Soft environment-friendly low-smoke halogen-free polyolefin insulating material

Abstract

The invention discloses a soft environment-friendly low-smoke halogen-free polyolefin insulating material. The soft environment-friendly low-smoke halogen-free polyolefin insulating material comprisesthe following components in parts by weight: an ethylene-vinyl acetate copolymer EVA in which the content of VA (vinyl acetate) is 40%, linear low-density polyethylene (metallocene polyethylene) LLDPE, polyethylene EPPE, an ethylene-octene copolymer POE, maleic anhydride grafted metallocene polyethylene, powdered magnesium hydroxide, laminar aluminium hydroxide, polysilazane resin, silicon dioxide aerogel, magnesium stearate, silicone oil, an anti-oxidant, caged phosphate melamine salt, polyphenyl ether, a coupling agent, a lubricant and fluorophosphorous acid. According to the halogen-free efficient flame-retardant polyolefin cable material, the addition of magnesium hydroxide and aluminium hydroxide is reduced, the flame retardancy of a hydroxide can be greatly improved, the influence from addition of a flame retardant on the mechanical property is reduced, the favorable tensile strength is 15 MPa, the favorable elongation at break is 650%, and the mechanical performance of the cable material is further improved.

Description

technical field [0001] The invention relates to a flame-retardant polyolefin insulating material, in particular to a soft, environment-friendly, halogen-free and low-smoke polyolefin insulating material. Background technique [0002] According to relevant literature statistics, most people are not burned to death in a fire, but are suffocated by a large amount of smoke and toxic gas, thus losing the chance to escape and eventually losing their lives. Because it produces less smoke and no toxic gas when it burns, halogen-free low-smoke flame-retardant polyolefin cable materials are gradually replacing traditional PVC cable materials. At present, more and more high-rise buildings, large shopping malls, hospitals, stations, stadiums and other public places have used a large number of halogen-free low-smoke flame-retardant cables. The most commonly used flame retardants for halogen-free low-smoke flame-retardant polyolefin cable materials are magnesium hydroxide, aluminum hydro...

AI Technical Summary

Problems solved by technology

If it is a cable, especially a wire, the flame retardant performance must be burned by a single piece, and the flame retardant filling amount in the halogen-free low-smoke flame-retardant polyolefin cable material used must reach 180%~200%. At this time, at this time The performance of the cable material will be greatly reduced

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