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Semi-dull polyester low elastic yarn and preparation method thereof

A polyester low-elasticity, semi-matte technology, applied in the field of modified polyester fibers, can solve the problems of long natural degradation time, limited chemical degradation and recycling applications, etc.

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

However, due to the compact structure and high crystallinity of PET, the natural degradation time is very long (the degradation cycle of conventional PET fibers can reach 16-48 years), which greatly limits the application of chemical degradation and recycling in the field of PET waste treatment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] A preparation method of semi-dull polyester low elastic yarn, the steps are as follows:

[0066] (1) prepare modified polyester;

[0067] (1.1) Preparation of doped modified Sb 2 o 3 ;

[0068] (a) Mg(NO 3 ) 2 aqueous solution with a concentration of 8 mol% Sb 2 o 3 The solution is mixed evenly, Sb 2 o 3 The solvent of the solution is oxalic acid, the Mg in the mixture 2+ with Sb 3+ The molar ratio is 2:100;

[0069] (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, and then wash and dry the precipitated product at a temperature of 105° C. for 2.5 hours;

[0070] (c) The dried product was first heated to 400°C and then kept for 2.5h, then heated to 900°C and kept for 1.5h, and finally cooled in air and pulverized to obtain doped modified Sb with an average particle size of 0.4 microns 2 o 3 Powder;

[0071] (1.2) Preparation of doped modified ZrO 2 Powder;

[007...

Embodiment 2

[0090] A preparation method of semi-dull polyester low elastic yarn, the steps are as follows:

[0091] (1) prepare modified polyester;

[0092] (1.1) Preparation of doped modified Sb 2 o 3 ;

[0093] (a) The concentration of 0.5mol% Ca(NO 3 ) 2 Aqueous solution with a concentration of 5 mol% Sb 2 o 3 The solution is mixed evenly, Sb 2 o 3 The solvent of the solution is oxalic acid, the Ca in the mixture 2+ with Sb 3+ The molar ratio is 1:100;

[0094] (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, and then wash and dry the precipitated product at a temperature of 110° C. for 2 hours;

[0095] (c) The dried product was first heated to 400°C and then kept for 2 hours, then heated to 900°C and kept for 1 hour, and finally cooled in air and pulverized to obtain doped modified Sb with an average particle size of 0.4 microns 2 o 3 Powder;

[0096] (1.2) Preparation of dope...

Embodiment 3

[0111] A preparation method of semi-dull polyester low elastic yarn, the steps are as follows:

[0112] (1) prepare modified polyester;

[0113] (1.1) Preparation of doped modified Sb 2 o 3 ;

[0114] (a) Ba(NO 3 ) 2 Aqueous solution with a concentration of 10 mol% Sb 2 o 3 The solution is mixed evenly, Sb 2 o 3 The solvent of the solution is oxalic acid, Ba in the mixture 2+ with Sb 3+ The molar ratio is 3:100;

[0115](b) Add dropwise ammonia water with a concentration of 2 mol / L until the pH value of the mixed solution is 9.5 to obtain a precipitated product, and then wash and dry the precipitated product at a temperature of 105° C. for 3 hours;

[0116] (c) The dried product was first heated to 400°C and then kept for 3 hours, then heated to 900°C and kept for 2 hours, and finally cooled in air and pulverized to obtain doped modified Sb with an average particle size of 0.5 microns 2 o 3 Powder;

[0117] (1.2) Preparation of doped modified ZrO 2 Powder;

[0...

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Abstract

The invention relates to semi-delustering polyester drawn textured yarn and a preparation method thereof. The preparation method comprises the steps that modified polyester pre-oriented yarn (POY) isprepared from modified polyester melt through a POY technology, then modified polyester drawn textured yarn (DTY) is prepared from the modified polyester POY through a DTY technology, and the semi-delustering polyester drawn textured yarn is obtained; a molecular chain of modified polyester comprises a terephthalic acid chain section, an ethanediol chain section and a fluorine-containing diacid chain section; a delustering agent is dispersed in the modified polyester, and the modified polyester is doped with modified ZrO2 powder and modified Sb2O3 powder; and after a prepared product is placedfor 60 months under the conditions that the temperature is 25 DEG C and the relative humidity is 65%, the characteristic viscosity of the product is decreased by 15% to 18%. The preparation method ofthe semi-delustering polyester drawn textured yarn is simple in technology and low in cost, the adding amount of a stibium-series catalyst is decreased, and stibium emission is reduced; and the prepared product is high in natural degradation rate and good in application prospect.

Description

technical field [0001] The invention belongs to the technical field of modified polyester fibers, and relates to a semi-dull polyester low elastic yarn and a preparation method thereof. Background technique [0002] Polyester is the latest in industrialization among the three major synthetic fibers (polyester, nylon and polypropylene), but it has the fastest development speed. At present, the global demand for polyester is still growing at a rate of 6-7% per year. The reason why the demand for polyester is growing so fast is that it has the following characteristics: 1) Polyester has excellent performance, high modulus, and good heat resistance , is an ideal textile fiber material; 2) The mechanical properties of polyester are highly plastic, and it can produce cotton-type, wool-type short fibers, filaments or industrial products through different processing methods; 3) Due to the development of the petrochemical industry, The raw materials needed for polyester production c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92D01F1/10C08G63/682C08G63/86C08G63/85
Inventor 汤方明周文龙张元华
Owner JIANGSU HENGLI CHEM FIBER
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