CN112547463A - High-performance graphene composite aluminum sheet and preparation method and application thereof - Google Patents
High-performance graphene composite aluminum sheet and preparation method and application thereof Download PDFInfo
- Publication number
- CN112547463A CN112547463A CN202011272393.3A CN202011272393A CN112547463A CN 112547463 A CN112547463 A CN 112547463A CN 202011272393 A CN202011272393 A CN 202011272393A CN 112547463 A CN112547463 A CN 112547463A
- Authority
- CN
- China
- Prior art keywords
- aluminum sheet
- graphene composite
- graphene
- composite aluminum
- soaking
- 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.)
- Pending
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 85
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 85
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 84
- 239000002131 composite material Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 49
- 239000010439 graphite Substances 0.000 claims abstract description 49
- 238000002791 soaking Methods 0.000 claims abstract description 30
- 239000006185 dispersion Substances 0.000 claims abstract description 25
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000243 solution Substances 0.000 claims abstract description 19
- 239000011248 coating agent Substances 0.000 claims abstract description 18
- 238000000576 coating method Methods 0.000 claims abstract description 18
- 239000000017 hydrogel Substances 0.000 claims abstract description 15
- 239000007864 aqueous solution Substances 0.000 claims abstract description 11
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 229960003638 dopamine Drugs 0.000 claims abstract description 11
- 239000000499 gel Substances 0.000 claims abstract description 10
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 38
- 230000001007 puffing effect Effects 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 239000008367 deionised water Substances 0.000 claims description 15
- 229910021641 deionized water Inorganic materials 0.000 claims description 15
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 9
- 239000003822 epoxy resin Substances 0.000 claims description 9
- 229920000647 polyepoxide Polymers 0.000 claims description 9
- 230000008961 swelling Effects 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 8
- QKNYBSVHEMOAJP-UHFFFAOYSA-N 2-amino-2-(hydroxymethyl)propane-1,3-diol;hydron;chloride Chemical compound Cl.OCC(N)(CO)CO QKNYBSVHEMOAJP-UHFFFAOYSA-N 0.000 claims description 6
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 6
- 239000007853 buffer solution Substances 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- IIPYXGDZVMZOAP-UHFFFAOYSA-N lithium nitrate Chemical compound [Li+].[O-][N+]([O-])=O IIPYXGDZVMZOAP-UHFFFAOYSA-N 0.000 claims description 6
- 238000007761 roller coating Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 claims description 3
- CTENFNNZBMHDDG-UHFFFAOYSA-N Dopamine hydrochloride Chemical compound Cl.NCCC1=CC=C(O)C(O)=C1 CTENFNNZBMHDDG-UHFFFAOYSA-N 0.000 claims description 3
- 235000010323 ascorbic acid Nutrition 0.000 claims description 3
- 239000011668 ascorbic acid Substances 0.000 claims description 3
- 229960005070 ascorbic acid Drugs 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 229960001149 dopamine hydrochloride Drugs 0.000 claims description 3
- 239000011790 ferrous sulphate Substances 0.000 claims description 3
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 3
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 3
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 235000006408 oxalic acid Nutrition 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000010926 purge Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 235000010378 sodium ascorbate Nutrition 0.000 claims description 3
- PPASLZSBLFJQEF-RKJRWTFHSA-M sodium ascorbate Substances [Na+].OC[C@@H](O)[C@H]1OC(=O)C(O)=C1[O-] PPASLZSBLFJQEF-RKJRWTFHSA-M 0.000 claims description 3
- 229960005055 sodium ascorbate Drugs 0.000 claims description 3
- 239000012279 sodium borohydride Substances 0.000 claims description 3
- 229910000033 sodium borohydride Inorganic materials 0.000 claims description 3
- PPASLZSBLFJQEF-RXSVEWSESA-M sodium-L-ascorbate Chemical compound [Na+].OC[C@H](O)[C@H]1OC(=O)C(O)=C1[O-] PPASLZSBLFJQEF-RXSVEWSESA-M 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000009210 therapy by ultrasound Methods 0.000 claims description 3
- 238000009777 vacuum freeze-drying Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 239000007795 chemical reaction product Substances 0.000 claims description 2
- 239000002352 surface water Substances 0.000 claims description 2
- -1 compound graphite alkene Chemical class 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 abstract description 4
- 238000010422 painting Methods 0.000 abstract description 2
- 238000011161 development Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000001132 ultrasonic dispersion Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
- B05D3/102—Pretreatment of metallic substrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- 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
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/198—Graphene oxide
-
- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/12—Light metals
- C23G1/125—Light metals aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/20—Metallic substrate based on light metals
- B05D2202/25—Metallic substrate based on light metals based on Al
Abstract
The invention belongs to the technical field of composite aluminum sheet preparation, and discloses a high-performance graphene composite aluminum sheet, and a preparation method and application thereof, wherein the preparation method of the high-performance graphene composite aluminum sheet comprises the following steps: placing an aluminum sheet in dilute hydrochloric acid for soaking to obtain a pure aluminum sheet; placing the pure aluminum sheet in dopamine aqueous solution, soaking and cleaning to obtain a modified aluminum sheet; placing the modified aluminum sheet in graphene oxide aqueous dispersion, soaking and cleaning to obtain a graphene composite aluminum sheet; and coating the graphene hydrogel roller on the surface of the graphene composite aluminum sheet, and airing to form a graphene gel coating, so as to obtain the high-performance graphene composite aluminum sheet. The method comprises the following steps of soaking the cut aluminum sheet in a dilute hydrochloric acid solution to obtain a purer aluminum sheet; the covering and the roller painting of compound graphite alkene hydrogel coating are carried out on the aluminum sheet, and graphite alkene's heat dispersion is good, and reducible generating heat during drilling improves the drilling precision, reduces the burr, reduces the drill bit temperature.
Description
Technical Field
The invention belongs to the technical field of composite aluminum sheet preparation, and particularly relates to a high-performance graphene composite aluminum sheet and a preparation method and application thereof.
Background
At present: in recent years, with rapid development of aerospace technology, electronic communication technology, high-speed traffic field and the like, the demand for functional materials with various aspects and high performance such as better mechanical property, wear resistance, corrosion resistance and the like is increasingly strong, the use of a part of important fields is difficult to meet by the traditional single metal material, and the development of composite materials becomes a necessary trend of development.
Graphene is a hexagonal honeycomb-lattice two-dimensional carbon nanomaterial with extremely strong strength, extremely light weight, extremely high toughness and good conductivity, and can adsorb and desorb various atoms and molecules, so that the graphene material has a great development prospect in the field of material science and engineering. However, few researches on the preparation of the graphene-aluminum oxide composite coating are carried out at present, mainly because the graphene is small in size and large in specific surface area, the graphene is easy to agglomerate, and the graphene and a metal aluminum base are difficult to be tightly combined to form the composite coating. These problems severely affect the performance of metal matrix and composite materials.
Through the above analysis, the problems and defects of the prior art are as follows: the graphene has small size and large specific surface area, is easy to agglomerate, and is difficult to be tightly combined with a metal aluminum base to form a composite coating, so that the performances of the metal base and the composite material are seriously influenced.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a high-performance graphene composite aluminum sheet and a preparation method and application thereof.
The invention is realized in such a way that a preparation method of a high-performance graphene composite aluminum sheet comprises the following steps:
cutting an aluminum sheet according to a planned size, and polishing a cut surface of the cut aluminum sheet by using 80# to 120# abrasive paper to obtain the aluminum sheet with a smooth surface; soaking the obtained aluminum sheet with smooth surface in dilute hydrochloric acid for 1-2min, and taking out to obtain a pure aluminum sheet; adding dopamine hydrochloride into a Tris-HCl buffer solution to prepare a dopamine aqueous solution; placing the pure aluminum sheet in dopamine aqueous solution, soaking for 15-25min, taking out the aluminum sheet, and cleaning with deionized water to obtain a modified aluminum sheet;
step two, obtaining crystalline flake graphite, cleaning the crystalline flake graphite by using deionized water, and drying the surface water; pressing the flake graphite at a set temperature of 20-25 ℃ and a pressure of 60-70MPa to obtain flake graphite; placing the flake graphite in a mixed solution of lithium nitrate and oxalic acid, soaking for 30-40min, and taking out; putting flake graphite into a puffing chamber, and sealing a cover plate; pumping out air in the puffing chamber to make the puffing chamber in a vacuum state with the pressure below-0.1 MPa; n-hexane is selected as a swelling agent, n-hexane steam is sprayed into the swelling chamber, the temperature of the n-hexane steam is controlled at 130-140 ℃, and the pressure in the swelling chamber is controlled at 0.1-1MPa, so that the n-hexane steam is kept for soaking graphite for more than 30 min;
step three, after the normal hexane steam fully impregnates the graphite, keeping the temperature in the puffing chamber constant, discharging redundant normal hexane steam, spraying water vapor into the puffing chamber to expand the normal hexane impregnated graphite, controlling the water vapor pressure in the puffing chamber to be 0.2-0.8MPa, and stopping water vapor inflow when the temperature of the puffing chamber rises to 160 ℃; discharging condensate and normal hexane in the puffing chamber, and separating and recovering; vacuumizing the puffing chamber to the pressure below-0.1 MPa, purging and replacing residual n-hexane and water vapor in the puffing chamber by using inert gas, and drying the puffed graphite; after the puffing chamber is naturally cooled to normal temperature, opening the puffing chamber, and relieving pressure to normal pressure to obtain the micro-nano graphite capable of being puffed;
soaking the expandable micro-nano graphite in a methanol solution for 10-20min, performing ultrasonic treatment for 30-35min, filtering out solids in the soaking solution, and keeping the soaking solution; reducing sugar is added into the soak solution for reduction, and then the soak solution is placed in an environment with the temperature of minus 20 ℃ for vacuum freeze drying and crushing to obtain graphene oxide powder; ultrasonically dispersing the prepared graphene oxide powder into deionized water at the frequency of 20-30kHz for 3-5 min; obtaining graphene oxide aqueous dispersion with the concentration of 10-16 mg/ml;
placing the modified aluminum sheet in the graphene oxide aqueous dispersion obtained in the fourth step, soaking for 1-2 hours, taking out the aluminum sheet, and cleaning the aluminum sheet for 3 times by using deionized water to obtain a graphene composite aluminum sheet; ultrasonically dispersing graphene oxide powder and epoxy resin powder into deionized water to obtain graphene oxide-epoxy resin water dispersion; dispersing a reducing agent in the graphene oxide-epoxy resin aqueous dispersion to form a mixed dispersion; adjusting the pH value of the mixed dispersion liquid system to 6-9;
sixthly, reacting the mixed dispersion liquid with the adjusted pH value for 2-3h at the temperature of 50-80 ℃, taking out a reaction product, and washing to obtain the graphene hydrogel; coating a graphene hydrogel roller on the surface of a graphene composite aluminum sheet, wherein the roller coating speed is 5 m/min; the roller coating temperature is as follows: 5min at 85 ℃, 5min at 120 ℃, 5min at 145 ℃ and 3min at 90 ℃; and (5) drying to form a graphene gel coating, thus obtaining the high-performance graphene composite aluminum sheet.
Further, in the first step, the concentration of the dopamine aqueous solution is 1-2 mg/ml.
Further, in the first step, the pH of the Tris-HCl buffer solution is 8.5.
Further, in the fifth step, the reducing agent is one or a combination of more of ferrous sulfate, hydrazine hydrate, ascorbic acid, sodium ascorbate and sodium borohydride.
Further, in the sixth step, the pore size of the graphene hydrogel is 10-20 nm.
Further, in the sixth step, the thickness of the graphene gel coating is 10-30 μm.
The invention also aims to provide a high-performance graphene composite aluminum sheet prepared by the preparation method of the high-performance graphene composite aluminum sheet, wherein the high-performance graphene composite aluminum sheet consists of an aluminum sheet and a graphene gel coating.
The invention also aims to provide application of the high-performance graphene composite aluminum sheet in aerospace.
The invention also aims to provide application of the high-performance graphene composite aluminum sheet in automobile parts.
The invention also aims to provide application of the high-performance graphene composite aluminum sheet in electrical parts.
By combining all the technical schemes, the invention has the advantages and positive effects that: according to the invention, the cut aluminum sheet is soaked in the dilute hydrochloric acid solution, so that the elimination of an aluminum oxide film on the surface of the aluminum sheet can be realized, and the obtained aluminum sheet is purer; the surface of the aluminum sheet is modified by using the dopamine aqueous solution, so that the modification effect is better; the covering and the roller painting of compound graphite alkene hydrogel coating are carried out on the aluminum sheet, and graphite alkene's heat dispersion is good, and reducible generating heat during drilling improves the drilling precision, reduces the burr, reduces the drill bit temperature.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.
Fig. 1 is a flow chart of a preparation method of a high-performance graphene composite aluminum sheet provided by an embodiment of the invention.
Fig. 2 is a flowchart for performing preparation of graphene oxide powder according to an embodiment of the present invention.
Fig. 3 is a flowchart of a process for preparing expandable micro-nano graphite by using flake graphite according to an embodiment of the present invention.
Fig. 4 is a flow chart of the process for expanding graphite flakes according to an embodiment of the present invention.
Fig. 5 is a flowchart for performing preparation of a graphene hydrogel according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Aiming at the problems in the prior art, the invention provides a high-performance graphene composite aluminum sheet and a preparation method and application thereof, and the invention is described in detail below with reference to the accompanying drawings.
The high-performance graphene composite aluminum sheet provided by the embodiment of the invention is composed of an aluminum sheet and a graphene gel coating.
As shown in fig. 1, the preparation method of the high-performance graphene composite aluminum sheet provided by the embodiment of the invention comprises the following steps:
s101, cutting an aluminum sheet according to the planned size, and polishing a cutting surface of the cut aluminum sheet to obtain the aluminum sheet with a smooth surface; soaking the aluminum sheet in dilute hydrochloric acid for 1-2min, and taking out to obtain pure aluminum sheet;
s102, adding dopamine hydrochloride into a Tris-HCl buffer solution to prepare a dopamine aqueous solution, wherein the concentration of the dopamine aqueous solution is 1-2 mg/ml; placing the pure aluminum sheet in dopamine aqueous solution, soaking for 15-25min, taking out the aluminum sheet, and cleaning with deionized water to obtain a modified aluminum sheet;
s103, preparing graphene oxide powder, and ultrasonically dispersing the prepared graphene oxide powder into deionized water to obtain a graphene oxide aqueous dispersion, wherein the concentration of the graphene oxide aqueous dispersion is 10-16 mg/ml;
s104, placing the modified aluminum sheet in graphene oxide aqueous dispersion, soaking for 1-2 hours, taking out the aluminum sheet, and cleaning with deionized water to obtain a graphene composite aluminum sheet;
s105, preparing the graphene hydrogel, coating the graphene hydrogel roller on the surface of the graphene composite aluminum sheet, and airing to form a graphene gel coating to obtain the high-performance graphene composite aluminum sheet.
In step S102, the pH of the Tris-HCl buffer solution provided in the embodiment of the present invention is 8.5.
As shown in fig. 2, in step S103, the preparation of the graphene oxide powder according to the embodiment of the present invention includes:
s201, preparing expandable micro-nano graphite by using flake graphite;
s202, placing the expandable micro-nano graphite in a methanol solution for soaking for 10-20min, performing ultrasonic treatment for 30-35min, filtering out solids in a soaking solution, and keeping the soaking solution;
s203, reducing sugar is added into the soaking solution for reduction, then the soaking solution is placed in an environment with the temperature of minus 20 ℃ for vacuum freeze drying, and the graphene oxide powder is crushed.
As shown in fig. 3, in step S201, the preparation of the expandable micro-nano graphite by using flake graphite according to the embodiment of the present invention includes:
s301, cleaning the scale graphite by using deionized water, and drying the surface to remove moisture;
s302, pressing flake graphite at the set temperature of 20-25 ℃ and the pressure of 60-70MPa to obtain flake graphite;
s303, placing the flake graphite into a mixed solution of lithium nitrate and oxalic acid, soaking for 30-40min, and taking out;
s304, carrying out expansion treatment on the flake graphite to obtain the expandable micro-nano graphite.
As shown in fig. 4, in step S304, the expanding process for graphite flakes according to the embodiment of the present invention includes:
s401, putting flake graphite into a puffing chamber, and sealing a cover plate; pumping out air in the puffing chamber to make the puffing chamber in a vacuum state with the pressure below-0.1 MPa;
s402, selecting normal hexane as a swelling agent, spraying normal hexane steam into a swelling chamber, controlling the temperature of the normal hexane steam to be 130-140 ℃, and controlling the pressure in the swelling chamber to be 0.1-1MPa, so that the normal hexane steam is maintained for soaking graphite for more than 30 min;
s403, after the normal hexane steam fully impregnates the graphite, keeping the temperature in the puffing chamber constant, discharging redundant normal hexane steam, and spraying water vapor into the puffing chamber to expand the normal hexane impregnated graphite;
s404, controlling the pressure of the water vapor in the puffing chamber to be 0.2-0.8MPa, and stopping water vapor inflow when the temperature of the puffing chamber rises to 160 ℃; discharging condensate and normal hexane in the puffing chamber, and separating and recovering;
s405, vacuumizing the puffing chamber to the pressure below-0.1 MPa, purging and replacing residual n-hexane and water vapor in the puffing chamber by using inert gas, and drying the puffed graphite; and opening the puffing chamber after the puffing chamber is naturally cooled to normal temperature, and relieving pressure to normal pressure to obtain the expandable micro-nano graphite.
In step S103, the ultrasonic dispersion frequency provided by the embodiment of the present invention is 20 to 30kHz, and the ultrasonic dispersion time is 3 to 5 min.
As shown in fig. 5, in step S105, the preparation of the graphene hydrogel according to the embodiment of the present invention includes:
s501, ultrasonically dispersing graphene oxide powder and epoxy resin powder into deionized water to obtain graphene oxide-epoxy resin water dispersion;
s502, dispersing a reducing agent in the graphene oxide-epoxy resin water dispersion to form a mixed dispersion;
s503, adjusting the pH value of the mixed dispersion liquid system to 6-9;
and S504, reacting the mixed dispersion liquid with the adjusted pH value for 2-3h at the temperature of 50-80 ℃, taking out a product, and washing to obtain the graphene hydrogel.
In step S502, the reducing agent provided in the embodiment of the present invention is one or a combination of ferrous sulfate, hydrazine hydrate, ascorbic acid, sodium ascorbate, and sodium borohydride.
In step S504, the pore size of the graphene hydrogel provided in the embodiment of the present invention is 10 to 20 nm.
In step S105, the speed of the roll coating provided by the embodiment of the present invention is 5 m/min; the roller coating temperature is as follows: 5min at 85 ℃, 5min at 120 ℃, 5min at 145 ℃ and 3min at 90 ℃.
In step S105, the thickness of the graphene gel coat provided in the embodiment of the present invention is 10 to 30 μm.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made by those skilled in the art within the technical scope of the present invention disclosed herein, which is within the spirit and principle of the present invention, should be covered by the present invention.
Claims (10)
1. The preparation method of the high-performance graphene composite aluminum sheet is characterized by comprising the following steps:
cutting an aluminum sheet according to a planned size, and polishing a cut surface of the cut aluminum sheet by using 80# to 120# abrasive paper to obtain the aluminum sheet with a smooth surface; soaking the obtained aluminum sheet with smooth surface in dilute hydrochloric acid for 1-2min, and taking out to obtain a pure aluminum sheet; adding dopamine hydrochloride into a Tris-HCl buffer solution to prepare a dopamine aqueous solution; placing the pure aluminum sheet in dopamine aqueous solution, soaking for 15-25min, taking out the aluminum sheet, and cleaning with deionized water to obtain a modified aluminum sheet;
step two, obtaining crystalline flake graphite, cleaning the crystalline flake graphite by using deionized water, and drying the surface water; pressing the flake graphite at a set temperature of 20-25 ℃ and a pressure of 60-70MPa to obtain flake graphite; placing the flake graphite in a mixed solution of lithium nitrate and oxalic acid, soaking for 30-40min, and taking out; putting flake graphite into a puffing chamber, and sealing a cover plate; pumping out air in the puffing chamber to make the puffing chamber in a vacuum state with the pressure below-0.1 MPa; n-hexane is selected as a swelling agent, n-hexane steam is sprayed into the swelling chamber, the temperature of the n-hexane steam is controlled at 130-140 ℃, and the pressure in the swelling chamber is controlled at 0.1-1MPa, so that the n-hexane steam is kept for soaking graphite for more than 30 min;
step three, after the normal hexane steam fully impregnates the graphite, keeping the temperature in the puffing chamber constant, discharging redundant normal hexane steam, spraying water vapor into the puffing chamber to expand the normal hexane impregnated graphite, controlling the water vapor pressure in the puffing chamber to be 0.2-0.8MPa, and stopping water vapor inflow when the temperature of the puffing chamber rises to 160 ℃; discharging condensate and normal hexane in the puffing chamber, and separating and recovering; vacuumizing the puffing chamber to the pressure below-0.1 MPa, purging and replacing residual n-hexane and water vapor in the puffing chamber by using inert gas, and drying the puffed graphite; after the puffing chamber is naturally cooled to normal temperature, opening the puffing chamber, and relieving pressure to normal pressure to obtain the micro-nano graphite capable of being puffed;
soaking the expandable micro-nano graphite in a methanol solution for 10-20min, performing ultrasonic treatment for 30-35min, filtering out solids in the soaking solution, and keeping the soaking solution; reducing sugar is added into the soak solution for reduction, and then the soak solution is placed in an environment with the temperature of minus 20 ℃ for vacuum freeze drying and crushing to obtain graphene oxide powder; ultrasonically dispersing the prepared graphene oxide powder into deionized water at the frequency of 20-30kHz for 3-5 min; obtaining graphene oxide aqueous dispersion with the concentration of 10-16 mg/ml;
placing the modified aluminum sheet in the graphene oxide aqueous dispersion obtained in the fourth step, soaking for 1-2 hours, taking out the aluminum sheet, and cleaning the aluminum sheet for 3 times by using deionized water to obtain a graphene composite aluminum sheet; ultrasonically dispersing graphene oxide powder and epoxy resin powder into deionized water to obtain graphene oxide-epoxy resin water dispersion; dispersing a reducing agent in the graphene oxide-epoxy resin aqueous dispersion to form a mixed dispersion; adjusting the pH value of the mixed dispersion liquid system to 6-9;
sixthly, reacting the mixed dispersion liquid with the adjusted pH value for 2-3h at the temperature of 50-80 ℃, taking out a reaction product, and washing to obtain the graphene hydrogel; coating a graphene hydrogel roller on the surface of a graphene composite aluminum sheet, wherein the roller coating speed is 5 m/min; the roller coating temperature is as follows: 5min at 85 ℃, 5min at 120 ℃, 5min at 145 ℃ and 3min at 90 ℃; and (5) drying to form a graphene gel coating, thus obtaining the high-performance graphene composite aluminum sheet.
2. The method for preparing the high-performance graphene composite aluminum sheet according to claim 1, wherein in the first step, the concentration of the dopamine aqueous solution is 1-2 mg/ml.
3. The method for preparing the high-performance graphene composite aluminum sheet according to claim 1, wherein in the first step, the Tris-HCl buffer solution has a pH of 8.5.
4. The method for preparing the high-performance graphene composite aluminum sheet according to claim 1, wherein in the fifth step, the reducing agent is one or a combination of ferrous sulfate, hydrazine hydrate, ascorbic acid, sodium ascorbate and sodium borohydride.
5. The method for preparing the high-performance graphene composite aluminum sheet according to claim 1, wherein in the sixth step, the pore diameter of the graphene hydrogel is 10-20 nm.
6. The method for preparing the high-performance graphene composite aluminum sheet according to claim 1, wherein in the sixth step, the thickness of the graphene gel coat is 10-30 μm.
7. The high-performance graphene composite aluminum sheet prepared by the preparation method of the high-performance graphene composite aluminum sheet according to claims 1 to 6, wherein the high-performance graphene composite aluminum sheet is composed of an aluminum sheet and a graphene gel coating.
8. The use of the high performance graphene composite aluminum sheet of claim 7 in aerospace.
9. The use of the high-performance graphene composite aluminum sheet as claimed in claim 7 in automobile parts.
10. The use of the high-performance graphene composite aluminum sheet as claimed in claim 7 in electrical parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011272393.3A CN112547463A (en) | 2020-11-14 | 2020-11-14 | High-performance graphene composite aluminum sheet and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011272393.3A CN112547463A (en) | 2020-11-14 | 2020-11-14 | High-performance graphene composite aluminum sheet and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112547463A true CN112547463A (en) | 2021-03-26 |
Family
ID=75042248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011272393.3A Pending CN112547463A (en) | 2020-11-14 | 2020-11-14 | High-performance graphene composite aluminum sheet and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112547463A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113293321A (en) * | 2021-05-06 | 2021-08-24 | 江苏轩辕特种材料科技有限公司 | High-strength alloy material wear-resistant treatment material and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105695804A (en) * | 2016-01-29 | 2016-06-22 | 北京理工大学 | Preparation method of high-thermal-conductivity aluminum base graphene composite material |
| CN106215817A (en) * | 2016-07-12 | 2016-12-14 | 华南理工大学 | A kind of preparation method of internal structure adjustable Graphene hydrogel |
| CN108559225A (en) * | 2018-04-28 | 2018-09-21 | 济宁学院 | A kind of preparation method of graphene/ethoxyline resin antiflaming composite material |
| CN108946714A (en) * | 2018-09-05 | 2018-12-07 | 七台河宝泰隆石墨烯新材料有限公司 | The method that green, quick magnanimity prepares graphene oxide |
| CN110980723A (en) * | 2019-12-27 | 2020-04-10 | 洛阳森蓝化工材料科技有限公司 | Graphite puffing treatment process |
| CN111117443A (en) * | 2019-11-12 | 2020-05-08 | 新疆烯金石墨烯科技有限公司 | Graphene heat dissipation coating for aluminum electrolytic capacitor, graphene heat dissipation material and preparation method of graphene heat dissipation coating |
-
2020
- 2020-11-14 CN CN202011272393.3A patent/CN112547463A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105695804A (en) * | 2016-01-29 | 2016-06-22 | 北京理工大学 | Preparation method of high-thermal-conductivity aluminum base graphene composite material |
| CN106215817A (en) * | 2016-07-12 | 2016-12-14 | 华南理工大学 | A kind of preparation method of internal structure adjustable Graphene hydrogel |
| CN108559225A (en) * | 2018-04-28 | 2018-09-21 | 济宁学院 | A kind of preparation method of graphene/ethoxyline resin antiflaming composite material |
| CN108946714A (en) * | 2018-09-05 | 2018-12-07 | 七台河宝泰隆石墨烯新材料有限公司 | The method that green, quick magnanimity prepares graphene oxide |
| CN111117443A (en) * | 2019-11-12 | 2020-05-08 | 新疆烯金石墨烯科技有限公司 | Graphene heat dissipation coating for aluminum electrolytic capacitor, graphene heat dissipation material and preparation method of graphene heat dissipation coating |
| CN110980723A (en) * | 2019-12-27 | 2020-04-10 | 洛阳森蓝化工材料科技有限公司 | Graphite puffing treatment process |
Non-Patent Citations (2)
| Title |
|---|
| 傅高升: "《汽车材料》", 31 August 2011, 山东大学出版社 * |
| 钱苗根: "《材料表面技术及其应用手册》", 30 November 1998, 机械工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113293321A (en) * | 2021-05-06 | 2021-08-24 | 江苏轩辕特种材料科技有限公司 | High-strength alloy material wear-resistant treatment material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108339536B (en) | One-step preparation method of CMC/PEI double-network hydrogel capable of efficiently removing Cr (VI) | |
| CN111710845A (en) | Silica composite negative electrode material, preparation method thereof and lithium ion battery | |
| CN105463224A (en) | TiCx-Al2O3-TiAl3/Al base composite material and manufacturing method thereof | |
| CN105271437B (en) | Method for preparing carbonyl iron powder absorbent for low-frequency electromagnetic wave absorption material | |
| CN101288837A (en) | Preparation method of carbon-silicon compound aerogel | |
| CN112547463A (en) | High-performance graphene composite aluminum sheet and preparation method and application thereof | |
| CN108183219A (en) | A kind of lithium ion battery anode slurry based on graphene-silicon dioxide composite aerogel and preparation method thereof | |
| CN109354018A (en) | A kind of preparation method of High surface area carbon microbeads | |
| CN111636024B (en) | WC-Ni-Cr/Ta composite material hard alloy and preparation method and application thereof | |
| CN110480004A (en) | The method that hydro-thermal method prepares carbon-coated aluminum nanoparticles | |
| CN111151765A (en) | Preparation method of three-dimensional structure nano carbon material reinforced copper-based composite material | |
| CN110117732A (en) | A method of MgO protective layer is coated on cenosphere surface | |
| CN107460030B (en) | Graphene automobile engine oil | |
| CN107488329B (en) | Method for large-scale preparation of aqueous graphene epoxy resin nanocomposite | |
| CN111155039A (en) | Preparation process of carbon nano tube reinforced titanium-based composite material | |
| CN113106439B (en) | Anti-corrosion composite coating on surface of magnesium alloy and preparation method and application thereof | |
| CN109434111B (en) | Pore diameter controllable foamed aluminum supercritical preparation method | |
| CN1404950A (en) | Method for preapaing nano nickel and its alloy powder in water solution by chemical reduction method | |
| CN108163845B (en) | Preparation method of porous graphene material | |
| CN107098343A (en) | A kind of CaCl2Gu the method that sulphur prepares nitrogen sulphur codope porous carbon materials | |
| CN101856725A (en) | Method for preparing superfine nickel powder by direct reduction | |
| CN111916694B (en) | Preparation method of graphene iron-based composite material | |
| CN113817520B (en) | Composition capable of improving hydrate stability and solid hydrate-based storage and transportation method | |
| CN113817449B (en) | Composite phase change material, solid hydrate promoting agent, preparation method of solid hydrate promoting agent and method for improving gas storage and transportation capacity of solid hydrate method | |
| CN113645822A (en) | Porous hollow graphitized carbon electromagnetic wave absorption material and preparation method 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210326 |
|
| RJ01 | Rejection of invention patent application after publication |