CN111500095A - Preparation method and application of novel super-hydrophobic coating material - Google Patents
Preparation method and application of novel super-hydrophobic coating material Download PDFInfo
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- CN111500095A CN111500095A CN202010312957.5A CN202010312957A CN111500095A CN 111500095 A CN111500095 A CN 111500095A CN 202010312957 A CN202010312957 A CN 202010312957A CN 111500095 A CN111500095 A CN 111500095A
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- 230000003075 superhydrophobic effect Effects 0.000 title claims abstract description 63
- 238000000576 coating method Methods 0.000 title claims abstract description 43
- 239000000463 material Substances 0.000 title claims abstract description 37
- 239000011248 coating agent Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000002023 wood Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000004744 fabric Substances 0.000 claims abstract description 10
- 239000011521 glass Substances 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 31
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 20
- 239000006185 dispersion Substances 0.000 claims description 20
- 239000000377 silicon dioxide Substances 0.000 claims description 20
- 229910052681 coesite Inorganic materials 0.000 claims description 16
- 229910052906 cristobalite Inorganic materials 0.000 claims description 16
- 229910052682 stishovite Inorganic materials 0.000 claims description 16
- 229910052905 tridymite Inorganic materials 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 13
- 238000007711 solidification Methods 0.000 claims description 10
- 230000008023 solidification Effects 0.000 claims description 10
- FGBJXOREULPLGL-UHFFFAOYSA-N ethyl cyanoacrylate Chemical compound CCOC(=O)C(=C)C#N FGBJXOREULPLGL-UHFFFAOYSA-N 0.000 claims description 8
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 238000007598 dipping method Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 claims 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims 1
- 229910052814 silicon oxide Inorganic materials 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 238000009776 industrial production Methods 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- 229910000838 Al alloy Inorganic materials 0.000 description 19
- 239000010410 layer Substances 0.000 description 14
- 230000003068 static effect Effects 0.000 description 12
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000001035 drying Methods 0.000 description 7
- 239000004745 nonwoven fabric Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 235000019441 ethanol Nutrition 0.000 description 5
- 238000011282 treatment Methods 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 239000002105 nanoparticle Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 4
- 239000004753 textile Substances 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000003599 detergent Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 230000002209 hydrophobic effect Effects 0.000 description 3
- 238000013532 laser treatment Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 238000003892 spreading Methods 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- 229920001661 Chitosan Polymers 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
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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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
-
- 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
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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)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a method for preparing a novel super-hydrophobic coating material, which has the advantages of low price and easy obtainment of used raw materials, greatly shortened preparation time, capability of reacting at normal temperature and suitability for large-scale industrial production. Can be widely applied to the surfaces of common materials such as metal plates, glass plates, wood plates, cloth and the like.
Description
Technical Field
The invention relates to the technical field of hydrophobic materials, in particular to a manufacturing method and application of a novel super-hydrophobic coating material.
Background
Super-hydrophobic is a new material, which is defined as a material with a stable contact angle of more than 150 degrees on the surface and a rolling contact angle of less than 10 degrees, and can clean the place needing clean by itself. Two conditions need to be met for realizing superhydrophobicity: firstly, the surface of the material has very low surface energy; secondly, a micro-nano coarse double structure is constructed on the surface of the material. At present, the construction of the double structure can be easily realized by photolithography, chemical vapor deposition, sol-gel method, layer-by-layer deposition method, etc., but most of these techniques are expensive, slow or require special equipment, which hinders large-scale industrial production.
At present, the research on the super-hydrophobic material mainly focuses on the research on metal surfaces, plant fiber surfaces, non-woven fabric surfaces, hydrophobic coatings and the like. Patent CN110607492A discloses a method for improving super-hydrophobic performance of aluminum alloy, which relates to the technical field of metal material surface modification, and comprises the following steps: s1: carrying out solid solution treatment on the aluminum alloy at 480-510 ℃ to obtain solid-dissolved aluminum alloy; s2: carrying out aging treatment on the aluminum alloy subjected to solid solution at 160-200 ℃ to obtain an aged aluminum alloy; s3: carrying out grinding and polishing treatment on the aged aluminum alloy to obtain a polished aluminum alloy; s4: carrying out laser treatment on the polished aluminum alloy to obtain the aluminum alloy subjected to laser treatment; s5: and carrying out chemical etching on the aluminum alloy subjected to the laser treatment to obtain the aluminum alloy with the super-hydrophobic property, wherein the preparation method is complex in process, needs treatment under a high-temperature condition, and is not beneficial to industrial production.
Patent CN108972777A discloses a preparation method of super-hydrophobic bamboo/wood: drying bamboo and wood, soaking in a toluene # ethanol mixed solution, vacuumizing, soaking, drying, ultrasonically cleaning, and vacuum drying for later use; preparing spherical ZnO nanoparticles, dispersing the spherical ZnO nanoparticles into absolute ethyl alcohol, dropwise adding the absolute ethyl alcohol to the surfaces of bamboo and wood, and drying to form spherical ZnO nanoparticle thin layers; and continuously reacting to form fusiform ZnO nanoparticles, taking out, cooling, cleaning, drying, and vacuum drying to obtain bamboo and wood products with the super-hydrophobic function. Patent CN108951105A discloses a method for preparing super-hydrophobic cotton-flax textile fabric, which comprises the steps of firstly carrying out steam treatment on cotton-flax fabric, and then oxidizing carboxymethyl chitosan to make SiO2The micrometer particles and ZnO micrometer particles are connected to cotton and linen textile fabric, and Ti (SO)4)2Hydrolysis occurs, and the generated titanium dioxide nano-ions are deposited on the cotton-flax fiber fabric and SiO2The surfaces of the micron particles and the ZnO micron particles form a complex multi-level microstructure, so that the roughness of the surface of the cotton and linen fibers in the cotton and linen textile fabric is greatly improved, the cotton and linen textile fabric has stronger hydrophobic property, the method has complex process, still needs reaction at 70-80 ℃, has long preparation time, and is not beneficial to industrializationAnd (4) producing.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a manufacturing method of a novel super-hydrophobic coating material, which is widely applied to the surface of a common material, has a simple process, can react at normal temperature (0-35 ℃) and is low in cost.
The purpose of the invention is realized by adopting the following technical scheme:
a manufacturing method of a novel super-hydrophobic coating material comprises the following steps:
1) superhydrophobic SiO2The preparation method of the dispersion comprises adding the super-hydrophobic silica powder into anhydrous ethanol, stirring for ultrasonic dispersion, adding α -ethyl cyanoacrylate, and stirring to obtain super-hydrophobic SiO2The dispersion liquid comprises 0.0079-0.0237: 1-3: 0.0106-0.0318 mass ratio of absolute ethyl alcohol, super-hydrophobic silicon dioxide powder and α -ethyl cyanoacrylate;
2) coating a layer of epoxy resin and/or finishing paint on the surface layer of a material to be coated, cooling and solidifying for later use, and aiming at providing a viscous bottom layer which plays a role in fixing and sticking;
3) subjecting the super-hydrophobic SiO obtained in step 1)2And (3) coating the dispersion liquid on the surface of the material treated in the step 2), and solidifying to obtain the novel super-hydrophobic coating material.
Further, in the step 1), the super-hydrophobic SiO2SiO of the Dispersion2The concentration is 100-200mg/m L.
And further, in the step 1), stirring and ultrasonic dispersing for 5-15 min.
Further, in the step 3), the solidification time is 30s-30 min.
The application of the preparation method of the novel super-hydrophobic coating material comprises one or more of a metal plate (such as a magnesium aluminum alloy plate), a glass plate, a wood plate and cloth.
Further, the novel superhydrophobic coating material is used by at least one of a coating method, a spray method, and a dipping method.
Compared with the prior art, the invention has the beneficial effects that:
(1) the raw materials used by the preparation method of the novel super-hydrophobic coating material are cheap and easy to obtain, the preparation time is greatly shortened, the reaction can be carried out at normal temperature, and the preparation method is suitable for large-scale industrial production.
(2) The preparation method of the novel super-hydrophobic coating material can be widely applied to the surfaces of common materials such as metal plates, glass plates, wood plates, cloth and the like.
Drawings
FIG. 1 is a picture of an aluminum magnesium alloy object of a water drop in the novel superhydrophobic coating material prepared by the invention in example 1;
FIG. 2 is a graph showing the effect of the static contact angle of a water droplet in example 1;
FIG. 3 is a diagram of a glass object of a water drop in the novel superhydrophobic coating material prepared by the invention in example 2;
FIG. 4 is a graph showing the effect of the static contact angle of a water droplet in example 2;
FIG. 5 is a schematic representation of a wood panel of the novel superhydrophobic coating material prepared by the present invention with water droplets in example 3;
FIG. 6 is a graph showing the effect of the static contact angle of a water droplet in example 3;
FIG. 7 is a schematic representation of a nonwoven fabric of the novel superhydrophobic coating material prepared by the present invention with water droplets in example 4;
FIG. 8 is a graph showing the effect of the static contact angle of a water droplet in example 4;
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
Example 1
(1) Superhydrophobic SiO2The preparation method of the dispersion comprises adding 10g of super-hydrophobic silicon dioxide powder into 50m L ethanol solvent, stirring, performing ultrasonic dispersion for 5min, adding 50ml of α -ethyl cyanoacrylate, and stirring to obtain super-hydrophobic SiO2Dispersion of SiO2The concentration of (2) was 200mg/m L.
(2) And (3) preparing a bottom layer, namely cleaning a conventional magnesium-aluminum alloy plate (10cm × 10, 10cm × 1cm) by using detergent, spreading the cleaned magnesium-aluminum alloy plate on a table top after drying, coating a layer of epoxy resin on the surface of the magnesium-aluminum alloy plate by adopting a coating method, and quickly forming a film at room temperature for solidification, wherein the solidification time is about 5 min.
(3) Coating a layer of the super-hydrophobic SiO obtained in the step 1) on the surface layer of the magnesium-aluminum alloy plate in the step 2) by adopting a coating method2The dispersion was allowed to set at room temperature for 5 min. The static contact angle of the obtained super-hydrophobic magnesium-aluminum alloy plate to water is 152.408 degrees, the real picture of the magnesium-aluminum alloy plate after water drops are coated is shown in figure 1, and the effect of the static contact angle of the water drops is shown in figure 2.
Example 2
(1) Superhydrophobic SiO2The preparation method of the dispersion comprises adding 10g of super-hydrophobic silicon dioxide powder into 50m L ethanol solvent, stirring, performing ultrasonic dispersion for 5min, adding 50ml of α -ethyl cyanoacrylate, and stirring to obtain super-hydrophobic SiO2A dispersion wherein the concentration of silica was 100mg/m L.
(2) And (3) preparing a bottom layer, namely cleaning a conventional glass plate (10cm × 10cm × 1cm) by using detergent, spreading the cleaned glass plate on a table top after drying, coating a layer of epoxy resin on the surface of the glass plate by adopting a coating method, and quickly forming a film at room temperature for solidification, wherein the solidification time is about 5 min.
(3) Coating a layer of the super-hydrophobic SiO obtained in the step 1) on the surface layer of the magnesium-aluminum alloy plate treated in the step 2) by adopting a coating method2The dispersion was allowed to set at room temperature for 5 min. The static contact angle of the obtained super-hydrophobic glass plate to water is 154.101 degrees, the picture of the glass plate after the water drop is coated is shown in figure 3, and the effect of the static contact angle of the water drop is shown in figure 4.
Example 3
(1) Superhydrophobic SiO2The preparation of the dispersion comprises adding 15g of super-hydrophobic silicon dioxide powder into 150m L ethanol solvent, stirring, performing ultrasonic dispersion for 15min, adding 150ml of α -ethyl cyanoacrylate, and stirring to obtain super-hydrophobic SiO2A dispersion wherein the concentration of silica was 200mg/m L.
(2) And (3) preparing a bottom layer, namely cleaning a conventional wood board (10cm × 10cm × 1cm) by using detergent, spreading the wood board on a table top after drying, coating a layer of finishing paint on the surface of the wood board by using a coating method, and quickly forming a film at room temperature for solidification, wherein the solidification time is about 5 min.
3) Coating a layer of the super-hydrophobic SiO obtained in the step (1) on the surface layer of the wood board treated in the step 2) by adopting a coating method2The dispersion was allowed to set at room temperature for 5 min. The static contact angle of the obtained super-hydrophobic wood board to water is 151.1 degrees. The physical image of the water drop on the coated wood board is shown in fig. 5, and the effect of the static contact angle of the water drop is shown in fig. 6.
Example 4
(1) Superhydrophobic SiO2The preparation method of the dispersion comprises adding 10g of super-hydrophobic silicon dioxide powder into 100m L ethanol solvent, stirring, dispersing and ultrasonically dispersing for 5min, adding 100ml of α -ethyl cyanoacrylate, and stirring to obtain super-hydrophobic SiO2A dispersion wherein the concentration of silica was 200mg/m L.
(2) The low surface energy bottom layer is prepared by soaking a conventional non-woven fabric (10cm × 10, 10cm × 1cm) in epoxy resin for 1min, taking out, and rapidly forming film and solidifying at room temperature for about 5 min.
(3) Immersing the non-woven fabric treated in the step 2) into the super-hydrophobic SiO obtained in the step 1) by adopting an extraction method2The dispersion is taken out for 1min, and rapidly formed into film at room temperature for solidification, wherein the solidification time is about 5 min. The static contact angle of the obtained super-hydrophobic nonwoven fabric to water is 154.519 degrees, the real image of the water drop on the coated nonwoven fabric is shown in figure 7, and the effect of the static contact angle of the water drop is shown in figure 8.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (6)
1. The preparation method of the novel super-hydrophobic coating material is characterized by comprising the following steps:
1) superhydrophobic SiO2The preparation method of the dispersion liquid comprises the following steps: adding super-hydrophobic di-component into absolute ethyl alcoholStirring and ultrasonically dispersing silicon oxide powder, then adding α -ethyl cyanoacrylate, and uniformly stirring to obtain the super-hydrophobic SiO2The dispersion liquid comprises 0.0079-0.0237: 1-3: 0.0106-0.0318 mass ratio of absolute ethyl alcohol, super-hydrophobic silicon dioxide powder and α -ethyl cyanoacrylate;
2) coating a layer of epoxy resin and/or finishing paint on the surface of a material to be coated, and cooling and solidifying for later use;
3) subjecting the super-hydrophobic SiO obtained in step 1)2And (3) coating the dispersion liquid on the surface of the material treated in the step 2), and solidifying to obtain the novel super-hydrophobic coating material.
2. The method for preparing the novel super-hydrophobic coating material according to claim 1, wherein in the step 1), the super-hydrophobic SiO is prepared2SiO of the Dispersion2The concentration is 100-200mg/m L.
3. The method for preparing the novel super-hydrophobic coating material according to claim 1, wherein in the step 1), the ultrasonic dispersion is performed for 5-15 min under stirring.
4. The method for preparing the novel superhydrophobic coating material according to claim 1, wherein in the step 3), the solidification time is 30s-30 min.
5. The application of the method for preparing the novel super-hydrophobic coating material as claimed in any one of claims 1 to 4, wherein the novel super-hydrophobic coating material is applicable to a range including one or more of metal plates, glass plates, wood plates and cloth.
6. The use of the novel superhydrophobic coating material of claim 5, wherein the novel superhydrophobic coating material is applied by a method comprising at least one of a coating method, a spray coating method, and a dipping method.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112063208A (en) * | 2020-08-24 | 2020-12-11 | 湖南松井新材料股份有限公司 | Hydrophobic coating composition and preparation method and product thereof |
| CN113292876A (en) * | 2021-05-31 | 2021-08-24 | 广州大学 | Super-hydrophobic coating and preparation method and application thereof |
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| CN112063208A (en) * | 2020-08-24 | 2020-12-11 | 湖南松井新材料股份有限公司 | Hydrophobic coating composition and preparation method and product thereof |
| CN113292876A (en) * | 2021-05-31 | 2021-08-24 | 广州大学 | Super-hydrophobic coating and preparation method and application thereof |
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