CN111303470A - Preparation method of novel electrostatic conductive ink/polypropylene dust collecting plate - Google Patents
Preparation method of novel electrostatic conductive ink/polypropylene dust collecting plate Download PDFInfo
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- CN111303470A CN111303470A CN202010299504.3A CN202010299504A CN111303470A CN 111303470 A CN111303470 A CN 111303470A CN 202010299504 A CN202010299504 A CN 202010299504A CN 111303470 A CN111303470 A CN 111303470A
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- 239000004743 Polypropylene Substances 0.000 title claims abstract description 83
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 83
- 239000000428 dust Substances 0.000 title claims abstract description 80
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- -1 polypropylene Polymers 0.000 claims abstract description 85
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000004020 conductor Substances 0.000 claims abstract description 28
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 20
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 20
- 238000001035 drying Methods 0.000 claims abstract description 19
- 238000005406 washing Methods 0.000 claims abstract description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000004033 plastic Substances 0.000 claims abstract description 16
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 239000003822 epoxy resin Substances 0.000 claims abstract description 8
- 229920006122 polyamide resin Polymers 0.000 claims abstract description 8
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 8
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical class OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000002270 dispersing agent Substances 0.000 claims abstract description 6
- 229920005989 resin Polymers 0.000 claims abstract description 6
- 239000011347 resin Substances 0.000 claims abstract description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 6
- 239000010935 stainless steel Substances 0.000 claims abstract description 6
- 238000010301 surface-oxidation reaction Methods 0.000 claims abstract description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 28
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 16
- 238000004140 cleaning Methods 0.000 claims description 13
- 239000012286 potassium permanganate Substances 0.000 claims description 11
- 238000005554 pickling Methods 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 3
- 239000012459 cleaning agent Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 18
- 238000012360 testing method Methods 0.000 description 16
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 5
- 238000005367 electrostatic precipitation Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000003760 magnetic stirring Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 229920006255 plastic film Polymers 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012717 electrostatic precipitator Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000003905 indoor air pollution Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000001338 self-assembly Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
- B03C3/47—Collecting-electrodes flat, e.g. plates, discs, gratings
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/52—Electrically conductive inks
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2477/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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Abstract
The invention relates to a preparation method of a novel electrostatic conductive ink/polypropylene dust collecting plate, which comprises the following steps of firstly carrying out surface oxidation treatment on a polypropylene plastic plate, then removing surface variegates by using saturated oxalic acid as a cleaning agent, washing with water and drying; then dissolving the epoxy resin and the polyamide resin in ethanol and glycerol solution, and adding sodium dodecyl benzene sulfonate as a dispersing agent. After fully mixing, stirring the mixture until the resin is fully dissolved, then slowly adding the carbon nano tube and the hydroxyl carbon nano tube, and continuously stirring to prepare the carbon-series conductive ink; and finally, coating conductive ink on a polypropylene plastic plate, stacking the obtained polypropylene base materials up and down, sequentially arranging the conductive materials on the parity layers in the display channel in a staggered mode according to the direction, and connecting two ends of the conductive materials through stainless steel conduction bands. The method is simple and reliable, safe and environment-friendly, and the prepared electrostatic dust collecting plate has low cost, good conductivity and water resistance and realizes good electrostatic dust collecting efficiency.
Description
Technical Field
The invention relates to a dust collecting plate preparation technology, in particular to a preparation method of a novel electrostatic conductive ink/polypropylene dust collecting plate.
Background
In recent years, with the rapid development of socioeconomic performance, more and more production, life and the like can be performed indoors. Therefore, indoor air pollution has attracted much attention. The electrostatic air purifier has the advantages of safety, high efficiency and the like, and has extremely high commercial value due to low energy consumption, high dust removal efficiency and long service life. The traditional electrostatic dust collecting plate is mainly formed by assembling a plurality of layers of perforated metal sheets, but has high one-time manufacturing cost and easy generation of electric leakage and is gradually replaced by electret materials. At present, the dust collecting plate generally applies conductive paint or conductive plate to make the surface of the substrate conductive, and uses corona discharge to charge dust particles in the air, and then the charged particles are attached to the collecting electrode under the action of electric field force, thereby achieving the dust removing and purifying effect.
Although electrostatic air purifiers have many advantages, there are still some disadvantages. For example:
(1) for a filter air purifier, the filtration efficiency depends on the dust conductivity and the amount of dust collected; the fine particles are filtered and removed efficiently, but the pressure drop required by the filter is increased, and meanwhile, the energy consumption is high and the maintenance cost is high;
(2) the accumulated dust and chemical contamination reduces the ability of the corona electrode to generate ions; the dust collecting plate needs to be cleaned or replaced frequently after being used for a period of time, and the cost is high at one time;
(3) the traditional electrostatic air purifier takes a metal plate as a dust collecting plate, although the required pressure is reduced, the collection and the cleaning are convenient and the energy consumption is small, the phenomena of electric breakdown and electric leakage exist in the using process, and the phenomenon of ozone generation is serious;
(4) the price of the conductive material of the dust collecting plate is high; frequent sparking and arcing reduce the filtration efficiency and the like.
Disclosure of Invention
Aiming at the defects, the technical problem to be solved by the invention is to provide a preparation method of a novel electrostatic conductive ink/polypropylene dust collecting plate, so as to solve the defects that the traditional electrostatic dust collecting plate is high in one-step manufacturing cost and easy to generate electric leakage.
The technical scheme for realizing the purpose of the invention is as follows: firstly, carrying out surface oxidation treatment on a polypropylene plastic plate, then synthesizing carbon-series conductive ink by using a carbon nano tube and a hydroxyl carbon nano tube, finally coating the prepared conductive ink on the polypropylene plastic plate as a conductive material, and obtaining the novel electrostatic conductive ink/polypropylene dust collecting plate through self-assembly. The preparation method comprises the following steps:
(1) ultrasonically cleaning a polypropylene plastic plate by using a sodium dodecyl benzene sulfonate solution, and then washing by using water;
(2) carrying out surface oxidation treatment on the polypropylene plastic plate obtained in the step (1) by using a potassium permanganate/sulfuric acid solution, pickling, washing with water and drying;
(3) coating conductive ink on the polypropylene plastic plate dried in the step (2), and drying in an oven to obtain the polypropylene plastic plate with the conductive material on the surface;
(4) and (4) stacking the polypropylene plastic boards obtained in the step (3) up and down to form a gas channel, sequentially arranging the conductive materials on the parity layers in the display channel in a staggered manner according to the direction, and connecting the two ends of the conductive materials by stainless steel conduction bands to finally obtain the electrostatic polypropylene dust collecting board.
The ultrasonic cleaning in the step (1) comprises the following steps: and ultrasonically cleaning the glass substrate for 10-30min by using a sodium dodecyl benzene sulfonate solution with the mass fraction of 20%.
The water washing in the step (1) comprises the following steps: ultrasonically cleaning with acetone and water at a volume ratio of 1-1.5:1 for 10-30 min.
In the step (2), the potassium permanganate/sulfuric acid solution consists of 0.3mol/L potassium permanganate and 0.1mol/L sulfuric acid, and the volume ratio of the potassium permanganate to the sulfuric acid is 0.8-1.2: 1.
The time of the surface oxidation treatment in the step (2) is 6-8h, and the temperature is 60-80 ℃.
The acid washing in the step (2) comprises the following steps: pickling with saturated oxalic acid solution for 5-20 min; the water washing comprises the following steps: washing with deionized water for 5-10 min; the drying comprises the following steps: drying in a vacuum oven at 40-60 deg.C.
The preparation method of the conductive ink in the step (3) comprises the following steps: dissolving epoxy resin and polyamide resin in ethanol and glycerol solution, and stirring at room temperature at 100 rpm for 10-30 min; then adding sodium dodecyl benzene sulfonate as a dispersing agent; after fully mixing, stirring the mixture for 1-2h at the temperature of 80-100 ℃; after the resin is fully dissolved, slowly adding the carbon nano tube and the hydroxyl carbon nano tube, and continuously stirring for 1-3h at the speed of 100 revolutions per minute; wherein the proportion of the epoxy resin, the polyamide resin, the ethanol, the glycerol, the sodium dodecyl benzene sulfonate, the carbon nano tube and the hydroxyl carbon nano tube is 10-15 g: 5-10 ml: 1-5 g: 1-3 g: 1-5 g.
The drying conditions of the oven in the step (3) are as follows: drying in a vacuum oven at 40-60 deg.C.
And (4) connecting two ends of the polypropylene plastic plate by 304 stainless steel conduction bands.
According to the invention, a layer of uniform carbon-based conductive ink with good binding force is coated on the polypropylene dust collecting plate to serve as a conductive material, and the dust collecting efficiency of the prepared dust collecting plate is tested by combining an electrostatic dust collection testing device. The result shows that the conductive ink adopted by the invention is used as the conductive material of the dust collecting plate, not only reduces the cost, but also controls the conductivity within the required range, improves the dust collecting efficiency, and effectively overcomes the problems of poor water washing resistance, high cost and the like of the traditional dust collecting plate, thereby having the following beneficial effects:
(1) the dust collecting plate has the advantages of low cost, high dust collecting efficiency and excellent water washing resistance;
(2) the carbon-based conductive ink is adopted to replace the traditional conductive coating, so that the cost is reduced, and the conductivity of the conductive ink is controlled within a required range; meanwhile, the conductive ink has mild synthesis conditions, and is safe and environment-friendly.
Drawings
FIG. 1 is a schematic view and a physical view of an electrostatic dust collecting plate;
FIG. 2 is a schematic view showing the structure of the dust collecting plate in examples 1 and 3;
FIG. 3 is a schematic view showing the structure of a dust collecting plate in example 2;
FIG. 4 is a schematic view showing the structure of the electrostatic precipitator plates stacked up and down alternately to form an air flow path according to the present invention.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
In the embodiment of the invention, the used polypropylene plate is purchased from Guanghui technology limited, the used carbon nanotube is purchased from Shenzhen nanotechnology limited, and the hydroxyl carbon nanotube is purchased from Beijing Boyu Gaokou new material technology limited. Other chemicals used in the experiments were purchased from national pharmaceutical chemicals, ltd. All chemicals were analytically pure and no further purification was required during use.
Example 1
(1) Pretreatment
a. Taking a 16cm multiplied by 5cm polypropylene plate, and ultrasonically cleaning the polypropylene plate for 30min by using a sodium dodecyl benzene sulfonate solution with the mass fraction of 20%; then ultrasonically cleaning the mixture in acetone and water for 20min, wherein the volume ratio of the acetone to the water is 1: 1;
b. respectively weighing 4.74g of potassium permanganate solid powder and 0.55mL of 98% sulfuric acid, adding water to dilute the solid powder and the 0.55mL of 98% sulfuric acid to 100mL, and then mixing the two solutions to obtain an oxidation treatment solution;
c. immersing the treated polypropylene plate into the oxidation treatment liquid, and sealing the beaker button by using a plastic film;
d. placing the beaker in a constant-temperature magnetic stirring water bath, and treating for 7h at 60 ℃;
e. after the reaction is finished, taking out the polypropylene plate, pickling the polypropylene plate for 10min by using a saturated oxalic acid solution, washing the polypropylene plate for 10min by using deionized water, and drying the polypropylene plate in a vacuum oven at 60 ℃;
(2) synthetic conductive ink
f. Dissolving 14g of epoxy resin and 8g of polyamide resin in 10ml of ethanol and 5ml of glycerol solution, and stirring at room temperature at the rate of 100 revolutions per minute for 20 min; then adding 1g of sodium dodecyl benzene sulfonate as a dispersing agent; after thorough mixing, the mixture was stirred at 90 ℃ for 1 h; after the resin is fully dissolved, slowly adding 1g of carbon nano tube and 2.5g of hydroxyl carbon nano tube, and continuously stirring for 2 hours at the speed of 100 revolutions per minute;
(3) dust collecting plate preparation and assembly
g. Covering the front surface of the polypropylene plate with an adhesive tape, wherein the middle of the polypropylene plate is 11cm in length and 1.5cm in width, and the polypropylene plate is left empty and used for coating conductive ink;
h. placing the prepared polypropylene plate coated with the conductive ink in a vacuum oven at 60 ℃ for drying to obtain a polypropylene dust collecting plate with a conductive material on the surface;
i. stacking the polypropylene plates up and down, wherein the conductive material direction of the odd-numbered polypropylene plates faces to the left, and the conductive material direction of the even-numbered polypropylene plates faces to the right, and the polypropylene plates are sequentially staggered;
j. connecting the left end and the right end of the polypropylene plate by two stainless steel conduction bands respectively to form a conductive path;
k. the distance between every two polypropylene dust collecting plates is 0.5 cm;
testing the dust collection efficiency of the dust collection plate in a self-assembled electrostatic precipitation testing device. At a wind speed of 0.5m/s, for PM2.5The dust collection efficiency is as high as 93.85%.
Example 2
(1) Pretreatment
a. Taking a 16cm multiplied by 5cm polypropylene plate, and ultrasonically cleaning the polypropylene plate for 30min by using a sodium dodecyl benzene sulfonate solution with the mass fraction of 20%; then ultrasonically cleaning the mixture in acetone and water for 20min, wherein the volume ratio of the acetone to the water is 1: 1;
b. respectively weighing 4.74g of potassium permanganate solid powder and 0.55mL of 98% sulfuric acid, adding water to dilute the solid powder and the 0.55mL of 98% sulfuric acid to 100mL, and then mixing the two solutions to obtain an oxidation treatment solution;
c. immersing the treated polypropylene plate into the oxidation treatment liquid, and sealing the beaker button by using a plastic film;
d. placing the beaker in a constant-temperature magnetic stirring water bath, and treating for 7h at 60 ℃;
e. after the reaction is finished, taking out the polypropylene plate, pickling the polypropylene plate for 10min by using a saturated oxalic acid solution, washing the polypropylene plate for 10min by using deionized water, and drying the polypropylene plate in a vacuum oven at 60 ℃;
(2) synthetic conductive ink
f. Dissolving 14g of epoxy resin and 8g of polyamide resin in 10ml of ethanol and 5ml of glycerol solution, and stirring at room temperature at the rate of 100 revolutions per minute for 20 min; then 1g of sodium dodecylbenzenesulfonate was added as a dispersant. After thorough mixing, the mixture was stirred at 90 ℃ for 1 h; after the resin is fully dissolved, slowly adding 1g of carbon nano tube and 2.5g of hydroxyl carbon nano tube, and continuously stirring for 2 hours at the speed of 100 revolutions per minute;
(3) dust collecting plate preparation and assembly
g. Covering the front surface of the polypropylene plate with an adhesive tape, wherein the middle of the polypropylene plate is 11cm in length and 5cm in width, and leaving a space for coating conductive ink;
h. placing the prepared polypropylene plate coated with the conductive ink in a vacuum oven at 60 ℃ for drying to obtain a polypropylene dust collecting plate with a conductive material on the surface;
i. stacking the polypropylene plates up and down, wherein the conductive material direction of the odd-numbered polypropylene plates faces to the left, and the conductive material direction of the even-numbered polypropylene plates faces to the right, and the polypropylene plates are sequentially staggered;
j. connecting the left end and the right end of the polypropylene plate by two stainless steel conduction bands respectively to form a conductive path;
k. the distance between every two polypropylene dust collecting plates is 0.5 cm;
testing the dust collection efficiency of the dust collection plate in a self-assembled electrostatic precipitation testing device. At a wind speed of 0.5m/s, for PM2.5The dust collection efficiency is as high as 91.25%.
Example 3
(1) Pretreatment
a. Taking a 16cm multiplied by 5cm polypropylene plate, and ultrasonically cleaning the polypropylene plate for 30min by using a sodium dodecyl benzene sulfonate solution with the mass fraction of 20%; then ultrasonically cleaning the mixture in acetone and water for 20min, wherein the volume ratio of the acetone to the water is 1: 1;
b. respectively weighing 4.74g of potassium permanganate solid powder and 0.55mL of 98% sulfuric acid, adding water to dilute the solid powder and the 0.55mL of 98% sulfuric acid to 100mL, and then mixing the two solutions to obtain an oxidation treatment solution;
c. immersing the treated polypropylene plate into the oxidation treatment liquid, and sealing the beaker button by using a plastic film;
d. placing the beaker in a constant-temperature magnetic stirring water bath, and treating for 7h at 60 ℃;
e. after the reaction is finished, taking out the polypropylene plate, pickling the polypropylene plate for 10min by using a saturated oxalic acid solution, washing the polypropylene plate for 10min by using deionized water, and drying the polypropylene plate in a vacuum oven at 60 ℃;
(2) synthetic conductive ink
f. Dissolving 14g of epoxy resin and 8g of polyamide resin in 10ml of ethanol and 5ml of glycerol solution, and stirring at room temperature at the rate of 100 revolutions per minute for 20 min; then 1g of sodium dodecylbenzenesulfonate was added as a dispersant. After thorough mixing, the mixture was stirred at 90 ℃ for 1 h; after the resin is fully dissolved, slowly adding 1g of carbon nano tube and 2.5g of hydroxyl carbon nano tube, and continuously stirring for 2 hours at the speed of 100 revolutions per minute;
(3) dust collecting plate preparation and assembly
g. Covering the front surface of the polypropylene plate with an adhesive tape, wherein the middle of the polypropylene plate is 11cm in length and 1.5cm in width, and the polypropylene plate is left empty and used for coating conductive ink;
h. placing the prepared polypropylene plate coated with the conductive ink in a vacuum oven at 60 ℃ for drying to obtain a polypropylene dust collecting plate with a conductive material on the surface;
i. stacking the polypropylene plates up and down, wherein the conductive material direction of the odd-numbered polypropylene plates faces to the left, and the conductive material direction of the even-numbered polypropylene plates faces to the right, and the polypropylene plates are sequentially staggered;
j. connecting the left end and the right end of the polypropylene plate by two stainless steel conduction bands respectively to form a conductive path;
k. the distance between every two polypropylene dust collecting plates is 1.5 cm;
testing the dust collection efficiency of the dust collection plate in a self-assembled electrostatic precipitation testing device. At a wind speed of 0.5m/s, for PM2.5The dust collection efficiency is as high as 90.33%.
The dust collecting efficiency of the dust collecting plate is tested by using the self-assembled electrostatic dust collection testing device, and the result is as follows:
the self-assembled electrostatic dust removal testing device is formed by staggering 10 polypropylene plates with the size of 16cm multiplied by 5cm, the wind speed is controlled to be 0.5m/s, the concentrations of particles with different particle sizes at an inlet and an outlet are recorded in an experiment in combination with a laser haze measuring instrument, and the dust collection efficiency is calculated according to the following formula:
in the formula, CGo out: the concentration of outlet particles; cInto: the concentration of inlet particles.
The dust collecting efficiency of the dust collecting plate prepared in example 1, i.e., the conductive material region was 11cm × 1.5cm, and the interval between the plates was 0.5cm for particulate contaminants of each particle size, is shown in table 1.
TABLE 1 dust collecting efficiency test results for particles of different particle diameters at an interplate spacing of 0.5cm for an area of conductive material of 11cm × 1.5cm
| Particle size | Dust collecting efficiency (%) |
| PM1.0 | 90.88 |
| PM2.5 | 93.85 |
| PM10 | 94.45 |
The dust collecting efficiency of the dust collecting plate prepared in example 2, i.e., the conductive material region was 11cm × 5cm, and the interval between the plates was 0.5cm for particulate contaminants of each particle size, is shown in table 2.
TABLE 2 dust collecting efficiency test results for particles of different particle diameters at an interplate distance of 0.5cm when the conductive material area is 11cm × 5cm
| Particle size | Dust collecting efficiency (%) |
| PM1.0 | 87.84 |
| PM2.5 | 91.25 |
| PM10 | 93.36 |
The dust collecting efficiency of the dust collecting plate prepared in example 3, i.e., the conductive material region was 11cm × 1.5cm, and the interval between the plates was 1.5cm for particulate contaminants of each particle size, is shown in table 3.
TABLE 3 dust collecting efficiency test results for particles of different particle diameters at an interplate spacing of 1.5cm for an area of conductive material of 11cm × 1.5cm
| Particle size | Dust collecting efficiency (%) |
| PM1.0 | 82.35 |
| PM2.5 | 90.33 |
| PM10 | 88.62 |
The ozone emission of the self-assembled electrostatic precipitator test device was analyzed using an ozone monitor, and the results are shown in table 4.
TABLE 4 ozone emission test results of self-assembled electrostatic precipitation test device
| Device status | Air flow (m)3/min) | Dust collecting efficiency (%) | Ozone level (ppm) |
| Opening device | 5.00 | 93.2 ± 5.0 | Is free of |
| Closing device | 5.00 | 10.2 ± 2.5 | Is free of |
By applying the prepared electrostatic conductive ink/polymerThe propylene dust collecting plate was subjected to dust collection test, and it was found that the self-assembled device was responsible for PM1.0The electrostatic dust collection efficiency can reach 90.88%, PM2.5The electrostatic dust collection efficiency can reach 93.85 percent, and the PM can be treated10The electrostatic dust collection efficiency can reach 94.45 percent, which shows that the electrostatic dust collection plate prepared by using the conductive ink as the conductive material on the surface of the polypropylene plastic plate has excellent electrostatic dust collection effect.
Claims (10)
1. A preparation method of a novel electrostatic conductive ink/polypropylene dust collecting plate is characterized by comprising the following steps: the method comprises the following steps:
(1) ultrasonically cleaning a polypropylene plastic plate by using a sodium dodecyl benzene sulfonate solution, and then washing by using water;
(2) carrying out surface oxidation treatment on the polypropylene plastic plate obtained in the step (1) by using a potassium permanganate/sulfuric acid solution, pickling, washing with water and drying;
(3) coating conductive ink on the polypropylene plastic plate dried in the step (2), and drying in an oven to obtain the polypropylene plastic plate with the conductive material on the surface;
(4) and (4) stacking the polypropylene plastic boards obtained in the step (3) up and down to form a gas channel, sequentially arranging the conductive materials on the parity layers in the display channel in a staggered manner according to the direction, and connecting the two ends of the conductive materials by stainless steel conduction bands to finally obtain the electrostatic polypropylene dust collecting board.
2. The method of claim 1, wherein: the ultrasonic cleaning in the step (1) comprises the following steps: and ultrasonically cleaning the glass substrate for 10-30min by using a sodium dodecyl benzene sulfonate solution with the mass fraction of 20%.
3. The method of claim 1, wherein: the water washing in the step (1) comprises the following steps: ultrasonically cleaning with acetone and water at a volume ratio of 1-1.5:1 for 10-30 min.
4. The method of claim 1, wherein: in the step (2), the potassium permanganate/sulfuric acid solution consists of 0.3mol/L potassium permanganate and 0.1mol/L sulfuric acid, and the volume ratio of the potassium permanganate to the sulfuric acid is 0.8-1.2: 1.
5. The method of claim 1, wherein: the time of the surface oxidation treatment in the step (2) is 6-8h, and the temperature is 60-80 ℃.
6. The method of claim 1, wherein: the acid washing in the step (2) comprises the following steps: pickling with saturated oxalic acid solution for 5-20 min; the water washing comprises the following steps: washing with deionized water for 5-10 min; the drying comprises the following steps: drying in a vacuum oven at 40-60 deg.C.
7. The method of claim 1, wherein: the preparation method of the conductive ink in the step (3) comprises the following steps: dissolving epoxy resin and polyamide resin in ethanol and glycerol solution, and stirring at room temperature at 100 rpm for 10-30 min; then adding sodium dodecyl benzene sulfonate as a dispersing agent; after fully mixing, stirring the mixture for 1-2h at the temperature of 80-100 ℃; after the resin is fully dissolved, the carbon nano-tubes and the hydroxyl carbon nano-tubes are slowly added, and the stirring is continued for 1 to 3 hours at the speed of 100 revolutions per minute.
8. The method of claim 7, wherein: the proportion of the epoxy resin, the polyamide resin, the ethanol, the glycerol, the sodium dodecyl benzene sulfonate, the carbon nano tube and the hydroxyl carbon nano tube is 10-15 g: 5-10 ml: 1-5 g: 1-3 g: 1-5 g.
9. The method of claim 1, wherein: the drying conditions of the oven in the step (3) are as follows: drying in a vacuum oven at 40-60 deg.C.
10. An electrostatic conductive ink/polypropylene dust collecting plate prepared by the method of any one of claims 1 to 9.
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| CN105536994A (en) * | 2016-01-05 | 2016-05-04 | 东华大学 | Preparing method for electrostatic type air purifier dust collecting plates |
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| CN111205498A (en) * | 2020-03-20 | 2020-05-29 | 桂林电子科技大学 | Preparation method of electrostatic conductive ink/polypropylene dust collecting plate |
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| CN105536994A (en) * | 2016-01-05 | 2016-05-04 | 东华大学 | Preparing method for electrostatic type air purifier dust collecting plates |
| CN106046982A (en) * | 2016-06-30 | 2016-10-26 | 嘉兴市高正高分子材料有限公司 | High-dispersity water-based carbon nanotube conductive slurry |
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