Flame-retardant silane crosslinked polyethylene insulating material and preparation method thereof

Abstract

The invention discloses a flame-retardant silane crosslinked polyethylene insulating material and a preparation method thereof. The flame-retardant silane crosslinked polyethylene insulating material is prepared from the following components in percentage by weight: 4%-6% of a halogen flame retardant, 4%-7% of ethylene-vinyl acetate, 8%-15% of LLDOE-7042, 75%-85% of LDEP resin, 1%-2% of a silane coupling agent, 0.1-0.3% of an initiator, 0.2-0.4% of an antioxidant, 0.1-0.5% of fluororubber master batch, 0.2-0.5% of organic tin, 0.4-1% of an anti-ultraviolet light absorber and 2-3% of a catalyst. The material provided by the invention has the advantages of good thermal denaturation resistance, strong overload resistance, improved mechanical properties at high temperature, enhanced chemical stability and solvent resistance, reduced cold flow property, and high insulation resistance.

Description

technical field [0001] The invention relates to the technical field of insulating materials, in particular to a flame-retardant silane cross-linked polyethylene insulating material and a preparation method thereof. Background technique [0002] At present, wires and cables have been widely used in industrial production, transportation, construction engineering and mining, even in high-end fields including space and ocean, and cables will be used. With the development of social economy, cable varieties are constantly updated and improved, and the production volume It is also increasing continuously. Because of the application of cables in different fields, people's requirements for them are also increasing. The existing cables cannot meet the needs of the industry due to material or structural problems. Due to different geographical environments, the requirements for cables in the same field of use are also different. Ordinary cables cannot work normally in some strong acid a...

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Problems solved by technology

[0002] At present, wires and cables have been widely used in industrial production, transportation, construction engineering and mining, even in high-end fields including space and ocean, and cables will be used. With the development of society and economy, cable varieties are constantly updated and improved, and the production volume It is also continuously increasing. Because of the application of cables in different fields, people's requirements for them are also increasing. The existing cables cannot meet the needs of the industry due to material or structural problems.

Due to different geographical environments, the requirements for cables in the same field of use are also different. Ordinary cables cannot work normally in some strong acid and alkali environments. It is easy to corrode the internal structure of the cable and distort the signal transmission. At the same time, the high temperature resistance and flame retardancy of the cable cannot meet the requirements

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