CN109321131B - Durable wear-resistant high-self-cleaning super-hydrophobic coating and preparation method thereof - Google Patents
Durable wear-resistant high-self-cleaning super-hydrophobic coating and preparation method thereof Download PDFInfo
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- CN109321131B CN109321131B CN201811531750.6A CN201811531750A CN109321131B CN 109321131 B CN109321131 B CN 109321131B CN 201811531750 A CN201811531750 A CN 201811531750A CN 109321131 B CN109321131 B CN 109321131B
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- 238000000576 coating method Methods 0.000 title claims abstract description 129
- 239000011248 coating agent Substances 0.000 title claims abstract description 127
- 230000003075 superhydrophobic effect Effects 0.000 title claims abstract description 70
- 238000004140 cleaning Methods 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title abstract description 19
- 239000000945 filler Substances 0.000 claims abstract description 38
- 239000002245 particle Substances 0.000 claims abstract description 32
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 13
- 239000012948 isocyanate Substances 0.000 claims abstract description 13
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 13
- 229960000892 attapulgite Drugs 0.000 claims description 51
- 229910052625 palygorskite Inorganic materials 0.000 claims description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 229940089951 perfluorooctyl triethoxysilane Drugs 0.000 claims description 23
- AVYKQOAMZCAHRG-UHFFFAOYSA-N triethoxy(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl)silane Chemical group CCO[Si](OCC)(OCC)CCC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F AVYKQOAMZCAHRG-UHFFFAOYSA-N 0.000 claims description 23
- 239000000203 mixture Substances 0.000 claims description 22
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 19
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 229920005989 resin Polymers 0.000 claims description 17
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- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000013078 crystal Substances 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 239000000413 hydrolysate Substances 0.000 claims description 8
- 238000010992 reflux Methods 0.000 claims description 8
- 239000011259 mixed solution Substances 0.000 claims description 7
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- 238000010907 mechanical stirring Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 10
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- 244000020998 Acacia farnesiana Species 0.000 abstract description 4
- 235000010643 Leucaena leucocephala Nutrition 0.000 abstract description 4
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 4
- 238000007146 photocatalysis Methods 0.000 abstract description 2
- ZHPNWZCWUUJAJC-UHFFFAOYSA-N fluorosilicon Chemical group [Si]F ZHPNWZCWUUJAJC-UHFFFAOYSA-N 0.000 description 37
- 239000000243 solution Substances 0.000 description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 20
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 18
- 238000005096 rolling process Methods 0.000 description 16
- 238000005299 abrasion Methods 0.000 description 13
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 12
- 229960000907 methylthioninium chloride Drugs 0.000 description 12
- 239000006185 dispersion Substances 0.000 description 10
- 239000011521 glass Substances 0.000 description 10
- 235000012239 silicon dioxide Nutrition 0.000 description 9
- 239000011247 coating layer Substances 0.000 description 8
- 230000001699 photocatalysis Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 230000005855 radiation Effects 0.000 description 6
- 239000000377 silicon dioxide Substances 0.000 description 6
- 239000005543 nano-size silicon particle Substances 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- QTRSWYWKHYAKEO-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-henicosafluorodecyl-tris(1,1,2,2,2-pentafluoroethoxy)silane Chemical compound FC(F)(F)C(F)(F)O[Si](OC(F)(F)C(F)(F)F)(OC(F)(F)C(F)(F)F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F QTRSWYWKHYAKEO-UHFFFAOYSA-N 0.000 description 3
- 238000003760 magnetic stirring Methods 0.000 description 3
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- 239000011941 photocatalyst Substances 0.000 description 3
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- 239000011800 void material Substances 0.000 description 3
- YXRKNIZYMIXSAD-UHFFFAOYSA-N 1,6-diisocyanatohexane Chemical group O=C=NCCCCCCN=C=O.O=C=NCCCCCCN=C=O.O=C=NCCCCCCN=C=O YXRKNIZYMIXSAD-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
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- 230000007547 defect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 238000011031 large-scale manufacturing process Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000001338 self-assembly Methods 0.000 description 2
- 238000003980 solgel method Methods 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
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- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
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- 235000019441 ethanol Nutrition 0.000 description 1
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- -1 perfluorodecyl Chemical group 0.000 description 1
- 125000005007 perfluorooctyl group Chemical group FC(C(C(C(C(C(C(C(F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)* 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
-
- C—CHEMISTRY; METALLURGY
- 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
-
- 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
- C09D7/66—Additives characterised by particle size
- C09D7/67—Particle size smaller than 100 nm
-
- 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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- 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
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
Abstract
The invention discloses a durable wear-resistant high self-cleaning super-hydrophobic coating and a preparation method thereof. The coating is formed by curing fluororesin, low surface energy filler, nano titanium dioxide and isocyanate curing agent at room temperature, wherein the low surface energy filler and the nano titanium dioxide are respectively a combination of a nano rod and nano particles, or the low surface energy filler or the nano titanium dioxide are nano particles with different particle diameters, and the particle diameter ratio of the low surface energy filler to the nano titanium dioxide is more than 10. The invention can keep the stable super-hydrophobic structure of the Cassie model under the condition of high dripping, can degrade organic pollutants adhered to the surface by depending on the self-photocatalysis effect, and can permanently keep the super-hydrophobic and high self-cleaning capability of the coating surface. And because the contact area between the nano rod (wire) or the large-particle-size filler and the fluororesin matrix is larger, larger resistance needs to be overcome when the nano rod (wire) or the large-particle-size filler is worn and falls off, the wear resistance of the coating is better, and the durability of the super-hydrophobic effect can be ensured.
Description
Technical Field
The invention belongs to the technical field of organic-inorganic composite coatings, and particularly relates to a durable wear-resistant high-self-cleaning super-hydrophobic coating and a preparation method thereof.
Background
Self-cleaning is generally a measure of the ability of dust or contaminants on the surface of a coating to fall off or degrade under the external effects of gravity, wind, rain wash, light, etc., to keep the surface clean. The self-cleaning mechanism can be divided into super-hydrophobic self-cleaning and super-hydrophilic self-cleaning according to the difference of surface wettability. The super-hydrophobic coating has a surface with a special wetting state, the water contact angle of which is more than 150 degrees and the rolling angle of which is less than 10 degrees, the actual contact area of a water drop dropped on the super-hydrophobic coating and the surface of the coating is very small, and the super-hydrophobic coating is supported by a large amount of air trapped inside the coating, so that the super-hydrophobic coating is easy to roll away on the surface in a bead shape. The water drop falling process can carry dust or pollutants which are easy to be wetted by water to be separated from the surface of the coating, thereby achieving the self-cleaning effect. And the water contact angle of the surface of the super-hydrophilic coating is less than 5 degrees, oil stains are not easy to attach to the super-hydrophilic coating, and pollutants can be washed by a water film formed on the surface to realize self-cleaning. The super-hydrophilic coating comprises a special photo-induced super-hydrophilic coating, and usually contains nano-particles with photocatalytic activity, such as nano TiO2The photocatalyst is a typical photocatalyst, can effectively degrade organic pollutants on the surface of a coating under the action of illumination, and can wash away degraded substances on the surface of the coating by a flowing water film under the characteristic of photo-induced super-hydrophilicity.
The preparation method of the super-hydrophobic coating comprises a template method, a sol-gel method, a chemical vapor deposition method, a self-assembly method, a phase separation method, an etching method and the like, and has the common defects that the preparation process is complex, the cost is high, the large-scale production is not facilitated, the weather resistance of the prepared coating is usually poor, and in addition, a micro rough structure required by the super-hydrophobic coating is easily damaged by external force, and liquid drops are prevented from rolling, so that the self-cleaning advantage brought by the super-hydrophobic effect is lost. The one-step blending method of the low-surface-energy film-forming substance with excellent weather resistance as the matrix and the nano-particle structure micro-nano coarse structure is beneficial to realizing the scale manufacturing of the super-hydrophobic coating. However, good superhydrophobic effect is usually at the expense of reduced mechanical properties of the coating itself, especially abrasion resistance, and thus superhydrophobic coatings suffer from short service times. The sol-gel method, the self-assembly method, the hydrothermal method and other processes in the preparation method of the super-hydrophilic coating are complicated, the cost is high, the binding force of the prepared coating is weak, and the application of the super-hydrophilic self-cleaning coating is limited. When the nano titanium dioxide particles contained in the photoinduced super-hydrophilic coating exert the photocatalytic degradation effect, the film-forming material is also easily degraded, and the mechanical property of the coating is weakened. The characteristics of super-hydrophobicity and photocatalysis are combined, so that the coating can exert a photocatalytic degradation effect on organic pollutants at the local contact part with water drops while the whole super-hydrophobic effect is maintained, a high self-cleaning effect is realized, the super-hydrophobic effect is durable, and the application value is great.
Patent CN101962514B reports a super-hydrophobic self-cleaning coating with long durability, and patent CN103409028B also discloses a photocatalytic self-repairing super-hydrophobic coating, wherein the research idea is to combine super-hydrophobicity with a photocatalytic effect, the preparation process is simple and feasible, but the wear resistance and durability of the super-hydrophobic effect cannot be ensured only by combining nano-photocatalytic particles or simple matching of the nano-particles. And the self-repairing effect is that the reconstruction of a rough structure is realized by depending on the degradation of the film-forming matrix by the photocatalytic particles, and the mechanical property of the coating cannot be ensured.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a durable wear-resistant high self-cleaning super-hydrophobic coating and a preparation method thereof. The high self-cleaning super-hydrophobic coating is formed by curing fluororesin, low surface energy filler, nano titanium dioxide and isocyanate curing agent at room temperature, the prepared high self-cleaning super-hydrophobic coating can keep a stable super-hydrophobic structure of a Cassie model under the condition of high dripping, organic pollutants adhered to the surface can be degraded by virtue of the self-photocatalytic effect, and the super-hydrophobic and high self-cleaning capability of the coating surface can be kept for a long time.
In order to achieve the technical purpose, the invention is realized by the following technical scheme: a durable wear-resistant high self-cleaning super-hydrophobic coating comprises fluororesin, low-surface-energy filler, nano titanium dioxide and an isocyanate curing agent, wherein the fluororesin is crosslinked with the isocyanate curing agent to realize curing, the low-surface-energy filler and the nano titanium dioxide are respectively a combination of a nanorod and nano particles, or the low-surface-energy filler or the nano titanium dioxide are nano particles with different particle sizes, and the particle size ratio of the low-surface-energy filler to the nano titanium oxide is more than 10. The nano-rod-shaped low-surface-energy filler and the nano titanium oxide particles are adopted to prepare the composite coating, a micro-nano rough structure required by a super-hydrophobic surface can be stably constructed, floating ash is not easily attached to the surface of the coating, and pollutants can be brought out of the surface in the process of rolling off water drops; in addition, the titanium dioxide particles distributed among the nano rod-shaped fillers can degrade organic matters on the surface through a photocatalytic effect. Through the combination of the super-hydrophobic and photocatalytic effects, the high self-cleaning property of the surface of the coating can be maintained. The Cassie model with the microstructure on the surface of the coating layer more easily kept stable is prepared by adopting the combined filler of the nano rods and the nano particles or the combined filler with a large particle diameter ratio, and water drops can still roll off on the surface of the coating layer under the impact. And because the contact area between the nano rod (wire) or the large-particle-size filler and the fluororesin matrix is larger, larger resistance needs to be overcome when the nano rod (wire) or the large-particle-size filler is worn and falls off, the wear resistance of the coating is better, and the durability of the super-hydrophobic effect can be ensured.
The fluororesin is one or a mixture of more of room-temperature cured trifluoro-FEVE resin, tetrafluoro-FEVE resin, fluorine modified silicone resin, fluorine modified acrylic resin and the like. Adopts fluororesin as film-forming resin, has low surface energy and excellent weather resistance, and can resist nano TiO2The photocatalytic degradation function of the coating can prevent the coating from being pulverized, and the mechanical property is durable.
The low surface energy filler is a fluorosilane modified nano filler, and the nano filler is attapulgite powder, carbon fiber, carbon nano tube and SiO with the particle size of 500-1000nm2、Al2O3、CaCO3And the like, or a mixture of several of them. The fluorosilane is one or a mixture of two of perfluorooctyl triethoxysilane and perfluorodecyl triethoxysilane.
The nano titanium dioxide is nano titanium dioxide or a titanium dioxide nanowire which takes anatase as a main crystal form and has the particle size of 5-100 nm.
The preparation steps of the fluorosilane modified nano filler are as follows: adding the nano filler into ethanol, dispersing in a shearing-ultrasonic-shearing circulating mode, realizing high dispersion of the nano filler through shearing dispersion and high-power ultrasonic energy output, and then adding hydrolysate of fluorosilane, wherein the mass ratio of the fluorosilane to the nano filler is 0.2-0.5: 1. then reflux reaction is carried out for more than 22 hours at the temperature of 100-120 ℃, and centrifugal drying is carried out to obtain the fluorosilane modified nano-filler. The hydrolysis liquid of the fluorosilane is a mixed liquid of fluorosilane, deionized water and absolute ethyl alcohol according to a mass ratio of 1: 5-1: 1.5: 15 (preferably 1: 5-1: 10) and a pH value of 3-5.
The invention relates to a durable wear-resistant high self-cleaning super-hydrophobic coating which is formed by curing a coating with certain components at room temperature, wherein the coating comprises the following components in percentage by mass: 20-40% of fluororesin, 3-40% of low surface energy nano attapulgite, 4-30% of nano titanium dioxide particles, 20-60% of organic solvent and 2.5-7.5% of isocyanate curing agent.
The fluororesin is fluorine-silicon modified resin (abbreviated as fluorine-silicon resin); the low surface energy attapulgite is perfluorodecyl (or octyl) triethoxysilane modified attapulgite, the diameter is 3-10nm, and the length is 0.1-1 μm; the organic solvent is a mixed solvent of butyl acetate and xylene, and the mass ratio is (1-3): 1; the isocyanate curing agent is HDI trimer, preferably German Bayer N3390.
The invention relates to a durable wear-resistant high self-cleaning super-hydrophobic coating which is formed by curing a coating with a certain component at room temperature, wherein the coating comprises the following components in percentage by mass: 20-60% of fluororesin, 5-20% of low surface energy attapulgite, 3-15% of modified nano silicon dioxide, 1-20% of nano titanium dioxide particles, 20-60% of organic solvent and 2-7% of isocyanate curing agent.
The fluororesin is modified fluorosilicone resin; the low surface energy attapulgite is perfluorooctyl (or decyl) triethoxysilane modified attapulgite, the diameter is 3-10nm, and the length is 0.1-1 μm; the organic solvent is a mixed solvent of butyl acetate and xylene, and the mass ratio is (1-3): 1; the isocyanate curing agent is HDI trimer, preferably German Bayer N3390.
The invention relates to a durable wear-resistant high self-cleaning super-hydrophobic coating which is prepared by the following steps: mixing and grinding a low-surface-energy filler and nano titanium dioxide according to a certain proportion, adding the mixture into an organic solvent, dispersing for 30min-1h by adopting high-power ultrasonic dispersion, adding fluororesin into a uniformly dispersed filler suspension, firstly mechanically stirring and mixing for 1h-2h, and then grinding for 30min-1h by using a blue grinding machine to obtain a coating component A. Before coating construction, the component A and an isocyanate curing agent are uniformly mixed according to a proportion, and the mixture is coated on the surface of a substrate and dried at room temperature to obtain the high self-cleaning super-hydrophobic coating.
The high-power ultrasonic dispersion power is 50W-100W. When the power is too low, some particle aggregates cannot be opened, so that the mixing and dispersing effects of the filler are influenced; the power is too high, the temperature of the dispersion liquid is too fast, more bubbles which are difficult to eliminate are generated, the subsequent coating preparation is influenced, and the energy waste is caused.
The mechanical stirring speed is 500rpm-1500 rpm. When the stirring speed is too low, the mixing effect of the filler and the resin is weakened; the stirring speed is too high, and a large amount of air can be involved in the generated vortex, so that the defoaming of the coating is not facilitated.
The durable wear-resistant high self-cleaning super-hydrophobic coating and the preparation method thereof have the following advantages: (1) the preparation process is simple, and the large-scale production and application are easy to realize; (2) the surface energy is low, the weather resistance is good, and long-term service can be realized; (3) the super-hydrophobic effect is good, floating ash is not easily stained on the surface of the coating, and pollutants can be brought out of the surface in the process of rolling off water drops, so that the surface is self-cleaned; (4) the titanium dioxide particles can degrade organic matters on the surface through a photocatalytic effect, so that the organic matters are cleaned, and the titanium dioxide particles have double high-efficiency self-cleaning capabilities. (5) The combined filler of the nano rods and the nano particles or the combined filler with a large particle diameter ratio is adopted to prepare a Cassie model with the microstructure on the surface of the coating more easily kept stable, and water drops can still roll off on the surface of the coating without leaving traces under the impact of a certain speed; (6) because the contact area between the nano rod (wire) or the large-particle-size filler and the fluororesin matrix is large, and the abrasion and falling need to overcome large resistance, the coating has good abrasion resistance and can ensure the durability of the super-hydrophobic effect. (7) As a natural nano rod-shaped fiber material, the attapulgite powder has unique void structure and interface property and excellent adsorption performance. The void structure provides sufficient conditions for the construction of the super-hydrophobic structure, and the structural property of the void structure can promote the catalytic effect of the photocatalyst.
Detailed Description
The present invention will be further described with reference to the following examples.
Although the present invention has been described with reference to the specific embodiments, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts based on the technical solutions of the present invention.
Example 1
1) The preparation of the fluorosilane modified nano attapulgite is to mix 6 parts of deionized water and 60 parts of absolute ethyl alcohol and adjust the pH value of the mixed solution to 4 by acetic acid. 6 parts of perfluorooctyl triethoxysilane is added to the mixture, and the mixture is magnetically stirred for 30 minutes to promote the fluorosilane to be fully hydrolyzed.
Adding 20 parts of attapulgite into 400 parts of absolute ethyl alcohol, shearing and dispersing for 20min at 6000rpm by a high-shear dispersion emulsifier, then dispersing for 30min by adopting high-power ultrasound 80W, and shearing and dispersing for 20min at 6000rpm again.
Adding fluorosilane hydrolysate into the dispersion liquid of the attapulgite, carrying out reflux reaction for 24h at 100 ℃, and carrying out centrifugal drying to obtain the fluorosilane modified nano attapulgite with the diameter of 3-10nm and the length of 0.1-1 mu m.
2) Preparing durable wear-resistant high self-cleaning super-hydrophobic coating
The durable wear-resistant high self-cleaning super-hydrophobic coating is formed by curing a coating with certain components at room temperature, wherein the coating comprises the following components in percentage by mass: 25% of fluorosilicone resin; 15% of perfluorooctyl triethoxysilane modified nano attapulgite; 5 percent of nano titanium dioxide particles (anatase type is the main crystal form, the particle size is 20 nm); 39% of butyl acetate; 13% of dimethylbenzene; bayer B33903%. The durable wear-resistant high self-cleaning super-hydrophobic coating in the embodiment is prepared by the following steps: mixing and grinding the perfluorooctyl triethoxysilane modified nano attapulgite and the nano titanium dioxide according to a ratio, adding the mixture into an organic solvent, dispersing for 30min by adopting high-power ultrasonic dispersion of 80W, adding fluorosilicone resin into the uniformly dispersed filler suspension, firstly mechanically stirring at 800rpm for mixing for 2h, and then grinding for 30min by using a blue grinding machine to obtain the coating component A. Before coating construction, the component A and Bayer N3390 are uniformly mixed according to a proportion, and the mixture is coated on the surface of a substrate and dried at room temperature to obtain the high self-cleaning super-hydrophobic coating.
The high self-cleaning super-hydrophobic coating prepared by the formula has a contact angle of 155.7 degrees and a rolling angle of 2 degrees. The bonding force with a glass substrate can reach 1 grade, and after the glass substrate is worn on 400# sandpaper for 40 cycles (under the weight of 100g of weights, the abrasion of 10cm in vertical and horizontal intersection is respectively carried out for 1 cycle), the contact angle is 155.2 degrees, and the rolling angle is 4 degrees. Water droplets having a diameter of 5mm, which have dropped at a height of 80cm to 120cm from the coating, can still roll off easily on the surface of the coating. The coating was soaked in 10mg/L methylene blue solution at 1W/m2The color of the methylene blue solution can be obviously lightened after the ultraviolet light is radiated for 168 hours, and the solution after the light radiation is calibrated by an ultraviolet spectrophotometer, wherein the concentration of the solution is 0.7 mg/L.
Example 2
1) Preparing the fluorosilane modified nano attapulgite
6 parts of deionized water and 30 parts of absolute ethyl alcohol are mixed, and the pH value of the mixed solution is adjusted to 4 by using acetic acid. 6 parts of perfluorooctyl triethoxysilane is added to the mixture, and the mixture is magnetically stirred for 30 minutes to promote the fluorosilane to be fully hydrolyzed.
Adding 20 parts of attapulgite into 400 parts of absolute ethyl alcohol, shearing and dispersing at 6000rpm for 20min, then adopting high-power ultrasonic dispersion for 30min, and shearing and dispersing at 6000rpm for 20min again.
Adding fluorosilane hydrolysate into the dispersion liquid of the attapulgite, performing reflux reaction at 120 ℃ for 22h, and performing centrifugal drying to obtain fluorosilane modified nano attapulgite with the diameter of 3-10nm and the length of 0.1-1 mu m.
2) Preparing durable wear-resistant high self-cleaning super-hydrophobic coating
The durable wear-resistant high self-cleaning super-hydrophobic coating is formed by curing a coating with certain components at room temperature, wherein the coating comprises the following components in percentage by mass: 23% of fluorosilicone resin; 23% of perfluorooctyl triethoxysilane modified nano attapulgite; 4.5 percent of nano titanium dioxide particles (anatase type is the main crystal form, the particle diameter is 20 nm); 32% of butyl acetate; 14% of dimethylbenzene; bayer B33903.5%. The preparation method of the durable wear-resistant high self-cleaning super-hydrophobic coating in the embodiment is the same as that of the embodiment 1.
The contact angle and the rolling angle of the high self-cleaning super-hydrophobic coating prepared by the formula are 156 degrees and 2.5 degrees respectively. The bonding force with a glass substrate can reach 1 grade, and after the glass substrate is worn on 400# sandpaper for 40 cycles (under the weight of 100g of weights, the abrasion of 10cm in vertical and horizontal intersection is respectively carried out for 1 cycle), the contact angle is 155.9 degrees, and the rolling angle is 3 degrees. A water droplet having a diameter of 5mm dropped at a height of 100cm from the coating layer and could still easily roll off the surface of the coating layer. The coating was soaked in 10mg/L methylene blue solution at 1W/m2The color of the methylene blue solution can be obviously lightened after the ultraviolet light is radiated for 168 hours, and the solution after the light radiation is calibrated by using an ultraviolet spectrophotometer, wherein the concentration of the solution is 1 mg/L.
Example 3
1) Preparing the fluorosilane modified nano attapulgite
10 parts of deionized water and 100 parts of absolute ethyl alcohol are mixed, and the pH value of the mixed solution is adjusted to 4 by using acetic acid. 10 parts of perfluorooctyl triethoxysilane was added thereto, and magnetic stirring was carried out for 30 minutes to promote sufficient hydrolysis of fluorosilane.
Adding 20 parts of attapulgite into 400 parts of absolute ethyl alcohol, shearing and dispersing at 6000rpm for 20min, then adopting high-power ultrasonic dispersion for 30min, and shearing and dispersing at 6000rpm for 20min again.
Adding fluorosilane hydrolysate into the dispersion of attapulgite, performing reflux reaction at 100 ℃ for 30h, and performing centrifugal drying to obtain fluorosilane modified nano attapulgite with the diameter of 3-10nm and the length of 0.1-1 μm.
2) Preparing durable wear-resistant high self-cleaning super-hydrophobic coating
The durable wear-resistant high self-cleaning super-hydrophobic coating is formed by curing a coating with certain components at room temperature, wherein the coating comprises the following components in percentage by mass: 33% of fluorine-silicon resin; 4% of perfluorooctyl triethoxysilane modified nano attapulgite; 26 percent of nano titanium dioxide particles (anatase type is the main crystal form, the particle size is 20 nm); 22% of butyl acetate; 11% of dimethylbenzene; bayer B33904%. The preparation method of the durable wear-resistant high self-cleaning super-hydrophobic coating in the embodiment is the same as that of the embodiment 1.
The contact angle and the rolling angle of the high self-cleaning super-hydrophobic coating prepared by the formula are 155 degrees and 3.5 degrees respectively. The bonding force with a glass substrate can reach 1 grade, and after the glass substrate is worn on 400# sandpaper for 40 cycles (under the weight of 100g of weights, the abrasion of 10cm is respectively carried out for 1 cycle in a transverse and vertical crossing mode), the contact angle is 154 degrees, and the rolling angle is 4.5 degrees. A water droplet having a diameter of 5mm, which was dropped at a height of 90cm from the coating, could still easily roll off the surface of the coating. The coating was soaked in 10mg/L methylene blue solution at 1W/m2The color of the methylene blue solution can be obviously lightened after the ultraviolet light is radiated for 168 hours, and the solution after the light radiation is calibrated by using an ultraviolet spectrophotometer, wherein the concentration of the solution is 0.5 mg/L.
Example 4
1) Preparing the fluorosilane modified nano attapulgite
6 parts of deionized water and 60 parts of absolute ethyl alcohol are mixed, and the pH value of the mixed solution is adjusted to 4 by using acetic acid. 6 parts of perfluorooctyl triethoxysilane is added to the mixture, and the mixture is magnetically stirred for 30 minutes to promote the fluorosilane to be fully hydrolyzed.
Adding 20 parts of attapulgite into 400 parts of absolute ethyl alcohol, shearing and dispersing at 6000rpm for 20min, then adopting high-power ultrasonic dispersion for 30min, and shearing and dispersing at 6000rpm for 20min again.
Adding fluorosilane hydrolysate into the dispersion liquid of the attapulgite, performing reflux reaction for 22h at 110 ℃, and performing centrifugal drying to obtain fluorosilane modified nano attapulgite with the diameter of 3-10nm and the length of 0.1-1 mu m.
2) Preparing durable wear-resistant high self-cleaning super-hydrophobic coating
The durable wear-resistant high self-cleaning super-hydrophobic coating is formed by curing a coating with certain components at room temperature, wherein the coating comprises the following components in percentage by mass: 30% of fluorine-silicon resin; 30% of perfluorooctyl triethoxysilane modified nano attapulgite; 6 percent of nano titanium dioxide particles (anatase type is the main crystal form, the particle size is 20 nm); 20% of butyl acetate; 10% of dimethylbenzene; bayer B33904%. The preparation method of the durable wear-resistant high self-cleaning super-hydrophobic coating in the embodiment is the same as that of the embodiment 1.
The high self-cleaning super-hydrophobic coating prepared by the formula has a contact angle of 157.5 degrees and a rolling angle of 2.5 degrees. The bonding force with a glass substrate can reach 1 grade, and after the glass substrate is worn on 400# sandpaper for 40 cycles (under the weight of 100g of weights, the abrasion of 10cm is respectively carried out for 1 cycle in a transverse and vertical crossing mode), the contact angle is 157 degrees and the rolling angle is 2.5 degrees. A water droplet having a diameter of 5mm, which was dropped at a height of 90cm from the coating, could still easily roll off the surface of the coating. The coating was soaked in 10mg/L methylene blue solution at 1W/m2The color of the methylene blue solution can be obviously lightened after the ultraviolet light is radiated for 168 hours, and the solution after the light radiation is calibrated by using an ultraviolet spectrophotometer, wherein the concentration of the solution is 0.8 mg/L.
Example 5
1) Preparing the fluorosilane modified nano attapulgite
6 parts of deionized water and 60 parts of absolute ethyl alcohol are mixed, and the pH value of the mixed solution is adjusted to 4 by using acetic acid. 6 parts of perfluorooctyltriethoxysilane was added thereto, and magnetic stirring was carried out for 30 minutes to sufficiently hydrolyze the fluorosilane.
Adding 20 parts of attapulgite into 400 parts of absolute ethyl alcohol, shearing and dispersing at 6000rpm for 20min, then adopting high-power ultrasonic dispersion for 30min, and shearing and dispersing at 6000rpm for 20min again.
Adding fluorosilane hydrolysate into the dispersion liquid of the attapulgite, performing reflux reaction for 22h at 110 ℃, and performing centrifugal drying to obtain fluorosilane modified nano attapulgite with the diameter of 3-10nm and the length of 0.1-1 mu m.
2) Preparation of modified Nano-silica
The nanometer silicon dioxide with the granularity of 20nm is modified by adopting perfluorodecyl triethoxysilane, and other processes are the same as the attapulgite modification process, so that the modified nanometer silicon dioxide is obtained.
3) Preparing durable wear-resistant high self-cleaning super-hydrophobic coating
The durable wear-resistant high self-cleaning super-hydrophobic coating is formed by curing a coating with certain components at room temperature, wherein the coating comprises the following components in percentage by mass: 38% of fluorosilicone resin; 8 percent of perfluorooctyl triethoxysilane modified nano attapulgite; 8% of modified nano silicon dioxide; 4 percent of nano titanium dioxide particles (anatase type is the main crystal form, the particle size is 20 nm); 28% of butyl acetate; 10% of dimethylbenzene; bayer B33904%. The durable wear-resistant high self-cleaning super-hydrophobic coating in the embodiment is prepared by the following steps: mixing and grinding the modified nano attapulgite, the modified nano silicon dioxide and the nano titanium dioxide, adding the mixture into an organic solvent, dispersing for 30min by adopting high-power ultrasonic dispersion 100W, adding fluorosilicone resin into the uniformly dispersed filler suspension, firstly mechanically stirring for 1000rpm for mixing for 2h, and then grinding for 30min by using a blue grinding machine to obtain the coating component A. Before coating construction, the component A and Bayer N3390 are uniformly mixed according to a proportion, and the mixture is coated on the surface of a substrate and dried at room temperature to obtain the high self-cleaning super-hydrophobic coating.
The high self-cleaning super-hydrophobic coating prepared by the formula has a contact angle of 157.5 degrees and a rolling angle of 2 degrees. The bonding force with a glass substrate can reach 1 grade, and the contact angle and the rolling angle are 157.1 degrees and 2.5 degrees after the abrasion of 400# sandpaper for 40 cycles (the abrasion of 10cm is respectively carried out under the weight of 100g weight and the abrasion of 1 cycle is carried out in a transverse and vertical crossing mode). A water droplet having a diameter of 5mm dropped at a height of 120cm from the coating layer and could still easily roll off the surface of the coating layer. The coating was soaked in 10mg/L methylene blue solution at 1W/m2The color of the methylene blue solution can be obviously lightened after the ultraviolet light is radiated for 168 hours, and the solution after the light radiation is calibrated by using an ultraviolet spectrophotometer, wherein the concentration of the solution is 1.2 mg/L.
Example 6
1) Preparing the fluorosilane modified nano attapulgite
10 parts of deionized water and 100 parts of absolute ethyl alcohol are mixed, and the pH value of the mixed solution is adjusted to 4 by using acetic acid. 10 parts of perfluorooctyltriethoxysilane was added thereto, and magnetic stirring was carried out for 30 minutes to sufficiently hydrolyze the fluorosilane.
Adding 20 parts of attapulgite into 400 parts of absolute ethyl alcohol, shearing and dispersing at 6000rpm for 20min, then adopting high-power ultrasonic dispersion for 30min, and shearing and dispersing at 6000rpm for 20min again.
Adding fluorosilane hydrolysate into the dispersion liquid of the attapulgite, carrying out reflux reaction for 24h at 100 ℃, and carrying out centrifugal drying to obtain the fluorosilane modified nano attapulgite with the diameter of 3-10nm and the length of 0.1-1 mu m.
2) Preparation of modified Nano-silica
The nanometer silicon dioxide with the granularity of 20nm is modified by adopting perfluorodecyl triethoxysilane, and other processes are the same as the attapulgite modification process, so that the modified nanometer silicon dioxide is obtained.
3) Preparing durable wear-resistant high self-cleaning super-hydrophobic coating
The durable wear-resistant high self-cleaning super-hydrophobic coating is formed by curing a coating with certain components at room temperature, wherein the coating comprises the following components in percentage by mass: 27% of fluorine-silicon resin; 22 percent of perfluorooctyl triethoxysilane modified nano attapulgite; 4% of modified nano silicon dioxide; 3 percent of nano titanium dioxide particles (anatase type is the main crystal form, the particle size is 20 nm); 30% of butyl acetate; 10% of dimethylbenzene; bayer B33904%. The durable wear-resistant high self-cleaning super-hydrophobic coating in the embodiment is prepared by the following steps: mixing and grinding the modified nano attapulgite, the modified nano silicon dioxide and the nano titanium dioxide, adding the mixture into an organic solvent, dispersing for 30min by adopting high-power ultrasonic dispersion 100W, adding fluorosilicone resin into the uniformly dispersed filler suspension, firstly mechanically stirring for 1000rpm for mixing for 2h, and then grinding for 30min by using a blue grinding machine to obtain the coating component A. Before coating construction, the component A and Bayer N3390 are uniformly mixed according to a proportion, and the mixture is coated on the surface of a substrate and dried at room temperature to obtain the high self-cleaning super-hydrophobic coating.
The high self-cleaning super-hydrophobic coating prepared by the formula has a contact angle of 156.8 degrees and a rolling angle of 3 degrees. The bonding force with a glass substrate can reach 1 grade, and the contact angle and the rolling angle are respectively 156.5 degrees and 2.8 degrees after the abrasion of 400# sandpaper for 40 cycles (the abrasion of 10cm is respectively carried out under the weight of 100g weight and the abrasion is 1 cycle). A water droplet having a diameter of 5mm dropped at a height of 100cm from the coating layer and could still easily roll off the surface of the coating layer. The coating was soaked in 10mg/L methylene blue solution at 1W/m2The color of the methylene blue solution can be obviously lightened after the ultraviolet light is radiated for 168 hours, and the solution after the light radiation is calibrated by using an ultraviolet spectrophotometer, wherein the concentration of the solution is 1 mg/L.
Claims (2)
1. A durable wear-resistant high self-cleaning super-hydrophobic coating is formed by curing fluororesin, low-surface-energy filler, nano titanium dioxide and isocyanate curing agent at room temperature;
the nano titanium dioxide is nano titanium dioxide particles with the particle size of 5-100nm and the anatase type is the main crystal form;
the low surface energy filler is perfluoro octyl triethoxysilane modified attapulgite, and is prepared by the following method: the attapulgite is added into ethanol and dispersed in a shearing-ultrasonic-shearing circulating mode, and then hydrolysate of perfluorooctyl triethoxysilane is added, wherein the mass ratio of the perfluorooctyl triethoxysilane to the attapulgite is 0.2-0.5: 1; then reflux reaction is carried out for more than 22 hours at the temperature of 100-120 ℃, and the nano attapulgite modified by the perfluorooctyl triethoxysilane is obtained by centrifugal drying; the hydrolysis liquid of the perfluorooctyl triethoxysilane is obtained by adding the perfluorooctyl triethoxysilane into a mixed solution of deionized water and absolute ethanol with the pH value of 3-5 for hydrolysis;
wherein the content of the first and second substances,
the coating comprises the following components in percentage by mass: 20-40% of fluororesin, 3-40% of perfluorooctyl triethoxysilane modified nano attapulgite, 4-30% of nano titanium dioxide, 20-60% of organic solvent and 2.5-7.5% of isocyanate curing agent; the diameter of the perfluorooctyl triethoxysilane modified nano attapulgite is 3-10nm, and the length of the nano attapulgite is 0.1-1 mu m; the fluororesin is modified fluorosilicone resin; the organic solvent is a mixed solvent of butyl acetate and xylene, and the mass ratio is (1-3): 1; the isocyanate curing agent is HDI tripolymer;
the coating is prepared by the following method: mixing and grinding the perfluorooctyl triethoxysilane modified nano attapulgite and the nano titanium dioxide, adding the mixture into an organic solvent, dispersing the mixture for 30min to 1h by adopting high-power ultrasonic dispersion, adding fluororesin into the uniformly dispersed filler suspension, firstly mechanically stirring and mixing the mixture for 1h to 2h, and then grinding the mixture for 30min to 1h by using a blue grinding machine to obtain a coating component A; before coating construction, the component A and an isocyanate curing agent are uniformly mixed according to a proportion, and the mixture is coated on the surface of a substrate and dried at room temperature to obtain the high self-cleaning super-hydrophobic coating.
2. The durable wear-resistant high self-cleaning superhydrophobic coating of claim 1, wherein the high power ultrasonic dispersion power is 50W to 100W; the speed of the mechanical stirring is 500rpm to 1500 rp.
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| CN107760065A (en) * | 2017-09-22 | 2018-03-06 | 国网山东省电力公司电力科学研究院 | A kind of method of modifying of super-hydrophobic filler grain for antifouling flush paint and application |
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