Bio-based degradable polyester fiber and preparation method thereof

A technology for degrading polyester and bio-based, applied in the direction of single-component polyetherester rayon, melt spinning, stretch spinning, etc., can solve the spinning processing requirements and processing difficulties, and the low viscosity of polyester materials cannot meet and other problems to achieve the effect of enhancing biodegradable performance, increasing hydrophilic performance and high quality

Active Publication Date: 2018-04-20
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a bio-based polyester material with good degradability, high viscosity and good thermal performance in order to overcome the problems in the prior art that the polyester material has low viscosity and cannot meet the spinning processing requirements and processing difficulties. Degradation of polyester to prepare it into fibers

Method used

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  • Bio-based degradable polyester fiber and preparation method thereof
  • Bio-based degradable polyester fiber and preparation method thereof
  • Bio-based degradable polyester fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] A preparation method of bio-based degradable polyester staple fiber, the specific steps are as follows:

[0064] (1) Esterification reaction;

[0065] Mix 1,2-propanediol, 1,2-butanedioic acid and tetrabutyl titanate evenly, then carry out esterification reaction until the esterification rate is 92% to obtain an esterified product; 1,2-propanediol and 1,2-butanediol The molar ratio when the acids are mixed is 1.2:1.0, the added amount of tetrabutyl titanate is 150ppm of the added amount of 1,2-butanedioic acid, the temperature of the esterification reaction is 200°C, and the pressure is 0.3MPa;

[0066] (2) Segmented precondensation reaction;

[0067] (2.1) the first precondensation reaction, add polyethylene glycol to the esterified product of step (1) and carry out the first precondensed reaction after mixing; the molar ratio of polyethylene glycol and esterified compound is 0.5:1.0 , the temperature of the first precondensation reaction is 220°C, the pressure is 0....

Embodiment 2

[0079] A preparation method of bio-based degradable polyester staple fiber, the specific steps are as follows:

[0080] (1) Esterification reaction;

[0081] Mix 1,2-pentanediol, 1,4-pentanedioic acid and tetrabutyl titanate uniformly and carry out esterification reaction until the esterification rate is 92% to obtain an esterified product; 1,2-pentanediol and 1, The molar ratio when mixing 4-glutaric acid is 1.2:1.0, the amount of tetrabutyl titanate added is 150ppm of the added amount of 1,4-glutaric acid, the temperature of the esterification reaction is 240°C, and the pressure is 0.3MPa ;

[0082] (2) Segmented precondensation reaction;

[0083] (2.1) the first precondensation reaction, add polyethylene glycol to the esterified product of step (1) and carry out the first precondensed reaction after mixing; the molar ratio of polyethylene glycol and esterified compound is 0.5:1.0 , the temperature of the first precondensation reaction is 220°C, the pressure is 0.1MPa, an...

Embodiment 3

[0092] A preparation method of bio-based degradable polyester staple fiber, the specific steps are as follows:

[0093] (1) Esterification reaction;

[0094] Mix 1,3-pentanediol, 1,5-pentanedioic acid and tetrabutyl titanate uniformly, then carry out esterification reaction until the esterification rate is 92% to obtain an esterified product; 1,3-pentanediol and 1, The molar ratio when mixing 5-glutaric acid is 1.2:1.0, the amount of tetrabutyl titanate added is 150ppm of the added amount of 1,5-glutaric acid, the temperature of the esterification reaction is 240°C, and the pressure is 0.3MPa ;

[0095] (2) Segmented precondensation reaction;

[0096] (2.1) the first precondensation reaction, add polyethylene glycol to the esterified product of step (1) and carry out the first precondensed reaction after mixing; the molar ratio of polyethylene glycol and esterified compound is 0.5:1.0 , the temperature of the first precondensation reaction is 220°C, the pressure is 0.1MPa, ...

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Abstract

The invention relates to a bio-based degradable polyester fiber and a preparation method thereof. The preparation method includes: adopting bio-based diol and bio-based binary acid as the raw materials, adopting melt polycondensation, carrying out esterification reaction, segmented pre-polycondensation reaction and final polycondensation reaction successively to obtain bio-based degradable polyester, and then conducting melt spinning forming to obtain the bio-based degradable polyester fiber. Specifically, the segmented pre-polycondensation reaction falls into first pre-polycondensation reaction and second pre-polycondensation reaction, wherein polyethylene glycol is added in the first pre-polycondensation reaction process, and a monomer with a polyhydroxyl structure is added in the secondpre-polycondensation reaction process. The final product has a moisture regain of greater than or equal to 2.0% and a surface contact angle of less than or equal to 60 degrees. The preparation methodprovided by the invention has a simple process, effectively reduces the duration of polycondensation reaction, lowers energy consumption and material consumption, and has good economic benefits. Theproduct prepared by the method provided b the invention has the advantages of good degradability, good fiber mechanical strength and high quality, and has great application prospects.

Description

technical field [0001] The invention belongs to the field of fiber preparation and relates to a bio-based degradable polyester fiber and a preparation method thereof. Background technique [0002] Bio-based materials refer to biomass synthetic materials, biomass renewable materials and basic chemical raw materials obtained through biosynthesis, bioprocessing, and biorefining processes using renewable resources as raw materials. Bio-based materials are currently mainly used to produce plastics, fibers, nylon and rubber, etc., which have the characteristics of renewable raw materials and less harmful substances generated during processing and production. Bio-based materials are the focus of the development of the modern bio-manufacturing industry, and also a major industrial direction for the green growth of the social economy. The large-scale development of bio-based materials will reduce the dependence of the chemical material industry on fossil resources, which is conduciv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/672C08G63/78D01F6/86D01D5/08D01D5/12D01D5/16D01D10/02
CPCC08G63/672C08G63/78D01D5/08D01D5/12D01D5/16D01D10/02D01F6/86
Inventor 吉鹏王华平王朝生陈烨乌婧王宇
Owner DONGHUA UNIV
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