Low-smoke halogen-free flame-retardant polyolefin cable material

Abstract

The invention provides a low-smoke halogen-free flame-retardant polyolefin cable material which is prepared from the following raw materials in parts by weight: 30-40 parts of ethylene-vinyl acetate copolymer (EVA), 50-70 parts of high-density polyethylene (HDPE), 4-5 parts of chlorinated polyethylene, 15-20 parts of low-density polyethylene, 40-50 parts of aluminum hydroxide (Al(OH)3), 30-40 parts of magnesium hydroxide (Mg(OH)2), 5-6 parts of amino-terminated polyol ester, 2-3 parts of tributyl phosphate, 5-8 parts of epoxy soybean oil, 5-7 parts of glycerol, 1-2 parts of antioxidant 1035, 1-2 parts of barium stearate, 1-2 parts of nano silicon carbide, 1-2 parts of tripropylene glycol diacrylate, 1-2 parts of phosphate, 1.0-3.0 parts of PE (polyethylene) wax, 1-2 parts of silane coupling agent KH-550, 1-2 parts of zinc stearate and 15-18 parts of modifying filler. Due to the adoption of the technical scheme, the dispersibility of the low-smoke halogen-free flame-retardant polyolefin cable material is obviously enhanced, and the uniformity and surface smoothness of the material system are enhanced.

Description

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

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 magnesium 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 low temperature resistance at room temperature are not very good.

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