Magnetic super-hydrophobic fabric and preparation method thereof

A super-hydrophobic, fabric technology, applied in plant fibers, animal fibers, textiles and papermaking, etc., can solve the problems of complex preparation process, single function, harsh reaction conditions, etc., and achieve the effect of simple process

Active Publication Date: 2018-04-17
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the shortcomings of the current superhydrophobic fabric preparation process, such as complex preparation process, harsh reaction conditions and single function, and provides a method for preparing superhydrophobic fabric with simple operation and low cost. The obtained fabric has good magnetic properties and excellent superhydrophobicity, and Fabric front and back have different adhesion to water droplets

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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  • Magnetic super-hydrophobic fabric and preparation method thereof
  • Magnetic super-hydrophobic fabric and preparation method thereof
  • Magnetic super-hydrophobic fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 2g of iron ferric oxide nanoparticles with a particle size of 20-40nm to 75g of ethanol for ultrasonic dispersion for 10min, then add 0.5g of tridecafluorooctyltriethoxysilane and 1g of water, and mechanically stir at room temperature for 12h. Then centrifuge at 8000rpm for 40min, and vacuum-dry the obtained product at 60°C for 1h to obtain modified ferric oxide nanoparticles;

[0028] Add 0.22g of modified iron ferric oxide nanoparticles, 0.5g of Sylgard 184 A component and 0.05g of B component into 6.875g of toluene for ultrasonic dispersion for 30min, then put a 2cm×2cm polyester fabric into the room temperature Stir mechanically at a speed of 300rpm for 30min, take out the fabric and place it 2mm below a magnet with a circular cross section and a radius of 2cm for 10min; finally place the fabric at a temperature of 80°C for 2h to obtain a micro-nano rough surface Structured magnetic superhydrophobic fabric.

[0029] The front scanning electron microscope image ...

Embodiment 2

[0033]Add 1g of iron ferric oxide nanoparticles with a particle size of 80‐100nm to 50g of ethanol for ultrasonic dispersion for 30min, then add 0.6g of mercaptopropyltriethoxysilane and 2g of water, stir mechanically at room temperature for 3h, and then Centrifuge at 12000rpm for 10min, and vacuum-dry the obtained product at 40°C for 12h to obtain modified ferric oxide nanoparticles; mix 0.033g of modified ferric oxide nanoparticles with 0.3g of Sylgard 184 A component and 0.03 g B component was added to 3.3g tetrahydrofuran and ultrasonically dispersed for 10min, then a 2cm×2cm cotton fabric was placed and mechanically stirred at a speed of 200rpm at room temperature for 20min, the fabric was taken out and placed in a cross-section of 4cm×4cm Keep 1mm below the magnet for 60min; finally, place the fabric at 130°C for 0.5h to prepare a magnetic superhydrophobic fabric with a micro-nano-rough structure on the surface.

[0034] Table 1 lists the water contact angle of the front...

Embodiment 3

[0036] Add 5g of iron ferric oxide nanoparticles with a particle size of 60‐80nm to 150g of ethanol for ultrasonic dispersion for 60min, then add 1g of aminopropyltriethoxysilane and 3g of water, stir mechanically at room temperature for 12h, and then Centrifuge at a rotating speed for 20min, and vacuum-dry the obtained product at 50°C for 6h to obtain modified ferric oxide nanoparticles; mix 0.11g of modified ferric oxide nanoparticles with 0.4g of Sylgard 184 A component and 0.04g Component B was added to 12.57g of hexane and ultrasonically dispersed for 20min, then a circular nylon fabric with a radius of 2cm was put in and mechanically stirred at a speed of 100rpm at room temperature for 60min, the fabric was taken out and placed in a circular and The magnet with a radius of 3 cm is kept 5 mm below the magnet for 60 min; finally, the fabric is placed at a temperature of 100 °C for 1 h to obtain a magnetic superhydrophobic fabric with a micro-nano rough structure on the surf...

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Abstract

The invention discloses a magnetic super-hydrophobic fabric and a preparation method thereof. The preparation method comprises the following steps: immersing an ordinary fabric into a mixed solution of polydimethylsiloxane-containing ferric oxide particles modified by a silane coupling agent and an organic solvent to be stirred; taking out the fabric, placing the fabric at a position which is 1-5mm away from the lower side of a magnet, maintaining at a room temperature for 10-60 minutes, and granularly migrating the ferric oxide particles to the polydimethylsiloxane surface layer on the fabricdue to the magnetic field action during solvent evaporation; and finally, placing the fabric at a temperature of 80-130 DEG C, and performing heat curing on the polydimethylsiloxane to form a cross-linked structure, thereby obtaining the magnetic super-hydrophobic fabric with a micro-nano rough structure on the surface. According to the invention, the process is simple, and for the prepared magnetic super-hydrophobic fabric, a front water contact angle is 167 degrees, and water drops easily roll; and an opposite water contact angle is 154 degrees, and the water drops are easily adhered. In addition, the fabric has excellent magnetism and saturation magnetization reaching 1.285emu/g.

Description

technical field [0001] The invention relates to a superhydrophobic material, in particular to a magnetic superhydrophobic fabric and a preparation method thereof. Background technique [0002] Due to its important application value in self-cleaning, anti-icing, anti-pollution, flame retardant, oil-water separation and other fields, superhydrophobic fabric has attracted widespread attention and is one of the hot spots of functional textiles. Inspired by the "lotus leaf effect" in nature, it was found that the superhydrophobicity of solid surfaces is jointly determined by the micro-nano geometric rough structure of the surface and low surface energy substances. Based on this principle, researchers have proposed a variety of methods to construct superhydrophobic fabrics, such as vapor deposition, chemical etching, sol-gel, electrospinning, layer-by-layer self-assembly, and spraying. For example, Xue, C.H. et al. combined lye etching and thiol click chemistry to construct a sup...

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 Applications(China)
IPC IPC(8): D06M11/49D06M15/643D06M101/06D06M101/32D06M101/12D06M101/28D06M101/38D06M101/34
Inventor 李红强苏晓竞曾幸荣赖学军陈中华
Owner SOUTH CHINA UNIV OF TECH
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