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Method for modifying super hydrophobicity of fabric

A superhydrophobic modification and fabric technology, which is applied in the processing of textile materials, textiles and papermaking, liquid/gas/steam textile material processing, etc., to achieve the effects of reducing emissions, saving heat energy, and easy storage and transportation

Inactive Publication Date: 2013-01-23
中明晟(天津)纺织科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses supercritical carbon dioxide as the medium, and directly uses solid fluorine compounds to modify the fabric hydrophobically. The production process does not involve water, which completely solves the problem of wastewater discharge pollution; It is troublesome to re-emulsify into emulsion, and it is easy to store and transport, safe and stable. It is a clean, environmentally friendly and low-consumption process.

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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  • Method for modifying super hydrophobicity of fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Adopt the method of the present invention to process polyester plain weave fabric, specification 210T.

[0024] Put the solid fluorine-containing hydrophobic finishing agent EX-1000E into a beaker, dry it in an oven at 40°C for 2 hours, control the moisture content to 1.5%, and seal it for later use.

[0025] Put the dried fluorine-containing hydrophobic finishing agent EX-1000E into supercritical CO according to 5% of the weight of the fabric 2 In the dyeing kettle, the polyester fabric is wound on the cast iron sand mandrel and placed in supercritical CO 2 In the dyeing kettle, in supercritical CO 2 In a fluid environment, the polyester fabric is subjected to superhydrophobic modification treatment; the treatment process conditions are: temperature 150°C, pressure 20MPa, time 4h; the superhydrophobic polyester fabric is obtained after treatment.

[0026] After testing, the contact angle of gained superhydrophobic polyester fabric is 150 °, rolling angle 5 ° (referri...

Embodiment 2

[0028] Adopt method of the present invention to process acetate fiber plain weave fabric, specification 210T.

[0029] Put the solid fluorine-containing hydrophobic finishing agent EX-1000E into a beaker, dry it in an oven at 80°C for 2 hours, control the moisture content to 2%, and seal it for later use.

[0030] Put the fluorine-containing hydrophobic finishing agent after drying into supercritical CO by 3% of the fabric weight 2 In the dyeing kettle, the polyester fabric is wound on the cast iron sand mandrel and placed in supercritical CO 2 In the dyeing kettle, in supercritical CO2 In a fluid environment, the polyester fabric is subjected to superhydrophobic modification treatment; treatment process conditions: temperature 120°C, pressure 30MPa, time 3h; after treatment, the superhydrophobic acetate fiber fabric is obtained.

[0031] After testing, the contact angle of the obtained superhydrophobic acetate fiber fabric is 154°, and the rolling angle is 5°.

Embodiment 3

[0033] Adopt the method of the present invention to process fabric polyester knit fabric, horizontal density 135 coils / 10cm, vertical density 190 coils / 10cm.

[0034] Put the solid fluorine-containing hydrophobic finishing agent EX-1000E into a beaker, dry it in an oven at 80°C for 1 hour, control the moisture content to 3%, and seal it for later use.

[0035] Put the fluorine-containing hydrophobic finishing agent after drying into supercritical CO by 6% of the fabric weight. 2 In the dyeing kettle, the polyester knitted fabric is wound on the cast iron sand mandrel and placed in supercritical CO 2 In the dyeing kettle, in supercritical CO 2 In a fluid environment, the polyester fabric is subjected to superhydrophobic modification treatment; treatment process conditions: temperature 130°C, pressure 8MPa, time 2.5h; after treatment, the superhydrophobic polyester knitted fabric is obtained.

[0036] After testing, the contact angle of the obtained superhydrophobic polyester ...

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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Abstract

The invention discloses a method for modifying the super hydrophobicity of fabric, which comprises the following steps of: putting a hydrophobicity finishing agent in to an oven with 40-80 DEG C; drying for 1-2h, so that the moisture content is less than 5 percent; sealing for later use; putting the dried hydrophobicity finishing agent into a supercritical CO2 dyeing kettle according to the proportion of the weigh of hydrophobicity finishing agent to the that of the fabric to be treated with 1-10 percent; winding the fabric to be treated on a cast iron core shaft, and putting into the dyeing kettle, so that the fabric is in the fluid environment of supercritical CO2; and modifying the super hydrophobicity of the fabric under the technical conditions that the temperature is 70-150 DEG C, the pressure is 8-30 MPa and the time is 1-4h, and withdrawing. The hydrophobicity finishing agent is a fluorine-containing hydrophobicity finishing agent.

Description

technical field [0001] The invention relates to a modification and finishing technology of textile materials, in particular to a superhydrophobic modification method of fabrics. Background technique [0002] Generally, a solid surface with a contact angle greater than 90° is called a hydrophobic surface; a solid surface with a contact angle greater than 150° is called a superhydrophobic surface. The unique surface properties of superhydrophobic textiles make them widely used in national defense, daily life and many industrial fields. [0003] At present, the superhydrophobic textile processing technology adopts the impregnation method or the pad-dry-baking method. The dipping method is to immerse the fabric in the working solution of the hydrophobic finishing agent under certain conditions, and then dry and bake the fabric after drying or absorbing water; the rolling-baking-baking method is to use soaking and rolling Carrying, the fabric is soaked in the working fluid, fol...

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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Patent Type & Authority Patents(China)
IPC IPC(8): D06M13/00D06B3/10
Inventor 杨文芳申晓星张庆富
Owner 中明晟(天津)纺织科技股份有限公司