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A kind of flame-retardant polyester fiber and preparation method thereof

A flame-retardant polyester and fiber technology, applied in the field of polyester fiber, can solve the problems of poor dyeing performance, high equipment requirements, and high dyeing costs

Active Publication Date: 2020-07-07
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects of poor dyeing performance, high requirements on equipment, high dyeing cost and slow degradation rate in the prior art, and provide a dyeing product with excellent dyeing performance, low requirements on dyeing equipment, low dyeing cost and fast natural degradation rate. Flame-retardant polyester fiber and preparation method thereof

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • A kind of flame-retardant polyester fiber and preparation method thereof
  • A kind of flame-retardant polyester fiber and preparation method thereof
  • A kind of flame-retardant polyester fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] A preparation method of flame-retardant polyester fiber, the steps are as follows:

[0064] (1) prepare modified polyester;

[0065] (1.1) Preparation of 2,5,6,6-tetramethyl-2,5-heptanediol;

[0066] (a) Mix KOH powder, 3-methyl-3-hydroxybutyne, 3,3-dimethyl-2-butanone and isopropyl ether at a molar ratio of 1:1:1.2:2.0, and place in an ice bath Under the conditions of reaction for 2h, cooling crystallization, centrifugation, washing, refining and drying are carried out after the reaction to obtain octyne diol;

[0067] (b) Mix octynediol, ethanol and palladium catalyst in a weight ratio of 2:10:0.01, react at a temperature of 40°C for 50 minutes, continuously feed hydrogen during the reaction, and separate and purify after the reaction to obtain 2,5,6,6-tetramethyl-2,5-heptanediol, the structural formula of 2,5,6,6-tetramethyl-2,5-heptanediol is shown in formula (I);

[0068] (1.2) Preparation of doped modified Bi 2 o 3 Powder;

[0069] (1.2.1) The concentration ...

Embodiment 2

[0088] A preparation method of flame-retardant polyester fiber, the steps are as follows:

[0089] (1) prepare modified polyester;

[0090] (1.1) Preparation of 2,5,6,6-tetramethyl-2,5-heptanediol;

[0091] (a) Mix KOH powder, 3-methyl-3-hydroxybutyne, 3,3-dimethyl-2-butanone and isopropyl ether at a molar ratio of 1.1:1:1.2:2.3, and place in an ice bath Under the conditions of reaction for 2h, cooling crystallization, centrifugation, washing, refining and drying are carried out after the reaction to obtain octyne diol;

[0092] (b) Mix octynediol, ethanol and palladium catalyst in a weight ratio of 2:10:0.01, react at a temperature of 45°C for 50 minutes, continuously feed hydrogen during the reaction, and separate and purify after the reaction to obtain 2,5,6,6-tetramethyl-2,5-heptanediol, the structural formula of 2,5,6,6-tetramethyl-2,5-heptanediol is shown in formula (I);

[0093] (1.2) Preparation of doped modified Bi 2 o 3 Powder;

[0094] (1.2.1) The concentratio...

Embodiment 3

[0107] A preparation method of flame-retardant polyester fiber, the steps are as follows:

[0108] (1) prepare modified polyester;

[0109] (1.1) Preparation of 2,5,6,6-tetramethyl-2,5-heptanediol;

[0110] (a) Mix KOH powder, 3-methyl-3-hydroxybutyne, 3,3-dimethyl-2-butanone and isopropyl ether at a molar ratio of 1.2:1:1.25:2.0, and place in an ice bath Under the conditions of reaction for 3 hours, after the reaction is completed, cooling and crystallization, centrifugation, washing, refining and drying are carried out to obtain octyne diol;

[0111] (b) Mix octynediol, ethanol and palladium catalyst in a weight ratio of 3:10:0.03, react at 40°C for 50 minutes, continuously feed hydrogen during the reaction, and separate and purify after the reaction to obtain 2,5,6,6-tetramethyl-2,5-heptanediol, the structural formula of 2,5,6,6-tetramethyl-2,5-heptanediol is shown in formula (I);

[0112] (1.2) Preparation of doped modified Bi 2 o 3 Powder;

[0113] (1.2.1) The conce...

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Abstract

The invention relates to a flame-retardant polyester fiber and a preparation method thereof. The preparation method includes the step that modified polyester FDY yarn, namely the flame-retardant polyester fiber, is prepared from a modified polyester melt according to the FDY process. A preparation method of modified polyester comprises the step that terephthalic acid, ethylene glycol, 2-CEPPA, 2,5,6,6-tetramethyl-2,5-heptandiol and doped modified Bi2O3 powder are evenly mixed and subjected to an esterification reaction and a polycondensation reaction in sequence, wherein the structural formulaof 2,5,6,6-tetramethyl-2,5-heptandiol is shown in the description. The dye-uptake of the prepared product is 85.3-89.2% under the temperature condition of 120 DEG C, and the K / S value is 22.35-25.43;after the product is placed for 60 months under the condition that the temperature is 25 DEG C and the relative humidity is 65%, the characteristic viscosity of the product is reduced by 13-18%. Thepreparation method is low in cost and simple in process; the prepared product has excellent dyeing property and natural degradability.

Description

technical field [0001] The invention belongs to the technical field of polyester fibers, and relates to a flame-retardant polyester fiber and a preparation method thereof. Background technique [0002] Polyester is the trade name of polyester fiber in my country, and it is an important variety in synthetic fibers. It is a fiber-forming high polymer prepared from purified terephthalic acid (PTA) or dimethyl terephthalate (DMT) and ethylene glycol (EG) through esterification or transesterification and polycondensation reactions— Polyethylene terephthalate (PET), a fiber made by spinning and post-processing. Polyester fiber has many excellent properties: high strength, good dimensional stability, abrasion resistance, light resistance, weather resistance and chemical resistance, etc. [0003] Polyester is currently the fastest growing, highest yielding and most widely used synthetic fiber. Its fiber textiles are widely used in clothing, curtains, curtains, bedding, interior de...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92D01F1/10C08G63/692
Inventor 王丽丽王小雨陈明
Owner JIANGSU HENGLI CHEM FIBER
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