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Preparation method of super-hydrophobic plate membrane for oil-water separation

A technology of oil-water separation and superphobic, which is applied in the direction of separation methods, liquid separation, chemical instruments and methods, etc., can solve the problems of unfavorable large-scale industrial production, low strength of finished film, complicated preparation process, etc., and achieve good chemical resistance Effects of corrosion resistance, high pressure resistance, and wide application prospects

Inactive Publication Date: 2018-01-16
DALIAN UNIV OF TECH
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  • Abstract
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Problems solved by technology

At present, a variety of preparation methods for superhydrophobic surface membranes that can be used for oil-water separation have been disclosed. A preparation method of a super-lipophilic and super-hydrophobic oil-water separation membrane" (CN 105056577A), "a preparation method of a novel super-lipophilic and super-hydrophobic separation membrane" (CN 105749770A), "Superhydrophobic / superphilic Oil porous mesh and its preparation method and application” (CN 106215461A), etc., although the preparation technologies of the above-mentioned super-hydrophobic membranes have their own advantages, the existing methods for preparing super-hydrophobic membranes have special raw materials and relatively complicated preparation processes. Complicated, the base material used in the preparation is mostly screen, the strength of the finished film is not high, the pressure resistance is relatively low, and it is not conducive to large-scale industrial production and other issues

Method used

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  • Preparation method of super-hydrophobic plate membrane for oil-water separation

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Embodiment Construction

[0013] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings and technical solutions.

[0014] A method for preparing a super-hydrophobic plate membrane for oil-water separation, comprising the following steps: (1) After the stainless steel microparticle sintered porous plate is sequentially subjected to alkali washing, pickling, phosphating and passivation, the surface of the inner hole is subjected to fluorosilane Molecular self-assembly chemical modification and surface drying treatment; (2) Use a spray gun to spray the first layer of suspension onto the surface of the stainless steel micro-particle sintered porous plate, then put the stainless steel micro-particle sintered porous plate into a high-temperature furnace at 320°C, and keep the temperature constant After plasticizing for 0.5h, cool down to room temperature with the furnace; (3) Use a spray gun to spray the second layer of suspen...

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Abstract

The invention relates to a preparation method of a super-hydrophobic plate membrane for oil-water separation and belongs to the technical field of chemical separation. The preparation method is characterized in that a stainless steel microparticle sintered perforated plate is taken as a substrate, a water mixture of polyphenylene sulfide and polytetrafluoroethylene is taken as a first-layer spraysuspension, a water mixture of polytetrafluoroethylene is taken as a second-layer spray suspension, and the super-hydrophobic plate membrane for oil-water separation is prepared with a double-layer spray and high-temperature plastification method. The super-hydrophobic plate membrane for oil-water separation has the advantages of good hydrophobic and oleophilic effects, high strength, high pressure resistance and the like and further has good chemical corrosion resistance and higher oil-water separation efficiency; the preparation method is simple and convenient and has wide application prospect in the fields of petrochemicals, environmental protection and the like.

Description

technical field [0001] The invention belongs to the technical field of chemical separation, and relates to a preparation method of a superhydrophobic membrane, in particular to a preparation method of a superhydrophobic plate membrane used for oil-water separation. Background technique [0002] In recent years, some surfaces with special wettability, especially superhydrophobic-superoleophilic surfaces, have shown attractive application prospects in fields such as oil-water separation. At present, a variety of preparation methods for superhydrophobic surface membranes that can be used for oil-water separation have been disclosed. A preparation method of a super-lipophilic and super-hydrophobic oil-water separation membrane" (CN 105056577A), "a preparation method of a novel super-lipophilic and super-hydrophobic separation membrane" (CN 105749770A), "Superhydrophobic / superphilic Oil porous mesh and its preparation method and application” (CN 106215461A), etc., although the p...

Claims

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Application Information

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IPC IPC(8): B01D17/022
Inventor 于志家王宝和
Owner DALIAN UNIV OF TECH
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