Method for preparing super-hydrophobic super-oleophilic porous material

A porous material, super lipophilic technology, applied in separation methods, chemical instruments and methods, immiscible liquid separation, etc., can solve the problems of long production cycle, complex preparation methods, etc., achieve short consumption time, simple and economical methods, The effect of convenient operation

Inactive Publication Date: 2015-05-13
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a superhydrophobic and superoleophilic porous material, which can solve the problems of complex preparation methods and long production cycles of existing oil-water separation materials

Method used

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  • Method for preparing super-hydrophobic super-oleophilic porous material
  • Method for preparing super-hydrophobic super-oleophilic porous material
  • Method for preparing super-hydrophobic super-oleophilic porous material

Examples

Experimental program
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Effect test

Embodiment 1

[0036] The preparation of superhydrophobic superlipophilic sponge, the steps are as follows:

[0037] 1) Cleaning of polyurethane sponge: pour acetone into a beaker (acetone mass fraction ≥ 99.5%), and polyurethane sponge (its surface features such as figure 1 , the size is 10mm×10mm×0.3mm) into acetone, put the beaker into the ultrasonic device and ultrasonically clean it for 15-30 minutes, wash away the stains and grease impurities on the surface of the sponge, pour off the acetone, pour the acetone into the beaker again, Ultrasonic cleaning for 15 to 30 minutes, pour out acetone, pour in deionized water, stir, pour out deionized water to rinse off the acetone in the beaker and sponge, and finally dry the polyurethane sponge for later use;

[0038] 2) configuration of chromic acid lotion: measure 45ml deionized water, take by weighing 3g potassium dichromate and pour it into deionized water, then measure 5ml concentrated sulfuric acid (the mass fraction of sulfuric acid is 9...

Embodiment 2-6

[0042] The amount of concentrated sulfuric acid was adjusted to measure 6ml, 7ml, 8ml, 9ml, 10ml in turn, and the others were the same as in Example 1.

Embodiment 7-9

[0044] Soak the polyurethane sponge in the chromic acid lotion for 15s, 20s, and 40s in turn, and the others are the same as in Example 1.

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Abstract

The invention belongs to the technical field of functional materials and in particular relates to a method for preparing a super-hydrophobic super-oleophilic porous material. The method comprises the following steps: etching clean a polyurethane sponge by adopting chromic acid cleaning solution, and loading polytetrafluoroethylene on the surface of the polyurethane sponge by adopting a rubbing method, thereby obtaining the super-hydrophobic super-oleophilic porous material. The invention provides a non-chemical, environment-friendly and convenient method for loading low-surface-energy substances, and the method is simple in process, convenient to operate, low in time consumption, simple and economical. The contact angle between the obtained material and water is larger than 150 degrees, the contact angle between the obtained material and oil is 0 degree, and the material has wide application prospects in the fields of cleaning of oil pollution in water, industrial oil-water separation and cleaning of organic matter leakage.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a preparation method of a superhydrophobic and superoleophilic porous material. Background technique [0002] Due to their unique interfacial properties, hydrophobic and lipophilic materials can separate oil and water in accidents such as oil pollution and organic leakage, so they have broad application prospects. The hydrophobic solid surface can be obtained by controlling two factors, one is to reduce the surface energy of the solid surface, and the other is to make the solid surface present a microscopic rough structure. [0003] Researchers are currently developing a variety of substrates that can be further modified to achieve oil-water separation. Such as stainless steel mesh (Lin Feng, Angew. Chem. 2004, 43, 2012-2014), textiles (Chaohua Xue, Appl. Surf. Sci. 2013, 284, 464-471), carbon nanotube sponge (Xuchun Gui, Adv.Mater.2010, 22, 617-621) et...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022C08J9/36
CPCB01D17/02C08J9/36C08J2375/04
Inventor 许群刘若晨刘威王天娇
Owner ZHENGZHOU UNIV
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