Low-smoke bittern-free highly fire-proof elastic polyolefin electric cable material

Abstract

The invention discloses a low-smoke non-halogen high-flameproof elastic polyolefin wire and cable plastic, which comprises the following parts: 40-80% EVA elastics (ethene-vinyl acetate copolymer), 20-50% POE elastics (ethene-hexaethene copolymer), 5-15% EMA elastics (ethene-methyl acrylate copolymer), 30-70% magnesium hydroxide or aluminium hydroxide, 20-40% nanometer magnesium hydroxide, 0.1-0.6% DCP (peroxide diisopropyl benzene), wherein the hardness is not more than 85 A with strength not less than 9.0Mpa and extending rate not less than 150%; the flameproof property reaches UL1581 VW-1, which is excellent flexible macromolecular mixing material.

Description

technical field [0001] The invention relates to plastics for wires and cables, in particular to a low-smoke, halogen-free, highly flame-retardant elastic polyolefin plastic polymer mixture for wires and cables. Background technique [0002] As we all know, the conductors of wires and cables are provided with a sheath. In addition to providing the most direct protection function, this sheath should also have basic requirements such as insulation and mechanical properties. It is understood that the main components of low-smoke halogen-free cable materials currently produced and used in China are: EVA (ethylene-vinyl acetate copolymer) 60-100 parts by weight; PE (polyethylene) 0-40 parts by weight; magnesium hydroxide or hydrogen 120-170 parts by weight of aluminum oxide. Although this kind of cable material has the characteristics of low smoke and halogen-free, the hardness of the material is very high, in the range of 90-98 Shore A, and it cannot be used on flexible wires, p...

AI Technical Summary

Problems solved by technology

Although this kind of cable material has the characteristics of low smoke and halogen-free, the hardness of the material is very high, in the range of 90-98 Shore A, and it cannot be used on flexible wires, power cords, personal electronic product wires and other wires and cables that require softness and elasticity. Replacing PVC cable material with superior flexibility

As PVC cable material is a kind of halogen-containing polymer, it will produce thick smoke after burning, and release toxic substances such as hydrogen chloride, which does not meet environmental protection requirements and is an obsolete product.