CN106009791A - Super-hydrophilic particle hybridized super-hydrophobic coating and preparation method thereof - Google Patents
Super-hydrophilic particle hybridized super-hydrophobic coating and preparation method thereof Download PDFInfo
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- CN106009791A CN106009791A CN201610323928.2A CN201610323928A CN106009791A CN 106009791 A CN106009791 A CN 106009791A CN 201610323928 A CN201610323928 A CN 201610323928A CN 106009791 A CN106009791 A CN 106009791A
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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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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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
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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Abstract
The invention relates to a super-hydrophilic particle hybridized super-hydrophobic coating and a preparation method thereof. A substrate is ultrasonically cleaned through acetone, absolute ethyl alcohol and deionized water in sequence for 15 min, and oil stain and dust on the surface are removed; then, absolute ethyl alcohol is used for elution, and cold-blast air is used for drying for use. Nanometer SiO2 sol is subjected to fluoroalkyl silane modification, a super-hydrophobic coating spraying solution is obtained, a super-hydrophilic monodisperse sphere type nanometer SiO2 solution, silica powder and glass beads are added into the super-hydrophobic coating spraying solution, stirred to be uniform and sprayed on the substrate, and after solidification, the super-hydrophilic particle hybridized super-hydrophobic coating is obtained. The coating has the low adhesion and super-hydrophobicity, and the condensation and dewfall efficiency and the dewdrop adsorption amount are remarkably high compared with a super-hydrophobic coating. The preparation technology is simple, no pollution is caused, operation is easy, the apparent mass is good, the cost is low, and wide application prospect and huge market benefits are achieved on the aspects of heat exchangers, water collection, seawater desalination and the like.
Description
Technical field
The invention belongs to technical field of nanometer material preparation, be specifically related to the super-hydrophobic of a kind of super hydrophilic granule hydridization
Coating and technology of preparing thereof
Background technology
Under low temperature and high relative humidity environment, surface of solids condensation and frosting are the most universal.They not only make the surface of solids accelerate
Corrosion, reduces service life of equipment, and the moisture film owing to producing in condensation process decreases solid-air interface
The temperature difference, causes thermal resistance to increase, and energy consumption increases, and condensation heat transfer efficiency reduces, and greatly causes energy waste.Root
According to studying discovery both at home and abroad, in condensation process, condensation and frosting are extremely complex processes, relate to
Drop forming core with grow up, the aspect such as interface, calorifics, drop transport, steam runs into water-wetted surface can be quick
Forming core with grow up, but due to water-wetted surface bigger surface can, drop causes greatly very at surface adhesive
Difficult desorption, quickly forms moisture film, causes thermal resistance to strengthen；On the contrary, steam is big at super hydrophobic surface nucleation barrier,
Forming core is waited a moment less, steam once forming core, and drop can merge, migrate, from behaviors such as springs so that it is very
Fast desorption surface, takes away heat, if in condensation process, drop can quickly forming core with grow up, rapidly
Come off in the surface of solids, this will heat exchanger, catchment, desalinization, oil-water separation, the field such as micro-fluidic
It is with a wide range of applications.Therefore, prepare non-homogeneous wettable surfaces combine water-wetted surface forming core fast and many and
The advantage that super hydrophobic surface drop is quickly desorbed seems extremely important.
At present, the principle that non-homogeneous wettable surfaces's preparation method and technology are followed substantially first prepares low adhesion
Super hydrophobic surface, then makes surface portion lose ultra-hydrophobicity by method mechanically or chemically, finally obtains
Super-hydrophobic/super hydrophilic heterogeneity wettable surfaces.Such as, Bai is by TiO2Solution is spin-coated on slide, logical
Crossing 450 DEG C, 2.5h heat treatment forms one layer of nano level TiO on slide2Granule, be fluorinated afterwards is super thin
Water surface, is finally placed on template with TiO2On the slide of granule, its ultra-vioket radiation is formed super-hydrophobic/super close
Water patterns heterogeneity wettable surfaces [Adv.Mater., 2014,26 (29): 5025-5030]；
TMV virus is first infected on silicon chip surface by Emre, and silicon chip is immersed in Na2PdCl4And Na3PO4Mixed
Close and solution activates TMV virus surface, then use NiCl2, Na2B4O7, dimethylamine borane bath deposition
Upper nickel nano wire, then modify to obtain super hydrophobic surface with silicon fluoride, finally, template is placed on super hydrophobic surface and uses
Gas ions bombardment forms super-hydrophobic/super hydrophilic patterning heterogeneity wettable surfaces [ACS Appl.Mater.
Interfaces., 2016,8 (8): 5729-5736].Existing non-homogeneous wettable surfaces's technology of preparing and side
It is complicated that method pursues patterning, preparation technology and method, and substrate is limited single, with high costs, and unsuitable large area should
With, therefore preparing can be extremely urgent with the non-homogeneous wettable surfaces of large-area applications.
Summary of the invention
The present invention relates to super-hydrophobic coat of a kind of super hydrophilic granule hydridization and preparation method thereof.
The technical scheme is that the super-hydrophobic coat of a kind of super hydrophilic granule hydridization, to Nano-meter SiO_22Colloidal sol enters
Row silicon fluoride is modified, it is thus achieved that super-hydrophobic coat spray solution, by the single dispersing ball Nano-meter SiO_2 of Superhydrophilic2
Solution, silicon powder, any one or more mixture of glass microballoon join in super-hydrophobic coat spray solution,
Stir, be sprayed on the substrate of cleaning, after solidification, obtain the super-hydrophobic coat of super hydrophilic granule hydridization；Super
Hydrophilic particle is Nano-meter SiO_2 in super-hydrophobic coat20.1～1 times of colloidal sol quality.
Substrate includes copper sheet, nickel sheet, aluminium flake, stainless steel substrates, glass, pottery, polypropylene, polyethylene, gathers
Any one in urethane.
Substrate shape includes flat surface, curved surface or compromise face.
Described super-hydrophobic coat spray solution is under 20～40 DEG C of water bath condition, by 50～100 mass parts
Dehydrated alcohol, 1～5 mass parts ammonia, 5～10 mass parts deionized water join in reactor, stirring, by
It is added dropwise to the Nano-meter SiO_2 of 0.5～5 mass parts2Colloidal sol, after stirring；By the 0.5～2 positive silicic acid of mass parts four
Ethyl ester is added dropwise in solution, and reaction is fully；Finally 2～5 mass parts silicon fluorides are added drop-wise in solution,
Stirring reaction obtains.
Described Nano-meter SiO_22Colloidal sol pattern is single dispersing chain type, single dispersing ball.
The particle diameter of the Superhydrophilic granule stated of described Superhydrophilic granule is single dispersing ball SiO2Granule is
100nm～10 μm, the particle diameter of other microgranules is 10～60 μm.
Described Nano-meter SiO_22Aerosol particle size is between 10～100nm.
The method of the super-hydrophobic coat of the super hydrophilic granule hydridization described in preparation, described method comprises the following steps:
(1) preparation of super-hydrophobic coat solution:
Under 20～40 DEG C of water bath condition, by 50～100 mass parts dehydrated alcohol, 1～5 mass parts ammonia, 5～
10 mass parts deionized waters join in reactor, stirring, are added dropwise over the Nano-meter SiO_2 of 0.5～5 mass parts2
Colloidal sol, after stirring；Being added dropwise in solution by 0.5～2 mass parts tetraethyl orthosilicates, reaction is filled
Point；Finally 2～5 mass parts silicon fluorides are added drop-wise in solution, stirring reaction, it is thus achieved that super-hydrophobic coat solution；
(2) preparation of the super-hydrophobic coat solution of super hydrophilic granule hydridization, joins system by Superhydrophilic granule
In the super-hydrophobic coat solution got ready, continue stirring until mixed solution is dispersed；
(3) preparation of the super-hydrophobic coat of super hydrophilic granule hydridization: use spraying, brushing, dip-coating, spin coating
In any one, the super-hydrophobic coat solution of super hydrophilic granule hydridization is coated to clean substrate surface, dries in the air
The super-hydrophobic coat of super hydrophilic granule hydridization is i.e. obtained after Gan.
When substrate is metal substrate successively with 800#, 1000#, 1500# sand papering, mechanically polish, with
After successively with acetone, dehydrated alcohol and deionized water ultrasonic cleaning, cold wind dries up the substrate obtaining cleaning.
Beneficial effect:
(1) Nano-meter SiO_22After granule modified, it is thus achieved that super-hydrophobicity, it be coated on substrate and can obtain excellence
Super-hydrophobicity, extremely low to the adhesiveness of water droplet.Under high humility or cryogenic conditions, super-hydrophobic coat surface is revealed
Drip and grow in drop-wise, and can be desorbed easily.
(2) use traditional method to build super hydrophilic district at super hydrophobic surface, need to use mould well prepared in advance
Version, by technology such as uv-exposure, plasma decomposition or modification, chemical deposition, electro-deposition, vapour depositions,
Carrying out constituency deposition, decompose or remove, not only cost height and complex process, substrate requirements is high, it is impossible at song
Face or flexible substrates etc. process, it is difficult to large-scale application.
(3) the super hydrophilic granule doping that the present invention proposes, super-hydrophobic coat remains in that super-hydrophobicity, to water
The adhesiveness dripped is extremely low, and uses traditional constituency to deposit, decompose or remove technique, although can be at super-hydrophobic table
Face builds super hydrophilic district, it is thus achieved that patterning super infiltration surface or non-homogeneous wettable surfaces or asymmetric wettability table
Face, but surface prepared by these methods, water droplet is difficult to desorption, and significantly increases the liquid on surface in super hydrophilic district
Drip adhesiveness.
(4) under high humility or cryogenic conditions, compared with super-hydrophobic coat surface, after the doping of super hydrophilic granule,
Surface dew drips nucleation rate and significantly improves, and still grows in drop-wise, and can be desorbed easily, and during desorption, dew drips size also
Less.The super-hydrophobic coat total surface condensation amount of super hydrophilic granule doping and desorption rate, the most significantly greater than non-impurity-doped
Super-hydrophobic coat surface, and single dispersing SiO2Granule doping better, this to promote water collection efficiency,
Augmentation of heat transfer is significant.
(5) preparation method of the present invention is low to substrate requirements, the hard such as metal, inorganic material, polymer
Or soft surface all can be coated, and to plane or curved surface the most not requirement, equipment simply, easily operate, becomes
This is the cheapest, can large-area construction, heat exchanger, catchment, there is huge application in the field such as desalinization.
Accompanying drawing illustrates:
Nano-meter SiO_2 at the bottom of Fig. 1 cuprio2The SEM of super-hydrophobic coat.
Nano-meter SiO_2 at the bottom of Fig. 2 cuprio2The condensation and dewfall of super-hydrophobic coat.
Fig. 3 water droplet adds the Static Contact of glass microballoon granule hydridization super-hydrophobic coat on the glass substrate.
Fig. 4 water droplet adds dispersed nano SiO in micrometre array silicon base2Granule hydridization super-hydrophobic coat
Static Contact.
The SEM of silicon powder granule hydridization super-hydrophobic coat is added at the bottom of Fig. 5 polyurethane-base.
Dispersed nano SiO is added at the bottom of Fig. 6 cuprio2The SEM of granule hydridization super-hydrophobic coat.
The SEM of silicon powder granule hydridization super-hydrophobic coat is added at the bottom of Fig. 7 cuprio.
Three kinds of coatings (super-hydrophobic coat, dispersed nano SiO at the bottom of Fig. 8 cuprio2Granule hydridization super-hydrophobic coat,
Silicon powder granule hydridization super-hydrophobic coat) Enhancing Nucleation Density figure.
Fig. 9 catchments result of the test figure.
Detailed description of the invention
Employed in the present invention is all mass parts.
A kind of preparation method of the super-hydrophobic coat of super hydrophilic granule hydridization, step is:
(1) pre-treatment: metallic substrates with 800#, 1000#, 1500# sand papering, mechanically polishes successively,
The most secondary acetone, dehydrated alcohol and deionized water ultrasonic cleaning 15min, cold wind dries up standby, and substrate is permissible
For metal substrates such as copper sheet, nickel sheet, aluminium flake, stainless steel substrates, it is also possible to be the inorganic material such as glass, pottery,
Can also is that the polymeric materials such as polypropylene, polyethylene, polyurethane, shape can be flat surface, it is also possible to be bent
Face or compromise face；
(2) preparation of super-hydrophobic coat solution:
Under 20～40 DEG C of water bath condition, by 50～100 parts of dehydrated alcohol, 1～5 part of ammonia, 5～10 parts go from
Sub-water joins in reactor, is stirred with the speed of 1500r/min, is added dropwise over the nanometer of 0.5～5 part
SiO2Colloidal sol, after stirring 30min；0.5～2 part of tetraethyl orthosilicate is added dropwise in solution, reaction
10～60min；Finally 2～5 parts of silicon fluorides are added drop-wise in solution, stir 24～64h, it is thus achieved that super-hydrophobic painting
Layer solution, described Nano-meter SiO_22Pattern can be single dispersing chain type, single dispersing ball；
(3) preparation of the super-hydrophobic coat solution of super hydrophilic granule hydridization, joins system by Superhydrophilic granule
In the super-hydrophobic coat solution got ready, continuation stirring more than 1h is until mixed solution is dispersed, and described is super
Hydrophilic granules can be single dispersing ball SiO of diameter 100nm～10 μm2Granule, particle diameter 10～60 μm
Silicon powder, the glass microballoon of diameter 10～60 μm, addition is Nano-meter SiO_2 in super-hydrophobic coat2Quality
0.1～1 times；
(4) preparation of the super-hydrophobic coat of super hydrophilic granule hydridization: use spraying, brushing, dip-coating, spin coating
Deng any one in technical method, the super-hydrophobic coat solution of super hydrophilic granule hydridization is coated to pre-treatment
Substrate surface, the super-hydrophobic coat of super hydrophilic granule hydridization can be obtained after drying.
Embodiment 1 bronze medal Substrate Substrate spraying process prepares Nano-meter SiO_22Super-hydrophobic coat
Under 20 DEG C of water bath condition, 50 parts of dehydrated alcohol, 1 part of ammonia, 5 parts of deionized waters are joined reactor
In, it is stirred with the speed of 1500r/min, is added dropwise over the chain type formula Nano-meter SiO_2 of 0.5 part2Colloidal sol, stirs
After mixing 30min；0.5 part of tetraethyl orthosilicate is added dropwise in solution, reacts 10min；Finally by 2
Part silicon fluoride is added drop-wise in solution, stirs 24h, it is thus achieved that super-hydrophobic coat solution, by solution spraying cleaned
Cuprio at the bottom of on, drying can obtain Nano-meter SiO_22Super-hydrophobic coat, surface topography is as it is shown in figure 1, Nano-meter SiO_22
Super-hydrophobic coat is uniformly covered in substrate, is mutually intertwined between chain and chain, constitutes nano-void knot
Structure, Nano-meter SiO_22The particle diameter of granule is between 50～150nm, and condensation and dewfall is as in figure 2 it is shown, drop forming core
Rate is 2.02 × 109Individual/m2。
The preparation of embodiment 2 substrate of glass spread coating adds glass microballoon granule hydridization super-hydrophobic coat
Under 30 DEG C of water bath condition, 80 parts of dehydrated alcohol, 5 parts of ammonia, 7 parts of deionized waters are joined reactor
In, it is stirred with the speed of 1500r/min, is added dropwise over the chain type Nano-meter SiO_2 of 3 parts2Colloidal sol, stirring
After 30min；1 part of tetraethyl orthosilicate is added dropwise in solution, reacts 30min；By 3 parts of silicon fluorides
It is added drop-wise in solution, stirs 54h, it is thus achieved that super-hydrophobic coat solution, 0.3 part of glass microballoon (10 μm) is surpassed
Hydrophilic particle joins in the super-hydrophobic coat solution prepared, and continues stirring more than 1h until mixed solution
Dispersed, brush in cleaned substrate of glass, obtain addition glass microballoon granule hydridization after drying super thin
Water coating, water droplet Static Contact thereon is as it is shown on figure 3, contact angle is 159.2 °.
The preparation of embodiment 3 micrometre array silicon base spin-coating method adds dispersed nano SiO2Granule hydridization super-hydrophobic coat
Under 35 DEG C of water bath condition, 60 parts of dehydrated alcohol, 3 parts of ammonia, 10 parts of deionized waters are joined reaction
In still, it is stirred with the speed of 1500r/min, is added dropwise over the chain type Nano-meter SiO_2 of 5 parts2Colloidal sol, stirring
After 30min；1.5 parts of tetraethyl orthosilicates are added dropwise in solution, react 45min；Finally by 5 parts
Silicon fluoride is added drop-wise in solution, stirs 64h, it is thus achieved that super-hydrophobic coat solution, by 5 parts of dispersed nano SiO2
Granule joins in the super-hydrophobic coat solution prepared, and continues stirring more than 1h until mixed solution uniformly divides
Dissipate, be spin-coated in cleaned micrometre array silicon base, obtain after drying and add dispersed nano SiO2Granule
Hydridization super-hydrophobic coat, in its water droplet Static Contact thereon as shown in Figure 4, contact angle is water droplet
158.9°。
Infusion process preparation at the bottom of embodiment 4 polyurethane-base adds silicon powder granule hydridization super-hydrophobic coat
Under 40 DEG C of water bath condition, 100 parts of dehydrated alcohol, 3 parts of ammonia, 8 parts of deionized waters are joined reaction
In still, it is stirred with the speed of 1500r/min, is added dropwise over the ball Nano-meter SiO_2 of 2 parts2Colloidal sol, stirring
After 30min；2 parts of tetraethyl orthosilicates are added dropwise in solution, react 60min；Finally by 4 parts of fluorine
Silane is added drop-wise in solution, stirs 36h, it is thus achieved that super-hydrophobic coat solution, is joined by 5 parts of silicon powder granules
In the super-hydrophobic coat solution prepared, continuation stirring more than 1h, until mixed solution is dispersed, will clean
Good polyurethane immerses in solution, and taking-up dries up, and circulates 3 times, obtains and add silicon powder granule hydridization after drying
Super-hydrophobic coat, surface topography as it is shown in figure 5, coating uniform be distributed in substrate surface, silicon powder granule
Particle diameter between 10～25 μm, Nano-meter SiO_22Reunite together.
Spraying process preparation at the bottom of embodiment 5 cuprio adds dispersed nano SiO2Granule hydridization super-hydrophobic coat
Under 20 DEG C of water bath condition, 50 parts of dehydrated alcohol, 1 part of ammonia, 5 parts of deionized waters are joined reactor
In, it is stirred with the speed of 1500r/min, is added dropwise over the chain type formula Nano-meter SiO_2 of 0.5 part2Colloidal sol, stirs
After mixing 30min；0.5 part of tetraethyl orthosilicate is added dropwise in solution, reacts 10min；Finally by 2
Part silicon fluoride is added drop-wise in solution, stirs 24h, it is thus achieved that super-hydrophobic coat solution, by 1 part of dispersed nano SiO2
Granule joins in the super-hydrophobic coat solution prepared, and continues stirring more than 1h until mixed solution uniformly divides
Dissipate, be sprayed at the bottom of cleaned cuprio, obtain after drying and add dispersed nano SiO2Surpassing of granule hydridization
Hydrophobic coating, surface topography low power as shown in Figure 6, the covering of coating uniform in substrate, SiO2Nano chain with
Nanosphere has been reunited together, it is difficult to differentiate.
Spraying process preparation at the bottom of embodiment 6 cuprio adds silicon powder granule hydridization super-hydrophobic coat
Under 20 DEG C of water bath condition, 50 parts of dehydrated alcohol, 1 part of ammonia, 5 parts of deionized waters are joined reactor
In, it is stirred with the speed of 1500r/min, is added dropwise over the chain type formula Nano-meter SiO_2 of 0.5 part2Colloidal sol, stirs
After mixing 30min；0.5 part of tetraethyl orthosilicate is added dropwise in solution, reacts 10min；Finally by 2
Part silicon fluoride is added drop-wise in solution, stirs 24h, it is thus achieved that super-hydrophobic coat solution, is added by 1 part of silicon powder granule
Entering in the super-hydrophobic coat solution prepared, continuation stirring more than 1h, until mixed solution is dispersed, sprays
It is coated at the bottom of cleaned cuprio, after drying, obtains the super-hydrophobic coat adding silicon powder granule hydridization, surface shape
Shown in looks Fig. 7.
Claims (9)
1. the super-hydrophobic coat of a super hydrophilic granule hydridization, it is characterised in that to Nano-meter SiO_22Colloidal sol is carried out
Silicon fluoride is modified, it is thus achieved that super-hydrophobic coat spray solution, by the single dispersing ball Nano-meter SiO_2 of Superhydrophilic2Molten
Liquid, silicon powder, any one or more mixture of glass microballoon join in super-hydrophobic coat spray solution,
Stir, be sprayed on the substrate of cleaning, after solidification, obtain the super-hydrophobic coat of super hydrophilic granule hydridization；Super
Hydrophilic particle is Nano-meter SiO_2 in super-hydrophobic coat20.1～1 times of colloidal sol quality.
The super-hydrophobic coat of super hydrophilic granule hydridization the most as claimed in claim 1, it is characterised in that substrate
Including in copper sheet, nickel sheet, aluminium flake, stainless steel substrates, glass, pottery, polypropylene, polyethylene, polyurethane
Any one.
The super-hydrophobic coat of super hydrophilic granule hydridization the most as claimed in claim 1, it is characterised in that substrate
Shape includes flat surface, curved surface or compromise face.
The super-hydrophobic coat of super hydrophilic granule hydridization the most as claimed in claim 1, it is characterised in that described
Super-hydrophobic coat spray solution be under 20～40 DEG C of water bath condition, by 50～100 mass parts dehydrated alcohol,
1～5 mass parts ammonia, 5～10 mass parts deionized water join in reactor, stirring, be added dropwise over 0.5～
The Nano-meter SiO_2 of 5 mass parts2Colloidal sol, after stirring；0.5～2 mass parts tetraethyl orthosilicates are dropwise added
Entering in solution, reaction is fully；Finally being added drop-wise in solution by 2～5 mass parts silicon fluorides, stirring reaction obtains
?.
The super-hydrophobic coat of super hydrophilic granule hydridization the most as claimed in claim 4, it is characterised in that described
Nano-meter SiO_22Colloidal sol pattern is single dispersing chain type, single dispersing ball.
The super-hydrophobic coat of super hydrophilic granule hydridization the most as claimed in claim 1, it is characterised in that described
The particle diameter of Superhydrophilic granule be single dispersing ball SiO2Granule is 100nm～10 μm, the grain of other microgranules
Footpath is 10～60 μm.
The super-hydrophobic coat of super hydrophilic granule hydridization the most as claimed in claim 1, it is characterised in that described
Nano-meter SiO_22Aerosol particle size is between 10～100nm.
8. the method for the super-hydrophobic coat of the arbitrary described super hydrophilic granule hydridization of preparation claim 1～6, its
Being characterised by, described method comprises the following steps:
(1) preparation of super-hydrophobic coat solution:
Under 20～40 DEG C of water bath condition, by 50～100 mass parts dehydrated alcohol, 1～5 mass parts ammonia, 5～
10 mass parts deionized waters join in reactor, stirring, are added dropwise over the Nano-meter SiO_2 of 0.5～5 mass parts2
Colloidal sol, after stirring；Being added dropwise in solution by 0.5～2 mass parts tetraethyl orthosilicates, reaction is filled
Point；Finally 2～5 mass parts silicon fluorides are added drop-wise in solution, stirring reaction, it is thus achieved that super-hydrophobic coat solution；
(2) preparation of the super-hydrophobic coat solution of super hydrophilic granule hydridization, joins system by Superhydrophilic granule
In the super-hydrophobic coat solution got ready, continue stirring until mixed solution is dispersed；
(3) preparation of the super-hydrophobic coat of super hydrophilic granule hydridization: use spraying, brushing, dip-coating, spin coating
In any one, the super-hydrophobic coat solution of super hydrophilic granule hydridization is coated to clean substrate surface, dries in the air
The super-hydrophobic coat of super hydrophilic granule hydridization is i.e. obtained after Gan.
9. the method preparing the super-hydrophobic coat of super hydrophilic granule hydridization as claimed in claim 7, its feature
It is, when substrate is metal substrate successively with 800#, 1000#, 1500# sand papering, mechanically polishes,
The most successively with acetone, dehydrated alcohol and deionized water ultrasonic cleaning, cold wind dries up the substrate obtaining cleaning.
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| CN111005231B (en) * | 2019-11-20 | 2022-08-26 | 上海工程技术大学 | Preparation method of durable photocatalytic self-repairing super-amphiphobic ultraviolet-proof textile |
| CN111138978B (en) * | 2019-11-29 | 2021-09-28 | 西安建筑科技大学 | Super-amphiphobic coating, preparation method thereof and surface wettability conversion method |
| CN111138978A (en) * | 2019-11-29 | 2020-05-12 | 西安建筑科技大学 | Super-amphiphobic coating, preparation method thereof and surface wettability conversion method |
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| CN113105263A (en) * | 2021-04-09 | 2021-07-13 | 电子科技大学 | Preparation method of super-hydrophobic surface with nanoscale hydrophilic sites |
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