CN114907615B - Super-hydrophobic magnetic response nano lamellar material and preparation method thereof - Google Patents
Super-hydrophobic magnetic response nano lamellar material and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a super-hydrophobic magnetic response nano lamellar material and a preparation method thereof. The magnetic response sheet filler can respond to magnetic field energy, can be arranged under the guidance of the magnetic field, has good interface effect with a polymer matrix after modification, and can be used as the filler in the polymer matrix composite material. The preparation process is simple, can be used for modifying lamellar filler, provides sites for further chemical modification, and can easily finish super-hydrophobic modification according to requirements. The super-hydrophobic magnetic response nano lamellar material can be applied to metal anti-corrosion coating materials, gas barrier materials, electromagnetic shielding materials, oil-water separation materials, thermal management materials and the like.
Description
Technical Field
The invention relates to a super-hydrophobic magnetic response nano-sheet material sheet and a preparation method thereof, belonging to the technical field of functional materials.
Background
Since the 21 st century, the study of two-dimensional materials in the field of material science has shown explosive growth since the mechanical exfoliation of graphene was achieved. Two-dimensional materials exhibit very high aspect ratios due to their dimensions in one dimension being much smaller than the other two dimensions, exhibiting distinct properties in-plane and in-plane, and their unique properties show tremendous differences compared to zero-and one-dimensional nanomaterials. In order to efficiently use a two-dimensional material, it has been a recent trend to compound a two-dimensional nanosheet material with a polymer matrix, and to realize high-performance modification of the polymer matrix with a small amount of addition. For lamellar nanofillers, such as graphene oxide, talcum powder, MXene and the like, when the lamellar nanofillers are compounded with an organic polymer matrix, the effect of the lamellar nanofillers can be fully exerted by good interface action between two phases, and the effect of reinforcing the matrix is achieved. In addition, the dispersion of the nanoplatelet material in the polymer matrix is also important. The nano-sheet material is easy to agglomerate, and if the nano-sheet material is not ideally dispersed in a polymer matrix, the nano-sheet material is defective and the performance of the nano-sheet material is greatly reduced. The functional modification of the lamellar nano filler can also endow the polymer matrix composite with new functions. The nano filler after super-hydrophobic modification has extremely low surface energy, repels infiltration of water and oil, can endow the coating with characteristics of hydrophobicity, oleophobic property and the like after being added into the coating, and is applied to the fields of anti-fog, anti-fouling, anti-corrosion, oil-water separation and the like. In addition, the alignment of the filler in the polymer matrix is also an important factor affecting its properties. The parallel aligned nanoplatelet materials can provide excellent barrier properties to the polymer. Whereas the parallel alignment of lamellar nanofillers may be achieved by the action of an electric field, a magnetic field or stress. In summary, it is necessary to modify the lamellar nanofiller.
In order to realize the magnetic response of the nano lamellar material, the magnetic response nano particles are generated on the surface of the lamellar filler by adopting an in-situ coprecipitation method, the nano lamellar material modified by the method has sensitive magnetic response performance, the magnetic response nano particles are tightly combined with the nano lamellar, the nano lamellar material is not easy to fall off, the preparation method is simple, and the product collection can be easily realized through magnet attraction. And then the nano lamellar material is endowed with super-hydrophobic property by an in-situ chemical modification method. The alignment of the nanoplatelet materials by a magnetic field is also very easy to achieve, for example, by placing a magnet near the stacked nanoplatelet materials, the orientation of the nanoplatelet materials along the magnetic lines can be accomplished.
Disclosure of Invention
The invention aims to provide a super-hydrophobic magnetic response nano lamellar material and a preparation method thereof. The invention uses an in-situ synthesis method to load the nano particles with magnetic responsiveness on the lamellar filler, and prepares the super-hydrophobic magnetic response nano lamellar material through the subsequent in-situ hydrophobic modification step. Firstly, magnetic nano particles are grown on the nano sheet in situ, and the magnetic response characteristic of the two-dimensional nano sheet is endowed, so that the two-dimensional nano sheet can be arranged under the guidance of a magnetic field. And then sequentially modifying and grafting the nano particles and the hydrophobic modifier on the modified magnetic response two-dimensional nano sheet, increasing the surface roughness, reducing the surface energy and obtaining the super-hydrophobic characteristic. The modified polymer has good interface effect with a polymer matrix, and can be used as a filler in a polymer matrix composite material.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the super-hydrophobic magnetic response nano lamellar material provided by the invention comprises the following components: (a) at least one two-dimensional nanoplatelet material, (b) at least one magnetically responsive substance precursor, (c) at least 2 dispersion media, (d) at least one pH adjuster, (e) at least one inorganic nanoparticle precursor, (f) at least one hydrophobic modifier, and (g) optionally an auxiliary agent. The weight percentages of the components are as follows: 0.1 to 10.0 weight percent of two-dimensional nano sheet material, 0.1 to 10.0 weight percent of magnetic response precursor, 60.0 to 99.5 weight percent of dispersion medium, 0.1 to 5.0 weight percent of pH regulator, 0.1 to 15.0 weight percent of inorganic nano precursor, 0.1 to 20.0 weight percent of hydrophobic modifier and 0 to 10.0 weight percent of optional auxiliary agent, wherein the total weight of the two-dimensional nano sheet material meets 100 percent. And (3) carrying out in-situ chemical reaction and chemical modification on the raw materials (a) - (g) to obtain the super-hydrophobic magnetic response nano-sheet material.
The super-hydrophobic magnetic response nano lamellar material has a multi-stage structure, nano magnetic materials and inorganic nano particles are loaded on the surface of the nano lamellar material, and the nano lamellar material can be oriented along magnetic force lines under the induction of a magnetic field.
The super-hydrophobic magnetic response nano lamellar material has a water contact angle greater than 150 ℃ after compaction and spreading.
In the invention, the nano-platelet material is defined as a two-dimensional platelet material with the thickness of less than 100nm, and can be one or more of nano-platelet carbon material, nano-platelet metal oxide, nano-platelet nonmetallic oxide, nano-platelet silicate, nano-platelet sulfide, nano-platelet nonmetallic oxide, nano-platelet MXene material or natural nano two-dimensional platelet material.
Still further, the two-dimensional nanosheet material is not limited to examples of which are one or more of graphene, graphene oxide, reduced graphene oxide, nano zinc oxide, nano aluminum oxide, nano talcum powder, MXene, nano bentonite or nano kaolin, and the like.
In the present invention, the magnetically responsive substance precursor is defined as an iron ion or a ferrous ion salt.
Still further, the magnetically responsive material precursor is, by way of non-limiting example, one or more of ferric chloride and its hydrates, ferrous chloride and its hydrates, ferric sulfate and its hydrates, ferrous sulfate or its hydrates.
In the invention, the dispersion medium is 2 or more of water, alcohol solvents, benzene solvents, ether solvents, alcohol ether solvents, ketone solvents, ester solvents or hydrocarbon solvents, and at least contains water and an organic solvent.
Still further, the dispersion medium is not limited to examples of which are 2 or more of deionized water, methanol, ethanol, isopropyl alcohol, propylene glycol methyl ether, propylene glycol butyl ether, propylene glycol methyl ether acetate, propylene glycol butyl ether acetate, benzene, toluene, xylene, ethylene glycol methyl ether, acetone, pentanone, ethyl acetate, butyl acetate, etc., and contains at least water and an organic solvent.
In the invention, the pH regulator is one or more of inorganic alkali, inorganic acid and organic acid.
Further, the pH adjustor is one or more of ammonia water, sodium hydroxide, potassium hydroxide, hydrochloric acid, sulfuric acid, glacial acetic acid, phosphoric acid, phytic acid, imidazole, and the like, by way of non-limiting example.
In the invention, the inorganic nanoparticle precursor is one or more of inorganic metal salt, inorganic non-metal salt, metal organic compound, silane coupling agent, titanate coupling agent, acetylacetone metal salt or aluminate coupling agent with molecular weight of 50-1000.
Still further, the inorganic nanoparticle precursor is not limited to examples, but is one or more of zinc sulfate, zinc acetate dihydrate, cobalt acetate, sodium silicate, tris (methoxy) mercaptopropenyl silane, tetraethyl silicate, methyltrimethoxysilane, methyltriethoxysilane, 3-propyltrimethoxysilane, isopropyltris (dioctyl pyrophosphoyloxy) titanate, isopropyltris (dioctyl phosphoric acyloxy) titanate, monoalkoxy unsaturated fatty acid titanate, tetrabutyl titanate, cobalt acetylacetonate hydrate, ferrous acetylacetonate, aluminum acetylacetonate, zinc acetylacetonate, distearoyl isopropyl aluminate or isopropyl distearoyl oxyaluminate, and the like.
In the invention, the hydrophobic modifier is one or more of organofluoro compounds, organofluoro silicides, silicone oil and silane coupling agents with molecular weight of 100-5000.
Further, the hydrophobic modifier is not limited to, but may be exemplified by a silicone oil modifier such as dodecafluoroheptyl methacrylate, perfluorooctylethyl acrylate, trifluoroethyl methacrylate, pentafluoropropyl methacrylate, heptadecafluorodecyl methacrylate, 4' - (hexafluoroisopropyl) -phthalic anhydride, a silicone oil, an ethyl silicone oil, a tolyl silicone oil, a methyl hydrogen silicone oil, an ethyl hydrogen silicone oil, a hydroxyl group silicone oil, a glycol copolymer silicone oil, a higher alcohol modified silicone oil, a fatty acid modified silicone oil, a methylalkyl silicone oil, a chloromethyl silicone oil, a chlorophenyl silicone oil, a carboxyalkyl silicone oil, an aminoalkyl silicone oil, a silazane silicone oil, or a silane coupling agent such as trimethylchlorosilane, dimethyldichlorosilane, dimethyldiethoxysilane, methyltrichlorosilane, trimethylethoxysilane, vinyltrimethoxysilane, dodecyltrimethoxysilane, octadecyltrimethoxysilane, perfluorooctyltrimethoxysilane, or heptadecafluorodecyl triethoxysilane.
In the invention, the optional auxiliary agent is one or more of an acid catalyst, a basic catalyst, an initiator, a chelating agent or a silane coupling agent.
Still further, the optional auxiliary agent in the step is one or more of hydrochloric acid, sulfuric acid, glacial acetic acid, phosphoric acid, ammonia water, sodium hydroxide, potassium hydroxide, azobisisobutyronitrile, cumene hydroperoxide, potassium persulfate, ammonium persulfate, sodium tripolyphosphate, sodium dithiocarbamate, potassium dithiocarbamate, 3-aminopropyl triethoxysilane, 3- (2, 3-epoxypropoxy) propyl trimethoxysilane, and 3- (methacryloyloxy) propyl trimethoxysilane.
The invention provides a preparation method of a super-hydrophobic magnetic response nano lamellar material, which comprises the following specific steps: dispersing a two-dimensional nano sheet material in a dispersing medium to obtain a stable two-dimensional nano sheet material dispersion liquid, adding a magnetic response substance precursor into the dispersion liquid, stirring and dispersing for 0.1-24 hours at 5-100 ℃, then using a pH regulator to adjust the pH to 8-14, continuously reacting for 0.1-24 hours, precipitating and separating, and washing to obtain a magnetic response nano sheet material; then dispersing the magnetic response nano lamellar material in the rest dispersion medium, adding inorganic nano precursor and optional auxiliary agent, using pH regulator to make pH 8-14, stirring and making reaction for 1-72 hr at 5-100 deg.C so as to obtain stable magnetic response lamellar filler dispersion liquid, then adding hydrophobic modifier, continuously stirring and making reaction for 0.1-48 hr at 5-100 deg.C, precipitating and separating, washing so as to obtain the invented super-hydrophobic magnetic response nano lamellar material.
The super-hydrophobic magnetic response nano-sheet material provided by the invention is applied to a metal anti-corrosion coating material, a gas barrier material, an electromagnetic shielding material, an oil-water separation material or a thermal management material, and is used as a filler to be added into a polymer to obtain a composite material.
The invention uses an in-situ synthesis method to load nano particles with magnetic responsiveness on lamellar fillers, and prepares the super-hydrophobic magnetic response nano lamellar material through a subsequent in-situ hydrophobic modification step. Firstly, magnetic nano particles are grown on the nano sheet in situ, and the magnetic response characteristic of the two-dimensional nano sheet is endowed, so that the two-dimensional nano sheet can be arranged under the guidance of a magnetic field. And then sequentially modifying and grafting the nano particles and the hydrophobic modifier on the modified magnetic response two-dimensional nano sheet, increasing the surface roughness, reducing the surface energy and obtaining the super-hydrophobic characteristic. The modified polymer has good interface effect with a polymer matrix, and can be used as a filler in a polymer matrix composite material.
The invention has the beneficial effects that: the operation method is simple, and the modification effect is obvious. And (3) in-situ modifying the magnetic response nano particles on the surface of the nano lamellar material to obtain the magnetic response nano lamellar, and then further growing the nano particles and performing super-hydrophobic chemical modification on the nano lamellar material. The magnetic response lamellar filler can respond to magnetic field energy and can be arranged under the guidance of the magnetic field, and the lamellar filler is difficult to infiltrate by water due to the super-hydrophobic characteristic. The modification also improves the interfacial effect between the platelet material and the polymer matrix, and can be used as a filler in polymer matrix composites.
The preparation process is simple, can be used for modifying lamellar filler, provides sites for further chemical modification, and can easily finish super-hydrophobic modification according to requirements. The magnetically responsive nano-sheet material can be applied to polymer matrix composite materials, and can be applied to metal anti-corrosion coating materials, gas barrier materials, electromagnetic shielding materials, oil-water separation materials, thermal management materials and the like.
All percentages and ratios used herein are by weight unless otherwise indicated.
Drawings
Fig. 1 is a Scanning Electron Microscope (SEM) photograph of a super-hydrophobic magnetic-response graphene oxide nano-sheet material prepared in example 1, in which high-density magnetic ferroferric oxide nano-particles are loaded on the graphene oxide sheet. Wherein: (a) An SEM image of magnetically responsive graphene oxide at 1 ten thousand times magnification and (b) an SEM image of magnetically responsive graphene oxide at 5 ten thousand times magnification.
Fig. 2 is a photograph of a water contact angle of the superhydrophobic magnetic-response graphene oxide nanoplatelet material prepared in example 1. Wherein: (a) A photograph of the water contact angle for the initial graphene oxide powder and (b) a photograph of the water contact angle for the superhydrophobic magnetically-responsive graphene oxide nanoplatelet material.
Fig. 3 shows the magnetic response performance of the superhydrophobic magnetic-response graphene oxide nanoplatelet material prepared in example 1. Wherein: (a) Fe in magnetic response 3 O 4 Hysteresis loops of the nano-particles and (b) are photographs of the super-hydrophobic magnetically-responsive graphene oxide nanoplatelet material attracted by a magnet.
Detailed Description
For further illustrating the present invention, the following examples are given, but the present invention is not limited to the following examples.
Example 1
A super-hydrophobic magnetic response nano lamellar material and a preparation method thereof specifically comprises the following steps:
dispersing 0.2g of graphene oxide in 50g of ethanol and stripping to obtain a stable graphene oxide dispersion, adding 0.3g of ferric chloride hexahydrate and 0.1g of ferrous chloride tetrahydrate into the graphene oxide dispersion, stirring for 1h, regulating the pH of the system to 9-14 by using ammonia water, continuing to react for 1h under vigorous stirring, standing for precipitation, magnetically separating to obtain magnetically-responsive graphene oxide nano sheets, dispersing 0.3g of magnetically-responsive graphene oxide nano sheets in 85g of ethanol to obtain a stable magnetically-responsive graphene oxide nano sheet dispersion, adding 15g of deionized water and 4g of ammonia water (28 wt%) into the magnetically-responsive graphene oxide nano sheet dispersion, dissolving 0.7 g of g tetraethyl silicate into 20g of ethanol, adding the system, continuing to stir and react for 2h, dissolving 0.35g of octadecyltrimethoxysilane into 25g of ethanol, adding 5g of deionized water, continuing to stir in a water bath at 40 ℃, pre-hydrolyzing the octacosane, then adding a pre-hydrolyzed hydrophobic modifier into the system, continuing to stir for 1h, magnetically-separating to obtain magnetically-responsive super-hydrophobic graphene oxide nano sheets.
As shown in fig. 1, a Scanning Electron Microscope (SEM) photograph of the super-hydrophobic magnetic response graphene oxide nano sheet material prepared in example 1, wherein high-density magnetic ferroferric oxide nano particles are loaded on the graphene oxide sheet. Wherein: (a) An SEM image of magnetically responsive graphene oxide at 1 ten thousand times magnification and (b) an SEM image of magnetically responsive graphene oxide at 5 ten thousand times magnification.
As shown in fig. 2, a water contact angle photograph of the superhydrophobic magnetic-response graphene oxide nanoplatelet material prepared in example 1. Wherein: (a) A photograph of the water contact angle for the initial graphene oxide powder and (b) a photograph of the water contact angle for the superhydrophobic magnetically-responsive graphene oxide nanoplatelet material.
As shown in fig. 3, the magnetic response performance of the superhydrophobic magnetic response graphene oxide nano-sheet material prepared in example 1 is shown. Wherein: (a) Fe in magnetic response 3 O 4 Hysteresis loops of the nano-particles and (b) are photographs of the super-hydrophobic magnetically-responsive graphene oxide nanoplatelet material attracted by a magnet.
Example 2
A super-hydrophobic magnetic response nano lamellar material and a preparation method thereof specifically comprises the following steps:
10g of nano talcum powder is dispersed in 80g of water to obtain stable talcum powder dispersion liquid, 50g of 30% NaOH solution is added into the dispersion liquid, the mixture is stirred vigorously at 85 ℃ for reflux reaction for 48h, and the hydroxylated talcum powder is obtained after washing and drying. Dispersing 0.5g of hydroxylated talcum powder in 50g of water, introducing nitrogen for 0.5h to blow out air, keeping a nitrogen atmosphere, adding 0.4g of ferric sulfate and 0.8g of ferrous sulfate into the hydroxylated talcum powder dispersion, stirring for 1h, regulating the pH of the system to 6-10 by using ammonia water, continuing to react for 3h under vigorous stirring, standing for precipitation, magnetically separating to obtain magnetically responsive talcum powder pieces, dispersing 2g of magnetically responsive talcum powder pieces in 50g of isopropanol to obtain stable magnetically responsive talcum powder piece dispersion, adding 10g of deionized water and 1g of ammonia water (28 wt%) into the magnetically responsive talcum powder piece dispersion, dissolving 1g of zirconium isopropoxide into 5g of isopropanol and 5g of ethanol into the system, continuing to react for 2h under stirring, dissolving 1g of perfluorooctyl trimethoxysilane into 15g of ethanol, adding 2g of deionized water into the system under continuous stirring, carrying out pre-hydrolysis on the perfluorooctyl trimethoxysilane, then adding a pre-hydrolyzed modifier into the system, continuing to react for 2h, magnetically separating to obtain the superhydrophobic magnetically responsive nano-talcum powder pieces.
Example 3
A super-hydrophobic magnetic response nano lamellar material and a preparation method thereof specifically comprises the following steps:
0.5g of two-dimensional nano MXene material (Ti 3 C 2 T x ) Dispersing in 100g deionized water, stripping to obtain a stable MXene material dispersion liquid, adding 1g ferric sulfate and 0.2g ferrous sulfate into the MXene material dispersion liquid, stirring for 12h, regulating the pH value of the system to 9-14 by using a sodium hydroxide aqueous solution (30%), continuing to react for 24h, standing for precipitation, and separating to obtain the magnetically-responsive MXene nano-sheet. Then 0.2g of magnetic response MXene nano-sheet is dispersed in 30g of n-butyl alcohol and 10g of acetone to obtain stable magnetic response MXene nano-sheet dispersion liquid, 10g of deionized water and 1g of ammonia water (28 wt%) are added into the dispersion liquid, 1g of 3-propyl trimethoxy silane is dissolved in 25g of ethanol, and 2g of deionized water is added into the dispersion liquid for further holdingAnd (3) continuously stirring for reaction for 4 hours, carrying out prehydrolysis on 3-propyl trimethoxy silane, then adding the prehydrolyzed 3-propyl trimethoxy silane into the system, continuously stirring for reaction for 1 hour, adding 1g of dodecafluoroheptyl methacrylate hydrophobic modifier dissolved in 5g of toluene, adding 0.02g of azodiisobutyronitrile for initiating reaction, reacting for 4 hours at 75 ℃, and separating to obtain the super-hydrophobic modified magnetic response MXene nano-sheet.
Example 4
A super-hydrophobic magnetic response nano lamellar material and a preparation method thereof specifically comprises the following steps:
dispersing 1g of nano zinc oxide sheet in 100g of water, adding 0.8g of ferric sulfate and 0.16g of ferrous chloride into the nano zinc oxide sheet dispersion, stirring for 0.5h, regulating the pH of the system to 6-10 by using ammonia water, continuing to react for 2h under vigorous stirring, standing for precipitation, magnetically separating to obtain a magnetically responsive nano zinc oxide sheet, dispersing 0.5g of magnetically responsive nano zinc oxide sheet in 40g of isopropanol, ultrasonically obtaining a stable magnetically responsive nano zinc oxide sheet dispersion, adding 10g of deionized water and 2g of ammonia water (28 wt%) into the magnetically responsive nano zinc oxide sheet dispersion, dispersing 1g of aluminum nitrate, 2g of cobalt nitrate, 1g of ethylenediamine tetraacetic acid into 10g of water and 10g of ethanol, continuing to stir and react for 24h, dissolving 0.1g heptadecafluorodecyltriethoxysilane into 20g of ethanol, adding 2g of deionized water, continuing to stir, pre-hydrolyzing the heptadecafluorodecyltriethoxysilane, adding a pre-hydrolyzed hydrophobic modifier into the system, continuing to stir and reacting for 2h, magnetically separating to obtain the super-hydrophobic nano zinc oxide sheet.
As shown in Table 1, the water contact angles of the super-hydrophobic magnetic response nano-sheet materials prepared in examples 1-4 are all larger than 150 degrees, and the rolling angles are all smaller than 10 degrees.
Table 1: water contact Angle and Rolling Angle of the super-hydrophobic magnetic response nanosheet Material prepared in examples 1-4
| Examples | Contact angle (°) | Roll angle (°) |
| Example 1 | 150.3 | 1.1 |
| Example 2 | 153.1 | 3.4 |
| Example 3 | 150.9 | 6.0 |
| Example 4 | 151.9 | 8.5 |
The above embodiments are illustrative only, and all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (8)
1. A super-hydrophobic magnetic response nano-sheet material is characterized in that:
the super-hydrophobic magnetic response nano lamellar material comprises the following raw materials: (a) at least one two-dimensional nanoplatelet material, (b) at least one magnetically responsive substance precursor, (c) at least 2 dispersion media, (d) at least one pH adjuster, (e) at least one inorganic nanoparticle precursor, (f) at least one hydrophobic modifier, and (g) optionally an auxiliary agent; the weight percentages of the components are as follows: 0.1 to 10.0 weight percent of two-dimensional nano sheet material, 0.1 to 10.0 weight percent of magnetic response precursor, 60.0 to 99.5 weight percent of dispersion medium, 0.1 to 5.0 weight percent of pH regulator, 0.1 to 15.0 weight percent of inorganic nano particle precursor, 0.1 to 20.0 weight percent of hydrophobic modifier and 0 to 10.0 weight percent of optional auxiliary agent, wherein the total weight of the two-dimensional nano sheet material meets 100 percent; the raw materials (a) - (g) are subjected to in-situ chemical reaction and chemical modification to obtain a super-hydrophobic magnetic response nano-sheet material, wherein the super-hydrophobic magnetic response nano-sheet material has a multi-stage structure, the nano-magnetic material and inorganic nano particles are loaded on the surface of the nano-sheet material, the super-hydrophobic magnetic response nano-sheet material can be oriented along magnetic lines under the induction of a magnetic field, and the water contact angle after compaction and spreading is larger than 150 ℃;
the preparation method of the super-hydrophobic magnetic response nano lamellar material comprises the following specific steps: dispersing a two-dimensional nano sheet material in a dispersing medium to obtain a stable two-dimensional nano sheet material dispersion liquid, adding a magnetic response substance precursor into the dispersion liquid, stirring and dispersing for 0.1-24 hours at 5-100 ℃, then using a pH regulator to adjust the pH to 8-14, continuously reacting for 0.1-24 hours, precipitating and separating, and washing to obtain a magnetic response nano sheet material; then dispersing the magnetic response nano lamellar material in the rest dispersion medium, adding inorganic nano particle precursor and optional auxiliary agent, using pH regulator to make pH 8-14, stirring and reacting for 1-72 hr at 5-100deg.C to obtain stable magnetic response lamellar filler dispersion, then adding hydrophobic modifier, continuously stirring and reacting for 0.1-48 hr at 5-100deg.C, precipitating and separating, washing to obtain the super-hydrophobic magnetic response nano lamellar material;
the hydrophobic modifier is organofluoride or silane coupling agent with molecular weight of 100-5000; the organic fluoride is one or more of dodecafluoroheptyl methacrylate, perfluorooctyl ethyl acrylate, trifluoroethyl methacrylate, pentafluoropropyl methacrylate, heptadecafluorodecyl methacrylate or 4,4' - (hexafluoroisopropyl) -phthalic anhydride organic fluoride;
the optional auxiliary agent is one or more of an acid catalyst, an alkaline catalyst, an initiator, a chelating agent or a silane coupling agent.
2. The superhydrophobic magnetically-responsive nanosheet material of claim 1, wherein: the two-dimensional nano-sheet material adopts a two-dimensional sheet material with the thickness smaller than 100nm, and is specifically one or more of nano-sheet carbon material, nano-sheet metal oxide, nano-sheet silicate, nano-sheet sulfide, nano-sheet nonmetallic oxide, nano-sheet MXene material or natural nano-two-dimensional sheet material.
3. The superhydrophobic magnetically-responsive nanosheet material of claim 1, wherein: the magnetically responsive material precursor is an iron ion or ferrous ion salt.
4. The superhydrophobic magnetically-responsive nanosheet material of claim 1, wherein: the dispersion medium is 2 or more of water, alcohol solvents, benzene solvents, ether solvents, alcohol ether solvents, ketone solvents, ester solvents or hydrocarbon solvents, and at least contains water and an organic solvent.
5. The superhydrophobic magnetically-responsive nanosheet material of claim 1, wherein: the pH regulator is one or more of inorganic base, inorganic acid, organic acid or organic base.
6. The superhydrophobic magnetically-responsive nanosheet material of claim 1, wherein: the inorganic nanoparticle precursor is one or more of inorganic metal salt, inorganic non-metal salt, silane coupling agent, titanate coupling agent, acetylacetone metal salt or aluminate coupling agent with the molecular weight of 50-1000.
7. A method for preparing the super-hydrophobic magnetic response nano-sheet material according to claim 1, which is characterized in that: the method comprises the following specific steps: dispersing a two-dimensional nano sheet material in a dispersing medium to obtain a stable two-dimensional nano sheet material dispersion liquid, adding a magnetic response substance precursor into the dispersion liquid, stirring and dispersing for 0.1-24 hours at 5-100 ℃, then using a pH regulator to adjust the pH to 8-14, continuously reacting for 0.1-24 hours, precipitating and separating, and washing to obtain a magnetic response nano sheet material; then dispersing the magnetic response nano lamellar material in the rest dispersion medium, adding inorganic nano particle precursor and optional auxiliary agent, using pH regulator to make pH 8-14, stirring and making reaction for 1-72 hr at 5-100 deg.C so as to obtain stable magnetic response lamellar filler dispersion liquid, then adding hydrophobic modifier, continuously stirring and making reaction for 0.1-48 hr at 5-100 deg.C, precipitating and separating, washing so as to obtain the invented super-hydrophobic magnetic response nano lamellar material.
8. The use of the superhydrophobic magnetically-responsive nanosheet material of claim 1 for preparing a metallic corrosion-resistant coating material, a gas barrier material, an electromagnetic shielding material, an oil-water separation material, or a thermal management material, wherein: and adding the super-hydrophobic magnetic response nano lamellar material with magnetic responsiveness, which has a water contact angle of more than 150 ℃ after compaction and spreading, into a polymer as a filler to obtain the functional composite material.
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| WO2008154839A1 (en) * | 2007-06-15 | 2008-12-24 | Institute Of Chemistry, Chinese Academy Of Science | A sheet composite material with dual surface properties and its preparation process |
| CN104437372A (en) * | 2014-11-20 | 2015-03-25 | 哈尔滨理工大学 | Method for preparing ferroferric oxide/carbon /nano-graphite sheet nanocomposite material in situ |
| CN110404506A (en) * | 2019-07-12 | 2019-11-05 | 中国科学院东北地理与农业生态研究所 | Magnetic oxygenated graphene/sodium titanate composite material preparation method and application |
| CN113337178A (en) * | 2021-05-26 | 2021-09-03 | 复旦大学 | Multi-response controllable self-repairing super-hydrophobic/highly-hydrophobic coating material and preparation method thereof |
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| WO2008154839A1 (en) * | 2007-06-15 | 2008-12-24 | Institute Of Chemistry, Chinese Academy Of Science | A sheet composite material with dual surface properties and its preparation process |
| CN104437372A (en) * | 2014-11-20 | 2015-03-25 | 哈尔滨理工大学 | Method for preparing ferroferric oxide/carbon /nano-graphite sheet nanocomposite material in situ |
| CN110404506A (en) * | 2019-07-12 | 2019-11-05 | 中国科学院东北地理与农业生态研究所 | Magnetic oxygenated graphene/sodium titanate composite material preparation method and application |
| CN113337178A (en) * | 2021-05-26 | 2021-09-03 | 复旦大学 | Multi-response controllable self-repairing super-hydrophobic/highly-hydrophobic coating material and preparation method thereof |
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