Preparation method of super-hydrophobic polyester fibers

A water-polyester, super-hydrophobic technology, applied in the chemical characteristics of fibers, single-component polyester rayon, rayon manufacturing and other directions, can solve the problem of fibers not reaching super-hydrophobic performance, achieve excellent super-hydrophobic performance, improve Hydrophobicity, surface energy reduction effect

Inactive Publication Date: 2019-12-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the prepared fibers did not achieve superhydrophobic properties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Use terephthalic acid, ethylene glycol, catalyst, and fluorinated diol (2,2,3,3-tetrafluoro-1,4-butanediol) as raw materials to stir into a uniform slurry, then add it to the reactor for esterification , the molar ratio of ethylene glycol to terephthalic acid is 1.3, the amount of fluorine-containing compound added is 10%, the catalyst is ethylene glycol, and the amount of antimony used is 0.03% of the quality of terephthalic acid. The esterification reaction is carried out under pressure in a nitrogen atmosphere, the pressure is controlled at 0.25MPa, the temperature is at 260°C, and the esterification water distillation amount reaches more than 85% of the theoretical value, which is regarded as the end point of the esterification reaction.

[0030] Heat up and vacuumize to enter the low vacuum stage. When the vacuum degree reaches below 100Kpa, the temperature is controlled at 285°C, and the polycondensation reaction starts. The reaction end point is controlled accordi...

Embodiment 2

[0034]Use terephthalic acid, ethylene glycol, catalyst, fluorinated diol (1H, 1H, 9H, 9H-perfluoro-nonanediol) as raw materials to stir into a uniform slurry, then add it to the reactor for esterification reaction, B The molar ratio of diol to terephthalic acid is 1.7, the addition amount of fluorine-containing compound is 2%, and the catalyst is antimony acetate, and the dosage is 0.01% of the mass of the terephthalic acid. The esterification reaction is carried out under pressure in a nitrogen atmosphere, the pressure is controlled at 0.3 MPa, the temperature is at 265° C., and the esterification water distillation amount reaches more than 85% of the theoretical value, which is regarded as the end point of the esterification reaction.

[0035] Heat up and vacuumize to enter the low vacuum stage. When the vacuum degree reaches below 100Kpa, the temperature is controlled at 290°C, and the polycondensation reaction starts. The reaction end point is controlled according to the st...

Embodiment 3

[0039] Use terephthalic acid, ethylene glycol, catalyst, fluorinated diol (1H, 1H, 9H, 9H-perfluoro-nonanediol) as raw materials to stir into a uniform slurry, then add it to the reactor for esterification reaction, B The molar ratio of diol to terephthalic acid is 1.1; the addition amount of fluorine-containing compound is 20%, and the catalyst is antimony trioxide, and the dosage is 0.04% of the mass of the terephthalic acid. The esterification reaction is carried out under pressure in a nitrogen atmosphere, the pressure is controlled at 0.2 MPa, the temperature is at 255° C., and the esterification water distillation amount reaches more than 85% of the theoretical value, which is regarded as the end point of the esterification reaction.

[0040] Heat up and vacuumize to enter the low vacuum stage. When the vacuum degree reaches below 100Kpa, the temperature is controlled at 280°C, and the polycondensation reaction starts. The end point of the reaction is controlled according...

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Abstract

The invention provides a preparation method of super-hydrophobic polyester fibers. A fluorine-containing compound and a polyester raw material are subjected to copolymerization to obtain fluorine-containing polyester, dried fluorine-containing polyester chips, super-hydrophobic nano powder and a lubrication modifying agent are evenly stirred and extruded to form an even melt, and the melt is spunto be prepared into the super-hydrophobic polyester fibers. According to the preparation method, a small number of fluorine-containing polymers are added for polymerization to obtain the fluorine-containing polyester, since fluorine atoms are introduced into a chain segment, the surface energy of the polyester is lowered, and the hydrophobicity of the polyester is improved; the prepared polyesterfibers have excellent super-hydrophobicity, when super-hydrophobic SiO2 nano particles and the polyester are blended, an agglomeration does not easily occur, and the added lubrication modifying agentcan achieve the function of keeping a more lasting super-hydrophobic effect. The prepared super-hydrophobic polyester fibers can be used as raw materials of a super-hydrophobic anti-dirt fabric, an outdoor waterproof anti-dirt sports equipment fabric and the like, the step of hydrophobic modification on the surface of the fabric can be omitted, the cost is reduced, and the pollution of chemical surface super-hydrophobic modification to the environment is reduced.

Description

technical field [0001] The invention relates to a superhydrophobic fiber, in particular to a preparation method of a superhydrophobic polyester fiber. Background technique [0002] Generally, the surface with a contact angle with water greater than 90° is called a hydrophobic surface, while the surface with a contact angle with water greater than 150° is called a superhydrophobic surface. The special wettability of superhydrophobic surface makes it have excellent properties such as self-cleaning, anti-adhesion, antifouling, antibacterial, and waterproof, which has attracted great attention and research interest. Polyester fiber can be used in various fabrics, fabrics, and clothing fields. If it can be endowed with superhydrophobic self-cleaning properties, it can have broader application prospects. [0003] At present, the traditional superhydrophobic treatment of polyester materials mainly uses surface modification to construct micro-nano structures on the surface of the m...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/10
CPCD01F1/10D01F6/92
Inventor 周倩戴志彬夏峰伟常玉
Owner CHINA PETROLEUM & CHEM CORP
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