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Semi-dull polyester drawn yarn and preparing method thereof

A polyester drawing yarn and semi-dull technology, which is applied in the field of polyester fiber, can solve the problems of slow degradation rate of polyester filament and poor dyeing performance of polyester fiber, and achieve the effect of improving dyeing performance and natural degradation performance

Active Publication Date: 2019-05-07
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 of polyester fibers and slow degradation rate of polyester filaments in the prior art, and provide a semi-dull polyester drawn yarn with excellent dyeing performance and high-efficiency degradation and recovery treatment and its preparation method

Method used

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  • Semi-dull polyester drawn yarn and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] The preparation method of semi-dull polyester drawn yarn, the steps are as follows:

[0056] (1) prepare modified polyester;

[0057] (1.1) Preparation of doped modified Bi 2 o 3 Powder;

[0058] (a) Ca(NO 3 ) 2 Aqueous solution with concentration of 22wt% Bi 2 o 3 The solution is mixed evenly, Bi 2 o 3 The solvent of the solution is nitric acid, the Ca in the mixture 2+ with Bi 3+ The mol ratio is 7:100;

[0059] (b) Add dropwise ammonia water with a concentration of 2 mol / L until the pH value of the mixed solution is 10 to obtain a precipitated product, wash and dry the precipitated product at a temperature of 105° C. for 2.5 hours;

[0060] (c) Heat the dried product to 400°C and keep it warm for 2.5h, then heat it up to 700°C and keep it warm for 1.5h, and finally cool it in air and pulverize it to obtain doped modified Bi with an average particle size of 0.45 microns 2 o 3 Powder;

[0061] (1.2) Esterification reaction;

[0062] Make a slurry of tere...

Embodiment 2

[0082] The preparation method of semi-dull polyester drawn yarn, the steps are as follows:

[0083] (1) prepare modified polyester;

[0084] (1.1) Preparation of doped modified Bi 2 o 3 Powder;

[0085] (a) Ca(NO 3 ) 2 Aqueous solution with concentration of 20wt% Bi 2 o 3 The solution is mixed evenly, Bi 2 o 3 The solvent of the solution is nitric acid, the Ca in the mixture 2+ with Bi 3+ The molar ratio is 5:100;

[0086] (b) Add dropwise ammonia water with a concentration of 2 mol / L until the pH value of the mixed solution is 9 to obtain a precipitated product, wash and dry the precipitated product, the drying temperature is 105° C., and the drying time is 2 hours;

[0087] (c) Heat the dried product to 400°C and keep it warm for 2 hours, then heat it up to 700°C and keep it warm for 1 hour, and finally cool it in air and pulverize it to obtain doped modified Bi with an average particle size of 0.4 microns 2 o 3 Powder;

[0088] (1.2) Esterification reaction; ...

Embodiment 3

[0098] The preparation method of semi-dull polyester drawn yarn, the steps are as follows:

[0099] (1) prepare modified polyester;

[0100] (1.1) Preparation of doped modified Bi 2 o 3 Powder;

[0101] (a) Ca(NO 3 ) 2 Aqueous solution with concentration of 25wt% Bi 2 o 3 The solution is mixed evenly, Bi 2 o 3 The solvent of the solution is nitric acid, the Ca in the mixture 2+ with Bi 3+ The molar ratio is 8:100;

[0102] (b) Add dropwise ammonia water with a concentration of 2 mol / L until the pH value of the mixed solution is 9 to obtain a precipitated product, wash and dry the precipitated product, the drying temperature is 110° C., and the drying time is 3 hours;

[0103] (c) Heat the dried product to 400°C and keep it warm for 3 hours, then heat it up to 700°C and keep it warm for 2 hours, and finally cool it in air and pulverize it to obtain doped modified Bi with an average particle size of 0.4 microns 2 o 3 Powder;

[0104] (1.2) Esterification reaction; ...

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Abstract

The invention relates to a semi-dull polyester drawn yarn and a preparing method thereof. The preparing method includes the step of repairing the semi-dull polyester drawn yarn from modified polyestermelt through an FDY process. A preparing method of modified polyester includes the steps of evenly mixing phthalic acid, ethylene glycol, dibasic alcohol with silicon in the main chain, fluorinated dibasic acid, a matting agent and doped and modified Bi2O3 powder, and sequentially conducting esterification reaction and condensation polymerization reaction, wherein the fluorinated dibasic acid is2,2-difluoro-1,3-malonic acid, 2,2-difluoro-1,4-succinic acid, 2,2-difluoro-1,5-glutaric acid or 2,2,3,3-tetrafluoro-1,4-succinic acid. The prepared product has the dye-uptake of 87.5-91.8% under thetemperature condition of 120 DEG C, and the specific viscosity of the product is reduced by 18-26% after the product is placed under the temperature of 25 DEG C and the relative humidity of 65% for 60months. The preparing method is simple in process, and the prepared product is good in dyeing and degrading performance.

Description

technical field [0001] The invention belongs to the technical field of polyester fibers, and relates to a semi-dull polyester drawn yarn and a preparation method thereof. Background technique [0002] Polyester fiber has a series of excellent properties such as high breaking strength and elastic modulus, moderate resilience, excellent heat setting, good heat resistance and light resistance, acid resistance, alkali resistance and corrosion resistance, and the fabric has the advantages of anti-wrinkle, non-ironing and good crispness. , so polyester fibers are widely used in clothing, home textiles and other fields. With the continuous improvement of the social material level, people have higher and higher requirements for sports, leisure, fashion, comfort and health fabrics. Stimulated by huge market benefits, various manufacturers have begun to develop polyester fiber products with high sensitivity and high functionality. Differential fibers such as matt, semi-dull, moistur...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/10C08G63/695C08G63/86
CPCD01F1/10C08G63/86C08G63/695D01F6/84B01J23/18C08K3/22C08K2003/2237C08K5/52C08K2201/014C08L67/02D01F6/92D01F11/08D10B2331/04
Inventor 王丽丽钮臧臧杨超明
Owner JIANGSU HENGLI CHEM FIBER
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