A kind of degradable polyester fiber and preparation method thereof

A technology for degrading polyester and fiber, applied in the field of polyester fiber, can solve the problem that polyester fiber cannot be recycled, and achieve the effect of excellent degradable performance, low cost and simple process

Active Publication Date: 2021-08-13
JIANGSU HENGLI CHEM FIBER
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a degradable polyester fiber and a preparation method thereof, aiming to solve the problem that some polyester fibers cannot be recycled in the prior art

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
  • A kind of degradable polyester fiber and preparation method thereof
  • A kind of degradable polyester fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A preparation method of degradable polyester fiber, extruding PET melt with an intrinsic viscosity of 0.6dL / g from the three-lobed spinneret hole on the spinneret and cooling it with ring blowing, and making FDY yarn according to the FDY process , and then the degradable polyester fiber is obtained through relaxation heat treatment;

[0040] 0.03wt% doped modified ZrO dispersed in PET melt 2 , the process of doping modification is as follows: firstly, the concentration of 1wt% Mg(NO 3 ) 2 aqueous solution with a concentration of 20wt% ZrO 2 Nitric acid solution is mixed evenly, and then the ammoniacal liquor of concentration 2mol / L is added dropwise to the pH value of mixed solution to be 9 (when precipitation starts, Mg in mixed solution 2+ with Zr 4+ The molar ratio is 5:100), and finally the precipitated product is calcined (the precipitated product is washed and dried before the calcination, the drying temperature is 105°C, and the time is 2h), the calcining pro...

Embodiment 2

[0046] A preparation method of degradable polyester fiber, extruding PET melt with an intrinsic viscosity of 0.62dL / g from the three-lobed spinneret hole on the spinneret and cooling it by ring blowing, and making FDY yarn according to the FDY process , and then the degradable polyester fiber is obtained through relaxation heat treatment;

[0047] 0.03wt% doped modified ZrO dispersed in PET melt 2 , the process of doping modification is as follows: firstly, the concentration of 1wt% Mg(NO 3 ) 2 aqueous solution with a concentration of 21wt% ZrO 2 Nitric acid solution is mixed evenly, and then the ammoniacal liquor of concentration 2mol / L is added dropwise to the pH value of mixed solution to be 9 (when precipitation starts, Mg in mixed solution 2+ with Zr 4+ The molar ratio is 8:100), and finally the precipitated product is calcined (the precipitated product is washed and dried before calcination, the drying temperature is 105°C, and the time is 2h). 3h, then heat up to 7...

Embodiment 3

[0053] A preparation method of degradable polyester fiber, extruding PET melt with an intrinsic viscosity of 0.61dL / g from the three-lobed spinneret hole on the spinneret and then cooling it by ring blowing, and making FDY yarn according to the FDY process , and then the degradable polyester fiber is obtained through relaxation heat treatment;

[0054] 0.03wt% doped modified ZrO dispersed in PET melt 2 , the process of doping modification is as follows: firstly, LiNO with a concentration of 1wt% 3 aqueous solution with a concentration of 25wt% ZrO 2 The nitric acid solution is mixed evenly, and then the ammoniacal liquor of concentration 2mol / L is added dropwise to the pH value of mixed solution to be 9 (when precipitation starts, Li in mixed solution + with Zr 4+ The molar ratio is 5:100), and finally the precipitated product is calcined (the precipitated product is washed and dried before the calcination, the drying temperature is 105°C, and the time is 2h), the calcining...

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

PropertyMeasurementUnit
shrinkageaaaaaaaaaa
stabilityaaaaaaaaaa
elastic recovery rateaaaaaaaaaa
Login to view more

Abstract

The invention relates to a degradable polyester fiber and a preparation method thereof. The preparation method is: dispersing doped and modified ZrO 2 The PET melt is extruded from the three-lobed spinneret hole on the spinneret and cooled by ring air, and FDY filaments are produced according to the FDY process, and then degradable polyester fibers are obtained through relaxation heat treatment; among them, the spinneret The three-lobed spinneret hole is a spinneret hole whose three lobes are not completely equal in length and the included angle between the three lobes is not exactly equal. All the three-lobed spinneret holes are distributed in concentric circles. The center line of the leaves opposite to the minimum angle passes through the center of the circle and points away from the center of the circle; the prepared degradable polyester fiber has a three-dimensional curled shape, and after being placed for 60 months at a temperature of 25°C and a relative humidity of 65%, Its intrinsic viscosity drops by 10-16%. The process of the invention is simple, and the prepared degradable polyester fiber has excellent degradability and good elasticity.

Description

technical field [0001] The invention belongs to the technical field of polyester fibers, and relates to a degradable polyester fiber and a preparation method thereof. Background technique [0002] The advent of chemical fibers began with the development of organic synthetic chemistry and polymer chemistry in the 1920s. In just a few decades, it has become the backbone of the industry, and its output and application far exceed natural fibers. Among them, polyester, nylon, and acrylic are the three major fibers in chemical fibers. Among these three fibers, polyester has the fastest development speed, the most widely used, and the highest output. It has become the crown of chemical fibers and is one of the most important textile materials today. one. Polyester fiber is the largest variety of synthetic fiber, it is based on purified terephthalic acid (PTA) or dimethyl terephthalate (DMT) and ethylene glycol (EG) as raw materials through esterification or transesterification and...

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
Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92D01F1/10D01D5/253D01D10/02D01D5/22
CPCD01F6/92D01F1/10D01D5/253D01D10/02D01D5/22D01F6/62D01D5/088Y02W30/62
Inventor 王山水范红卫汤方明王丽丽
Owner JIANGSU HENGLI CHEM FIBER
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