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A preparation method of multifunctional superhydrophobic surface based on foam finishing technology

A super-hydrophobic surface and foam finishing technology, applied in the field of multi-functional super-hydrophobic surface preparation, can solve the problems of endangering the personal safety of environmental operators, difficult to ensure hydrophobicity, troublesome drying and molding, etc., to prevent external liquid pollution and realize large-scale Industrialization, the effect of low wearing comfort

Active Publication Date: 2021-11-26
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many restrictive factors for the large-scale industrialization of super-hydrophobic functional fabrics. First, the super-hydrophobic function needs to be modified with a low-surface-energy hydrophobic agent, and it is difficult to guarantee the hydrophobicity of the fluorine-free hydrophobic agent material with the usual method; the second is that Due to the hydrophobicity of the hydrophobic agent, it is usually necessary to use various organic solvents to dissolve the hydrophobic agent when preparing the finishing solution, and the excessive use of organic solvents will seriously endanger the environment and the personal safety of workers
Not only that, but the traditional fabric finishing method also consumes a lot of water resources and produces a lot of printing and dyeing wastewater. If it is not treated properly, it will cause serious harm to the environment. If it is completely treated, it will greatly increase the production cost and restrict my country's textile industry from moving towards the middle and high end. market
In addition, the traditional padding method needs to completely immerse the material in the finishing solution. For some materials with strong water storage performance, the rate of liquid retention after dipping treatment is high, resulting in troublesome subsequent drying and molding, resulting in low production efficiency.

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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  • A preparation method of multifunctional superhydrophobic surface based on foam finishing technology
  • A preparation method of multifunctional superhydrophobic surface based on foam finishing technology
  • A preparation method of multifunctional superhydrophobic surface based on foam finishing technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] 1) Preparation of hydrophobic finishing solution: Add 0.6 g of polydimethylsiloxane and 0.06 g of supporting curing agent into deionized water, ultrasonically vibrate and stir vigorously, then add 0.1 g of sodium lauryl sulfate and 0.04 g of dodecyl alcohol, continue to add 0.6 g of fumed silica nanoparticles, and stir vigorously under the action of ultrasonic oscillation to obtain a hydrophobic finishing solution;

[0044] 2) Applying foam to finish the fabric: Stir the hydrophobic finishing solution prepared above with a stirrer at 2500 r / min for 180 s until it foams, apply the hydrophobic foam to the polyester fabric and dry it in an oven at 150 °C for 120 min. The result is a long-lasting, multifunctional superhydrophobic fabric.

[0045] The surface structure of the treated polyester fabric was observed through a scanning electron microscope, and the scanning electron microscope photos are as follows: figure 1 shown. Lay the polyester fabric flat, add deionized w...

Embodiment 2

[0048] 1) Preparation of hydrophobic finishing solution: Add 1.5 g of polydimethylsiloxane and 0.15 g of supporting curing agent into deionized water, ultrasonically oscillate and stir vigorously, then add 0.3 g of sodium lauryl sulfate and 0.1 g of dodecanol, then add 1.5 g of fumed silica nanoparticles, and continue to stir vigorously under the action of ultrasonic oscillation to obtain a hydrophobic finishing solution;

[0049] 2) Apply foam to finish the fabric: Stir the hydrophobic finishing solution prepared above with a stirrer at 2000 r / min for 240 s until it foams, apply the hydrophobic foam to the polyester fabric, and control the amount of hydrophobic foam to make the polyester fabric One side is finished with hydrophobic foam, and the other side retains its original wettability as much as possible. Put the finished fabric above into an oven at 150°C to dry for 100 min, thus obtaining a long-lasting hydrophilic / hydrophobic Janus fabric surface.

[0050] Lay the sur...

Embodiment 3

[0053] 1) Preparation of hydrophobic finishing solution: Add 1.2 g of polydimethylsiloxane and 0.15 g of supporting curing agent into deionized water, ultrasonically oscillate and stir vigorously, then add 0.2 g of sodium lauryl sulfate and 0.12 g of dodecyl alcohol, then added 0.8 g of fumed silica nanoparticles, and continued to stir vigorously under the action of ultrasonic oscillation to obtain a hydrophobic finishing solution. Divide the hydrophobic finishing solution into two parts, A and B, add the blue dye methylene blue to A, and add the red dye erythrosin B sodium salt to B.

[0054] 2) Applying foam to finish the fabric: the two dyed hydrophobic finishing solutions prepared above were stirred with a stirrer at a speed of 2500r / min for 120 s until foaming, and a small amount of blue foam produced in A was applied to one side of the thick cotton cloth , put it in a 150°C oven to dry for 5 minutes, take it out, and then coat a small amount of red foam produced in B on ...

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Abstract

The invention provides a method for preparing a multifunctional superhydrophobic surface based on foam finishing technology. The method includes the following steps: (1) adding polydimethylsiloxane and curing agent to deionized water, stirring, and then adding Surfactant, then add fumed silica nanoparticles, and continue to stir to obtain a hydrophobic finishing solution; (2) The hydrophobic finishing solution prepared above is mechanically stirred until it foams, and the generated foam is applied to the fabric, and the fabric Place in the oven to dry for a long-lasting, multi-purpose superhydrophobic fabric. The preparation of super-hydrophobic surface fabrics by this method does not require the use of organic solvents, which has little environmental pollution, and requires less finishing liquid to treat Z fabrics, which saves costs. At the same time, because the foam finishing technology does not need to soak the fabrics, one-sided hydrophobic or double-sided fabrics can be prepared. It can be used for fabrics with hydrophobic surface, and for handling some water-soaked and easily damaged items. It has strong versatility.

Description

technical field [0001] The invention relates to a method for preparing a multifunctional superhydrophobic surface based on foam finishing technology, which belongs to the technical field of textile functional finishing. Background technique [0002] Clothes are indispensable items in people's daily life. Cotton clothes have the characteristics of good air permeability, biodegradability, and comfortable wearing, but they are also easy to be stained because of their good hydrophilicity and hygroscopicity. [0003] With the development of fabric surface treatment technology, researchers have obtained superhydrophobic fabrics by imitating superhydrophobic surfaces such as lotus leaves in nature. The superhydrophobic fabrics have functions such as self-cleaning and antifouling, and have attracted widespread attention. However, there are still many restrictive factors for the large-scale industrialization of super-hydrophobic functional fabrics. First, the super-hydrophobic functi...

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): D06M15/643D06M11/79D06M13/262D06M13/144D06M23/04D06M23/16D06P1/96C08J9/36D21H19/40D21H19/46D21H19/62D21H21/16D21H21/56D06M101/32D06M101/06D06M101/38C08L61/28
CPCC08J9/36C08J2361/28D06M11/79D06M13/144D06M13/262D06M15/643D06M23/04D06M23/16D06M2101/06D06M2101/32D06M2101/38D06M2200/12D06P1/965D06P2001/0092D21H19/40D21H19/46D21H19/62D21H21/16D21H21/56
Inventor 黄剑莹谢孝文赖跃坤
Owner FUZHOU UNIV
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