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Multifunctional super-hydrophobic surface preparation method based on foam finishing technology

A super-hydrophobic surface and foam finishing technology, which is applied in the field of multi-functional super-hydrophobic surface preparation, can solve the problems of endangering the personal safety of environmental workers, difficulty in ensuring hydrophobicity, and low production efficiency, so as to prevent external liquid pollution and realize large-scale Industrialization, the effect of less liquid carry rate

Active Publication Date: 2021-01-12
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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  • Multifunctional super-hydrophobic surface preparation method based on foam finishing technology
  • Multifunctional super-hydrophobic surface preparation method based on foam finishing technology
  • Multifunctional super-hydrophobic surface preparation method 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 multifunctional super-hydrophobic surface preparation method based on a foam finishing technology. The multifunctional super-hydrophobic surface preparation method comprises the following steps of (1) adding polydimethylsiloxane and a curing agent into deionized water, stirring, adding a surfactant, adding fumed silica nanoparticles, and continuing stirring to obtain a hydrophobic finishing liquid; and (2) mechanically stirring the prepared hydrophobic finishing liquid until the hydrophobic finishing liquid is foamed, applying the generated foam to the fabric, and drying the fabric in a drying oven to obtain the long-acting durable multifunctional super-hydrophobic fabric. According to the method for preparing the super-hydrophobic surface fabric, no organic solvent is needed, environmental pollution is small, finishing liquid needed for treating the Z fabric is relatively less, cost is saved, and meanwhile, due to the fact that the fabric does not need to be soaked in the foam finishing technology, the single-face-hydrophobic or double-face-hydrophobic fabric can be prepared, some objects which are prone to damage after being soaked in water can be treated, and universality is high.

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

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Application Information

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Patent Type & Authority Applications(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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