CN109821425A - A kind of superhydrophilic superoleophobic metal mesh and preparation method thereof - Google Patents

A kind of superhydrophilic superoleophobic metal mesh and preparation method thereof Download PDF

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Publication number
CN109821425A
CN109821425A CN201910183412.6A CN201910183412A CN109821425A CN 109821425 A CN109821425 A CN 109821425A CN 201910183412 A CN201910183412 A CN 201910183412A CN 109821425 A CN109821425 A CN 109821425A
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metal mesh
metal
superhydrophilic superoleophobic
preparation
superhydrophilic
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CN109821425B (en
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余金海
丁亚塞
王玉堃
张安将
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ZHEJIANG JINLONG AUTO CONTROL EQUIPMENT CO Ltd
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ZHEJIANG JINLONG AUTO CONTROL EQUIPMENT CO Ltd
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Abstract

The invention discloses a kind of superhydrophilic superoleophobic metal meshes and preparation method thereof, wherein, superhydrophilic superoleophobic metal mesh includes metal mesh, metal mesh includes that the plane net of top layer is arranged in and is successively set below plane net four layers knit shape net, the outer surface of metal mesh is equipped with metal oxide layer, and the outer surface of metal oxide layer is attached with hydrophilic and oleophobic surface layer.The present invention, in the outer surface of metal mesh, metal oxide layer is set, hydrophilic and oleophobic surface layer is adhered in the outer surface of metal oxide layer, preparation process is simple, time-consuming short, at low cost, the superhydrophilic superoleophobic metal mesh separative efficiency of preparation is high, membrane flux is big, stain resistance is strong, has good chemical stability and mechanical stability, increases service life, have the advantages that simultaneously wider to the adaptability of water quality, one times of backwash and regeneration cycle stretch-out, membrane flux can restore 100% after backwash, and power of regeneration is good, film maintenance and replacement cost are reduced, economic serviceability is improved.

Description

A kind of superhydrophilic superoleophobic metal mesh and preparation method thereof
Technical field
The present invention relates to metal technical field of membrane, and in particular to a kind of superhydrophilic superoleophobic metal mesh and preparation method thereof.
Background technique
Currently, most of oil field in China uses secondary oil recovery (or tertiary oil recovery) technique, generated after crude oil dehydration a large amount of Oily waste water is usually passed through advanced treating, reached back by oil field waste to guarantee the continuous high yield of individual well and stable earth formation Water is improved to increase stratum energy to underground re-injection and produces efficiency, while reducing pollution with high-pressure pump after infusing water supply standard, Water resource is saved, and oiliness sewage treatment mainly uses floating method, bioanalysis, centrifugal separation and membrane processing method etc..
Wherein, for membrane processing method because with high-efficient, equipment is small, and consumption is few, easy to operate, it is easy to accomplish automation control System is easy to the advantages that commercial scale uses, and more and more extensive use is obtained in oil field produced water process, and water outlet can be used as oil Field reinjected water has huge social and economic benefits and good broad prospect of application.But membrane processing method in the prior art is used The generally existing following defect of metal film:
(1) metal film contamination resistance is poor, and effluent quality cannot be met the requirements, and causes Membrane cleaning frequent, film power of regeneration Difference causes film process higher operating costs;
(2) extension in use at any time, membrane flux gradually decrease, and water yield constantly reduces, metal film replacement Frequently, increase cost;
(3) manufacturing process is complex, the time is long, at high cost, and obtained metal membrane stability is poor.
In view of this, be badly in need of existing metal film and its manufacturing method are improved, simplify manufacturing process, reduce at This, the good metal film of stability can be obtained, while increasing the antipollution and film power of regeneration of metal film, reduce film maintenance and Replacement cost improves economic serviceability.
Summary of the invention
The technical problem to be solved by the present invention is to existing metal film and its manufacturing method, that there are manufacturing processes is more multiple Miscellaneous, at high cost, the antipollution and film power of regeneration of obtained metal membrane stability difference and metal film are poor, film maintenance and more Change this higher problem into.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that providing a kind of superhydrophilic superoleophobic metal Net, the metal mesh include that the plane net of top layer is arranged in and is successively set below the plane net four layers knit shape net, The outer surface of the metal mesh is equipped with metal oxide layer, and the outer surface of the metal oxide layer is attached with hydrophilic and oleophobic table Layer.
In the above scheme, shape net is knitted described in every layer to be made of two rows of wavy steel wires and row's straight wire, it is two rows of The wavy steel wire staggered relative setting, makes its middle part form the gap being inserted into for straight wire.
In the above scheme, the metal mesh uses stainless steel material.
In the above scheme, the aperture of the metal mesh is greater than or equal to 5 μm.
The present invention also provides a kind of preparation methods of superhydrophilic superoleophobic metal mesh, comprising the following steps:
Metal mesh is cleaned by ultrasonic, removes after surface is organic and inorganic pollution and dries;
Weigh a certain amount of FeCl3.6H2O is added deionized water dissolving, sequentially adds strong acid, H2O2, it is configured to etch Liquid;
A certain amount of ethyl alcohol, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride solution, crosslinking agent and photoinitiator is weighed to match It is set to modification liquid;
The metal mesh of drying is invaded in configured etching liquid, is taken out after impregnating 1~10min, is cleaned, drying;
Metal mesh after etching is immersed in configured modification liquid, takes out drying after impregnating 1~10min;
Metal mesh after modified drying is placed into illumination in the UV lamp and for a period of time, obtains superhydrophilic superoleophobic metal Net.
In the above scheme, the metal mesh successively uses deionized water, acetone, ethyl alcohol, deionized water to carry out ultrasound clearly It washes.
In the above scheme, the crosslinking agent uses trimethylolpropane trimethacrylate.
In the above scheme, the photoinitiator uses -2 propyl propiophenone of 2- hydroxyl.
Compared with prior art, metal oxide layer is arranged in the outer surface of metal mesh in the present invention, metal oxide layer Hydrophilic and oleophobic surface layer is adhered in outer surface, and preparation process is simple, time-consuming short, at low cost, the superhydrophilic superoleophobic metal mesh point of preparation From high-efficient, membrane flux is big, and stain resistance is strong, has good chemical stability and mechanical stability, increases service life, together When, has the advantages that wider to the adaptability of water quality, and one times of backwash and regeneration cycle stretch-out, membrane flux can restore 100% after backwash, Power of regeneration is good, reduces film maintenance and replacement cost, improves economic serviceability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of metal mesh of the invention;
Fig. 2 is the structural schematic diagram of superhydrophilic superoleophobic metal mesh of the invention;
Fig. 3 is that the SEM of unmodified preceding metal net surface schemes;
Fig. 4 is the schematic diagram of the contact angle of unmodified preceding metal mesh and water;
Fig. 5 is the SEM figure after metal mesh surface etch of the invention;
Fig. 6 is that the SEM of superhydrophilic superoleophobic metal net surface of the invention schemes.
Specific embodiment
The present invention provides a kind of superhydrophilic superoleophobic metal meshes and preparation method thereof, and preparation process is simple, time-consuming short, at This is low, and the superhydrophilic superoleophobic metal mesh separative efficiency of preparation is high, and membrane flux is big, and stain resistance is strong, has good chemistry steady Qualitative and mechanical stability increases service life, while having the advantages that wider to the adaptability of water quality.Below with reference to specification The drawings and specific embodiments are described in detail the present invention.
As depicted in figs. 1 and 2, a kind of superhydrophilic superoleophobic metal mesh provided by the invention, metal mesh 10 include that setting exists The plane net of top layer and be successively set below plane net four layers knit shape net, and the outer surface of metal mesh 10 is aoxidized equipped with metal Nitride layer 20, the outer surface of metal oxide layer 20 are attached with hydrophilic and oleophobic surface layer 30.
Ground is advanced optimized, as shown in Figure 1, every layer is knitted shape net by two rows of wavy steel wires and row's straight wire group At two rows of wavy steel wire staggered relative settings make its middle part form the gap being inserted into for straight wire.
The present invention can form metal oxide layer 20 on the surface of metal mesh 10 by oxidizing process, and metal oxide is received Rice coarse structure surface energy with higher, hydrophilic and oleophobic characteristic is presented in the infiltration of the surface water electrode Yi Qi, under the state, water Can be by nethike embrane, and oils cannot be by the nethike embrane, to realize the water-oil separating of oil water mixture.In order to increase metal mesh Metal mesh 10 after oxidation can be immersed in modification liquid by 10 hydrophilic and oleophobic characteristic, make its periphery attachment hydroaropic substance simultaneously Hydrophilic and oleophobic surface layer 30 is formed, hydrophilic and oleophobic effect is further increased.
The present invention, 10 separative efficiency of superhydrophilic superoleophobic metal mesh is high, and membrane flux is big, and stain resistance is strong, has good Chemical stability and mechanical stability increase service life, while having the advantages that, backwash and regeneration wider to the adaptability of water quality One times of cycle stretch-out, membrane flux can restore 100% after backwash, and power of regeneration is good, reduce film maintenance and replacement cost, improve economical Applicability.
As shown in Figure 1, metal mesh 10 of the invention belongs to five layered networks of standard, it is a kind of by five layers of stainless steel cloth It is stacked together in order, by a kind of novel filter material made of vacuum-sintering, this kind of design method makes plane net form At protective layer 11, knits shape net for four layers and be from top to bottom respectively formed filter layer 12, dispersion layer 13, support rib rack-layer 14 and casing play 15。
This kind of metal mesh 10 has the advantage that
(1) there is high mechanical strength and compressive resistance, processing, welding are good with assembling property, easy to use;
(2) filter layer 12 makes it obtain good protection and shunting in the second layer, and filtering accuracy can reach uniform one The strainability of cause guarantees it with high stability;
(3) 316L material is selected, good corrosion resistance is heat-resist, can be used for -200 DEG C~480 DEG C of temperature and soda acid ring The filtering in border, use scope are wide;
(4) the both surface filtration structure of splendid backwash effect, so backwash effect is good, can Reusability, the longevity Life length.
Ground is advanced optimized, metal mesh 10 uses stainless steel material, and the aperture of metal mesh 10 is greater than or equal to 5 μm.
The present invention also provides a kind of preparation methods of superhydrophilic superoleophobic metal mesh 10, comprising the following steps:
Metal mesh 10 is cleaned by ultrasonic by step 1, removes after surface is organic and inorganic pollution and dries;Specifically, Metal mesh 10 is successively cleaned by ultrasonic using deionized water, acetone, ethyl alcohol, deionized water.
Step 2 weighs a certain amount of FeCl3.6H2O is added deionized water dissolving, sequentially adds strong acid, H2O2, configuration At etching liquid.
Step 3 weighs a certain amount of ethyl alcohol, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride solution, crosslinking agent and light and draws Hair agent is configured to modification liquid, obtains hydroaropic substance.Specifically, crosslinking agent uses trimethylolpropane trimethacrylate, and light draws It sends out agent and uses -2 propyl propiophenone of 2- hydroxyl.
Step 4, as shown in figure 5, the metal mesh 10 of drying is invaded in configured etching liquid, after impregnating 1~10min It takes out, cleans, drying;During being somebody's turn to do, so that the surface of metal mesh 10 forms metal oxide layer 20, due to metal oxide So that the surface water electrode Yi Qi infiltrates hydrophilic and oleophobic characteristic is presented, the state in nanometer coarse structure surface energy with higher Under, water can be by nethike embrane, and oils cannot be by the nethike embrane, to realize the water-oil separating of oil water mixture.
Step 5 impregnates 1~10min as shown in fig. 6, the metal mesh 10 after etching is immersed in configured modification liquid Drying is taken out afterwards;During being somebody's turn to do, so that the surface of metal mesh 10 forms hydrophilic and oleophobic surface layer 30, the hydrophilic of metal mesh 10 is increased Oleophobic property.
Metal mesh 10 after modified drying is placed illumination in the UV lamp for a period of time by step 6, is obtained super hydrophilic super Oleophobic metal mesh 10 can increase the stability of metal mesh 10 using the cured mode of ultraviolet light, and it is steady to make it have good chemistry Qualitative and mechanical stability increases service life.
As shown in figure 3, common metal net surface adheres to more water, it can be seen that the hydrophilic and oleophobic characteristic of this kind of metal mesh It is poor, it is unfavorable for the separation of grease, water rate and effluent quality cannot be met the requirements.As shown in figure 4, metal mesh connects water Feeler is about 94 °, is unfavorable for water across metal mesh, reduces water rate.
The present invention can prepare superhydrophilic superoleophobic metal mesh 10 by simple oxidation reaction and cross-linking reaction, have system Standby process is simple, time-consuming short, at low cost advantage.As shown in Figure 5 and Figure 6, the superhydrophilic superoleophobic metal nethike embrane being prepared Flux is big, and surface with higher energy, and hydrophilic and oleophobic characteristic is presented, and under the state, water can in the infiltration of the surface water electrode Yi Qi To pass through nethike embrane, and oils cannot increase the hydrophilic of metal mesh by the nethike embrane, to realize the water-oil separating of oil water mixture Fuel shedding quality, increase water-oil separating efficiency is higher, meets the requirement of effluent quality.
The invention is not limited to above-mentioned preferred forms, and anyone should learn that is made under the inspiration of the present invention Structure change, the technical schemes that are same or similar to the present invention are fallen within the scope of protection of the present invention.

Claims (8)

1. a kind of superhydrophilic superoleophobic metal mesh, which is characterized in that the metal mesh include be arranged in top layer plane net and It is successively set on four below the plane net layers and knits shape net, the outer surface of the metal mesh is equipped with metal oxide layer, described The outer surface of metal oxide layer is attached with hydrophilic and oleophobic surface layer.
2. a kind of superhydrophilic superoleophobic metal mesh according to claim 1, which is characterized in that knitted described in every layer shape net by Two rows of wavy steel wires and row's straight wire composition, two rows of wavy steel wire staggered relative settings, form its middle part For the gap of straight wire insertion.
3. a kind of superhydrophilic superoleophobic metal mesh according to claim 1, which is characterized in that the metal mesh is using stainless Steel material.
4. a kind of superhydrophilic superoleophobic metal mesh according to claim 1, which is characterized in that the aperture of the metal mesh is big In or equal to 5 μm.
5. a kind of preparation method of superhydrophilic superoleophobic metal mesh, which comprises the following steps:
Metal mesh is cleaned by ultrasonic, removes after surface is organic and inorganic pollution and dries;
Weigh a certain amount of FeCl3.6H2O is added deionized water dissolving, sequentially adds strong acid, H2O2, it is configured to etching liquid;
A certain amount of ethyl alcohol, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride solution, crosslinking agent and photoinitiator is weighed to be configured to Modification liquid;
The metal mesh of drying is invaded in configured etching liquid, is taken out after impregnating 1~10min, is cleaned, drying;
Metal mesh after etching is immersed in configured modification liquid, takes out drying after impregnating 1~10min;
Metal mesh after modified drying is placed into illumination in the UV lamp and for a period of time, obtains superhydrophilic superoleophobic metal mesh.
6. a kind of preparation method of superhydrophilic superoleophobic metal mesh according to claim 5, which is characterized in that the metal Net successively uses deionized water, acetone, ethyl alcohol, deionized water to be cleaned by ultrasonic.
7. a kind of preparation method of superhydrophilic superoleophobic metal mesh according to claim 5, which is characterized in that the crosslinking Agent uses trimethylolpropane trimethacrylate.
8. a kind of preparation method of superhydrophilic superoleophobic metal mesh according to claim 5, which is characterized in that the light draws It sends out agent and uses -2 propyl propiophenone of 2- hydroxyl.
CN201910183412.6A 2019-03-12 2019-03-12 Super-hydrophilic super-oleophobic metal net and preparation method thereof Active CN109821425B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111228894A (en) * 2020-03-11 2020-06-05 金碳环境科技(天津)有限公司 Metal net for water treatment
CN114377435A (en) * 2022-01-18 2022-04-22 中国石油大学(华东) Preparation method of super-durable oil-water separation net

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US20130264287A1 (en) * 2011-09-28 2013-10-10 Lianbin Zhang Grafted membranes and substrates having surfaces with switchable superoleophilicity and superoleophobicity and applications thereof
US20140190352A1 (en) * 2013-01-10 2014-07-10 Massachusetts Institute Of Technology Liquid collecting permeable structures
CN105268326A (en) * 2015-09-30 2016-01-27 西南交通大学 Preparation of oil-water separation mesh membrane and surface wettability conversion method thereof
WO2018026328A1 (en) * 2016-08-04 2018-02-08 Nanyang Technological University Multifunctional superhydrophilic and underwater superoleophobic activated glass derived from waste glass
CN109107226A (en) * 2018-08-27 2019-01-01 大连理工大学 A kind of metal mesh for oil-water separation preparation method that wetability is controllable
KR20190014712A (en) * 2017-08-03 2019-02-13 한국과학기술연구원 Oil-water separation structure, method for preparing the same, and oil-water separation method using the same
CN109381893A (en) * 2017-08-03 2019-02-26 中国科学院苏州纳米技术与纳米仿生研究所 A kind of super hydrophilic oleophobic material, preparation method and application
CN209985222U (en) * 2019-03-12 2020-01-24 浙江金龙自控设备有限公司 Super-hydrophilic super-oleophobic metal net

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130264287A1 (en) * 2011-09-28 2013-10-10 Lianbin Zhang Grafted membranes and substrates having surfaces with switchable superoleophilicity and superoleophobicity and applications thereof
US20140190352A1 (en) * 2013-01-10 2014-07-10 Massachusetts Institute Of Technology Liquid collecting permeable structures
CN105268326A (en) * 2015-09-30 2016-01-27 西南交通大学 Preparation of oil-water separation mesh membrane and surface wettability conversion method thereof
WO2018026328A1 (en) * 2016-08-04 2018-02-08 Nanyang Technological University Multifunctional superhydrophilic and underwater superoleophobic activated glass derived from waste glass
KR20190014712A (en) * 2017-08-03 2019-02-13 한국과학기술연구원 Oil-water separation structure, method for preparing the same, and oil-water separation method using the same
CN109381893A (en) * 2017-08-03 2019-02-26 中国科学院苏州纳米技术与纳米仿生研究所 A kind of super hydrophilic oleophobic material, preparation method and application
CN109107226A (en) * 2018-08-27 2019-01-01 大连理工大学 A kind of metal mesh for oil-water separation preparation method that wetability is controllable
CN209985222U (en) * 2019-03-12 2020-01-24 浙江金龙自控设备有限公司 Super-hydrophilic super-oleophobic metal net

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111228894A (en) * 2020-03-11 2020-06-05 金碳环境科技(天津)有限公司 Metal net for water treatment
CN114377435A (en) * 2022-01-18 2022-04-22 中国石油大学(华东) Preparation method of super-durable oil-water separation net

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