CN105176150B - A kind of resistance to knife cuts the preparation method of the transparent hydrophobic coating of acid-alkali-corrosive-resisting - Google Patents
A kind of resistance to knife cuts the preparation method of the transparent hydrophobic coating of acid-alkali-corrosive-resisting Download PDFInfo
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Abstract
The preparation method of the transparent hydrophobic coating of acid-alkali-corrosive-resisting is cut the invention discloses a kind of resistance to knife.Low-surface-energy material is put into magnetic agitation in solvent by this method first dissolves it, oxide nano particles are added again and are sufficiently mixed in above-mentioned solution, the transparent sol solution of dilution is coated on into substrate surface solidifies it, finally in the way of bar is coated with by oxide nano particles solution coating on the transparent adhesive tape after solidification, after after the solvent volatilization of nanoparticles solution, transparent hydrophobic coating is obtained.Transparent adhesive tape coating after dilution and bar rubbing method are combined by the preparation method of transparent hydrophobic coating of the present invention, realize that super-hydrophobic coat is transparent to be taken into account with anti abrasive, with the simple, advantage that durability is strong, cost is low, easy to use is prepared, it is adapted to large-scale industrial production and daily use.
Description
Technical field
The present invention relates to a kind of preparation method of coating, more particularly to a kind of resistance to knife cuts the transparent hydrophobic of acid-alkali-corrosive-resisting
The preparation method of coating.
Background technology
After rain, the raindrop for resting on lotus leaf surface show approximately round shape, and easily slip.What is slipped
During, raindrop will take away the dirt for being attached to lotus leaf surface and bacterium.This contact angle is more than 150 °, slide angle by scientific circles
Surface less than 10 ° is referred to as super hydrophobic surface.Because super hydrophobic surface has the spy such as waterproof, automatically cleaning, anticorrosion, ice-covering-proof
Point, it is just obtaining more and more widely paying attention to and paying close attention in theoretical research and commercial Application.
One important applied field of super hydrophobic surface is power system.At present, the widely used RTV coating of power system is made
Cause resistance to pollution flashover because of its excellent hydrophobicity and migration of hydrophobicity to prevent the major measure of pollution flashover accident generation, RTV
Voltage is greatly improved, and significantly reduces the occurrence frequency of pollution flashover accident.But the static contact angle of RTV coating is less than 120 °,
The attachment of dirt can not be effectively prevented, super hydrophobic coating can more significantly improve power system antifouling work ability.Separately
On the one hand, the substantially supporting wet process of FGD WF-GD devices based on limestone-gypsum method of current fired power generating unit.By
Increasing temperature drop in the humidity of flue gas after desulfurization, removal efficiency reduction of the desulfurizer to sulfur trioxide makes flue gas ratio not in addition
Had more during desulfurization in corrosivity, therefore power system at present in the urgent need to working out corresponding erosion shield.Super-hydrophobic coat
Due to its special micro nano structure, a layer of air is often there is between coating surface and corrosive liquid every capsule, is electric power
The chimney anticorrosion of system provides a solution.
And by super-hydrophobic coat, other performances are lifted, and are such as improved optical property and are prepared transparent super-hydrophobic coat,
In the application field to many clear coats, such as building window glass, windshield, contact lens eyepiece field have
Huge application prospect.
Super hydrophobic surface is prepared to generally require while meeting two conditions：One be surface need with micron or nanometer or
Person's micron and nanometer composite structure；Two be that surface needs to be attached with a layered low-surface energy material or surface and inherently has low-surface-energy
Material is constituted.Theoretical based on this, scientists both domestic and external are sprayed by electrodeposition process, template, nano particle suspension
A variety of methods and techniques such as coating, have prepared super hydrophobic surface.A universal problem of current super hydrophobic surface is exactly that its is crisp
Weak property, these surfaces would generally lose super-hydrophobicity after knife is cut.Document (Journal of Material Chemical A,
2013,1：13869-13877) describe it is a kind of the method that tailor-made polymer thing prepares super hydrophobic surface is poured by template of taro leaf,
The shortcoming of this method is that taro leaf has a size limitation, and prepares tailor-made polymer thing and need by the complicated chemical reaction of multistep.Document
(ACS Appl ied Materials&Interfaces,2014,6:8762-8770) report a kind of electric deposition nickel micron knot
The method of silicon fluoride is deposited after structure, the shortcoming of this method is the evaporated device that silicon fluoride is poisonous, expensive and needs are special.Text
Offer (Science, 2015,347:1132-1135) describe a kind of titania nanoparticles that silicon fluoride is modified and spray
Glue is combined the method that resistance to knife cuts super-hydrophobic coat for preparing, but the type coating and opaque；Silicon fluoride is poisonous and expensive；
It is difficult to control using immersion, the coating layer thickness brushed or spray preparation.
The content of the invention
The present invention is that, in order to overcome above-mentioned defect in the prior art, the method being coated with by gluing and bar prepares resistance to knife and cut
The transparent hydrophobic coating of acid-alkali-corrosive-resisting.
A kind of resistance to knife cuts the preparation method of the transparent hydrophobic coating of acid-alkali-corrosive-resisting, carries out in accordance with the following steps：
(1) 1-3wt% low-surface-energy materials are put into solvent, magnetic agitation 12-24 hours, according to low-surface-energy material
Differential responses temperature setting be 25-80 DEG C so that it fully dissolves；1-6wt% oxide nano particles are added into low table again
Face can be sufficiently mixed in material solution, and modified oxide nanoparticles solution is made, standby；
(2) transparent adhesive tape dilution is made by transparent sol solution using diluent, transparent sol solution is coated on substrate surface, and
Solidify it；
(3) modified oxide nanoparticles solution is coated on the transparent adhesive tape after solidification in the way of bar is coated with, treated
After the solvent volatilization of nanoparticles solution, transparent hydrophobic coating is obtained.
The low-surface-energy material is trim,ethylchlorosilane, hexamethyldisilane, silane coupling agent KH550, silane coupling
One or more in agent KH560, silane coupling agent KH590, aliphatic acid, mercaptan.
The solvent is methanol, ethanol, isopropanol, glycerine, n-butanol, toluene, dimethylbenzene, one kind or one in hexane
More than kind.
The oxide nano particles are nano SiO 2 particle, titania nanoparticles or zinc-oxide nano
Grain.
The transparent adhesive tape is silicon rubber, epoxide-resin glue, acrylic acid synthetic resin gum, one kind or one kind in acrylic glue
More than.
The diluent is n-hexane, hexamethylene, toluene, the one or more in dimethylbenzene.
The substrate is metal, glass, rubber, plastics, paper, the one or more in concrete.
In the mode that step (3) bar is coated with, the thickness of coating, line are controlled by adjusting the model of bar spreader
Rod coating device model 10-200 μ m thick bar spreaders.
Compared with prior art, the present invention has the advantages that：The preparation method of transparent hydrophobic coating of the present invention
Transparent adhesive tape and bar rubbing method are combined, wear-resistant the taking into account with transparency of coating is realized.Transparent adhesive tape has adhesion strong
Advantage, can significantly lift the adhesion of hydrophobic nanoparticles and substrate；Because the viscosity of transparent adhesive tape is larger, transparent adhesive tape is applied
Layer often flatness it is bad and it is internal be easily mixed with air, therefore prepare surfacing using solvent dilution transparent adhesive tape herein and be free of
Leachy coating.The light transmittance of coating and the close phase of thickness for the nano-oxide particles coating being coated on transparent gel coating
Close, need to be by the thickness control of nano-oxide particles coating in certain thickness in order to take into account transparency and wear resistance.Bar is applied
Cloth device is only needed to scrape by a step and smeared, you can prepare thickness determination coating, can easily and fast, efficiently control nanometer
The thickness of oxide particulate coatings.The present invention, which has, prepares the simple, advantage that durability is strong, cost is low, easy to use, is adapted to big
Technical scale is produced and daily use.
Brief description of the drawings
Fig. 1 is the demonstration graph of transparent hydrophobic coating in embodiment 1.
Fig. 2 is the scanning electron microscope (SEM) photograph of super-hydrophobic coat in embodiment 1.
Fig. 3 is the contact angle test chart of super-hydrophobic coat obtained in embodiment 1 and water droplet.
Fig. 4 is that obtained super-hydrophobic coat knife in embodiment 1 cuts experimental demonstration figure.
Fig. 5 is obtained super-hydrophobic automatic cleaning experimental demonstration figure in embodiment 1.
Fig. 6 is that obtained super-hydrophobic coat in embodiment 1 soaks one in 3M hydrochloric acid solutions and 3M sodium hydroxide solutions
With the contact angle test chart of water droplet after it.
Fig. 7 is the demonstration graph of transparent hydrophobic coating in embodiment 4.
Fig. 8 is the demonstration graph of super-hydrophobic coat in embodiment 5.
Embodiment
Below in conjunction with the accompanying drawings, the embodiment to the present invention is described in detail, it is to be understood that the guarantor of the present invention
Shield scope is not limited by embodiment.
Embodiment 1
A kind of resistance to knife cuts the preparation method of the transparent hydrophobic coating of acid-alkali-corrosive-resisting, carries out in accordance with the following steps：
(1) preparation of modified oxide nanoparticles solution：
1wt% aliphatic acid and 1wt% trim,ethylchlorosilanes are put into ethanol, magnetic agitation 12 hours, reaction temperature is set
50 DEG C are set to, so that it fully dissolves；4wt% nano SiO 2 particles are added again and filled in low-surface-energy material ethanol solution
Divide mixing, silica nanoparticle solution is made standby；
(2) silicon rubber dilution is made by transparent sol solution using hexamethylene, transparent sol solution is coated on glass surface, and
Solidify it；
(3) silica nanoparticle solution is coated on the transparent adhesive tape after solidification in the way of bar is coated with, passed through
Adjust the model of bar spreader to control the thickness of coating, the μ m thick bar spreader of bar spreader model 100 treats second
After alcoholic solvent volatilization, transparent hydrophobic coating is obtained.
Transparent hydrophobic coating prepared by this method, as shown in figures 1 to 6；Fig. 1 is the demonstration graph of transparent hydrophobic coating, from
It can be seen from the figure that, water droplet is held round above；Fig. 2 is the scanning electron microscope (SEM) photograph of super-hydrophobic coat；Fig. 3 is obtained super thin
The contact angle test chart of water coating and water droplet；Fig. 4 is that obtained super-hydrophobic coat knife cuts experimental demonstration figure, in the lecture experiment
In, with knife after super-hydrophobic coat marks " mouth " font one by one, this coating still has super-hydrophobicity；Fig. 5 is obtained
Super-hydrophobic automatic cleaning experimental demonstration figure, automatically cleaning effect is good；Fig. 6 is obtained super-hydrophobic coat in 3M hydrochloric acid solutions and 3M
Contact angle test chart after being soaked one day in sodium hydroxide solution with water droplet.
Embodiment 2
A kind of resistance to knife cuts the preparation method of the transparent hydrophobic coating of acid-alkali-corrosive-resisting, carries out in accordance with the following steps：
(1) preparation of modified oxide nanoparticles solution：
1wt% trim,ethylchlorosilanes are put into n-butanol, magnetic agitation 12 hours, reaction temperature is set to 60 DEG C, with
It is set fully to dissolve；2wt% Zinc oxide nanoparticles are added again and are sufficiently mixed in trim,ethylchlorosilane butanol solution, are made
Zinc oxide nanoparticle solution for standby；
(2) dilution of acrylic acid synthetic resin gum is made by transparent sol solution using toluene, transparent sol solution is coated on aluminium
Surface, and solidify it；
(3) in the way of bar is coated with by Zinc oxide nanoparticle solution coating on the transparent adhesive tape after solidification, pass through and adjust
The model of nodel line rod coating device controls the thickness of coating, and the μ m thick bar spreader of bar spreader model 50 treats positive fourth
After alcoholic solvent volatilization, transparent hydrophobic coating is obtained.
Embodiment 3
A kind of resistance to knife cuts the preparation method of the transparent hydrophobic coating of acid-alkali-corrosive-resisting, carries out in accordance with the following steps：
(1) preparation of modified oxide nanoparticles solution：
3wt% hexamethyldisilanes are put into dimethylbenzene, magnetic agitation 12 hours, reaction temperature is set to 80 DEG C, with
It is set fully to dissolve；6wt% titania nanoparticles are added again and are sufficiently mixed in hexamethyldisilane xylene solution, are made
Into titania nanoparticles solution for standby；
(2) dilution of acrylic glue is made by transparent sol solution using n-hexane, transparent sol solution is coated on acrylic board
Surface, and solidify it；
(3) in the way of bar is coated with by titania nanoparticles solution coating on the transparent adhesive tape after solidification, pass through
Adjust the model of bar spreader to control the thickness of coating, the μ m thick bar spreader of bar spreader model 200 treats two
After toluene solvant volatilization, transparent hydrophobic coating is obtained.
Embodiment 4
A kind of resistance to knife cuts the preparation method of the transparent hydrophobic coating of acid-alkali-corrosive-resisting, carries out in accordance with the following steps：
(1) preparation of modified oxide nanoparticles solution：
1wt% aliphatic acid and 1wt% trim,ethylchlorosilanes are put into ethanol, magnetic agitation 12 hours, reaction temperature is set
50 DEG C are set to, so that it fully dissolves；4wt% nano SiO 2 particles are added again and filled in low-surface-energy material ethanol solution
Divide mixing, silica nanoparticle solution is made standby；
(3) silica nanoparticle solution is coated on glass surface in the way of bar is coated with, by adjusting bar
The model of spreader controls the thickness of coating, and the μ m thick bar spreader of bar spreader model 100 treats that alcohol solvent is waved
After hair, transparent hydrophobic coating is obtained.
Transparent hydrophobic coating prepared by this method, as shown in fig. 7, after being cut to super hydrophobic surface progress knife, knife was cut
Local super hydrophobic surface be destroyed, now water droplet can not be held round above, but formed and the taper in direction is cut along knife.
Embodiment 5
A kind of resistance to knife cuts the preparation method of the transparent hydrophobic coating of acid-alkali-corrosive-resisting, carries out in accordance with the following steps：
(1) preparation of modified oxide nanoparticles solution：
1wt% aliphatic acid and 1wt% trim,ethylchlorosilanes are put into ethanol, magnetic agitation 12 hours, reaction temperature is set
50 DEG C are set to, so that it fully dissolves；4wt% nano SiO 2 particles are added again and filled in low-surface-energy material ethanol solution
Divide mixing, silica nanoparticle solution is made standby；
(2) silicon rubber dilution is made by transparent sol solution using hexamethylene, transparent sol solution is coated on glass surface, and
Solidify it；
(3) silica nanoparticle solution is coated on the transparent adhesive tape after solidification, after after alcohol solvent volatilization, obtained
Transparent hydrophobic coating.
Transparent hydrophobic coating prepared by this method, as shown in figure 8, the thickness of nano-oxide coating is excessive, causes to apply
There is crackle in layer surface, and transparency is very low.
Disclosed above is only several specific embodiments of the present invention, and still, the present invention is not limited to this, any ability
What the technical staff in domain can think change should all fall into protection scope of the present invention.
Claims (6)
1. a kind of resistance to knife cuts the preparation method of the transparent hydrophobic coating of acid-alkali-corrosive-resisting, it is characterised in that in accordance with the following steps
Carry out：
(1) 1-3wt% low-surface-energy materials are put into solvent, reaction temperature is set to 25- by magnetic agitation 12-24 hours
80 DEG C, so that it fully dissolves；1-6wt% oxide nano particles are added again and are sufficiently mixed in low-surface-energy material solution,
Modified oxide nanoparticles solution is made, it is standby；
(2) transparent adhesive tape dilution is made by transparent sol solution using diluent, transparent sol solution is coated on substrate surface, and make it
Solidification；
(3) modified oxide nanoparticles solution is coated on the transparent adhesive tape after solidification in the way of bar is coated with, treats solvent
After volatilization, transparent hydrophobic coating is obtained；
The low-surface-energy material is trim,ethylchlorosilane, hexamethyldisilane, aliphatic acid, one kind in mercaptan or it is a kind of with
On；
The transparent adhesive tape is silicon rubber and/or acrylic acid synthetic resin gum.
2. a kind of resistance to knife according to claim 1 cuts the preparation method of the transparent hydrophobic coating of acid-alkali-corrosive-resisting, it is special
Levy and be, the solvent is methanol, ethanol, isopropanol, the one or more in glycerine.
3. a kind of resistance to knife according to claim 1 cuts the preparation method of the transparent hydrophobic coating of acid-alkali-corrosive-resisting, it is special
Levy and be, the oxide nano particles are nano SiO 2 particle, titania nanoparticles or Zinc oxide nanoparticle.
4. a kind of resistance to knife according to claim 1 cuts the preparation method of the transparent hydrophobic coating of acid-alkali-corrosive-resisting, it is special
Levy and be, the diluent is n-hexane, hexamethylene, toluene, the one or more in dimethylbenzene.
5. a kind of resistance to knife according to claim 1 cuts the preparation method of the transparent hydrophobic coating of acid-alkali-corrosive-resisting, it is special
Levy and be, the substrate is metal, glass, rubber, plastics, paper, the one or more in concrete.
6. a kind of resistance to knife according to claim 1 cuts the preparation method of the transparent hydrophobic coating of acid-alkali-corrosive-resisting, it is special
Levy and be, in the mode that step (3) bar is coated with, the thickness of coating, line are controlled by adjusting the model of bar spreader
Rod coating device model 10-200 μ m thick bar spreaders.
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| CN114231060B (en) * | 2021-12-24 | 2023-01-17 | 中国船舶重工集团公司第七二五研究所 | High-durability super-hydrophobic coating material capable of being removed as required and preparation method thereof |
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