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Fluorinated polyester polyester pre-oriented yarn (POY) fibers and preparation method thereof

A technology of fluorine polyester and fluorine-containing polyester is applied in the field of fluorine polyester POY fiber and its preparation, and achieves the effects of solving the problem of timeliness, good heat resistance and low refractive index

Active Publication Date: 2013-12-25
JIANGSU LIXIN CHEM FIBER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hydrophobic and antifouling modification of polyester by copolymerization can fundamentally solve the problems of timeliness, durability and wear resistance of hydrophobic and antifouling polyester

Method used

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  • Fluorinated polyester polyester pre-oriented yarn (POY) fibers and preparation method thereof
  • Fluorinated polyester polyester pre-oriented yarn (POY) fibers and preparation method thereof
  • Fluorinated polyester polyester pre-oriented yarn (POY) fibers and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] A preparation method of fluoropolyester is divided into two steps of esterification reaction and polycondensation reaction. The specific steps are:

[0069] Described esterification reaction:

[0070] Ethylene glycol and tetrafluoroterephthalic acid with a molar ratio of 1.2:1 are used as raw materials, and magnesium oxide of 0.01% of the weight of tetrafluoroterephthalic acid is added at the same time to make a uniform slurry and carry out esterification reaction; esterification reaction In a nitrogen atmosphere, the pressure is controlled at 0.4MPa, the temperature is controlled at 250°C, and the distilled amount of esterification water reaches 90% of the theoretical value, which is the end point of the esterification reaction.

[0071] Described polycondensation reaction:

[0072] Including low vacuum stage of polycondensation reaction and high vacuum stage of polycondensation reaction:

[0073] In the low-vacuum stage of the polycondensation reaction, 0.01% of th...

Embodiment 2

[0078] A preparation method of fluoropolyester is divided into two steps of esterification reaction and polycondensation reaction. The specific steps are:

[0079] Described esterification reaction:

[0080] Use ethylene glycol and 2,5-difluoroterephthalic acid with a molar ratio of 1.4:1 as raw materials, and add 0.02% silicon oxide based on the weight of 2,5-difluoroterephthalic acid at the same time to prepare a uniform slurry Carry out esterification reaction; the esterification reaction is pressurized in a nitrogen atmosphere, the pressure is controlled at 0.3MPa, the temperature is controlled at 245°C, and the distilled amount of esterification water reaches 90% of the theoretical value, which is the end point of the esterification reaction.

[0081] Described polycondensation reaction:

[0082] Including low vacuum stage of polycondensation reaction and high vacuum stage of polycondensation reaction:

[0083] In the low vacuum stage of the polycondensation reaction, ...

Embodiment 3

[0088] A preparation method of fluoropolyester is divided into two steps of esterification reaction and polycondensation reaction. The specific steps are:

[0089] Described esterification reaction:

[0090] Use ethylene glycol and tetrafluoroterephthalic acid with a molar ratio of 1.6:1 as raw materials, and add 0.03% calcium oxide based on the weight of tetrafluoroterephthalic acid at the same time, make a uniform slurry and carry out esterification reaction; esterification reaction Pressurize in a nitrogen atmosphere, control the pressure at 0.2MPa, control the temperature at 240°C, and the esterification water distillate reaches 90% of the theoretical value, which is the end point of the esterification reaction.

[0091] Described polycondensation reaction:

[0092] Including low vacuum stage of polycondensation reaction and high vacuum stage of polycondensation reaction:

[0093] In the low vacuum stage of the polycondensation reaction, 0.03% of the catalyst antimony a...

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Abstract

The invention relates to fluorinated polyester polyester pre-oriented yarn (POY) fibers and a preparation method thereof. The preparation method comprises fluorinated polyester melt preparation and fluorinated polyester POY fiber preparation, and concretely comprises the following steps of 1, adding an inhibitor into fluorine-containing terephthalic acid and glycol as raw materials, and preparing the mixture into fluorinated polyester melt, and 2, carrying out direct extrusion on the fluorinated polyester melt or carrying out slicing and screw melt extrusion on the slices, and carrying cooling, oil coating and winding to obtain the fluorinated polyester POY fibers. The novel fluorinated polyester POY fibers have monofilament fineness of 0.5-3.0dtex, fiber breaking strength of 1.6-2.5cN / dtex and breaking elongation of 110-150%. Through use of fluorine atoms, super-hydrophobic, hydrophobic, oleophobic and antifouling performances of the polyester POY fibers are improved. The fluorinated polyester POY fibers have a wide application prospect in manufacture of waterproof and antifouling working clothes and special industry working clothes.

Description

technical field [0001] The invention relates to a fluoropolyester POY fiber and a preparation method thereof, in particular to a fluoropolyester POY fiber in which hydrogen on a benzene ring is replaced by fluorine and a preparation method thereof. Background technique [0002] Polyester (PET) is one of the most widely used synthetic polymers by humans. PET was synthesized as early as the 1940s, and it was found to have excellent properties, and it is widely used in textiles, packaging, and medical treatment. Sanitation, automobiles, electronic appliances, safety protection, environmental protection and other fields. Pre-oriented yarn POY refers to the raw yarn that has not been stretched but can be directly stretched and deformed. It is required that the POY yarn can be stored for a long time and has certain structural stability and processability. During the processing of POY yarn, there are generally no problems such as difficulty in spinning, finished silk wool, low str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/62D06M15/53D06M13/292D06M13/236C08G63/682C08G63/78D06M101/32
Inventor 张荣吴国旺丁建中宋怀军江立平黄卓旺曾晓元
Owner JIANGSU LIXIN CHEM FIBER TECH
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