CN109701298A - Super affine super close-super thin gas copper foil of wetability gradual change and preparation method thereof and Positioning collection device - Google Patents
Super affine super close-super thin gas copper foil of wetability gradual change and preparation method thereof and Positioning collection device Download PDFInfo
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Abstract
The present invention provides two kinds of copper foils, the first is the super close gas copper foil of wetability gradual change, including copper foil and stearic acid film, second of super close-super thin gas copper foil for wetability gradual change, avris on the surface of the first copper foil removes stearic acid film, additionally provide preparation method, after copper foil cleaning drying, it will be immersed in stearic acid ethanol solution after the padded laser ablation very low power in side and micropore, obtain the first copper foil, avris removes stearic acid film, and second obtained of copper foil is used for underwater bubble Positioning collection device.The first copper foil of the invention has wettability gradient, micropore is provided with the deeper one end of lateral very low power groove depth, the direction aerophily that transversely very low power groove depth reduces is by weakening by force, second of copper foil has the region of super close gas and the region of super thin gas, with preferable bubble repellency and bubble adsorptivity, it can be used for the directional collecting of underwater bubble, collection device can be made simply light while expanding capture range.
Description
Technical field
The invention belongs to the technical fields of the modified copper foil of laser micro/nano rice, and in particular to a kind of super close gas of wetability gradual change
The Positioning collection device of body copper foil and super close-super thin gas copper foil and preparation method thereof and underwater bubble.
Background technique
Bubble in liquid can bring many detrimental effects in certain fields, such as the bubble in microfluidic control system,
It will increase the flow loss between fluid, reduce flowing velocity, or even can cause to block；When intravenous injection, enter with injecting fluid
Gas embolism can occur for the gas in human vas, and heart failure is caused to even result in death；In electrochemical reaction, it is adhered to electricity
The bubble of pole will affect the contact between electrode and reactant, make the reduction of electrochemical reaction efficiency；When underwater operation, it is adhered to latent
Bubble on hydroscope can cause people's dimness of vision；When underwater camera, the bubble being adhered on camera lens can make camera fuzzy, from
And lead to the fuzzy of image；In nature, water-bed or sea-bottom natural gas discharge leads to air pollution and the waste of resource.Cause
This, needs that the bubble in liquid or in water is removed or is collected in certain fields, to reduce the bad shadow of bubble bring
It rings and Collection utilization is subject to useful gas.
Summary of the invention
Technical problem to be solved by the present invention lies in view of the above shortcomings of the prior art, provide a kind of wetability gradual change
Super close gas copper foil and super close-super thin gas copper foil, the super close gas copper foil of the wetability gradual change of the invention is with wetability
The gradient of gradual change, for the aerophily of the super close gas copper foil of wetability gradual change also by weakening by force, micropore is provided with lateral very low power
The deeper one end of groove depth, super close-super thin gas copper foil of wetability gradual change of the invention be provided simultaneously with super close gas region and
The region of super thin gas has preferable bubble repellency and bubble adsorptivity, can be used for the directional collecting of underwater bubble, expands
Collection device can be made simply light while capture range.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of super close gas copper of wetability gradual change
Foil, the stearic acid film including copper foil and setting on surfaces of the copper foil, the ablated surface of the copper foil have latticed very low power,
And one end of copper foil offers multiple micropores being arranged in array, the very low power makes the surface of copper foil form micro-nano layering
Rough surface, the stearic acid film are covered on the rough surface, the very low power include multiple lateral very low powers and
The groove depth of multiple longitudinal very low powers, the lateral very low power and longitudinal very low power is transversely gradually deepened, described
Micropore is provided with the deeper one end of lateral very low power groove depth, super close gas copper described in the direction that transversely very low power groove depth reduces
The aerophily of foil is by weakening by force.
Preferably, the diameter of the micropore is 100 μm~200 μm, and the spacing of adjacent cells is 1mm；Adjacent very low power
Spacing is 70 μm~100 μm, and the size of the micro-and nano-particles of the rough surface is 20nm~500nm.
A kind of super close-super thin gas copper foil of wetability gradual change, the super close gas copper foil including wetability gradual change are described super
The avris removal stearic acid film on the surface of close gas copper foil forms super close-super thin gas copper foil of wetability gradual change.
The present invention also provides the preparation methods of the super close gas copper foil of above-mentioned wetability gradual change, and this method includes following
Step:
Step 1: copper foil is successively cleaned with ethanol solution and distilled water, then with being dried with nitrogen, will clean after drying up
Copper foil side is padded, and laser, to the ablation line by line of the other side of copper foil, is formed more after the side focusing that copper foil and horizontal plane join
A lateral very low power forms multiple longitudinal very low powers, horizontal and vertical friendship then further along the ablation by column of vertical direction
Fork-shaped is at latticed, and along the direction of laser ablation line by line, the groove depth of lateral very low power and longitudinal very low power gradually subtracts
Small, the roughness of copper foil surface gradually decreases, and the copper foil surface after laser ablation forms the rough surface of micro-nano layering, obtains
The copper foil of superficial roughness gradual change；
Step 2: the deeper one end of the lateral very low power groove depth of the copper foil of the superficial roughness gradual change obtained in step 1 is swashed
The multiple micropores of light ablation obtain the copper foil of the superficial roughness gradual change with micropore；The micropore is arranged in array on copper foil；
Step 3: the copper foil for the superficial roughness gradual change that step 2 obtains having micropore is immersed in stearic acid ethanol solution
In, after then drying under normal temperature conditions, copper foil surface forms stearic acid film, obtains the super close gas copper of wetability gradual change
Foil.
Preferably, the padded angle of copper foil side described in step 1 is 1 °~3 °.
Preferably, the time cleaned in step 1 is 5min~15min, and the time being dried with nitrogen is 2min~6min.
It preferably, is 0.01mol/L~0.1mol/L, the time of immersion in the concentration of stearic acid ethanol solution in step 3
For 30min~60min.
Preferably, the time dry in step 3 is 5min~20min.
The present invention also provides the preparation method of super close-super thin gas copper foil of above-mentioned wetability gradual change, this method are as follows:
Laser ablation is carried out to the super close gas copper foil of the above-mentioned wetability gradual change to preparation, removes the super close gas of the wetability gradual change
The stearic acid film of body copper foil avris obtains super close-super thin gas copper foil of wetability gradual change.
Preferably, the detailed process of laser ablation selective removal stearic acid film are as follows: pass through control computer software
Graphical interfaces, design need to remove the figure of stearic acid film；Then laser sequentially carries out ablation by column again after ablation line by line, scanning
Grid spacing is 30 μm, laser energy density 1.21J/cm2, scanning speed 1000mm/s, and scanning times are 3 times.
Super close-super thin gas copper foil of wetability gradual change of the invention is applied to the Positioning collection device of underwater bubble, packet
Include super close-super thin gas copper foil, gas collection container and the gas bottle of wetability gradual change, super close-super thin gas of the wetability gradual change
The bottom open-mouth of gas collection container, super close-super thin gas of super close-super thin gas copper foil of wetability gradual change is arranged in body copper foil
It is arranged downwards, seals snare on the outer wall of the bottom of gas collection container, lock super close-super thin gas copper foil of wetability gradual change
With gas collection container, metal retainer plate is cased on the outside of sealing ring, the side of metal retainer plate is uniformly provided with multiple hanging holes, described
Counterweight pendant is hung on hanging hole, the top of gas collection container is connect by connector with soft air-guide pipe, and the soft air-guide pipe protrudes into
In gas bottle.
Compared with the prior art, the present invention has the following advantages:
1, there is super close-super thin gas copper foil of wetability gradual change of the invention preferable bubble repellency and bubble to adsorb
Property, it can be used for the directional collecting of underwater bubble, collection device can be made simply light while expanding capture range, it is of the invention
Preparation process is simple, cheap, and bubble position is controllable, can be mass produced and use.
2, direction of the super close gas copper foil of wetability gradual change of the invention along laser ablation line by line, lateral very low power
It is gradually reduced with the groove depth of longitudinal very low power, the roughness of copper foil gradually decreases, the gradient with wetability gradual change, wetting
For the aerophily of the super close gas copper foil of property gradual change also by weakening by force, micropore is provided with the deeper one end of lateral very low power groove depth,
Copper foil surface after laser ablation forms the rough surface of micro-nano layering.Applied to it is underwater when, gas is by lateral very low power
The shallower one end of groove depth is mobile to deeper one end, eventually enters into micropore.
3, in super close-super thin gas copper foil preparation of wetability gradual change of the present invention, gradually by the superficial roughness with micropore
The copper foil of change is immersed in stearic acid ethanol solution, and copper foil surface forms stearic acid film after drying, obtains wetability gradual change
Super close gas copper foil, avris remove stearic acid film, obtain super close-super thin gas copper foil of wetability gradual change, remove stearic acid
The region of the super thin body gas of film is used for the adherency of separation gas and copper foil surface, makes the region of gas Xiang Chaoqin gas copper foil
It is mobile, the micropore of array-like arrangement under water can through gas barrier liquid；Wetability gradual change of the invention it is super close-super
Gas copper foil is dredged, there is orientation to transport underwater bubble, and expand the capture range of underwater bubble, removal stearic acid is thin
The underwater bubble of the super thin gas zones of film is finally also captured and collects.Along the direction of laser ablation line by line, lateral micro- ditch
The groove depth of slot and longitudinal very low power is gradually reduced, and the roughness of copper foil gradually decreases, the close gas in the super close gas region of copper foil
Property also by weakening by force, when super close gas zones of the underwater bubble coalescence in copper foil, underwater bubble is mobile to micropore, eventually passes through
Micropore enters gas collection container；When underwater bubble coalescence in remove stearic acid film region when, gas of the underwater bubble close to micropore
Bubble directly by micropore enters gas collection container, the bubble moving direction of separate micropore by removal stearic acid film region copper foil
The low region of roughness is mobile to the high region of roughness, gradually deviates to super close gas region in moving process, mobile to micropore,
It eventually passes through micropore and enters gas collection container, play orientation and transport underwater bubble；Wetability gradual change of the invention it is super close-super
The micropore for dredging the array-like arrangement of the super close gas zone of gas copper foil can be used for filtering gas, gas from micropore across copper foil into
Enter gas collection container, then enters in gas bottle from gas collection container；And the micropore of array-like arrangement is distributed in super close gas zones
The strong one end of aerophily has underwater close gas hydrophobicity, under water can through gas barrier liquid so that liquid will not be into
Enter gas collection container.
Invention is further described in detail with reference to the accompanying drawings and examples.
Detailed description of the invention
Fig. 1 is the laser ablation process schematic diagram for the super close gas copper foil that the embodiment of the present invention 1 prepares wetability gradual change.
Fig. 2 is the very low power of 1 laser ablation copper foil surface of the embodiment of the present invention and the scanning electron microscope (SEM) photograph of micropore.
Fig. 3 is relation schematic diagram of the water to the contact angle of solid and underwater air to the contact angle of solid in air.
Fig. 4 be 1 laser beam of the embodiment of the present invention pulse energy density and spot diameter and deviate focal plane distance Z tri-
Relation schematic diagram between person.
Fig. 5 is the schematic diagram of super close-super thin gas copper foil of the wetability gradual change of the embodiment of the present invention 2.
Fig. 6 is the Positioning collection device structural schematic diagram of the underwater bubble of the embodiment of the present invention 3.
Fig. 7 is the partial schematic diagram of the hanging hole of the Positioning collection device of the underwater bubble of the embodiment of the present invention 3.
Fig. 8 is that the underwater bubble of the embodiment of the present invention 3 is captured and is adhered to ultra-hydrophilic surface process schematic.
Fig. 9 is showing for the process for the micropore that the underwater bubble of the embodiment of the present invention 3 is arranged by the array-like of super close gas zone
It is intended to.
Description of symbols:
Super close-super thin gas copper foil of 1-wetability gradual change；2-gas collection containers；3-sealing rings；
4-metal retainer plates；5-hanging holes；6-counterweight pendants；
7-connectors；8-soft air-guide pipes；9-gas bottles；
Specific embodiment
Embodiment 1
The super close gas copper foil of the wetability gradual change of the present embodiment, the stearic acid including copper foil and setting on surfaces of the copper foil
Film, the ablated surface of the copper foil have a latticed very low power, and one end of copper foil offer it is multiple be arranged in array it is micro-
Hole, the very low power make the surface of copper foil form the rough surface of micro-nano layering, and the stearic acid film is covered on described thick
On rough surface, the very low power includes multiple lateral very low powers and multiple longitudinal very low powers, the lateral very low power and
The groove depth of longitudinal very low power is transversely gradually deepened, and the micropore is provided with deeper one of lateral very low power groove depth
End, transversely the aerophily of super close gas copper foil described in the direction of very low power groove depth reduction is by weakening by force；The thickness of the copper foil
For 0.1mm；The diameter of the micropore is 150 μm, and the spacing of adjacent cells is 1mm；The spacing of adjacent very low power is 85 μm, institute
State size 20nm~500nm of the micro-and nano-particles of rough surface.
The present embodiment additionally provides the preparation method of the super close gas copper foil of above-mentioned wetability gradual change, this method include with
Lower step:
Step 1: copper foil is successively cleaned 5min with ethanol solution and distilled water, then with 6min is dried with nitrogen, will clean
Copper foil side after drying is padded, and with horizontal plane at 1.3 ° of inclination angle, laser is focused from the side that copper foil and horizontal plane join
The other side ablation line by line of backward copper foil, forms multiple lateral very low powers, then further along the ablation by column of vertical direction, shape
At multiple longitudinal very low powers, it is horizontal and vertical intersect to form it is latticed, along the direction of laser ablation line by line, lateral micro- ditch
The groove depth of slot and longitudinal very low power is gradually reduced, and the roughness of copper foil surface gradually decreases, the copper foil table after laser ablation
Face forms the rough surface of micro-nano layering, obtains the copper foil of superficial roughness gradual change；The parameter of laser ablation very low power are as follows: arteries and veins
It washes off fibre laser (1064nm, 90kHz, 5ns), sweep span is 80 μm, scanning speed 5mm/s, light spot energy 7.5J/
cm2, spot diameter is 150 μm；
Step 2: the deeper one end of the lateral very low power groove depth of the copper foil of the superficial roughness gradual change obtained in step 1 is swashed
The multiple micropores of light ablation obtain the copper foil of the superficial roughness gradual change with micropore；The micropore is arranged in array on copper foil；
The parameter of ablation micropore are as follows: scanning speed 1mm/s, light spot energy 7.5J/cm2；
Step 3: the copper foil for the superficial roughness gradual change for obtaining step 2 to have micropore is 0.01mol/L's in concentration
60min is impregnated in stearic acid ethanol solution, after then drying under normal temperature conditions, copper foil surface forms stearic acid film, obtains
The super close gas copper foil of wetability gradual change.
By the copper foil one after cleaning drying in the step of preparing the super close gas copper foil of wetability gradual change in the present embodiment one
Side is padded, with horizontal plane at 1.3 ° of inclination angle, carries out laser ablation, as shown in Fig. 1 laser ablation process schematic diagram, laser is burnt
It is in turn divided into 3 regions after erosion, names are as follows: wettability gradient is presented in region 1, region 2 and region 3, copper foil surface, along sharp
The groove depth of the direction of light ablation line by line, lateral very low power and longitudinal very low power is gradually reduced, and the roughness of copper foil is gradually
It reduces.Copper foil after laser ablation carries out wetability detection after placing 5 days；Wetability detection method are as follows: take the distillation of 8 μ L every time
Then water measures static contact angle using static drip method respectively at drop in the surface in above three region, each region takes pair
Four points claimed are averaged after measuring.The result of measurement is that the contact angle in region 1, region 2 and region 3 is respectively
37.5 ° ± 1.2 °, 46.2 ° ± 1.3 ° and 86.7 ° ± 1.5 °, illustrate that the present invention is deposited after copper foil is padded with the surface of laser ablation
In wettability gradient.
Copper foil surface in the present embodiment during the super close gas copper foil of preparation wetability gradual change at laser ablation is formed
Very low power, micropore are arranged on copper foil at array-like, and the scanning electron microscope (SEM) photograph of the very low power of laser ablation copper foil surface and micropore is such as
Shown in Fig. 2, as seen from the figure, the very low power of laser ablation makes the surface of copper foil form the rough surface of micro-nano layering, micropore week
The micro-nano layered structure enclosed is more obvious.
The super close gas copper foil of wetability gradual change of the invention along laser ablation line by line direction, lateral very low power and
The groove depth of longitudinal very low power is gradually reduced, and the roughness of copper foil gradually decreases, the super close gas copper foil of wetability gradual change
For aerophily also by weakening by force, micropore is provided with the deeper one end of lateral very low power groove depth, and when being applied to underwater, gas is by transverse direction
The shallower one end of very low power groove depth it is mobile to deeper one end, eventually enter into micropore.
The characteristics of super close gas copper foil of wetability gradual change of the invention:
(1) laser processing copper foil forms the rough surface of latticed micro-nano layering
Laser Micro-Machining is one of the effective ways for obtaining variety classes micro-structure on the surface of the material.Since ultrashort pulse is wide
The unique property of degree and very high peak intensities, femtosecond laser parallel micromachining have many advantages, can handle a variety of materials, including half
Conductor, fragile material (such as glass), metal, polymer, ceramics and biomaterial etc..Copper is that mankind's discovery is also most easily purified earliest
One of common metal, it is cheap, there is good toughness, corrosion resistance, ductility, thermal conductivity and electric conductivity, it is wide
The general various aspects applied to industrial or agricultural.Laser ablation copper foil surface can be processed the coarse structure of micro-and nano-particles layering, makes it
With super-hydrophobicity or Superhydrophilic.It is super hydrophilic, 2-8 in exposure air in the copper foil surface short time after laser ablation
Week, can slowly from it is super hydrophilic be changed into it is hydrophobic or super-hydrophobic.Super hydrophobic surface in air has the spy of underwater super close gas
Point, as shown in figure 3, water is to the static contact angle θ w of the surface of solids and underwater air to the static contact angle of the surface of solids in air
Between θ b, theoretically complementary relationship.Super hydrophobic surface in air is underwater super close gas meter face, and super in air
Water-wetted surface is underwater super thin gas meter face.
(2) principle of the copper foil of wetability gradual change is laser machined
The material surface of wetability gradual change has the function of directional collecting bubble, can be used for controlling underwater or bubble in liquid
Directed movement, wettability gradient is divided into two classes, including surface chemistry or physics gradient.Chemical gradient is mainly by original
It is coated on material or deposits thin chemical layer and formed；Physics gradient is the pattern or coarse of upper processing gradual change on the surface of the material
Degree, laser ablation can improve material surface roughness, and compared with chemical method, laser ablation is a kind of low waste, single stage
Program, processing speed is high, and laser ablation can control surface roughness or wetability without coating directly on original material.
The present invention is padded by one end of copper foil, and laser processing face is made in the horizontal plane, not obtain certain structure ladder by laser ablation
Degree, the energy of laser beam are Gaussian Profile, pulse energy density and spot diameter and the deviation focal plane distance Z of laser beam
Relationship between three as shown in figure 4, laser beam focus copper foil side (one of copper foil and horizontal plane handover after padded
Side), as focal plane, the spot diameter on focal plane is minimum, and the pulse energy density of laser beam is maximum, therefore after laser ablation
The roughness in copper foil surface region is maximum, and as the distance Z that copper foil surface is gradually deviated from focal plane is gradually increased, spot diameter
Become larger, the pulse energy density of laser in substantially attenuation state, therefore the roughness in the copper foil surface region after laser ablation also with
Reduction, the result that copper foil surface is gradually deviated from focal plane make copper foil surface formed roughness grade, show wetability gradually
The gradient of change, this plays a decisive role to the directed flow of water in control air and the displacement of underwater bubble.
(3) low-surface-energy drops in stearic acid
Be in the copper foil short time after laser ablation it is super hydrophilic, the surface of copper foil can be reduced by being impregnated with stearic acid solution
Can, realize the wettability reversal in the short time.The contact angle of copper foil surface water is in region 1 by 2 ° before impregnating after stearic acid soak
Become 164 °, and the contact angle of underwater bubble becomes about 5 ° ± 2 ° from original 158 ° ± 1.2 °.
Copper foil after laser ablation of the present invention is dried to 20min under normal temperature conditions after perstearic acid alcohol solution dipping
Afterwards, its underwater gas is surveyed to the contact angle of copper foil surface.Using small size syringe, the gas of 3 μ L is taken every time, after being directed at laser ablation
3 region surfaces of wetability gradual change of copper foil injected, observe its gas in 3 regions (region 1, region 2 of Fig. 1
With region 3) absorption situation, it can be seen that gas scatters in 3 regions quickly, finally melts together, and form thin layer of air,
Illustrate the aerophily in 3 regions.
Embodiment 2
Super close-super thin gas copper foil of the wetability gradual change of the present embodiment, the super close gas copper foil including wetability gradual change,
The avris removal stearic acid film on the surface of the super close gas copper foil forms super close-super thin gas copper foil of wetability gradual change；
The super close gas copper foil of the wetability gradual change includes the stearic acid film of copper foil and setting on surfaces of the copper foil, the copper foil
Ablated surface has latticed very low power, and one end of copper foil offers multiple micropores being arranged in array, and the very low power makes
The surface of copper foil forms the rough surface of micro-nano layering, and the stearic acid film is covered on the rough surface, described micro-
Groove includes multiple lateral very low powers and multiple longitudinal very low powers, the slot of the lateral very low power and longitudinal very low power
Depth is transversely gradually deepened, and the micropore is provided with the deeper one end of lateral very low power groove depth, transversely very low power slot
The aerophily of super close gas copper foil is by weakening by force described in the direction reduced deeply；The copper foil with a thickness of 0.1mm；The micropore
Diameter is 100 μm, and the spacing of adjacent cells is 1mm；The spacing of adjacent very low power is 70 μm, the rough surface it is micro-nano
The size of particle is 20nm~500nm.
The present embodiment additionally provides the preparation method of super close-super thin gas copper foil of above-mentioned wetability gradual change, this method
The following steps are included:
Step 1: copper foil is successively cleaned into 10min with ethanol solution and distilled water, it, will be clear then with 4min is dried with nitrogen
Copper foil side after washing drying is padded, and with horizontal plane at 3 ° of inclination angle, laser is focused from the side that copper foil and horizontal plane join
The other side ablation line by line of backward copper foil, forms multiple lateral very low powers, then further along the ablation by column of vertical direction, shape
At multiple longitudinal very low powers, it is horizontal and vertical intersect to form it is latticed, along the direction of laser ablation line by line, lateral micro- ditch
The groove depth of slot and longitudinal very low power is gradually reduced, and the roughness of copper foil surface gradually decreases, the copper foil table after laser ablation
Face forms the rough surface of micro-nano layering, obtains the copper foil of superficial roughness gradual change；The parameter of laser ablation very low power is the same as real
Apply example 1；
Step 2: the deeper one end of the lateral very low power groove depth of the copper foil of the superficial roughness gradual change obtained in step 1 is swashed
The multiple micropores of light ablation obtain the copper foil of the superficial roughness gradual change with micropore；The micropore is arranged in array on copper foil；
The parameter of ablation micropore are as follows: scanning speed 1mm/s, light spot energy 7.5J/cm2；
Step 3: the copper foil for the superficial roughness gradual change for obtaining step 2 to have micropore is 0.05mol/L's in concentration
45min is impregnated in stearic acid ethanol solution, after then drying under normal temperature conditions, copper foil surface forms stearic acid film, obtains
The super close gas copper foil of wetability gradual change；
Step 4: the super close gas copper foil for the wetability gradual change that step 3 is obtained carries out laser ablation, the profit is removed
The stearic acid film of the super close gas copper foil avris of moist gradual change obtains super close-super thin gas copper foil of wetability gradual change；Laser
The detailed process of ablation selective removal stearic acid film are as follows: by controlling the graphical interfaces of computer software, design needs to remove
The figure of stearic acid film；Then laser sequentially carries out ablation by column again after ablation line by line, and scanning grid spacing is 30 μm, laser
Energy density is 1.21J/cm2, and scanning speed 1000mm/s, scanning times are 3 times.
The schematic diagram of super close-super thin gas copper foil of wetability gradual change manufactured in the present embodiment is as shown in figure 5, A is super
The copper foil surface of close gas zone, super close gas zone has stearic acid film, and C is micropore, is arranged in array in the area Chao Qinqi, B is
Super thin gas zone, this region laser ablation fall stearic acid film, and D is the very low power that the copper foil surface of laser ablation is formed, laser
The direction of ablation is the aerophily of the copper foil for the direction gas zone Chao Qin that very low power groove depth transversely reduces from left to right line by line
By weakening by force.
Super thin gas gas area is used for the adherency of separation gas and copper foil surface, keeps the gas zone gas Xiang Chaoqin mobile, and
The micropore of the array-like arrangement of super close gas zone under water can through gas barrier liquid.The wetability gradual change of the present embodiment
Super close-super thin gas copper foil there is wetability gradually changeable, there is orientation to transport underwater bubble, and expand underwater gas
The capture range of bubble, the underwater bubble of super thin gas zone are finally also captured and collect.Along the direction of laser ablation line by line, laterally
Very low power and the groove depth of longitudinal very low power be gradually reduced, the roughness of copper foil gradually decreases, the copper foil of super close gas zone
Aerophily also by weakening by force, micropore micropore is provided with the deeper one end of lateral very low power groove depth, that is, be located at super close gas zone
The strong region of aerophily.When the underwater gas zone bubble coalescence Yu Chaoqin, underwater bubble is mobile to micropore, eventually passes through micropore
Into gas collection container；When underwater bubble coalescence is when super thin gas zone, the underwater bubble of super thin gas zone is leaned on due to turbulent flow
The bubble of nearly micropore directly passes through micropore and enters gas collection container, and the bubble moving direction far from micropore is by the coarse of super thin gas zone
It is mobile to the high region of roughness to spend low region, is gradually deviated to the area Chao Qinqi in moving process, it is mobile to micropore, finally wear
It crosses micropore and enters gas collection container, orientation can be played and transport underwater bubble；Wetability gradual change of the invention it is super close-super
The micropore for dredging the array-like arrangement of the super close gas zone of gas copper foil can be used for filtering gas, gas from micropore across copper foil into
Enter gas collection container, then enters in gas bottle from gas collection container；And the micropore of array-like arrangement is distributed in the parent of super close gas zone
The strong one end of gas has underwater close gas hydrophobicity, under water can through gas barrier liquid so that liquid will not enter
Gas collection container.
Embodiment 3
Super close-super thin gas copper foil of the wetability gradual change of the present embodiment is constructed with embodiment 2；The thickness of the copper foil
For 0.1mm；The diameter of the micropore is 200 μm, and the spacing of adjacent cells is 1mm；The spacing of adjacent very low power is 100 μm,
The size of the micro-and nano-particles of the rough surface is 20nm~500nm.
The present embodiment additionally provides the preparation method of super close-super thin gas copper foil of above-mentioned wetability gradual change, this method
The following steps are included:
Step 1: copper foil is successively cleaned into 15min with ethanol solution and distilled water, it, will be clear then with 6min is dried with nitrogen
Copper foil side after washing drying is padded, and with horizontal plane at 1 ° of inclination angle, laser is focused from the side that copper foil and horizontal plane join
The other side ablation line by line of backward copper foil, forms multiple lateral very low powers, then further along the ablation by column of vertical direction, shape
At multiple longitudinal very low powers, it is horizontal and vertical intersect to form it is latticed, along the direction of laser ablation line by line, lateral micro- ditch
The groove depth of slot and longitudinal very low power is gradually reduced, and the roughness of copper foil surface gradually decreases, the copper foil table after laser ablation
Face forms the rough surface of micro-nano layering, obtains the copper foil of superficial roughness gradual change；The parameter of laser ablation very low power is the same as real
Apply example 1；
Step 2: the deeper one end of the lateral very low power groove depth of the copper foil of the superficial roughness gradual change obtained in step 1 is swashed
The multiple micropores of light ablation obtain the copper foil of the superficial roughness gradual change with micropore；The micropore is arranged in array on copper foil；
The parameter of ablation micropore is the same as embodiment 1；
Step 3: the copper foil for the superficial roughness gradual change for obtaining step 2 to have micropore is the hard of 0.1mol/L in concentration
30min is impregnated in resin acid ethanol solution, after then drying under normal temperature conditions, copper foil surface forms stearic acid film, is moistened
The super close gas copper foil of moist gradual change.
Step 4: the super close gas copper foil for the wetability gradual change that step 3 is obtained carries out laser ablation, the profit is removed
The stearic acid film of the super close gas copper foil avris of moist gradual change obtains super close-super thin gas copper foil of wetability gradual change；Laser
Ablation removes avris stearic acid thin film parameter with embodiment 2.
Super close-super thin gas copper foil of the wetability gradual change of the present embodiment is applied to the Positioning collection device of underwater bubble,
The Positioning collection device as shown in fig. 6-7, super close-super thin gas copper foil 1 including wetability gradual change, 2 sum aggregate of gas collection container
The bottom open-mouth of gas collection container 2 is arranged in gas cylinder 9, super close-super thin gas copper foil 1 of the wetability gradual change, and wetability is gradually
Super close-super thin gas of super close-super thin gas copper foil 1 become is arranged downwards, 3 sets of the sealing ring bottoms in gas collection container 2
On outer wall, super close-super thin gas copper foil 1 and gas collection container 2 of wetability gradual change are locked, it is solid that the outside of sealing ring 3 is cased with metal
Surely 4 are enclosed, the side of metal retainer plate 4 is uniformly provided with multiple hanging holes 5, and counterweight pendant 6 is hung on the hanging hole 5, and gas collection holds
The top of device 2 is connect by connector 7 with soft air-guide pipe 8, and the soft air-guide pipe 8 protrudes into gas bottle 9.
The Positioning collection device of underwater bubble is immersed in the water, it can be seen that gas rises as bubbles the super of wetability gradual change
The super close gas zones on parent-super thin gas copper foil surface, bubble to super close-super thin gas copper foil of wetability gradual change are mobile,
Super close gas zones are gathered, orientation transports underwater bubble, and bubble passes through super close-super thin gas copper foil of wetability gradual change, no
Disconnected to have bubble to emerge, final gas enters gas collection container from the micropore that array-like is arranged, and is collected into gas collection by soft air-guide pipe
In bottle, the micropore number of the present embodiment is 30, and the amount for collecting gas reaches 280cm3/min。
Super close-super thin gas copper foil of wetability gradual change of the invention has super close gas zones and super thin gas zones,
It is able to achieve the selective attachment of bubble.When super close-super thin gas copper foil of wetability gradual change is immersed in the water, air layer is by surrounding liquid
Body is trapped near the super close gas zone of super close-super thin gas copper foil of wetability gradual change and the micropore of array-like arrangement.Underwater gas
Bubble is captured and is adhered to ultra-hydrophilic surface process as shown in figure 8, contacting underwater wetability gradually when bubble rises in water
When the surface of super close-super thin gas copper foil become, it is initially formed the air/water/Air Interface on a convex surface, due to the position of bubble
It is random for setting, and some bubbles may directly rise to the air layer for being trapped in the copper foil surface of super close gas zone, then with
Air layer combines, and during this, moisture film is thinning, and the damping of moisture film eventually results in air bubble and enters air film and assemble,
This is referred to as " bubble eruption " effect ".As shown in Fig. 8 (a).In addition, some bubbles may rise to the copper foil of super thin gas zone
Surface, since the bubble of rising causes the inclination and turbulent flow of copper foil, the bubble contacted with the copper foil surface of super thin gas zone is driven
It moves and rolls, be then combined in the air layer for being trapped in the copper foil surface of super close gas zone, as shown in Fig. 8 (b), this is just formed
The positioning of underwater bubble eventually leads to bubble and is captured and be gathered in super close gas zone and form gas blanket, when gas is in array
After sufficiently gathering in the micropore of shape arrangement, the pressure being stranded in gas blanket is sufficiently high, so that gas passes through from micropore, in copper foil
Upper surface forms gas protrusion.With the increase of upper surface gas expansion amount, by the driving of buoyancy, bubble eventually leaves copper foil
Surface and rise, finally be detached from the water surface get into the air and be collected.The schematic diagram for the micropore that bubble is arranged by array-like is such as
Shown in Fig. 9, the micropore of array-like arrangement under water can through gas barrier liquid, be the core of underwater gas collection
Part.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way.It is all according to invention skill
Art any simple modification, change and equivalence change substantially to the above embodiments, still fall within technical solution of the present invention
Protection scope in.
Claims (10)
1. a kind of super close gas copper foil of wetability gradual change, it is characterised in that: including copper foil and setting on surfaces of the copper foil hard
Resin acid film, the ablated surface of the copper foil has latticed very low power, and one end of copper foil offers multiple be arranged in array
Micropore, the very low power makes the surface of copper foil form the rough surface of micro-nano layering, and the stearic acid film is covered on institute
It states on rough surface, the very low power includes multiple lateral very low powers and multiple longitudinal very low powers, lateral micro- ditch
The groove depth of slot and longitudinal very low power is transversely gradually deepened, and it is deeper that the micropore is provided with lateral very low power groove depth
One end, transversely the aerophily of super close gas copper foil described in the direction of very low power groove depth reduction is by weakening by force.
2. a kind of super close gas copper foil of wetability gradual change according to claim 1, which is characterized in that the micropore it is straight
Diameter is 100 μm~200 μm, and the spacing of adjacent cells is 1mm；The spacing of adjacent very low power is 70 μm~100 μm, described coarse
The size of the micro-and nano-particles on surface is 20nm~500nm.
3. a kind of super close-super thin gas copper foil of wetability gradual change, it is characterised in that: the super close gas copper including wetability gradual change
Foil, the avris removal stearic acid film on the surface of the super close gas copper foil form super close-super thin gas copper of wetability gradual change
Foil.
4. a kind of preparation method of the super close gas copper foil of wetability gradual change as claimed in claim 1 or 2, which is characterized in that
Method includes the following steps:
Step 1: copper foil is successively cleaned with ethanol solution and distilled water, then with being dried with nitrogen, by the copper foil after cleaning drying
Side is padded, and laser, to the ablation line by line of the other side of copper foil, forms multiple cross after the side focusing that copper foil and horizontal plane join
To very low power form multiple longitudinal very low powers, horizontal and vertical X-shape then further along the ablation by column of vertical direction
At latticed, along the direction of laser ablation line by line, the groove depth of lateral very low power and longitudinal very low power is gradually reduced, copper
The roughness on foil surface gradually decreases, and the copper foil surface after laser ablation forms the rough surface of micro-nano layering, obtains surface
The copper foil of roughening gradual change；
Step 2: the deeper one end laser of the lateral very low power groove depth of the copper foil of the superficial roughness gradual change obtained in step 1 is burnt
Multiple micropores are lost, the copper foil of the superficial roughness gradual change with micropore is obtained；The micropore is arranged in array on copper foil；
Step 3: the copper foil for the superficial roughness gradual change that step 2 obtains having micropore is immersed in stearic acid ethanol solution,
Then after drying under normal temperature conditions, copper foil surface forms stearic acid film, obtains the super close gas copper foil of wetability gradual change.
5. according to the method described in claim 4, it is characterized in that, the padded angle of copper foil side described in step 1 be 1 °~
3°。
6. according to the method described in claim 4, it is characterized in that, the time cleaned in step 1 is 5min~15min, nitrogen
The air-blowing dry time is 2min~6min.
7. according to the method described in claim 4, it is characterized in that, being in the concentration of stearic acid ethanol solution in step 3
0.01mol/L~0.1mol/L, the time of immersion are 30min~60min.
8. according to the method described in claim 4, it is characterized in that, the time dry in step 3 is 5min~20min.
9. a kind of preparation method of super close-super thin gas copper foil of wetability gradual change as claimed in claim 3, feature exist
In this method are as follows: carry out laser ablation to the super close gas copper foil of the wetability gradual change prepared using claim 4, remove institute
The stearic acid film for stating the super close gas copper foil avris of wetability gradual change obtains super close-super thin gas copper foil of wetability gradual change.
10. a kind of Positioning collection device of underwater bubble, which is characterized in that super close-super thin gas copper including wetability gradual change
Super close-super thin gas copper foil (1) setting of foil (1), gas collection container (2) and gas bottle (9), the wetability gradual change is held in gas collection
Super close-super thin gas of the bottom open-mouth of device (2), super close-super thin gas copper foil (1) of wetability gradual change is arranged downwards,
Sealing ring (3) covers on the outer wall of the bottom of gas collection container (2), lock wetability gradual change super close-super thin gas copper foil (1) and
Gas collection container (2) is cased with metal retainer plate (4) on the outside of sealing ring (3), and the side of metal retainer plate (4) is uniformly provided with more
A hanging hole (5) is hung with counterweight pendant (6) on the hanging hole (5), and the top of gas collection container (2) passes through connector (7) and air guide
Hose (8) connection, the soft air-guide pipe (8) are protruded into gas bottle (9).
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110251999A (en) * | 2019-05-15 | 2019-09-20 | 中国计量大学 | The method of super-hydrophobic track regulation bubble splitting in plane |
| CN110255488A (en) * | 2019-07-02 | 2019-09-20 | 合肥工业大学 | A kind of alternative device and its application captured or repel underwater bubble |
| CN110255654A (en) * | 2019-05-15 | 2019-09-20 | 中国计量大学 | The control method that bubble floats along straight line in a kind of water body |
| CN110817294A (en) * | 2019-10-31 | 2020-02-21 | 浙江工业大学 | Conical spiral bubble conveying device and preparation method thereof |
| CN111299869A (en) * | 2019-11-26 | 2020-06-19 | 湖北工业大学 | Gradient hydrophilic cutting fluid Al processed by femtosecond laser2O3Method for ceramic cutting tool |
| CN114797685A (en) * | 2022-05-10 | 2022-07-29 | 清华大学 | Method for generating bubbles on surface of hydrophilic material |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102608273A (en) * | 2012-03-23 | 2012-07-25 | 重庆大学 | Method for collecting underwater bubbles and method for monitoring underwater bubble flux under hydrodynamic conditions |
| CN104225964A (en) * | 2014-09-17 | 2014-12-24 | 清华大学 | Microfluidic bubble removal device and preparation method thereof as well as microfluidic device |
| US20150130996A1 (en) * | 2013-11-12 | 2015-05-14 | Samsung Electronics Co., Ltd. | Micro electric liquid device and apparatus including the same |
| CN105536895A (en) * | 2015-12-10 | 2016-05-04 | 武汉纺织大学 | Openable micro-fluidic chip and preparation method thereof |
| CN106892399A (en) * | 2015-12-21 | 2017-06-27 | 华中科技大学 | A kind of bionical moisture condensation and collection structure and preparation method thereof |
| CN107914079A (en) * | 2017-11-14 | 2018-04-17 | 厦门大学 | A kind of anti-corrosion reinforced aluminium magnesium alloy preparation method of new pattern laser processing |
| CN108816702A (en) * | 2018-06-28 | 2018-11-16 | 清华大学 | A kind of driving catchment surface and preparation method certainly with super thin-super hydrophilic structure |
-
2018
- 2018-12-28 CN CN201811621076.0A patent/CN109701298B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102608273A (en) * | 2012-03-23 | 2012-07-25 | 重庆大学 | Method for collecting underwater bubbles and method for monitoring underwater bubble flux under hydrodynamic conditions |
| US20150130996A1 (en) * | 2013-11-12 | 2015-05-14 | Samsung Electronics Co., Ltd. | Micro electric liquid device and apparatus including the same |
| CN104225964A (en) * | 2014-09-17 | 2014-12-24 | 清华大学 | Microfluidic bubble removal device and preparation method thereof as well as microfluidic device |
| CN105536895A (en) * | 2015-12-10 | 2016-05-04 | 武汉纺织大学 | Openable micro-fluidic chip and preparation method thereof |
| CN106892399A (en) * | 2015-12-21 | 2017-06-27 | 华中科技大学 | A kind of bionical moisture condensation and collection structure and preparation method thereof |
| CN107914079A (en) * | 2017-11-14 | 2018-04-17 | 厦门大学 | A kind of anti-corrosion reinforced aluminium magnesium alloy preparation method of new pattern laser processing |
| CN108816702A (en) * | 2018-06-28 | 2018-11-16 | 清华大学 | A kind of driving catchment surface and preparation method certainly with super thin-super hydrophilic structure |
Non-Patent Citations (2)
| Title |
|---|
| 于娟: "微尺度结构表面上润湿性诱导的液体流动", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
| 李保家: "仿生周期微结构表面设计制备及其润湿性能研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110251999A (en) * | 2019-05-15 | 2019-09-20 | 中国计量大学 | The method of super-hydrophobic track regulation bubble splitting in plane |
| CN110255654A (en) * | 2019-05-15 | 2019-09-20 | 中国计量大学 | The control method that bubble floats along straight line in a kind of water body |
| CN110255654B (en) * | 2019-05-15 | 2022-09-06 | 中国计量大学 | Control method for floating bubbles in water body along straight line |
| CN110255488A (en) * | 2019-07-02 | 2019-09-20 | 合肥工业大学 | A kind of alternative device and its application captured or repel underwater bubble |
| CN110817294A (en) * | 2019-10-31 | 2020-02-21 | 浙江工业大学 | Conical spiral bubble conveying device and preparation method thereof |
| CN111299869A (en) * | 2019-11-26 | 2020-06-19 | 湖北工业大学 | Gradient hydrophilic cutting fluid Al processed by femtosecond laser2O3Method for ceramic cutting tool |
| CN114797685A (en) * | 2022-05-10 | 2022-07-29 | 清华大学 | Method for generating bubbles on surface of hydrophilic material |
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