CN114196319A - Organic silicon coating with micro-nano porous structure on surface and preparation method thereof - Google Patents
Organic silicon coating with micro-nano porous structure on surface and preparation method thereof Download PDFInfo
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- CN114196319A CN114196319A CN202111389338.7A CN202111389338A CN114196319A CN 114196319 A CN114196319 A CN 114196319A CN 202111389338 A CN202111389338 A CN 202111389338A CN 114196319 A CN114196319 A CN 114196319A
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- 239000011248 coating agent Substances 0.000 title claims abstract description 58
- 238000000576 coating method Methods 0.000 title claims abstract description 58
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 41
- 239000010703 silicon Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 238000005507 spraying Methods 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 16
- 239000012046 mixed solvent Substances 0.000 claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 11
- 239000011347 resin Substances 0.000 claims abstract description 11
- 239000000945 filler Substances 0.000 claims abstract description 8
- 239000003960 organic solvent Substances 0.000 claims abstract description 8
- 239000003054 catalyst Substances 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 6
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical group CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 6
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical group CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 6
- -1 bis-hydroxymethyl Chemical group 0.000 claims description 6
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000006229 carbon black Substances 0.000 claims description 4
- 229920002050 silicone resin Polymers 0.000 claims description 4
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000008367 deionised water Substances 0.000 claims description 2
- 229910021641 deionized water Inorganic materials 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 2
- LYGJENNIWJXYER-UHFFFAOYSA-N nitromethane Chemical compound C[N+]([O-])=O LYGJENNIWJXYER-UHFFFAOYSA-N 0.000 claims description 2
- 239000008096 xylene Substances 0.000 claims description 2
- 239000004447 silicone coating Substances 0.000 claims 1
- 230000003075 superhydrophobic effect Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 239000002086 nanomaterial Substances 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 239000005543 nano-size silicon particle Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 229910021392 nanocarbon Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011247 coating layer Substances 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
- 230000007123 defense Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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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
-
- 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
- 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
- C09D7/20—Diluents or solvents
-
- 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
-
- 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
- B05D2518/00—Other type of polymers
- B05D2518/10—Silicon-containing polymers
-
- 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
- B05D2601/00—Inorganic fillers
- B05D2601/20—Inorganic fillers used for non-pigmentation effect
-
- 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
- B05D2601/00—Inorganic fillers
- B05D2601/20—Inorganic fillers used for non-pigmentation effect
- B05D2601/22—Silica
-
- 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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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides an organic silicon coating with a micro-nano porous structure on the surface and a preparation method thereof, wherein the organic silicon coating comprises the following components in parts by mass: 100 parts of organic silicon resin; 1-2 parts of a catalyst; n parts of nano filler; 3-5 parts of curing agent and n parts; 400-800 parts of a mixed solvent; wherein n is 0-3; the mixed solvent includes water, a hydrophilic organic solvent, and a hydrophobic organic solvent. During preparation, the organic silicon coating with the micro-nano porous structure is directly prepared on the surface of a base material or a product in an air spraying mode, and the organic silicon coating has important application in the aspects of improving the anti-reflection performance, the super-hydrophobic performance and the like of materials.
Description
Technical Field
The invention belongs to the technical field of surface engineering, and particularly relates to an organic silicon coating with a micro-nano porous surface structure on the surface and a preparation method thereof.
Background
The organic silicon coating has the performances of hydrophobicity, moisture resistance, high temperature resistance, corrosion resistance and the like, and has important application prospects in national defense, military industry and civil markets. The surface micro-nano structure has important influence and effect on the performance of the organic silicon coating, such as super-hydrophobicity, permeability increase, antireflection and the like.
At present, the main methods for constructing the micro-nano porous structure on the surface of the material comprise a template transfer method, etching, foaming and the like. But the transfer template can not realize the direct preparation of the microstructure on the surface of the substrate; the etching method and the vapor deposition have higher requirements on equipment and process and cannot meet the preparation requirement of products with complex structures; foaming preparation tends to result in closed cells in the surface layer, affecting the microstructural properties of the surface layer. Meanwhile, the material prepared by the process has poor binding force and mechanical property of the coating due to the fragile and weak surface coarse structure, so that the application of the material is greatly limited.
Disclosure of Invention
In order to overcome the defects in the prior art, the inventor of the invention carries out intensive research, and provides an organic silicon coating with a micro-nano porous structure on the surface and a preparation method thereof.
The technical scheme provided by the invention is as follows:
in a first aspect, an organic silicon coating with a micro-nano porous structure on the surface comprises the following components in parts by mass:
wherein n is 0-3;
the mixed solvent includes water, a hydrophilic organic solvent, and a hydrophobic organic solvent.
In a second aspect, a preparation method of an organic silicon coating with a micro-nano porous structure on the surface comprises the following steps:
uniformly dispersing organic silicon resin and nano filler in a mixed solvent;
adding a curing agent and a catalyst into a coating system according to the use ratio of the organic silicon resin;
air spraying is carried out on the surface of the base material under the conditions that the temperature is not less than 25 ℃ and the relative humidity is not less than 75%, and the surface of the base material is controlled to just form a continuous wet film during spraying;
and continuously standing the wet film formed by spraying for a certain time, and drying to obtain the organic silicon coating with the micro-nano porous structure on the surface.
According to the organic silicon coating with the micro-nano porous structure on the surface and the preparation method thereof, the organic silicon coating has the following beneficial effects:
(1) according to the organic silicon coating with the micro-nano porous structure on the surface and the preparation method thereof, the preparation of the organic silicon coating with the micro-nano porous structure on the surface is directly realized by selecting specific materials and proportion and adopting an air spraying method, the aperture size is 0.2-2 mu m, the thickness is 0.5-5 mu m, and the micro-nano porous structure on the surface plays an important role in improving the anti-reflection and hydrophobic properties of the coating.
(2) According to the organic silicon coating with the micro-nano porous structure on the surface and the preparation method thereof, a proper amount of nano filler is added into a coating system, so that the micro-nano structure on the surface of the coating is further improved; the hydrophobic property of the nano silicon oxide can be improved by adding the nano silicon oxide, so that the contact angle is more than or equal to 150 degrees; the addition of the nano carbon black can improve the anti-reflection performance, so that the glossiness of the coating is not more than 0.5 under the conditions of an incident angle of 20 degrees and an incident angle of 60 degrees.
Drawings
FIG. 1 is a micro-nano structure of the surface of a coating layer in example 1;
FIG. 2 shows the micro-nano structure of the coating surface in example 3.
Detailed Description
The features and advantages of the present invention will become more apparent and appreciated from the following detailed description of the invention.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
According to a first aspect of the invention, an organic silicon coating with a micro-nano porous structure on the surface is provided, and comprises the following components in parts by mass:
wherein n is 0 to 3, preferably 1 to 3;
the mixed solvent comprises water, a hydrophilic organic solvent and a hydrophobic organic solvent.
In a preferred embodiment, the silicone resin includes, but is not limited to, bis-hydroxymethyl silicone resin, having a molecular weight of 2000 to 25000.
In a preferred embodiment, the catalyst is dibutyltin dilaurate.
In a preferred embodiment, the nano filler is selected from one or a combination of silicon oxide and carbon black, the size is not more than 20nm, and if the size of the filler is too large, the preparation of the surface micro-nano structure is influenced.
In a preferred embodiment, the curing agent is tetraethyl orthosilicate.
In a preferred embodiment, the mixed solvent comprises xylene, butyl acetate, ethanol, nitromethane, dichloromethane and deionized water, and the mass ratio is as follows:
through a large number of experiments, the inventor discovers that the micro-nano porous structure on the surface of the coating can be effectively controlled by adjusting the proportion of the solvent, the control on the aperture and the porosity of the coating can be realized through proportioning and process control, and the micro-nano porous structure has an important effect on realizing the super-hydrophobic, anti-reflection and anti-reflection performances of the surface of the coating.
In a preferred embodiment, the thickness of the organic silicon coating is 0.5-5 μm, and the surface of the coating has a micro-nano porous structure of 0.2-2 μm.
According to a second aspect of the invention, an organosilicon coating with a micro-nano porous structure on the surface is provided, which comprises the following steps:
s1, uniformly dispersing the organic silicon resin and the nano filler in the mixed solvent;
s2, adding a curing agent and a catalyst into the coating system according to the use ratio of the organic silicon resin;
s3, performing air spraying on the surface of the base material under the conditions that the temperature is not less than 25 ℃ and the relative humidity is not less than 75%, and controlling the surface of the base material to just form a continuous wet film during spraying;
s4, continuously standing for 20-40 min under the conditions that the temperature is not less than 25 ℃ and the relative humidity is not less than 75%; baking for 6-8 h at the temperature of 80-120 ℃.
In a preferred embodiment, the air spraying is performed by controlling the spraying pressure to be 0.3 to 0.4MPa and the spraying distance to be about 30 to 40 cm.
Examples
Example 1
(1) The method comprises the following steps of adding a mixed solvent into bis-hydroxymethyl organic silicon resin with the molecular weight of 2000-5000, and uniformly stirring, wherein the components are in the following proportion:
(2) 2g of dibutyltin dilaurate and 5g of ethyl orthosilicate are added into the system and stirred uniformly;
(3) air spraying the system at 25.6 ℃ and relative humidity of 77%, wherein the spraying air pressure is 0.3MPa, the spraying distance is about 30cm, the substrate is a silicon wafer, and the surface of the substrate is controlled to just form a continuous wet film;
(4) placing the paint film for 20min under the environmental condition;
(5) then the system is baked for 8 hours at 80 ℃ for curing.
Through testing, the pore diameter of the porous structure of the formed organic silicon coating is about 0.2-2 μm, the thickness is about 2-4 μm (figure 1), and the contact angle of the coating is 150 degrees; the coating does not foam, crack or fall off after 100 times of thermal cycle test at-196-100 ℃.
Example 2
(1) The preparation method comprises the following steps of adding a mixed solvent into bis-hydroxymethyl organic silicon resin with the molecular weight of 20000-25000, and uniformly stirring, wherein the components are in the following proportion:
(2) adding 1g of dibutyltin dilaurate and 3g of ethyl orthosilicate into the system, and uniformly stirring;
(3) air spraying the system at 28.1 ℃ and relative humidity of 78%, wherein the spraying air pressure is 0.35MPa, the spraying distance is about 30cm, the base material is made of aluminum alloy, and the surface of the base material is controlled to just form a continuous wet film;
(4) placing the paint film for 40min under the environmental condition;
(5) the system is then cured by baking at 120 ℃ for 6 hours.
Tests show that the pore diameter of the porous structure of the formed organic silicon coating is about 0.5-2 mu m, the thickness is about 1-2 mu m, and the contact angle of the coating is 152 degrees; the coating does not foam, crack or fall off after 100 times of thermal cycle test at-196-100 ℃.
Example 3
(1) Adopting bis-hydroxymethyl organic silicon resin with molecular weight of 5000-8000, adding a mixed solvent and nano carbon black, and uniformly stirring, wherein the proportion of each component is as follows:
(2) 2g of dibutyltin dilaurate and 7g of ethyl orthosilicate are added into the system and stirred uniformly;
(3) air spraying the system at 27.7 ℃ and relative humidity of 80%, wherein the spraying air pressure is 0.4MPa, the spraying distance is about 40cm, the substrate is a silicon wafer, and the surface of the substrate is controlled to just form a continuous wet film;
(4) placing the paint film for 30min under the environmental condition;
(5) the system was then cured by baking at 85 ℃ for 8 hours.
Through testing, the pore diameter of the porous structure of the formed organic silicon coating is about 0.5-2 μm, the thickness is about 2-3 μm (figure 2), the glossiness is 0 under the condition of an incident angle of 20 degrees, and the glossiness is 0.5 under the condition of an incident angle of 60 degrees; the coating does not foam, crack or fall off after 100 times of thermal cycle test at-196-100 ℃.
Example 4
(1) The preparation method comprises the following steps of adding a mixed solvent and nano silicon oxide into bis-hydroxymethyl organic silicon resin with the molecular weight of 20000-25000, and uniformly stirring, wherein the components are in the following proportion:
(2) 2g of dibutyltin dilaurate and 7g of ethyl orthosilicate are added into the system and stirred uniformly;
(3) air spraying the system at 25.9 ℃ and relative humidity of 79%, wherein the spraying air pressure is 0.4MPa, the spraying distance is about 40cm, the base material is made of aluminum alloy, and the surface of the base material is controlled to just form a continuous wet film;
(4) placing the paint film for 30min under the environmental condition;
(5) then the system is baked for 7 hours at 100 ℃ for curing.
Tests show that the pore diameter of the porous structure of the formed organic silicon coating is about 0.5-2 mu m, the thickness of the porous structure is about 1-2 mu m, and the contact angle of the coating is 160 degrees; the coating does not foam, crack or fall off after 100 times of thermal cycle test at-196-100 ℃.
The invention has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to be construed in a limiting sense. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and its embodiments without departing from the spirit and scope of the present invention, which fall within the scope of the present invention. The scope of the invention is defined by the appended claims.
Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.
Claims (10)
1. The organic silicon coating with the micro-nano porous structure on the surface is characterized by comprising the following components in parts by mass:
wherein n is 0-3;
the mixed solvent includes water, a hydrophilic organic solvent, and a hydrophobic organic solvent.
2. The silicone coating with the micro-nano porous structure on the surface according to claim 1, wherein the silicone resin is bis-hydroxymethyl silicone resin with molecular weight of 2000-25000.
3. The organosilicon coating with the micro-nano porous structure on the surface is prepared according to the claim 1, wherein the catalyst is dibutyltin dilaurate.
4. The organosilicon coating with the micro-nano porous structure on the surface according to claim 1, wherein the nano filler is selected from one or a combination of silicon oxide and carbon black, and the size is not more than 20 nm.
5. The organosilicon coating with the surface having a micro-nano porous structure according to claim 1, wherein the curing agent is tetraethoxysilane.
6. The organic silicon coating with the micro-nano porous structure on the surface according to claim 1 is characterized in that the mixed solvent comprises xylene, butyl acetate, ethanol, nitromethane, dichloromethane and deionized water according to the following mass ratio:
7. the organosilicon coating with the surface having a micro-nano porous structure according to claim 1 is characterized in that the thickness of the organosilicon coating is 0.5-5 μm, and the surface of the coating has a micro-nano porous structure of 0.2-2 μm.
8. A preparation method of an organic silicon coating with a micro-nano porous structure on the surface is characterized by comprising the following steps:
s1, uniformly dispersing the organic silicon resin and the nano filler in the mixed solvent;
s2, adding a curing agent and a catalyst into the coating system according to the use ratio of the organic silicon resin;
s3, performing air spraying on the surface of the base material, and controlling the surface of the base material to just form a continuous wet film during spraying;
and S4, continuously standing the wet film formed by spraying for a certain time, and drying to obtain the organic silicon coating with the surface having the micro-nano porous structure.
9. The preparation method of the organosilicon coating with the surface having the micro-nano porous structure according to claim 8, wherein in step S3, air spraying is performed on the surface of the substrate under the conditions that the temperature is not less than 25 ℃ and the relative humidity is not less than 75%.
10. The preparation method of the organosilicon coating with the surface having the micro-nano porous structure according to claim 8, wherein in step S4, the wet film formed by spraying is kept standing for 20-40 min under the conditions that the temperature is not less than 25 ℃ and the relative humidity is not less than 75%, and is baked for 6-8 h under the conditions of 80-120 ℃ to obtain the organosilicon coating with the surface having the micro-nano porous structure.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114854307A (en) * | 2022-05-10 | 2022-08-05 | 哈尔滨工业大学 | Self-cleaning broadband high-light-absorption coating and preparation method and application thereof |
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- 2021-11-22 CN CN202111389338.7A patent/CN114196319A/en active Pending
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|---|---|---|---|---|
| CN114854307A (en) * | 2022-05-10 | 2022-08-05 | 哈尔滨工业大学 | Self-cleaning broadband high-light-absorption coating and preparation method and application thereof |
| CN114854307B (en) * | 2022-05-10 | 2022-11-04 | 哈尔滨工业大学 | Self-cleaning broadband high-light-absorption coating and preparation method and application thereof |
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