CN108905295A - A kind of preparation method and application of oil-water separation mesh film - Google Patents
A kind of preparation method and application of oil-water separation mesh film Download PDFInfo
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- CN108905295A CN108905295A CN201810764080.6A CN201810764080A CN108905295A CN 108905295 A CN108905295 A CN 108905295A CN 201810764080 A CN201810764080 A CN 201810764080A CN 108905295 A CN108905295 A CN 108905295A
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- oil
- water
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- water separation
- film
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0202—Separation of non-miscible liquids by ab- or adsorption
Abstract
400 mesh red copper nets are successively cleaned by ultrasonic in acetone, absolute ethanol and deionized water, then impregnate in hydrochloric acid again by a kind of preparation method and applications of oil-water separation mesh film, remove surface film oxide, use N after cleaning2Drying.Then it is immersed in silver ammino solution, it is dry, obtain oil-water separation mesh film.The present invention in silver ammino solution by impregnating the copper mesh for removing oxidation film, micro nano structure is formed on copper mesh surface, the body structure surface is transformed into Superhydrophilic by hydrophobicity for the wellability of water, super-oleophilic is transformed by oleophobic property for the wellability of oil, so as to realize the hydrophilic function of oleophobic, because of its preferable oleophobic property and hydrophily, it can be successfully applied in water-oil separating, this oleophobic water wetted material is for having extraordinary application prospect in the preventing oil pollution and oily sewage disposal of water wetted material.
Description
Technical field
The present invention relates to a kind of preparation method and applications of oil-water separation mesh film.
Background technique
Wetability is the universal phenomenon of nature, and people derive from nature to the research of wettability.BarthlottW
Et al. discovery water droplet drop be easy to tumble in lotus leaf surface and the self_cleaning effect of lotus leaf, this phenomenon are known as super thin
Water phenomenon.Since super-hydrophobic phenomenon is found and more and more bionic super-hydrophobic surface prepares, people are also continuous
Study superoleophobic surface in ground.How a problem in superoleophobic super hydrophilic and scientific research is realized simultaneously in air.Middle section
Institute Zhang et al. is prepared for a kind of new coating material with superhydrophilic superoleophobic property using the method for spray to cast, can be to prevent
Only water-wetted surface is polluted by the oil, and can be used in water-oil separating.But the preparation condition of the coating is harsh, method is complicated, more
It is suitble to be not suitable for using glass as matrix using nethike embrane as matrix, the superoleophobic super hydrophilic material of this coating preparation of spray on nethike embrane
Material mesh is easy to block, and there is also a certain distance for the application in water-oil separating.Therefore, realize that one kind is simple, it is efficient to dredge
The hydrophilic water-oil separating film of oil is imperative.
Summary of the invention
The purpose of the present invention is to provide one kind to have in air and super hydrophilic under water while superoleophobic property under water
Oil-water separation mesh film preparation method and application.
To achieve the above object, the present invention adopts the following technical scheme that：
Then a kind of preparation method of oil-water separation mesh film is immersed in silver firstly, removing 400 mesh copper mesh surface film oxides
It is dry in ammonia solution, obtain oil-water separation mesh film.
A further improvement of the present invention lies in that the detailed process for removing 400 mesh copper mesh surface film oxides is：By 400 mesh purple
Copper mesh is successively cleaned by ultrasonic in acetone, absolute ethanol and deionized water, the dilute hydrochloric acid for being again then 3.65% in mass fraction
Middle dipping 10min removes surface film oxide, uses N after cleaning2Drying.
A further improvement of the present invention lies in that silver ammino solution is made by following procedure：0.2mL ammonium hydroxide is added dropwise to dropwise
AgNO3In solution, then ultrasonic disperse 5 minutes at 200W, obtain silver ammino solution, wherein the mass concentration of ammonium hydroxide be 25~
28%, AgNO3The concentration of solution is 0.02mol/L.
A further improvement of the present invention lies in that the time of dipping is 60~90 seconds.
A further improvement of the present invention lies in that dry temperature is 90 DEG C, the time is 3 hours.
A further improvement of the present invention lies in that triangular pyramid or cylindric is made in the oil-water separation mesh film, and in grease
Filling sponge in nethike embrane is separated, water-oil separating body is made.
Compared with prior art, the device have the advantages that：The present invention passes through the copper mesh that will remove oxidation film in silver
It is impregnated in ammonia solution, forms micro nano structure on copper mesh surface, which is turned the wellability of water by hydrophobicity
Become Superhydrophilic, super-oleophilic is transformed by oleophobic property for the wellability of oil, so as to realize the hydrophilic function of oleophobic,
Because its preferable oleophobic property and hydrophily, can be successfully applied in water-oil separating, this oleophobic water wetted material is for hydrophilic
There is extraordinary application prospect in the preventing oil pollution and oily sewage disposal of material.
The phenomenon that for a small amount of water is contained in a large amount of oil of physical presence, the oil-water separation mesh film in the present invention is wrapped up into sea
After silk floss, sponge can effectively absorb moisture, be fabricated to triangular pyramid chorista or cylindric chorista, realize in except deoiling
The purpose of actual conditions containing a small amount of moisture.The presence of triangular pyramid or cylindric chorista is also easy to salvage filtering, is convenient for
Operation under actual conditions.
Detailed description of the invention
Fig. 1 is that copper mesh surface free crosses chemical method treated scanning electron microscope (SEM) photograph (100 times of front).
Fig. 2 is copper mesh surface by chemical method treated 100 times of the scanning electron microscope (SEM) photograph in front.
Fig. 3 is copper mesh surface by chemical method treated 5k times of the scanning electron microscope (SEM) photograph in front.
Fig. 4 is copper mesh surface by chemical method treated 10k times of the scanning electron microscope (SEM) photograph in front.
Fig. 5 is the optical contact angle on water droplet copper mesh surface after handling without chemical method.
Fig. 6 is optical contact angle of the water droplet on the copper mesh surface after chemical method is handled.
Fig. 7 is the optical contact angle on oil droplet copper mesh surface after handling without chemical method
Fig. 8 is optical contact angle of the oil droplet on the copper mesh surface after chemical method is handled.
Specific embodiment
By embodiment, the present invention is described in detail with reference to the accompanying drawing.
The present invention includes the following steps：
1) 400 mesh copper mesh are successively cleaned by ultrasonic in acetone, absolute ethanol and deionized water, then use mass fraction again
Surface film oxide is removed for 3.65% dilute hydrochloric acid cleaning, uses N after cleaning2Drying；Ultrasonic cleaning instrument used is ultrasonic wave
Washer；
2) by 1.69g AgNO3It is dissolved in the deionized water of 500mL, prepares AgNO3Solution；0.2mL ammonium hydroxide is taken to drip dropwise
Enter 500mL AgNO3In solution, 200W ultrasonic disperse 5 minutes are then placed in ultrasonic cleaning machine to being completely dissolved, obtains silver-colored ammonia
Solution for later use；Wherein, ammonium hydroxide is commercially available, and mass concentration is 25~28%.
3) copper mesh treated in step 1 is put into silver ammino solution after reacting 60~90 seconds and is taken out, then existed
90 DEG C drying 3 hours, obtain oil-water separation mesh film in thermostatic drying chamber；
4) packet sponge in the oil-water separation mesh film prepared is rolled into triangle cone or cylindric, obtains water-oil separating
Body can carry out super hydrophilic/underwater superoleophobic water-oil separating.
By possessing of preparing, the chorista of super hydrophilic/underwater superoleophobic performance is put into the oil of a small amount of water, and water can be into
Enter in metal mesh pyrometric cone and in the sponge that is stored in pyrometric cone, when can be by filtering and salvaging after being sufficiently stirred
Mode takes out chorista and then separates water from oil, removes a small amount of water in deoiling to realize.
Embodiment 1
1) 400 mesh red copper nets are successively cleaned by ultrasonic in acetone, absolute ethanol and deionized water, it is then dense with quality again
Degree removes surface film oxide for 3.65% dilute hydrochloric acid cleaning, uses N after cleaning2Drying；
2) by 1.69g AgNO3It is dissolved in the deionized water of 500mL, prepares AgNO3Solution；0.2mL ammonium hydroxide is taken to drip dropwise
Enter 500mLAgNO3In solution, then the solution is placed on 200W ultrasonic disperse 5 minutes in ultrasonic cleaning machine and is obtained to being completely dissolved
To silver ammino solution, for use；Wherein, ammonium hydroxide is commercial goods, and mass concentration is 25~28%.
3) it will be taken out after the red copper net that step 1) is handled is put into silver ammino solution and is reacted 75 seconds, obtain super parent
Water/underwater superoleophobic net, and super hydrophilic/underwater superoleophobic net of preparation is placed on 90 DEG C drying 3 hours in thermostatic drying chamber, it obtains
To oil-water separation mesh film；
4) packet sponge in the oil-water separation mesh film prepared is rolled into triangular pyramid up to super hydrophilic/underwater superoleophobic oil
Moisture off-network triangular pyramid.
Fig. 1 is that copper mesh surface free crosses chemical method treated scanning electron microscope (SEM) photograph；Three figures are in Fig. 2, Fig. 3 and Fig. 4
Copper mesh surface is by chemical method treated scanning electron microscope (SEM) photograph under different multiples.Fig. 1 is formd with Fig. 2, Fig. 3, Fig. 4 and is compareed,
It can be seen that copper mesh, after chemical method is handled, surface will form micro nano structure.
Embodiment 2
1) 400 mesh red copper nets are successively cleaned by ultrasonic in acetone, absolute ethanol and deionized water, it is then dense with quality again
Degree removes surface film oxide for 3.65% dilute hydrochloric acid cleaning, uses N after cleaning2Drying；
2) by 1.69g AgNO3It is dissolved in the deionized water of 500mL, prepares AgNO3Solution；0.2mL ammonium hydroxide is taken to drip dropwise
Enter 500mL AgNO3In solution, the solution is then placed in ultrasonic cleaning machine 200W ultrasonic disperse 5 minutes to being completely dissolved,
It is stand-by to obtain silver ammino solution；
3) it will be taken out after the red copper net that step 1) is handled is put into silver ammino solution and is reacted 75 seconds, obtain super parent
Water/underwater superoleophobic net, and super hydrophilic/underwater superoleophobic net of preparation is placed on 90 DEG C drying 3 hours in thermostatic drying chamber, it obtains
To oil-water separation mesh film；
4) packet sponge in the oil-water separation mesh film prepared is rolled into triangular pyramid up to super hydrophilic/underwater superoleophobic oil
Moisture off-network triangular pyramid.
Fig. 5 is contact angle of the water droplet on the copper mesh surface handled without chemical method, and Fig. 6 is that water droplet is passing through chemistry side
The contact angle on copper mesh surface after method processing.Fig. 5 and Fig. 6 forms control, it can be seen that copper mesh after chemical method is handled,
Surface is transformed into Superhydrophilic by hydrophobicity for the wellability of water.
Embodiment 3
1) 400 mesh red copper nets are successively cleaned by ultrasonic in acetone, absolute ethanol and deionized water, it is then dense with quality again
Degree removes surface film oxide for 3.65% dilute hydrochloric acid cleaning, uses N after cleaning2Drying；
2) by 1.69g AgNO3It is dissolved in the deionized water of 500mL, prepares AgNO3Solution；0.2mL ammonium hydroxide is taken to drip dropwise
Enter 500mL AgNO3In solution, the solution is then placed in ultrasonic cleaning machine 200W ultrasonic disperse 5 minutes to being completely dissolved,
It is stand-by to obtain silver ammino solution；
3) it will be taken out after the red copper net that step 1) is handled is put into silver ammino solution and is reacted 75 seconds, obtain super parent
Water/underwater superoleophobic net, and super hydrophilic/underwater superoleophobic net of preparation is placed on 90 DEG C drying 3 hours in thermostatic drying chamber, it obtains
To oil-water separation mesh film；
4) packet sponge in the oil-water separation mesh film prepared is rolled into triangular pyramid up to super hydrophilic/underwater superoleophobic oil
Moisture off-network triangular pyramid.In step 4), the metal mesh triangular pyramid side length for being surrounded by sponge is 2cm.
Fig. 7 is contact angle of the oil droplet on the copper mesh surface handled without chemical method, and Fig. 8 is that oil droplet is passing through chemistry side
The contact angle on copper mesh surface after method processing.Fig. 7 and Fig. 8 forms control, it can be seen that copper mesh after chemical method is handled,
Surface is transformed into super-oleophilic by oleophobic property for the wellability of oil.
Embodiment 4
1) 400 mesh red copper nets are successively cleaned by ultrasonic in acetone, absolute ethanol and deionized water, it is then dense with quality again
Degree removes surface film oxide for 3.65% dilute hydrochloric acid cleaning, uses N after cleaning2Drying；
2) by 1.69g AgNO3It is dissolved in the deionized water of 500mL, prepares AgNO3Solution；0.2mL ammonium hydroxide is taken to drip dropwise
Enter 500mL AgNO3In solution, the solution is then placed in ultrasonic cleaning machine 200W ultrasonic disperse 5 minutes to being completely dissolved,
It is stand-by to obtain silver ammino solution；
3) it will be taken out after the red copper net that step 1) is handled is put into silver ammino solution and is reacted 60 seconds, obtain super parent
Water/underwater superoleophobic net, and super hydrophilic/underwater superoleophobic net of preparation is placed on 90 DEG C drying 3 hours in thermostatic drying chamber, it obtains
To oil-water separation mesh film；
4) packet sponge in the oil-water separation mesh film prepared is rolled into cylindric up to super hydrophilic/underwater superoleophobic grease
The cylindric chorista of separate mesh.
Embodiment 5
1) 400 mesh red copper nets are successively cleaned by ultrasonic in acetone, absolute ethanol and deionized water, it is then dense with quality again
Degree removes surface film oxide for 3.65% dilute hydrochloric acid cleaning, uses N after cleaning2Drying；
2) by 1.69g AgNO3It is dissolved in the deionized water of 500mL, prepares AgNO3Solution；0.2mL ammonium hydroxide is taken to drip dropwise
Enter 500mL AgNO3In solution, the solution is then placed in ultrasonic cleaning machine 200W ultrasonic disperse 5 minutes to being completely dissolved,
It is stand-by to obtain silver ammino solution；
3) it will be taken out after the red copper net that step 1) is handled is put into silver ammino solution and is reacted 90 seconds, obtain super parent
Water/underwater superoleophobic net, and super hydrophilic/underwater superoleophobic net of preparation is placed on 90 DEG C drying 3 hours in thermostatic drying chamber, it obtains
To oil-water separation mesh film；
4) packet sponge in the oil-water separation mesh film prepared is rolled into cylindric up to super hydrophilic/underwater superoleophobic grease
Separate mesh triangular pyramid.
Red copper net can also be first prepared into triangular prism shape or cylindric in the present invention, then carry out step 1)-step 4)
Process.
The oil water mixture for being mixed with a small amount of water is contained in beaker, by the metal mesh triangular pyramid sequential Stereoscopic of above-mentioned preparation
Or cylindrical body is put into mixture, and metal mesh triangular pyramid is salvaged mixing liquid after being sufficiently stirred, discovery water enters gold
Belong in net triangular pyramid and be drawn into sponge, realizes the purpose except water a small amount of in deoiling.The present invention is by the way that first copper mesh is made
Metal mesh triangular pyramid is cylindric, its surface is then being made to hydrophilic and oleophobic performance with the method for chemistry, realization is dredged
The preparation of oily water wetted material, because its preferable oleophobic property and hydrophily, that is, super hydrophilic/underwater superoleophobic performance, can successfully answer
This oleophobic water wetted material in the preventing oil pollution and oily sewage disposal of water wetted material for having very in water-oil separating
Good application prospect.And the phenomenon that for a small amount of water is contained in a large amount of oil of physical presence, the trigone made using such nethike embrane
Cone cell or cylindric chorista can effectively absorb moisture, be also easy to salvage filtering, convenient for the operation under actual conditions.
Claims (6)
1. a kind of preparation method of oil-water separation mesh film, which is characterized in that firstly, removing 400 mesh copper mesh surface film oxides, then
It is immersed in silver ammino solution, it is dry, obtain oil-water separation mesh film.
2. a kind of preparation method of oil-water separation mesh film according to claim 1, which is characterized in that remove 400 mesh copper mesh
The detailed process of surface film oxide is：400 mesh red copper nets are successively cleaned by ultrasonic in acetone, absolute ethanol and deionized water,
Then 10min is impregnated in the dilute hydrochloric acid that mass fraction is 3.65% again, surface film oxide is removed, uses N after cleaning2Drying.
3. a kind of preparation method of oil-water separation mesh film according to claim 1, which is characterized in that silver ammino solution by with
Lower process is made：0.2mL ammonium hydroxide is added dropwise to AgNO dropwise3In solution, then ultrasonic disperse 5 minutes at 200W, obtain silver
Ammonia solution, wherein the mass concentration of ammonium hydroxide is 25~28%, AgNO3The concentration of solution is 0.02mol/L.
4. a kind of preparation method of oil-water separation mesh film according to claim 1, which is characterized in that the time of dipping is 60
~90 seconds.
5. a kind of preparation method of oil-water separation mesh film according to claim 1, which is characterized in that dry temperature is 90
DEG C, the time is 3 hours.
6. the application for the oil-water separation mesh film that the method according to claim 11 is prepared, which is characterized in that by the grease
Triangular pyramid or cylindric, and the filling sponge in oil-water separation mesh film is made in separation nethike embrane, and water-oil separating body is made.
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| CN111675281A (en) * | 2020-07-02 | 2020-09-18 | 安阳工学院 | Preparation method of copper-based underwater super-oleophobic net |
| CN111686478A (en) * | 2020-06-30 | 2020-09-22 | 成都大学 | Carbon foam membrane material for oil-water emulsion separation, preparation method and application |
| CN114682099A (en) * | 2022-03-25 | 2022-07-01 | 湖北大学 | Preparation method and application of Janus film material for realizing oil-water on-demand separation |
| US11413609B2 (en) * | 2020-12-15 | 2022-08-16 | Southwest Petroleum University | Photocatalytic oil-water separation material and preparation method thereof |
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