Preparation method of high-hydrophilicity flame-retardant polyester fiber

A flame retardant polyester, high hydrophilic technology, applied in the direction of one-component copolyester rayon, melt spinning, stretch spinning, etc., to achieve the effect of small addition, reduced residence time, and simple process

Active Publication Date: 2014-03-12
DONGHUA UNIV
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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 high-hydrophilicity flame-retardant polyester fiber
  • Preparation method of high-hydrophilicity flame-retardant polyester fiber
  • Preparation method of high-hydrophilicity flame-retardant polyester fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046]

[0047] Mix the copolymerized flame retardant CEPPA and ethylene glycol at a molar ratio of 1:1.2, and react at 100°C for 1 hour to obtain the reaction product CEPPA-EG. Mix tetraethoxysilane (TEOS) and ethylene glycol at a molar ratio of 1:4, and react under the action of catalyst HCl to obtain tetrakis (2-hydroxyethyl) orthosilicic acid solution. Mix terephthalic acid and ethylene glycol slurry at a molar ratio of 1:1.05 to prepare slurry. The prepared slurry was mixed with the catalyst tetrabutyl titanate and then put into an esterification reactor for the first esterification reaction. The temperature of the first esterification reaction was 225° C., the reaction time was 4 hours, and the relative pressure of the reaction was 0 MPa. When the esterification reaction reaches 82%, add sorbitol and polyethylene glycol (PEG-200) to carry out the second esterification reaction, the second esterification reaction temperature is 240°C, and the esterification reaction ti...

Embodiment 2

[0049]

[0050] Mix the copolymerized flame retardant CEPPA and ethylene glycol at a molar ratio of 1:1.8, and react at 100°C for 1 hour to obtain the reaction product CEPPA-EG. Hydroxyl-terminated silicone oil and ethylene glycol are mixed in a molar ratio of 1:4.4, and the catalyst SiCl 4 Under the action of the reaction, the hydroxyl-terminated silicone oil-EG solution is obtained. Mix terephthalic acid and ethylene glycol slurry at a molar ratio of 1:2.0 to prepare slurry. Mix the prepared slurry with ethylene glycol antimony, antioxidant 1010 and trimethyl phosphate, and then add it to the esterification reactor for the first esterification reaction. The temperature of the first esterification reaction is 250°C, and the reaction time is 0.5h , the relative pressure of the reaction is 0.4MPa. When the esterification reaction reaches 95%, 1,2-propanediol and polyethylene glycol (PEG-400) are added to carry out the second esterification reaction. The temperature of the ...

Embodiment 3

[0052]

[0053] Mix the copolymerized flame retardant CEPPA and 1,2 propylene glycol at a molar ratio of 1:2.0, and react at 100°C for 1 hour to obtain the reaction product CEPPA-1,2 propylene glycol. Tetraethoxysilane (TEOS) was mixed with ethylene glycol in a molar ratio of 1:4.6, and the catalyst Al(OC 2 h 5 ) 3 Under the influence of reaction, tetrakis (2-hydroxyethyl) ortho silicic acid solution is obtained. Mix terephthalic acid and ethylene glycol slurry in a ratio of 1:1.6 to prepare slurry. Mix the prepared slurry with the mixture of antimony trioxide and titanium dioxide, antioxidant 168 and alkyl phosphoric acid diester, and then put it into the esterification reactor for the first esterification reaction. The temperature of the first esterification reaction is 240 ° C. The reaction The time is 3h, and the relative pressure of the reaction is 0.3MPa. When the esterification reaction reaches 92%, 1,3-butanediol and polyethylene glycol (PEG-600) are added to ca...

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Abstract

The invention relates to a preparation method of high-hydrophilicity flame-retardant polyester fiber, which comprises the steps of (1) enabling a copolymer flame retardant to react with polyalcohol to obtain CEPPA (carboxethyl phenylphosphinic acid)-polyalcohol; (2) enabling hydroxyl-terminated siloxane to react with ethylene glycol in the presence of a catalyst to obtain a hydroxyl-terminated siloxane-ethylene glycol solution; (3) preparing slurry, and adding the prepared slurry into an esterification reaction kettle to perform a first esterification reaction; (4) when the quantity of the collected byproducts reaches 82-95% of the theoretical value, adding polyalcohol, sodium sulfo bis(hydroxyethyl) isophthalate (SIPE) and polyethylene glycol (PEG) to perform a second esterification reaction; (5) after the esterification reaction, adding the products obtained by the steps (1) and (2) into a reaction kettle, and after the condensation polymerization reaction, performing melt spinning to obtain the high-hydrophilicity flame-retardant polyester fiber. The limit oxygen index of the polyester fiber prepared by the method provided by the invention is over 30%, the moisture regain is 0.6-2.0%, and the fiber has relatively high moisture regain and is comfortable to wear.

Description

technical field [0001] The invention belongs to the field of preparation of flame-retardant fibers, in particular to a preparation method of highly hydrophilic flame-retardant polyester fibers. Background technique [0002] Since polyester and polyester fiber entered large-scale industrialization in the 1970s, the development speed is much faster than other synthetic materials and synthetic fibers. In 2011, the output of polyester fiber in my country was 27.95 million tons, accounting for about 83% 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 still 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, wear resistance, resilience and dimensional stability are good, and can meet the needs of various...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/84C08G63/695C08G63/86C08G63/85D01D5/08D01D5/12D01D5/16D01D10/02
Inventor 王朝生方孝芬王华平李建武陈向玲
Owner DONGHUA UNIV
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