CN111776252A - Laval nozzle structure-imitated guide plate functional surface and manufacturing method thereof - Google Patents
Laval nozzle structure-imitated guide plate functional surface and manufacturing method thereof Download PDFInfo
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- CN111776252A CN111776252A CN202010640271.9A CN202010640271A CN111776252A CN 111776252 A CN111776252 A CN 111776252A CN 202010640271 A CN202010640271 A CN 202010640271A CN 111776252 A CN111776252 A CN 111776252A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000003491 array Methods 0.000 claims abstract description 8
- 230000003075 superhydrophobic effect Effects 0.000 claims abstract description 8
- 229920002120 photoresistant polymer Polymers 0.000 claims description 27
- 239000011248 coating agent Substances 0.000 claims description 14
- 238000000576 coating method Methods 0.000 claims description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- 238000007747 plating Methods 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 238000009713 electroplating Methods 0.000 claims description 7
- XPBBUZJBQWWFFJ-UHFFFAOYSA-N fluorosilane Chemical compound [SiH3]F XPBBUZJBQWWFFJ-UHFFFAOYSA-N 0.000 claims description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 238000004528 spin coating Methods 0.000 claims description 5
- 239000000243 solution Substances 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000003487 electrochemical reaction Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 abstract description 19
- 239000003380 propellant Substances 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 8
- 238000005457 optimization Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
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- 230000002159 abnormal effect Effects 0.000 description 1
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- 229910052786 argon Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
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- 230000005486 microgravity Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/40—Arrangements or adaptations of propulsion systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/02—Electroplating of selected surface areas
- C25D5/022—Electroplating of selected surface areas using masking means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2518/00—Other type of polymers
- B05D2518/10—Silicon-containing polymers
Abstract
The invention discloses a function surface of a guide plate with an imitated Laval nozzle structure and a manufacturing method thereof, wherein the surface of the guide plate is a super-hydrophilic surface, and a plurality of guide arrays are uniformly arranged on the surface of the guide plate; the guide array comprises a plurality of structural units with super-hydrophobic surfaces, is in a Laval nozzle cross section shape, and gradually widens from narrow to wide and then gradually narrows from wide in the flow guide direction of the flow guide plate. The invention has the characteristics of guiding and positioning, can strengthen the surface tension flow process and comprehensively improves the propellant supply efficiency of the surface tension storage tank.
Description
Technical Field
The invention relates to the field of plate-type surface tension storage tank propellant management, in particular to a guide plate functional surface with a simulated Laval nozzle structure and a manufacturing method thereof.
Background
The storage tank of the spacecraft is an important device for storing and managing the propellant, the propellant is required to be effectively provided in the whole task period, and the storage, transmission and positioning characteristics of the propellant in the storage tank play a decisive role in the orbital maneuvering capability and service life of the spacecraft. A panel surface tension tank is a typical tank structure, the key component of which is the Propellant Management Device (PMD). Generally, the PMD is mainly composed of components such as a deflector, a central support column, a reservoir and the like, has the advantages of simple management mode, high reliability, long service life and the like, and is widely applied to tasks of multiple models abroad.
From the propulsion principle, the plate-type surface tension storage tank realizes the automatic supply of the propellant by taking a guide plate as a flow path and taking the surface tension of the liquid as a driving force, and the metal guide plate is the core part of the storage tank. The traditional surface tension plate-type storage tank does not treat the surface of the metal guide plate, under the condition of space weightlessness, when a satellite is disturbed by the outside (vibration, impact, speed fluctuation and the like), the flow process of a propellant in the storage tank becomes abnormal and complex, the supply of the propellant cannot be effectively guaranteed, the propulsion efficiency is reduced by a light person, the power failure and the service capacity loss of a spacecraft are caused by a heavy person, and the development of the plate-type surface tension is restricted by the shortage of surface function development. In addition, in the existing plate-type surface tension storage tank, water is easily accumulated at the joint of the guide plate and the tank body.
Disclosure of Invention
The invention aims to solve the technical problem of providing a baffle functional surface of an imitated Laval nozzle structure and a manufacturing method thereof aiming at the defects related in the background technology.
The invention adopts the following technical scheme for solving the technical problems:
a guide plate functional surface of an imitated Laval nozzle structure comprises a surface of a guide plate and a plurality of guide arrays which are uniformly arranged on the surface of the guide plate;
the surface of the guide plate is a super-hydrophilic surface;
the guide array comprises a plurality of uniformly arranged structural units with super-hydrophobic surfaces on the surfaces;
the surface of the guide plate between the adjacent guide arrays vertical to the flow guide direction of the guide plate is in a Laval nozzle cross section shape, and the cross section of the guide plate is gradually narrowed from the width to the width in the flow guide direction of the guide plate.
In the guide array, the surface of the guide plate between the adjacent structural units vertical to the flow guide direction of the guide plate is in a Laval nozzle cross-sectional shape, and the surface of the guide plate gradually narrows from wide to narrow and then gradually widens from narrow to narrow in the flow guide direction of the guide plate.
The invention also discloses a manufacturing method of the functional surface of the guide plate with the simulated Laval nozzle structure, which comprises the following steps:
step 1), pretreatment: grinding and polishing the TC4 guide plate until the roughness Ra is smaller than a preset roughness threshold value, and sequentially performing ultrasonic cleaning by using acetone and alcohol to remove surface impurities so that the surface of the TC4 guide plate becomes a super-hydrophilic surface;
step 2), carrying out mask processing on the surface of the TC4 flow guide plate:
step 2.1), coating the photoresist on the surface of a TC4 flow guide plate by adopting a two-stage rotating speed-spin coating method;
step 2.2), closely attaching the mask plates engraved with the guide array shapes to a TC4 guide plate with a photoresist film, exposing by using an ultraviolet exposure machine, then developing and cleaning the guide plate, and finally placing the sample in an oven to be heated for a preset time threshold;
step 3), fine electroplating, namely plating a metal part which is not covered by the photoresist on the surface of the guide plate by using current:
connecting a TC4 flow guide plate with a photoresist mask with a power supply anode, connecting an electrolytic nickel plate with a power supply cathode, switching on the power supply to enable the anode to generate electrochemical reaction, plating a plating layer on a metal part which is not covered by the photoresist, and further forming each guide array on the surface of the flow guide plate;
step 4), coating the functional coating, preparing a fluorosilane aqueous solution, immersing a TC4 flow guide plate into the prepared solution to coat the low-surface-energy fluorosilane on the electroplated microstructure, and then drying and curing to enable the surface of the coating structure to be a super-hydrophobic surface;
and 5) removing the photoresist on the surface of the TC4 guide plate.
As a further optimization scheme of the manufacturing method of the functional surface of the guide plate with the simulated Laval nozzle structure, the specific parameters of coating the photoresist on the surface of the TC4 guide plate by adopting a two-stage rotating speed-spin coating method in the step 2.1) are as follows:
the first-stage rotation speed is 800rpm, the time is 20s, the second-stage rotation speed is 2000rpm, the time is 40s, the photoresist film with the thickness of about 10 mu m is obtained, and the photoresist film is dried for 20min at the temperature of 90 ℃.
As a further optimization scheme of the manufacturing method of the functional surface of the guide plate with the simulated Laval nozzle structure, the roughness threshold value preset in the step 1) is 0.4 mu m.
As a further optimization scheme of the manufacturing method of the function surface of the guide plate with the simulated Laval nozzle structure, the preset time threshold in the step 2.2) is 30 min.
As a further optimization scheme of the manufacturing method of the function surface of the guide plate of the simulated Laval nozzle structure, the purity of the electrolytic nickel plate in the step 3) is 99.8%, the area ratio of the cathode to the anode is about 1:2, and the inter-polar distance is 30 mm.
As a further optimization scheme of the manufacturing method of the function surface of the guide plate with the simulated Laval nozzle structure, an Array 3645A constant-voltage constant-current power supply and an 85-2 constant-temperature magnetic stirrer are adopted when micro electroplating is carried out in the step 3), the pH value is 4 +/-0.2, the temperature is 45 ℃, and the current density is 0.5A/dm2To 1.25A/dm2The time period was 2 hours.
Compared with the prior art, the invention adopting the technical scheme has the following technical effects:
compared with the prior art, the invention obviously improves the flow guide performance of the storage tank, obviously improves the working efficiency of the flow guide plate, easily solves the problem that water is easy to accumulate at the joint of the flow guide plate and the tank body, meets the propulsion requirements of nano, pico and nano-micron spacecraft, the low-electricity requirements and the like, and effectively controls the problems of newly increased volume, structure and the like in the optimization process because the structure is optimized on the basis of the original flow guide plate. The invention utilizes the array structure of the function surface of the guide plate and the coating to effectively optimize the propellant management capacity of the propellant storage tank, improves the discharge efficiency of the storage tank, improves the propellant utilization rate of a propulsion system and provides technical support for the design of a new generation of plate-type surface tension storage tank.
Drawings
FIG. 1 is a schematic cross-sectional view of a tank;
FIG. 2 is a schematic distribution of baffles;
FIG. 3 is a schematic structural diagram of a steering array;
fig. 4 is a schematic view of the structure of the guide array on the surface of the guide plate.
In the figure, 1-gas port, 2-guide plate, 3-lower half box body, 4-functional surface of guide plate, 5-liquid port and 6-upper half box body.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the attached drawings:
the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, components are exaggerated for clarity.
The invention discloses a guide plate functional surface of an imitated Laval nozzle structure, which comprises a guide plate surface and a plurality of guide arrays uniformly arranged on the guide plate surface;
the surface of the guide plate is a super-hydrophilic surface;
the guide array comprises a plurality of uniformly arranged structural units with super-hydrophobic surfaces on the surfaces;
the surface of the guide plate between the adjacent guide arrays vertical to the flow guide direction of the guide plate is in a Laval nozzle cross section shape, and the cross section of the guide plate is gradually narrowed from the width to the width in the flow guide direction of the guide plate.
In the guide array, the surface of the guide plate between the adjacent structural units vertical to the flow guide direction of the guide plate is in a Laval nozzle cross section shape, and the guide plate gradually narrows from wide to narrow and then gradually widens from narrow in the flow guide direction of the guide plate.
The invention realizes the automatic supply of the propellant by using the guide array of the functional surface of the guide plate and the coating; the guide array on the surface of the flow guide plate realizes the directional guide function of liquid through the micro/nano scale surface; the surface of the guide plate is hydrophilic, and an electroplated layer is added to make the array structure hydrophobic; the propellant in the storage tank can spontaneously flow along the guide array on the surface of the guide plate under the action of surface tension in a space environment.
As shown in figure 1, the storage tank consists of an air port, a flow guide plate, a lower half tank body, a functional surface, a liquid port and an upper half tank body, wherein the air port and the upper half tank body, the liquid port and the lower half tank body, and the lower half tank body and the upper half tank body are welded by argon arc welding, the lower half tank body and the upper half tank body adopt an arc transition structure, the thickness of the arc transition structure is 10mm, the functional surface is carved on the surface of the flow guide plate, and one side of five flow guide plates is welded with the inner wall of the upper tank body.
The distribution of the guide plates of the invention is shown in figure 2, five guide plates are uniformly distributed, and the included angle between two adjacent guide plates is 72 degrees.
The guide plate material of the invention adopts TC4, the photoetching micro-electrolysis technology is adopted, the functional surface is carved on the surface of the guide plate, and the guide array on the functional surface is shown in figure 3.
The functional surface coating is an hydrophilic-hydrophobic structure, combines the microstructure geometry and the characteristic dimension of a guide array, and utilizes the micro-scale effect of surface tension and hydrophobicity and the property of driving liquid to rapidly climb in space by slight disturbance so as to provide the stress required by propulsion, as shown in figure 4.
Fig. 3 is a schematic view of an arrangement of guide arrays on the functional surface of a baffle. The shape of the guide array is similar to the cross section of a Laval nozzle, the structural units of the guide array are super-hydrophilic extreme infiltration interfaces, and the surfaces of the guide plates between the structural units are electroplated layers of the super-hydrophobic extreme infiltration interfaces. Length range of bottom edge of electroplating unit: 20~100 um, 40~100 um, high 10um, the area rate of direction array on the functional surface is 50~ 80%.
The invention also discloses a manufacturing method of the functional surface of the guide plate with the simulated Laval nozzle structure, which comprises the following steps:
step 1), pretreatment. And (3) grinding and polishing the TC4 guide plate until the roughness Ra is less than 0.4 mu m, and then carrying out ultrasonic cleaning by respectively adopting acetone and alcohol for 10min to remove surface impurities so as to enable the surface of the TC4 guide plate to be a super-hydrophilic surface.
And 2) photoetching (gluing, exposing and developing). Adopting BN308-450 ultraviolet negative photoresist and related matching agents to carry out TC4 deflector surface mask processing. The method is roughly divided into two steps:
step 2.1), gluing: and coating the photoresist on the surface of the TC4 flow guide plate by adopting a two-stage rotating speed-spin coating method. The specific parameters are as follows: the first-stage rotation speed is 800rpm, the time is 20s, the second-stage rotation speed is 2000rpm, the time is 40s, the photoresist film with the thickness of about 10 mu m is obtained, and the photoresist film is dried for 20min at the temperature of 90 ℃.
Step 2.2), exposure: and (3) closely attaching the mask plates engraved with the guide array shapes to a TC4 flow guide plate with a photoresist film, exposing for 25-40 s by using an ultraviolet exposure machine, and then developing (2 min) and cleaning (1 min) the flow guide plate. Finally, the sample was placed in an oven at 120 ℃ for 30 min.
Step 3), fine electroplating, namely plating a metal part which is not covered by the photoresist on the surface of the guide plate by using current:
the TC4 flow guide plate with the photoresist mask is connected with a power supply anode, an electrolytic nickel plate with the purity of 99.8 percent is connected with a power supply cathode, the area ratio of the cathode to the anode is about 1:2, and the electrode spacing is 30 mm. When a power supply is switched on, an anode generates electrochemical reaction, a plating layer is plated on a metal part which is not covered by photoresist, so that each guide array is formed on the surface of the guide plate, step 4) is carried out, a fluorosilane aqueous solution is coated and prepared, the mass fraction of fluorosilane is 0.5 wt%, the TC4 guide plate prepared in the step 3) is immersed in the prepared solution, so that low-surface-energy fluorosilane is coated on the electroplated microstructure, and then drying and curing are carried out at the temperature of 90 ℃, so that the surface of the plating layer structure becomes a super-hydrophobic extreme infiltration interface;
when micro electroplating is carried out, an Array 3645A constant voltage and constant current power supply and an 85-2 constant temperature magnetic stirrer are adopted, the pH value is 4 +/-0.2, the temperature is 45 ℃, and the current density is 0.5A/dm2To 1.25A/dm2For 2 hours;
and 5) removing the photoresist on the surface of the TC4 guide plate.
According to the invention, a microgravity test simulated by a small-angle inclination pattern is prepared on the surface of the guide plate made of the TC4 titanium alloy material, and the test shows that liquid drops can rapidly flow within 1s for nearly 50mm, which shows that the surface has excellent drainage characteristics.
In order to verify the stability of the manufacturing process performance, a test that liquid drops rapidly flow on the functional surface for many times needs to be carried out under the simulated microgravity, and the lifting height of a guide plate or a similar structure with a self-driving flow type functional surface to medium water can reach about 10mm under the environment of 1g of the ground.
The design concept provided by the invention is to improve the surface of the self-driving function, modify the surface of the guide plate and construct an intelligent propulsion concept. The self-driven flow characteristic of the guide plate is optimized through the special geometrical form and the characteristic dimension of the micro-structure, the functional surface with controllable self-driven flow capacity is obtained, and the design of the existing plate-type surface tension storage tank is optimized.
After the structure is adopted, compared with the design of the existing plate-type surface tension storage tank at home and abroad, the flow guide performance of the storage tank is obviously improved, the working efficiency of the flow guide plate is obviously improved, the problem that water is easily accumulated at the joint of the flow guide plate and the tank body is easily solved, the propulsion requirements of nano, micro and nano-scale spacecrafts, the requirements of low electricity and the like are met, and the structure is optimized on the basis of the original flow guide plate, so that the problems of newly increased volume, structure and the like in the optimization process are effectively controlled.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A guide plate functional surface of an imitated Laval nozzle structure is characterized by comprising a guide plate surface and a plurality of guide arrays which are uniformly arranged on the guide plate surface;
the surface of the guide plate is a super-hydrophilic surface;
the guide array comprises a plurality of uniformly arranged structural units with super-hydrophobic surfaces on the surfaces;
the surface of the guide plate between the adjacent guide arrays vertical to the flow guide direction of the guide plate is in a Laval nozzle cross section shape, and the cross section of the guide plate is gradually narrowed from the width to the width in the flow guide direction of the guide plate.
2. The Laval nozzle-like baffle functional surface of claim 1, wherein the baffle surface between adjacent structural units in the guide array perpendicular to the flow direction of the baffle is in the shape of a Laval nozzle cross section, and the Laval nozzle cross section is gradually narrowed from a wide part to a narrow part in the flow direction of the baffle.
3. The method for manufacturing a functional surface of a baffle plate with an imitated Laval nozzle structure according to claim 1, comprising the following steps:
step 1), pretreatment: grinding and polishing the TC4 guide plate until the roughness Ra is smaller than a preset roughness threshold value, and sequentially performing ultrasonic cleaning by using acetone and alcohol to remove surface impurities so that the surface of the TC4 guide plate becomes a super-hydrophilic surface;
step 2), carrying out mask processing on the surface of the TC4 flow guide plate:
step 2.1), coating the photoresist on the surface of a TC4 flow guide plate by adopting a two-stage rotating speed-spin coating method;
step 2.2), closely attaching the mask plates engraved with the guide array shapes to a TC4 guide plate with a photoresist film, exposing by using an ultraviolet exposure machine, then developing and cleaning the guide plate, and finally placing the sample in an oven to be heated for a preset time threshold;
step 3), fine electroplating, namely plating a metal part which is not covered by the photoresist on the surface of the guide plate by using current:
connecting a TC4 flow guide plate with a photoresist mask with a power supply anode, connecting an electrolytic nickel plate with a power supply cathode, switching on the power supply to enable the anode to generate electrochemical reaction, plating a plating layer on a metal part which is not covered by the photoresist, and further forming each guide array on the surface of the flow guide plate;
step 4), coating the functional coating, preparing a fluorosilane aqueous solution, immersing a TC4 flow guide plate into the prepared solution to coat the low-surface-energy fluorosilane on the electroplated microstructure, and then drying and curing to enable the surface of the coating structure to be a super-hydrophobic surface;
and 5) removing the photoresist on the surface of the TC4 guide plate.
4. The method for manufacturing the functional surface of the guide plate with the simulated Laval nozzle structure according to claim 2, wherein specific parameters of the step 2.1) of coating photoresist on the surface of the TC4 guide plate by a two-stage rotating speed-spin coating method are as follows:
the first-stage rotation speed is 800rpm, the time is 20s, the second-stage rotation speed is 2000rpm, the time is 40s, the photoresist film with the thickness of about 10 mu m is obtained, and the photoresist film is dried for 20min at the temperature of 90 ℃.
5. The method for manufacturing a functional surface of a baffle plate of an imitated Laval nozzle structure as claimed in claim 2, wherein the roughness threshold value preset in the step 1) is 0.4 μm.
6. The method for manufacturing a functional surface of a baffle plate of an imitated Laval nozzle structure as claimed in claim 2, wherein the time threshold preset in the step 2.2) is 30 min.
7. The method for manufacturing the functional surface of the baffle plate of the simulated Laval nozzle structure as claimed in claim 2, wherein the purity of the electrolytic nickel plate in the step 3) is 99.8%, the area ratio of the cathode to the anode is about 1:2, and the inter-polar distance is 30 mm.
8. The method for manufacturing the functional surface of the guide plate with the simulated Laval nozzle structure as claimed in claim 2, wherein an Array 3645A constant voltage and current power supply and an 85-2 constant temperature magnetic stirrer are adopted during the micro electroplating in the step 3), the pH value is 4 +/-0.2, the temperature is 45 ℃, and the current density is 0.5A/dm2To 1.25A/dm2The time period was 2 hours.
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| CN113277123A (en) * | 2021-06-18 | 2021-08-20 | 中国人民解放军军事科学院国防科技创新研究院 | Surface treatment method and management device for plate type surface tension storage box management device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5865978A (en) * | 1997-05-09 | 1999-02-02 | Cohen; Adam E. | Near-field photolithographic masks and photolithography; nanoscale patterning techniques; apparatus and method therefor |
| CN103952732A (en) * | 2014-04-11 | 2014-07-30 | 华南理工大学 | Metal super-hydrophobic surface and preparation method thereof |
| CN106094445A (en) * | 2016-06-12 | 2016-11-09 | 中国科学院微电子研究所 | The manufacture method of large ratio of height to width nano level metal structure |
| CN106903034A (en) * | 2017-03-17 | 2017-06-30 | 淮阴工学院 | Super-hydrophobic aluminum alloy surface preparation method and super-hydrophobic aluminum alloy surface |
| CN107321583A (en) * | 2017-07-21 | 2017-11-07 | 南京航空航天大学 | The in-situ construction method of micro-nano hierarchy super hydrophobic surface and application |
| CN111266679A (en) * | 2019-11-27 | 2020-06-12 | 南京航空航天大学 | Preparation method of self-propelled functional surface and surface tension storage tank based on surface |
-
2020
- 2020-07-06 CN CN202010640271.9A patent/CN111776252B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5865978A (en) * | 1997-05-09 | 1999-02-02 | Cohen; Adam E. | Near-field photolithographic masks and photolithography; nanoscale patterning techniques; apparatus and method therefor |
| CN103952732A (en) * | 2014-04-11 | 2014-07-30 | 华南理工大学 | Metal super-hydrophobic surface and preparation method thereof |
| CN106094445A (en) * | 2016-06-12 | 2016-11-09 | 中国科学院微电子研究所 | The manufacture method of large ratio of height to width nano level metal structure |
| CN106903034A (en) * | 2017-03-17 | 2017-06-30 | 淮阴工学院 | Super-hydrophobic aluminum alloy surface preparation method and super-hydrophobic aluminum alloy surface |
| CN107321583A (en) * | 2017-07-21 | 2017-11-07 | 南京航空航天大学 | The in-situ construction method of micro-nano hierarchy super hydrophobic surface and application |
| CN111266679A (en) * | 2019-11-27 | 2020-06-12 | 南京航空航天大学 | Preparation method of self-propelled functional surface and surface tension storage tank based on surface |
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| CN113277123A (en) * | 2021-06-18 | 2021-08-20 | 中国人民解放军军事科学院国防科技创新研究院 | Surface treatment method and management device for plate type surface tension storage box management device |
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