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Super-bright polyester partially oriented yarn and preparation method thereof

A technology of pre-oriented yarn and polyester, 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 shortening dyeing time, improving dyeing performance, and increasing void free volume.

Active Publication Date: 2019-05-10
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 super-bright polyester pre-oriented yarn with excellent dyeing performance and high-efficiency degradation and recovery treatment and its preparation method

Method used

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  • Super-bright polyester partially oriented yarn and preparation method thereof
  • Super-bright polyester partially oriented yarn and preparation method thereof
  • Super-bright polyester partially oriented yarn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] A preparation method of super bright polyester pre-oriented yarn, the steps are as follows:

[0066] (1) prepare modified polyester;

[0067] (1.1) Synthesis of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, the method is: after mixing palladium acetate and dimethyl di-tert-butylethylene, add mass concentration It is 10% hydrogen peroxide solution, reacted at 72°C for 3 hours, cooled, crystallized and refined to obtain 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, wherein The mass ratio of dimethyldi-tert-butylethylene, hydrogen peroxide solution and palladium acetate is 1:2.0:0.015, and the structural formula of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol is as follows Shown in formula (I);

[0068] (1.2) Preparation of doped modified ZrO 2 Powder;

[0069] (a) 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] (b) Add d...

Embodiment 2

[0086] A preparation method of super bright polyester pre-oriented yarn, the steps are as follows:

[0087] (1) prepare modified polyester;

[0088] (1.1) Synthesis of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, the method is: after mixing palladium acetate and dimethyl di-tert-butylethylene, add mass concentration It is 11% hydrogen peroxide solution, reacted at 70°C for 4 hours, cooled, crystallized and refined to obtain 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, wherein The mass ratio of dimethyldi-tert-butylethylene, hydrogen peroxide solution and palladium acetate is 1:1.8:0.015, and the structural formula of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol is as follows Shown in formula (I);

[0089] (1.2) Preparation of doped modified ZrO 2 Powder;

[0090] (a) LiNO with a concentration of 1 wt% 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...

Embodiment 3

[0103] A preparation method of super bright polyester pre-oriented yarn, the steps are as follows:

[0104] (1) prepare modified polyester;

[0105] (1.1) Synthesis of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, the method is: after mixing palladium acetate and dimethyl di-tert-butylethylene, add mass concentration It is 12% hydrogen peroxide solution, reacted at 74°C for 4 hours, cooled, crystallized and refined to obtain 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, wherein The mass ratio of dimethyldi-tert-butylethylene, hydrogen peroxide solution and palladium acetate is 1:1.6:0.015, and the structural formula of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol is as follows Shown in formula (I);

[0106] (1.2) Preparation of doped modified ZrO 2 Powder;

[0107] (a) 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;

[0108] (b) Add dro...

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Abstract

The invention relates to a super-bright polyester partially oriented yarn and a preparation method thereof. The preparation method comprises the following steps: uniformly mixing terephthalic acid, ethylene glycol, dihydric alcohol containing silicon on a main chain, a fluorine-containing binary acid, 2,2,3,4,5,5-hexamethyl-3,4-hexanediol and doped modified ZrO2 powder, sequentially carrying out an esterification reaction and a condensation polymerization reaction so as to prepare modified polyester; and preparing modified polyester POY yarns from the modified polyester melt according to a POYprocess by adopting a triangular spinneret plate, thereby obtaining the super-bright polyester partially oriented yarn. The prepared super-bright polyester partially oriented yarn is high in dye-uptake, K / S value and color fastness during dyeing, and the national degradation speed is high. According to the addition of the 2,2,3,4,5,5-hexamethyl-3,4-hexanediol and the dihydric alcohol containing silicon on the main chain, the dyeing property of fibers is improved, and due to the addition of the fluorine-containing binary acid and the doped modified ZrO2 powder, the degradation performance of the polyester is improved; and the prepared product is excellent in dyeing property and degradation property.

Description

technical field [0001] The invention belongs to the technical field of polyester fibers, and relates to a super bright polyester pre-oriented yarn and a preparation method thereof. Background technique [0002] Polyester (that is, PET fiber) is the trade name of polyester fiber in my country and is an important variety in synthetic fibers. With the expansion of polyester production scale, the production technology has also been greatly improved. From the initial production of conventional products, it gradually develops towards the production direction of high-tech, functional and differentiated fibers. The production of differentiated fiber products mainly There are two ways: one is to use new monomers or synthetic methods to manufacture new high polymers. The main technologies of this method include polymer modification technology, ultrafine fiber manufacturing technology, special-shaped fiber manufacturing technology and composite spinning technology, etc. Another method...

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): D01F6/92D01F1/10C08G63/695C08G63/78
Inventor 汤方明周文龙张元华
Owner JIANGSU HENGLI CHEM FIBER
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