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Square hollow polyester fiber FDY (Fully Drawn Yarn) and preparation method thereof

A polyester fiber and hollow technology, which is applied in the field of polyester spinning, can solve the problems of weakening the extrusion swelling effect, reducing surface tension, and poor shape retention effect of special-shaped fibers.

Active Publication Date: 2017-06-13
JIANGSU HENGKE ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the poor shape retention effect of the prior art for preparing special-shaped fibers, and provide a square hollow polyester fiber FDY filament and its preparation method. The present invention introduces a small amount of rigid structural segments into polyester molecules Increase the rigidity of the polyester molecular chain, on the one hand, because the content of rigid structural segments is less, it can maintain the excellent characteristics of the polyester body; on the other hand, the increase in the rigidity of the polyester molecular chain can weaken the extrusion swelling effect and reduce the surface Tension, and then prepare square hollow polyester fiber FDY yarn with better shape retention effect

Method used

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  • Square hollow polyester fiber FDY (Fully Drawn Yarn) and preparation method thereof
  • Square hollow polyester fiber FDY (Fully Drawn Yarn) and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A kind of preparation method of square hollow polyester fiber FDY silk, at first prepare spinning melt, the steps are as follows:

[0052] (1) esterification makes dibasic acid glycol ester;

[0053] Prepare terephthalic acid, ethylene glycol and 2,6-naphthalene dicarboxylic acid into a slurry, the molar ratio of terephthalic acid, ethylene glycol and 2,6-naphthalene dicarboxylic acid is 1:1.2:0.02, add di After antimony, triphenyl phosphate and aluminum stearate are mixed evenly, carry out esterification reaction, the addition amount of antimony trioxide is 0.01% of the weight of terephthalic acid, and the addition amount of triphenyl phosphate is 0.01% of the weight of terephthalic acid. %, the esterification reaction is a pressurized reaction in a nitrogen atmosphere, the pressurized pressure is 0.1MPa, the temperature of the esterification reaction is 250 ° C, when the amount of water distilled in the esterification reaction reaches 90% of the theoretical value, it ...

Embodiment 2

[0069] A kind of preparation method of square hollow polyester fiber FDY silk, at first prepare spinning melt, the steps are as follows:

[0070] (1) esterification makes dibasic acid glycol ester;

[0071] Make a slurry of terephthalic acid, ethylene glycol and 4,4-biphenyl dicarboxylic acid, the molar ratio of terephthalic acid, ethylene glycol and 4,4-biphenyl dicarboxylic acid is 1:1.8:0.046, add acetic acid After antimony, trimethyl phosphite and zinc stearate are mixed evenly, carry out esterification reaction, the addition of antimony acetate is 0.045% of the weight of terephthalic acid, the addition of trimethyl phosphite is 0.045% of the weight of terephthalic acid %, the esterification reaction is a pressurized reaction in a nitrogen atmosphere, the pressurized pressure is 0.24MPa, the temperature of the esterification reaction is 258 ° C, when the amount of water distilled in the esterification reaction reaches 93% of the theoretical value, it is an esterification r...

Embodiment 3

[0091] A kind of preparation method of square hollow polyester fiber FDY silk, at first prepare spinning melt, the steps are as follows:

[0092] (1) esterification makes dibasic acid glycol ester;

[0093] The diterephthalate of terephthalic acid, ethylene glycol and bisphenol A is made into slurry, and the mol ratio of the diterephthalate of terephthalic acid, ethylene glycol and bisphenol A is 1: 1.3:0.025, add antimony trioxide, triphenyl phosphate and aluminum stearate and mix evenly, then carry out esterification reaction, the amount of antimony trioxide added is 0.015% of the weight of terephthalic acid, the amount of triphenyl phosphate added It is 0.015% of the weight of terephthalic acid. The esterification reaction is pressurized in a nitrogen atmosphere. The pressurized pressure is 0.12 MPa, and the temperature of the esterification reaction is 251 ° C. When the amount of water distilled in the esterification reaction reaches the theoretical value 90% of the time ...

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Abstract

The invention belongs to the field of polyester spinning, and relates to a square hollow polyester fiber FDY (Fully Drawn Yarn) and a preparation method thereof. A spinning melt contains a saturated fatty acid metal salt and modified polyester; the mass ratio of the saturated fatty acid metal salt to the modified polyester is (0.0005-0.002):1; the saturated fatty acid metal salt is a fatty acid metal salt of which the carbon atom number is 12-22, the melting point is 100-180 DEG C and the power viscosity is less than or equal to 1Pa*s; the molecular chain of the modified polyester comprises a terephthalic acid chain segment, a glycol chain segment and a rigid structure chain segment; the mole ratio of the rigid structure chain segment to the terephthalic acid chain segment is (0.02-0.05):1; the die swell ratio of the spinning melt is 1.21-1.32; the after-filtration pressure of the spinning melt in spinning is 82-123kg / cm<2>. The square hollow polyester fiber FDY provided by the invention is relatively high in hollowness degree and relatively good in conformal effect.

Description

technical field [0001] The invention belongs to the field of polyester spinning, and relates to a square hollow polyester fiber FDY filament and a preparation method thereof. Background technique [0002] Since its inception, polyethylene terephthalate (PET fiber or polyester fiber) fiber has high breaking strength and elastic modulus, moderate resilience, excellent heat setting, good heat resistance and light resistance, acid resistance, alkali resistance and corrosion resistance. It has a series of excellent performances, such as anti-wrinkle and non-ironing, and good crispness. It is widely used in clothing, home textiles and other fields. [0003] Home textiles are one of the three final product areas of the textile industry. With the improvement of people's quality of life, comfort, functionality, and environmental protection have increasingly become consumers' new requirements for home textiles. The polyester filament products used in home textile production in the ma...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/10C08G63/183C08G63/189C08G63/185C08G63/199D01D5/24D01D5/253
Inventor 韦开顺李文刚张爱民刘彪
Owner JIANGSU HENGKE ADVANCED MATERIALS CO LTD
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