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Stock solution coloring polyester fiber and preparation method thereof

A polyester fiber and dope dyeing technology, applied in the textile field, can solve the problems of spinnability deterioration, poor compatibility of colored polyester melt, etc., and achieve good spinnability, compatibility problems, and stable quality

Active Publication Date: 2018-02-23
CHINESE TEXTILE ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] As introduced in the background technology section, in the prior art, there are problems in the colored polyester melt due to colorant agglomeration, poor compatibility between the colorant carrier and the polyester component, and poor plasticizer and dispersant for colorant dispersion The problem of deterioration of spinnability due to the addition of molecular substances, etc.

Method used

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  • Stock solution coloring polyester fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Add the colorant C.I. Solvent Red 135 and polybutylene adipate polyol with a molecular weight of 4000 into the coloring mother liquor preparation tank at a weight ratio of 30:70, and stir it under the condition that the preparation temperature is 150°C. The coloring agent C.I. solvent red 135 is fully dissolved in the polybutylene adipate polyol to obtain the coloring mother liquor with the content of the coloring agent C.I. solvent red 135 being 30 wt%. Then move the prepared coloring mother liquor into the coloring mother liquor supply tank for standby, wherein the supply temperature of the coloring mother liquor is 100°C.

[0047] Inject the ethylene terephthalate oligomer with a degree of polymerization of 5 from the esterification system into the above-mentioned colored mother liquor equivalent to 12 wt% of its mass and 0.05 wt% of antimony-based catalyst, and the material is homogenized by high shear After the pump is mixed evenly, it enters the pre-condensation s...

Embodiment 2

[0051] Add the colorant C.I. Solvent Red 168 and polyethylene succinate polyol with a molecular weight of 300 into the coloring mother liquor preparation tank at a weight ratio of 10:90, and stir to make The coloring agent C.I. solvent red 168 is fully dissolved in the polyethylene succinate polyol to obtain a coloring mother liquor with the content of the coloring agent C.I. solvent red 168 being 10 wt%. Then the prepared coloring mother liquor is moved into the coloring mother liquor supply tank for standby, wherein the supply temperature of the coloring mother liquor is 50°C.

[0052] Inject the above-mentioned colored mother liquor and 0.1wt% titanium series catalyst that are equivalent to its quality 5.3wt% in the butylene terephthalate oligomer that the degree of polymerization from the esterification system is 3, and the material is homogeneous through high shear After the chemical pump is mixed evenly, it enters the pre-condensation system for pre-condensation reaction...

Embodiment 3

[0056] Add the colorant C.I. Solvent Yellow 116 and polytrimethylene sebacate polyol with a molecular weight of 2000 into the coloring mother liquor preparation tank at a weight ratio of 10:90, and make the colorant C.I. Solvent Yellow 116 was fully dissolved in polytrimethylene sebacate polyol to obtain a coloring mother liquor with a colorant C.I. Solvent Yellow 116 content of 10 wt%. Then move the prepared coloring mother liquor into the coloring mother liquor supply tank for standby, wherein the supply temperature of the coloring mother liquor is 80°C.

[0057] Inject the propylene glycol terephthalate oligomer with a polymerization degree of 3 from the esterification system into the above-mentioned colored mother liquor equivalent to 10wt% of its mass and 0.2wt% of the titanium-based catalyst, and the materials are mixed by a high-shear homogenizing pump After uniformity, enter the precondensation system for precondensation reaction. The temperature of the precondensation...

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Abstract

The invention belongs to the technical field of textiles, and particularly relates to a stock solution coloring polyester fiber and a preparation method thereof. The preparation method comprises the following steps: (1) adding a coloring agent into carrier polyester polyhydric alcohols, and preparing into uniform coloring mother solution; (2) adding the coloring mother solution into a polyester oligomer, uniformly mixing, and successively carrying out pre-condensation reaction and final condensation reaction in a condensation system to obtain coloring polyester melt; and (3) spinning and stretching the obtained coloring polyester melt, and obtaining the stock solution coloring polymeter fiber. The coloring agent is uniformly scattered in a polyester component, so that the compatibility problem of the polyester component and the coloring agent carrier can be effectively solved, the influence of the coloring agent and a carrier thereof on the spinning performance of the coloring polyester melt can be eliminated, and the prepared stock solution coloring polyester fiber is high in content of coloring agent, stable in quality, free from color difference, soft in hand touching, and goodin mechanical performance.

Description

technical field [0001] The invention belongs to the technical field of textiles, and in particular relates to a dope-dyed polyester fiber and a preparation method thereof. Background technique [0002] Polyester fiber has the advantages of high breaking strength, stable shape, good crispness, anti-wrinkle and non-ironing, easy to wash and dry, and is an ideal textile fiber. These excellent physical and mechanical properties of polyester fiber depend on its highly stereoregular macromolecular chain structure and condensed structure with high crystallinity and orientation, but these structural properties also bring the problem of difficult dyeing to polyester fiber . At present, polyester fiber dyeing mainly adopts high-temperature and high-pressure dyeing process with disperse dyes. This process has outstanding problems such as high equipment requirements, high investment, and difficult disposal of three wastes. Therefore, adopting energy-saving and environment-friendly col...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/04C08G63/183C08G63/78
CPCC08G63/183C08G63/78D01F1/04D01F6/92
Inventor 邱志成李鑫金剑廉志军
Owner CHINESE TEXTILE ACAD
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