CN105969174A - Super-hydrophobic material and preparation method thereof - Google Patents
Super-hydrophobic material and preparation method thereof Download PDFInfo
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- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
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- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
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- 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
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Abstract
The invention discloses a super-hydrophobic material which comprises a base and a coating, wherein the coating comprises the following components in parts by mass: 10-30 parts of resin and 2-16 parts of nanoparticles; and the nanoparticles with particle size of 10-100nm account for 5-48% by mass. According to the invention, the mass percentage of the 10-150nm nanoparticles in the inorganic nanoparticles is controlled within a specific range; and after repeated icing and deicing cycles of the prepared super-hydrophobic material, the contact angle still can be kept at 150 degrees or above, and the hydrophobicity and the holding ability are very high; and meanwhile, in the super-hydrophobic material disclosed by the invention, the time of water drops icing on the surface can be prolonged and kept at 190s or above, the shear strength of ice cubes on the surface is kept at 210kPa or below, and good anti-icing and ice opening effects are achieved.
Description
Technical field
The present invention relates to a kind of super hydrophobic material and preparation method thereof, be specifically related to a kind of after the deicing circulation that repeatedly freezes still
Can by contact angle super hydrophobic material being maintained at more than 150 ° and preparation method thereof.
Background technology
Water, ice are in the attachment of aircraft surfaces and accumulation, it will change the air-flow on the weight of fuselage and wing, reduce lift
And increase resistance, the flight safety of aircraft is caused harm greatly；It is thus typically necessary to use the material that hydrophobicity is high
Manufacture fuselage and the wing of aircraft, prevent the attachment on its surface of water, ice and accumulation as far as possible such that it is able to preferably ensure and fly
Row safety.
The height of material hydrophobic, is generally evaluated by the contact angle size of material surface with water droplet, and contact angle is the biggest,
Show that the hydrophobicity of material is the highest；Particularly, when contact angle is more than 150 °, then show that material has the hydrophobicity of superelevation,
The attachment on its surface of water, ice and accumulation can be more efficiently prevented from, and this material is also referred to as super hydrophobic material.
As: a kind of material being made up of substrate and modified membrane (i.e. coating) disclosed in Chinese patent CN 101704410 A,
It is by arranging vertical columnar arrays structure and using 10～50 nano-particle to form modified membrane in substrate so that prepared
The contact angle of material surface and water can there is the hydrophobicity of superelevation more than 150 °, belong to the category of super hydrophobic material.
But, the present invention studies the contact angle of discovery, above-mentioned super hydrophobic material and water, although can be more than the when of initial
150 °, but after the deicing circulation that repeatedly freezes, its contact angle will soon be less than 150 °, such as: remove through 20 icings
After ice circulation, its contact angle has reduced to 128 °, and now the hydrophobicity of material substantially deteriorates, it means that, material is prevented
Sealing, ice are substantially deteriorated in the ability of its surface attachment and accumulation.
In order to overcome the existing super hydrophobic material defect that its hydrophobicity substantially deteriorates after the deicing circulation that repeatedly freezes, this area
Need invention one badly to remain to keep the hydrophobic super hydrophobic material of superelevation after the deicing circulation that repeatedly freezes.
Summary of the invention
It is an object of the invention to provide a kind of remaining to after the deicing that repeatedly freezes circulates keeps superelevation hydrophobic super-hydrophobic
Material.
A kind of super hydrophobic material that the present invention provides, it includes substrate and coating, and wherein, described coating includes following weight portion
The component of number: resin 10 parts～30 parts, nano-particle 2 parts～16 parts；In described nano-particle, particle diameter is 10 to receive
The mass fraction of rice～100 nanometers is 5%～48%.
Further, described coating is made up of the component of following parts by weight: resin 10 parts～30 parts, nano-particle 2
Part～16 parts；In described nano-particle, particle diameter be the mass fraction of 10 nanometers～100 nanometers be 5%～48%.
The present invention by technology such as common plasma, photetchings, can easily at the surface configuration pit of substrate, and
The shape of cross section of pit, both can be easily positioned to irregular shape, it is also possible to be easily positioned to hexagon, rectangular
Shape, triangle, circle, oval isotactic shape, can also adjust easily simultaneously the sectional area of pit, the degree of depth and
Width between pit.
Further, the surface configuration of described substrate has pit, and the sectional area of pit is 200 square microns～6000 squares
The degree of depth of micron pit is 2 microns～20 microns, and the width between pit is 3 microns～20 microns.
Further, described substrate is metal material, alloy material, plastics, rubber or inorganic ceramic material；Preferably,
Described substrate is metal material or alloy material.
Further, the average thickness of described coating is more than or equal to 0.5 micron；Preferably, the average thickness of described coating
It it is 0.8 micron～500 microns.
Further, described resin is selected from organic siliconresin or fluorocarbon resin；Wherein, described organic siliconresin is selected from second
Thiazolinyl end-blocking dimethyl siloxane, polyphenyl methyl siloxane or trifluompropyl methyl polysiloxane in any one or two
More than Zhong；Described fluorocarbon resin is in Kynoar, politef, perfluoro methyl vinyl ether, hexafluoropropene
Any one or two or more；
Preferably,
In described organic siliconresin, the mass fraction of the dimethyl siloxane of ethenyl blocking is 30%～50%；Described
In fluorocarbon resin, the mass fraction of Kynoar is 30%～50%.
Further, described nano-particle is selected from activated carbon nano-particle, titania nanoparticles, cerium dioxide nano
Any one or two kinds in granule, nano SiO 2 particle, Zinc oxide nanoparticle, polytetrafluorethylenano nano granule with
On；Described particle diameter be the mass fraction of the nano-particle of 10 nanometers～100 nanometers be 30%～48%.
Further, described nano-particle is made up of the component of following parts by weight:
The activated carbon nano-particle 40 of the activated carbon nano-particle of 10 nanometers～50 nanometers 35 parts, 300 nanometers～400 nanometers
Part and 100 nanometers～the cerium oxide nanoparticles 25 parts of 300 nanometers；
Or,
The titania nanoparticles of 10 nanometers～50 nanometers 40 parts, 200 nanometers～the nano titania of 300 nanometers
Grain 40 parts and the activated carbon nano-particle 20 parts of 100 nanometers～300 nanometers；
Or,
The nano SiO 2 particle of 50 nanometers～100 nanometers 35 parts, 400 nanometers～the silica nanometer of 500 nanometers
Grain 35 parts and the titania nanoparticles 30 parts of 100 nanometers～300 nanometers；
Or,
The activated carbon nano-particle 32 of the activated carbon nano-particle of 10 nanometers～50 nanometers 32 parts, 300 nanometers～400 nanometers
Part and 100 nanometers～the titania nanoparticles 36 parts of 200 nanometers；
Or,
The titania nanoparticles of 10 nanometers～50 nanometers 48 parts and the activated carbon nano-particle of 250 nanometers～350 nanometers
52 parts.
In the present invention, " a nanometer～b nanometer " represents that particle diameter is less than or equal to b nanometer more than a nanometer, and such as, " 50 receive
Rice～100 nanometers " refer to that particle diameter is more than 50 nanometers and is less than or equal to 100 nanometers.
Present invention also offers a kind of method preparing above-mentioned super hydrophobic material, comprise the following steps:
1., using plasma technology or photetching technology, at the surface configuration pit of substrate；
2., use dipping method, electroblowing process or spraying method, the dimpled substrate in surface is formed coating, obtains super
Hydrophobic material.
Further, step 1. in, the condition of described plasma technique is: working gas is in argon, the carbon tetrafluoride
Any one or two kinds, operating temperature is 20 DEG C～30 DEG C, and reaction pressure is 55Pa～65Pa, radio-frequency power be 280W～
600W。
The present invention is by controlling the nano-particle of 10 nanometers～50 nanometers mass fraction in inorganic nanoparticles specific
In the range of, prepared super hydrophobic material, after the deicing circulation that repeatedly freezes, remain able to be maintained at contact angle
More than 150 °, there is hydrophobicity and the holding capacity of superelevation；Meanwhile, the super hydrophobic material of the present invention, additionally it is possible to by water
The time lengthening dropping in surface icing is maintained at more than 190s, and the ice cube shear strength on surface is maintained at below 210kPa,
There is good ice effect anti-icing, thin；And, preparation method is easy, and energy consumption is low, and production efficiency is high, low cost, economical
It is worth substantially, there is the best industrialization prospect.
Obviously, according to the foregoing of the present invention, according to ordinary technical knowledge and the customary means of this area, without departing from this
Invent under above-mentioned basic fundamental thought premise, it is also possible to make the amendment of other various ways, replace or change.
The detailed description of the invention of form by the following examples, is described in further detail the foregoing of the present invention again.
But this should not being interpreted as, the scope of the above-mentioned theme of the present invention is only limitted to Examples below.All real based on foregoing of the present invention institute
Existing technology belongs to the scope of the present invention.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that in the embodiment of the present invention 1, cellular hollow closes hydrophobic structure.
Fig. 2 is the scanning electron microscope (SEM) photograph that in the embodiment of the present invention 1, cellular hollow closes hydrophobic structure.
Fig. 3 is the profile of the super hydrophobic surface prepared by the embodiment of the present invention 2.
Fig. 4 is the schematic diagram of rectangular hollow hydrophobic structure in the embodiment of the present invention 3.
Fig. 5 is the scanning electron microscope (SEM) photograph of rectangular hollow hydrophobic structure in the embodiment of the present invention 3.
Fig. 6 is the scanning electron microscope (SEM) photograph of the hollow hydrophobic structure of the embodiment of the present invention 4 intermediate cam shape.
Fig. 7 is the scanning electron microscope (SEM) photograph of hollow hydrophobic structure trapezoidal in the embodiment of the present invention 5.
Detailed description of the invention
The raw material, the equipment that use in the specific embodiment of the invention are known product, obtain by buying commercially available prod.
Organic siliconresin: the dimethyl siloxane (CAS No.68083-19-2) of ethenyl blocking, polyphenyl methyl silica
Alkane (CAS No.9005-12-3), trifluompropyl methyl polysiloxane (CAS No.63148-56-1)；
Fluorocarbon resin: Kynoar (CAS No.24937-79-9), politef (CAS No.9002-84-0),
Perfluoro methyl vinyl ether (CAS No.1187-93-5), hexafluoropropene (CAS No.116-15-4).
Embodiment 1
Super hydrophobic surface I, with metal aluminum alloy as substrate, utilizes 360 mesh sand paper to polish them at least 5 times, then will
It is placed in ultrasound bath and is carried out.Thereafter, its surface is carried out by the nitric acid utilizing 0.05mol/L.Complete above-mentioned
After operation, with argon as plasma, at 20 DEG C, reaction pressure 65Pa, under radio-frequency power 280W, to aluminum flake surface
Processing, preparation has cellular hollow and closes hydrophobic structure (schematic diagram is shown in that Fig. 1, scanning electron microscope (SEM) photograph are shown in Fig. 2), knot
Fruit display, the cross section of this pit is hexagon, hexagonal length of side V1=20.93 micron, the width H1=8.374 between pit
Micron, H2=6.420 micron.Then this aluminium flake is vertically immersed containing nanometer by this metal aluminium flake with the speed of 0.05mm/s
In the hydrophobic thin ice coating solution of grain, until aluminium flake is completely immersed in solution.After aluminium flake is completely immersed in solution, should be complete by it
Leaching at least 5 minutes in the solution.Whole dipping process, reaction temperature should maintain 70 DEG C-90 DEG C, meanwhile, should utilize electricity
Dynamic blender maintains solution to be in suspension state all the time.Repeat above-mentioned dipping process at least 3 times, to ensure containing nano-particle
Hydrophobic thin ice coating uniform be coated in substrate surface (note: infusion process is that the one often used in chemical is to the surface of solids
The method carrying out coating), average thickness is 1 micron.This hydrophobic thin ice coating is by organic siliconresin, nano-particle and organic
Solvent mixes.Wherein, organic siliconresin be by the dimethyl siloxane of ethenyl blocking, polyphenyl methyl siloxane and
Trifluompropyl methyl polysiloxane 1:1:1 in mass ratio composition mixture, nano-particle be by mass fraction be 35%
Grain size be the activated carbon granule of 10-50 nanometer, mass fraction be the activated carbon that granular size is 300-400 nanometer of 40%
Granule, mass fraction are the cerium oxide particles that granular size the is 100-300 nanometer composition of 25%, and organic solvent is toluene.
Wherein, this coating organic siliconresin is 18 weight portions, and nano-particle is 14 weight portions, and organic solvent is 68 weight portions.
After completing aforesaid operations, the super hydrophobic surface being coated with hydrophobic thin ice coating is placed in baking oven, dries in 120 DEG C of baking ovens
2.5 hour.
For comparing, it is prepared for super hydrophobic surface II: this surface is equally with metal aluminum alloy as substrate, also with above-mentioned
Plasma technology has cellular hollow in the preparation of its surface and closes hydrophobic structure.Then receive utilizing above-mentioned infusion process to contain
The hydrophobic thin ice coating of rice grain is coated in substrate surface.This hydrophobic thin ice coating is by organic siliconresin, nano-particle and organic
Solvent mixes.Wherein, organic siliconresin be by the dimethyl siloxane of ethenyl blocking, polyphenyl methyl siloxane and
Trifluompropyl methyl polysiloxane 1:1:1 in mass ratio composition mixture, nano-particle be granular size be 10-50 nanometer
Cerium oxide particles, organic solvent is toluene.Wherein, this coating organic siliconresin is 16 weight portions, and nano-particle is 12
Weight portion, organic solvent is 72 weight portions.After completing aforesaid operations, it is coated with the super hydrophobic surface of hydrophobic thin ice coating
It is placed in baking oven, dries 2.5 hours in 120 DEG C of baking ovens.
For comparing, it is prepared for super hydrophobic surface III: this surface is with metal aluminum alloy as substrate, according to Chinese patent CN
101704410A " preparation method of a kind of nano superhydrophobic surface for airplane antifreezing and deicing " is described prepares post on its surface
Shape hydrophobic structure.Then will utilize above-mentioned infusion process that the hydrophobic thin ice coating containing nano-particle is coated in substrate surface, this is dredged
Water is dredged ice coating and is mixed by organic siliconresin, nano-particle and organic solvent.Wherein, organic siliconresin is by vinyl
Dimethyl siloxane, polyphenyl methyl siloxane and the trifluompropyl methyl polysiloxane 1:1:1 in mass ratio composition of end-blocking
Mixture, nano-particle be granular size be the titanium dioxide granule of 10-50 nanometer, organic solvent is toluene.Wherein, should
Coating organic siliconresin is 16 weight portions, and nano-particle is 16 weight portions, and organic solvent is 68 weight portions.Complete above-mentioned
After operation, the super hydrophobic surface being coated with hydrophobic thin ice coating is placed in baking oven, dries 2.5 hours in 120 DEG C of baking ovens.
The performance test results of above-mentioned three kinds of super hydrophobic surfaces, is shown in Table 1.
The performance test results of three kinds of different super hydrophobic surfaces in table 1, embodiment 1
Wherein,
Surface of solids contact angle and contact angle hysteresis may utilize contact angle measurement and measure.
Water droplet is carried out as follows in the mensuration of surface freezing time: 0.05mL drop is placed in super hydrophobic surface, then
By in-10 DEG C of environmental cabinets of its dislocation, starting timing and also carry out real-time monitored, water droplet required time that freezes completely is water droplet and exists
In-10 DEG C of environment, the prolongation time frozen on surface.
The ice cube shear strength test on surface is according to paper " Ice adhesion on super-hydrophobic surface " S.A.
Kulinich, M.Farzaneh, Appl.Surf.Sci.2009,255:8153 8157 or " Highly resistant icephobic
coatings on aluminum alloys"R.Menini,Z.Ghalmi,M.Farzaneh,Cold Regions Science and
Technology, the method described by 2011,65 (1): 65-69 is carried out.
Once icing deicing circulation refers to that 0.05mL drop, after super hydrophobic surface freezes completely, utilizes centrifuge turning at a high speed
Under conditions of Dong, it is removed from surface, then aluminium flake is placed in 30 DEG C of calorstats, remove the moisture of remained on surface.
Illustrate:
(1) water droplet is the biggest at the contact angle on surface, illustrates that the hydrophobic performance on surface is the best: when contact angle is more than 150 °,
For super hydrophobic surface, drop is difficult in surface adhesion, and its disturbance just can make it depart from gently from surface；
(2) numerical value that water droplet extends at surface freezing time is the biggest, shows that anti-icing effect is the best；
(3) ice cube is the least at the shear strength numerical value on surface, and showing to freeze the most easily removes, and i.e. dredges ice effective；
(4), after repeatedly icing deicing circulates, the water droplet contact angle on surface reduces the smaller the better, and on surface, freezing time prolongs
Long numerical value loss is the smaller the better, and it is the smaller the better that the ice cube shear strength numerical value on surface increases, and shows that its abrasion resistance is good.
The above results shows, the present invention is by by the nano-particle of 10 nanometers～50 nanometers quality in inorganic nanoparticles
Fractional domination 35%, prepared super hydrophobic material, through 20 times, 50 icing deicing circulation after, remain able to
Contact angle is maintained at more than 150 °, there is hydrophobicity and the holding capacity of superelevation；Simultaneously, additionally it is possible to by water droplet at table
The time lengthening that face freezes is maintained at more than 190s, the ice cube shear strength on surface is maintained at below 210kPa, has
Good ice effect anti-icing, thin.
Embodiment 2
With metal aluminum alloy as substrate, utilize 360 mesh sand paper that it is polished at least 5 times, then be placed on ultrasound wave water
Bath is carried out.Thereafter, its surface is carried out by the nitric acid utilizing 0.05mol/L.After completing aforesaid operations, with 75%
Argon and the CF of 25%4For working gas, at 30 DEG C, reaction pressure 55Pa, under radio-frequency power 600W, to aluminum
Sheet surface processes, and preparation has cellular hollow and closes hydrophobic structure.Then by this metal aluminium flake with 0.05mm/s
Speed vertically by this aluminium flake immerse containing nano-particle hydrophobic thin ice coating solution in, until aluminium flake is completely immersed in solution.
After aluminium flake is completely immersed in solution, it should be soaked at least 5 minutes in the solution entirely.Whole dipping process, reaction temperature should be tieed up
Hold at 70 DEG C-90 DEG C, meanwhile, electric blender should be utilized to maintain solution to be in suspension state all the time.Repeat above-mentioned dipping
Journey at least 3 times, to ensure that the hydrophobic thin ice coating uniform containing nano-particle is coated in substrate surface, average thickness 1 micron.
This hydrophobic thin ice coating is mixed by organic siliconresin, nano-particle and organic solvent.Wherein, organic siliconresin is
The mixture being made up of with trifluompropyl methyl polysiloxane 1:1 in mass ratio the dimethyl siloxane of ethenyl blocking, nanometer
Granule be mass fraction be the granular size of 40% be the titania nanoparticles of 10-50 nanometer, mass fraction be 40%
Granular size is the titania nanoparticles of 200-300 nanometer and granular size that mass fraction is 20% is that 100-300 receives
The activated carbon granule composition of rice, organic solvent is toluene.Wherein, this coating organic siliconresin is 15 weight portions, nanometer
Grain content is 10 weight portions, and organic solvent is 75 weight portions.After completing aforesaid operations, it is coated with hydrophobic thin ice coating
Super hydrophobic surface is placed in baking oven, dries 3 hours in 120 DEG C of baking ovens.After completing preparation, the profile on this surface such as figure
Shown in 3；The performance test results, is shown in Table 2.
Embodiment 3
With metal aluminum alloy as substrate, with argon as working gas, at 20 DEG C, reaction pressure 65Pa, radio-frequency power 300W
Under, aluminum flake surface is processed, (schematic diagram is shown in that Fig. 4, scanning electron microscope (SEM) photograph are shown in the hollow hydrophobic structure that preparation is rectangle
Fig. 5), the cross section of this pit is rectangle, rectangular long V3=31.82 micron, wide H1=16.47 micron, pit it
Between width V1=8.932 micron, V2=5.862 micron.Then this metal aluminium flake vertically should with the speed of 0.05mm/s
Aluminium flake immerses in the hydrophobic thin ice coating solution containing nano-particle, until aluminium flake is completely immersed in solution.Treat that aluminium flake is completely immersed in
After solution, it should be soaked at least 5 minutes in the solution entirely.Whole dipping process, reaction temperature should maintain 65 DEG C-95 DEG C, with
Time, electric blender should be utilized to maintain solution to be in suspension state all the time.Repeat above-mentioned dipping process at least 3 times, to protect
The card hydrophobic thin ice coating uniform containing nano-particle is coated in aluminum flake surface, average thickness 1 micron.
This hydrophobic thin ice coating is mixed by fluorocarbon resin, nano-particle and organic solvent.Wherein, fluorocarbon resin is by gathering
The mixture of vinylidene and hexafluoropropene 1:1 in mass ratio composition, nano-particle be mass fraction be the granular size of 35%
For the titanium dioxide that granular size is 400-500 nanometer that the nano SiO 2 particle of 50-100 nanometer, mass fraction are 35%
Nano silicon particles and the titanium dioxide granule that granular size the is 100-300 nanometer composition that mass fraction is 30%, organic solvent
For petroleum ether.Wherein, this coating organic siliconresin is 12 weight portions, and nano-particle content is 10 weight portions, organic solvent
It is 78 weight portions.After completing aforesaid operations, the super hydrophobic surface being coated with hydrophobic thin ice coating is placed in baking oven, at 90 DEG C
Baking oven is dried 3.5 hours；The performance test results of its super hydrophobic surface, is shown in Table 2.
Embodiment 4
With metal aluminum alloy as substrate, the argon with 60% and the CF of 40%4For working gas, at 25 DEG C, reaction pressure
60Pa, under radio-frequency power 600W, processes aluminum flake surface, prepares hollow hydrophobic structure (scanning electricity triangular in shape
Mirror figure is shown in Fig. 6), the cross section of this pit is triangle, the length of side V1=49.76 micron of triangle, the width between pit
H1=8.613 micron, H2=5.742 micron.Then this aluminium flake is vertically immersed by this metal aluminium flake with the speed of 0.05mm/s
In hydrophobic thin ice coating solution containing nano-particle, until aluminium flake is completely immersed in solution.After aluminium flake is completely immersed in solution,
It should be soaked at least 5 minutes in the solution entirely.Whole dipping process, reaction temperature should maintain 70 DEG C-90 DEG C, meanwhile, should
Electric blender is utilized to maintain solution to be in suspension state all the time.Repeat above-mentioned dipping process at least 3 times, to ensure containing receiving
The hydrophobic thin ice coating uniform of rice grain is coated in substrate surface, average thickness 1 micron.
This hydrophobic thin ice coating is mixed by fluorocarbon resin, nano-particle and organic solvent.Wherein, fluorocarbon resin is by gathering
The mixture of vinylidene, perfluoro methyl vinyl ether, hexafluoropropene 1:1:1 in mass ratio composition, nano-particle is quality
Mark be 32% the activated carbon nano-particle that granular size is 10-50 nanometer, mass fraction be 32% granular size be
The activated carbon nano-particle of 300-400 nanometer and the titanium dioxide that granular size is 100-200 nanometer that mass fraction is 36%
Granule forms, and organic solvent is petroleum ether.Wherein, this coating organic siliconresin is 12 weight portions, and nano-particle content is 8
Weight portion, organic solvent is 80 weight portions.After completing aforesaid operations, it is coated with the super hydrophobic surface of hydrophobic thin ice coating
It is placed in baking oven, dries 4 hours in 85 DEG C of baking ovens；The performance test results of its super hydrophobic surface, is shown in Table 2.
Embodiment 5
With metal aluminum alloy as substrate, utilize 360 mesh sand paper that it is polished at least 5 times, then be placed on ultrasound wave water
Bath is carried out.Thereafter, its surface is carried out by the nitric acid utilizing 0.05mol/L.After completing aforesaid operations, with argon
For plasma, at 20 DEG C, reaction pressure 65Pa, under radio-frequency power 280W, aluminum flake surface is processed, preparation
Trapezoidal hollow hydrophobic structure (scanning electron microscope (SEM) photograph is shown in Fig. 7), the long V1=24.22 in the end that the cross section of this pit is trapezoidal, trapezoidal
Micron, V2=15.14 micron, high H1=25.88 micron, the width H2=6.331 micron between pit, H3=8.534 are micro-
Rice.Then the hydrophobic thin ice coating vertically immersed this aluminium flake containing nano-particle with the speed of 0.05mm/s by this metal aluminium flake is molten
In liquid, until aluminium flake is completely immersed in solution.After aluminium flake is completely immersed in solution, it should be soaked at least 5 points in the solution entirely
Clock.Whole dipping process, reaction temperature should maintain 70 DEG C-90 DEG C, meanwhile, electric blender should be utilized to maintain solution all the time
It is in suspension state.Repeat above-mentioned dipping process at least 3 times, to ensure that the hydrophobic thin ice coating uniform containing nano-particle is coated with
Overlay on substrate surface, average thickness 1 micron.
This hydrophobic thin ice coating solution is mixed by organic siliconresin, nano-particle and organic solvent.Wherein, organosilicon tree
The mixture that fat is made up of with polyphenyl methyl siloxane 1:1 in mass ratio the dimethyl siloxane of ethenyl blocking, nanometer
Granule be mass fraction be 48% the titania nanoparticles that granular size is 10-50 nanometer and mass fraction be 52%
Granular size is the activated carbon granule composition of 250-350 nanometer, and organic solvent is petroleum ether.Wherein, this coating organosilicon tree
Fat is 13 weight portions, and nano-particle content is 11 weight portions, and organic solvent is 76 weight portions.After completing aforesaid operations, will
The super hydrophobic surface being coated with hydrophobic thin ice coating is placed in baking oven, dries 2.5 hours in 100 DEG C of baking ovens；It is super-hydrophobic
The performance test results on surface, is shown in Table 2.
Table 2, the performance test results of the embodiment of the present invention 2～5 super hydrophobic surface
In sum, the present invention is by dividing the nano-particle of 10 nanometers～50 nanometers quality in inorganic nanoparticles
Numerical control system in the range of specific, prepared super hydrophobic material, after the deicing circulation that repeatedly freezes, remain able to by
Contact angle is maintained at more than 150 °, has hydrophobicity and the holding capacity of superelevation；Simultaneously, additionally it is possible to by water droplet on surface
The time lengthening frozen is maintained at more than 190s, the ice cube shear strength on surface is maintained at below 210kPa, has good
Good ice effect anti-icing, thin；And, the preparation method of super hydrophobic material of the present invention is easy, and energy consumption is low, and production efficiency is high,
Low cost, economic worth is obvious, has the best industrialization prospect.
Claims (10)
1. a super hydrophobic material, it is characterised in that: it includes substrate and coating, and wherein, described coating includes following heavy
The component of amount number: resin 10 parts～30 parts, nano-particle 2 parts～16 parts；In described nano-particle, particle diameter is
The mass fraction of 10 nanometers～100 nanometers is 5%～48%.
Super hydrophobic material the most according to claim 1, it is characterised in that: described coating is by following parts by weight
Component forms: resin 10 parts～30 parts, nano-particle 2 parts～16 parts；In described nano-particle, particle diameter is 10 to receive
The mass fraction of rice～100 nanometers is 5%～48%.
Super hydrophobic material the most according to claim 1 and 2, it is characterised in that: the surface configuration of described substrate has recessed
Hole, the sectional area of pit is 200 square microns～6000 square microns, and the degree of depth of pit is 2 microns～20 microns, recessed
Width between hole is 3 microns～20 microns.
Super hydrophobic material the most according to claim 1 and 2, it is characterised in that: described substrate is metal material, conjunction
Gold copper-base alloy, plastics, rubber or inorganic ceramic material；Preferably, described substrate is metal material or alloy material.
Super hydrophobic material the most according to claim 1 and 2, it is characterised in that: the average thickness of described coating is big
In equal to 0.5 micron；Preferably, the average thickness of described coating is 0.8 micron～500 microns.
Super hydrophobic material the most according to claim 1 and 2, it is characterised in that: described resin is selected from organosilicon tree
Fat or fluorocarbon resin；Wherein, described organic siliconresin is selected from the dimethyl siloxane of ethenyl blocking, polyphenyl methyl silicon
In oxygen alkane or trifluompropyl methyl polysiloxane any one or two or more；Described fluorocarbon resin is selected from polyvinylidene fluoride
In alkene, politef, perfluoro methyl vinyl ether, hexafluoropropene any one or two or more；
Preferably,
In described organic siliconresin, the mass fraction of the dimethyl siloxane of ethenyl blocking is 30%～50%；Described
In fluorocarbon resin, the mass fraction of Kynoar is 30%～50%.
Super hydrophobic material the most according to claim 1 and 2, it is characterised in that: described nano-particle is selected from activity
Charcoal nano-particle, titania nanoparticles, cerium oxide nanoparticles, nano SiO 2 particle, zinc-oxide nano
Grain, in polytetrafluorethylenano nano granule any one or two or more；Described particle diameter is receiving of 10 nanometers～100 nanometers
The mass fraction of rice grain is 30%～48%.
Super hydrophobic material the most according to claim 7, it is characterised in that: described nano-particle is by following weight
The component composition of number:
The activated carbon nano-particle 40 of the activated carbon nano-particle of 10 nanometers～50 nanometers 35 parts, 300 nanometers～400 nanometers
Part and 100 nanometers～the cerium oxide nanoparticles 25 parts of 300 nanometers；
Or,
The titania nanoparticles of 10 nanometers～50 nanometers 40 parts, 200 nanometers～the nano titania of 300 nanometers
Grain 40 parts and the activated carbon nano-particle 20 parts of 100 nanometers～300 nanometers；
Or,
The nano SiO 2 particle of 50 nanometers～100 nanometers 35 parts, 400 nanometers～the silica nanometer of 500 nanometers
Grain 35 parts and the titania nanoparticles 30 parts of 100 nanometers～300 nanometers；
Or,
The activated carbon nano-particle 32 of the activated carbon nano-particle of 10 nanometers～50 nanometers 32 parts, 300 nanometers～400 nanometers
Part and 100 nanometers～the titania nanoparticles 36 parts of 200 nanometers；
Or,
The titania nanoparticles of 10 nanometers～50 nanometers 48 parts and the activated carbon nano-particle of 250 nanometers～350 nanometers
52 parts.
9. prepare the method for super hydrophobic material described in claim 1～8 any one for one kind, it is characterised in that: include following
Step:
1., using plasma technology or photetching technology, at the surface configuration pit of substrate；
2., use dipping method, electroblowing process or spraying method, the dimpled substrate in surface is formed coating, obtains super
Hydrophobic material.
Method the most according to claim 9, it is characterised in that: step 1. in, the condition of described plasma technique
For: working gas any one or two kinds in argon, carbon tetrafluoride, operating temperature is 20 DEG C～30 DEG C, reaction
Pressure is 55Pa～65Pa, and radio-frequency power is 280W～600W.
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