CN104131596A - Bionic constructing method for fog collecting materials with magnetic responsibility - Google Patents
Bionic constructing method for fog collecting materials with magnetic responsibility Download PDFInfo
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- CN104131596A CN104131596A CN201410347407.1A CN201410347407A CN104131596A CN 104131596 A CN104131596 A CN 104131596A CN 201410347407 A CN201410347407 A CN 201410347407A CN 104131596 A CN104131596 A CN 104131596A
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Abstract
The invention discloses a bionic constructing method for fog collecting materials with magnetic responsibility and belongs to the technical field of function materials. The bionic constructing method comprises the steps of manufacturing a mould plate, preparing PDMS, scattering magnetic particles in the mould plate, pouring the PDMS to the mould plate to be moulded, curing the PDMS, magnetizing a magnetic conical array and resolving the mould plate to demould. The bionic constructing method is simple in procedure and can prepare the conical fog collecting material array which has stronger magnetic responsibility and can be used for continuously collecting fog in high efficiency through a general mould plate method. The fog collecting efficiency, in the magnetic field action, of the magnetic responsibility fog collecting materials prepared by the bionic constructing method is far higher than the fog collecting efficiency, in a static condition, of the magnetic responsibility fog collecting materials. Furthermore, the magnetic responsibility fog collecting materials are higher in stability and can be widely applied to the important fields of scientific research, environmental friendliness and biology.
Description
Technical field
The invention belongs to technical field of function materials, be specifically related to a kind of bionical construction method with magnetic responsiveness collection mist material, solved existing must be under mist flow conditions could be efficient, the technical problem that continues to catchment.
Background technology
Water is the material base that the mankind depend on for existence and development, and the two large subject matters that global water resources exists are that water resources shortage and water pollution are serious.For solving severe water situation, countries in the world turn to the exploitation of Discussion about Unconventional Water Resources one after another, as regeneration effluent, and utilization of desalinization and potential water etc.At present, fog is as a kind of potential water resource, and its Collection and use is more and more subject to the extensive concern of all circles' researcher.Be subject to the inspiration of nature biotechnology cactus and spider silk, the mist collector part that researchers research has been invented multiple types cactus thorn and class spider silk structure is alleviated the crisis of water resources shortage.The factor that these devices can change into fog available water and realize the directed transport of water mainly contains two: the one, and device surface has surface can gradient, and the 2nd, device architecture can produce Laplce's pressure reduction.But, such devices normally under mist flow conditions, realize high-efficiency and continuous fog collect, this can not have the calm situation of mist in fine reform of nature environment.Therefore, how to improve the defect existing in existing method and become this area researcher problem anxious to be resolved.
Summary of the invention
For problems of the prior art, the invention provides a kind of bionical construction method with magnetic responsiveness collection mist material, for realizing the process that collects mist at static fog atmosphere, the method preparation flow is simple, utilize template on a large scale complex prepare the magnetic circular cone array of neat rule, by its motion of magnet drives, realize the fog of high-efficiency and continuous in static fog atmosphere and collected.
The present invention proposes a kind of bionical construction method with magnetic responsiveness collection mist material, specifically comprises following step:
(1) preparation of template: mechanical compaction goes out the array of a turbination hole composition in substrate;
(2) preparation of dimethyl silicone polymer (PDMS): get a beaker, PDMS body and curing compound are poured in beaker according to special ratios, fully stir with glass bar, beaker is put into vacuum desiccator degasification after stirring for subsequent use;
(3) magnetic particle is added to the template upper surface preparing in step (1), machinery concussion evenly spreads in the array of hole magnetic particle, after dispersion, the magnetic ion of template surface remnants is wiped;
(4) take out the PDMS preparing in step (2), cast in the template that contains magnetic particle, then template is placed in to vacuum desiccator degasification.In order to obtain magnetized circular cone array, in the process of degasification, a block permanent magnet to be placed in template under;
(5) take out the template of handling well in step (4), be placed in baking oven and solidify.General preferred consolidation condition is at 80 DEG C, to solidify 2～6h.
(6) after the template being cured in step (5) is taken out, the demoulding, obtains conical magnetic responsiveness collection mist material array, can realize in static fog atmosphere and carry out fog collection.
The invention has the advantages that:
1, a kind of bionical construction method with magnetic responsiveness collection mist material that the present invention proposes, preparation method is simple, and raw material is easy to get, with low cost.
2, a kind of bionical construction method with magnetic responsiveness collection mist material that the present invention proposes, can be used for the high-efficiency continuous collection of the static fog in airless disturbance situation, haze in purifying air, removes the mist of oil in factory building, all has extensive use in fields such as environmental protection.
3, a kind of bionical construction method with magnetic responsiveness collection mist material that the present invention proposes, the prepared circular cone array of the method is pollution-free, can be recycled.
Brief description of the drawings
Fig. 1: a kind of bionical construction method flow chart with magnetic responsiveness collection mist material that the present invention proposes;
Fig. 2: the low power electromicroscopic photograph (SEM) of magnetic responsiveness collection mist material prepared by employing the inventive method;
Fig. 3: adopt in the magnetic responsiveness collection mist material that makes of the inventive method a bore spine under static state to collect the photo of fog;
Fig. 4: adopt in the magnetic responsiveness collection mist material that makes of the inventive method the photo of a bore spine at the moving drop directed transport of collecting fog and fog is changed into of certain hour section inner magnetic region movable pendulum.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
A kind of bionical construction method with magnetic responsiveness collection mist material that the present invention proposes, as shown in Figure 1, the method comprises following step:
(1) preparation of template: (parameter of array mesopore is preferably hole depth 3mm to go out an array being formed by turbination hole in the upper mechanical compaction of transparent PVC plate substrate (PVC plate is preferably dimensioned to be 15mm × 15mm × 6mm), the maximum gauge 500 μ m～720 μ m in hole, the distance between every two holes be 400 μ m～750 μ m).
(2) preparation of PDMS: get a 100mL beaker, PDMS body and curing compound are poured wherein according to special ratios into (mass ratio of PDMS body and curing compound is 5:1～20:1, be preferably 10:1), fully stir with glass bar, after stirring, put it into degasification in vacuum desiccator (30～60min) for subsequent use;
(3) magnetic particle is added in the template preparing in step (1), machinery concussion evenly spreads in the hole array of template magnetic particle, after dispersion, magnetic particle remaining on template surface is wiped;
Described magnetic particle can be the magnetic responsiveness particles such as cobalt particle, tri-iron tetroxide particle or neodymium iron boron, and the particle diameter of magnetic particle is generally 20nm～2 μ m.
(4) take out the PDMS preparing in step (2), cast in the template that contains magnetic particle, then be placed in vacuum desiccator degasification (30～60min), in order to obtain magnetized collection mist material, will be by template horizontal positioned in the process of degasification, and by a block permanent magnet (field intensity 0.9T) be placed in stencil plane under.
(5) take out the template of handling well in step (4), be placed in baking oven and at 80 DEG C of temperature, solidify 2～6h, in solidification process, to ensure that baking oven and baking oven inner formword are horizontal, the surface level of PDMS after can ensureing like this to solidify, i.e. PDMS even thickness everywhere.
(6) dissolve template and carry out the demoulding, be specially: after the template being cured in step (5) is taken out, put into a 100mL sealed bottle, in sealed bottle, add the analytically pure oxolane of 50～80mL again, seal bottle cap, place at normal temperatures 24～48h, after template is dissolved, magnetic circular cone array is taken out from sealed bottle, with oxolane cleaning 2～3 times, be placed on again dry in baking oven (dry 15～30min in the baking oven of 80 DEG C), obtaining conical magnetic responsiveness of the present invention integrates mist material array (array optimization parameter is as the high 3mm of circular cone, cone bottom diameter 500 μ m, spacing between the cone bottom margin of every two bore spines be 400 μ m), the fog that can realize in static fog atmosphere is collected.
As shown in Figure 2, neat with the magnetic circular cone array of template synthesis, rule, has comparatively coarse surface to the magnetic circular cone array of a kind of bionical construction method processing with magnetic responsiveness collection mist material that employing the present invention proposes simultaneously.The magnetic conical array that adopts the inventive method to prepare is shown stronger magnetic responsiveness, can under the effect in magnetic field, swing flexibly, and after magnetic field is withdrawn, can return to again initial vertical state, has good reversibility.A magnetic bore spine of choosing in array is research object, shown in Fig. 3,4, be respectively the collection mist amount of static bore spine in certain hour (60min) and same time under the same conditions, the amount of the fog that the magnetic bore spine that adopts the inventive method to obtain is collected at magnetic fields lower swing.Can find by contrast, magnetic drives the bore spine of lower swing to have larger collection mist amount, and therefore, the present invention is bionical to have constructed the array with magnetic responsiveness collection mist material and realize extensive, high-throughout fog in static fog atmosphere and collect.
embodiment 1
A kind of bionical construction method with magnetic responsiveness collection mist material that the present embodiment proposes, the method comprises following step:
(1) preparation of template: (parameter of hole array is hole depth 3mm to go out a hole array being formed by turbination hole in the upper mechanical compaction of transparent polyvinyl chloride (PVC) plate (being of a size of 15mm × 15mm × 6mm), the maximum gauge 720 μ m in hole, the distance between every two holes be 750 μ m).
(2) preparation of PDMS: get a 100mL beaker, take respectively 10gPDMS body, 1g curing compound, mixes with curing compound PDMS body according to the mass ratio of 10:1, fully stir with glass bar, after stirring, put it in vacuum desiccator degasification 30min for subsequent use;
(3) be that the cobalt particle of 2 μ m adds in the template preparing in step (1) in the array of hole by particle diameter, machinery concussion is uniformly dispersed it, after dispersion, outer template remaining cobalt ions is wiped;
(4) take out the PDMS preparing in step (2), it is slowly cast in the template that contains cobalt particle, again above sample is placed in to vacuum desiccator degasification 30min, in order to obtain magnetized collection mist material, the permanent magnet that will be 0.9T by a field intensity in the process of degasification be placed in sample under.
(5) take out the sample of handling well in step (4), be placed in baking oven and at 80 DEG C, solidify 4h, in solidification process, will ensure that baking oven is placed on horizontal level.
(6) after the sample being cured in step (5) is taken out, put into a 100mL sealed bottle, in sealed bottle, add the analytically pure oxolane of 60mL again, seal bottle cap, place at normal temperatures 36h, after template is dissolved, magnetic circular cone array is taken out from sealed bottle with tweezers, get again a 50mL beaker, pour wherein 25mL oxolane into, repeatedly clean sample 3 times, be placed on dry 20min in the baking oven of 80 DEG C again, obtain conical magnetic responsiveness collection mist material array of the present invention, the fog that can realize in static fog atmosphere is collected.
A magnetic bore spine of choosing in array is research object, shown in Fig. 3,4, be respectively the collection mist amount of static bore spine in certain hour (60min) and same time under the same conditions, the amount of the fog that the magnetic bore spine that adopts the inventive method to obtain is collected at magnetic fields lower swing.Calculate, under the same terms, the amount (volume) that the bore spine of swing is collected fog in same time is the more than hundred times of static bore spine.Can in static fog atmosphere, realize extensive, high-throughout fog and collect by the bionical array material with magnetic responsiveness of constructing.
embodiment 2
A kind of bionical construction method with magnetic responsiveness collection mist material that the present embodiment proposes, the method comprises following step:
(1) preparation of template: (parameter of hole array is hole depth 3mm to go out a hole array being formed by turbination hole in the upper mechanical compaction of transparent PVC plate (being of a size of 20mm × 20mm × 6mm), the maximum gauge 500 μ m in hole, the distance between every two holes be 400 μ m).
(2) preparation of PDMS: get a 100mL beaker, take respectively 15gPDMS body, 3g curing compound, mixes PDMS body according to the quality of 5:1 with curing compound than ratio, fully stir with glass bar, after stirring, put it in vacuum desiccator degasification 60min for subsequent use;
(3) be that the cobalt particle of 2 μ m adds in the template preparing in step (1) by particle diameter, machinery concussion is uniformly dispersed it, after dispersion, outer template remaining cobalt ions is wiped;
(4) take out the PDMS preparing in step (2), it is slowly cast in the template that contains cobalt particle, again above sample is placed in to vacuum desiccator degasification 60min, in order to obtain magnetized collection mist material, the permanent magnet that will be 0.9T by a field intensity in the process of degasification be placed in sample under.
(5) take out the sample of handling well in step (4), be placed in baking oven and at 80 DEG C, solidify 2h, in solidification process, will ensure that baking oven is placed on horizontal level.
(6) after the sample being cured in step (5) is taken out, put into a 100mL sealed bottle, in sealed bottle, add the analytically pure oxolane of 80mL again, seal bottle cap, place at normal temperatures 48h, after template is dissolved, magnetic circular cone array is taken out from sealed bottle with tweezers, get again a 50mL beaker, pour wherein 30mL oxolane into, repeatedly clean sample 3 times, be placed on dry 15min in the baking oven of 80 DEG C again, obtain conical magnetic responsiveness collection mist material array of the present invention, the fog that can realize in static fog atmosphere is collected.
embodiment 3
A kind of bionical construction method with magnetic responsiveness collection mist material that the present embodiment proposes, the method comprises following step:
(1) preparation of template: (parameter of hole array is hole depth 3mm to go out a hole array being formed by obconic hole in the upper mechanical compaction of transparent PVC plate (being of a size of 12mm × 12mm × 6mm), the maximum gauge 500 μ m in hole, the distance between every two holes be 400 μ m).
(2) preparation of PDMS: get a 100mL beaker, take respectively 10gPDMS body, 0.5g curing compound, mixes PDMS body according to the quality of 20:1 with curing compound than ratio, fully stir with glass bar, after stirring, put it in vacuum desiccator degasification 30min for subsequent use;
(3) the tri-iron tetroxide particle that is 20nm by particle diameter adds in the template preparing in step (1), and machinery concussion is uniformly dispersed it, after dispersion, outer template remaining tri-iron tetroxide particle is wiped;
(4) take out the PDMS preparing in step (2), it is slowly cast in the template that contains tri-iron tetroxide particle, again above sample is placed in to vacuum desiccator degasification 60min, in order to obtain magnetized collection mist material, the permanent magnet that will be 0.9T by a field intensity in the process of degasification be placed in sample under.
(5) take out the sample of handling well in step (4), be placed in baking oven and at 80 DEG C, solidify 6h, in solidification process, will ensure that baking oven is placed on horizontal level.
(6) after the sample being cured in step (5) is taken out, put into a 100mL sealed bottle, in sealed bottle, add the analytically pure oxolane of 50mL again, seal bottle cap, place at normal temperatures 24h, after template is dissolved, magnetic circular cone array is taken out from sealed bottle with tweezers, get again a 50mL beaker, pour wherein 30mL oxolane into, repeatedly clean sample 3 times, be placed on dry 30min in the baking oven of 80 DEG C again, obtain conical magnetic responsiveness collection mist material array of the present invention, the fog of realizing in static fog atmosphere is collected.
embodiment 4
A kind of bionical construction method with magnetic responsiveness collection mist material that the present embodiment proposes, the method comprises following step:
(1) preparation of template: (parameter of hole array is hole depth 3mm to go out a hole array being formed by obconic hole in the upper mechanical compaction of transparent PVC plate (being of a size of 15mm × 15mm × 6mm), the maximum gauge 500 μ m in hole, the distance between every two holes be 400 μ m).
(2) preparation of PDMS: get a 100mL beaker, take respectively 15gPDMS body, 1g curing compound, mixes with curing compound PDMS body according to the ratio of mass ratio 15:1, fully stir with glass bar, after stirring, put it in vacuum desiccator degasification 45min for subsequent use;
(3) the tri-iron tetroxide particle that is 20nm by particle diameter adds in the template preparing in step (1), and machinery concussion is uniformly dispersed it, after dispersion, outer template remaining tri-iron tetroxide particle is wiped;
(4) take out the PDMS preparing in step (2), it is slowly cast in the template that contains tri-iron tetroxide particle, again above sample is placed in to vacuum desiccator degasification 30min, in order to obtain magnetized collection mist material, the permanent magnet that will be 0.9T by a field intensity in the process of degasification be placed in sample under.
(5) take out the sample of handling well in step (4), be placed in baking oven and at 80 DEG C, solidify 5h, in solidification process, will ensure that baking oven is placed on horizontal level.
(6) after the sample being cured in step (5) is taken out, put into a 100mL sealed bottle, in sealed bottle, add the analytically pure oxolane of 60mL again, seal bottle cap, place at normal temperatures 36h, after template is dissolved, magnetic circular cone array is taken out from sealed bottle with tweezers, get again a 50mL beaker, pour wherein 25mL oxolane into, repeatedly clean sample 3 times, be placed on dry 25min in the baking oven of 80 DEG C again, obtain conical magnetic responsiveness collection mist material array of the present invention, the fog of realizing in static fog atmosphere is collected.
embodiment 5
A kind of bionical construction method with magnetic responsiveness collection mist material that the present embodiment proposes, the method comprises following step:
(1) preparation of template: (parameter of hole array is hole depth 3mm to go out a hole array being formed by obconic hole in the upper mechanical compaction of transparent PVC plate (being of a size of 20mm × 20mm × 6mm), the maximum gauge 500 μ m in hole, the distance between every two holes be 400 μ m).
(2) preparation of PDMS: get a 100mL beaker, take respectively 16gPDMS body, 2g curing compound, mixes with curing compound PDMS body according to the ratio of mass ratio 8:1, fully stir with glass bar, after stirring, put it in vacuum desiccator degasification 60min for subsequent use;
(3) be that the cobalt particle of 2 μ m adds in the template preparing in step (1) by particle diameter, machinery concussion is uniformly dispersed it, after dispersion, outer template remaining cobalt particle is wiped;
(4) take out the PDMS preparing in step (2), it is slowly cast in the template that contains cobalt particle, again above sample is placed in to vacuum desiccator degasification 40min, in order to obtain magnetized circular cone array, the permanent magnet that will be 0.9T by a field intensity in the process of degasification be placed in sample under.
(5) take out the sample of handling well in step (4), be placed in baking oven and at 80 DEG C, solidify 3h, in solidification process, will ensure that baking oven is placed on horizontal level.
(6) after the sample being cured in step (5) is taken out, put into a 100mL sealed bottle, in sealed bottle, add the analytically pure oxolane of 80mL again, seal bottle cap, place at normal temperatures 48h, after template is dissolved, magnetic circular cone array is taken out from sealed bottle with tweezers, get again a 50mL beaker, pour wherein 30mL oxolane into, repeatedly clean sample 3 times, be placed on dry 15min in the baking oven of 80 DEG C again, obtain conical magnetic responsiveness collection mist material array of the present invention, the fog of realizing in static fog atmosphere is collected.
Magnetic particle in above-described embodiment can also be selected neodymium iron boron magnetic powder.Experiment shows, the conical magnetic responsiveness collection mist material array preparing by method provided by the invention, under magnetic driving effect, is collected and can be realized extensive, high-throughout fog collection for static fog.Than not having magnetic to drive the fog of swing material to collect, collecting water from runoff is significantly increased.
Claims (8)
1. a bionical construction method with magnetic responsiveness collection mist material, is characterized in that: comprise following step:
The first step, the preparation of template: mechanical compaction goes out the hole array being formed by obconic hole in substrate;
Second step, the preparation of dimethyl silicone polymer: get a beaker, PDMS body and curing compound are poured into wherein according to special ratios, fully stir with glass bar, put it in vacuum desiccator degasification for subsequent use after stirring;
The 3rd step, adds magnetic particle in the pattern hole array preparing in the first step, and machinery concussion is uniformly dispersed magnetic particle, after dispersion, outer pattern hole array remaining magnetic particle is wiped;
The 4th step, takes out the dimethyl silicone polymer preparing in second step, is cast in the template that contains magnetic particle, is placed in vacuum desiccator degasification, in the process of degasification, a block permanent magnet to be placed in template under;
The 5th step, takes out the sample of handling well in the 4th step, is placed in baking oven and solidifies;
The 6th step, after the sample being cured in the 5th step is taken out, the demoulding, obtains conical magnetic responsiveness collection mist material array, and the fog of realizing in static fog atmosphere is collected.
2. a kind of bionical construction method with magnetic responsiveness collection mist material according to claim 1, is characterized in that: the substrate in the described first step is transparent polyvinyl chloride panel.
3. a kind of bionical construction method with magnetic responsiveness collection mist material according to claim 1, is characterized in that: in described second step and the 4th step, the degasification time is 30～60min.
4. a kind of bionical construction method with magnetic responsiveness collection mist material according to claim 1, is characterized in that: the magnetic particle in the 3rd described step is Co, Fe or neodymium-iron-boron response particle.
5. a kind of bionical construction method with magnetic responsiveness collection mist material according to claim 1, it is characterized in that: in the 6th step, the concrete grammar of the demoulding is for dissolving template, concrete operations are: the sample being cured is put into a sealed bottle, in sealed bottle, add analytically pure oxolane again, seal bottle cap, place at normal temperatures 24～48h, after template is dissolved, magnetic circular cone array is taken out from sealed bottle, with oxolane cleaning 2～3 times, be placed on again in baking oven and be dried, obtain conical magnetic responsiveness collection mist material array.
6. a kind of bionical construction method with magnetic responsiveness collection mist material according to claim 1, it is characterized in that: it is 3mm that the magnetic that the 6th step obtains drives the height of circular cone in circular cone array, conical base diameter is 500 μ m～720 μ m, and the spacing between every two circular cones is 400 μ m～750 μ m.
7. a kind of bionical construction method with magnetic responsiveness collection mist material according to claim 1, is characterized in that: in the 5th step, condition of cure for solidifying 2～6h at 80 DEG C.
8. have a magnetic responsiveness collection mist material, it is characterized in that: described collection mist material is conical magnetic array, and the height of circular cone is 3mm, conical base diameter is 500 μ m～720 μ m, and the spacing between every two conical base edges is 400 μ m～750 μ m.
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| CN111292920B (en) * | 2019-12-30 | 2021-12-10 | 南京理工大学 | Super-hydrophobic magnetic response micro-rib array for directionally transporting liquid drops and preparation method thereof |
| CN111335222A (en) * | 2020-02-17 | 2020-06-26 | 河海大学常州校区 | Highway crash barrier coating with fog absorbing function |
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| CN113136922A (en) * | 2021-04-20 | 2021-07-20 | 西安交通大学 | Magnetic control conical spine array water collecting device based on mist capture |
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