A Method for Reducing Hairiness of Polyester Yarn

A yarn and polyester technology, applied in the field of fiber preparation, can solve the problems of reducing the hairiness content of polyester yarn and high hairiness content of polyester yarn

Active Publication Date: 2020-07-07
JIANGSU HENGLI CHEM FIBER
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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 provide a method that can significantly reduce the content

Method used

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  • A Method for Reducing Hairiness of Polyester Yarn
  • A Method for Reducing Hairiness of Polyester Yarn
  • A Method for Reducing Hairiness of Polyester Yarn

Examples

Experimental program
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Example Embodiment

[0054] Example 1

[0055] A method for reducing hairiness of polyester yarn, the steps are as follows:

[0056] (1) Preparation of modified polyester;

[0057] (a) Esterification reaction; mix terephthalic acid, ethylene glycol and 2-ethyl-2-methyl-1,3-propanediol in a molar ratio of 1:1.2:0.03 into a slurry, and add antimony trioxide , Titanium dioxide and triphenyl phosphate are mixed uniformly, pressurized in a nitrogen atmosphere to carry out the esterification reaction, the pressure is normal pressure, the temperature of the esterification reaction is 250 ℃, when the amount of water distilled in the esterification reaction reaches the theoretical 90% of the value is the end point of the esterification reaction, where the addition of antimony trioxide is 0.01% by weight of terephthalic acid, the addition of titanium dioxide is 0.20% by weight of terephthalic acid, and the addition of triphenyl phosphate It is 0.05% by weight of terephthalic acid. The structural formula of 2-eth...

Example Embodiment

[0063] Example 2

[0064] A method for reducing hairiness of polyester yarn, the steps are as follows:

[0065] (1) Preparation of modified polyester;

[0066] (a) Esterification reaction; mix terephthalic acid, ethylene glycol and 2,2-diethyl-1,3-propanediol with a molar ratio of 1:1.3:0.04 into a slurry, and add ethylene glycol antimony and titanium dioxide After mixing with trimethyl phosphate uniformly, the esterification reaction is carried out under pressure in a nitrogen atmosphere. The pressure is normal pressure, and the temperature of the esterification reaction is 260℃. When the amount of water distilled in the esterification reaction reaches the theoretical value 91% is the end point of the esterification reaction, where the addition of ethylene glycol antimony is 0.02% by weight of terephthalic acid, the addition of titanium dioxide is 0.21% by weight of terephthalic acid, and the addition of trimethyl phosphate is about 0.03% by weight of phthalic acid, of which the s...

Example Embodiment

[0072] Example 3

[0073] A method for reducing hairiness of polyester yarn, the steps are as follows:

[0074] (1) Preparation of modified polyester;

[0075] (a) Esterification reaction; mix terephthalic acid, ethylene glycol and 2-butyl-2-ethyl-1,3-propanediol with a molar ratio of 1:1.4:0.05 into a slurry, and add antimony acetate and titanium dioxide After mixing with trimethyl phosphite uniformly, the esterification reaction is carried out under pressure in a nitrogen atmosphere. The pressure is 0.1MPa and the temperature of the esterification reaction is 252°C. When the amount of water distilled in the esterification reaction reaches the theoretical value 92% is the end point of the esterification reaction. The addition of antimony acetate is 0.03% by weight of terephthalic acid, the addition of titanium dioxide is 0.23% by weight of terephthalic acid, and the addition of trimethyl phosphite is for 0.01% by weight of phthalic acid, of which the structural formula of 2-butyl-...

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Abstract

The invention relates to a method for reducing polyester yarn hairness. According to the method, modified polyester is adopted, and polyester yarns are prepared by polyester fiber of an oil agent withthe crown ether content being 67.3 to 85.58 percent by weight used in the oiling link in the spinning process, wherein the molecular chain of the modified polyester comprises a terephthalic acid chain segment, a glycol chain segment and a diol chain segment with branched chains; the structure of the diol chain segment with the branched chains is as follows: (the formula is shown as the description); and in the formula, R1 and R2 are independently selected from straight chain alkylene with the carbon atom number being 2 to 5, R3 is selected from alkyl with the carbon atom number being 1 to 5,and R 4 is selected from alkyl with the carbon atom number being 2 to 5. The method for reducing the polyester yarn hairness, which is provided by the invention, is simple and reasonable, the number of the prepared polyester yarn hairness is 1.8 to 2.1 pieces/10 km, the number of the prepared polyester yarn hairness is obviously reduced, the advantages of high uniformity, little hairness and highquality are achieved and great application prospect is achieved.

Description

Technical field [0001] The invention belongs to the field of fiber preparation and relates to a method for reducing hairiness of polyester yarns. Background technique [0002] Since the advent of polyethylene terephthalate (PET) fiber, it has developed rapidly because of its excellent properties, and its output has become the world's top synthetic fiber. Polyester fiber has a series of excellent properties such as high breaking strength, high elastic modulus, moderate resilience, excellent heat setting performance, good heat and light resistance, acid and alkali resistance, and corrosion resistance, and the fabric prepared from it has wrinkle resistance It is widely used in the fields of fiber, bottle packaging, film and sheet material, and its output is increasing year by year, and its status in the industry has been significantly improved. [0003] However, in the process of the polycondensation reaction of synthesizing ethylene terephthalate, especially in the production of lin...

Claims

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Application Information

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IPC IPC(8): D06M13/11D06M13/02D06M13/224D06M13/256D06M13/292D06M15/53C08G63/183C08G63/86D06M101/32
CPCC08G63/183C08G63/866D06M13/02D06M13/11D06M13/224D06M13/256D06M13/292D06M15/53D06M2101/32
Inventor 王丽丽代居宴王力军陈瑞王锋宾
Owner JIANGSU HENGLI CHEM FIBER
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