CN116463058A - Silicon carbide wear-resistant coating material and application thereof - Google Patents
Silicon carbide wear-resistant coating material and application thereof Download PDFInfo
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- CN116463058A CN116463058A CN202310488226.XA CN202310488226A CN116463058A CN 116463058 A CN116463058 A CN 116463058A CN 202310488226 A CN202310488226 A CN 202310488226A CN 116463058 A CN116463058 A CN 116463058A
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- silicon carbide
- fluorosilane
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- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 86
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims abstract description 85
- 239000000463 material Substances 0.000 title claims abstract description 39
- 239000011248 coating agent Substances 0.000 title claims abstract description 22
- 238000000576 coating method Methods 0.000 title claims abstract description 19
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 51
- XPBBUZJBQWWFFJ-UHFFFAOYSA-N fluorosilane Chemical compound [SiH3]F XPBBUZJBQWWFFJ-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000003756 stirring Methods 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000006185 dispersion Substances 0.000 claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 229910000799 K alloy Inorganic materials 0.000 claims abstract description 10
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 claims abstract description 10
- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002904 solvent Substances 0.000 claims abstract description 9
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 7
- 239000002253 acid Substances 0.000 claims abstract description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 238000004070 electrodeposition Methods 0.000 claims description 11
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 claims description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- 239000003792 electrolyte Substances 0.000 claims description 8
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 8
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 8
- 229910052700 potassium Inorganic materials 0.000 claims description 8
- 239000011591 potassium Substances 0.000 claims description 8
- -1 potassium cations Chemical class 0.000 claims description 8
- 239000004094 surface-active agent Substances 0.000 claims description 8
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 7
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 7
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 5
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 5
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 4
- CTIKAHQFRQTTAY-UHFFFAOYSA-N fluoro(trimethyl)silane Chemical compound C[Si](C)(C)F CTIKAHQFRQTTAY-UHFFFAOYSA-N 0.000 claims description 4
- 239000008096 xylene Substances 0.000 claims description 4
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000010702 perfluoropolyether Substances 0.000 claims description 3
- KKYDYRWEUFJLER-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6,6,7,7,10,10,10-heptadecafluorodecyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)CCC(F)(F)F KKYDYRWEUFJLER-UHFFFAOYSA-N 0.000 claims description 2
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 2
- YCGOFOKTNYLRPC-UHFFFAOYSA-N difluoro-[fluoro-(1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluorooctyl)-(1,1,2,2,2-pentafluoroethyl)silyl]oxy-trifluorosilyloxysilane Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)[Si](F)(C(F)(F)C(F)(F)F)O[Si](F)(F)O[Si](F)(F)F YCGOFOKTNYLRPC-UHFFFAOYSA-N 0.000 claims description 2
- 238000007747 plating Methods 0.000 claims description 2
- AKIOHULKHAVIMI-UHFFFAOYSA-N trichloro(1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,12-pentacosafluorododecyl)silane Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)[Si](Cl)(Cl)Cl AKIOHULKHAVIMI-UHFFFAOYSA-N 0.000 claims description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims 3
- HFQQZARZPUDIFP-UHFFFAOYSA-M sodium;2-dodecylbenzenesulfonate Chemical compound [Na+].CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O HFQQZARZPUDIFP-UHFFFAOYSA-M 0.000 claims 1
- 241000411851 herbal medicine Species 0.000 abstract description 13
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 6
- 238000000227 grinding Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002209 hydrophobic effect Effects 0.000 description 13
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- 238000007550 Rockwell hardness test Methods 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000004729 solvothermal method Methods 0.000 description 3
- 238000007751 thermal spraying Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/914—Carbides of single elements
- C01B32/956—Silicon carbide
- C01B32/963—Preparation from compounds containing silicon
- C01B32/977—Preparation from organic compounds containing silicon
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention belongs to the technical field of material processing, and particularly relates to a silicon carbide wear-resistant coating material and application thereof. The preparation method of the silicon carbide wear-resistant material comprises the following steps: dissolving tetrachlorosilane and sodium-potassium alloy in a solvent, and reacting at the temperature of 100-200 ℃ to obtain nano silicon carbide; uniformly dispersing nano silicon carbide in a water/alcohol solution to obtain nano silicon carbide dispersion liquid; dispersing fluorosilane in a water/alcohol solution, adding dilute acid, and carrying out fluorosilane hydrolysis reaction under stirring to obtain hydrolyzed fluorosilane; and uniformly mixing the nano silicon carbide dispersion liquid and the hydrolyzed fluorosilane, and fully reacting under stirring to obtain the silicon carbide wear-resistant material. The silicon carbide wear-resistant material is applied to a metal medium, has uniform and smooth surface, has good grinding effect on Chinese herbal medicines, and can prevent heavy metals from falling off. Meanwhile, the adhesion of the Chinese herbal medicine on the surface of the medium can be reduced, and the loss of the Chinese herbal medicine is reduced.
Description
Technical Field
The invention belongs to the technical field of material processing, and particularly relates to a silicon carbide wear-resistant coating material and application thereof.
Background
The vibration mill is also called as a vibration mill pulverizer, and utilizes high-frequency vibration of a cylinder, steel balls or steel bar media in the cylinder impact materials by virtue of inertial force, and the acceleration of the media when impacting the materials can reach 10g-15g, so that the vibration mill is novel efficient powder making equipment.
However, when the vibration grinding method is used for preparing superfine Chinese herbal medicine powder, as the materials such as the cylinder body and the medium are all metal materials, the long-time friction and collision between the medium and the cylinder wall can cause abrasion and falling of the machine body, so that the Chinese herbal medicine causes pollution of heavy metals such as chromium, nickel and the like, the heavy metal content of the superfine Chinese herbal medicine product has larger variable, and the quality of the product is greatly influenced.
Therefore, enhancing the wear resistance of the media and reducing the contamination of heavy metals is a key core problem to be solved in the art.
Disclosure of Invention
In view of the above problems, it is an object of the present invention to provide a silicon carbide wear-resistant coating material. The silicon carbide wear-resistant coating material is prepared by tetrachlorosilane and sodium-potassium alloy, and then is subjected to hydrophobic modification. The Chinese herbal medicine has good grinding effect when being coated on a vibration grinding medium material.
In order to achieve the above purpose, the present invention may adopt the following technical scheme:
in one aspect, the invention provides a silicon carbide wear-resistant material, the preparation method of which comprises: dissolving tetrachlorosilane and sodium-potassium alloy in a solvent, and reacting at the temperature of 100-200 ℃ to obtain nano silicon carbide; uniformly dispersing nano silicon carbide in a water/alcohol solution to obtain nano silicon carbide dispersion liquid; dispersing fluorosilane in a water/alcohol solution, adding dilute acid, and carrying out fluorosilane hydrolysis reaction under stirring to obtain hydrolyzed fluorosilane; and uniformly mixing the nano silicon carbide dispersion liquid and the hydrolyzed fluorosilane, and fully reacting under stirring to obtain the silicon carbide wear-resistant material.
In another aspect, the invention provides the use of the silicon carbide wear-resistant coating material as described above as a surface coating agent in the preparation of a metal medium for vibratory mills.
The beneficial effects of the invention include: the silicon carbide wear-resistant material provided by the invention is applied to a metal medium, has uniform and smooth surface, has good grinding effect on Chinese herbal medicines, and can prevent heavy metals from falling off. Meanwhile, the adhesion of the Chinese herbal medicine on the surface of the medium can be reduced, and the loss of the Chinese herbal medicine is reduced.
Detailed Description
The examples are presented for better illustration of the invention, but the invention is not limited to the examples. Those skilled in the art will appreciate that various modifications and adaptations of the embodiments described above are possible in light of the above teachings and are intended to be within the scope of the invention.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. Unless the context clearly differs, singular forms of expression include plural forms of expression. As used herein, it is understood that terms such as "comprising," "having," "including," and the like are intended to indicate the presence of a feature, number, operation, component, part, element, material, or combination. The terms of the present invention are disclosed in the specification and are not intended to exclude the possibility that one or more other features, numbers, operations, components, elements, materials or combinations thereof may be present or added. As used herein, "/" may be interpreted as "and" or "as appropriate.
The embodiment of the invention provides a silicon carbide wear-resistant coating material, and a preparation method thereof can comprise the following steps: dissolving tetrachlorosilane and sodium-potassium alloy in a solvent, and reacting at the temperature of 100-200 ℃ to obtain nano silicon carbide; uniformly dispersing nano silicon carbide in a water/alcohol solution to obtain nano silicon carbide dispersion liquid; dispersing fluorosilane in a water/alcohol solution, adding dilute acid, and carrying out fluorosilane hydrolysis reaction under stirring to obtain hydrolyzed fluorosilane; and uniformly mixing the nano silicon carbide dispersion liquid and the hydrolyzed fluorosilane, and fully reacting under stirring to obtain the silicon carbide wear-resistant material.
The silicon carbide wear-resistant material enables equipment to work in a protection state of the wear-resistant anticorrosive layer to a great extent, and the service life of the equipment is prolonged to a great extent. The silicon carbide wear-resistant material can be firmly bonded with various base materials such as metal, stone, wood, plastic and the like, and has extremely high wear resistance, impact resistance, brittle fracture resistance, corrosion resistance and the like. Therefore, the silicon carbide wear-resistant material is added on the surface of the medium of the vibration mill, so that the wear resistance of the medium can be improved, and the falling-off of heavy metal in the medium can be avoided. In addition, as the Chinese herbal medicine is generally a hydrophilic material, the improvement of the hydrophobicity of the silicon carbide abrasion-resistant material on the surface of the medium can reduce the adhesion of the Chinese herbal medicine on the surface of the medium and reduce the loss of the Chinese herbal medicine.
In some embodiments, the reaction time for the reaction at the temperature of 100℃to 200℃may be 8 to 36 hours, such as 10 hours, 15 hours, 20 hours, 25 hours, 30 hours, 35 hours, etc.
In some embodiments, the mass ratio of the tetrachlorosilane to the sodium-potassium alloy is (8-15): 1, such as 9:1, 12:1, or 14:1, etc.
In some embodiments, the mass ratio of the nano-silicon carbide dispersion to the hydrolyzed fluorosilane is 1 (1-2), such as 1:1.5.
In some embodiments, the solvent may be one or a mixture of carbon tetrachloride, toluene, xylene, N-dimethylformamide.
In some embodiments, the fluorosilane is any one of a hexa-carbon perfluoropolyether siloxane, heptadecafluorodecyl trimethoxysilane, perfluorododecyl trichlorosilane, perfluorooctyl ethyl trisiloxane, or trimethyl fluorosilane.
In another aspect, the invention provides the use of the silicon carbide wear-resistant coating material as described above as a surface coating agent in the preparation of a metal medium for vibratory mills.
In some embodiments, the silicon carbide wear-resistant coating material is dispersed in a surfactant solution; adding the electrolyte containing nano and potassium cations, wherein the anode is pure nickel, and the cathode is a metal medium.
In some embodiments, the surfactant may be any of cetyltrimethylammonium bromide (CTAB), sodium dodecylbenzene sulfonate (SDBS), and polyvinylpyrrolidone (PVP).
In some embodiments, the cathode current density may be 2A/dm 2 -10A/dm 2 The pH value of the plating solution is kept between 5.0 and 7.5 at 40 ℃ to 90 ℃ for electrodeposition.
In some embodiments, the mass ratio of the surfactant solution to the electrolyte containing sodium and potassium cations may be 1 (1-2), such as 1:1.5.
In some embodiments, the mass ratio of the surfactant solution to the electrolyte containing sodium and potassium cations may be 1 (1-2), such as 1:1.5.
In some embodiments, the metal medium may be Mn steel.
The surfactant is one of Cetyl Trimethyl Ammonium Bromide (CTAB), anionic surfactant Sodium Dodecyl Benzene Sulfonate (SDBS) and nonionic surfactant polyvinylpyrrolidone (PVP).
For a better understanding of the present invention, the content of the present invention is further elucidated below in connection with the specific examples, but the content of the present invention is not limited to the examples below.
Example 1
(1) Method for preparing nano silicon carbide by adopting solvothermal method
According to the weight ratio, 8 parts of tetrachlorosilane and 1 part of sodium-potassium alloy are dissolved in 100 parts of solvent of carbon tetrachloride and toluene, and react for 8 hours at 130 ℃ to obtain the nano silicon carbide, wherein the particle size of the nano silicon carbide is 15nm.
(2) Hydrophobic modified nano silicon carbide by adopting interface coupling method
Uniformly dispersing 10 parts by weight of nano silicon carbide in 100 parts by weight of water/ethanol (1:1) solution according to the weight ratio; dispersing 10 parts by weight of six-carbon perfluoropolyether siloxane in a water/alcohol (1:1) solution, adding dilute hydrochloric acid, and carrying out fluorosilane hydrolysis reaction under stirring to obtain hydrolyzed fluorosilane; uniformly mixing the nano silicon carbide dispersion liquid and the hydrolyzed fluorosilane solution according to the mass ratio of 1:1.5, and fully reacting for 3 hours under stirring to obtain the fluorosilane surface modified nano silicon carbide, wherein the water contact angle of the obtained hydrophobic modified nano silicon carbide (fluorosilane surface modified nano silicon carbide) is 162 degrees.
(3) Hydrophobic nano silicon carbide is coated on the surface of the medium by adopting an electrodeposition method
Dispersing 10 parts by weight of hydrophobic nano silicon carbide in 100 parts by weight of CTAB solution, stirring, adding into 100 parts by weight of basic electrolyte anode containing sodium and potassium cations, adopting a pure nickel anode, and adopting Mn steel-based cathodeA bulk cathode current density of 2A/dm 2 The electrodeposition was carried out at 60℃with the pH of the bath maintained at 6.0, and the solution was stirred during the electrodeposition.
The silicon carbide modified Mn steel is obtained, and the hardness of the silicon carbide modified Mn steel is 650 according to the Rockwell hardness test method of the surface of the metal thermal spraying coating.
Example 2
(1) Method for preparing nano silicon carbide by adopting solvothermal method
According to the weight ratio, 10 parts of tetrachlorosilane and 2 parts of sodium-potassium alloy are dissolved in 100 parts of carbon tetrachloride and xylene solvent, and the mixture is reacted for 24 hours at 180 ℃ to obtain nano silicon carbide, wherein the particle size of the obtained nano silicon carbide is 80nm.
(2) Hydrophobic modified nano silicon carbide by adopting interface coupling method
Uniformly dispersing 10 parts by weight of nano silicon carbide in 100 parts by weight of water/alcohol (1:1) solution according to the weight ratio; 15 parts of trimethyl fluorosilane is dispersed in a water/alcohol (1:1) solution, diluted hydrochloric acid is added, and fluorosilane hydrolysis reaction is carried out under stirring to obtain hydrolyzed fluorosilane; uniformly mixing the nano silicon carbide dispersion liquid and the hydrolyzed fluorosilane solution according to the mass ratio of 1:2, and fully reacting for 4 hours under stirring to obtain the fluorosilane surface modified nano silicon carbide, wherein the water contact angle of the obtained hydrophobic modified nano silicon carbide (fluorosilane surface modified nano silicon carbide) is 150 degrees.
(3) Hydrophobic nano silicon carbide is coated on the surface of the medium by adopting an electrodeposition method
Dispersing 20 parts by weight of hydrophobic nano silicon carbide in 100 parts by weight of PVP solution, stirring, adding into 100 parts by weight of basic electrolyte anode containing nano and potassium cations, adopting a pure nickel anode, adopting a Mn steel matrix as a cathode, and ensuring that the cathode current density is 5A/dm 2 The electrodeposition was carried out at 90℃with the pH of the bath maintained at 7.0, and the solution was stirred during the electrodeposition.
The silicon carbide modified Mn steel is obtained, and the hardness of the silicon carbide modified Mn steel is 720 according to the Rockwell hardness test method of the surface of the metal thermal spraying coating.
Example 3
(1) Method for preparing nano silicon carbide by adopting solvothermal method
According to the weight ratio, 60 parts of tetrachlorosilane and 4 parts of sodium-potassium alloy are dissolved in 100 parts of carbon tetrachloride and xylene solvent, and react for 24 hours at 130 ℃ to obtain nano silicon carbide, wherein the particle size of the obtained nano silicon carbide is 150nm.
(2) Hydrophobic modified nano silicon carbide by adopting interface coupling method
Uniformly dispersing 10 parts by weight of nano silicon carbide in 100 parts by weight of water/alcohol (1:1) solution according to the weight ratio; dispersing 20 parts of trimethylfluorosilane in a water/alcohol solution, adding dilute hydrochloric acid, and carrying out fluorosilane hydrolysis reaction under stirring to obtain hydrolyzed fluorosilane; uniformly mixing the nano silicon carbide dispersion liquid and the hydrolyzed fluorosilane solution according to the mass ratio of 1:1.5, and fully reacting for 4 hours under stirring to obtain the fluorosilane surface modified nano silicon carbide, wherein the water contact angle of the obtained hydrophobic modified nano silicon carbide (fluorosilane surface modified nano silicon carbide) is 130 degrees.
(3) Hydrophobic nano silicon carbide is coated on the surface of the medium by adopting an electrodeposition method
Dispersing 10 parts by weight of hydrophobic nano silicon carbide in 100 parts by weight of PVP solution, stirring, adding into 100 parts by weight of basic electrolyte anode containing cations such as sodium and potassium, adopting a pure nickel anode, adopting a Mn steel matrix as a cathode, and ensuring that the cathode current density is 2A/dm 2 The electrodeposition was performed at 90℃with the pH of the bath maintained at 5.0. The solution was kept under agitation during electrodeposition.
The silicon carbide modified Mn steel is obtained, and the hardness of the silicon carbide modified Mn steel is 810 according to the Rockwell hardness test method of the surface of the metal thermal spraying coating.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (10)
1. The silicon carbide wear-resistant coating material is characterized by comprising the following preparation method: dissolving tetrachlorosilane and sodium-potassium alloy in a solvent, and reacting at the temperature of 100-200 ℃ to obtain nano silicon carbide; uniformly dispersing nano silicon carbide in a water/alcohol solution to obtain nano silicon carbide dispersion liquid; dispersing fluorosilane in a water/alcohol solution, adding dilute acid, and carrying out fluorosilane hydrolysis reaction under stirring to obtain hydrolyzed fluorosilane; and uniformly mixing the nano silicon carbide dispersion liquid and the hydrolyzed fluorosilane, and fully reacting under stirring to obtain the silicon carbide wear-resistant material.
2. The silicon carbide wear-resistant coating material according to claim 1, wherein the mass ratio of tetrachlorosilane to sodium potassium alloy is (8-15): 1.
3. the silicon carbide wear-resistant coating material according to claim 1, wherein the mass ratio of the nano silicon carbide dispersion to the hydrolyzed fluorosilane is 1 (1-2).
4. The silicon carbide wear-resistant coating material according to claim 1, wherein the solvent is one or a mixture of several of carbon tetrachloride, toluene, xylene, N-dimethylformamide.
5. The silicon carbide wear resistant coating material according to claim 1, wherein the fluorosilane is any one of hexane perfluoropolyether siloxane, heptadecafluorodecyl trimethoxysilane, perfluorododecyl trichlorosilane, perfluorooctyl ethyl trisiloxane or trimethylfluorosilane.
6. Use of a silicon carbide wear resistant coating material according to any one of claims 1 to 5 as a surface coating agent for the preparation of a metal medium for vibratory mills.
7. The use according to claim 4, wherein the silicon carbide wear resistant material is dispersed in a surfactant solution; adding the electrolyte containing nano and potassium cations, wherein the anode is pure nickel, and the cathode is a metal medium.
8. The use according to claim 5, wherein the surfactant is any one of cetyltrimethylammonium bromide CTAB, sodium dodecylbenzene sulfonate SDBS and polyvinylpyrrolidone PVP.
9. The use according to claim 5 or 6, characterized in that the cathodic current density is 2A/dm 2 -10A/dm 2 The pH value of the plating solution is kept between 5.0 and 7.5 at 40 ℃ to 90 ℃ for electrodeposition.
10. The use according to claim 5 or 6, wherein the mass ratio of the surfactant solution to the electrolyte containing sodium and potassium cations is 1 (1-2).
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