Ultraviolet curing reaction-based fluoride-free and water-repellent finishing method of cotton fabric

A fluorine-free water-repellent and curing reaction technology, applied in the directions of physical treatment, fiber treatment, plant fiber, etc., can solve the problems of poor fastness of the finishing agent, not resistant to washing, expensive fluorine-containing mercaptans, etc. The effect of high washing fastness and obvious water repellent effect

Inactive Publication Date: 2017-05-10
DONGHUA UNIV
View PDF3 Cites 33 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this method is that the finishing agent has poor fastness, is not resistant to washing, and the fluorine-containing mercaptan is expensive

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ultraviolet curing reaction-based fluoride-free and water-repellent finishing method of cotton fabric
  • Ultraviolet curing reaction-based fluoride-free and water-repellent finishing method of cotton fabric
  • Ultraviolet curing reaction-based fluoride-free and water-repellent finishing method of cotton fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Use 3-mercaptopropyltriethoxysilane to modify the cotton fabric, and react with vinyl POSS and mercaptosilane to make the cotton have good water repellency. The specific steps are:

[0037] (1) Pre-processing stage:

[0038] ① Prepare 15g / L sodium hydroxide and 7g / L Pingping O solution, and roughen the cotton fabric for 20 minutes at 70°C;

[0039] ② Prepare a 5wt% 3-mercaptopropyltriethoxysilane ethyl acetate solution, put the roughened cotton fabric into the solution, seal the beaker mouth with a film, place it in a constant temperature magnetic stirring water bath, and shake it at 25°C for 2 hours ;

[0040] ③Take out the cotton fabric, wash it thoroughly in distilled water, and dry it under vacuum at 60°C;

[0041] (2) Finishing stage:

[0042] ① Prepare vinyl POSS and 3-mercaptopropyltriethoxysilane dichloromethane solutions with a mass concentration of 1%, fully ultrasonically oscillate, and then add 2,2-dimethoxy-2-phenylacetophenone Photoinitiator, ultrasoni...

Embodiment 2

[0047] Use 3-mercaptopropyltriethoxysilane to modify the cotton fabric, and react with vinyl POSS and alkyl mercaptan to make the cotton have good water repellency. The specific steps are:

[0048] (1) Pre-processing stage:

[0049] ① Prepare 15g / L sodium hydroxide and 7g / L Pingping O solution, and roughen the cotton fabric for 20 minutes at 70°C;

[0050] ② Prepare a 5wt% 3-mercaptopropyltriethoxysilane ethyl acetate solution, put the roughened cotton fabric into the solution, seal the beaker mouth with a film, place it in a constant temperature magnetic stirring water bath, and shake it at 25°C for 2 hours ;

[0051] ③Take out the cotton fabric, wash it thoroughly in distilled water, and dry it under vacuum at 60°C;

[0052] (2) Finishing stage:

[0053] ① Prepare a dichloromethane solution of vinyl POSS and dodecanethiol with a mass concentration of 1%, fully ultrasonically oscillate, then add 2,2-dimethoxy-2-phenylacetophenone photoinitiator, and ultrasonically Shock; ...

Embodiment 3

[0058] Use 3-mercaptopropyltriethoxysilane to modify polyester-cotton fabric (65 / 35), and react with vinyl POSS and alkyl mercaptan to make polyester-cotton have good water repellency. The specific steps for:

[0059] (1) Pre-processing stage:

[0060] ①Prepare 15g / L sodium hydroxide and 7g / L PingPingO solution, roughen the polyester-cotton fabric for 20min at 70°C;

[0061] ② Prepare a 5wt% 3-mercaptopropyltriethoxysilane ethyl acetate solution, put the roughened polyester-cotton fabric into the solution, seal the beaker with a film, place it in a constant temperature magnetic stirring water bath, and shake it at 25°C for 2 Hour;

[0062] ③Take out the polyester-cotton fabric, wash it thoroughly in distilled water, and dry it under vacuum at 60°C;

[0063] (2) Finishing stage:

[0064] ① Prepare a dichloromethane solution of vinyl POSS and dodecanethiol with a mass concentration of 1%, fully ultrasonically oscillate, then add 2,2-dimethoxy-2-phenylacetophenone photoinitia...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
critical surface tensionaaaaaaaaaa
Login to view more

Abstract

The invention discloses an ultraviolet curing reaction-based fluoride-free and water-repellent finishing method of cotton fabric. The method comprises the steps of putting the cotton fabric into 3-mercaptopropyl triethoxysilane ethyl acetate solution and carrying out mercapto modification to obtain pretreated cotton fabric; dipping the cotton fabric subjected to mercapto modification into vinyl polyhedral oligomeric silsesquioxane solution, and obtaining the fluoride-free and water-repellent cotton fabric, which has a surface with an approximate super-hydrophobic effect, under the ultraviolet curing condition. The reaction is based on the principle of click chemistry, so that a static contact angle is basically remained unchanged after soaping treatment is carried out. Furthermore, according to a test method of AATCC 22-2005 waterproof spray test, the waterproof spray test score of the cotton fabric subjected to water-repellent finishing reaches 95. The ultraviolet curing reaction-based fluoride-free and water-repellent finishing method of the cotton fabric is simple in operation and high in efficiency, obvious in water-repellent effect under the condition that a finishing agent is fluoride-free, and high in finishing washing fastness.

Description

technical field [0001] The invention belongs to the field of functional finishing of cotton fabrics, in particular to a fluorine-free water-repellent finishing method for cotton fabrics based on ultraviolet light curing reaction. Background technique [0002] The purpose of water-repellent finishing is to prevent the wetting of the fabric by water, and use the additional pressure of the capillary of the fabric to prevent the penetration of liquid water, but still maintain the breathable and moisture-permeable performance of the fabric. Water-repellent finishing fabrics were first used in the production of military uniforms and protective clothing, and are now widely used in the production of sportswear, travel clothes, travel bags, tents, etc. Perfluorinated finishing agents are widely used in industrial production and consumer life because of their excellent thermal stability, chemical stability, high surface activity and hydrophobic and oleophobic properties. Currently co...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/513D06M10/10D06M10/08D06M101/06
CPCD06M13/513D06M10/08D06M10/10D06M2101/06D06M2200/12
Inventor 俞丹王炜孙第
Owner DONGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap