Preparation method of super-hydrophobic and dust-proof stainless steel filter screen

A stainless steel, super-hydrophobic technology, used in separation methods, chemical instruments and methods, filtration and separation, etc., can solve problems such as the ability to be improved, and achieve excellent bactericidal performance, improved binding, and mild reaction conditions.

Active Publication Date: 2019-02-22
SHANDONG AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional filters only have ordinary filtering ability, and the ability to sterilize and degrade harmful gases such as formaldehyde needs to be improved. At present, there is no effective dust-proof, sterilizing and self-cleaning method

Method used

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  • Preparation method of super-hydrophobic and dust-proof stainless steel filter screen
  • Preparation method of super-hydrophobic and dust-proof stainless steel filter screen
  • Preparation method of super-hydrophobic and dust-proof stainless steel filter screen

Examples

Experimental program
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Effect test

Embodiment 1

[0040] At room temperature, first place a 2cm×2cm stainless steel filter in FeCl 3 / HCl mixed solution (concentrations are 0.2mol / L, 0.05mol / L, respectively) etch for 10min. Wash the above filter until the pH is neutral, remove the solution remaining on the surface, and dry it for later use. Then add the etched filter to 0.1mol / L sodium hydroxide solution at 85°C and soak for 2 hours, so that more hydroxyl groups are attached to the surface of the filter to facilitate modification, take it out and wash until neutral;

[0041] 4.0g hexamethyldisilazane, 3.0g tetraethyl orthosilicate, 0.3g nano-ZnO and 0.4g g-C 3 N 4 Add 5 drops of dibutyltin dilaurate into the mixed solution of 88mL absolute ethanol, 5mL ammonia water and 7mL deionized water, stir for 30min at a stirring rate of 500 rpm, make it evenly mixed, configure the modified solution; finally filter The mesh was soaked in the above mixed solution for 6 hours, and then cured in an oven at 120°C for 8 hours to obtain a ...

Embodiment 2

[0053] At room temperature, first place a 6cm×4cm stainless steel filter in FeCl 3 / HCl mixed solution (concentrations are 1.0 mol / L, 0.06 mol / L, respectively) etch for 10 min. Wash the above filter until the pH is neutral, remove the solution remaining on the surface, and dry it for later use. Then add the etched filter to 0.2mol / L sodium hydroxide solution at 78°C and soak for 2 hours, so that more hydroxyl groups are attached to the surface of the filter to facilitate modification, take it out and wash until neutral;

[0054] 4.5g of octyltriethoxysilane, 2.2g of γ-glycidyl etheroxypropyltrimethoxysilane, 1.6g of sodium silicate, 0.2g of nano-TiO 2 Add 0.6g of ZnO and 6 drops of p-toluenesulfonic acid into a mixed solution of 90mL of absolute ethanol, 2mL of ammonia water and 6mL of deionized water, stir at a stirring rate of 500 rpm for 30min, make it evenly mixed, and configure the modified solution. Finally, soak the filter screen in the above mixed solution for 6 hour...

Embodiment 3

[0056] At room temperature, first place an 8cm×4cm stainless steel filter in FeCl 3 / HCl mixed solution (concentrations are 1.2 mol / L, 0.3 mol / L, respectively) for etching for 5 min. Wash the above filter until the pH is neutral, remove the solution remaining on the surface, and dry it for later use. Then add the etched filter to 0.2mol / L sodium hydroxide solution at 90°C and soak for 2 hours, so that more hydroxyl groups can be attached to the surface of the filter to facilitate modification, take it out and wash until neutral;

[0057] 4.5g octyltriethoxysilane, 2.6g dodecyl tripotassium oxysilane, 1.8g sodium silicate, 0.8gg-C 3 N 4 Add 0.6g of nano-ZnO and 4 drops of dibutyltin dilaurate to a mixed solution of 90mL of absolute ethanol, 2mL of ammonia water and 8mL of deionized water, stir at a stirring rate of 500 rpm for 30min to make it evenly mixed, and configure the modified solution. Finally, soak the filter screen in the above mixed solution for 6 hours, and put ...

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Abstract

The invention belongs to the field of new materials, and provides a preparation method of a super-hydrophobic and dust-proof stainless steel filter screen. The method comprises the steps: forming a gully-like structure on the surface of a stainless steel filter screen by etching, further attaching a super-hydrophobic and photocatalytic substance coating to obtain the super-hydrophobic filter screen. The filter screen has low surface energy and catalytic properties of nano materials, and can reduce the adhesion of dust, oils and dirt, catalyze the degradation of harmful gases, and has antibacterial activity, and can be used in air purification systems such as air purifiers and fresh air systems, and household filtering systems such as kitchen ventilator, refrigerators and air conditioners.The preparation method of the filter screen is simple, mild in reaction conditions and suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of new materials and provides a preparation method of a super-hydrophobic and dust-proof stainless steel filter screen. Background technique [0002] Nowadays, the current situation of air deterioration continues to occur, and haze weather occurs more and more frequently. As people pay more attention to health and pay more and more attention to air quality, various products to control air pollution are constantly coming out. In this market boom, the most profitable products are air purification products. Air purification products can absorb harmful substances such as inhalable particles and formaldehyde in the air, and have the effect of purifying the air, thereby ensuring air quality and protecting the health of users. However, after using it for a period of time, its core part - the surface of the air purification filter is prone to dust, difficult to clean, and easy to attach harmful bacteria. Severe dust on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/12B01D46/00
CPCB01D39/12B01D46/0001B01D46/0027B01D46/0028B01D2239/0428B01D2239/0442B01D2239/10B01D2239/1291
Inventor 艾仕云刘春增侯菊英田清源
Owner SHANDONG AGRICULTURAL UNIVERSITY
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