CN107803587A - A kind of wind electricity blade super-hydrophobic automatic cleaning surface and preparation method - Google Patents
A kind of wind electricity blade super-hydrophobic automatic cleaning surface and preparation method Download PDFInfo
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- CN107803587A CN107803587A CN201710948316.7A CN201710948316A CN107803587A CN 107803587 A CN107803587 A CN 107803587A CN 201710948316 A CN201710948316 A CN 201710948316A CN 107803587 A CN107803587 A CN 107803587A
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- 230000005611 electricity Effects 0.000 title claims abstract description 60
- 238000004140 cleaning Methods 0.000 title claims abstract description 41
- 230000003075 superhydrophobic effect Effects 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 30
- 239000002105 nanoparticle Substances 0.000 claims abstract description 15
- 239000011347 resin Substances 0.000 claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 230000001939 inductive effect Effects 0.000 claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 8
- 238000010276 construction Methods 0.000 claims abstract description 8
- 238000002679 ablation Methods 0.000 claims abstract description 5
- 238000012545 processing Methods 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 229920000058 polyacrylate Polymers 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000012986 modification Methods 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 3
- POULHZVOKOAJMA-UHFFFAOYSA-M dodecanoate Chemical compound CCCCCCCCCCCC([O-])=O POULHZVOKOAJMA-UHFFFAOYSA-M 0.000 claims description 3
- 229910052731 fluorine Inorganic materials 0.000 claims description 3
- 239000011737 fluorine Substances 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 3
- 229940070765 laurate Drugs 0.000 claims description 3
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical class CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 claims 1
- 238000000576 coating method Methods 0.000 abstract description 20
- 239000011248 coating agent Substances 0.000 abstract description 19
- 239000002086 nanomaterial Substances 0.000 abstract description 6
- 238000011065 in-situ storage Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 239000000463 material Substances 0.000 description 13
- 235000013339 cereals Nutrition 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 241000931526 Acer campestre Species 0.000 description 3
- 238000000861 blow drying Methods 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
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- 241000196324 Embryophyta Species 0.000 description 2
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- 230000000694 effects Effects 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- VBGGLSWSRVDWHB-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-henicosafluorodecyl-tris(trifluoromethoxy)silane Chemical compound FC(F)(F)O[Si](OC(F)(F)F)(OC(F)(F)F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F VBGGLSWSRVDWHB-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- PRPAGESBURMWTI-UHFFFAOYSA-N [C].[F] Chemical compound [C].[F] PRPAGESBURMWTI-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
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- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002389 environmental scanning electron microscopy Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
- 238000013532 laser treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- -1 poly- ammonia Ester Chemical class 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000001338 self-assembly Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
-
- 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
- C09D133/00—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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/06—Rotors
- F03D3/062—Rotors characterised by their construction elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Sustainable Energy (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Development (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Wind Motors (AREA)
Abstract
A kind of wind electricity blade super-hydrophobic automatic cleaning surface and preparation method, belong to wind power equipment manufacturing technology field.Column micron scale construction is densely covered with the wind electricity blade surface resin coating of the present invention, the outer surface of each column micrometer structure forms micro-nano secondary structure covered with a large amount of nano particles；Its preparation method is that column micron scale construction is prepared in ablation in situ directly on blade surface resinous coat using pulse laser, inductive effect based on pulse laser, in the outer surface of each column micrometer structure while inductive formation nano particle, the micro-nano secondary structure of formation micrometer structure plus nano structure.The preparation method of the present invention is simple, and process compatibility is good, designability is strong, it is possible to achieve prepared by large area.Pollution caused by super-hydrophobic automatic cleaning wind electricity blade can effectively reduce vanes wind and weather, reduces icing possibility, improves annual working time, wind energy utilization efficiency and the leaf longevity of Wind turbines, therefore have important application prospect.
Description
Technical field
The present invention relates to a kind of wind electricity blade, more particularly to a kind of super-hydrophobic automatic cleaning surface and preparation method thereof, belong to
Wind power equipment manufacturing technology field.
Background technology
When water is dropped in material surface, due to air-solid-gas three phase boundary tension force and gravity, meeting
Obtain having effigurate drop in material surface, the angle between three-phase can be weighed with contact angle θ.Generally, if water
In the contact angle θ of certain material surface>90 °, then claim this surface that there is hydrophobicity, if θ>150 °, then the surface is referred to as super thin
Water surface., whereas if contact angle θ<90 °, then claim this surface that there is hydrophily.In addition to contact angle, roll angle φ is weighed
Water droplet is defined as the inclination angle on water droplet surface when surface rolls just in the dynamic behaviour of the surface of solids, and roll angle is smaller,
Illustrate that adhesive force of the water droplet on surface is smaller.
If a kind of material surface can meet θ simultaneously>150 ° and φ<10 ° of condition, then the surface will embody uniqueness
Self_cleaning effect, as the function of " the emerging unstained from the filth " of lotus leaf surface.Because stick shape super-hydrophobic-low
Under state, water droplet when water droplet is in surface scrolls, will take away the dirt on surface disengaging table together in the resistance of motion very little on surface
Face.Research shows that super hydrophobic surface often has certain freezing ability, the time that can postpone to freeze, reduce icing area,
Reduce the adhesion of ice and the surface of solids.This freezing property is in many occasion tools such as aircraft, wind-powered electricity generation, exterior aerial, power network
There is significant application value.
Wind energy is as a kind of clean energy resource, and the sustainable development to human society is significant, the dress of wind-power electricity generation
Ascendant trend is presented in worldwide in machine capacity, has good development potentiality.The material that currently used wind electricity blade uses
For galss fiber reinforced resin or carbon fiber-reinforced resin, surface coats different types of resin as protective coating.Wind turbine
Group can be operated in northern low temp area, high altitude localities or high latitude area, and blade faces the risk of icing.Work as winter approached
When, the icing of blade surface can make blade increase weight and lose favourable profile so that efficiency of generating unit reduce even entirely without
Method works, and icing can also cause to damage to blade with rotor, reduce the life-span of unit.Current existing conventional paint coating material
Ice formation issues can not be avoided, simultaneously because long-term wind and weather, blade surface can be infected with various dirts, improve maintenance into
This.2015, global wind-powered electricity generation industry adding new capacity was up to 6.30 × 104Megawatt, China's adding new capacity is up to 3.05 × 104
Megawatt, accounting 48%, China's wind-powered electricity generation industry occupies very big world market share.In consideration of it, prepare with super-hydrophobic from clear
The wind electricity blade surface of clean freezing function is favorably improved annual working time, wind energy utilization efficiency and the leaf of Wind turbines
In the piece life-span, there is important industrial value and wide application prospect.
According to literature search, the super-hydrophobic automatic cleaning correlative study for wind electricity blade is seldom.Although it has been developed that not
The preparation method on few super-hydrophobic automatic cleaning surface, but various limitations be present and be not suitable for applying on wind electricity blade.It is existing
Method is disadvantageous in that：First, many methods are only applicable to metal material system, such as electrochemical erosion method, wind-powered electricity generation leaf
The surface of piece is one layer of resinous coat, and its physical and chemical performance has very big difference with metal；Second, Part Methods employ
" from bottom to top " mode of prepares coating, by the method for self assembly, coating, one layer of hydrophobic coating is obtained in material substrate,
This type coating can all face the problem of hydrophobic coating is with substrate caking power deficiency.Patent CN203067190U proposes to coat on surface
TiO2To realize self-cleaning function, this method is it is difficult to ensure that TiO2The combination of particle and blade；In consideration of it, the present invention proposes to utilize
The method that pulse (ultrashort pulse or short pulse) laser prepares automatically cleaning wind electricity blade, it is former in finished product blade surface with pulse laser
Position controllable preparation micro-nano secondary structure, is aided with chemical modification, obtains self-cleaning surface.
The content of the invention
It is an object of the invention to provide a kind of wind electricity blade super-hydrophobic automatic cleaning surface and preparation method thereof, that is, utilize pulse
Laser prepares special micro and nano structure in blade surface and then realizes super-hydrophobic automatic cleaning wind electricity blade surface, so as to improve wind energy
Utilization ratio and leaf longevity；Having the preparation method simultaneously, process compatibility is good, preparation method is simple, is applicable to wind-powered electricity generation
A variety of coating systems of blade surface.
To reach above-mentioned purpose, technical scheme is as follows：
A kind of super-hydrophobic automatic cleaning wind electricity blade surface, the blade surface contain resinous coat, it is characterised in that the wind
It is densely covered with column micron scale construction on electric blade surface resinous coat, the outer surface of each column micrometer structure is covered with largely receiving
Rice grain, form micro-nano secondary structure.
In above-mentioned technical proposal, described micro-nano secondary structure is densely arranged by quadrangle or hexagon in blade surface,
The spacing of column micrometer structure is 30-100 microns.
Preferably, a diameter of 30-80 microns of each column micrometer structure, it is highly 30-100 microns, nano particle
Size is 60-1000 nanometers.
In above-mentioned technical proposal, the main component of the wind electricity blade resinous coat is polyacrylate, polyurethane or fluorine
Carbon compound, wind electricity blade matrix are galss fiber reinforced resin or carbon fiber-reinforced resin.
A kind of preparation method on super-hydrophobic automatic cleaning wind electricity blade surface provided by the invention, it is characterised in that this method bag
Include following steps：
1) with pulse laser, column micron scale construction is prepared in ablation directly on blade surface resinous coat, based on pulse
The inductive effect of laser, in the outer surface of each column micrometer structure, inductive formation nano particle, formation micrometer structure add simultaneously
The micro-nano secondary structure of nanostructured；Make column micrometer structure densely arranged by quadrangle or hexagon in blade surface；Spacing
For 30-100 microns.
2) low-surface-energy is carried out to the wind electricity blade surface for being densely covered with micro-nano secondary structure after above-mentioned pulse laser processing
Material is modified, that is, obtains super-hydrophobic automatic cleaning wind electricity blade surface.
In the method for the invention, the pulse laser is nanosecond laser, picosecond laser or femtosecond laser.
Low-surface energy substance modification of the present invention, is that laurate or 17 fluorine certain herbaceous plants with big flowers base trimethoxy silanes are made into matter
The methanol or alcohol dilute solution that concentration is 0.1%-5% are measured, the blade after processing is placed in weak solution soaks 1-2 afterwards
Hour, the then heating, drying in drying box again.
In methods described, it is preferable that heating, drying temperature is 60-120 DEG C, and the heat time is 1-2 hour.
The present invention is had the following advantages that and the technique effect of high-lighting due to taking above technical scheme：
1. the present invention realizes the preparation in situ of automatically cleaning wind electricity blade, go for a variety of paintings on wind electricity blade surface
Coating systems, it is applied widely.Compared to new coating, process compatible of the invention are prepared with painting method on the matrix of blade
Property it is good, producer need not change original production line and processing step, without change coating with proportioning, only need to finished product carry out the later stage
Pulse laser processing and chemical modification.2. present invention utilizes pulse laser directly in wind electricity blade ablated surface micrometer structure,
Nanometer result is generated using its inductive effect, controllable preparation goes out with periodic micro-nano secondary structure, compared to pure
Plane nano structure, this composite micro-nano structure are favorably improved the stability and durability on super-hydrophobic automatic cleaning surface.Meanwhile
Micro nano structure parameter such as shape, depth, spacing can fine adjustment, there is good designability and flexibility.It can lead to
Design structure is crossed to adjust the super-hydrophobic automatic cleaning characteristic of blade, such as realizes the anisotropy that water droplet rolls in blade surface.③
Compared to the existing method for preparing micro-nano structure, technique of the invention is simple, cost is relatively low, can be prepared with large area.The present invention
The complex process of chemical method is not needed, it is not necessary to which the template in photoetching process, whole pulse laser machining process is in big compression ring
Carried out in border, utilize high-velocity scanning galvanometer and three-dimension numerical controlled lathe, it is possible to achieve be prepared by quick, large area.It is 4. most of at present
The preparation method of self-cleaning surface concentrates on metal, on semi-conducting material, and the present invention directly handles wind-powered electricity generation table with pulse laser
The resinous coat in face, belong to a kind of brand-new material system.
In summary, the invention provides a kind of side that super-hydrophobic automatic cleaning wind electricity blade surface is prepared using pulse laser
Method, go out micrometer structure in the controllable ablation in situ of finished product blade surface with laser, induce nanostructured, form micro-nano two level knot
Structure, and it is aided with low-surface energy substance modification, blade is shown possess excellent super-hydrophobic automatic cleaning function.The scope of application of the present invention
Extensively, process compatibility is good, designability is strong, it is possible to achieve prepared by large area blade surface.Super-hydrophobic automatic cleaning wind electricity blade energy
Pollution caused by effectively reducing vanes wind and weather, reduces the possibility of icing, is favorably improved the annual of Wind turbines
Working time, wind energy utilization efficiency and leaf longevity, there is important industrial value and wide application prospect.
Brief description of the drawings
Fig. 1 a, Fig. 1 b are respectively that the embodiment of the present invention 1 is prepared using femtosecond laser on polyacrylate coating
Periodic micrometer post array and nano particle stereoscan photograph thereon.
Fig. 2 is self-cleaning surface contact angle test prepared by the embodiment of the present invention 1.
Fig. 3 a and Fig. 3 b are the micron post battle array that embodiment 2 is prepared using femtosecond laser on polyurethanes coating respectively
The stereoscan photograph of row and nano particle thereon.
Fig. 4 is self-cleaning surface contact angle test prepared by the embodiment of the present invention 2.
Fig. 5 a and Fig. 5 b are that the embodiment of the present invention 3 is prepared using nanosecond laser on polyacrylate coating respectively
Columnar arrays and nano particle stereoscan photograph thereon.
Fig. 6 is self-cleaning surface contact angle test prepared by the embodiment of the present invention 4.
Embodiment
The present invention will be further described with specific embodiment below in conjunction with the accompanying drawings, so that the ordinary skill people of this area
Member is more clearly understood that and implemented to the present invention.
Experimental method used in following embodiments is conventional method unless otherwise specified.
Material used, reagent etc., unless otherwise specified, are commercially obtained in following embodiments.
The general principle for the laser preparation method that the present invention uses is to use pulse laser, is removed using laser ablation former
Reason, micro-nano composite second order structure is prepared in wind electricity blade surface in situ, is aided with low-surface energy substance modification, is obtained automatically cleaning wind
Electric blade surface.
A kind of super-hydrophobic automatic cleaning wind electricity blade surface provided by the invention, the blade surface contains resinous coat, described
Column micron scale construction is densely covered with wind electricity blade surface resin coating, the outer surface of each column micrometer structure is covered with a large amount of
Nano particle, form micro-nano secondary structure.The main component of the wind electricity blade resinous coat is usually polyacrylate, poly- ammonia
Ester or fluorocarbons, wind electricity blade matrix are galss fiber reinforced resin or carbon fiber-reinforced resin.
Micro-nano secondary structure is densely arranged by quadrangle or hexagon in blade surface, and the spacing of column micrometer structure is
30-100 microns.A diameter of 30-80 microns of each column micrometer structure, are highly 30-100 microns, the size of nano particle
For 60-1000 nanometers.
A kind of preparation method on super-hydrophobic automatic cleaning wind electricity blade surface provided by the invention, it is characterised in that this method bag
Include following steps：
1) with pulse laser, column micron scale construction is prepared in ablation directly on blade surface resinous coat, based on pulse
The inductive effect of laser, in the outer surface of each column micrometer structure, inductive formation nano particle, formation micrometer structure add simultaneously
The micro-nano secondary structure of nanostructured；Make column micrometer structure densely arranged by quadrangle or hexagon in blade surface；Spacing
For 30-100 microns.Pulse laser general nanosecond laser, picosecond laser or the femtosecond laser.
2) low-surface-energy is carried out to the wind electricity blade surface for being densely covered with micro-nano secondary structure after above-mentioned pulse laser processing
Material is modified, that is, obtains super-hydrophobic automatic cleaning wind electricity blade surface.Described low-surface energy substance modification, is by laurate or ten
Seven fluorine certain herbaceous plants with big flowers base trimethoxy silanes are made into the methanol or alcohol dilute solution that mass concentration is 0.1%-5%, afterwards by after processing
Blade is placed in weak solution 1-2 hour of immersion, then the heating, drying in drying box again；Heating, drying temperature is generally
60-120 DEG C, the heat time is 1-2 hour.
Embodiment 1：Super-hydrophobic automatic cleaning polyacrylate type resin wind electricity blade is prepared using femtosecond laser
The main component of handled wind electricity blade coating is polyacrylate type resin in the present embodiment, including following step
Suddenly：
1), by sample ultrasonic 5min in deionized water, the dirts such as dust, the bulky grain on surface are removed, then with compression
Air blow drying.Using femtosecond laser, optical maser wavelength is 1.03 μm of near-infrared, and light beam is Gaussian Profile, beam quality factor M2<
1.3, single pulse width 800fs, repetition rate 400kHz, mean power 7.2W, utilize more than the laser of scaling loss threshold value
Energy density is 2.5J/cm2, orthogonal grid scanning is carried out on surface using high-velocity scanning galvanometer, line spacing is 40 μm.After scanning
Surface obtain 40 μm of groove structure of cycle, using laser confocal microscope measure microtrabeculae highly be 42.0 μm.Gained knot
As shown in Figure 1a, the nano-particle covered on microtrabeculae is as shown in Figure 1 b for the stereoscan photograph of structure.
2), modified using perfluoro decyl trimethoxy silane as low-surface energy substance, the ethanol for configuring the material 1% is molten
Liquid, the blade after laser treatment is soaked 2 hours wherein.
3), the blade after immersion is dried 30 minutes in drying box, temperature is set as 80 DEG C.
The contact angle that surface after handling is measured using contact angle measurement is 154.5 °, as shown in Figure 2；Roll angle is 5 °.
Embodiment 2：Super-hydrophobic automatic cleaning urethane type coatings wind electricity blade is prepared using femtosecond laser
The material system different from example 1 is chosen in the present embodiment as process object, the master for processing wind electricity blade coating
It is polyurethane based resin to want composition, is comprised the following steps：
1), by sample ultrasonic 5min in deionized water, the dirts such as dust, the bulky grain on surface are removed, then with compression
Air blow drying.Using femtosecond laser, optical maser wavelength is 1.03 μm of near-infrared, and light beam is Gaussian Profile, beam quality factor M2<
1.3, single pulse width 800fs, repetition rate 400kHz, mean power 1.8W, laser energy density is used as 0.6J/
cm2, orthogonal grid scanning is carried out on surface using high-velocity scanning galvanometer, line spacing is 40 μm.Surface after scanning obtains the cycle
40 μm of column structure, it is highly 37.8 μm to measure microtrabeculae using laser confocal microscope.The ESEM of resulting structures shines
As shown in Figure 3 a, the nano-particle covered on microtrabeculae is as shown in Figure 3 b for piece.
2) wind electricity blade, is soaked using technique same as Example 1.
3), using technique same as Example 1 come heater blade.
Using contact angle measurement measure processing after change surface contact angle be 151.2 °, as shown in Figure 6；Roll angle is
9°。
Embodiment 3：Utilize nanosecond laser controllable preparation polyacrylate type coating wind electricity blade
The main component of handled wind electricity blade coating is polyacrylics in the present embodiment, is comprised the following steps：
1), by sample ultrasonic 5min in deionized water, the dirts such as dust, the bulky grain on surface are removed, then with compression
Air blow drying.Using nanosecond laser, optical maser wavelength is 532nm green glow, single pulse width 10ns, repetition rate 30kHz,
Mean power is 0.51W, uses laser energy density as 1.4J/cm2, orthogonal grid is carried out on surface using high-velocity scanning galvanometer
Scanning, line spacing are 50 μm.Surface after scanning obtains 50 μm of column structure of cycle, is measured using laser confocal microscope
Microtrabeculae highly be 7.4 μm, the stereoscan photograph of resulting structures as shown in Figure 5 a, the nano-particle covered on microtrabeculae such as Fig. 5 b institutes
Show.
2) wind electricity blade, is soaked using technique same as Example 1.
3), using technique same as Example 1 come heater blade.
Using contact angle measurement measure processing after change surface contact angle be 158.8 °, roll angle be 4 °, such as Fig. 6 institutes
Show.
Claims (8)
1. a kind of super-hydrophobic automatic cleaning wind electricity blade surface, the blade surface contain resinous coat, it is characterised in that the wind-powered electricity generation
Column micron scale construction is densely covered with blade surface resinous coat, the outer surface of each column micrometer structure is covered with a large amount of nanometers
Particle, form micro-nano secondary structure.
2. a kind of super-hydrophobic automatic cleaning wind electricity blade surface as claimed in claim 1, it is characterised in that micro-nano secondary structure exists
Blade surface is densely arranged by quadrangle or hexagon, and the spacing of column micrometer structure is 30-100 microns.
A kind of 3. super-hydrophobic automatic cleaning wind electricity blade surface according to claim 1 or 2, it is characterised in that：Each column
A diameter of 30-80 microns of micrometer structure, it is highly 30-100 microns, the size of nano particle is 60-1000 nanometers.
A kind of 4. super-hydrophobic automatic cleaning wind electricity blade surface according to claim 3, it is characterised in that：The wind electricity blade
The main component of resinous coat is polyacrylate, polyurethane or fluorocarbons, and wind electricity blade matrix is glass fiber reinforcement
Resin or carbon fiber-reinforced resin.
A kind of 5. preparation method on super-hydrophobic automatic cleaning wind electricity blade surface as claimed in claim 1, it is characterised in that the party
Method comprises the following steps：
1) with pulse laser, column micron scale construction is prepared in ablation directly on blade surface resinous coat, based on pulse laser
Inductive effect, the outer surface of each column micrometer structure simultaneously inductive formation nano particle, formed micrometer structure plus nano
The micro-nano secondary structure of structure；Make column micrometer structure densely arranged by quadrangle or hexagon in blade surface, the column
The spacing of micrometer structure is 30-100 microns；
2) low-surface energy substance is carried out to the wind electricity blade surface for being densely covered with micro-nano secondary structure after above-mentioned pulse laser processing
Modification, that is, obtain super-hydrophobic automatic cleaning wind electricity blade surface.
A kind of 6. preparation method on super-hydrophobic automatic cleaning wind electricity blade surface according to claim 5, it is characterised in that：Institute
It is nanosecond laser, picosecond laser or femtosecond laser to state pulse laser.
A kind of 7. preparation method on super-hydrophobic automatic cleaning wind electricity blade surface according to claim 5, it is characterised in that：Step
It is rapid 2) described in low-surface energy substance modification, be that laurate or 17 fluorine certain herbaceous plants with big flowers base trimethoxy silanes are made into mass concentration to be
0.1%-5% methanol or alcohol dilute solution, the blade after processing is placed on 1-2 hour of immersion in weak solution afterwards, so
The heating, drying in drying box again afterwards.
A kind of 8. super-hydrophobic automatic cleaning wind electricity blade surface according to claim 7, it is characterised in that：Heating, drying temperature
For 60-120 DEG C, the heat time is 1-2 hour.
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| CN114515907A (en) * | 2022-03-03 | 2022-05-20 | 株洲时代新材料科技股份有限公司 | Wind power blade surface roughening method |
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| CN114850680B (en) * | 2022-06-17 | 2023-10-03 | 南京农业大学 | Method for preparing micro-nano surface of plastic substrate by picosecond laser |
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Application publication date: 20180316 |