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Preparation method of moisture-absorbing and sweat-releasing ECDP fiber

A moisture-absorbing and sweat-wicking fiber technology, which is applied in the fields of spinning and polyester polymerization, can solve problems such as damage to segmental regularity and crystallinity, no research on fiber moisture-wicking and sweat-wicking capabilities, and affect production safety, etc., to improve flow Denaturation and spinnability, avoiding self-aggregation problems, and improving moisture absorption and perspiration performance

Active Publication Date: 2020-06-19
ZHEJIANG HENGYI PETROCHEMICAL RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are the following problems: (1) a large amount of flammable and explosive liquid—methanol will be produced in the process of SIPM pretreatment, which will affect the safety of production; (2) there is no research on the improvement of fiber moisture absorption and perspiration ability; (3) through The introduction of PEG to destroy the regularity and crystallinity of the chain segment, so that the dye can enter the interior of the fiber molecular chain, will lead to a decrease in fiber strength

Method used

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  • Preparation method of moisture-absorbing and sweat-releasing ECDP fiber

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[0049] A preparation method for moisture absorption and perspiration ECDP fibers, comprising the following steps:

[0050] (1) The first esterification: mix terephthalic acid, ethylene glycol, catalysts and additives, beat and stir evenly, and transfer the obtained slurry to the first esterification tank for the first esterification. React at ~60kPa, control the esterification rate to over 80%; Among them, the catalyst is at least one of antimony trioxide, antimony acetate, and antimony glycol, and the auxiliary agent is trimethyl phosphate, triethyl phosphate, phosphoric acid At least one of tripropyl ester and triphenyl phosphate; the molar ratio of terephthalic acid, ethylene glycol, catalyst and additive is 1:1.1~1.5:0.0002~0.0004:0.00005~0.0001;

[0051] (2) Pre-esterification of isophthalic acid-5-sulfonate: add isophthalic acid-5-sulfonate and ethylene glycol into the pre-esterification kettle, react at 120-180°C for 2-5 hours, The end point of the reaction is when the...

Embodiment 1

[0062] A preparation method for moisture absorption and perspiration ECDP fibers, comprising the following steps:

[0063] (1) The first esterification: mix terephthalic acid, ethylene glycol, ethylene glycol antimony and triethyl phosphate, make a beating and stir evenly, and the resulting slurry is transported to the first esterification kettle for the first esterification. ℃, 60kPa reaction, control the esterification rate of 85% or more; wherein, the molar ratio of terephthalic acid, ethylene glycol, ethylene glycol antimony, and trimethyl phosphate is 1:1.1:0.0003:0.0001;

[0064] (2) Pre-esterification of isophthalic acid-5-sodium sulfonate: add isophthalic acid-5-sodium sulfonate and ethylene glycol into the pre-esterification kettle, react at 180°C for 3 hours, and wait for the amount of water received When the theoretical value is reached, it is the end of the reaction, and the reaction temperature in the whole reaction process does not exceed 180°C; wherein, the mola...

Embodiment 2

[0071] A preparation method for moisture absorption and perspiration ECDP fibers, comprising the following steps:

[0072] (1) The first esterification: mix terephthalic acid, ethylene glycol, ethylene glycol antimony and triethyl phosphate, make a beating and stir evenly, and the resulting slurry is transported to the first esterification kettle for the first esterification. ℃, 60kPa reaction, control the esterification rate of 85% or more; wherein, the molar ratio of terephthalic acid, ethylene glycol, ethylene glycol antimony, and trimethyl phosphate is 1:1.1:0.0003:0.0001;

[0073] (2) Pre-esterification of isophthalic acid-5-sodium sulfonate: add isophthalic acid-5-sodium sulfonate and ethylene glycol into the pre-esterification kettle, react at 180°C for 3 hours, and wait for the amount of water received When the theoretical value is reached, it is the end of the reaction, and the reaction temperature in the whole reaction process does not exceed 180 ° C; wherein, the mo...

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Abstract

The invention relates to the field of polyester polymerization and spinning, and discloses a preparation method of moisture-absorbing and sweat-releasing ECDP fiber. The preparation method comprises the following steps of performing first esterification on terephthalic acid, ethylene glycol, a catalyst and an auxiliary agent which are used as raw materials; performing pre-esterification on m-phthalic acid-5-sulfonate and ethylene glycol which are used as raw materials; performing second esterification on a first esterification product, an m-phthalic acid-5-sulfonate pre-esterification product,2-methyl-1,3-propylene glycol and a compound anti-ether agent which are used as raw materials; performing pre-polycondensation on a second esterification product and polyethylene glycol which are used as raw materials; performing final polycondensation on a pre-polycondensation product which is used as a raw material; performing cooling and granulating on a final polycondensation product to obtain slices; and drying, spinning and elasticizing the slices to obtain a finished product of the moisture-absorbing and sweat-releasing ECDP fiber. The preparation method disclosed by the invention caneffectively improve the dyeing property and the moisture-absorbing and sweat-releasing property of polyester fiber, ensures the strength of the polyester fiber, and is stable and safe in production.

Description

technical field [0001] The invention relates to the fields of polyester polymerization and spinning, in particular to a method for preparing moisture-absorbing and sweat-wicking ECDP fibers. Background technique [0002] Polyester fiber is a synthetic fiber obtained by spinning polyester obtained by polycondensation of organic dibasic acid and dibasic alcohol, referred to as PET fiber, commonly known as polyester. Conventional polyester fibers, due to the regularity of molecular segments, good crystallization properties, high strength, high modulus, good elasticity and wear resistance, and dimensional stability, are widely used in civil and industrial fields. However, polyester fiber lacks functional groups that can combine with direct dyes, acid dyes, basic dyes, etc. Although it has ester groups that can form hydrogen bonds with disperse dyes, the high crystallinity and compact structure lead to dye molecules under high temperature and high pressure conditions. In order t...

Claims

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Application Information

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IPC IPC(8): D01F8/14D01F8/06D01F1/10C08G63/688C08G63/78D01D5/253
CPCD01F8/14D01F8/06D01F1/10C08G63/6886C08G63/78D01D5/253
Inventor 董海良王晶晶刘园园胡超贾振宇王文徐锦龙
Owner ZHEJIANG HENGYI PETROCHEMICAL RES INST CO LTD
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