CN104911600B - A kind of method that utilization short-pulse laser prepares brass super-hydrophobic automatic cleaning surface - Google Patents
A kind of method that utilization short-pulse laser prepares brass super-hydrophobic automatic cleaning surface Download PDFInfo
- Publication number
- CN104911600B CN104911600B CN201510284834.4A CN201510284834A CN104911600B CN 104911600 B CN104911600 B CN 104911600B CN 201510284834 A CN201510284834 A CN 201510284834A CN 104911600 B CN104911600 B CN 104911600B
- Authority
- CN
- China
- Prior art keywords
- brass
- laser
- super
- sample
- short
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Cleaning In General (AREA)
Abstract
The present invention relates to a kind of method that utilization short-pulse laser prepares brass super-hydrophobic automatic cleaning surface, belong to metallic substrate surface technical field of modification.Titanium alloy sample is polished pretreatment by the method first, then deionized water cleaning sample surface in ultrasonic washing instrument is utilized, then washes of absolute alcohol is used, after cleaning up, cold wind is dried up or dried, recycle laser processing technology, sample is surface-treated after the technological parameter that correlation is regulated using short-pulse laser, countless micro-structurals are processed in sample surfaces, after machining, toasted being put into electrically heated drying cabinet by the sample after processing, obtain the brass super-hydrophobic automatic cleaning surface.The surface has micron order papillary structure, and the surface possesses excellent ultra-hydrophobicity, while also having outstanding self-cleaning function.Preparation method process is simple of the invention, easy to operate, efficiency high, less energy consumption, low cost, environmental protection, it is easy to accomplish commercial Application.
Description
Technical field
The invention belongs to metallic substrate surface technical field of modification, it is related to a kind of brass substrate process for modifying surface, more
Say, the present invention relates to a kind of method that utilization short-pulse laser prepares brass super-hydrophobic automatic cleaning surface body.
Background technology
Having many plant flowers leaf surfaces in the middle of nature has the plants such as very prominent self-cleaning function, such as rose
Petal surface just has very prominent super-hydrophobicity, and these performances have widely at the aspect such as material antiseptic erosion, anti-oxidant
Application prospect, thus cause application of the metal surface wellability in association area.The wellability of metal material is metal watch
A critically important feature of face, the microstructure and constituent joint effect of material the wellability of material surface.It is super thin
The essence of water surface is to possess extremely low wellability, and to obtain low wellability and depend primarily on two Fundamentals, i.e. solid
The micro-geometry and surface chemical composition on surface.Judge the hydrophobicity or low wetability on surface generally with instant contact angle or
Roll angle is used as decision criteria：When water droplet on a solid surface, when contact angle is more than 90 °, referred to as hydrophobic surface；Its contact angle surpasses
150 ° are crossed, when roll angle is less than 10 °, is then referred to as super hydrophobic surface.
H62 brass materials are widely used in machinery due to its outstanding anticorrosive property and other excellent performances
The industries such as industry, medical industry, electric industry.H62 brass super hydrophobic surface technologies are in advanced manufacturing industry and national defense industry
It is central to have very important effect.H62 brass surfaces are processed with laser technology, forms H62 brass surfaces self-cleaning super
Hydrophobic surface, very with application prospect.
Preparing the method for metal super-hydrophobic surface has a lot, main method be material surface construct one layer it is coarse micro-
Structure, then plus the material of low-surface-energy in this layer of micro-structural, the main stream approach for forming coarse microstructure has anodic oxidation
Method, nanosecond material coating method, chemical etching method, laser ablation method etc..Anodizing is exactly by the immersion of porous oxidation alumina gel
In the middle of boiling water, then the material and aluminium stone or silica that distil are mixed, in order to effectively obtain super hydrophobic surface, in addition it is also necessary to use
Low-surface energy substance carries out necessary modification to surface, and the efficiency of processing is not high.For example, Application No. 201310079939.7
Patent disclose a kind of preparation method of aluminium alloy bionic super-hydrophobic surface, first with washes of absolute alcohol aluminium alloy, then
Laser machined in aluminum alloy surface, processed the cratering structure of countless minute yardsticks in specimen surface, then sample is immersed
In chemical etching solution, the shape characteristic of specimen surface is set to change, but the method does not break through traditional chemical etching completely
Process of surface treatment, using after laser processing technology also further with chemical etching, and by by the aluminium after chemical etching
Alloy sample is put into the toluene solution containing DTS and is modified, and the film of low-surface-energy is gradually formed on its surface, the treatment
Complex process, and high poison carcinogen toluene has been used, easily cause environmental pollution.Application No. 201410657627.4 it is special
Profit discloses a kind of ultra-hydrophobic high sticking metal surface and preparation method thereof, by high power psec or femtosecond laser in metal watch
Face prepares the periodicity micro nano structure of class rose surface microstructure, then by the surface modification of low free energy material, it is real
Show the preparation of ultra-hydrophobic high sticking metal surface, the method carries out necessary modification to surface using low-surface energy substance, plus
Work efficiency rate is low.Laser processing method is to make the highly consistent micro-structural of form by lithography in metallic substrate surface, improves substrate surface shape
Looks realize substrate surface super-hydrophobic automatic cleaning requirement, and compared to chemical corrosion method, the speed not only processed is fast, it is not necessary in material
Material surface adds one layer of decorative layer, greatly increases processing efficiency, and without any environmental pollution, it is high in machining efficiency and also into
This is low, is adapted to heavy industrialization application.For example, the patent application of Application No. 201410788477.0 discloses a kind of titanium closing
The preparation method of the super-hydrophobic micro-nano structure of gold surface, first carries out ultrasonic wave clear with acetone and absolute alcohol respectively to titanium alloy sample
Wash, obtain the clean titanium alloy sample in surface；Then titanium alloy sample surface clean to surface carries out femtosecond laser photoetching and adds
Work a, step obtains the titanium alloy sample with grating type or well type or the super-hydrophobic micro-nano structure surface of blind round hole type, although profit
Point-device microstructural surfaces can be processed with femto-second laser, but this simple method can not cover femtosecond and swash
Light device inherent defect, such as price and its defect that costliness, processing efficiency are low, processing environment is harsh.Application No.
200910183588.8 patent discloses a kind of bionic metal ultra-wetting trans-scale structure design method and preparation method, the party
Be placed in pending sample in high vacuum chamber by complicated super hydrophilic Theoretical Design by method, carries out two under different angles respectively
Secondary scanning, it is final obtain access expansion biological surface pattern across scale micro-structure, but the method need to strictly control every work
Skill parameter, processing cost is too high, is completely unsuitable for industrialization large-scale production.
In sum, it would be highly desirable to develop a kind of process is simple, preparation efficiency is high, it is adaptable to commercial application, does not produce and appoints
What environmental pollution and disposable realize the super-hydrophobic performance easy to clean of metallic substrate surface and need not move through any chemical technology treatment
Laser processing, be current researcher technical problem urgently to be resolved hurrily.
The content of the invention
In order to overcome the shortcomings of that prior art is present, it is an object of the invention to provide a kind of process is simple, preparation efficiency
High, brass super-hydrophobic automatic cleaning surface of environmental protection and preparation method thereof.The method of the present invention can be in various sizes and difference
The brass material surface of shape obtains steady in a long-term, contact angle and is more than 150 °, super hydrophobic surface of the roll angle less than 10 °, together
When obtained surface also have outstanding self-cleaning performance.
The purpose of the present invention is achieved through the following technical solutions：It is super-hydrophobic that one kind prepares brass using short-pulse laser
The method of self-cleaning surface, methods described comprises the following steps：
Pending brass surfaces are polished pretreatment by step one, obtain the Brass sample after the polishing of surface；
Step 2, the Brass sample after surface polishing described in step one is placed on the ultrasonic washing instrument for filling deionized water
Middle cleaning, then with washes of absolute alcohol, after cleaning up, the drying of Brass sample surface cold wind or room temperature is dried in the air naturally
It is dry, obtain the Brass sample of cleaning；
Step 3, using laser processing technology, is regulated after the technological parameter of correlation to step using short-pulse laser
The clean Brass sample surface obtained described in two carries out laser scanning treatment, and countless micro-structurals are processed in sample surfaces；
The laser scanning carries out light beam scanning using galvanometer system, and the speed of vibration mirror scanning is 0.1mm/s-30m/s, is swashed
The break-make of light and the sweep limits of galvanometer system, scanning track and process velocity are by computer program control and setting；
Or the laser scanning carries out light beam scanning using polygon prism system, the speed of polygon prism scanning is 1m/s-800m/
S, the break-make of laser and the sweep limits of polygon prism system, scanning track and process velocity is by computer program control and sets
It is fixed；
Or the laser scanning is realized using motion platform system, and light beam is fixed, the motion of sample relative beam, platform fortune
Dynamic speed is 0.1mm/s-3m/s, and the break-make of laser, platform movement locus and speed are by computer program control and setting；
Step 4, the surface that will be obtained described in step 3 is put into constant temperature and humidity by the Brass sample after Laser Processing treatment
Baking, obtains the brass super-hydrophobic automatic cleaning surface in electrically heated drying cabinet；
Wherein, the short-pulse laser wavelength described in step 3 is less than 1550nm, and mean power is less than 80W, the laser
Machined parameters are：Pulsewidth is 10ns-500ns, and single pulse energy is less than 1.03mJ.
Further, the brass described in above-mentioned technical proposal is preferably H62 brass.
Further, the repetition rate of short-pulse laser described in step 3 is 70kHz-1MHz in above-mentioned technical proposal,
The pulsewidth is 20ns-240ns.
It is further preferred that the wavelength of the short-pulse laser is 1064nm, the pulsewidth of the short-pulse laser is
100ns-240ns, the single pulse energy is 0.5mJ-0.7mJ, and the repetition rate of the short-pulse laser is 80kHz-
120kHz, the laser scanning speed is 1000mm/s-2000mm/s.
It is further preferred that the pulsewidth is 130ns-240ns.
Still further preferably, the pulsewidth is 240ns, and the single pulse energy is 0.6mJ, the short-pulse laser
Repetition rate be 100kHz, the laser scanning speed be 1000mm/s-1500mm/s.
Still further preferably, the pulsewidth is 130ns, and the single pulse energy scope is 0.5mJ, and the short pulse swashs
The repetition rate of light device is 120kHz, and the laser scanning speed is 1500mm/s-2000mm/s.
Further, the pressure described in above-mentioned technical proposal step 4 in electrically heated drying cabinet is normal atmospheric pressure, humidity
It is 40%-60%RH, temperature is 100 DEG C -250 DEG C, the time of the sample baking is 2-8 hours, in the electrically heated drying cabinet
Temperature error be ± 1 DEG C.
It is further preferred that the humidity in the constant temperature and humidity electrically heated drying cabinet is 50%RH, temperature is 100 DEG C, is dried
The roasting time is 2 hours.
Further, the polishing pretreatment in above-mentioned technical proposal described in step one uses power to turn for 370W, abrasive disk
Speed is 450 revs/min, lap diameter is the pre-grinding test sample of gold phase machine of 230mm, and polishing preprocessing process needs auxiliary a diameter of
200mm, the SiC waterproof abrasive papers of 1000 mesh are processed by shot blasting that polishing scope is 100cm in the brass surfaces2, polishing time 10
Minute.
Further, in above-mentioned technical proposal described in step 2 be cleaned by ultrasonic instrument supersonic frequency be 40kHz, it is described go from
Sub- water resistance rate is 18.25 megaohms, and the deionized water should flood Brass sample surface, at room temperature 30 points of continuous wash
Clock.
Present invention also offers the brass super-hydrophobic automatic cleaning surface prepared by the above method, the surface has micro-
Meter level papillary structure.
Compared with prior art, the inventive method has advantages below：
(1) up to 159.0 °, minimum roll angle is at the brass surfaces Maximum Contact angle for being prepared using the inventive method
8.2 °, therefore with extraordinary ultra-hydrophobicity.
(2) preparation method process is simple of the invention, easy to operate, efficiency high, less energy consumption, low cost overcomes completely
Tradition still needs to again further using low-surface energy substance using chemical reagent etching brass surfaces or after the completion of Laser Processing
The defect of modification of surfaces, environmental protection does not use any chemical reagent coating, and the technological parameter of the inventive method easily to control
System, it is easy to accomplish commercial Application.
(3) the super-hydrophobic brass wire surface property stabilization prepared using the inventive method, possesses self-cleaning work(
Can, considerably increase the service life of brass.
Brief description of the drawings
The contact angle that Fig. 1 (a), (b) are respectively the brass super-hydrophobic automatic cleaning surface that the embodiment of the present invention 1 is prepared shows
Intention, roll angle schematic diagram；
The contact angle that Fig. 2 (c), (d) are respectively the brass super-hydrophobic automatic cleaning surface that the embodiment of the present invention 2 is prepared shows
Intention, roll angle schematic diagram；
The contact angle that Fig. 3 (e), (f) are respectively the brass super-hydrophobic automatic cleaning surface that the embodiment of the present invention 3 is prepared shows
Intention, roll angle schematic diagram；
The contact angle that Fig. 4 (g), (h) are respectively the brass super-hydrophobic automatic cleaning surface that the embodiment of the present invention 4 is prepared shows
Intention, roll angle schematic diagram；
Fig. 5 is the scanning electron microscope (SEM) photograph on the brass super-hydrophobic automatic cleaning surface that the embodiment of the present invention 1 is prepared；
Fig. 6 is the scanning electron microscope (SEM) photograph on the brass super-hydrophobic automatic cleaning surface that the embodiment of the present invention 2 is prepared；
Fig. 7 is the scanning electron microscope (SEM) photograph on the brass super-hydrophobic automatic cleaning surface that the embodiment of the present invention 3 is prepared；
Fig. 8 is the scanning electron microscope (SEM) photograph on the brass super-hydrophobic automatic cleaning surface that the embodiment of the present invention 4 is prepared.
Specific embodiment
In order to be better understood from the present invention, technical scheme is done further in detail below in conjunction with specific embodiment
Introduce.
Experimental technique used in following embodiments is conventional method unless otherwise specified.
The method that a kind of utilization short-pulse laser of the present invention prepares brass super-hydrophobic automatic cleaning surface, with reference to nature
Boundary's biomaterial is used as design basis, the knot that natural imitation circle Biocomposite material fine structure is distributed in H62 brass surfaces
Structure feature, design surface structure.
Embodiment 1
The method that a kind of utilization short-pulse laser of the present embodiment prepares brass super-hydrophobic automatic cleaning surface, including following tool
Body step：
Step one, is 370W from power by pending H62 brass polishings, and lap speed is 450 revs/min, grinding
The pre-grinding test sample of gold phase machine of a diameter of 230mm of disk, polishing process needs to aid in the SiC waterproof abrasive papers of a diameter of 200mm, 1000 mesh to exist
The brass surfaces are processed by shot blasting that polishing scope is 100cm2, polishing time 10 minutes, obtain surface polishing after brass
Sample；
Step 2, the Brass sample after surface polishing described in step one is cleaned with ultrasonic washing instrument, ultrasonic wave cleaning
Instrument ultrasonic frequency is 40kHz, and sample surfaces are flooded with the deionized water that resistivity is 18.25 megaohms, at room temperature, continuous clear
Wash 30 minutes, then with washes of absolute alcohol, after cleaning up, room temperature is dried naturally, obtain the Brass sample of cleaning；
Step 3, using short-pulse laser, laser wavelength is 1064nm, to the clean brass obtained described in step 2
Sample surfaces carry out laser scanning manufacturing, and countless micro-structurals are processed in sample surfaces；The laser pulsewidth is 240ns,
Single pulse energy is 0.6mJ, and repetition rate is 100kHz, the laser scanning utilize X-Y scanning galvanometer systems, make laser beam with
Brass sample surface described in the ablation line by line of the speed of 1475mm/s；The galvanometer system is driven by X-Y optical scanning heads, electronics
Dynamic amplifier, optical reflecting lens and field lens composition, the sweep limits and speed of the galvanometer system, line are scanned and Surface scan road
Footpath is controlled and sets by computer, and the signal that the computer is provided passes through drive amplification circuit drives optical scanning head, from
And control the deflection of laser beam in X-Y plane, sample moves in the x-direction relative to laser beam, by control translational speed and
Laser pulse repetition frequency, makes its pulse matching degree reach 1%-99%, after completing movement, then single step stepping in the y-direction, pass through
Control step distance, makes its light beam registration reach 1%-99%, workbench reversion in y directions, and the sample range of work is
126mm x 126mm；
Step 4, sample by being put into electrically heated drying cabinet by the sample after processing by after step 3 Laser Processing, drying
Roasting, in air pressure for normal atmospheric is depressed, humidity is 50%RH, and temperature is constant temperature baking 2 hours under the conditions of 100 DEG C, obtains described
Brass super-hydrophobicity self-cleaning surface.
It is 18.25 megaohms of deionized water to use resistivity, is tested using optical contact angle surface interfacial tension measuring instrument
Contact angle, the roll angle of the brass super-hydrophobicity self-cleaning surface for obtaining：Measured using the method that accesses, the shape under liquid feeding syringe needle
Into the suspension drop of required volume, the Z axis for adjusting example platform rise sample surfaces, when outstanding under sample surfaces and liquid feeding syringe needle
When the drop bottom of extension contacts, drop is just transferred to sample surfaces from liquid feeding syringe needle, then makes sample by adjusting sample stage Z axis again
Product surface drops to original position and measures, because the brass surfaces ultra-hydrophobicity for preparing is excellent, 3-8 microlitres
Water droplet cannot adhere to, so drop volume is 9 microlitres, test temperature is 25.5 DEG C, and humidity is 19.5%RH.
The brass super-hydrophobic automatic cleaning surface that the present embodiment is prepared, its stereoscan photograph is as shown in figure 5, its surface
Micron-sized papillary structure is presented.
The brass super-hydrophobic automatic cleaning surface that the present embodiment is prepared is shown with contact angle schematic diagram such as Fig. 1 (a) of water,
Shown in roll angle schematic diagram such as Fig. 1 (b).
The brass super-hydrophobic automatic cleaning surface that the present embodiment is prepared is 159.0 ° with the contact angle of water, and roll angle is
8.2 °, test result is shown in Table 1.
Embodiment 2
The method that a kind of utilization short-pulse laser of the present embodiment prepares brass super-hydrophobic automatic cleaning surface, including following tool
Body step：
Step one, is 370W from power by pending H62 brass polishings, and lap speed is 450 revs/min, grinding
The pre-grinding test sample of gold phase machine of a diameter of 230mm of disk, polishing process needs to aid in the SiC waterproof abrasive papers of a diameter of 200mm, 1000 mesh to exist
The brass surfaces are processed by shot blasting that polishing scope is 100cm2, polishing time 10 minutes, obtain surface polishing after brass
Sample；
Step 2, the Brass sample after surface polishing described in step one is cleaned with ultrasonic washing instrument, ultrasonic wave cleaning
Instrument ultrasonic frequency is 40kHz, and sample surfaces are flooded with the deionized water that resistivity is 18.25 megaohms, at room temperature, continuous clear
Wash 30 minutes, then with washes of absolute alcohol, after cleaning up, dried up with cold wind, obtain the Brass sample of cleaning；
Step 3, using short-pulse laser, laser wavelength is 1064nm, to the clean brass obtained described in step 2
Sample surfaces carry out laser scanning manufacturing, and countless micro-structurals are processed in sample surfaces, and the laser pulsewidth is 175ns,
Single pulse energy is 0.7mJ, and repetition rate is 86kHz, the laser scanning routing motion workbench, will be obtained described in step 2
To clean Brass sample be fixed on motion workbench on, using lens by laser beam focusing on to the sample, make sample
The surface of product etches hot spot along x, y, z three-dimensional direction moving relative to the focusing of the pulse laser light beam, and speed is
1268.5mm/s, by Brass sample surface described in ablation line by line, realizes the etching of micro-nano structure；The motion platform list
Unit is three-dimensional servo precision mobile platform, and scope, speed, the direction of the platform movement, can be along X, Y, Z by computer controls
Three-dimensional direction moving, the sample range of work is 150mm x 150mm；
Step 4, sample by being put into electrically heated drying cabinet by the sample after processing by after step 3 Laser Processing, drying
Roasting, in air pressure for normal atmospheric is depressed, humidity is 40%RH, and temperature is constant temperature baking 8 hours under the conditions of 100 DEG C, obtains described
Brass super-hydrophobicity self-cleaning surface.
It is 18.25 megaohms of deionized water to use resistivity, is tested using optical contact angle surface interfacial tension measuring instrument
Contact angle, the roll angle of the brass super-hydrophobicity self-cleaning surface for obtaining, because the brass surfaces for preparing are super-hydrophobic
Excellent performance, 3-8 microlitres of water droplet cannot adhere to, so drop volume is 9 microlitres, test temperature is 25.5 DEG C, and humidity is
19.5%RH.
The brass super-hydrophobic automatic cleaning surface that the present embodiment is prepared, its stereoscan photograph is as shown in fig. 6, its surface
Micron-sized papillary structure is presented.
The brass super-hydrophobic automatic cleaning surface that the present embodiment is prepared is shown with contact angle schematic diagram such as Fig. 2 (c) of water,
Shown in roll angle schematic diagram such as Fig. 2 (d).
The brass super-hydrophobic automatic cleaning surface that the present embodiment is prepared is 152.9 ° with the contact angle of water, and roll angle is
8.4 °, test result is shown in Table 1.
Embodiment 3
The method that a kind of utilization short-pulse laser of the present embodiment prepares brass super-hydrophobic automatic cleaning surface, including following tool
Body step：
Step one, is 370W from power by pending H62 brass polishings, and lap speed is 450 revs/min, grinding
The pre-grinding test sample of gold phase machine of a diameter of 230mm of disk, polishing process needs to aid in the SiC waterproof abrasive papers of a diameter of 200mm, 1000 mesh to exist
The brass surfaces are processed by shot blasting that polishing scope is 100cm2, polishing time 10 minutes, obtain surface polishing after brass
Sample；
Step 2, the Brass sample after surface polishing described in step one is cleaned with ultrasonic washing instrument, ultrasonic wave cleaning
Instrument ultrasonic frequency is 40kHz, and sample surfaces are flooded with the deionized water that resistivity is 18.25 megaohms, at room temperature, continuous clear
Wash 30 minutes, then with washes of absolute alcohol, after cleaning up, room temperature is dried naturally, obtain the Brass sample of cleaning；
Step 3, using short-pulse laser, laser wavelength is 1064nm, to the clean brass obtained described in step 2
Sample surfaces carry out laser scanning manufacturing, and countless micro-structurals are processed in sample surfaces, and the pulsewidth of the laser is
130ns, single pulse energy is 0.5mJ, and repetition rate is 120kHz, and the laser scanning utilizes X-Y scanning galvanometer systems, makes to swash
Light beam is with Brass sample surface described in the ablation line by line of the speed of 1770mm/s；The galvanometer system by X-Y optical scanning heads,
Electric drive amplifier, optical reflecting lens and field lens composition, the sweep limits and speed of the galvanometer system, line are scanned and face
Scanning pattern is controlled and sets by computer, and the signal that the computer is provided passes through drive amplification circuit drives optical scanner
Head, so as to control the deflection of laser beam in X-Y plane, sample is moved in the x-direction relative to laser beam, by controlling mobile speed
Degree and laser pulse repetition frequency, make its pulse matching degree reach 1%-99%, after completing movement, then single step stepping in the y-direction,
By controlling step distance, its light beam registration is set to reach 1%-99% in y directions, workbench reversion, the sample processes model
It is 126mm x 126mm to enclose；
Step 4, sample by being put into electrically heated drying cabinet by the sample after processing by after step 3 Laser Processing, drying
Roasting, in air pressure for normal atmospheric is depressed, humidity is 50%RH, and temperature is constant temperature baking 4 hours under the conditions of 200 DEG C, obtains described
Brass super-hydrophobicity self-cleaning surface.
It is 18.25 megaohms of deionized water to use resistivity, is tested using optical contact angle surface interfacial tension measuring instrument
Contact angle, the roll angle of the brass super-hydrophobicity self-cleaning surface for obtaining, because the brass surfaces for preparing are super-hydrophobic
Excellent performance, 3-8 microlitres of water droplet cannot adhere to, so drop volume is 9 microlitres, test temperature is 25.5 DEG C, and humidity is
19.5%RH.
The brass super-hydrophobic automatic cleaning surface that the present embodiment is prepared, its stereoscan photograph is as shown in fig. 7, its surface
Micron-sized papillary structure is presented.
The brass super-hydrophobic automatic cleaning surface that the present embodiment is prepared is shown with contact angle schematic diagram such as Fig. 3 (e) of water,
Shown in roll angle schematic diagram such as Fig. 3 (f).
The brass super-hydrophobic automatic cleaning surface that the present embodiment is prepared is 155.1 ° with the contact angle of water, and roll angle is
9.1 °, test result is shown in Table 1.
Embodiment 4
The method that a kind of utilization short-pulse laser of the present embodiment prepares brass super-hydrophobic automatic cleaning surface, including following tool
Body step：
Step one, by pending H62 brass polishings, polishing is 370W from power, and lap speed is 450 revs/min,
Lap diameter is the pre-grinding test sample of gold phase machine of 230mm, and polishing process needs to aid in the SiC water sands of a diameter of 200mm, 1000 mesh
Paper is processed by shot blasting that polishing scope is 100cm in the brass surfaces2, polishing time 10 minutes, after obtaining surface polishing
Brass sample；
Step 2, the Brass sample after surface polishing described in step one is cleaned with ultrasonic washing instrument, ultrasonic wave cleaning
Instrument ultrasonic frequency is 40kHz, and sample surfaces are flooded with the deionized water that resistivity is 18.25 megaohms, at room temperature, continuous clear
Wash 30 minutes, then with washes of absolute alcohol, after cleaning up, room temperature is dried naturally, obtain the Brass sample of cleaning；
Step 3, using short-pulse laser, laser wavelength is 1064nm, to the clean brass obtained described in step 2
Sample surfaces are laser machined, and countless micro-structurals are processed in sample surfaces, and the pulsewidth of the laser is 100ns, single
Pulse energy is 0.5mJ, and repetition rate is 120kHz, and the laser scanning utilizes polygon prism system, makes laser beam with 1770mm/
Brass sample surface described in the ablation line by line of the speed of s, the sample range of work is 100cm2；The polygon prism system is by a high speed
The polygonal prism of rotation, electric drive amplifier and field lens composition, the line sweep limits and speed of the polygon prism system are equal
It is controlled by computer controller and is set, the signal that the computer controller is provided is more by the drive amplification circuit drives
Prism, can realize laser beam deflection in one-dimensional square, while being combined with motion platform, realize the movement of other direction,
Wherein Brass sample is moved in the x-direction relative to laser beam, by controlling translational speed and laser pulse repetition frequency, makes it
Pulse matching degree reaches 1%-99%, after completing movement, then single step stepping in the y-direction, by controlling step distance, make its light beam
Registration reaches 1%-99% in y directions；
Step 4, sample by being put into electrically heated drying cabinet by the sample after processing by after step 3 Laser Processing, drying
Roasting, in air pressure for normal atmospheric is depressed, humidity is 60%RH, and temperature is constant temperature baking 2 hours under the conditions of 250 DEG C, obtains described
Brass super-hydrophobicity self-cleaning surface.
It is 18.25 megaohms of deionized water to use resistivity, is tested using optical contact angle surface interfacial tension measuring instrument
Contact angle, the roll angle of the brass super-hydrophobicity self-cleaning surface for obtaining, because the brass surfaces for preparing are super-hydrophobic
Excellent performance, 3-8 microlitres of water droplet cannot adhere to, so drop volume is 9 microlitres, test temperature is 25.5 DEG C, and humidity is
19.5%RH.
The brass super-hydrophobic automatic cleaning surface that the present embodiment is prepared, its stereoscan photograph is as shown in Figure 8.Its surface
Micron-sized papillary structure is presented.
The brass super-hydrophobic automatic cleaning surface that the present embodiment is prepared is shown with contact angle schematic diagram such as Fig. 4 (g) of water,
Shown in roll angle schematic diagram such as Fig. 4 (h).
The brass super-hydrophobic automatic cleaning surface that the present embodiment is prepared is 151.2 ° with the contact angle of water, and roll angle is
9.5 °, test result is shown in Table 1.
The test of brass super-hydrophobic automatic cleaning surface contact angle, roll angle that table 1 is prepared for various embodiments of the present invention
As a result.
Table 1
| Embodiment | Contact angle/° | Roll angle/° |
| Embodiment 1 | 159.0 | 8.2 |
| Embodiment 2 | 152.9 | 8.4 |
| Embodiment 3 | 155.1 | 9.1 |
| Embodiment 4 | 151.2 | 9.5 |
The above embodiment of the present invention is not to the present invention just for the sake of clearly illustrating examples of the invention
Implementation method restriction.Every any modification made in spirit of the invention and principle, equivalent and improvement etc. all should
It is included within the protection domain of the claims in the present invention.
Claims (9)
1. a kind of method that utilization short-pulse laser prepares brass super-hydrophobic automatic cleaning surface, methods described comprises the following steps：
Pending brass surfaces are polished pretreatment by step one, obtain the Brass sample after the polishing of surface；
Step 2, the Brass sample after surface polishing described in step one is placed in the ultrasonic washing instrument for fill deionized water clear
Wash, then with washes of absolute alcohol, after cleaning up, the drying of Brass sample surface cold wind or room temperature dried naturally,
Obtain the Brass sample of cleaning；
Step 3, using laser processing technology, is regulated after the technological parameter of correlation to step 2 institute using short-pulse laser
Stating the clean Brass sample surface for obtaining carries out laser scanning treatment, and countless micro-structurals are processed in sample surfaces；
The laser scanning carries out light beam scanning using galvanometer system, and the speed of vibration mirror scanning is 0.1mm/s-30m/s, laser
The sweep limits of break-make and galvanometer system, scanning track and process velocity are by computer program control and setting；
Or the laser scanning carries out light beam scanning using polygon prism system, the speed of polygon prism scanning is 1m/s-800m/s, is swashed
The break-make of light and the sweep limits of polygon prism system, scanning track and process velocity are by computer program control and setting；
Or the laser scanning is realized using motion platform system, and light beam is fixed, the motion of sample relative beam, platform motion
Speed is 0.1mm/s-3m/s, and the break-make of laser, platform movement locus and speed are by computer program control and setting；
Step 4, the surface that will be obtained described in step 3 is put into constant temperature and humidity electric heating by the Brass sample after Laser Processing treatment
Baking, obtains the brass super-hydrophobic automatic cleaning surface in drying box；
Wherein, the short-pulse laser wavelength described in step 3 is less than 1550nm, and mean power is less than 80W, the Laser Processing
Parameter is：Pulsewidth is 10ns-500ns, and single pulse energy is less than 1.03mJ；
Pressure described in step 4 in electrically heated drying cabinet is normal atmospheric pressure, and humidity is 40%-60%RH, temperature is 100 DEG C-
250 DEG C, the time of the sample baking is 2-8 hours, and the temperature error in the electrically heated drying cabinet is ± 1 DEG C.
2. the method that a kind of utilization short-pulse laser as claimed in claim 1 prepares brass super-hydrophobic automatic cleaning surface, it is special
Levy and be：Described brass is H62 brass.
3. the method that a kind of utilization short-pulse laser as claimed in claim 1 or 2 prepares brass super-hydrophobic automatic cleaning surface, its
It is characterised by：The repetition rate of short-pulse laser described in step 3 is 70kHz-1MHz, and the pulsewidth is 20ns-240ns.
4. the method that a kind of utilization short-pulse laser as claimed in claim 3 prepares brass super-hydrophobic automatic cleaning surface, it is special
Levy and be：The wavelength of the short-pulse laser is 1064nm, and the pulsewidth of the short-pulse laser is 100ns-240ns, institute
Single pulse energy is stated for 0.5mJ-0.7mJ, the repetition rate of the short-pulse laser is 80kHz-120kHz, and the laser is swept
Speed is retouched for 1000mm/s-2000mm/s.
5. the method that a kind of utilization short-pulse laser as claimed in claim 4 prepares brass super-hydrophobic automatic cleaning surface, it is special
Levy and be：The pulsewidth is 130ns-240ns.
6. the method that a kind of utilization short-pulse laser as claimed in claim 5 prepares brass super-hydrophobic automatic cleaning surface, it is special
Levy and be：The pulsewidth is 240ns, and the single pulse energy is 0.6mJ, and the repetition rate of the short-pulse laser is
100kHz, the laser scanning speed is 1000mm/s-1500mm/s.
7. the method that a kind of utilization short-pulse laser as claimed in claim 5 prepares brass super-hydrophobic automatic cleaning surface, it is special
Levy and be：The pulsewidth is 130ns, and the single pulse energy scope is 0.5mJ, and the repetition rate of the short-pulse laser is
120kHz, the laser scanning speed is 1500mm/s-2000mm/s.
8. the method that a kind of utilization short-pulse laser as claimed in claim 1 prepares brass super-hydrophobic automatic cleaning surface, it is special
Levy and be：Humidity in the constant temperature and humidity electrically heated drying cabinet is 50%RH, and temperature is 100 DEG C, and the time of baking is 2 hours.
9. the brass super-hydrophobic automatic cleaning surface that a kind of method described in use claim any one of 1-8 is prepared, it is described
Surface has micron order papillary structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510284834.4A CN104911600B (en) | 2015-05-28 | 2015-05-28 | A kind of method that utilization short-pulse laser prepares brass super-hydrophobic automatic cleaning surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510284834.4A CN104911600B (en) | 2015-05-28 | 2015-05-28 | A kind of method that utilization short-pulse laser prepares brass super-hydrophobic automatic cleaning surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104911600A CN104911600A (en) | 2015-09-16 |
| CN104911600B true CN104911600B (en) | 2017-07-07 |
Family
ID=54081032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510284834.4A Active CN104911600B (en) | 2015-05-28 | 2015-05-28 | A kind of method that utilization short-pulse laser prepares brass super-hydrophobic automatic cleaning surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104911600B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386060B (en) * | 2015-10-29 | 2018-08-28 | 上海博物馆 | A method of in band rust Bronze constructing super-drainage film |
| CN107039131A (en) * | 2017-03-31 | 2017-08-11 | 湖北工业大学 | A kind of method that pulse laser prepares silicon rubber super-hydrophobic automatic cleaning surface |
| CN112222766A (en) * | 2020-09-14 | 2021-01-15 | 西南科技大学 | Orientation surface preparation method for controlling directional bounce of liquid drop |
| CN112676706B (en) * | 2020-12-16 | 2022-10-25 | 湖北工业大学 | Preparation method of heat dissipation plate based on pulse laser and heat dissipation plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1209153A (en) * | 1995-12-22 | 1999-02-24 | 东陶机器株式会社 | Photocatalytic process for making surface hydrophilic and composite material having photocatalytically hydrophilic surface |
| CN101219506A (en) * | 2008-01-07 | 2008-07-16 | 江苏大学 | Laser production method for metal base ultra-hydrophobicity micro-structure surface |
| WO2014118778A1 (en) * | 2013-01-31 | 2014-08-07 | Dina Katsir | Low fluorescence utensils |
| CN104498957A (en) * | 2014-12-17 | 2015-04-08 | 中国航空工业集团公司北京航空制造工程研究所 | Preparation method of super-hydrophobic micro-nano structure on titanium alloy surface |
-
2015
- 2015-05-28 CN CN201510284834.4A patent/CN104911600B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1209153A (en) * | 1995-12-22 | 1999-02-24 | 东陶机器株式会社 | Photocatalytic process for making surface hydrophilic and composite material having photocatalytically hydrophilic surface |
| CN101219506A (en) * | 2008-01-07 | 2008-07-16 | 江苏大学 | Laser production method for metal base ultra-hydrophobicity micro-structure surface |
| WO2014118778A1 (en) * | 2013-01-31 | 2014-08-07 | Dina Katsir | Low fluorescence utensils |
| CN104498957A (en) * | 2014-12-17 | 2015-04-08 | 中国航空工业集团公司北京航空制造工程研究所 | Preparation method of super-hydrophobic micro-nano structure on titanium alloy surface |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104911600A (en) | 2015-09-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104907701A (en) | Method for manufacturing stainless steel super-hydrophobic self-cleaning surface through ultra-fast lasers | |
| CN104911599B (en) | A kind of method that aluminium alloy super-hydrophobic automatic cleaning surface is prepared using ultrafast laser | |
| CN104985328B (en) | A kind of method that utilization nanosecond laser prepares titanium alloy super-hydrophobic frost resistance surface | |
| CN104907697B (en) | A kind of method that utilization ultrafast laser prepares titanium alloy super-hydrophobic frost resistance surface | |
| CN104907702A (en) | Method for preparing stainless steel super-hydrophobic self-cleaning surface with short pulse laser light | |
| CN104947116A (en) | Method for preparing aluminum alloy superhydrophobic self-cleaning surface by using ultrashort pulse laser | |
| CN104911600B (en) | A kind of method that utilization short-pulse laser prepares brass super-hydrophobic automatic cleaning surface | |
| CN104911329A (en) | Method for preparation of stainless steel superhydrophobic corrosion-resistant surface by use of ultrashort pulse laser | |
| CN104625415B (en) | Femtosecond laser prepares method and the device of bionic super-hydrophobic micro nano surface | |
| CN106583930A (en) | Method for achieving reversible wettability of titanium sheet based on femtosecond laser direct writing | |
| CN107695528B (en) | A method of regulating and controlling preparation large area difference micro nano structure using femtosecond laser | |
| CN107132210B (en) | A kind of substrate manufacturing method of the surface-enhanced Raman based on dynamic control | |
| CN104911519B (en) | A kind of method that titanium alloy super-hydrophobic frost resistance surface is prepared using ultra-short pulse laser | |
| CN104907698A (en) | Method for manufacturing zinc alloy super-hydrophobic self-cleaning surface through short-pulse lasers | |
| CN102336393A (en) | Method for preparing hydrophobic micro-structure on surface of organic glass through femtosecond laser | |
| RU2605401C2 (en) | Method of metal surface super hydrophobic properties making | |
| CN110640305A (en) | Super-hydrophobic surface preparation system based on femtosecond laser space-time shaping | |
| CN104907699B (en) | Method for preparing cast iron super-hydrophobic corrosion-resistant surface with short pulse laser light | |
| CN104988507A (en) | Method for preparing cast iron super-hydrophobic anti-corrosion surface by means of ultrafast laser | |
| CN104308369A (en) | Method for manufacturing iridescent super-hydrophobic bionic surfaces on copper substrates | |
| CN111805089A (en) | Stable super-hydrophobic self-cleaning surface and preparation method thereof by double-beam interference method | |
| CN109128512A (en) | A kind of micro-nano self-organizing structures and preparation method in stainless steel surface preparation | |
| CN104947016B (en) | Method for preparing zinc alloy super-hydrophobic and self-cleaning surface by using ultra-short pulse laser | |
| CN104911598B (en) | A kind of method that kirsite super-hydrophobic automatic cleaning surface is prepared using ultrafast laser | |
| CN110653143A (en) | Spraying method after laser etching of aluminum alloy surface texture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |