CN116640508A - Construction graphene bionic super-hydrophobic coating and manufacturing process thereof - Google Patents
Construction graphene bionic super-hydrophobic coating and manufacturing process thereof Download PDFInfo
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- 239000011248 coating agent Substances 0.000 title claims abstract description 64
- 238000000576 coating method Methods 0.000 title claims abstract description 64
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 40
- 230000003075 superhydrophobic effect Effects 0.000 title claims abstract description 39
- 239000011664 nicotinic acid Substances 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000010276 construction Methods 0.000 title abstract description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 22
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000007822 coupling agent Substances 0.000 claims abstract description 18
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229920005989 resin Polymers 0.000 claims abstract description 18
- 239000011347 resin Substances 0.000 claims abstract description 18
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 18
- 239000010703 silicon Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000003822 epoxy resin Substances 0.000 claims abstract description 13
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 13
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 10
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 24
- 239000011259 mixed solution Substances 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 16
- 238000000498 ball milling Methods 0.000 claims description 15
- 239000000725 suspension Substances 0.000 claims description 15
- 239000003973 paint Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000003302 UV-light treatment Methods 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 5
- 239000002086 nanomaterial Substances 0.000 claims description 5
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 3
- 238000005286 illumination Methods 0.000 claims description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract description 50
- 239000011787 zinc oxide Substances 0.000 abstract description 25
- 239000002245 particle Substances 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 13
- 230000004048 modification Effects 0.000 abstract description 7
- 238000012986 modification Methods 0.000 abstract description 7
- 230000002776 aggregation Effects 0.000 abstract description 6
- 238000005054 agglomeration Methods 0.000 abstract description 5
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003592 biomimetic effect Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000010147 laser engraving Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
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- 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
- 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
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- 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
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
- Carbon And Carbon Compounds (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention provides a method for constructing a graphene bionic super-hydrophobic coating and a manufacturing process thereof, and relates to the field of super-hydrophobic materials. The bionic super-hydrophobic coating based on the construction of graphene comprises 20 parts of organic silicon resin, 15 parts of graphene, 3 parts of ethyl acetate, 3 parts of epoxy resin, 3 parts of nano ZnO, 3 parts of siloxane coupling agent and 3 parts of nano silicon dioxide. The zinc oxide is treated by the siloxane coupling agents with different pH values and is subjected to light treatment, so that the hardness of the coating is increased, the service life of the coating is prolonged, the surface modification effect on nano zinc oxide particles is good, the particle agglomeration is less, the influence on the ultraviolet shielding effect of the particles is minimal, and the coating is ensured to have good oxidation resistance and good deformation resistance Huang Nengli by adding the organic silicon resin and the epoxy resin.
Description
Technical Field
The invention relates to the technical field of super-hydrophobic materials, in particular to a method for constructing a graphene bionic super-hydrophobic coating and a manufacturing process thereof.
Background
At present, the preparation of the super-hydrophobic material can adopt laser to engrave on the surface of the material or process the material through a coating, but the laser engraving method is difficult to be applied to the surface of graphene, so that the super-hydrophobic coating is required, the development of the super-hydrophobic bionic material is long, the super-hydrophobic bionic material can automatically clean places which need to be cleaned, and can also be placed on the surface of metal to prevent external corrosion. The super-hydrophobic material is a material with repellency to water, and water drops cannot slide and spread on the surface of the material to keep a ball rolling shape, so that the rolling self-cleaning effect is achieved. Wettability is one of the important properties of a solid material surface, and key factors that determine the wettability of a material surface include the chemical composition of the material surface and the microscopic geometry of the surface. Therefore, scientists refer to a surface with a static water contact angle of more than 150 degrees and a rolling angle of less than 10 degrees as a super-hydrophobic surface. The super-hydrophobic material generally has a micro-nano composite structure and a chemical substance with low surface energy, which is also a precondition for becoming the super-hydrophobic material. The super-hydrophobic surface has the excellent characteristics of self cleaning, oil-water separation, corrosion resistance, ice resistance, fog resistance and the like, but the current coating has weak scratch resistance, and the use of the coating is affected.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a method for constructing a graphene bionic super-hydrophobic coating and a manufacturing process thereof, and solves the problems of low scratch resistance and reduced hydrophobic property caused by long-time use.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: a method for constructing a graphene biomimetic superhydrophobic coating, comprising:
20 parts of organic silicon resin, 15 parts of graphene, 3 parts of ethyl acetate, 3 parts of epoxy resin, 3 parts of nano ZnO, 3 parts of siloxane coupling agent and 3 parts of nano silicon dioxide.
Preferably, the phenyl content is between 40% and 60%, the bending resistance and the heat resistance of a paint film are best, the concentration of the siloxane coupling agent is 1.0% to 1.5%, and when the PH is 9.0 to 9.5, the surface modification effect on nano zinc oxide particles is better, the particle aggregation is less, and meanwhile, the influence on the ultraviolet shielding effect of the particles is minimum.
Preferably, the silica has a diameter of 15nm, a surface area ratio of 250 square meters per gram and a bulk density of 0.1 to 0.15 g/cm.
The manufacturing process for constructing the graphene bionic super-hydrophobic coating is characterized by comprising the following steps of:
s1, selecting the organic silicon resin and the graphene with the components, adding the organic silicon resin into the graphene, and stirring under the condition of no airflow disturbance;
s2, respectively adding ethyl acetate and epoxy resin in the stirring process to complete the mixed base material;
s3, adding nano ZnO into deionized water, adding the deionized water into a ball milling tank, respectively adding 1% and 1.5% of siloxane coupling agent to adjust the pH value of the mixed solution to 9, and stirring for 2 hours to fully and uniformly mix the mixed solution to obtain a mixed solution;
s4, placing the mixed solution into an oven to be dried at the temperature of 85 ℃, placing the dried ZnO into a wide-mouth plastic bottle, adding ethylene glycol, ball-milling for 24 hours to obtain a ZnO/ethylene glycol mixture, and adjusting the pH value of the mixture to 9-9.5 to obtain slurry;
s5, adding the slurry into a base material, and magnetically stirring to obtain a coating suspension;
s6, adding the obtained coating suspension into a spray gun, spraying the coating suspension on the surfaces of all the base materials to form a bionic super-hydrophobic coating with a micro-nano scale structure, and then carrying out UV light treatment.
Preferably, the resulting coating requires a long bake at an elevated temperature of 200-250 ℃ to cure it.
Preferably, the spraying method in S6 is that the pressure of the nozzle is controlled to be less than 1bar, the angle of the nozzle is 45 degrees, and the distance between the spray gun and the substrate is 10-15cm from one side to the other side.
Preferably, the UV light treatment in S6 is performed for several times, so that the wear resistance and scratch resistance of the paint film are improved, the power of the UV lamp is kept above 2200W by increasing illumination, the paint film is insufficient in exposure, the surface is not thoroughly cured, the hardness is lower, the surface defects are more, and the paint film is easy to wipe and disturb.
Preferably, the grinding balls of the ball milling tank are made of low carbon steel with the diameter of 2 cm.
(III) beneficial effects
The invention provides a method for constructing a graphene bionic super-hydrophobic coating and a manufacturing process thereof. The beneficial effects are as follows:
1. the zinc oxide is treated by the siloxane coupling agents with different pH values and the hardness of the coating is increased by illumination treatment, the service life of the coating is prolonged, the surface modification effect on the nano zinc oxide particles is good, the particle agglomeration is less, and the influence on the ultraviolet shielding effect of the particles is minimal.
2. By adding the organic silicon resin and the epoxy resin, the coating is ensured to have better oxidation resistance and better deformation resistance Huang Nengli.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
the embodiment of the invention provides a graphene bionic super-hydrophobic coating, which comprises 20 parts of organic silicon resin, 15 parts of graphene, 3 parts of ethyl acetate, 3 parts of epoxy resin, 3 parts of nano ZnO, 3 parts of siloxane coupling agent and 3 parts of nano silicon dioxide, wherein the phenyl content is 40 percent, the bending resistance and the heat resistance of a paint film are best, the concentration of the siloxane coupling agent is 1.0 percent, when the PH is 9.0, the surface modification effect on nano zinc oxide particles is better, the particle agglomeration is less, the influence on the ultraviolet shielding effect of the particles is minimum, the diameter of the silicon dioxide is 15nm, the surface area ratio is 250 square meters per gram, and the apparent density is 0.1-0.15 g/cm.
A manufacturing process for constructing a graphene bionic super-hydrophobic coating comprises the following steps: s1, selecting the organic silicon resin and the graphene with the components, adding the organic silicon resin into the graphene, stirring under the condition of no air flow disturbance, S2, respectively adding ethyl acetate and epoxy resin in the stirring process to finish a mixed base material, S3, adding nano ZnO into deionized water into a ball milling tank, respectively adding 1% of siloxane coupling agent to adjust the pH value of the mixed solution to 9, stirring for 2 hours to fully and uniformly mix the mixed solution to obtain mixed solution, S4, putting the mixed solution into an oven to dry at 85 ℃, putting the dried ZnO into a wide-mouth plastic bottle, adding glycol, ball milling for 24 hours to obtain a ZnO/glycol mixture, preparing the ball milling tank from low carbon steel with the diameter of 2 cm, adjusting the pH value of the mixture to 9-9.5 to obtain slurry, S5, adding the slurry into the base material, and magnetically stirring to obtain a coating suspension, S6, adding the obtained coating suspension into a spray gun, spraying the coating suspension on the surface of each substrate to form a bionic super-hydrophobic coating with a micro-nano scale structure, and then carrying out UV light treatment, wherein the obtained coating needs to be baked for a long time at a high temperature of 200-250 ℃ for curing, the spraying method in S6 is that the pressure of a nozzle is controlled below 1bar, the angle of the nozzle is 45 degrees, the distance between the spray gun and a substrate is 10-15cm, the UV light treatment in S6 is carried out for more times, and the coating is more than a few times of machine irradiation, so that the wear resistance and scratch resistance of a paint film are improved, the power of an UV lamp is kept above 2200W, the paint film is insufficient in exposure, the surface is not thoroughly cured, the hardness is lower, the surface defects are more, and the coating is easy to wipe and disorder is easy.
Embodiment two:
the embodiment of the invention provides a graphene bionic super-hydrophobic coating, which comprises 20 parts of organic silicon resin, 15 parts of graphene, 3 parts of ethyl acetate, 3 parts of epoxy resin, 3 parts of nano ZnO, 3 parts of siloxane coupling agent and 3 parts of nano silicon dioxide, wherein the phenyl content is between 50, the bending resistance and heat resistance of a paint film are best, the concentration of the siloxane coupling agent is 1.25%, when the PH is 9.25, the surface modification effect on nano zinc oxide particles is better, the particle agglomeration is less, the influence on the ultraviolet shielding effect of the particles is minimum, the diameter of the silicon dioxide is 15nm, the surface area ratio is 250 square meters per gram, and the loose density is 0.1-0.15 g/cm.
A manufacturing process for constructing a graphene bionic super-hydrophobic coating comprises the following steps: s1, selecting the organic silicon resin and the graphene with the components, adding the organic silicon resin into the graphene, stirring under the condition of no air flow disturbance, S2, respectively adding ethyl acetate and epoxy resin in the stirring process to finish a mixed substrate, S3, adding nano ZnO into deionized water into a ball milling tank, respectively adding 1% of siloxane coupling agent to adjust the pH value of the mixed solution to 9, stirring for 2 hours to fully and uniformly mix the mixed solution to obtain mixed solution, S4, putting the mixed solution into an oven to dry at 85 ℃, putting the dried ZnO into a wide-mouth plastic bottle, adding glycol, ball milling for 24 hours to obtain a ZnO/glycol mixture, preparing the ball milling tank from low carbon steel with the diameter of 2 cm, adjusting the pH value of the mixture to 9 to obtain slurry, S5, adding the slurry into the substrate, and magnetically stirring to obtain a coating suspension, S6, adding the obtained coating suspension into a spray gun, spraying the coating suspension on the surface of each substrate to form a bionic super-hydrophobic coating with a micro-nano scale structure, and then carrying out UV light treatment, wherein the obtained coating needs to be baked for a long time at a high temperature of 200-250 ℃ for curing, the spraying method in S6 is that the pressure of a nozzle is controlled below 1bar, the angle of the nozzle is 45 degrees, the distance between the spray gun and a substrate is 10-15cm, the UV light treatment in S6 is carried out for more times, and the coating is more than a few times of machine irradiation, so that the wear resistance and scratch resistance of a paint film are improved, the power of an UV lamp is kept above 2200W, the paint film is insufficient in exposure, the surface is not thoroughly cured, the hardness is lower, the surface defects are more, and the coating is easy to wipe and disorder is easy.
Embodiment III:
the embodiment of the invention provides a graphene bionic super-hydrophobic coating, which comprises 20 parts of organic silicon resin, 15 parts of graphene, 3 parts of ethyl acetate, 3 parts of epoxy resin, 3 parts of nano ZnO, 3 parts of siloxane coupling agent and 3 parts of nano silicon dioxide, wherein the phenyl content is between 60%, the bending resistance and heat resistance of a paint film are best, the concentration of the siloxane coupling agent is 1.5%, when the PH is 9.5, the surface modification effect on nano zinc oxide particles is better, the particle agglomeration is less, the influence on the ultraviolet shielding effect of the particles is minimum, the diameter of the silicon dioxide is 15nm, the surface area ratio is 250 square meters per gram, and the loose density is 0.1-0.15 g/cm.
A manufacturing process for constructing a graphene bionic super-hydrophobic coating comprises the following steps: s1, selecting the organic silicon resin and the graphene with the components, adding the organic silicon resin into the graphene, stirring under the condition of no air flow disturbance, S2, respectively adding ethyl acetate and epoxy resin in the stirring process to finish a mixed base material, S3, adding nano ZnO into deionized water into a ball milling tank, respectively adding 1.5% of siloxane coupling agent to adjust the pH value of the mixed solution to 9, stirring for 2 hours to fully and uniformly mix the mixed solution to obtain the mixed solution, S4, putting the mixed solution into an oven to dry at 85 ℃, putting the dried ZnO into a wide-mouth plastic bottle, adding glycol, ball milling for 24 hours to obtain a ZnO/glycol mixture, preparing grinding balls of the ball milling tank from low carbon steel with the diameter of 2 cm, adjusting the pH value of the mixture to 9.5 to obtain slurry, S5, adding the slurry into the base material, and magnetically stirring to obtain a coating suspension, S6, adding the obtained coating suspension into a spray gun, spraying the coating suspension on the surface of each substrate to form a bionic super-hydrophobic coating with a micro-nano scale structure, and then carrying out UV light treatment, wherein the obtained coating needs to be baked for a long time at a high temperature of 200-250 ℃ for curing, the spraying method in S6 is that the pressure of a nozzle is controlled below 1bar, the angle of the nozzle is 45 degrees, the distance between the spray gun and a substrate is 10-15cm, the UV light treatment in S6 is carried out for more times, and the coating is more than a few times of machine irradiation, so that the wear resistance and scratch resistance of a paint film are improved, the power of an UV lamp is kept above 2200W, the paint film is insufficient in exposure, the surface is not thoroughly cured, the hardness is lower, the surface defects are more, and the coating is easy to wipe and disorder is easy.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. Constructing the graphene bionic super-hydrophobic coating is characterized by comprising the following steps of:
20 parts of organic silicon resin, 15 parts of graphene, 3 parts of ethyl acetate, 3 parts of epoxy resin, 3 parts of nano ZnO, 3 parts of siloxane coupling agent and 3 parts of nano silicon dioxide.
2. The method for constructing the graphene bionic super-hydrophobic coating according to claim 1, which is characterized in that: the phenyl content is between 40% and 60%, the concentration of the siloxane coupling agent is 1.0% to 1.5%, and the PH is 9.0 to 9.5.
3. The method for constructing the graphene bionic super-hydrophobic coating according to claim 1, which is characterized in that: the silicon dioxide has the diameter of 15nm, the surface area ratio of 250 square meters per gram and the apparent density of 0.1-0.15 g/cm.
4. A manufacturing process for constructing a graphene bionic super-hydrophobic coating is characterized by comprising the following steps of: the method comprises the following steps:
s1, selecting the organic silicon resin and the graphene with the components, adding the organic silicon resin into the graphene, and stirring under the condition of no airflow disturbance;
s2, respectively adding ethyl acetate and epoxy resin in the stirring process to complete the mixed base material;
s3, adding nano ZnO into deionized water, adding the deionized water into a ball milling tank, respectively adding 1% and 1.5% of siloxane coupling agent to adjust the pH value of the mixed solution to 9, and stirring for 2 hours to fully and uniformly mix the mixed solution to obtain a mixed solution;
s4, placing the mixed solution into an oven to be dried at the temperature of 85 ℃, placing the dried ZnO into a wide-mouth plastic bottle, adding ethylene glycol, ball-milling for 24 hours to obtain a ZnO/ethylene glycol mixture, and adjusting the pH value of the mixture to 9-9.5 to obtain slurry;
s5, adding the slurry into a base material, and magnetically stirring to obtain a coating suspension;
s6, adding the obtained coating suspension into a spray gun, spraying the coating suspension on the surfaces of all the base materials to form a bionic super-hydrophobic coating with a micro-nano scale structure, and then carrying out UV light treatment.
5. The manufacturing process for constructing the graphene bionic super-hydrophobic coating, as claimed in claim 4, is characterized in that: the resulting coating requires a long bake at a high temperature of 200-250 c to cure it.
6. The manufacturing process for constructing the graphene bionic super-hydrophobic coating, as claimed in claim 4, is characterized in that: the spraying method in the step S6 is that the pressure of the nozzle is controlled to be less than 1bar from one side to the other side, the angle of the nozzle is 45 degrees, and the distance between the spray gun and the substrate is 10 cm to 15cm.
7. The manufacturing process for constructing the graphene bionic super-hydrophobic coating, as claimed in claim 4, is characterized in that: the UV light treatment in S6 is carried out for several times, so that the wear resistance and scratch resistance of a paint film are improved, and the power of the UV lamp is kept above 2200W by increasing the illumination.
8. The manufacturing process for constructing the graphene bionic super-hydrophobic coating, as claimed in claim 4, is characterized in that: the grinding balls of the ball milling tank are made of low carbon steel with the diameter of 2 cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310507426.5A CN116640508A (en) | 2023-05-08 | 2023-05-08 | Construction graphene bionic super-hydrophobic coating and manufacturing process thereof |
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| CN202310507426.5A CN116640508A (en) | 2023-05-08 | 2023-05-08 | Construction graphene bionic super-hydrophobic coating and manufacturing process thereof |
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