Hydrophilic polyester fiber and preparation method thereof

A cotton polyester fiber, hydrophilic technology, applied in the field of polyester fiber and its preparation, can solve the problems of adverse effects of polyester melt spinning processing, unreasonable product structure, fierce homogeneity competition, etc., to improve moisture conductivity performance, good antistatic properties, the effect of improving the effect of cotton imitation

Active Publication Date: 2014-04-23
LI NING CHINA SPORTS GOODS
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] Although my country's polyester production capacity and output rank first in the world, my country's polyester fiber industry still faces some outstanding problems that need to be solved urgently: unreasonable product structure, fierce homogenization competition, and low profit margins in the industry
However, such plasticizers have serious adverse effects on polyester melt spinning processing

Method used

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  • Hydrophilic polyester fiber and preparation method thereof

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Effect test

preparation example Construction

[0045] The invention provides a kind of preparation method of hydrophilic cotton imitation polyester fiber, comprises the steps:

[0046] (1) The preparation process of modified polyvinyl alcohol: dissolving polyvinyl alcohol in calcium chloride aqueous solution, then precipitating with alcohol, drying the separated precipitate, and preparing the chelated polyvinyl alcohol and calcium chloride matter; preferably, the chelate formed by the polyvinyl alcohol and calcium chloride has high temperature resistance; the degree of polymerization of the polyvinyl alcohol is 1000-4000;

[0047] In the process of preparing modified polyvinyl alcohol, other alcohols can be used for precipitation, such as methanol and ethylene glycol, and the precipitation efficiency of methanol is higher than that of other alcohol precipitants.

[0048] The mass fraction of the polyvinyl alcohol added in the calcium chloride aqueous solution is 5wt%-20wt%, and the added mass fraction is controlled within ...

Embodiment 1

[0086] A kind of preparation method of highly comfortable hydrophilic cotton-like polyester fiber, its specific steps are:

[0087] Mix polyester chips, high-temperature-resistant modified polyvinyl alcohol and polyester cooling masterbatch to obtain 1kg of the mixture, dry the mixture at 105°C for 20h, and melt-spin through a hollow special-shaped spinneret at 240°C to prepare raw polyester Silk, after winding, doffing, balanced clustering, moisture conduction, pre-stretching and oiling, stretching once or twice, and finally tension heat setting, crimping, relaxation heat setting, cutting, packaging, and finally prepared Cotton-like polyester staple fiber, which is a short fiber with a specification of 1.5D×38mm, is used to measure the fiber breaking strength, elongation at break, volume specific resistance, moisture regain, water absorption, and evaporation rate of the fiber sample. The results are shown in Table 1;

[0088] Its raw material mass percentage is:

[0089] Hi...

Embodiment 2

[0098] Preparation

[0099] A kind of preparation method of highly comfortable hydrophilic cotton-like polyester fiber, its specific steps are:

[0100] Mix polyester chips, high-temperature-resistant modified polyvinyl alcohol and cooling masterbatch to obtain 1kg of the mixture, dry it at 125°C for 10h, and prepare POY and FDY fiber, then compound the prepared POY fiber with FDY, and use the shrinkage difference of the two fibers to prepare the mixed fiber to obtain the mixed fiber formed by POY and FDY. The prepared mixed fiber has more characteristics of cotton. The sample was tested for fiber breaking strength, elongation at break, volume specific resistance, moisture regain, water absorption, and evaporation rate of the fiber. The results of the measurement are shown in Table 1.

[0101] Its raw material mass percentage is:

[0102] High temperature resistant modified polyvinyl alcohol: 5%

[0103] Polyester cooling masterbatch: 10%

[0104] Polyester chips: 85%

[...

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Abstract

The invention discloses a preparation method of a hydrophilic cotton-like polyester fiber. The preparation method is characterized by comprising the following steps: (1) dissolving chelate formed in a calcium chloride water solution by virtue of polyvinyl alcohol; (2) carrying out mixing granulation on polyester chips, a molecular weight modifier, an antioxidant and a lubricant so as to obtain cooled master batches; (3) carrying out blending and melt spinning on the obtained modified polyvinyl alcohol, the cooled master batches and polyester chips, and carrying out final processing to prepare the cotton-like polyester fiber. The invention further provides the hydrophilic cotton-like polyester fiber prepared by the preparation method. The fiber comprises 0.1wt%-5wt% of the modified polyvinyl alcohol, 0.005wt%-0.05wt% of the molecular weight modifier, 0.002wt%-0.02wt% of the antioxidant and 0.002wt%-0.02wt% of the lubricant; the fiber has the coefficients that the moisture regain is more than or equal to 2.0%, the water absorption rate is more than or equal to 250%, the evaporation rate is more than or equal to 0.18g / hr, the breaking strength is more than or equal to 2.5cN / dtex, the elongation at break is more than or equal to 20%, and the volume resistivity is less than or equal to 108 omega.cm. The cotton-like polyester fiber disclosed by the invention has the advantages that the moisture absorption performance is good, and the comfort level is greatly improved.

Description

technical field [0001] The invention relates to a polyester fiber and a preparation method thereof, in particular to a hydrophilic cotton-like polyester fiber and a preparation method thereof Background technique [0002] my country is a big country producing polyester fiber. In 2011, my country's polyester fiber output was 27.95 million tons, accounting for 83% of my country's chemical fiber output and 70% of the world's polyester fiber output. [0003] Although my country's polyester production capacity and output ranks first in the world, my country's polyester fiber industry still faces some outstanding problems that need to be solved urgently: irrational product structure, fierce homogenization competition, and low profit margins in the industry. In this case, the development and production of high value-added polyester products, saving energy consumption and reducing costs will be the theme of the future development of the polyester industry. At the same time, with th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01F8/10D01F1/10D01D4/02D01D5/098D01D5/096D01D5/08
Inventor 吴安福邵传芳戴筱红
Owner LI NING CHINA SPORTS GOODS
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