Hydrophilic polyester fiber and preparation method thereof

A polyester fiber and hydrophilic technology, applied in the field of textile fibers, can solve problems affecting production stability, dripping, plugging holes, etc., and achieve the effect of smooth spinning process, overcoming yellowing, and excellent hue

Active Publication Date: 2018-06-22
CHINA TEXTILE ACADEMYTIANJINSCI & TECH DEV CO LTD +1
View PDF8 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, condensable gases such as alcohols, esters, and aldehydes produced by the thermal degradation of polyhydroxy flexible polyester will pollute the

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hydrophilic polyester fiber and preparation method thereof
  • Hydrophilic polyester fiber and preparation method thereof
  • Hydrophilic polyester fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0072] Example 1

[0073] (1) Prepare a slurry of terephthalic acid and ethylene glycol in a molar ratio of 1:1.15;

[0074] (2) The slurry prepared in step (1) is continuously added to the esterification system composed of a vertical first esterification tank and a vertical second esterification tank for esterification reaction, and the first esterification tank reaction The temperature is 260°C, the reaction pressure is 500kPa, the reaction temperature of the second esterification tank is 265°C, and the reaction pressure is 120kPa. When the degree of polymerization of the ethylene terephthalate oligomer reaches 5, the ethylene terephthalate Glycol ester oligomer is continuously and stably extracted from the esterification kettle through the oligomer pump;

[0075] (3) The ethylene terephthalate oligomer prepared in step (2) is adjusted to a temperature of 235°C through a heat exchanger, and then combined with polyethylene glycol with a molecular weight of 2000 and dipentaerythrito...

Example Embodiment

[0079] Example 2

[0080] (1) Prepare a slurry with terephthalic acid and ethylene glycol in a molar ratio of 1:1.05;

[0081] (2) The slurry prepared in step (1) is continuously added to the esterification system composed of a vertical first esterification tank and a vertical second esterification tank for esterification reaction, and the first esterification tank reaction The temperature is 275°C, the reaction pressure is 400kPa, the reaction temperature of the second esterification tank is 275°C, and the reaction pressure is 200kPa. When the degree of polymerization of the ethylene terephthalate oligomer reaches 8, the oligomer is passed through The polymer pump is continuously and stably extracted from the esterification kettle;

[0082] (3) The ethylene terephthalate oligomer prepared in step (2) is adjusted to 250°C through a heat exchanger, and then combined with polyethylene glycol with a molecular weight of 8000 and pentaerythritol / tri[2.4 -Di-tert-butylphenyl]phosphite / te...

Example Embodiment

[0086] Example 3

[0087] (1) Prepare a slurry of terephthalic acid and ethylene glycol in a molar ratio of 1:2.0;

[0088] (2) The slurry prepared in step (1) is continuously added to the esterification system composed of a vertical esterification kettle for esterification reaction. The reaction temperature of the esterification kettle is 240°C and the reaction pressure is 100kPa. When the degree of polymerization of ethylene phthalate oligomer reaches 1, the oligomer is continuously and stably extracted from the esterification kettle through the oligomer pump;

[0089] (3) Adjust the temperature of the ethylene terephthalate oligomer prepared in step (2) to 200°C through a heat exchanger, and then combine it with polyethylene glycol with a molecular weight of 200 and glycerol / ethylene glycol added online. Triphenyl phosphate / N,N'-bis-(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl)hexanediamine / cobalt acetate / tetraethyl titanate The alcohol solution is uniformly mixed through the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the technical field of textile fibers, and particularly relates to a hydrophilic polyester fiber and a preparation method thereof, wherein the hydrophilic polyester fiber is obtained by carrying out melt spinning on a hydrophilic polyester, and the hydrophilic polyester is obtained by polymerizing a ethylene glycol terephthalate oligomer and polyether diol under the actionof a titanium metal alkoxide, a polyhydroxy compound and a phosphorus compound/hindered phenol compound/acetate complex. According to the present invention, the hydrophilic polyester fiber has characteristics of yellowing resistance, reduced viscosity reduction during molding processing, good moisture absorption performance, good normal pressure dyeing performance, no heavy metal pollution, softhand feeling and excellent hue.

Description

technical field [0001] The invention belongs to the technical field of textile fibers, and in particular relates to a hydrophilic polyester fiber and a preparation method thereof. Background technique [0002] Polyester fiber has the advantages of high breaking strength, stable shape, good crispness, anti-wrinkle and non-ironing, easy to wash and dry, and is an ideal textile fiber. [0003] However, due to the high regularity of polyester molecular chains, lack of hygroscopic groups such as hydroxyl groups and amino groups, and only ester groups with low polarity, these structural characteristics endow polyester fibers with excellent mechanical properties and also make polyester fibers There are disadvantages such as low hygroscopicity, and the fabric feels damp and stuffy when worn, which reduces its wearing comfort. [0004] Therefore, how to improve the hydrophilic properties of polyester fibers and improve the moisture permeability of their fabrics is one of the importa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): D01F6/84C08G63/672C08G63/85D01D1/00D01D4/04
CPCC08G63/672C08G63/85D01D1/00D01D4/04D01F6/84
Inventor 邱志成钟淑芳李志勇金剑刘玉来杨喆陈伟
Owner CHINA TEXTILE ACADEMYTIANJINSCI & TECH DEV CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap