A kind of edible flame-retardant polyester fiber and its preparation method

A technology of flame-retardant polyester and fiber, applied in the field of polyester fiber, to achieve the effect of increasing activation energy, increasing thermal degradation temperature, and reducing droplet

Active Publication Date: 2021-12-17
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of certain limitations in improving the flame-retardant performance of polyester in the prior art, the present invention provides a flame-retardant polyester fiber for clothing and a preparation method thereof

Method used

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  • A kind of edible flame-retardant polyester fiber and its preparation method
  • A kind of edible flame-retardant polyester fiber and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A preparation method for taking flame-retardant polyester fiber, the specific steps are as follows:

[0054] (1) Preparation of modified polyester:

[0055] (1.1) Esterification reaction;

[0056] Terephthalic acid, ethylene glycol, 2,6-pyridinedicarboxylic acid and flame retardant 2-hydroxyethylphenylphosphorous acid with a molar ratio of 1:1.2:0.06:0.03 were made into a slurry, and the catalyst (three Antimony oxide), stabilizer (triphenyl phosphate) and zinc chloride are mixed evenly, the addition of catalyst and stabilizer is respectively 0.02wt% and 0.01wt% of terephthalic acid addition, the addition of zinc chloride It is 0.9mol% of the amount of terephthalic acid added; then pressurize in a nitrogen atmosphere to carry out the esterification reaction, the pressurized pressure is 0.2MPa, the temperature of the esterification reaction is 252 ° C, and the termination condition of the esterification reaction is: esterification The water distillation amount in the r...

Embodiment 2

[0072] A preparation method for taking flame-retardant polyester fiber, the specific steps are as follows:

[0073] (1) Preparation of modified polyester:

[0074] (1.1) Esterification reaction;

[0075] Terephthalic acid, ethylene glycol, 2,6-pyridinedicarboxylic acid and flame retardant 2-hydroxyethylphenylphosphorous acid with a molar ratio of 1:1.2:0.07:0.03 were made into slurry, and catalyst (three Antimony oxide), stabilizer (triphenyl phosphate) and zinc chloride are mixed uniformly, the addition of catalyst and stabilizer is respectively 0.01wt% and 0.02wt% of terephthalic acid addition, the addition of zinc chloride It is 1mol% of the amount of terephthalic acid added; then pressurize the esterification reaction in a nitrogen atmosphere, the pressurized pressure is 0.1MPa, the temperature of the esterification reaction is 250°C, and the termination condition of the esterification reaction is: esterification reaction The amount of water distilled in reaches 90% of t...

Embodiment 3

[0091] A preparation method for taking flame-retardant polyester fiber, the specific steps are as follows:

[0092] (1) Preparation of modified polyester:

[0093] (1.1) Esterification reaction;

[0094] Terephthalic acid, ethylene glycol, 2,6-pyridinedicarboxylic acid and flame retardant 2-hydroxyethylphenylphosphorous acid with a molar ratio of 1:1.2:0.08:0.03 were made into slurry, and catalyst (three Antimony oxide), stabilizer (trimethyl phosphate) and zinc chloride are mixed evenly, the addition of catalyst and stabilizer is respectively 0.03wt% and 0.02wt% of terephthalic acid addition, the addition of zinc chloride It is 1.1mol% of the amount of terephthalic acid added; then carry out the esterification reaction under pressure in a nitrogen atmosphere, the pressurized pressure is 0.2MPa, the temperature of the esterification reaction is 254°C, and the termination condition of the esterification reaction is: esterification The water distillation amount in the reaction...

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Abstract

The invention relates to a flame-retardant polyester fiber for clothing and a preparation method thereof. The flame-retardant polyester fiber for clothing is obtained by spinning and winding the modified polyester through solid-phase polycondensation and thickening; the preparation method of the modified polyester is as follows: Mix terephthalic acid, ethylene glycol, 2,6-pyridinedicarboxylic acid, flame retardant 2-hydroxyethylphenylphosphinic acid and zinc chloride, and then carry out esterification reaction and polycondensation reaction successively to obtain modified polyester The obtained polyester segment of taking flame-retardant polyester fiber includes terephthalic acid segment, ethylene glycol segment, flame retardant 2-hydroxyethylphenyl hypophosphorous acid segment and 2,6-pyridine di formic acid segments, and between 2,6-pyridinedicarboxylic acid segments of different polyester segments via Zn 2+ Coordination; the molar ratio of terephthalic acid segment, 2,6-pyridinedicarboxylic acid segment and flame retardant 2-hydroxyethylphenylphosphinic acid segment is 1:0.06~0.08:0.03~0.05; 2, The O atom on the carbonyl and the N atom on the pyridine participate in the coordination of the 6-pyridinedicarboxylic acid chain segment. The invention improves the thermal degradation temperature of the polyester through coordination, so as to effectively reduce the melting drop.

Description

technical field [0001] The invention belongs to the technical field of polyester fibers, and relates to a flame-retardant polyester fiber for clothing and a preparation method thereof. Background technique [0002] The high symmetry of the molecular chain structure of polyester and the rigidity of the benzene ring make the product have good mechanical processing performance, chemical corrosion resistance and anti-microbial erosion performance, and because of the advantages of relatively low price and easy recycling, it is widely used It is used in various fields such as fibers, films, and plastic products. However, polyester fabrics are flammable and will drip after burning, causing irreparable losses to personal and property safety, which limits the application of polyester fabrics in military uniforms and protective clothing. Therefore, domestic researchers have been devoting themselves to the flame retardant research of polyester fabrics. [0003] At present, the proble...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/84C08G63/692C08G63/80
CPCD01F6/84C08G63/6926C08G63/80
Inventor 尹立新沈建根张元华王丽丽王雪杨超明
Owner JIANGSU HENGLI CHEM FIBER
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