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Moisture-absorbing and sweat-releasing polyester fibre and preparation method thereof

A polyester fiber, moisture absorption and sweat-wicking technology, applied in the field of polyester fiber, can solve the problems of not being able to meet the processing requirements of PET waste, difficulty in dyeing polyester fiber, poor dyeing performance, and recycling, so as to improve the natural degradation rate, Effect of shortening the dyeing time and increasing the free volume of cavities

Active Publication Date: 2019-04-23
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the current special-shaped cross-section polyester fiber has better moisture absorption and perspiration performance, it still has two major problems: poor dyeing performance and recycling.
The reason for its poor dyeing performance is that the finished polyester fiber is a partially crystalline supramolecular structure, and the molecular chains of the crystalline parts are parallel to each other, and most of them are in the trans conformation, while the amorphous region is mostly in the cis conformation, and the molecular arrangement is quite tight. , resulting in greater difficulty in dyeing polyester fibers. In addition, conventional PET fibers are generally dyed with disperse dyes, which usually need to be dyed at high temperature (greater than 130°C) and high pressure. In addition to increasing the complexity of the process, this method High requirements on equipment, high production cost, poor dyeing performance
The difficulty in its recycling lies in the fact that PET has a compact structure, high crystallinity, and a long natural degradation time (the decomposition cycle of PET is 16 to 48 years), which is time-consuming and labor-intensive, and cannot meet the requirements of the extremely large amount of PET waste to be processed. processing demand

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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  • Moisture-absorbing and sweat-releasing polyester fibre and preparation method thereof
  • Moisture-absorbing and sweat-releasing polyester fibre and preparation method thereof
  • Moisture-absorbing and sweat-releasing polyester fibre and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] A preparation method for moisture-absorbing and sweat-wicking polyester fiber, the steps are as follows:

[0067] (1) prepare modified polyester;

[0068] (1.1) Preparation of doped modified ZrO 2 Powder;

[0069] (1.1.1) Mg(NO 3 ) 2 Aqueous solution with concentration of 22wt% ZrO 2 The solution is mixed evenly, ZrO 2 The solvent of the solution is nitric acid, the Mg in the mixture 2+ with Zr 4+ The mol ratio is 6:100;

[0070] (1.1.2) 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 108°C, and the drying time is 2.5 hours;

[0071] (1.1.3) 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 ZrO with a particle size of 0.4 microns 2 Powder;

[0072] (1.2) Preparation of 2,2,5,5-te...

Embodiment 2

[0092] A preparation method for moisture-absorbing and sweat-wicking polyester fiber, the steps are as follows:

[0093] (1) prepare modified polyester;

[0094] (1.1) Preparation of doped modified ZrO 2 Powder;

[0095] (1.1.1) LiNO with a concentration of 1wt% 3 Aqueous solution with concentration of 20wt% ZrO 2 The solution is mixed evenly, ZrO 2 The solvent of the solution is nitric acid, Li in the mixture + with Zr 4+ The molar ratio is 5:100;

[0096] (1.1.2) 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 3 hours;

[0097] (1.1.3) Heat the dried product to 400°C and keep it warm for 2h, then heat it up to 700°C and keep it warm for 1h, and finally cool it in air and pulverize it to obtain doped modified ZrO with a particle size of 0.4 microns 2 Powder;

[0098] (1.2) Preparation of 2,2,5,5-tetramethyl-3,...

Embodiment 3

[0110] A preparation method for moisture-absorbing and sweat-wicking polyester fiber, the steps are as follows:

[0111] (1) prepare modified polyester;

[0112] (1.1) Preparation of doped modified ZrO 2 Powder;

[0113] (1.1.1) Zn(NO 3 ) 2 Aqueous solution with concentration of 25wt% ZrO 2 The solution is mixed evenly, ZrO 2 The solvent of the solution is nitric acid, Zn in the mixture 2+ with Zr 4+ The molar ratio is 8:100;

[0114] (1.1.2) 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, the drying temperature is 110°C, and the drying time is 2 hours;

[0115] (1.1.3) 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 ZrO with a particle size of 0.4 microns 2 Powder;

[0116] (1.2) Preparation of 2,2,4,4...

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Abstract

The invention relates to a moisture-absorbing and sweat-releasing polyester fibre and a preparation method thereof. The preparation method comprises the following steps: adopting an H-shaped spinneretplate to prepare modified polyester FDY filaments from modified polyester melt according to an FDY process, thereby obtaining the moisture-absorbing and sweat-releasing polyester fibre. The preparation method for modified polyester comprises the following steps: sequentially performing esterification reaction and polycondensation reaction after terephthalic acid, glycol, hexylene glycol with a tertiary butyl side group and doped modified ZrO2 powder are uniformly mixed. A structural formula of the hexylene glycol with the tertiary butyl side group is as follows: the formula is shown in the description. The prepared product has a dyeing rate of 86.7-90.2% under a temperature condition of 120 DEG C, and has a K / S value of 22.58-25.72; after being placed for 60 months under conditions with atemperature of 25 DEG C and relative humidity of 65%, intrinsic viscosity of the moisture-absorbing and sweat-releasing polyester fibre is reduced by 14-21%. The preparation method disclosed by the invention is low in cost and is simple in process; and the prepared product is excellent in dyeing performance, is quick in natural degradation rate, and has a promising application prospect.

Description

technical field [0001] The invention belongs to the technical field of polyester fibers, and relates to a moisture-absorbing and sweat-wicking polyester fiber and a preparation method thereof. Background technique [0002] Polyester fiber has high crystallinity, good strength and good stability, and has excellent properties such as heat resistance, light resistance, acid and alkali resistance, oxidation resistance and friction resistance. It has long been a commonly used substitute for natural fibers and is widely used. In clothing and many other fields. [0003] With the improvement of people's living standards, the comfort, health, safety and environmental protection of clothing fabrics have gradually become the key factors for consumers to choose clothing. As people's demand for outdoor activities increases, sports and leisure clothing has gradually become the mainstream category in the market and is becoming more and more popular among consumers. Comfort is an importan...

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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IPC IPC(8): D01F6/92D01F1/10C08G63/183C08G63/78D01D5/08D01D5/088
CPCC08G63/183C08G63/78D01D5/08D01D5/088D01F1/10D01F6/92
Inventor 尹立新熊克张元华
Owner JIANGSU HENGLI CHEM FIBER
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