Preparation method of flame-retardant material for wires and cables

A flame-retardant material, wire and cable technology, applied in the field of flame-retardant materials, can solve the problem that flame-retardant materials cannot take into account flame-retardant performance, mechanical performance and environmental protection, etc., to ensure mechanical performance, improve flame retardancy, and good environmental protection Effect

Active Publication Date: 2017-12-22
JIANGXI CHENGDA ENG CONSULTING & SUPERVISION +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 so

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  • Preparation method of flame-retardant material for wires and cables

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[0029] Embodiments of the present invention provide a method for preparing a wire and cable flame retardant material, comprising:

[0030] 1) Preparation of modified dopa polymer solution:

[0031] Using levodopa modified by benzyl chloroformate as a monomer, the modified dopa polymer is prepared through polymerization;

[0032] Dissolving the modified dopa polymer in acetone to prepare a modified dopa polymer solution;

[0033] 2) Preparation of sodium-based montmorillonite dispersion:

[0034] placing the sodium-based montmorillonite in an ethanol solution to prepare a sodium-based montmorillonite dispersion, and using an alkaline solution to adjust the pH value of the sodium-based montmorillonite dispersion to 9.5-10;

[0035] Using an ultrasonic cell pulverizer to treat the sodium-based montmorillonite dispersion for 7 to 9 minutes to obtain a uniformly dispersed sodium-based montmorillonite dispersion;

[0036] 3) Preparation of polyimide fiber substrate:

[0037] Soa...

Embodiment 1

[0043] A method for preparing a wire and cable flame retardant material, comprising:

[0044] 1) Preparation of modified dopa polymer solution:

[0045] With levodopa modified by benzyl chloroformate as a monomer, a modified dopa polymer is obtained through a polymerization reaction, and the molecular weight of the modified dopa polymer obtained is at least 6000 g / mol;

[0046] Dissolving the modified dopa polymer in acetone to prepare a modified dopa polymer solution, the concentration of the prepared modified dopa polymer solution is respectively 0.02wt%;

[0047] 2) Preparation of sodium-based montmorillonite dispersion:

[0048] The sodium-based montmorillonite is placed in an ethanol solution with a concentration of 50% V / V to make a sodium-based montmorillonite dispersion, and the concentration of the prepared sodium-based montmorillonite dispersion is 0.22wt%. The NaOH solution of 1 adjusts the pH value of the sodium-based montmorillonite dispersion to 9.5;

[0049] ...

Embodiment 2

[0057] A method for preparing a wire and cable flame retardant material, comprising:

[0058] 1) Preparation of modified dopa polymer solution:

[0059] With levodopa modified by benzyl chloroformate as a monomer, a modified dopa polymer is obtained through polymerization, and the molecular weight of the modified dopa polymer obtained is as large as 6300g / mol;

[0060] Dissolving the modified dopa polymer in acetone to prepare a modified dopa polymer solution, the concentration of the prepared modified dopa polymer solution is respectively 0.06wt%;

[0061] 2) Preparation of sodium-based montmorillonite dispersion:

[0062] The sodium-based montmorillonite is placed in an ethanol solution with a concentration of 53% V / V to make a sodium-based montmorillonite dispersion, and the concentration of the prepared sodium-based montmorillonite dispersion is 0.24wt%. adjusting the pH value of the sodium-based montmorillonite dispersion to 9.7 with a 1.2M NaOH solution;

[0063] Using ...

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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 ...

Claims

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Application Information

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IPC IPC(8): D06M11/79D06M15/37D06M11/13H01B3/30D06M101/30
CPCD06M11/13D06M11/79D06M15/37D06M2101/30D06M2200/30H01B3/308
Inventor 张帆张先德曾亮
Owner JIANGXI CHENGDA ENG CONSULTING & SUPERVISION
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