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Preparation method of antistatic hydrophilic polyester fiber

A polyester fiber, antistatic technology, applied in the field of preparation of antistatic hydrophilic polyester fiber, to achieve the effect of lowering the melting point, avoiding degradation, and good softness

Active Publication Date: 2014-07-23
中国化学纤维工业协会
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the use of sorbitol to prepare polyester for micro-modification.

Method used

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  • Preparation method of antistatic hydrophilic polyester fiber
  • Preparation method of antistatic hydrophilic polyester fiber
  • Preparation method of antistatic hydrophilic polyester fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) The hydrophilic polyester chips are produced by a continuous polymerization process, and the formula is as follows:

[0040]

[0041] The terephthalic acid and ethylene glycol are mixed in proportion to prepare slurry. The prepared slurry is mixed with the catalyst tetrabutyl titanate and then added to the esterification reactor for the first esterification reaction. The first esterification reaction temperature is 225° C., the reaction time is 4 hours, and the relative pressure of the reaction is 0 MPa. The by-product water is separated and collected by a fractionation tower. The collected amount is measured by a graduated cylinder. The theoretical value is calculated according to the reaction formula. When the collected amount of water reaches 82% of the theoretical value, sorbitol and polyethylene glycol (PEG-2000) are added. ) Carry out the second esterification reaction, the second esterification reaction temperature is 240° C., the pressure is normal pressure, an...

Embodiment 2

[0047] (1) The hydrophilic polyester chips are produced by a continuous polymerization process, and the formula is as follows:

[0048]

[0049] First, ethylene glycol and titanium dioxide are mixed in proportion to be beaten, and then mixed with terephthalic acid in proportion to prepare slurry. The prepared slurry is mixed with ethylene glycol antimony, antioxidant 1010 and trimethyl phosphate in proportions and then added to the esterification reactor for the first esterification reaction. The first esterification reaction temperature is 250°C, and the reaction time is For 0.5h, the relative pressure of the reaction is 0.4MPa. The by-product water is separated and collected by a fractionation tower. The collected amount is measured with a graduated cylinder. The theoretical value is calculated according to the reaction formula. When the collected amount of water reaches 95% of the theoretical value, sorbitol and polyethylene glycol (PEG-4000 ) Carry out the second esterificat...

Embodiment 3

[0053] (1) The hydrophilic polyester chips are produced by a continuous polymerization process, and the formula is as follows:

[0054]

[0055] First, ethylene glycol and titanium dioxide are mixed in proportion to be beaten, and then mixed with terephthalic acid in proportion to prepare slurry. The prepared slurry is mixed with the mixture of antimony trioxide, antioxidant 168, and alkyl phosphoric acid diester in proportion and then added to the esterification reactor for the first esterification reaction. The first esterification reaction temperature is 230°C. The time is 2.5h, and the relative pressure of the reaction is 0.25MPa. The by-product water is separated and collected by a fractionation tower. The collected amount is measured by a graduated cylinder. The theoretical value is calculated according to the reaction formula. When the collected amount of water reaches 85% of the theoretical value, sorbitol and polyethylene glycol (PEG-6000 ) Carry out the second esterifi...

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Abstract

The invention provides a preparation method of an antistatic hydrophilic polyester fiber. The preparation method is characterized in that the specific steps are as follows: step 1, mixing terephthalic acid with ethylene glycol in a molar ratio of 1:1.05 to 2.0 to prepare slurry; adding the prepared slurry into an esterification reactor to perform a first esterification reaction; when the amount of the by-product collection of the first esterification reaction is up to 82-95% of the theoretical value, adding sorbitol and polyethylene glycol to perform a second esterification reaction; after the esterification reaction, performing a polycondensation reaction on the obtained esters to prepare antistatic hydrophilic polyester; and step 2, performing melt spinning on the obtained antistatic hydrophilic polyester to prepare the antistatic hydrophilic polyester fiber. The preparation method provided by the invention has good modification effect and is suitable for the melt direct spinning process.

Description

Technical field [0001] The invention relates to a preparation method of antistatic hydrophilic polyester fiber. Background technique [0002] Since the large-scale industrialization of polyester and polyester fiber in the 1970s, the development speed is much faster than other synthetic materials and synthetic fibers. In 2010, my country's polyester fiber output was 25.13 million tons, accounting for about 81% of my country's chemical fiber output; It accounts for about 70% of the world's polyester fiber production. In the next 10 years, the world's polyester and polyester fiber will maintain a growth rate of more than 3%, and polyester fiber will account for more than 60% of the world's total fiber products. The physical and mechanical properties of polyester fibers such as strength, abrasion resistance, resilience and dimensional stability can better meet the needs of various applications. However, polyester fiber is a typical hydrophobic fiber with a moisture regain rate of on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/84C08G63/672C08G63/85C08G63/86
Inventor 陈向玲王华平王朝生张玉梅吉鹏姜东
Owner 中国化学纤维工业协会
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