Irradiation crosslinking low-smoke and halogen-free flame retardant cable material and its preparation method

Abstract

The invention provides an irradiation crosslinking low-smoke and halogen-free flame retardant cable material. The cable material is prepared from the following raw materials, by weight, 100 parts of ethylene propylene diene monomer, 60-80 parts of high-density polyethylene, 9-11 parts of a maleic anhydride grafted polyolefin elastomer, 0.2-0.4 parts of an ultraviolet ray absorber UV-9, 10-20 parts of an EVA resin, 8-10 parts of aluminum hydroxide, 0.5-1.0 part of butyl stearate, 1-3 parts of zinc stearate, 0.2-0.5 parts of dicumyl peroxide (DCP), 1-2 parts of TAIC, 4-6 parts of zinc oxide, 0.5-1.0 part of molybdenum trioxide, 30-50 parts of carbon black N3393, 10-13 parts of nanometer calcium carbonate, 0.5-1.0 part of an antioxidant 4020, 0.1-0.3 part of an antioxidant MB, 8-10 parts of triphenyl phosphate, 12-15 parts of antimony (III) oxide and 6-8 parts of zinc borate hydrate. The cable material has the advantages of excellent flame retardation, very less smoke in combustion, no generation of toxic gases or corrosive gases, good weatherability, good abrasion resistance, good insulation property, and ultraviolet resistance.

Description

technical field [0001] The invention relates to the field of cable materials, in particular to a radiation cross-linked low-smoke halogen-free flame-retardant cable material and a preparation method thereof. Background technique [0002] With the rapid development of the global economy and the enhancement of human awareness of environmental protection, the requirements for the quality and performance of wires and cables in various fields are getting higher and higher, and there are more and more fires caused by the aging of wires and cables. How to reduce the 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 aluminum hydroxide or magnesium hydroxide to polyole...

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 aluminum hydroxide or magnesium hydroxide to polyolefin substrates to achieve flame retardancy. 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 flame retardancy at room temperature are not very good.

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