Halogen-free low-smoke cable material

Abstract

The invention relates to a halogen-free low-smoke cable material which comprises, by weight, 50-80 parts of EVA40, 10-30 parts of POE, 10-20 parts of PPR, 40-60 parts of aluminium hydroxide, 30-60 parts of magnesium hydroxide, 10-30 parts of low temperature glass powder, 5-15 parts of ZB zinc borate, 1-3 parts of a coupling agent A172, 1-3 parts of dimethyl silicone oil, 3-8 parts of polyethylene wax, 3-8 parts of melamine phosphate, and 5-10 parts of a 8112 environment-friendly fire retardant. A preparation method of the cable material comprises steps of mixing and granulation. According to the invention, mechanical property is enhanced, and the cable material has excellent halogen-free, low-smoke, flame-retardant and porcelain-forming effects.

Description

technical field [0001] The invention relates to a cable material, in particular to a halogen-free low-smoke cable material. Background technique [0002] Common halogen-free low-smoke cable materials on the market are usually composed of polyolefin blend resin, flame-retardant fillers aluminum hydroxide, magnesium hydroxide, and some antioxidants added in order to improve heat-resistant life. Sometimes in order to reduce the amount of smoke when it burns, some smoke inhibitors are added, such as vanadium, nickel, molybdenum, iron, silicon, and nitrogen compounds. The use of a large number of inorganic flame retardants endows low-smoke, halogen-free, flame-retardant polyolefin cable materials with characteristics such as flame retardancy, low smoke, halogen-free, and low toxicity, but the filling of a large amount of inorganic flame retardants such as aluminum hydroxide and magnesium hydroxide leads to The material is greatly degraded in terms of physical and mechanical prop...

AI Technical Summary

Problems solved by technology

The use of a large number of inorganic flame retardants endows low-smoke, halogen-free, flame-retardant polyolefin cable materials with characteristics such as flame retardancy, low smoke, halogen-free, and low toxicity, but the filling of a large amount of inorganic flame retardants such as aluminum hydroxide and magnesium hydroxide leads to The material is greatly degraded in terms of physical and mechanical properties, electrical properties and extrusion process performance, resulting in easy cracking of the cable