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Moisture-absorbing and sweat-releasing special-shaped flame-retardant cationic polyester fiber and preparation method thereof

A cationic polyester, moisture-absorbing and sweat-wicking technology, which is applied in the field of polyester spinning, can solve the problems of restricting the wide application of polyester fibers, fire and other problems, improve flame retardancy and use safety, reduce usage, and improve spinnability sexual effect

Pending Publication Date: 2022-03-01
JIANGSU HENGKE ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, polyester fiber itself is an extrinsic flame-retardant polymer, which produces a large amount of flammable volatile components when it is heated and decomposed, which is easy to burn and cause fire, which limits the wide application of polyester fiber in fields with high flame-retardant grades.

Method used

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  • Moisture-absorbing and sweat-releasing special-shaped flame-retardant cationic polyester fiber and preparation method thereof

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preparation example Construction

[0043] For this reason, the present invention provides a method for preparing moisture-absorbing and sweat-absorbing special-shaped flame-retardant cationic polyester fibers. The flame-retardant cationic polyester is prepared by the POY-DTY process. The flame-retardant cationic polyester includes terephthalic acid segments, ethylene glycol Alcohol segment, isophthalic acid-5-sodium sulfonate segment and 5-bromoisophthalic acid segment.

[0044] Wherein, the 5-bromoisophthalic acid segment is introduced in the preparation of SIPE, and the specific preparation methods include:

[0045]S1. After mixing isophthalic acid-5-sodium sulfonate, 5-bromoisophthalic acid, and ethylene glycol, pressurize in a nitrogen atmosphere to carry out esterification reaction. The pressurized pressure is normal pressure-0.2MPa. The temperature of the reaction is 200-230°C. When the amount of water distilled out in the esterification reaction reaches more than 95% of the theoretical value, it is the e...

Embodiment 1

[0081] Step 1. Put SIPA, 5-bromoisophthalic acid, and ethylene glycol into the esterification kettle, mix them into a slurry, pressurize the esterification reaction in a nitrogen atmosphere, and pressurize at normal pressure -0.2MPa, The temperature of the esterification reaction is 200°C, when the amount of water distilled in the esterification reaction reaches more than 95% of the theoretical value, it is the end point of the esterification reaction, and a solution of SIPE and 5-bromodiethylene glycol isophthalate is obtained product;

[0082] The molar ratio of isophthalic acid-5-sodium sulfonate, 5-bromoisophthalic acid and ethylene glycol is 1:3:6.4.

[0083] Step 2. Put terephthalic acid, ethylene glycol, antimony trioxide, triphenyl phosphate and titanium dioxide into the second esterification kettle and mix them, and perform esterification reaction at a temperature of 220-255°C. The reaction time is 1.5 hours ;

[0084] During the esterification process, the esterifi...

Embodiment 2

[0106] Step 1. Put SIPA, 5-bromoisophthalic acid, and ethylene glycol into the esterification kettle, mix them into a slurry, pressurize the esterification reaction in a nitrogen atmosphere, and pressurize at normal pressure -0.2MPa, The temperature of the esterification reaction is 230°C. When the amount of water distilled out in the esterification reaction reaches more than 95% of the theoretical value, it is the end point of the esterification reaction, and a solution of SIPE and 5-bromodiethylene glycol isophthalate is obtained. product;

[0107] The molar ratio of isophthalic acid-5-sodium sulfonate, 5-bromoisophthalic acid and ethylene glycol is 1:5:10.8.

[0108] Step 2, put terephthalic acid, ethylene glycol, catalyst, stabilizer and matting agent into the second esterification kettle and mix them, and perform esterification reaction at a temperature of 220-255° C., and the reaction time is 2.5 hours;

[0109] During the esterification process, the esterification temp...

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Abstract

The invention relates to a moisture-absorbing and sweat-releasing special-shaped flame-retardant cationic polyester fiber and a preparation method thereof.The moisture-absorbing and sweat-releasing special-shaped flame-retardant cationic polyester fiber is prepared from flame-retardant cationic polyester through a POY-DTY technology, and the flame-retardant cationic polyester comprises a terephthalic acid chain segment, an ethylene glycol chain segment, an isophthalic acid-5-sodium sulfonate chain segment and a 5-bromoisophthalic acid chain segment; bromine on the 5-bromoisophthalic acid and a sodium sulfonate group of the 5-sulfoisophthalic acid are electron withdrawing groups, so that the reaction activity of the 5-bromoisophthalic acid is close to that of the 5-sulfoisophthalic acid and is equivalent to that of ethylene glycol esterification, and the obtained 5-bromoisophthalic acid diethylene glycol ester and SIPE form a copolymer, so that the self-polymerization reaction of the SIPE is reduced, and the polymerization rate of the SIPE is increased. And the dissolving amount of SIPE in ethylene glycol is increased, the usage amount of ethylene glycol is reduced, the spinnability, thermal stability and filtering performance of the flame-retardant cationic polyester are improved, and the service life of a component is prolonged. 5-bromoisophthalic acid is used as an efficient flame-retardant monomer, so that the flame retardance and the use safety of the flame-retardant cationic polyester fiber are improved.

Description

technical field [0001] The invention relates to a moisture-absorbing and perspiration-absorbing special-shaped flame-retardant cationic polyester fiber and a preparation method thereof, belonging to the field of polyester spinning. Background technique [0002] At present, the production capacity of polyester filament in my country is increasing continuously, but due to the rising price of raw materials, the profitability of enterprises is gradually declining. The main reason is that most of the domestic chemical fiber enterprises currently produce conventional varieties, which have low added value, no competitiveness, and poor market sales; There are higher requirements for individuality, diversity and taste. Although polyester chemical fiber fabrics have the advantages of good hand feeling, good drapability and good wrinkle resistance, compared with cotton and linen, their disadvantages are low moisture absorption, no water absorption, and uncomfortable wearing. Function...

Claims

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Application Information

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IPC IPC(8): D01F6/84D01D5/253C08G63/688
CPCD01F6/84D01D5/253C08G63/6886
Inventor 晏金龙林枢珑舒明芳贾冬雷丛茂鹏张艳
Owner JIANGSU HENGKE ADVANCED MATERIALS CO LTD