Low-smoke halogen-free flame retardant cable material

Abstract

The invention discloses a low-smoke halogen-free flame retardant cable material which is prepared from the following raw materials in parts by weight: 15-25 parts of low-density polyethylene, 15-25 parts of an ethylene-vinyl acetate copolymer, 12-18 parts of EVA resin, 40-60 parts of magnesium hydrate, 5-6 parts of nano silicon carbide, 0.2-0.4 part of aluminum nitride nano powder, 1-2 parts of a cross-linking agent, 1-2 parts of calcium stearate, 0.5-1.0 part of stearic acid, 0.2-0.4 part of an ultraviolet absorbent UV-531, 8-15 parts of a smoke inhibitor, 20-40 parts of a compatilizer, 150-240 parts of a flame retardant, 6-12 parts of a flame retardant additive, 7-10 parts of a processing aid, 3-6 parts of antioxidant and 1-3 parts of a termite preventing agent. The low-smoke halogen-free flame retardant cable material is excellent in flame retardancy and secondary combustion prevention property, generates little smoke, no toxic gas or corrosive gas when combusted and has good low-temperature resistance and ultraviolet resistance.

Description

technical field [0001] The invention relates to the technical field of cable production materials, in particular to a low-smoke, halogen-free, flame-retardant cable material. 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 magnesium hydroxide or aluminum hydroxide to polyolefin substrates to achieve flame ret...

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 aluminum 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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