CN117882710A - Method for enhancing charge property of fog drops and coating deposition efficiency - Google Patents
Method for enhancing charge property of fog drops and coating deposition efficiency Download PDFInfo
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- CN117882710A CN117882710A CN202311828680.1A CN202311828680A CN117882710A CN 117882710 A CN117882710 A CN 117882710A CN 202311828680 A CN202311828680 A CN 202311828680A CN 117882710 A CN117882710 A CN 117882710A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000002708 enhancing effect Effects 0.000 title claims abstract description 17
- 239000011248 coating agent Substances 0.000 title abstract description 9
- 238000000576 coating method Methods 0.000 title abstract description 9
- 239000007921 spray Substances 0.000 claims abstract description 62
- 238000005507 spraying Methods 0.000 claims abstract description 31
- 239000012286 potassium permanganate Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000654 additive Substances 0.000 claims abstract description 20
- 150000003839 salts Chemical class 0.000 claims abstract description 15
- 239000002253 acid Substances 0.000 claims abstract description 13
- 239000003595 mist Substances 0.000 claims description 27
- 239000000758 substrate Substances 0.000 claims description 21
- 230000000996 additive effect Effects 0.000 claims description 18
- 229910052782 aluminium Inorganic materials 0.000 claims description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 18
- 239000011888 foil Substances 0.000 claims description 18
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 12
- 229910052700 potassium Inorganic materials 0.000 claims description 12
- 239000011591 potassium Substances 0.000 claims description 12
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 7
- AAQNGTNRWPXMPB-UHFFFAOYSA-N dipotassium;dioxido(dioxo)tungsten Chemical compound [K+].[K+].[O-][W]([O-])(=O)=O AAQNGTNRWPXMPB-UHFFFAOYSA-N 0.000 claims description 6
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 claims description 6
- OQVYMXCRDHDTTH-UHFFFAOYSA-N 4-(diethoxyphosphorylmethyl)-2-[4-(diethoxyphosphorylmethyl)pyridin-2-yl]pyridine Chemical compound CCOP(=O)(OCC)CC1=CC=NC(C=2N=CC=C(CP(=O)(OCC)OCC)C=2)=C1 OQVYMXCRDHDTTH-UHFFFAOYSA-N 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 3
- 238000005538 encapsulation Methods 0.000 claims 1
- 229910052500 inorganic mineral Inorganic materials 0.000 claims 1
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- 229910052751 metal Inorganic materials 0.000 abstract description 13
- 239000002184 metal Substances 0.000 abstract description 13
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- 238000000151 deposition Methods 0.000 description 40
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- 238000012360 testing method Methods 0.000 description 8
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 7
- 239000004926 polymethyl methacrylate Substances 0.000 description 7
- 238000004062 sedimentation Methods 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 4
- 238000004659 sterilization and disinfection Methods 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- WAEMQWOKJMHJLA-UHFFFAOYSA-N Manganese(2+) Chemical compound [Mn+2] WAEMQWOKJMHJLA-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 3
- 150000002696 manganese Chemical class 0.000 description 3
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 229910001437 manganese ion Inorganic materials 0.000 description 2
- 229940099596 manganese sulfate Drugs 0.000 description 2
- 235000007079 manganese sulphate Nutrition 0.000 description 2
- 239000011702 manganese sulphate Substances 0.000 description 2
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
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- 229910018663 Mn O Inorganic materials 0.000 description 1
- 229910003176 Mn-O Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- NPYPAHLBTDXSSS-UHFFFAOYSA-N Potassium ion Chemical compound [K+] NPYPAHLBTDXSSS-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000012237 artificial material Substances 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
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- 239000001103 potassium chloride Substances 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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- 231100000419 toxicity Toxicity 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
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- Paints Or Removers (AREA)
Abstract
The invention discloses a method for enhancing charge property and wrapping deposition efficiency of fog drops, which comprises the steps of adding high-valence metal acid salt inorganic matters serving as additives into water; compared with pure water, the spray charge-to-mass ratio of the added high-valence metal acid salt can be increased by 4-5 times, wherein the enhancement effect of potassium permanganate on the charge property of fog drops is most remarkable; after the charge property of the fog drops is enhanced, the ladle-to-ladle deposition efficiency of the back fog surfaces of different wettability materials can be greatly improved by about 5 times, and the invention has potential application in certain industrial processes such as agricultural spraying, paint spraying, coating, air purification, fire extinguishing system, humidification and the like.
Description
Technical Field
The invention relates to the fields of disinfection, dust removal, spraying technology, droplet energy storage and the like, in particular to a method for enhancing the charge property of fog droplets and the wrapping deposition efficiency of high-valence metal acid salts.
Background
Enhancing the charge properties of droplets has application requirements in many fields, such as droplet power generation and energy storage, disinfection, dust removal, pesticide spraying, and the like. When the pesticide is sprayed on crops, the charge of fog drops can effectively improve the spraying uniformity and the attachment rate, enhance the coverage area of the pesticide on the surfaces of the leaves, particularly the back surfaces of the leaves, reduce the loss and drift of the pesticide liquid and reduce the pollution to the surrounding environment, thus improving the pesticide use efficiency and reducing the required pesticide consumption and the operation cost. The mist charge can also be used for a fire extinguishing and humidifying system, so that the water mist is more uniformly distributed in space, the fire extinguishing efficiency is improved, and more efficient humidification is realized. However, the main way to obtain charged spray is to use electrostatic sprayers, and the equipment needs to apply voltage of more than ten kilovolts, consume energy and increase potential safety hazards, so new spray charging technology needs to be developed.
The charge property of the fog drops can be enhanced by the mode of the additive, at present, the additive mainly comprises solid particles such as PTFE (polytetrafluoroethylene), nylon, inorganic salts such as NaCl (sodium chloride), barium titanate and the like, but the effect is not obvious, the charge property of the fog drops is not greatly increased, and along with the increase of the concentration, the effect of shielding among ions is inhibited, so that the additive for more effectively enhancing the charge property of the fog drops is urgent and necessary.
Disclosure of Invention
The invention aims to provide a method for enhancing the charge property of fog drops and the coating deposition efficiency on plant leaves with different wettability by adding inorganic high-valence metal acid salt, which can be used in the fields of liquid drop energy storage, disinfection, dust removal, pesticide spraying, spraying and the like in the future.
In order to achieve the above purpose, the present invention provides the following technical solutions: a method for enhancing charge properties of fog drops and coating deposition efficiency;
the method comprises the following steps: the high valence metal acid salt inorganic substance is added into water as an additive.
As a preferable technical scheme of the invention, the additive comprises one or more of potassium permanganate, potassium manganate, potassium perrhenate, potassium dichromate, potassium molybdate and potassium tungstate.
As a preferable technical scheme of the invention, the additive is specifically potassium permanganate.
As a preferred embodiment of the present invention, the concentration of the solution is 0.0005 mol L -1-0.005 mol L-1.
The invention also provides a method for detecting and comparing the solution with the enhanced mist charging property and the enhanced ladle sedimentation efficiency, which comprises a method for detecting the mist charging property and a method for detecting the ladle sedimentation efficiency;
The detection method of the spray charge property comprises the following steps:
preparing the solution with the enhanced mist charging property and the wrapping deposition efficiency, placing the solution into a spray can, spraying the solution onto an aluminum foil connected with an electrometer through the spray can, grounding the electrometer, recording current and charge data by the electrometer, and processing the current and charge data; faraday barrels may also be used for measurements;
the detection method of the wrapping deposition efficiency specifically comprises the following steps:
Preparing the solution with strong fog drop charge property and wrapping deposition efficiency, placing the solution into a spray can, spraying the solution onto a substrate through the spray can, and recording the deposition condition of the liquid drops on the back of the substrate.
As a preferable technical scheme of the invention, the single spraying time of the watering can is 300ms-500ms.
As a preferred technical scheme of the invention, the aluminum foil adopts a bowl-shaped aluminum foil with the size of 10cm and 3cm, and the aluminum foil is suitable for receiving all fog drops.
As a preferable technical scheme of the invention, the spray pot adopts a side spraying or top spraying mode when spraying the solution on an aluminum foil or a substrate;
The distance between the spray can and the aluminum foil or the substrate is 2/3-3/4 of the total spray length of the spray can.
As a preferable technical scheme of the invention, a high-speed camera is adopted to record the deposition condition of the liquid drops on the back fog surface of the substrate.
Compared with the prior art, the invention has the beneficial effects that:
Compared with pure water, the spray charge-to-mass ratio of the added high-valence metallate can be increased by 4-5 times, and the current can be increased by about 10 times at maximum, wherein the enhancing effect of potassium permanganate on the charge property of the fog drops is most remarkable; after the charge property of the fog drops is enhanced, the ladle-to-ladle deposition efficiency of the back fog surfaces of different wettability materials can be greatly improved by about 5 times, and the invention has potential application in certain industrial processes such as agricultural spraying, paint spraying, coating, air purification, fire extinguishing system, humidification and the like.
Drawings
FIG. 1 is a schematic diagram of a test of a detection method for the charge properties of mist droplets;
FIG. 2 is a schematic illustration of a test of the detection method of the ladle sedimentation efficiency;
FIG. 3 shows droplet charge data for pure water and aqueous solutions of high-valence metal acid salts added separately
FIG. 4 is a graph showing the pack deposition results for pure water and aqueous solutions of higher-valence metal acid salts, respectively;
FIG. 5 is a comparison of positive and negative spray critical conditions and positive and negative spray coated deposition conditions for different humidity conditions;
FIG. 6 is a graph of manganese salt charge data for different valence states;
FIG. 7 is a pack deposit diagram of manganese salts of different valence states;
FIG. 8 is a graph of potassium permanganate charge data at various concentrations;
FIG. 9 is a graph of the pack deposit results for potassium permanganate at various concentrations;
FIG. 10 is a graph comparing the results of ladle deposition of aqueous potassium permanganate solutions and water sprays under different wettability plates.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
The high valence metal acid salt comprises potassium permanganate, potassium perrhenate, potassium dichromate, potassium molybdate, potassium tungstate and the like as additives, and is characterized in that atoms in groups IV to VIIB easily lose electrons of an outer layer s orbit and an inner layer d orbit from the periodic rule of elements to form high valence metal ions with higher positive charge density, the larger the serial number of the same periodic element is, the smaller the ion radius is, the smaller the number of the same group of electron layers is, the higher the positive charge density Mn 7+ is, the polarity of Mn-O bonds is the maximum, and the capability of polarizing water molecules is the strongest, so that the capability of enhancing the charge property of fog drops is the strongest.
Other Cr-O, re-O, W-O, mo-O and other bonds have stronger polarity and have certain capability of enhancing the charge property of fog drops. Among the transition metals, there are also some other metals such as Ta, V, etc. which can also form metallo-acid salts, but because of their greater toxicity, no test has been performed, but according to rules, the acid salts of these metals should also have a certain ability to enhance the charge properties of the droplets, and are included in the present invention.
After the charge property of the fog drops is enhanced, the fog drops can be applied to a plurality of applications, and the application of the fog drops in the deposition field is described by taking the lapping deposition as an example, but the application is not limited to the application.
The embodiment of the invention provides a solution method for enhancing the charge property of fog drops and the wrapping deposition efficiency;
The preparation method of the solution comprises the following steps: the high valence metal acid salt inorganic substance is added into water as an additive.
In a further embodiment of this example, the additive comprises one or more of potassium permanganate, potassium manganate, potassium perrhenate, potassium dichromate, potassium molybdate, potassium tungstate, potassium titanate.
In a further embodiment of this example, the additive is specifically potassium permanganate.
In a further embodiment of the present example, the concentration of the solution is 0.0005 mol L-1 to 0.005 mol L-1.
The invention also provides a method for detecting and comparing the solution with the enhanced mist charging property and the enhanced ladle sedimentation efficiency, which comprises a method for detecting the mist charging property and a method for detecting the ladle sedimentation efficiency;
The detection method of the spray charge property comprises the following steps:
Preparing the solution with the enhanced mist charging property and the wrapping deposition efficiency, placing the solution into a spray can, spraying the solution onto an aluminum foil connected with an electrometer through the spray can, grounding the electrometer, recording current and charge data by the electrometer, and processing the current and charge data;
the detection method of the wrapping deposition efficiency specifically comprises the following steps:
preparing the solution with the enhanced mist charging property and the wrapping deposition efficiency, placing the solution into a spray can, spraying the solution onto a substrate through the spray can, and recording the deposition condition of the droplets on the back surface of the substrate.
In a further embodiment of this example, the single spray of the watering can takes 300ms to 500ms.
In a further embodiment of the present example, the aluminum foil is a bowl-shaped aluminum foil of 10cm by 3 cm.
In a further implementation manner of the embodiment, the spray pot adopts a side spraying or top spraying mode when spraying the solution on the aluminum foil or the substrate;
The distance between the spray can and the aluminum foil or the substrate is 2/3-3/4 of the total spray length of the spray can.
In a further implementation of this example, a high-speed camera is used to record the deposition of the liquid droplets on the back fog side of the substrate.
Further implementations of this example use a Keithley 6517B electrometer; the high SPEED camera is an i-SPEED 221 high SPEED camera.
It should be noted that: the substrate for coating deposition can be polymer artificial materials with different wettability or plant leaves. After the charged fog drops are enhanced, the application field is not limited to ladle copying deposition, and the method can be used in the fields of liquid drop energy storage, disinfection, dust removal, pesticide spraying, humidification and the like in the future;
The invention has very remarkable effect on enhancing the charge property of fog drops, and the generated charge and current can be enhanced by 10-50 times when the charge property test is carried out on the fog drops.
FIG. 1 is a graph showing the method of testing the charge properties of a spray used in the present invention. The aluminum foil is made into a bowl shape, all spray is sprayed into the bowl as far as possible during spraying, the aluminum foil is connected with the positive electrode, namely the working electrode, of the electrometer, the negative electrode is connected with the ground, and the electrometer is started to test charges and current. The charge to mass ratio is equal to the amount of charge measured divided by the mass of the spray in nC g -1.
FIG. 2 is a schematic diagram of a ladle sedimentation test apparatus according to the present invention. The test adopts side spraying, the spray can is arranged on the right side, the substrate is arranged in the middle, and the left side is provided with a high-speed camera. The substrate may be an artificial polymeric substrate, or a plant leaf. In the spraying process, a high-speed camera is used for shooting the wrapping and depositing condition of fog drops on the back fog surface of the substrate.
Figures 3a and 3b show a comparison of charge to mass ratio charge current data for different higher metalloates sprayed at a concentration of 0.001mol L -1, with reference to water. The spray can used in the experiment was a 30 mL small spray can and the charge data such as current to charge mass ratio were measured using a Keithley 6517B electrometer. The result shows that the water mist is negatively charged when the temperature is 24.5 ℃ and the humidity is 41.9%, the spray nozzle voltage is +0.02 kV, and 0.001mol L -1 potassium titanate is added, so that the charge property of the mist drops is inhibited, and the charge-to-mass ratio and the current data are reduced. In contrast, the charge-to-mass ratio and current data of the aqueous solution spray of 0.001mol L -1 of potassium molybdate, potassium tungstate, potassium dichromate, potassium perrhenate, potassium permanganate and the like are greatly enhanced. The charge-to-mass ratio of the water mist is only-40 nc g -1, while the potassium permanganate reaches-170 nc g -1, and the current peak value reached by the potassium permanganate is-1.8X10 -7 A, which is 4-5 times that of pure water. It is shown that these high valence metal acid salts can enhance the charging property of aqueous solution spray, and potassium permanganate is the best performance as an additive for enhancing charging property.
FIG. 4 shows the spray application of different salts of high valent metal to PMMA plates at a concentration of 0.001mol L -1, with reference to water, compared to the back-fog deposition. The spray can used in the experiment was a 300 mL big spray can and the back deposition of PMMA was observed with an i-SPEED 221 high SPEED camera. The results show that the deposition density of the spray can at 300 ms is greatly enhanced by adding 0.001mol L -1 potassium titanate compared with pure water, so that the charge property of fog drops is inhibited, the wrapping deposition efficiency is reduced, the wrapping deposition efficiency of spraying aqueous solutions of 0.001mol L -1 such as potassium molybdate, potassium tungstate, potassium dichromate, potassium perrhenate, potassium permanganate and the like is greatly enhanced, and the wrapping deposition efficiency is best 4-5 times higher than that of water mist by taking the potassium permanganate as an additive for enhancing the charge property.
Fig. 5 shows the critical behavior of the charge properties of the droplets at different nozzle voltages and different humidities. Because the nozzle is a polymer material, a small amount of charge can be carried under natural conditions, the humidity is measured by using a friendship PM6508 digital hygrothermograph, and the surface voltage is measured by using an FMX-003 static electricity tester. In general, when the spray nozzle voltage is positive, the sprayed mist drops are negatively charged, and when the spray nozzle voltage is negative, the sprayed mist drops are positively charged. However, humidity has a large influence at the critical point, so that the charge properties fluctuate when the mist drops are near the nozzle voltage of 0.00 kV.
Fig. 6 is a graph of spray charge to mass ratio at a concentration of 0.001 mol L -1 for manganese salts of different valence states, comparing charge current data with water as a reference. The spray can used in the experiment was a 60 mL small spray can and the charge data such as current to charge mass ratio were measured using a Keithley 6517B electrometer. Wherein the potassium permanganate manganese ion is +7 valent, the potassium manganate is +6 valent, the manganese dioxide suspension is +4 valent, and the manganese sulfate is +2 valent. To further exclude potassium ion, the charge-to-mass ratio and charge current data of potassium chloride solution at a concentration of 0.001 mol L -1 were tested as controls. The result shows that the potassium permanganate with the manganese ion of +7 has the best charge-to-mass ratio and charge current data, namely the higher the valence state is, the better the charge property is.
FIG. 7 compares the back haze deposition of different valence manganese salts/compounds including potassium permanganate, potassium manganate, manganese dioxide, manganese sulfate spray sprayed onto PMMA plates at a concentration of 0.001 mol L -1. The spray can used in the experiment is a 300 mL big spray can, the spray mode is side spray, and the deposition condition of the back of PMMA is observed by using an i-SPEED 221 high-SPEED camera. The results show that the deposition density of the manganese ion salt solution 300 ms with different valence states is the highest, and the higher the valence state is, the better the wrapping deposition efficiency is.
Fig. 8a,8b are charge-to-mass ratio and charge current data comparing potassium permanganate at different concentrations. 5 concentrations of potassium permanganate solutions were prepared, and 0.001 mol L-1,0.002 mol L-1,0.003 mol L-1,0.004 mol L-1,0.005 mol L-1. results showed that the mist droplets had the best charge effect when the molar concentration was 0.001 mol L -. The concentration of the additive increases, and the additive has an inhibiting effect on the charge property of fog drops.
FIG. 9 is a comparison of the ladle deposit efficiency at 5 concentrations of potassium permanganate solution. The spray cans used for the 0.001 mol L-1,0.002 mol L-1,0.003 mol L-1,0.004 mol L-1,0.005 mol L-1. test were 300 mL large spray cans with a side spray and the back deposition of PMMA was observed with an i-SPEED 221 high SPEED camera. The results show that when the concentration of the potassium permanganate solution is 0.001 mol L -1, the ladle deposition efficiency is the best and the deposition density is the largest.
FIG. 10 is a comparison of the coating deposition of water and 0.001 mol L -1 potassium permanganate on boards of varying surface wettability, the wettability of the four substrates to the matte and back matte surfaces being hydrophilic-hydrophilic, hydrophilic-superhydrophobic, superhydrophobic-hydrophilic, superhydrophobic-superhydrophobic, respectively. The super-hydrophobic surface is prepared by coating hydrophobic nano silicon oxide on the surface, and the wettability of the polymethyl methacrylate (PMMA) plate is hydrophilic under the untreated condition. The potassium permanganate solution of 0.001 mol L -1 is sprayed on 4 plates with different wettability, the deposition density is higher than that of water mist, and the deposition effect on the hydrophilic plate on the back is best when the front is super-hydrophobic.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. A method for enhancing the charge properties and the efficiency of the deposit by encapsulation of droplets, characterized in that a high-valence metallo-acid salt mineral is added as an additive to water.
2. An additive having enhanced mist charging properties and package deposit efficiency as defined in claim 1, wherein: the additive comprises one or more of potassium permanganate, potassium manganate, potassium perrhenate, potassium dichromate, potassium molybdate, potassium tungstate and the like.
3. A fangfa having enhanced mist charging properties and pack deposition efficiency according to claim 2, wherein: the optimal additive is specifically potassium permanganate.
4. A method of enhancing droplet charging properties and sheet deposition efficiency as claimed in claim 1, wherein: the concentration of the aqueous additive solution was 0.0005 mol L -1-0.005 mol L-1.
5. A detection contrast method for a solution with enhanced mist charging property and package deposition efficiency is characterized in that: the method comprises a detection method of spray charge property and a detection method of ladle copying deposition efficiency;
The detection method of the spray charge property comprises the following steps:
preparing the solution with strong fog drop charge property and wrapping deposition efficiency, placing the solution into a spray can, spraying the solution onto an aluminum foil connected with an electrometer through the spray can, grounding the electrometer, recording current and charge data by the electrometer, and processing the current and charge data;
the detection method of the wrapping deposition efficiency specifically comprises the following steps:
preparing the solution with the enhanced mist charging property and the wrapping deposition efficiency, placing the solution into a spray can, spraying the solution onto a substrate through the spray can, and recording the deposition condition of the droplets on the back surface of the substrate.
6. The method for detecting and comparing solutions with enhanced mist charge properties and package deposit efficiency according to claim 5, characterized in that: the single spraying time of the watering can is 300ms-500ms.
7. The method for detecting and comparing solutions with strong mist charge properties and package deposit efficiency according to claim 5, characterized in that: the aluminum foil adopts bowl-shaped aluminum foil with the thickness of 10cm and 3 cm.
8. The method for detecting and comparing solutions with enhanced mist charge properties and package deposit efficiency according to claim 5, characterized in that: the spray pot adopts a side spraying or top spraying mode when spraying the solution on an aluminum foil or a substrate;
The distance between the spray can and the aluminum foil or the substrate is 2/3-3/4 of the total spray length of the spray can.
9. The method for detecting and comparing solutions with enhanced mist charge properties and package deposit efficiency according to claim 5, characterized in that: and recording the deposition condition of the liquid drops on the back fog surface of the substrate by adopting a high-speed camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311828680.1A CN117882710A (en) | 2023-12-28 | 2023-12-28 | Method for enhancing charge property of fog drops and coating deposition efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311828680.1A CN117882710A (en) | 2023-12-28 | 2023-12-28 | Method for enhancing charge property of fog drops and coating deposition efficiency |
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