CN206168083U - Filtering material and this filtering material's of application filtration cell spare excessively - Google Patents
Filtering material and this filtering material's of application filtration cell spare excessively Download PDFInfo
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- CN206168083U CN206168083U CN201620381402.5U CN201620381402U CN206168083U CN 206168083 U CN206168083 U CN 206168083U CN 201620381402 U CN201620381402 U CN 201620381402U CN 206168083 U CN206168083 U CN 206168083U
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- porous material
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- 239000000463 material Substances 0.000 title claims abstract description 127
- 238000001914 filtration Methods 0.000 title claims abstract description 69
- 239000011148 porous material Substances 0.000 claims abstract description 84
- 239000011248 coating agent Substances 0.000 claims abstract description 51
- 238000000576 coating method Methods 0.000 claims abstract description 51
- 229910052751 metal Inorganic materials 0.000 claims abstract description 36
- 239000002184 metal Substances 0.000 claims abstract description 36
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 12
- 239000000956 alloy Substances 0.000 claims abstract description 12
- 239000000126 substance Substances 0.000 claims abstract description 11
- 239000006260 foam Substances 0.000 claims description 28
- 239000002245 particle Substances 0.000 claims description 20
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 17
- 239000007787 solid Substances 0.000 claims description 16
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical group [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 239000011701 zinc Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 4
- 239000010931 gold Substances 0.000 claims description 4
- 239000006104 solid solution Substances 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 3
- 229910052961 molybdenite Inorganic materials 0.000 claims description 3
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 3
- 229910001316 Ag alloy Inorganic materials 0.000 claims description 2
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 229910001080 W alloy Inorganic materials 0.000 claims description 2
- 229910052793 cadmium Inorganic materials 0.000 claims description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- 229910052763 palladium Inorganic materials 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 239000010937 tungsten Substances 0.000 claims description 2
- 238000004887 air purification Methods 0.000 abstract description 9
- 239000000758 substrate Substances 0.000 abstract description 8
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 239000003792 electrolyte Substances 0.000 description 19
- 238000005096 rolling process Methods 0.000 description 17
- 238000000034 method Methods 0.000 description 11
- 238000002360 preparation method Methods 0.000 description 11
- 230000008021 deposition Effects 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 238000001035 drying Methods 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000007788 roughening Methods 0.000 description 6
- 238000005406 washing Methods 0.000 description 5
- TXUICONDJPYNPY-UHFFFAOYSA-N (1,10,13-trimethyl-3-oxo-4,5,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl) heptanoate Chemical compound C1CC2CC(=O)C=C(C)C2(C)C2C1C1CCC(OC(=O)CCCCCC)C1(C)CC2 TXUICONDJPYNPY-UHFFFAOYSA-N 0.000 description 4
- 229910021626 Tin(II) chloride Inorganic materials 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 239000013618 particulate matter Substances 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 239000001119 stannous chloride Substances 0.000 description 4
- 235000011150 stannous chloride Nutrition 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- 206010070834 Sensitisation Diseases 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000008313 sensitization Effects 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229910000635 Spelter Inorganic materials 0.000 description 2
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 2
- QCEUXSAXTBNJGO-UHFFFAOYSA-N [Ag].[Sn] Chemical compound [Ag].[Sn] QCEUXSAXTBNJGO-UHFFFAOYSA-N 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 239000011238 particulate composite Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(I) nitrate Inorganic materials [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 229910016747 AlCl3—NaCl—KCl Inorganic materials 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910018054 Ni-Cu Inorganic materials 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 229910018481 Ni—Cu Inorganic materials 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 1
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical compound [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 1
- 238000004210 cathodic protection Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 235000014593 oils and fats Nutrition 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- UUWCBFKLGFQDME-UHFFFAOYSA-N platinum titanium Chemical compound [Ti].[Pt] UUWCBFKLGFQDME-UHFFFAOYSA-N 0.000 description 1
- 229940093429 polyethylene glycol 6000 Drugs 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001432 tin ion Inorganic materials 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
Landscapes
- Filtering Materials (AREA)
Abstract
The utility model discloses a filtering material and this filtering material's of application filtration cell spare excessively. Filtering material includes the porous material substrate, has an electroplated coating in the hole surface adhesion of porous material substrate, the electroplated coating contains alloy or metal simple substance. When the electroplated coating attaches to the hole surface of porous material substrate, can effectively reduce the pore size under the prerequisite that quantity is invariable that keeps the hole, promote filter fineness under the prerequisite that keeps higher porosity. The electroplated coating of compriseing alloy or metal simple substance has better wearability, corrosion resistance, high temperature resistant, can show the life who prolongs the porous material substrate. Gained filtering material's formability is good, intensity is high, consequently can make the filtration cell spare of crossing of various shapes. Compare with corresponding the ground substrate, filtering material's the average pore size is showing and is reducing, and filter fineness is higher, can satisfy indoor air purification requirements for quality.
Description
Technical field
This utility model is related to a kind of filtering material and the filter element using the filtering material.
Background technology
The method in prior art control aperture is predominantly used by changing the collocation between powder morphology, different-grain diameter powder
Realize that the preparation technology parameters such as the regulation and control to aperture, price adjustment rolling mill practice, sintering schedule regulate and control.But change powder changing
There is considerable influence to the porosity of film while aperture, whole Pore structure and morphology and tortuosity etc. all will change.It is logical
Oversintering system adjustment aperture, the requirement to thermal field is higher, and the hole of aperture≤5 μm is easily closed under conditions of temperature is higher
Closed pore is formed, to needing the requirement for preparing small-bore membrane material to be difficult to meet, through-hole rate reduces air permeability and declines；For example, with-
The electrolytic nickel powder of 400 mesh is multicellular metal foil prepared by raw material, and aperture is 15-20 μm, flux >=3000m3/m2·h·kpa；With
5-10 μm of electrolytic nickel powder is multicellular metal foil prepared by raw material, and aperture is 5-10 μm, flux about 300m3/m2·h·kpa；With
10-15 μm of carbonyl nickel powder is multicellular metal foil prepared by raw material, and aperture is 14-18 μm, flux about 2000m3/m2Hkpa,
Aperture flux while being greatly reduced is limited.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of filtering material and preparation method thereof, the filtering material
Aperture it is less, porosity is high and preparation method is simple.This utility model is also provided using the filter element of the filtering material.
This utility model solves the technical scheme that adopted of above-mentioned technical problem for a kind of filtering material, the filtering material
Including porous material base material, electroplated coating is attached with the pore surface of porous material base material, the electroplated coating includes alloy
Or metal simple-substance.When electroplated coating is attached to the pore surface of porous material base material, can be in the constant number of retaining hole
Under the premise of effectively reduce pore size, lift filtering accuracy on the premise of higher porosity is kept.By alloy or metal list
The electroplated coating of matter composition has more preferable wearability, corrosion resistance, high temperature resistant, can significantly extend making for porous material base material
Use the life-span.
Further, the electroplated coating also includes homodisperse solid particle.Solid particle is in electroplated coating surface heap
Product, not only forms secondary hole, and is obviously improved the specific surface area of filtering material；If electroplated coating is smooth and thicker,
Then coating is easy to fall off and causes to block hole, therefore the aperture of final filtration material is difficult to reach nanoscale.With smooth coating
Compare, the coating containing solid particle can make the aperture of filtering material reach nanoscale and keep higher porosity.
Further, the mean diameter of the solid particle is 0.01-19 μm.If the particle diameter of solid particle is excessive, can
The poor adhesive force of electroplated coating, gained filtering material can be caused easily to make hole be blocked because of coming off for coating；If solid
The particle diameter of grain is too small, then gained coating surface is smooth, and the specific surface area of gained filtering material is little.Further, the solid
Grain refers to oxide, carbide, boride, nitride of various indissolubles etc., such as SiC and MoS2。
Further, the porous material base material is foam metal.Further, the foam metal is nickel foam, nickel foam
Any one in alloy, foam copper, foam copper alloy, foamed aluminium, foam aluminium alloy.Foam metal is a kind of with superelevation hole
The three-dimensional netted material of gap rate, but its larger aperture limits its application.Due to the aperture of foam metal it is larger therefore many
Porous materials base material can be more preferably the foam metal after compressing.Further, the porous material base material is steeped by least two-layer
Foam metal stacked compression is formed.The average pore size of the foam metal is 0.01-0.5mm, and porosity is 60-95%.
Further, the boil down to rolling.When the porous material base material is formed by one layer of foam metal rolling, pass through
The aperture of rolling porous membrane and thickness distribution are uniform.When the porous material base material is folded by least two layers of foam metal
Plus rolling is when forming, by rolling porous membrane, not only aperture and thickness distribution are uniform, and each layer foam metal it
Between adhesion it is higher, be not easily stripped.Further, the rolling is hot rolling or cold rolling.
Further, the pressure of the rolling is 50-600T (1T is equal to 133.322Pa).Draught pressure is excessive, may cause
The hole of final filtration material is too small, and when filtering material is thicker, filtration resistance is dramatically increased.Draught pressure is too small, not only hole
The adhesion that footpath is difficult to reach between requirement, and adjacent foam metal is poor.The pressure of the rolling is preferably 200-400T.It is logical
The size of draught pressure is overregulated, the filtering material of different pore size can be prepared, the filtering material of different pore size can enter one
Step composition multistage filtering element.
Further, the porous material base material is by solid solution alloy, the metal simple-substance of face-centred cubic structure or body-centered cubic
The metal polyporous material of phase is constituted based on the metal simple-substance of structure, itself and publication No. for CN104759629A Chinese patent
The preparation method of the flexible, porous metal film described in application is similar or is made using existing other similar approach.Above-mentioned porous
Material is because of the restriction of its preparation technology, and its aperture is generally large, and when indoor air purification is applied to, filtering accuracy is poor, it is difficult to
Meet indoor air purification prescription.Using said method, with the porous material as base material, by the hole table in base material
Face increases electroplated coating, the aperture of base material can be effectively reduced, so as to lift its filtering accuracy.Further, the porous material
The average pore size of base material is 5-100 μm, and porosity is 25-70%.
Further, the metal simple-substance is zinc, nickel, tungsten, magnesium, titanium, palladium, cadmium, gold, silver, stannum, copper or aluminum；The alloy is
Kirsite, aluminium alloy, nickel alloy, tungsten alloy, silver alloy or magnesium alloy.The materialization of the electroplated coating being made up of above-mentioned material is stablized
Property is good, can be obviously improved the service life and use range of porous material base material.When electroplated coating material is zinc or aluminum, energy
Play a part of cathodic protection, lift the decay resistance of porous material base material.
The preparation of above-mentioned filtering material is comprised the following steps：(1) electrolyte of the cation comprising coating metal is prepared；
(2) with coating metal as anode, porous material base material is negative electrode, by anode and negative electrode insertion electrolyte；(3) in anode and the moon
Applied voltage between pole, the cation for making coating metal is reduced and formation of deposits plating in the pore surface of porous material base material
Coating.By the time of control deposition, the pore structure of final filtration material can be regulated and controled.When porous material base material matter it is soft and thin
When, unfold base material redeposited after fixation, so that coating is evenly distributed.Compared with traditional preparation technology, process is simple
And production efficiency is high.
Preferably the pore surface of porous material base material is surface-treated before the deposition, surface treatment include clean,
Adjustment substrate surface flatness and roughening treatment, its role is to make the adhesive force of electroplated coating higher, difficult for drop-off, use
Life-span length.Wherein, the effect of cleaning is the impurity that oils and fatss of removal pore surface etc. affect coating adhesive strength；Adjustment base material
The flatness on surface is in order that coating is evenly distributed；Roughening treatment is that substrate pores table is lifted using Mechanical Method or chemical method
The surface roughness in face, so as to increase the contact area of electroplated coating and pore surface, lifts adhesion therebetween.
Further, for the electroplated coating for obtaining evenly and the speed for lifting deposition, can before the deposition to base material
Pore surface carry out sensitized treatment；The sensitized treatment includes that base material is soaked in into the stannous chloride that PH is 4.0-4.5 is sensitized
In liquid and subsequent water-washing process.
Further, homodisperse solid particle is also contained in the electrolyte.Under certain voltage effect, electrolyte
In coating metal cation and solid particle be co-deposited to the pore surface of base material, solid particle is piled up in coating surface, is made
The surface roughness and specific surface area of coating is obviously improved.
Further, the mean diameter of the solid particle is 0.01-19 μm.If the particle diameter of solid particle is excessive, can
The poor adhesive force of electroplated coating, gained filtering material can be caused easily to make hole be blocked because of coming off for coating；If solid
The particle diameter of grain is too small, then gained coating surface is smooth, and the specific surface area of gained filtering material is little.Further, the solid
Grain refers to oxide, carbide, boride, nitride of various indissolubles etc., such as SiC and MoS2。
Further, said method is additionally included in before deposition and carries out pre-rolling to the porous material base material.By rolling in advance
System can further reduce the aperture of porous material base material, reduce the thickness of coating and the time of deposition.Further, the porous
Material substrate is superimposed rolling and forms by least two foam metals, and the base material of multilayer foam metal rolling has preferably by force
Degree.Preferably, the pressure of the rolling is 50-600T.
The formability of the porous material base material adopted due to this utility model is good, intensity is high, therefore can correspondence
Filtering material make variously-shaped filter element.Or according to the shape of existing filter element, in the porous material of correspondingly-shaped
Increase electroplated coating on material base material.The filtering material of different pore size can further constitute multistage filtering element.The filter element
Gas purification is applied to, when being particularly applied to indoor air purification, because correspondingly porous material base material is compared, is had
The average pore size of the filtering material of electroplated coating is substantially reduced, therefore its filtering accuracy is higher, can meet indoor air purification
Prescription.
Description of the drawings
Fig. 1 is the structural representation of filtering material.
Specific embodiment
Embodiment 1
Adopt the porous material that Ni-Cu solid solution alloys are constituted for base material (1), its average pore size is 20 μm, porosity is
50%, the preparation method of corresponding filtering material is as follows：1) electrolyte is prepared：The electrolyte contains KCl, 78g/ of 185g/L
The ZnCl of L2, 24g/L H3BO3, 32g/L BFJ-23A and 1.1mL/L ZN-28, uniform using ultrasonic disperse, PH is 5-
5.5；2) base material (1) surface treatment：First, adopt particle mean size is carried out for 10 μm of sand material to the pore surface (2) of base material (1)
Roughening treatment, process time is 10min；Then, base material (1) be impregnated in into concentration for 50g/L, the sodium hydroxide that temperature is 80 DEG C
In solution and 30min is kept, then with washes of absolute alcohol three times, drying for standby；3) sensitized treatment：With PH as 4.0-4.5
Stannous chloride solution is sensitizer, base material (1) is placed in sensitizer and impregnates 30min, is then taken out and washing and drying；4) with quick
Base material (1) after change is negative electrode, and with zinc bar as anode, by anode and negative electrode insertion electrolyte, distance therebetween is
15cm；5) at 30 DEG C, applied voltage between the anode and cathode, the electric current density for making negative electrode is 2.5A/dm2, then electrolyte
In pore surface (2) of the zinc ion in base material (1) be reduced and the uniform spelter coating of formation of deposits (3).Through the heavy of 30min
Product, the structural representation of gained filtering material is shown in Fig. 1, and its average pore size is 7 μm, porosity is 43%, and filtering accuracy is significantly carried
Rise.When indoor air purification is used for, filter efficiency more than 90%, using the filtering accuracy after June still more than 85%,
And spelter coating (3) does not have any obscission.
Embodiment 2
Foamed aluminium is adopted for porous material base material (1), its average pore size is 0.3mm, and porosity is 80%, in the pressure of 300T
2min is rolled under power, the average pore size of the foamed aluminium after rolling is 0.14mm, and porosity is 71%；The system of corresponding filtering material
Preparation Method is as follows：1) electrolyte is prepared：The electrolyte is AlCl3- NaCl-KCl ternarys melt salt system, comprising parts by weight
For 11% NaCl, 11% KCl and 78% AlCl3；2) base material (1) surface treatment：First, particle mean size is adopted for 15 μm
Sand material roughening treatment is carried out to the pore surface (2) of base material (1), process time is 10min；Then, base material (1) impregnated in
Concentration is in 60g/L, the sodium radio-phosphate,P-32 solution that temperature is 80 DEG C and keeps 30min, and then with washes of absolute alcohol three times, drying is standby
With；3) sensitized treatment：Base material (1) is placed in sensitizer and is impregnated by the stannous chloride solution with PH as 4.0-4.5 as sensitizer
30min, then takes out and washing and drying；4) with the base material (1) after sensitization as negative electrode, with aluminium bar as anode, by anode and negative electrode
In insertion electrolyte, distance therebetween is 15cm；5) at 160 DEG C, between the anode and cathode applied voltage, makes negative electrode
Electric current density is 5A/dm2, then pore surface (2) of the aluminium ion in electrolyte in base material (1) is reduced and formation of deposits is uniform
Aluminized coating (3).Through the deposition of 240min, the structural representation of gained filtering material is shown in Fig. 1, and its average pore size is 30 μm,
Porosity is 59%, and filtering accuracy is obviously improved.When indoor air purification is used for, filter efficiency uses 6 more than 90%
Filtering accuracy after month is still more than 85%, and aluminized coating (3) does not have any obscission.
Embodiment 3
It is porous material base material (1) that two average pore sizes are adopted for the nickel foam that 0.25mm, porosity are 90%, by two
Nickel foam is superimposed and the hot rolling 4min under the pressure of 350T, and the average pore size after rolling is 0.08mm, and porosity is 79%；It is right
The preparation method of the filtering material answered is as follows：1) electrolyte is prepared：SnSO of the electrolyte comprising 0.1mol/L4、0.2mol/
The K of L4P2O7, 0.01mol/L AgNO3With the polyethylene glycol 6000 of 50mg/L, uniform using ultrasonic disperse, its PH is 7.5-
8.5；2) base material (1) surface treatment：First, adopt particle mean size is carried out for 20 μm of sand material to the pore surface (2) of base material (1)
Roughening treatment, process time is 10min；Then, base material (1) be impregnated in into the sodium phosphate that concentration is 60g/L, temperature is 80 DEG C molten
In liquid and 30min is kept, then with washes of absolute alcohol three times, drying for standby；3) sensitized treatment：Chlorine with PH as 4.0-4.5
It is sensitizer to change stannous solution, base material (1) is placed in sensitizer and impregnates 30min, is then taken out and washing and drying；4) with sensitization
Base material (1) afterwards is negative electrode, with platinum titanium net as anode, in the electrolyte that anode and negative electrode are inserted, and distance therebetween
For 15cm；5) at 25 DEG C, applied voltage between the anode and cathode, the electric current density for making negative electrode is 3A/dm2, then electrolyte
In pore surface (2) in base material (1) of tin ion and silver ion be reduced and the uniform tin-silver coating of formation of deposits (3), Jing
The deposition of 180min is crossed, the structural representation of gained filtering material is shown in Fig. 1, its average pore size is 15 μm, porosity is 67%, mistake
Filter precision is obviously improved.When indoor air purification is used for, filter efficiency more than 90%, using the filtering accuracy after June
Still more than 85%, and tin-silver coating (3) does not have any obscission.
Embodiment 4
Adopt the porous material that Ni-Cr solid solution alloys are constituted for base material (1), its average pore size is 20 μm, porosity is
45%；The preparation method of corresponding filtering material is as follows：1) electrolyte is prepared：The electrolyte contains KCl, 78g/ of 185g/L
The ZnCl of L2, 24g/L H3BO3, 32g/L BFJ-23A, 1.1mL/L ZN-28 and 5g/L SiC particulate (4), its PH be 5-
5.5, the mean diameter of SiC particulate (4) is 1 μm, makes SiC particulate (4) be uniformly dispersed using ultrasonic disperse；2) base material (1) surface
Process：First, adopt particle mean size carries out roughening treatment, process time for 10 μm of sand material to the pore surface (2) of base material (1)
For 10min；Then, base material (1) impregnated in into concentration to be in 50g/L, the sodium hydroxide solution that temperature is 80 DEG C and keep
30min, then with washes of absolute alcohol three times, drying for standby；3) sensitized treatment：Stannous chloride solution with PH as 4.0-4.5
For sensitizer, base material (1) is placed in sensitizer and impregnates 30min, then taken out and washing and drying；4) with the base material after sensitization
(1) it is negative electrode, with zinc bar as anode, by anode and negative electrode insertion electrolyte, distance therebetween is 15cm；5) at 30 DEG C
Under, applied voltage between the anode and cathode, the electric current density for making negative electrode is 3A/dm2, then hole of the zinc ion in base material (1)
Surface (2) is reduced and is co-deposited with SiC particulate (4) and forms uniform zinc-SiC particulate composite coating (3), through 180min's
Deposition, the structural representation of gained filtering material is shown in Fig. 1, and its average pore size is 1 μm, and porosity is 32%, and filtering accuracy is notable
Lifted.When indoor air purification is used for, filter efficiency more than 90%, using the filtering accuracy after June still 85% with
On, and zinc-SiC particulate composite coating (3) does not have any obscission.
By above-mentioned filtering material cutting, be folded into the filter element of plate, cylinder type or other shapes, can with but not only
It is limited to using following two modes.A kind of is that the filtering material of two different pore sizes is made into double-filtration element, average pore size
Larger first order filtering material is first contacted with thing to be filtered, retains larger particulate matter, and then less particulate matter is by the
Cascade filtration material is retained.Another is by the porous material base material superposition rolling of two kinds of different pore sizes, then again using upper
Method attachment hot-spraying coating is stated, filter element is then made, the larger side of average pore size first contacts with thing to be filtered, retains
Firmly larger particulate matter, then less particulate matter retained by opposite side.
Claims (6)
1. filtering material, including porous material base material (1), it is characterised in that：In the pore surface (2) of porous material base material (1)
Electroplated coating (3) is attached with, the electroplated coating includes alloy or metal simple-substance；
The metal simple-substance is zinc, nickel, tungsten, magnesium, titanium, palladium, cadmium, gold, silver, stannum, copper or aluminum；The alloy is kirsite, aluminum conjunction
Gold, nickel alloy, tungsten alloy, silver alloy or magnesium alloy；
The porous material base material (1) by solid solution alloy, the metal simple-substance of face-centred cubic structure or body-centered cubic structure gold
The metal polyporous material of phase is constituted based on category simple substance；Or the porous material base material (1) is foam metal.
2. filtering material as claimed in claim 1, it is characterised in that：Solid particle (4) is distributed with the electroplated coating.
3. filtering material as claimed in claim 2, it is characterised in that：The solid particle is SiC and/or MoS2。
4. filtering material as claimed in claim 1, it is characterised in that：The foam metal is nickel foam, foam nickel alloy, bubble
Any one in foam copper, foam copper alloy, foamed aluminium, foam aluminium alloy.
5. filtering material as claimed in claim 4, it is characterised in that：The average pore size of the foam metal is 0.01-
0.5mm, porosity is 60-95%.
6. filtering material as claimed in claim 1, it is characterised in that：The average pore size of the porous material base material (1) is 5-
100 μm, porosity is 25-70%.
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