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
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
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...
PUM
Property | Measurement | Unit |
---|---|---|
Particle size | aaaaa | aaaaa |
Particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com