Preparation method of flame-retardant material for wires and cables

Abstract

The invention provides a preparation method of a flame-retardant material for wires and cables. The preparation method comprises steps as follows: benzyl chloroformate modified levodopa as a monomer is subjected to a polymerization reaction, and a modified dopa polymer is prepared; the modified dopa polymer is dissolved in acetone, and a modified dopa polymer solution is prepared; sodium-based montmorillonite is placed in an ethanol solution, a sodium-based montmorillonite dispersion liquid is prepared, and the pH value of the sodium-based montmorillonite dispersion liquid is adjusted to 9.5-10 with an alkaline solution; the sodium-based montmorillonite dispersion liquid treated with a sonifier cell disrupter for 7-9 min; polyimide fibers are soaked in a hydrochloric acid water solution for 1.2-1.5 h and squeezed to be dewatered for later use, and a polyimide fiber substrate is prepared; the sodium-based montmorillonite dispersion liquid and the modified dopa polymer solution are applied to the surface of the polyimide fiber substrate alternately, the surface is dried once every time when the surface is coated, and the flame retardant material for the wires and cables is prepared finally after being dried. The flame-retardant material has the flame retardance, mechanical property and environmental protection property.

Description

technical field [0001] The invention relates to the technical field of flame retardant materials, in particular to a method for preparing a wire and cable flame retardant material. Background technique [0002] Wire and cable are indispensable products in power engineering. On the premise of ensuring the electrical performance of the wire and cable, the wire and cable must also have high flame retardancy to ensure the safety of the electrical cable during work. [0003] At present, flame retardant wires and cables are usually realized by adding flame retardants, such as halogen flame retardant materials or boron flame retardant materials, to the sheath and insulation layer. [0004] By adding halogen-based flame retardant materials or boron-based flame-retardant materials, although the flame-retardant properties of wires and cables can be improved to a certain extent, the mechanical properties of boron-based flame retardants are poor, and halogen-based flame retardants have ...

AI Technical Summary

Problems solved by technology

[0005] In view of the above situation, one aspect of the present invention provides a method for preparing flame-retardant materials for wires and cables, which solves the problem that existing flame-retardant materials cannot take into account flame-retardant performance, mechanical performance and environmental protection.

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