Flame-retardant cable material and preparation method

Abstract

The invention provides a flame-retardant cable material. The cable material is prepared from the following raw materials, by weight, 80-90 parts of PVC resin, 15-18 parts of buna-N rubber / nano calcium carbonate composite powder rubber, 2.5-5 parts of chlorinated polyethylene, 5-10 parts of polystyrene, 5-10 parts of polyolefin, 3-5 parts of nano jade powder, 10-15 parts of mica powder, 10-12 parts of ammonium polyphosphate, 20-30 parts of DIDP, 0.4-1.0 part of tribasic lead sulfate, 1-2 parts of polyethylene wax, 15-25 parts of aluminum hypophosphite, 1-2 parts of calcium stearate, 1-2 parts of pentaerythritol, 1-2 parts of polytetrafluoroethylene and 5-10 parts of modified filling materials. The cable material has excellent flame resistance and incombustibility. The generated smoke is little during burning, no toxic gas is generated, and no corrosive gas is generated. The cable material has high tensile strength and good rebound resilience.

Description

technical field [0001] The invention relates to the field of cable materials, in particular to a flame-retardant cable material and a preparation method thereof. Background technique [0002] Wire and cable are indispensable and important materials in industrial and agricultural production and modern life. my country is the world's largest producer of wire and cable. The wire and cable industry occupies a very important position in my country's national economy. However, at present, the market The cable material is not resistant to high temperature and aging, and the material turns yellow and becomes brittle after the aging test. There are more and more fires caused by aging wires. How to reduce the incidence of fire and the death rate in the event of 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 mat...

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 acetylene carbon black or acetylene carbon black to polyolefin substrates to achieve flame retardancy. Effect, however, the addition of a large amount of inorganic materials affects the physical and mechanical properties and processing of cable materials

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