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Perfluoropolyether modified antifouling droplet-preventing copolyester and preparation method thereof

A technology of perfluoropolyether and copolyester, applied in the direction of single-component copolyester rayon, etc., can solve the problem of polyester antifouling, flame retardant and anti-droplet properties, and the synergistic effect of modified components is not clear , the effect of polyester fiber formation and other issues, to achieve excellent anti-droplet performance, good market application prospects, and low cost effects

Inactive Publication Date: 2015-03-25
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2012, the output of polyester fiber in China reached 32 million tons. However, due to the serious homogeneity of products and the low added value of products, many enterprises are facing difficulties in starting operations. Therefore, the development of polyester fibers with high added value It has far-reaching significance for improving the market competitiveness of enterprises and reversing the current difficult plight of polyester enterprises
[0006] In addition, in these reports, the research mainly focuses on a certain property of antifouling or flame retardancy, and the prepared polyester has less antifouling and flame retardancy and anti-droplet properties. This is mainly due to the introduction of multiple components into the polymer. Among esters, the fiber-forming properties of polyester are greatly affected; the synergistic effect between the introduced modified components is not clear, the modification lacks high efficiency, and it is easy to cause a substantial increase in the cost of modification

Method used

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  • Perfluoropolyether modified antifouling droplet-preventing copolyester and preparation method thereof
  • Perfluoropolyether modified antifouling droplet-preventing copolyester and preparation method thereof
  • Perfluoropolyether modified antifouling droplet-preventing copolyester and preparation method thereof

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Effect test

Embodiment 1

[0023]The preparation method of anti-fouling and anti-droplet copolyester uses terephthalic acid, ethylene glycol, and hydroxyl-terminated perfluoropolyether as raw materials, and according to the molar ratio of terephthalic acid and ethylene glycol is 1: 1.67, the first step First, ethylene glycol and terephthalic acid are mixed in proportion. Under the protection of nitrogen, under the condition of 0.3MPa, the esterification reaction of terephthalic acid and ethylene glycol is carried out under the pressure condition of the first step. The esterification reaction The temperature is 260°C, and the reaction is 3h. In the second step, then add the hydroxyl-terminated perfluoropolyether to carry out precondensation at high temperature and normal pressure, and the molar ratio of terephthalic acid to perfluoropolyether is 1:0.20; the average mass-average molecular weight of the perfluoropolyether is It is 3000; control the precondensation reaction temperature at 260°C and keep it ...

Embodiment 2

[0026] The preparation method of anti-fouling and anti-droplet copolyester uses terephthalic acid, ethylene glycol, and hydroxyl-terminated perfluoropolyether as raw materials, and according to the molar ratio of terephthalic acid and ethylene glycol is 1: 1.25, the first step First, ethylene glycol and terephthalic acid are mixed in proportion. Under the protection of nitrogen, under the condition of 0.2MPa, the esterification reaction of terephthalic acid and ethylene glycol is carried out under the pressure condition of the first step. The esterification reaction The temperature was 220°C, and the reaction was carried out for 5 hours. In the second step, then add the hydroxyl-terminated perfluoropolyether to carry out precondensation at high temperature and normal pressure, and the molar ratio of terephthalic acid to perfluoropolyether is 1:0.05; the average mass-average molecular weight of the perfluoropolyether is It is 20000; control the precondensation reaction temperat...

Embodiment 3

[0029] The preparation method of anti-fouling and anti-droplet copolyester uses terephthalic acid, ethylene glycol, and hydroxyl-terminated perfluoropolyether as raw materials, and the molar ratio of terephthalic acid and glycol is 1: 1.25. The first step First, ethylene glycol and terephthalic acid are mixed in proportion. Under the protection of nitrogen, under the condition of 0.3MPa, the esterification reaction of terephthalic acid and ethylene glycol is carried out under the pressure condition of the first step. The esterification reaction The temperature was 240°C, and the reaction was carried out for 5 hours. In the second step, then add the hydroxyl-terminated perfluoropolyether to carry out precondensation at high temperature and normal pressure, and the molar ratio of terephthalic acid to perfluoropolyether is 1:0.20; the average mass-average molecular weight of the perfluoropolyether is It is 6000; control the precondensation reaction temperature at 260°C and keep i...

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Abstract

The invention discloses a perfluoropolyether modified antifouling droplet-preventing copolyester and a preparation method thereof. The surface energy of the copolyester is not more than 25mJ / cm<2>, the limiting oxygen index is more than 34, and the intrinsic viscosity is 0.50-0.65dL / g. The preparation method of the copolyester comprises the following steps of: (1) mixing ethylene glycol with terephthalic acid in proportion, and carrying out esterification reaction on ethylene glycol and terephthalic acid by pressurizing; and (2) adding terminal hydroxyl perfluoropolyether, carrying out pre-condensation at atmospheric pressure by heating, and carrying out post-condensation reaction in vacuum by heating to obtain the copolyester, wherein ethylene glycol, terephthalic acid and terminal hydroxyl perfluoropolyether serve as raw materials. The copolyester prepared by adopting the preparation method has excellent flame resisting performance, antifouling performance and droplet preventing performance and has a broad application prospect in the field of textiles.

Description

technical field [0001] The invention relates to a perfluoropolyether modified anti-fouling and anti-melting drop copolyester and a preparation method thereof, belonging to the field of multifunctional modification of polyester. Background technique [0002] Polyester fiber is a polyester obtained by polycondensation of organic dibasic acid and dibasic alcohol, and then a synthetic fiber obtained by melt spinning. Usually polyester fiber refers to the fiber spun from polyethylene terephthalate. The Chinese trade name is polyester, which is currently the largest variety of synthetic fiber. Polyester fiber has excellent properties such as high strength, high modulus, good shape retention, and high dimensional stability, and is widely used in various fields such as clothing, decoration, industry and agriculture. In 2012, the output of polyester fiber in China reached 32 million tons. However, due to the serious homogeneity of products and the low added value of products, many e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/682D01F6/84
Inventor 江振林王朝生王华平季诚昌吉鹏汤廉晋缙
Owner DONGHUA UNIV
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