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One-step-process hydrophilic dacron/high-shrinkage dacron combined yarn and preparation method thereof

A high-shrinkage, hydrophilic technology, applied in the direction of melt spinning, artificial filament heat treatment, conjugated synthetic polymer rayon, etc., to achieve the effect of fluffy appearance, bright color and good hydrophilicity

Inactive Publication Date: 2013-03-13
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide one-step hydrophilic polyester / high-shrinkage polyester blended yarn and its preparation method to solve the problems of polyester hydrophilicity, dyeing, antistatic, bulkiness and softness of fabrics, etc. , so as to achieve the purpose of replacing cotton fiber and wool fiber

Method used

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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  • One-step-process hydrophilic dacron/high-shrinkage dacron combined yarn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Raw materials: The content of each component in the hydrophilic copolyester chip is as follows:

[0028] PTA:EG:SIPE:X1:X2 molar ratio is 1:1.1:0.015:0.005:0.000166

[0029] The content of each component in the high shrinkage copolyester chip is as follows:

[0030] PTA:EG:IPA molar ratio is 1:1.1:0.01

[0031] The melting point of hydrophilic copolyester chips is 228.1°C, and the intrinsic viscosity [η] is 0.751dL / g.

[0032] The high-shrinkage copolyester chip has a melting point of 221.4°C and an intrinsic viscosity [η] of 0.85dL / g.

[0033]Preparation method of hydrophilic copolyester chips: using continuous polymerization equipment, continuously and accurately weigh PTA, EG, and X1 with a molar ratio of 0.5% to PTA, respectively, and add them to the beating kettle for beating. The molar ratio is 1:1.1; the above slurry is continuously and uniformly transported to the first esterification tank, the reaction temperature of the first esterification tank is 240°C, a...

Embodiment 2

[0037] Raw materials: The content of each component in the hydrophilic copolyester chip is as follows:

[0038] PTA:EG:SIPE:X1:X2 molar ratio is 1:1.1:0.03:0.02:0.006

[0039] The content of each component in the high shrinkage copolyester chip is as follows:

[0040] PTA:EG:IPA molar ratio is 1:1.1:0.15

[0041] The melting point of hydrophilic copolyester chips is 240.1°C, and the intrinsic viscosity [η] is 0.606dL / g.

[0042] The high-shrinkage copolyester chip has a melting point of 218.4°C and an intrinsic viscosity [η] of 0.622dL / g.

[0043] Preparation method of hydrophilic copolyester chips: using continuous polymerization equipment, continuously and accurately weigh PTA, EG, and X1 with a molar ratio of 2% to PTA, respectively, and add them to the beating kettle for beating. The molar ratio is 1:1.1; the above slurry is continuously and uniformly transported to the first esterification tank, the reaction temperature of the first esterification tank is 240°C, and th...

Embodiment 3

[0047] Raw materials: The content of each component in the hydrophilic copolyester chip is as follows:

[0048] PTA:EG:SIPE:X1:X2 molar ratio is 1:1.1:0.06:0.08:0.01245

[0049] The content of each component in the high shrinkage copolyester chip is as follows:

[0050] PTA:EG:IPA molar ratio is 1:2.5:0.2

[0051] The melting point of hydrophilic copolyester chips is 242.2°C, and the intrinsic viscosity [η] is 0.615dL / g.

[0052] The high-shrinkage copolyester chip has a melting point of 210.4°C and an intrinsic viscosity [η] of 0.502dL / g.

[0053] Preparation method of hydrophilic copolyester chips: using continuous polymerization equipment, continuously and accurately weigh PTA, EG, and X1 with a molar ratio of 8% to PTA, respectively, and add them to the beating kettle for beating. The molar ratio is 1:1.1; the above slurry is continuously and uniformly transported to the first esterification tank, the reaction temperature of the first esterification tank is 240°C, and t...

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Abstract

The invention discloses a one-step-process hydrophilic dacron / high-shrinkage dacron combined yarn and a preparation method thereof. The combined yarn is prepared from hydrophilic copolyester chips and high-shrinkage copolyester chips by using one-step-process spinning, wherein the hydrophilic copolyester chips comprise purified terephthalic acid, ethylene glycol, m-phenylene dihydric alcohol binary acid ester-5-sodium sulfonate, polydihydric alcohol and other dihydric alcohols, and the high-shrinkage copolyester chips comprise purified terephthalic acid, ethylene glycol and isophthalic acid. The combined yarn obtained according to the preparation method has the fiber moisture regain being 1.0-3.0% and the differential shrinkage rate being 10-60%, is improved in softness, hydrophily and dyeing property, and can be used in cotton-like and wool-like fabric.

Description

technical field [0001] The invention relates to a one-step hydrophilic polyester / high-shrinkage polyester blended yarn and a preparation method thereof. Background technique [0002] Polyester has the advantages of high strength, high modulus, wear resistance, stable size, and stable chemical properties, and is widely used in various fields such as clothing, decoration, and industry. However, due to the linear macromolecular structure of polyester and the lack of hydrophilic groups, the hydrophilicity, dyeability and softness of polyester are relatively poor. With the improvement of living standards, people pay more and more attention to the comfort performance of clothing, such as: hand feeling, moisture absorption and breathability, etc., and they are more inclined to choose natural fiber products. Cotton has excellent hydrophilic properties, but the supply of cotton fiber in my country is seriously insufficient, which cannot meet the needs of people's clothing and other ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14C08G63/688C08G63/183D01D5/08D01D10/02
Inventor 樊娟王学利俞建勇李发学赵明良
Owner DONGHUA UNIV
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