Preparation method of directly-spun low-pilling polyester wool-type long fiber bundle

A manufacturing method and technology of filament bundles, which are applied in the field of direct spinning low-pilling polyester wool-type filament filament bundles, and can solve problems such as poor spinning processability, high fiber elongation at break, and low break strength. question

Inactive Publication Date: 2015-05-27
JIANGSU JIANGNAN HIGH POLYMER FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the elongation at break of the fibers treated in this way is too high, and the breaking strength is too low, resulting in poor spinning processability, which is not suitable for the needs of clothing textiles.

Method used

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  • Preparation method of directly-spun low-pilling polyester wool-type long fiber bundle
  • Preparation method of directly-spun low-pilling polyester wool-type long fiber bundle
  • Preparation method of directly-spun low-pilling polyester wool-type long fiber bundle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The manufacturing method of the direct spinning low-pilling polyester wool fiber filament bundle comprises the following steps:

[0020] A. Pre-polycondensation and final polycondensation: inject and add TMP prepared in EG to the oligomer pipeline after PET esterification. The addition amount is 0.8%wt of polyester. 22.5%wt;

[0021] B. Spinning: The obtained polyester melt is transported to direct spinning by the booster pump through the melt pipeline through the filter, and the temperature of the heat exchanger on the melt delivery pipeline is adjusted by using the heat exchanger on the melt delivery pipeline. , the temperature of the melt entering the spinning box is 285°C, the spinning temperature is 288°C, the temperature of the quenching air from the inside to the outside is 28°C, the humidity is 70%, and the spinning speed is 1150m / min;

[0022] C. Shaping: The primary fibers after cooling and forming fall into the silk bucket through the drawing and feeding fac...

Embodiment 2

[0025] The manufacturing method of the direct spinning low-pilling polyester wool fiber filament bundle comprises the following steps:

[0026] A. Pre-polycondensation and final polycondensation: inject and add TMP prepared in EG on the oligomer pipeline after PET esterification. The addition amount is 1.3%wt of polyester. 22.5%wt;

[0027] B. Spinning: The obtained polyester melt is transported to direct spinning by the booster pump through the melt pipeline through the filter, and the temperature of the heat exchanger on the melt delivery pipeline is adjusted by using the heat exchanger on the melt delivery pipeline. , the temperature of the melt entering the spinning box is 286°C, the spinning temperature is 289°C, the temperature of the quenching air from the inside to the outside is 23°C, the humidity is 70%, and the spinning speed is 1150m / min;

[0028] C. Shaping: The primary fibers after cooling and forming fall into the silk bucket through the drawing and feeding fac...

Embodiment 3

[0032] The manufacturing method of the direct spinning low-pilling polyester wool fiber filament bundle comprises the following steps:

[0033] A. Pre-polycondensation and final polycondensation: inject and add TMP prepared in EG on the oligomer pipeline after PET esterification, the addition amount is 0.5%wt of polyester, the final polycondensation reaction temperature is controlled to be 288℃, and the preparation concentration is 25.0%wt;

[0034] B. Spinning: The obtained polyester melt is transported to direct spinning by the booster pump through the melt pipeline through the filter, and the temperature of the heat exchanger on the melt delivery pipeline is adjusted by using the heat exchanger on the melt delivery pipeline. , the temperature of the melt entering the spinning box is 280°C, the spinning temperature is 285°C, the temperature of the quenching air from the inside to the outside is 29°C, the humidity is 70%, and the spinning speed is 1150m / min;

[0035] C. Shap...

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Abstract

The invention provides a preparation method of a directly-spun low-pilling polyester wool-type long fiber bundle. The preparation method is characterized by comprising the step of injecting and adding TMP and / or a tetrahydrofurfuryl alcohol-based silicide anti-pilling additive on an esterfied oligomer pipeline of a PET polyester production line, wherein the addition amount of TMP accounts for 0.5-1.3wt% of the amount of PET polyester, the addition amount of the tetrahydrofurfuryl alcohol-based silicide anti-pilling additive accounts for 1.1-3.0wt% of the amount of polyester, and the PET polyester production line is a direct-spinning production line. According to the preparation method, the added TMP can branch polyester, the added tetrahydrofurfuryl alcohol-based silicide substance plays a role in branching or crosslinking in the polyester synthesis process, and the aims that the fiber still has favorable spinning performance under the low-viscosity condition and keeps relatively high stability in the spinning processing process are achieved. The structure of TMP is asymmetric, and TMP plays a role in stopping (inhibiting) crystallizing in macromolecules after copolymerization, so that the modulus of PET and the lateral strength of the fiber are greatly reduced. In addition, a direct drawing technology is adopted, so that the anti-pilling physical property of polyester fiber is enhanced.

Description

technical field [0001] The invention relates to a method for manufacturing a direct spinning low-pilling polyester wool fiber filament bundle, which belongs to the field of synthetic fiber manufacturing. Background technique [0002] Fabrics made of natural and synthetic fibers will have pilling after a long period of use. Pilling refers to the irregular spherical accumulation of fibers on the surface of the fabric. Individual fibers protrude from the yarn. Due to friction while deforming on the surface to form a sphere. This phenomenon is particularly prone to occur in synthetic fibers, especially polyethylene terephthalate (PET) fibers. Due to the high strength of polyester fibers, these spheres cannot fall off, but remain on the surface, resulting in an unsightly appearance . The pilling phenomenon of textiles with a circular cross-section or a denier of more than 2.77dtex is particularly obvious, because polyester fibers have high strength compared to natural fibers, e...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): D01F6/92D01F1/10
Inventor陶国平浦金龙
OwnerJIANGSU JIANGNAN HIGH POLYMER FIBER