Composite synergistic flame retardant and smoke suppression low smoke halogen-free skeleton material

Abstract

Belonging to the technical field of new materials, the invention relates to a hydromagnesite, huntite and aluminum hydroxide composite synergistic flame retardant and smoke suppression low smoke halogen-free skeleton material. The low smoke halogen-free skeleton material is composed of the following components by weight: 10-20 parts of matrix resin A, 5-10 parts of matrix resin B, 15-30 parts of matrix resin C, 10-20 parts of a compatilizer, 40-60 parts of a flame retardant and smoke suppression agent, 0.5-2 parts of a coupling agent, 2-4 parts of a flow promoter, 0.5-2 parts of a lubricant, and 0.5-2 parts of an antioxidant. Specifically, the flame retardant and smoke suppression agent is a composite synergistic flame retardant and smoke suppression agent formed by hydromagnesite-huntite and aluminum hydroxide in a ratio of 1:1-2. The matrix resin A is an ethylene-vinyl acetate copolymer, the matrix resin B is an ethylene-octene copolymer, and the matrix resin C is polyethylene. The mechanical properties of the low smoke halogen-free skeleton material provided by the invention are improved, and at the same time the flame retardancy is also greatly enhanced.

Description

technical field [0001] The invention relates to a low-smoke, halogen-free frame material, in particular to a low-smoke, halogen-free frame material with a composite synergistic effect of flame retardancy and smoke suppression, and belongs to the technical field of new materials. Background technique [0002] In recent years, it has been found that more than 80% of the causes of death in fire accidents are related to the dense smoke and toxic gases produced by materials. With the rapid development of my country's modern industry, safety and prevention measures should be more and more perfect. In many large public places, in order to avoid the secondary disaster caused by cable fire (a large amount of smoke and acid gas are produced when the cable burns), special The wires and cables used to transmit electric energy and communication signals are not only required to have flame retardant properties such as preventing the flame from spreading when the cable and the surrounding en...

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Problems solved by technology

[0003] In the prior art, although the skeleton material made of polyethylene has good corrosion resistance and impact resistance, there are certain problems in common polyethylene skeleton materials, such as no flame retardant and smoke suppression functions, and a skeleton with good mechanical properties The material is expensive, or some wires that need flame retardant and smoke suppression cannot use low-smoke and halogen-free framework materials, etc.

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