Flame-resistant polyester fiber and preparation method thereof

A technology of flame-retardant polyester and fiber, which is applied in the manufacture of fire-resistant flame-retardant filaments, single-component polyester artificial filaments, and single-component copolyester artificial filaments, etc. It can solve the problems of anti-melt droplet and other difficulties , to achieve the effect of improving anti-droplet performance, improving flame retardant performance and maintaining excellent performance

Active Publication Date: 2016-04-06
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in many application fields (such as military uniforms and protective clothing, etc.), the generation of molten droplets must be avoided, so the use of traditional phosphorus-containing flame retardants to flame-retardant polyester inevitably encounters the problem of anti-melting droplets that is difficult to solve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A preparation method of flame-retardant polyester fiber, the main process is:

[0056] 1) preparation of catalyst magnesium ethylene glycol:

[0057] Add ethylene glycol into the single-chamber electrolytic cell, the supporting electrolyte is magnesium chloride, the metal magnesium block is the anode, and the cathode is graphite; connect direct current, the initial voltage is 6V, the cathode current density is 150mA, and electrolyze for 10 hours at 50°C. Take out the electrode to obtain a white suspension; filter under reduced pressure, wash the white solid with absolute ethanol, and dry to obtain magnesium ethylene glycol;

[0058] (2) Preparation of flame retardant:

[0059] Mix 2-carboxyethylphenylphosphinic acid (CEPPA) and ethylene glycol at a molar ratio of 1:2, and react the mixture at 100°C for 30min to synthesize ethylene glycol 2-carboxyethylphenylphosphinic acid (CEPPA -EG).

[0060] (3) Preparation of polyester, including esterification reaction and polyc...

Embodiment 2

[0074] A preparation method of flame-retardant polyester fiber, the main process is:

[0075] (1) Preparation of catalyst magnesium ethylene glycol:

[0076] Add ethylene glycol into the single-chamber electrolytic cell, the supporting electrolyte is magnesium chloride, the metal magnesium block is the anode, and the cathode is graphite; connect direct current, the initial voltage is 10V, the cathode current density is 200mA, electrolyze at 60°C for 12 hours, after the electrolysis ends Take out the electrode to obtain a white suspension; filter under reduced pressure, wash the white solid with absolute ethanol, and dry to obtain magnesium ethylene glycol;

[0077] (2) Preparation of flame retardant:

[0078] Mix 2-carboxyethylphenylphosphinic acid (CEPPA) and ethylene glycol at a molar ratio of 1:3, and react the mixture at 120°C for 60min to synthesize ethylene glycol 2-carboxyethylphenylphosphinic acid (CEPPA -EG).

[0079] (3) Preparation of polyester, including esterif...

Embodiment 3

[0094] A preparation method of flame-retardant polyester fiber, the main process is:

[0095] (1) Preparation of catalyst magnesium ethylene glycol:

[0096] Add ethylene glycol into the single-chamber electrolytic cell, the supporting electrolyte is magnesium chloride, the metal magnesium block is the anode, and the cathode is graphite; connect direct current, the initial voltage is 8V, the cathode current density is 160mA, and electrolyze for 11 hours at 55°C. Take out the electrode to obtain a white suspension; filter under reduced pressure, wash the white solid with absolute ethanol, and dry to obtain magnesium ethylene glycol;

[0097] (2) Preparation of flame retardant:

[0098] Mix 2-carboxyethylphenylphosphinic acid (CEPPA) and ethylene glycol at a molar ratio of 1:2, and react the mixture at 105°C for 40min to synthesize ethylene glycol 2-carboxyethylphenylphosphinic acid (CEPPA -EG).

[0099] (3) Preparation of polyester, including esterification reaction and poly...

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Abstract

The invention relates to a flame-resistant polyester fiber and a preparation method thereof. The flame-resistant polyester fiber is prepared by spinning flame-resistant polyester and then carrying out ultraviolet irradiation. The limit oxygen index value of the flame-resistant polyester fiber is larger than 30, and the fiber has good molten drop resistance on the basis of flame resistance. Flame retardant 2-carboxyethyl(phenyl)phosphinicacid is used for improving the flame resistance of polyester, and unsaturated double bonds contained in polyester are opened to form crosslinking points under ultraviolet irradiation to form a certain quantity of network structures, so that the heat resistance temperature of the polyester fiber is increased, and the molten drop resistance of the polyester fiber is improved. The unsaturated double bonds are introduced into polyester and are effectively and safely controlled to be crosslinked after preparation of the polyester fiber is completed, the gel content of the fiber obtained after crosslinking is greatly increased, and therefore the mechanical performance, heat resistance, chemical resistance and flame resistance of the polyester fiber can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of polyester industrial yarn preparation, and relates to a flame-retardant polyester fiber and a preparation method thereof, in particular to a polyester fiber containing unsaturated double bonds and a polycondensation catalyst using a mixture of ethylene glycol magnesium and ethylene glycol antimony. Ester and flame-retardant polyester fiber and preparation method thereof. Background technique [0002] Polyethylene terephthalate has the advantages of high modulus, high strength, good heat resistance and shape retention, etc. It is widely used in fiber and non-fiber fields, and is closely related to people's production and life. With the application of polyester materials in civil construction, household goods, electronic appliances and other fields, higher requirements are put forward for their safety performance, especially the flame retardancy performance. Phosphorus-based flame retardants in polyester a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/84D01F1/07C08G63/692C08G63/83C08G63/85C25B3/13
CPCC08G63/6928C08G63/83C08G63/85D01F1/07D01F6/92D01F6/84C08G63/866C25B3/13D01D5/08D10B2401/04
Inventor 王丽丽尹立新刘千涵李峰
Owner JIANGSU HENGLI CHEM FIBER
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