CN108167281B - A kind of accessible guidance method of drop based on porous water absorbent fiber - Google Patents
A kind of accessible guidance method of drop based on porous water absorbent fiber Download PDFInfo
- Publication number
- CN108167281B CN108167281B CN201711263687.8A CN201711263687A CN108167281B CN 108167281 B CN108167281 B CN 108167281B CN 201711263687 A CN201711263687 A CN 201711263687A CN 108167281 B CN108167281 B CN 108167281B
- Authority
- CN
- China
- Prior art keywords
- drop
- porous
- fibrous material
- porous fibrous
- saturated aqueous
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
- F15D1/002—Influencing flow of fluids by influencing the boundary layer
- F15D1/0085—Methods of making characteristic surfaces for influencing the boundary layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
- F15D1/002—Influencing flow of fluids by influencing the boundary layer
- F15D1/0025—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply
- F15D1/003—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply comprising surface features, e.g. indentations or protrusions
Abstract
The invention discloses a kind of accessible guidance methods of the drop based on porous water absorbent fiber, guide rails are made using porous fibrous material, track made of porous fibrous material is placed in moisture absorption saturated aqueous solution, it stands, porous fibrous material is set by solution impregnation, to take out porous fibrous material completely and dry；The porous fibre of drying is bent to the specific location that drop to be guided is fixed on after predetermined shape.The material of guide rails makes porous fibrous material surface permanent so that the effective time of guide rails is extended there are the moisture film of a layer thickness micron order scale due to the hydrone in the absorbable air of moisture absorption saturated aqueous solution processing.After guiding moisture film of the drop contact to porous fibre surface, strong inter-molecular attraction is generated, so that drop is bound tightly on porous fibre, the space angle range for guaranteeing that drop does not derail is big, and effectively expand drop guides occasion；And operation is convenient, facilitates popularization and use.
Description
Technical field
The present invention relates to drop behaviour control fields, specifically, being related to a kind of utilizing the steady of porous water absorbent fiber surface
Determine the method that water film realizes the accessible orientation guiding of drop.
Background technique
Drop behaviour control is to be transformed to the property of drop or with the property on the surface of drop contact, so that liquid
The research that drop can be moved according to scheduled track.Using drop behaviour control method, the motion path of drop is controlled,
It can solve a series of engineering problems；Such as: completely new think of is provided to solve Proton Exchange Membrane Fuel Cells decorporation water problems
Road provides completely new approach etc. for the separation of mixed solution.
Existing drop control method is concentrated mainly on the control by electromagnetic field realization to magnetic fluid, in general drop
, it can be achieved that guiding to drop small distance in terms of motion control.104345140 A of patent of invention CN discloses a kind of " magnetic fluid
Control device and its control method ", which, which cannot achieve, controls general drop；In 105833814 A of patent CN
Mainly in micro- reaction system in " a kind of drop self-driving type microreactor ", the device is complicated for operation, and can guide away from
From limited；1588090 A of patent CN is related to " a kind of low pressure microlayer model control device based on surface tension ", the microlayer model control
Device processed is directed to microfluid, and control condition is complicated；" one kind is based on wall surface involved in 106053869 A of patent of invention CN
The guidance method of the drop massless loss of wetting regulation ", the environment cleaning that this method needs drop to guide is without larger dust.
Behaviour control in existing technical literature to drop provides many very valuable methods, but there is also not
Foot: such as, there is limitation to drop Property requirements；The control system of part guidance method is complicated, not easy to operate and popularization；Guiding side
Method is to environmental requirement height.
Summary of the invention
In order to avoid the shortcomings of the prior art, the present invention proposes that a kind of drop based on porous water absorbent fiber is accessible
Guidance method.
The technical solution adopted by the present invention to solve the technical problems is: the drop based on porous water absorbent fiber is accessible to lead
Draw method, it is characterised in that the following steps are included:
Step 1. cleans material surface to be treated, and surface to be treated is arbitrary shape face；
Step 2. selects porous fibrous material, and required orbital path is made on porous fibrous material；
Step 3. dissolves high-purity hygroscopic agent in water, and moisture absorption saturated aqueous solution is made；
Track made of porous fibrous material is placed in moisture absorption saturated aqueous solution by step 4., is stood 6h, is made porous fibre
Material is tieed up completely by solution impregnation, takes out porous fibrous material, drying；
The porous fibrous material of orbital path is fixed on surface handled by step 1 by step 5., completes hygroscopic material
Moisture film guide production；
Step 6. adds drop on the track of step 5, and adjusts the angle of the plane where drop trajectories and horizontal plane
The value range at the angle β, β is 0~180 °；Apply external force, adjusting external force size keeps predetermined guide rails of the drop on surface even
Speed movement, realizes the guiding of any direction.
Beneficial effect
The accessible guidance method of a kind of drop based on porous water absorbent fiber proposed by the present invention, using porous fibrous material
Guide rails are made, track made of porous fibrous material is placed in moisture absorption saturated aqueous solution, is stood, is made porous fibrous material
Completely by solution impregnation, takes out porous fibrous material and dry；It is fixed on after the porous fibre of drying is bent to predetermined shape
The specific location of drop to be guided.The material of guide rails is due to the moisture in the absorbable air of moisture absorption saturated aqueous solution processing
Son makes porous fibrous material surface permanent make the effective time of guide rails there are the moisture film of a layer thickness micron order scale
Extended.After guiding moisture film of the drop contact to porous fibre surface, strong inter-molecular attraction is generated, so that liquid
Drop is bound tightly on porous fibre, and the space angle range for guaranteeing that drop does not derail is big, effectively expands leading for drop
Draw occasion；And operation is convenient, facilitates popularization and use.
The accessible guidance method of drop of the present invention without particular/special requirement, can meet the shape and roughness of drop guidance surface
The demand of any shape, width and angle.The guide function of guide wire is obvious, and guide wire is formed by shape can be as needed
Change.
Detailed description of the invention
With reference to the accompanying drawing with embodiment to a kind of accessible guiding side of drop based on porous water absorbent fiber of the invention
Method is described in further detail.
Fig. 1 is that drop moves schematic diagram in guide rails in two-dimensional surface.
Fig. 2 is that drop moves schematic diagram in guide rails in three-dimensional space.
In figure:
1. 2. carbon paper of water droplet, 3. guide wire, 4. glycerite drips 5. cones
The angle of plane and horizontal plane where β drop guide wire
Specific embodiment
The present embodiment is a kind of accessible guidance method of the drop based on porous water absorbent fiber.
The similar principle that mixes of solubility points out that the similar substance of structure is easy to miscible between each other, and architectural difference is biggish
Substance indissoluble.The dissolution of substance is intermolecular active force, and the intermolecular force of liquid internal determines solubility between liquid
Size, so, be absolutely mutually dissolved between same liquid, it is meant that the intermolecular attraction inside solution is compared to two
Kind different solutions absolute maximum.So being comparatively ideal guidance method with moisture film guiding drop.
It is porous after immersion by impregnating porous fibrous material in hygroscopic agent saturated solution in the present embodiment
Inside fibrous material drying can be then taken out full of saturation dilute solution；The porous fibre of drying is bent into preboarding
The specific location of drop to be guided is fixed to after shape.Due to the hygroscopic effect of hygroscopic agent, porous fibrous material surface can be from sky
Hygroscopic moisture in gas is always maintained at the water film of one layer of micron order scale.When drop contact to be guided to porous fibre surface
Moisture film after, strong inter-molecular attraction can be generated, so that drop is bound tightly on porous fibre.Even if by other
External force can only also be moved along porous fibre direction, show good drop guide effect.Utilize the softness of porous fibre
Property, it can be spatially bent into Arbitrary 3 D shape.Therefore, the intense beam binding force between moisture film and drop, Ji Nengshi are utilized
Existing guiding of the drop on wall surface, can also realize guiding of the drop on three-dimensional space.In addition, the suction outstanding due to hygroscopic agent
Wet ability, it is ensured that moisture film is muchly present on porous fibrous material, therefore the guidance method can for a long time effectively.But due to
The guidance method essence is the intermolecular force of drop, therefore the drop type that can be guided is only limitted to the surface tension coefficient with water
The drop of similar solution, the surface tension coefficient of water are 0.0732N/m.
Embodiment 1
Refering to fig. 1, the present embodiment is using the porous carbon paper surface in Proton Exchange Membrane Fuel Cells as test surfaces, using chlorine
Change lithium and makes moisture absorption saturated aqueous solution, it is real by the method for the angle β value of plane and horizontal plane where adjusting drop guide wire
Accessible guiding now based on moisture film guiding line traffic control, specific step is as follows:
The first step, selects carbon paper 2, and carbon paper is clean by carbon paper surface processing and sufficiently dry having a size of 200 × 200mm；
Soluble in water moisture absorption saturated aqueous solution is made in the hygroscopic agent lithium chloride that purity is 99% by second step；
Third step uses diameter for 1.5mm, and length is the white cotton line of 500mm, is placed on the suction that step 2 is proposed
In wet saturated aqueous solution, 6h is stood, cotton thread is caused by solution impregnation, to take out drying completely；
Cotton line is pasted onto carbon paper surface by the 4th step, then by the processed moisture film guide wire 3 of hygroscopic agent saturated aqueous solution
Guidance system production finish；
5th step, it is 20 μ L water droplets 1 that volume is instilled on guide wire 3, and adjusts the plane where drop guide wire and water
The angle beta of plane included angle makes drop start to move on guide wire；
The angle β of plane and horizontal plane where drop guide wire is adjusted from 0 ° to 180 °, is tried respectively by the 6th step
It tests, tests the superiority and inferiority of moisture film guide wire guide effect；
7th step after placing guiding device 30 days, then carries out the experiment of step 6, tests the persistence of guiding device.
In the present embodiment, using the moisture-absorption characteristics of carbon paper surface lithium chloride, and to water droplet there is superpower binding force to lead
Lead effectively fetters water droplet；Volume is that the starting angle that the water droplet of 20 μ L is moved along curved guide wire is
20°；When the angle β value of plane and horizontal plane where drop guide wire is greater than 180 °, water droplet still is able to firmly by beam
It is tied on guide wire；After guide wire is placed one month, the guide function of guide wire is still obvious；Guide wire is formed in experiment
Shape can change as needed.
Embodiment 2
In the present embodiment, circular cone body Model is made with polystyrene material, makes three-dimensional space spiral-guide track, is used
Lithium chloride makes moisture absorption saturated aqueous solution immersion treatment, provides similar in surface tension coefficient and water 10% glycerite drop,
Glycerite drop is realized in the accessible guiding of spatially spiral moisture film guiding line traffic control, specific step is as follows:
The first step selects polystyrene material that cone is made, and base diameter 200mm is highly 200mm, by surface
Processing is clean, and sufficiently dry；
Soluble in water moisture absorption saturated aqueous solution is made in the hygroscopic agent lithium chloride that purity is 99% by second step；
Third step uses diameter for 1.5mm, and length is the white cotton line of 300mm, is placed on the suction that step 2 is proposed
In wet saturated aqueous solution, 6h is stood, cotton thread is caused by solution impregnation, to take out drying completely；
Cotton line is pasted onto conical surface by the 4th step, then is guided by the processed moisture film of hygroscopic agent saturated aqueous solution
The guidance system production of line finishes；
5th step instills 10% glycerite that volume is 20 μ L on the top of guide wire and drips, and glycerite drop exists
It is moved downward under gravity along guide wire；
6th step after placing guiding device 30 days, then carries out the experiment of step 5, tests the lasting of guiding device.
In the present embodiment, the conical surface made of polystyrene material utilizes the moisture-absorption characteristics of lithium chloride and right
Drop has the guide wire of superpower binding force, fetters to drop and drop is directed in space；Guide wire is placed 30 days
Afterwards, the guide function of guide wire is obvious；Guide wire is formed by shape and can change as needed in experiment.
Claims (1)
1. a kind of accessible guidance method of drop based on porous water absorbent fiber, it is characterised in that the following steps are included:
Step 1. cleans material surface to be treated, and surface to be treated is arbitrary shape face；
Step 2. selects porous fibrous material, and required orbital path is made on porous fibrous material；
Step 3. dissolves high-purity hygroscopic agent in water, and moisture absorption saturated aqueous solution is made；
Track made of porous fibrous material is placed in moisture absorption saturated aqueous solution by step 4., is stood 6h, is made porous fibre material
Material by solution impregnation, takes out porous fibrous material, drying completely；
The porous fibrous material of orbital path is fixed on surface handled by step 1 by step 5., completes the water of hygroscopic material
Film guiding production；
Step 6. adds drop on the track of step 5, and adjusts the angle beta of the plane where drop trajectories and horizontal plane, the angle β
Value range be 0~180 °；Apply external force, adjusting external force size transports predetermined guide rails of the drop on surface at the uniform velocity
It is dynamic, realize the guiding of any direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711263687.8A CN108167281B (en) | 2017-12-05 | 2017-12-05 | A kind of accessible guidance method of drop based on porous water absorbent fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711263687.8A CN108167281B (en) | 2017-12-05 | 2017-12-05 | A kind of accessible guidance method of drop based on porous water absorbent fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108167281A CN108167281A (en) | 2018-06-15 |
| CN108167281B true CN108167281B (en) | 2019-07-19 |
Family
ID=62524361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711263687.8A Active CN108167281B (en) | 2017-12-05 | 2017-12-05 | A kind of accessible guidance method of drop based on porous water absorbent fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108167281B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1234112A (en) * | 1996-10-10 | 1999-11-03 | 康宁股份有限公司 | Tool and method for transfer of drops |
| WO2016022869A1 (en) * | 2014-08-07 | 2016-02-11 | United Technologies Corporation | Article with controllable wettability |
| CN107335490A (en) * | 2017-08-15 | 2017-11-10 | 肇庆市华师大光电产业研究院 | A kind of micro-fluidic chip of the PLC technology based on liquid liquid electrowetting effect |
| CN108627666A (en) * | 2018-05-15 | 2018-10-09 | 西北工业大学 | A kind of drop recessiveness guidance method based on V-groove |
-
2017
- 2017-12-05 CN CN201711263687.8A patent/CN108167281B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1234112A (en) * | 1996-10-10 | 1999-11-03 | 康宁股份有限公司 | Tool and method for transfer of drops |
| WO2016022869A1 (en) * | 2014-08-07 | 2016-02-11 | United Technologies Corporation | Article with controllable wettability |
| CN107335490A (en) * | 2017-08-15 | 2017-11-10 | 肇庆市华师大光电产业研究院 | A kind of micro-fluidic chip of the PLC technology based on liquid liquid electrowetting effect |
| CN108627666A (en) * | 2018-05-15 | 2018-10-09 | 西北工业大学 | A kind of drop recessiveness guidance method based on V-groove |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108167281A (en) | 2018-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7655069B2 (en) | Removal of carbon dioxide from air | |
| Brilman et al. | Capturing atmospheric CO2 using supported amine sorbents | |
| Ma et al. | Bio-inspired humidity responsive switch for directional water droplet delivery | |
| Hou et al. | Stronger water hanging ability and higher water collection efficiency of bioinspired fiber with multi-gradient and multi-scale spindle knots | |
| CN103394373A (en) | Preparation method of hydrogenation catalyst | |
| CN101475206A (en) | Method for preparing ZnO nanorod with controllable distribution by growing in microchannel | |
| CN108167281B (en) | A kind of accessible guidance method of drop based on porous water absorbent fiber | |
| CN101865928A (en) | Super-hydrophobic surface micro-droplet operation and control method based on electric field effect | |
| CN102303906B (en) | Ascorbic-acid-aided colloidal crystal template method used for preparing three-dimensionally ordered macroporous BiVO4 | |
| CN101905903B (en) | Manufacturing method of dual-template of three-dimensionally ordered macroporous lanthanum manganate with mesoporous wall of hole | |
| Yao et al. | Self-propulsion of droplets by spatially-varying surface topography | |
| Yan et al. | The highly efficient collection of underwater oil droplets on an anisotropic porous cone surface via an electric field | |
| CN102784585A (en) | Foam stabilizer based on Gemini surfactant and ultrafine microparticles | |
| Wen et al. | Efficient gas adsorption using superamphiphobic porous monoliths as the under-liquid gas-conductive circuits | |
| CN204625733U (en) | Lithium ion adsorption column | |
| Yao et al. | Femtosecond-laser-patterned origami Janus membrane toward enhanced water fog harvesting | |
| CN205868135U (en) | A device sways for mixing shake even three acid | |
| US9908777B2 (en) | Method and system for enhancing the mass transfer rate of a soluble gas | |
| Chen et al. | Design and fabrication of inverted tapered micro-pillars for spontaneously transporting liquid upward | |
| CN104928471A (en) | Lithium-ion adsorption column and preparing method thereof | |
| CN205775098U (en) | Superposing type storage Weft handling device | |
| CN205855366U (en) | A kind of lithium battery Bidirectional Conduction material grapple structure | |
| CN103922740B (en) | Mesoporous praseodymium zirconium composite oxide and its preparation method | |
| CN102560680A (en) | Research device for interfering with growth of complex crystal by using focusing strong magnetic field | |
| US9821294B2 (en) | Self assembled particles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |