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Fluorine-free water-repellent finishing method for polyester fabric

A fluorine-free water-repellent technology for polyester fabrics, applied in physical treatment, fiber treatment, textiles and papermaking, etc., can solve the problems of poor water-repellent effect and long finishing time, and achieve reduced finishing time, high washing fastness, The effect of water repellent effect is obvious

Active Publication Date: 2021-12-21
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a fluorine-free water-repellent finishing method for polyester fabrics, which overcomes the shortcomings of the existing water-repellent finishing that requires the use of fluorine-containing reagents, long finishing time, and poor water-repellent effect.

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
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  • Fluorine-free water-repellent finishing method for polyester fabric
  • Fluorine-free water-repellent finishing method for polyester fabric
  • Fluorine-free water-repellent finishing method for polyester fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Wash the polyester fabric with ethyl acetate at room temperature and dry it at 50°C for use, then treat it in 300g / L concentrated alkali solution at room temperature for 10 minutes, take it out and cover it with polyethylene film, then transfer it to an oven at 120°C for 3 minutes . Then use 8g / L acetic acid solution to remove residual lye and then rinse with a large amount of deionized water until the surface of the fabric is neutral, and finally bake it in a 50°C oven until dry to obtain a pretreated polyester fabric.

[0042] (2) prepare 3wt% 3-mercaptopropyl triethoxysilane ethyl acetate solution, adopt solution dipping method to carry out mercapto group modification, the pretreatment polyester fabric that step (1) obtains is dropped in the solution, beaker mouth film sealing , placed in a constant temperature magnetic stirring water bath, 25 ° C shock treatment for 2 hours, the polyester fabric was taken out, fully washed in distilled water, and vacuum-dried at...

Embodiment 2

[0047] (1) Wash the polyester fabric with ethyl acetate at room temperature and dry it at 50°C for use, then treat it in a 360g / L concentrated alkali solution at room temperature for 10 minutes, take it out and cover it with polyethylene film, then transfer it to an oven at 120°C for 3 minutes . Then use 10g / L acetic acid solution to remove residual lye and then rinse with a large amount of deionized water until the surface of the fabric is neutral, and finally bake it in a 50°C oven until dry to obtain a pretreated polyester fabric.

[0048] (2) Prepare 5wt% 3-mercaptopropyltriethoxysilane ethyl acetate solution, adopt solution dipping method to carry out mercapto modification, put the pretreated polyester fabric obtained in step (1) into the solution, and seal the beaker mouth film , placed in a constant temperature magnetic stirring water bath, 25 ° C shock treatment for 2 hours, the polyester fabric was taken out, fully washed in distilled water, and vacuum-dried at 60 ° C...

Embodiment 3

[0052] (1) Wash the polyester fabric with ethyl acetate at room temperature and dry it at 50°C for use, then treat it in 300g / L concentrated alkali solution at room temperature for 10 minutes, take it out and cover it with polyethylene film, then transfer it to an oven at 120°C for 3 minutes . Then use 3g / L acetic acid solution to remove residual lye and then rinse with a large amount of deionized water until the surface of the fabric is neutral, and finally bake it in a 50°C oven until dry to obtain a pretreated polyester fabric.

[0053] (2) prepare 3wt% 3-mercaptopropyl triethoxysilane ethyl acetate solution, adopt solution dipping method to carry out mercapto group modification, the pretreatment polyester fabric that step (1) obtains is dropped in the solution, beaker mouth film sealing , placed in a constant temperature magnetic stirring water bath, 25 ° C shock treatment for 2 hours, the polyester fabric was taken out, fully washed in distilled water, and vacuum-dried at...

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Abstract

The invention relates to a fluorine-free and water-repellent finishing method for polyester fabrics, comprising: (1) cleaning the polyester fabrics, treating them with a concentrated alkali solution, wrapping them with a polyethylene film, baking them, neutralizing them with an acid solution, washing them with water until neutral, Obtain the pretreatment polyester fabric; (2) place the pretreatment polyester fabric in the ethyl acetate solution of 3-mercaptopropyltriethoxysilane, carry out mercapto group modification, obtain the mercapto group modified polyester fabric; (3) place the mercapto group The modified polyester fabric is dipped in poss solution or a mixed solution of poss and long-chain alkyl mercaptan, and cured by ultraviolet light. The invention has the advantages of simple operation, high efficiency, obvious water-repelling effect, durable water-repelling effect, and high washing fastness to treatment.

Description

technical field [0001] The invention belongs to the field of functional finishing of polyester fabrics, in particular to a fluorine-free water-repellent finishing method of polyester fabrics. Background technique [0002] With the improvement of living standards, in addition to the basic requirements for clothing textiles, various comfort properties, appearance properties and special properties are more and more popular. In order to meet the needs of people for special purposes, some new textiles after special finishing can have various excellent functions, and water and oil repellent finishing fabrics are one of them. The commonly used water-repellent agents are mainly silicone, aliphatic hydrocarbons and fluorine-containing compounds, among which fluorine-containing water-repellent agents can endow fabrics with good water and oil repellency. The purpose of fabric water-repellent finishing is to prevent water from wetting the fabric, and use the additional pressure of the ...

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
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Application Information

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IPC IPC(8): D06M15/227D06M11/38D06M13/252D06M13/513D06M10/10D06M101/32
Inventor 刘高阳俞丹王炜
Owner DONGHUA UNIV
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