Flame-retardant, environmentally-friendly and safe polyolefin sheath material and its preparation method

Abstract

The invention provides a flame-retardant, environmentally-friendly and safe polyolefin sheath material. The polyolefin sheath material is prepared from the following raw materials, by weight, 20-30 parts of ethylene propylene diene monomer, 60-80 parts of high-density polyethylene, 8-10 parts of acrylonitrile-butadiene rubber, 8-10 parts of a rubber smoked sheet, 0.5-1.0 part of bisphenol A, 1-3 parts of modified tree ash, 20-30 parts of triethyl citrate, 4-6 parts of magnesium oxide, 0.5-1.0 part of molybdenum trioxide, 30-50 parts of fumed silica, 10-13 parts of nanometer calcium carbonate, 0.5-1.0 part of capsaicin, 0.1-0.3 parts of an antioxidant AW, 0.5-1.0 part of a promoter MBTS, 0.2-0.5 parts of a promoter TMTD, 0.2-0.5 parts of sulfur, 8-10 parts of decabromodiphenylethane, 12-15 parts of antimony (III) oxide and 6-8 parts of zinc borate hydrate. The polyolefin sheath material has the advantages of excellent flame retardation, very less smoke in combustion, no generation of toxic gases or corrosive gases, good low temperature resistance, good oil resistance, good abrasion resistance, and good prevention performance.

Description

technical field [0001] The invention relates to the field of cable materials, in particular to a flame-retardant, environment-friendly and safe polyolefin sheath material and a preparation method thereof. Background technique [0002] There are more and more fires caused by the aging of 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-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 smoked film or smoked film to the polyolefin substrate to achieve the flame-retardant effect. However, the addition of a large amount of inorganic materials affects the physical and mechanical properties and processing performance of the cable material...

AI Technical Summary

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 smoked film or smoked film to the polyolefin substrate to achieve the flame-retardant effect. However, the addition of a large amount of inorganic materials affects the physical and mechanical properties and processing performance of the cable material. Its softness, poor weather resistance, oil resistance, and low temperature resistance at room temperature are not very good.