CN114561039B - Preparation method of polysiloxane modified super-hydrophobic sponge for oil-water separation - Google Patents
Preparation method of polysiloxane modified super-hydrophobic sponge for oil-water separation Download PDFInfo
- Publication number
- CN114561039B CN114561039B CN202210237603.8A CN202210237603A CN114561039B CN 114561039 B CN114561039 B CN 114561039B CN 202210237603 A CN202210237603 A CN 202210237603A CN 114561039 B CN114561039 B CN 114561039B
- Authority
- CN
- China
- Prior art keywords
- sponge
- hydrophobic
- oil
- modified
- super
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
- C08J9/40—Impregnation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
- C08J9/40—Impregnation
- C08J9/42—Impregnation with macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08J2361/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C08J2361/28—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with melamine
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/204—Keeping clear the surface of open water from oil spills
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a preparation method of polysiloxane modified super-hydrophobic sponge for oil-water separation, and belongs to the technical field of functional material preparation and application. The invention uses proper amount of hydrophobic gas phase nano SiO 2 Dispersing into a solution of hydroxyl-terminated polydimethylsiloxane and tetraethoxysilane, and preparing the super-hydrophobic melamine sponge by an impregnation method, wherein the super-hydrophobic melamine sponge has a good pore structure and hydrophobic and oleophylic properties. When used for oil-water separation, the anti-compression performance and the recycling performance are excellent. The method has the advantages of simple and convenient process, low cost, no toxicity or harm to main raw materials, environmental protection, commercial industrial products, easy realization of large-scale production and wide application prospect in separation and recovery of oil-containing or organic solvent and water mixture.
Description
Technical Field
The invention relates to a preparation method of polysiloxane modified super-hydrophobic sponge for oil-water separation, belonging to the technical field of functional material preparation and application.
Background
With the development of petrochemical industry, oil spilling accidents in the ocean frequently occur, and adverse effects are caused on natural environment and human life. Therefore, the development of a convenient and effective oil absorbing material is urgent. Three-dimensional porous materials with ultra-large internal space are one of candidates for oil-water separation materials, such as high molecular materials, carbonaceous fibers, graphene, tobacco ash, aerogel, and the like. The preparation of most of the hydrophobic and oleophilic porous materials has the problems of high cost, high energy consumption and complex production process.
Currently, melamine sponges with high porosity, low density, elasticity, and low cost are available for absorption of oil phases or organic liquids by hydrophobicization modification. The common melamine sponge has oil-water amphipathy, and can be made to have hydrophobic and oleophilic properties by introducing low-surface-energy substances, increasing surface roughness and other modification modes. In general, the introduction of the low surface energy material can realize the aim of leading the sponge framework to have good hydrophobic and oleophilic properties, and meanwhile, a proper amount of nano particles can increase the surface roughness of the sponge framework and enhance the oil-water separation capacity of the sponge. CN201810372973.6 discloses a preparation method of flame-retardant super-hydrophobic melamine sponge, which comprises sequentially placing the sponge in a tris (hydroxymethyl) aminomethane solution containing silica particles, tannic acid and silver nitrate and an ethanol solution of perfluorododecanethiol to obtain the super-hydrophobic sponge. The method has complex process and is not beneficial to environmental protection due to the introduction of fluorine-containing substances. CN201910955095.5 discloses a simple method for modifying melamine sponge by superhydrophobic method, wherein commercial melamine sponge is immersed in nitric acid solution in one step, and then washed and dried simply to realize superhydrophobic modification of amphiphilic melamine sponge. The method is simple and easy to implement, but the introduction of the strong oxidant brings experimental risks, and the heat resistance and mechanical stability of the sponge after oxidation etching are reduced. Therefore, development of a method for preparing the super-hydrophobic and oleophylic sponge by modification, which has the advantages of environment friendliness, simplicity, convenience, low cost, easiness in realization of large-scale production and the like, is urgently needed.
Disclosure of Invention
Aiming at the problems and the defects existing in the prior art, the invention provides a simple, convenient and low-cost method for preparing the super-hydrophobic and oleophylic sponge with high adsorption capacity, good physical and chemical stability and easy realization of large-scale production.
In order to solve the technical problems, a first object of the present invention is to provide a method for preparing a modified superhydrophobic sponge. The technical scheme adopted comprises the following steps:
step one, cutting the commercially available melamine sponge into blocks, washing and drying for later use.
Step two,Dissolving hydroxyl-terminated polydimethylsiloxane, ethyl orthosilicate and dibutyltin dilaurate in n-hexane, and adding hydrophobic gas phase nano SiO 2 After ultrasonic dispersion, stirring on a magnetic stirrer to obtain PDMS/SiO 2 And (3) compounding the solution.
Step three, completely immersing the pretreated sponge in PDMS/SiO 2 And (3) taking out the composite solution after a period of time, and solidifying and drying the composite solution in an oven to obtain the super-hydrophobic oleophylic sponge.
Further, the commercial melamine sponge has the characteristics of low cost, light weight, strong adsorption, good mechanical property and the like, the porosity is 98-99%, and the density is 7-10 kg/m 3 。
Further, the hydroxyl-terminated polydimethylsiloxane is commercially available and industrially pure, has stable chemical properties and has a viscosity (25 ℃) of 5000-50000mpa.s, and is colorless and transparent flowing liquid.
Further, the washing in the first step is performed by adopting deionized water and ethanol for washing for a plurality of times.
Further, the hydrophobic gas phase nano SiO 2 The addition amount is 0.3-0.5 of the total mass of the hydroxyl-terminated polydimethylsiloxane and the tetraethoxysilane. Wherein, hydrophobic gas phase nano SiO 2 The comprehensive performance is optimal when the addition amount is 0.3 of the total mass of the hydroxyl-terminated polydimethylsiloxane and the tetraethoxysilane.
Further, the mass ratio of the hydroxyl-terminated polydimethylsiloxane to the ethyl orthosilicate is 5:1.
Further, the dibutyl tin dilaurate is used as a catalyst, and the mass ratio of the dibutyl tin dilaurate to the total mass of the hydroxyl-terminated polydimethylsiloxane and the tetraethoxysilane is 1:60-1:30. The catalyst is used in small amount and reacts too slowly, the catalyst is used in large amount and reacts too fast to be coated, and the catalyst remains.
Further, the ultrasonic time is 10-20 min, the stirring time is 20-40 min, and the soaking time is 20-40 min.
Further, the drying temperature is 25-65 ℃.
The second object of the present invention is to provide a modified superhydrophobic sponge prepared according to the above-described method.
The third object of the invention is to provide an oil-water separation method, which is to utilize the modified super-hydrophobic sponge as an adsorbent for adsorption.
Further, the oil in the oil-water separation can be any one or more of toluene, methylene dichloride, n-hexane, petroleum ether and corn oil.
Further, in the oil-water separation method, the modified super-hydrophobic sponge adsorbed with oil is extruded, the adsorbed oil is discharged, and then the modified super-hydrophobic sponge is recycled.
The fourth object of the invention is to provide the application of the modified super-hydrophobic sponge in separation and recovery of oil-containing or organic solvent and water mixture.
Further, the separation and recovery may be performed in a high temperature environment, such as a high temperature environment below 300 ℃.
Further, the separation and recovery may be performed in a salt-containing environment, such as 10 to 50% sodium chloride.
Further, the application comprises recycling the modified super-hydrophobic sponge.
The invention has the advantages and effects that:
the invention uses proper amount of hydrophobic gas phase nano SiO 2 Dispersing into a solution of hydroxyl-terminated polydimethylsiloxane and tetraethoxysilane, soaking the sponge, and curing to obtain the modified melamine sponge. The invention effectively controls the hydrophobic gas phase nano SiO 2 The addition amount is 0.3 of the total mass of the hydroxyl-terminated polydimethylsiloxane and the tetraethoxysilane, and the high-performance super-hydrophobic sponge is obtained.
The super-hydrophobic melamine sponge prepared by the method has the following characteristics:
(1) The thermal stability is excellent: the temperature of the modified sponge is about 300 ℃ when the mass loss of the modified sponge is 5%, and the obvious weight loss temperature is about 380 ℃;
(2) Excellent compression resistance: the extrusion test result shows that the original appearance of the material is maintained after the material is repeatedly extruded for 100 times, and the water contact angle is still maintained at about 150 degrees;
(3) The weather resistance is good: the modified sponge keeps stable hydrophobicity in seawater with different concentrations simulated by 10 to 50 per mill sodium chloride solution;
(4) The adsorption capacity to organic matters is strong: the modified sponge had oil absorption K values of 68, 83, 42, 40 and 56 for toluene, methylene chloride, n-hexane, petroleum ether, and corn oil, respectively.
(5) The recycling stability is good: after 10 adsorption and extrusion cycles, the absorption capacity of the modified sponge for various oils is basically unchanged.
In addition, the super-hydrophobic modification process is simple, convenient and low in cost, the main raw materials are nontoxic and harmless, the super-hydrophobic modification process is green and environment-friendly, is a commercial industrial product, is easy to realize large-scale production, and has wide application prospects in separation and recovery of oil-containing or organic solvent and water mixtures.
Drawings
FIG. 1 is a graph showing the water contact angle of the modified sponge according to example 1 of the present invention.
FIG. 2 is a scanning electron microscope image before and after modification of the modified sponge prepared in example 1 of the present invention; wherein, fig. 2A is an unmodified sponge, and fig. 2B is a modified sponge.
FIG. 3 is a thermogravimetric plot of the modified sponge of example 1 of the present invention;
FIG. 4 is a graph showing the hydrophobic and lipophilic properties of the modified sponge according to example 1 of the present invention;
FIG. 5 is a graph showing the oil absorption capacity and recycling property of the modified sponge prepared in example 1 of the present invention.
Detailed Description
Reagents and instrumentation:
hydroxyl-terminated polydimethylsiloxane, commercially pure, eastern mountain chemical Co., ltd; ethyl orthosilicate, dibutyl tin dilaurate, hydrophobic gas phase nano SiO 2 Analytically pure, alet chemical agents limited; n-hexane, toluene, methylene chloride, petroleum ether, ethanol, analytically pure, tianjin chemical reagents, inc.; melamine sponge, commercially available, melamine technologies Inc. of Crane wall City; corn oil, limited Shandong West king foodCompanies.
Nicolet-is5 Fourier transform Infrared spectrometer, simer Feier technologies Co., ltd; ZRY-2P high Wen Zengge thermal analyzer, shanghai Seisaku Instrument & Equipment Co., ltd; TM3030 desktop scanning electron microscope, division of japanese high technology, nuke, japan; JC2000D1 contact angle measuring instrument, shanghai morning digital technical equipment limited; WT-C10002 electronic balance (precision 0.01 g), hangzhou Wanter Co., ltd; RCT basic IKA magnetic stirrer, ai Ka instrument, inc.
The testing method comprises the following steps:
1. performance and characterization of the samples: analyzing the composite solution by using a Nicolet-is5 Fourier transform infrared spectrometer, preparing samples by using a potassium bromide tabletting method, and testing the wave number range to be 400-4000cm -1 Resolution of 4cm -1 The number of scans was 16. The ZRY-2P high Wen Zengge thermal analyzer is filled with air, and the temperature rising rate is 10 ℃/min. After preparing the sample into 5X 2mm small blocks, carrying out surface metal spraying treatment, and observing the surface structure and morphology of the sponge by adopting a TM3030 desk-top scanning electron microscope under the standard voltage of 5 kv. The wettability of the sponge was characterized by JC2000D type contact angle measurement instrument, the amount of droplets was 5uL, and the image was processed to an auto-fit mode.
2. Physicochemical stability test
Extrusion test: the top of the modified sponge is loaded with 100g and repeatedly compressed, and the compression rate is 50% each time; chemical durability test: the modified sponge is placed in sodium chloride solution (simulated seawater) with mass fractions of 10%o, 20%o, 30%o, 40%o and 50%o for 24h. The appearance of the sponge was observed and the contact angle change was recorded.
3. Sponge oil absorption capacity and recycling performance: weighing the modified sponge W 0 Soaking in oil for 5min to saturate, taking out, sucking excessive oil with filter paper, and weighing W 1 The oil absorption capacity (K) of the sponge was calculated by the following formula:
wherein W is 0 Is the mass of the sponge before oil absorption, W 1 Is the mass of the sponge after absorbing oil.
Soaking the modified sponge in oil for 5min, taking out after absorbing saturation, manually extruding to discharge the absorbed oil, fully washing with ethanol, drying in an oven, and then carrying out an oil absorption performance test to examine the circulating oil absorption capability of the sponge material.
The following description of the preferred embodiments of the present invention is provided for better illustration of the invention, and should not be construed as limiting the invention.
Example 1
Cutting melamine sponge into blocks with the length of 2 multiplied by 2cm, washing with deionized water and ethanol for a plurality of times, and drying for later use. 0.5g of hydroxyl-terminated polydimethylsiloxane, 0.1g of ethyl orthosilicate and 0.02g of dibutyltin dilaurate are dissolved in 15g of n-hexane, and 0.18g of hydrophobic gas phase nano SiO is added 2 After ultrasonic dispersion for 10min, stirring for 60min on a magnetic stirrer to obtain PDMS/SiO 2 And (3) compounding the solution. Completely immersing the pretreated sponge in PDMS/SiO 2 In the composite solution, taking out after 30min, and solidifying and drying in an oven at 55 ℃ to obtain PDMS/SiO 2 And (5) modifying the sponge.
The modified sponge prepared according to example 1 was tested by a contact angle tester with an average water contact angle of 151±1.0° (fig. 1), and it was seen that the modified sponge had excellent hydrophobicity.
The scanning electron microscope photograph of the modified sponge prepared according to example 1 shows that the modified substance is firmly attached to the sponge skeleton, and the modified sponge (fig. 2B) maintains good porosity relative to the unmodified sponge (fig. 2A).
The thermogravimetric profile of the modified sponge prepared according to example 1 (fig. 3) shows that the difference in thermal stability of the sponge before and after modification is large. The temperature at which the mass loss of the unmodified sponge is 5% is about 100 ℃, the obvious weight loss temperature is about 370 ℃, the temperature at which the mass loss of the modified sponge is 5% is about 300 ℃, and the obvious weight loss temperature is about 380 ℃. This is because the skeleton structure of the modified sponge is coated with polysiloxane having good thermal stability, and thus the rate of thermal weight loss is low. It can be seen that the modified sponge has good thermal stability.
The hydrophobic and lipophilic properties of the modified sponge prepared according to example 1 are schematically shown (fig. 4). As shown in fig. 4A, the unmodified sponge absorbs moisture, sinks into the water, and the modified sponge floats on the water surface. As shown in fig. 4B, when the modified sponge is pressed into water by an external force, small bubbles are densely distributed on the surface thereof and quickly float on the water surface after the pressure is released. As shown in fig. 4C, the lower part of the beaker was methylene blue dyed deionized water, the upper part was n-hexane, and the modified sponge was immersed in n-hexane while floating at the oil-water separation interface, demonstrating excellent selective adsorption ability of the modified sponge. As shown in fig. 4D, the modified sponge was cut, and the methylene blue-dyed water droplets were spherical on the surface of the sponge, and were allowed to slide down with a slight inclination, demonstrating that the internal structure was also hydrophobic.
The modified sponge prepared according to example 1 remained at a water contact angle of about 150℃after 20-100 extrusion test cycles, and showed no significant change in appearance, as seen in PDMS/SiO 2 The composite is firmly attached to the sponge skeleton. And the modified sponge keeps stable hydrophobicity in seawater with different concentrations simulated by 10 to 50 per mill sodium chloride solution, which benefits from good weather resistance of polysiloxane. It can be seen that the physicochemical properties of the modified sponge are very stable, and their hydrophobic properties can be maintained continuously in many cases.
The adsorption capacity K values of the modified sponge prepared according to example 1 for different organics were 68, 83, 42, 40 and 56, respectively, for toluene, methylene chloride, n-hexane, petroleum ether, and corn oil. In addition, the modified sponge has good recycling performance, and as can be seen from fig. 5B, after 10 adsorption and extrusion cycles, the absorption capacity of the modified sponge to various oils is basically not changed greatly, and the K value can be maintained above 35, which indicates that the modified sponge has good recycling stability, and the material also has good mechanical properties and can be repeatedly extruded for use. It is known that the sponge has very high adsorption capacity and recycling performance for different oils or organic matters, and is an ideal adsorption material.
Comparative example 1
A modified sponge was prepared in a similar manner to example 1. The procedure for the preparation of this example was essentially the same as in example 1, except that: in the step, hydrophobic gas phase nano SiO is added 2 The mass is changed from 0.18g to 0.06g. The water contact angle of the modified sponge prepared by the method is reduced compared with that of the water contact angle in the example 1, and the water contact angle is 145+/-1.0 degrees at the moment, so that the superhydrophobic effect is not achieved. The modified sponge prepared by the method has higher porosity.
Comparative example 2
A modified sponge was prepared in a similar manner to example 1. The procedure for the preparation of this example was essentially the same as in example 1, except that: in the step, hydrophobic gas phase nano SiO is added 2 The mass is changed from 0.18g to 0.30g. The water contact angle of the modified sponge prepared according to the method was increased compared to that of example 1, when the water contact angle was 153±1.0°. However, the electron microscope observation and experimental results show that the porosity of the modified sponge prepared by the method is greatly reduced, and the adsorption effect on different organic matters is obviously reduced.
While the invention has been described with reference to the preferred embodiments, it is not limited thereto, and various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. The preparation method of the modified super-hydrophobic sponge is characterized by comprising the following steps of:
step one, cutting a commercially available melamine sponge into blocks, washing and drying for later use;
step two, hydroxyl-terminated polydimethylsiloxane, ethyl orthosilicate and dibutyltin dilaurate are dissolved in n-hexane, and hydrophobic gas phase nano SiO is added 2 After ultrasonic dispersion, stirring on a magnetic stirrer to obtain PDMS/SiO 2 Compounding the solution;
step three, completely immersing the pretreated sponge in PDMS/SiO 2 In the composite solution, for a certain periodTaking out after the steps, and solidifying and drying to obtain the super-hydrophobic oleophylic sponge;
wherein the hydrophobic gas phase nano SiO 2 The addition amount is 0.3-0.5 of the total mass of the hydroxyl-terminated polydimethylsiloxane and the ethyl orthosilicate, and the mass ratio of the hydroxyl-terminated polydimethylsiloxane to the ethyl orthosilicate is 5:1; the dibutyl tin dilaurate is used as a catalyst, and the mass ratio of the dibutyl tin dilaurate to the total mass of the hydroxyl-terminated polydimethylsiloxane and the tetraethoxysilane is 1:60-1:30.
2. The method of claim 1, wherein the hydrophobic gas phase nano-SiO 2 The addition amount is 0.3 of the total mass of the hydroxyl-terminated polydimethylsiloxane and the tetraethoxysilane.
3. The preparation method according to claim 1 or 2, wherein the ultrasonic time is 10-20 min, the stirring time is 20-40 min, and the soaking time is 20-40 min.
4. A modified superhydrophobic sponge prepared according to the method of any one of claims 1-3.
5. An oil-water separation method, which is characterized in that the modified super-hydrophobic sponge as claimed in claim 4 is used as an adsorbent for adsorption.
6. The method according to claim 5, wherein the oil in the oil-water separation can be any one or more of toluene, methylene dichloride, normal hexane, petroleum ether and corn oil.
7. The use of the modified superhydrophobic sponge of claim 4 for separation and recovery of oil-containing or organic solvents and water mixtures.
8. The use according to claim 7, wherein the separation and recovery can be performed in any one or more of the following environments: a high temperature environment below 300 ℃ and a salt-containing environment of 10 to 50 per mill of sodium chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210237603.8A CN114561039B (en) | 2022-03-11 | 2022-03-11 | Preparation method of polysiloxane modified super-hydrophobic sponge for oil-water separation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210237603.8A CN114561039B (en) | 2022-03-11 | 2022-03-11 | Preparation method of polysiloxane modified super-hydrophobic sponge for oil-water separation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114561039A CN114561039A (en) | 2022-05-31 |
| CN114561039B true CN114561039B (en) | 2023-08-29 |
Family
ID=81718096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210237603.8A Active CN114561039B (en) | 2022-03-11 | 2022-03-11 | Preparation method of polysiloxane modified super-hydrophobic sponge for oil-water separation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114561039B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113354347A (en) * | 2021-07-15 | 2021-09-07 | 贵州大学 | Composite waterproof agent for building material and preparation method thereof |
| CN116020421A (en) * | 2022-11-18 | 2023-04-28 | 北京工业大学 | Preparation method of three-dimensional porous oil-water separation material based on natural expanded graphite |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105542221A (en) * | 2015-12-18 | 2016-05-04 | 河南大学 | Wear-resistant super-hydrophobic super-lipophilic polyurethane sponge and preparation method and application thereof in oil-water continuous separation |
| CN107312198A (en) * | 2016-07-22 | 2017-11-03 | 中国石油化工股份有限公司 | Super-hydrophobic cavernous body and preparation method thereof |
| CN107325322A (en) * | 2016-07-22 | 2017-11-07 | 中国石油化工股份有限公司 | Modifying agent comprising nano material |
| JP2019014793A (en) * | 2017-07-05 | 2019-01-31 | 凸版印刷株式会社 | Water- and oil-repellent base material |
| CN113185259A (en) * | 2021-03-09 | 2021-07-30 | 四川大学 | Integrally hydrophobic fireproof magnesium oxychloride thermal insulation foam material and preparation method thereof |
| CN113429620A (en) * | 2021-07-28 | 2021-09-24 | 陕西科技大学 | Hydrophobic polyurethane foam modified by organic silicon compound and preparation method thereof |
| WO2022000944A1 (en) * | 2020-06-30 | 2022-01-06 | 苏州天澜生物材料科技有限公司 | Solid-liquid-filled low-surface-energy smooth functional material and preparation method therefor |
-
2022
- 2022-03-11 CN CN202210237603.8A patent/CN114561039B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105542221A (en) * | 2015-12-18 | 2016-05-04 | 河南大学 | Wear-resistant super-hydrophobic super-lipophilic polyurethane sponge and preparation method and application thereof in oil-water continuous separation |
| CN107312198A (en) * | 2016-07-22 | 2017-11-03 | 中国石油化工股份有限公司 | Super-hydrophobic cavernous body and preparation method thereof |
| CN107325322A (en) * | 2016-07-22 | 2017-11-07 | 中国石油化工股份有限公司 | Modifying agent comprising nano material |
| JP2019014793A (en) * | 2017-07-05 | 2019-01-31 | 凸版印刷株式会社 | Water- and oil-repellent base material |
| WO2022000944A1 (en) * | 2020-06-30 | 2022-01-06 | 苏州天澜生物材料科技有限公司 | Solid-liquid-filled low-surface-energy smooth functional material and preparation method therefor |
| CN113185259A (en) * | 2021-03-09 | 2021-07-30 | 四川大学 | Integrally hydrophobic fireproof magnesium oxychloride thermal insulation foam material and preparation method thereof |
| CN113429620A (en) * | 2021-07-28 | 2021-09-24 | 陕西科技大学 | Hydrophobic polyurethane foam modified by organic silicon compound and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114561039A (en) | 2022-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114561039B (en) | Preparation method of polysiloxane modified super-hydrophobic sponge for oil-water separation | |
| Wang et al. | Robustly superhydrophobic/superoleophilic kapok fiber with ZnO nanoneedles coating: Highly efficient separation of oil layer in water and capture of oil droplets in oil-in-water emulsions | |
| CN105542221B (en) | A kind of wear-resisting super-hydrophobic super-oleophylic polyurethane sponge, preparation method and its application in grease continuously separates | |
| CN109589917B (en) | Solid phase micro-extraction fiber based on double-layer hollow zinc oxide/carbon material and preparation method thereof | |
| Li et al. | Flexible 3D porous superhydrophobic composites for oil-water separation and organic solvent detection | |
| Zang et al. | Superhydrophobic/superoleophilic corn straw fibers as effective oil sorbents for the recovery of spilled oil | |
| Zhang et al. | Synthesis and characterization of porous fibers/polyurethane foam composites for selective removal of oils and organic solvents from water | |
| Zhang et al. | Cost-effective one-pot surface modified method to engineer a green superhydrophobic sponge for efficient oil/water mixtures as well as emulsions separation | |
| Liu et al. | A superhydrophobic sponge with hierarchical structure as an efficient and recyclable oil absorbent | |
| Ye et al. | Robust and durable self-healing superhydrophobic polymer-coated MWCNT film for highly efficient emulsion separation | |
| Huang et al. | Popped rice biochar and superhydrophobic SiO 2/popped rice biochar for oil adsorption | |
| Wang et al. | Superhydrophobic porous polyvinylidene fluoride monolith with outstanding environmental suitability for high-efficient continuous oil/water separation under harsh conditions | |
| Hou et al. | Exfoliated graphite blocks with resilience prepared by room temperature exfoliation and their application for oil-water separation | |
| CN107163573A (en) | A kind of halloysite nanotubes and polyaniline compound oil absorption material | |
| Yang et al. | Superhydrophobic/superoleophilic modified melamine sponge for oil/water separation | |
| CN112108130A (en) | Intelligent super-hydrophobic material and preparation method and application thereof | |
| Biesuz et al. | Polymer-derived Si3N4 nanofelts as a novel oil spills clean-up architecture | |
| CN114180582A (en) | Hierarchical porous silica aerogel material and preparation method thereof | |
| Wang et al. | Superhydrophobic polyimide/cattail-derived active carbon composite aerogels for effective oil/water separation | |
| Cui et al. | Fabrication and characteristic of 3‐D porous thermoplastic polyurethane/deacetylated cellulose acetate composite foam with outstanding mechanical property and oil/water separation performance | |
| CN110237827B (en) | Preparation method for constructing water-oil separation material by using natural wood | |
| CN113230909A (en) | Preparation method of super-amphiphilic cellulose nitrate film | |
| Lv et al. | Durable superhydrophobic Fe 3 O 4@ C/PVDF/PU sponge for efficient separation of surfactant-stabilized organic solvent/water emulsions | |
| CN108976468B (en) | Hydrophobic modification method of sodium alginate sponge, product and application thereof | |
| CN112679743A (en) | Super-hydrophilic and underwater super-oleophobic material and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |