the cable surface quality are good. The cable material can realize rapid crosslinking, the production efficiency is raised, and the cost is reduced.

Description

technical field [0001] The invention relates to the field of cable materials, in particular to a silane crosslinked polyethylene cable material and a preparation method thereof. Background technique [0002] Wire and cable are indispensable and important materials in industrial and agricultural production and modern life. my country is the world's largest producer of wire and cable. The wire and cable industry occupies a very important position in my country's national economy. However, at present, the market The cable material is not resistant to high temperature and aging, and the material turns yellow and becomes brittle after the aging test. There are more and more fires caused by aging wires. How to reduce the incidence of fire and the death rate in the event of fire, low smoke, halogen-free, flame retardant, and environmental protection have also become the development direction of the wire and cable industry. Among them, the demand for halogen-free low-smoke flame-ret...

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Problems solved by technology

Among them, the demand for halogen-free low-smoke flame-retardant cable materials is increasing. At present, most of the production of halogen-free low-smoke flame-retardant cable materials is to add a large amount of acetylene carbon black or acetylene carbon black to polyolefin substrates to achieve flame retardancy. Effect, however, the addition of a large amount of inorganic materials affects the physical and mechanical properties and processing of cable materials

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