Preparation method of oil-water separation mesh film with super-hydrophilicity and super-lipophobicity

An oil-water separation mesh membrane, superoleophobic technology, applied in functional materials, chemical and chemical fields, can solve the problems of complex manufacturing process, difficult to remove oil, affecting separation efficiency, etc., achieve simple equipment and manufacturing process, fast oil-water separation speed, The effect of cheap and easily available raw materials

Inactive Publication Date: 2017-08-22
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The oil-water separation membrane obtained by this method is superhydrophobic and superoleophilic, but because the lipophilic membrane is particularly easy to be polluted or even blocked, especially high-viscosity oil will seriously affect the separation efficiency, and the adhered oil is difficult to remove, resulting in Secondary pollution in the post-treatment process, the omentum is not easy to reuse
At the same time, the manufacturing process of this method is relatively complicated, and it is not easy to produce in a large area and at low cost.

Method used

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  • Preparation method of oil-water separation mesh film with super-hydrophilicity and super-lipophobicity
  • Preparation method of oil-water separation mesh film with super-hydrophilicity and super-lipophobicity
  • Preparation method of oil-water separation mesh film with super-hydrophilicity and super-lipophobicity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Soak a 1000-mesh (15 μm pore size) stainless steel mesh (5 cm x 5 cm) in acetone, isopropanol and deionized water for 10 minutes, and dry at room temperature;

[0026] (2) At room temperature, add 1 g of titanium dioxide (particle size 8 nanometers) and 150 ml of tetrahydrofuran (133.4 g) into a 250 ml single-necked bottle, and obtain 134.4 g of a stable suspension solution by ultrasonication for 60 minutes;

[0027] (3) the suspension solution that step (2) is obtained utilizes the high-pressure gas of air compressor to evenly spray to the surface of (1) dried stainless steel net; The nozzle aperture of spray gun is 1.0mm, and the air compressor pressure that connects spray gun remains on 0.4MPa, the spraying distance is 16cm.

[0028] (4) Aging the stainless steel mesh sprayed with the suspension in step (3) at room temperature for 30 minutes, and finally sintering at 550°C for 150 minutes to obtain an oil-water separation mesh with superhydrophilic and superoleop...

Embodiment 2

[0034] (1) immerse an 800-mesh (19 micron aperture) copper grid (5 cm x 5 cm) in acetone, isopropanol and deionized water for 10 minutes, and then dry it at room temperature;

[0035] (2) At room temperature, add 1g zinc oxide (particle size 10nm), 0.5g silicon dioxide (particle size 15nm), 100ml tetrahydrofuran (88.9g) into a 250ml single-necked bottle, and obtain 90.4g stable suspension for 80 minutes. solution;

[0036] (3) the suspension solution that step (2) is obtained utilizes the high-pressure gas of air compressor to be evenly sprayed to the surface of (1) dried copper net; The nozzle aperture of spray gun is 1.0mm, and the air compressor pressure that connects spray gun remains on 0.4MPa, the spraying distance is 16cm.

[0037] (4) Aging the copper mesh sprayed with the suspension in step (3) at room temperature for 50 minutes, and finally sintering at 450°C for 180 minutes to obtain an oil-water separation mesh with superhydrophilic and superoleophobic properties,...

Embodiment 3

[0041] (1) Submerge a 400-mesh (37 micron aperture) iron grid (5 cm x 5 cm) in acetone, isopropanol and deionized water for 10 minutes, and then dry it at room temperature;

[0042] (2) At room temperature, add 1g of zinc oxide (particle size 20 nanometers), 0.5g calcium carbonate (particle size 16 nanometers), 0.5g silicon dioxide (particle size 21 nanometers), 150ml tetrahydrofuran (133.4g ), ultrasonic 120 minutes obtains 135.4g stable suspension solution;

[0043] (3) the suspension solution that step (2) is obtained utilizes the high-pressure gas of air compressor to evenly spray to the surface of (1) dried iron net; The nozzle aperture of spray gun is 1.0mm, and the air compressor pressure that connects spray gun remains on 0.4MPa, the spraying distance is 16cm.

[0044] (4) Aging the iron mesh sprayed with the suspension in step (3) for 70 minutes at room temperature, and finally sintering at 350°C for 240 minutes to obtain an oil-water separation mesh with superhydrop...

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Abstract

The invention discloses a preparation method of an oil-water separation mesh film with super-hydrophilicity and super-lipophobicity. The method comprises the steps that a metal net with the mesh size being 400-2,000 is adopted as a substrate, a cold spraying method is adopted, net wires of the metal net are coated with hydrophilic materials in a spraying mode, the hydrophilic materials are one or more of zinc oxide, silicon dioxide, calcium carbonate and titanium dioxide, and the grain size range is 5-200 nanometers; finally sintering is performed under the temperature of 300-750 DEG C for 60-240 min, and the oil-water separation mesh film with super-hydrophilicity and super-lipophobicity is obtained. The metal net does not need to be modified, the binding force is improved with no adhesive, no secondary pollution is generated, cleaning is easy, and the mesh film can be repeatedly used.

Description

technical field [0001] The invention belongs to the technical fields of chemical engineering and functional materials, and in particular relates to a preparation method and application of an oil-water separation omentum with superhydrophilic and superoleophobic properties. Background technique [0002] In recent years, with the rapid development of industry, the scale of oilfield exploitation has been continuously expanded, and the oily wastewater generated by factory production has also been increasing. Oil-water separation has become a problem closely related to people's life, economic development and environmental protection. On the one hand, food processing, metal smelting, petrochemical, textile and other fields produce a large amount of industrial oily wastewater, which will cause very serious pollution to the environment; Seriously, this will also cause greater pollution to the marine environment. Therefore, how to achieve efficient oil-water separation has become an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022C02F1/40
CPCB01D17/0202C02F1/40
Inventor 张旭张佳王小梅
Owner HEBEI UNIV OF TECH
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