CN107163806A - It is a kind of for nano-structured coating of air purifier and preparation method thereof - Google Patents
It is a kind of for nano-structured coating of air purifier and preparation method thereof Download PDFInfo
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- CN107163806A CN107163806A CN201710215583.3A CN201710215583A CN107163806A CN 107163806 A CN107163806 A CN 107163806A CN 201710215583 A CN201710215583 A CN 201710215583A CN 107163806 A CN107163806 A CN 107163806A
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- 239000002103 nanocoating Substances 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 238000000576 coating method Methods 0.000 claims abstract description 125
- 239000011248 coating agent Substances 0.000 claims abstract description 118
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 87
- 239000011159 matrix material Substances 0.000 claims abstract description 32
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 26
- 230000007704 transition Effects 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 15
- 239000010410 layer Substances 0.000 claims abstract description 14
- 239000013078 crystal Substances 0.000 claims abstract description 12
- 239000011247 coating layer Substances 0.000 claims abstract description 3
- 238000005507 spraying Methods 0.000 claims description 33
- 239000011344 liquid material Substances 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 24
- 239000007921 spray Substances 0.000 claims description 24
- 238000010285 flame spraying Methods 0.000 claims description 19
- 239000007789 gas Substances 0.000 claims description 19
- 239000000843 powder Substances 0.000 claims description 19
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 12
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 12
- 239000000567 combustion gas Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- 239000004814 polyurethane Substances 0.000 claims description 8
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 7
- 239000011230 binding agent Substances 0.000 claims description 7
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims description 7
- 238000000889 atomisation Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 6
- 238000007751 thermal spraying Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000010891 electric arc Methods 0.000 claims description 4
- 238000007750 plasma spraying Methods 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000011858 nanopowder Substances 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 239000011368 organic material Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 239000002694 phosphate binding agent Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 238000007146 photocatalysis Methods 0.000 description 19
- 230000001699 photocatalysis Effects 0.000 description 18
- 239000012071 phase Substances 0.000 description 16
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 12
- 229960000907 methylthioninium chloride Drugs 0.000 description 12
- 238000013019 agitation Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 8
- 238000002156 mixing Methods 0.000 description 6
- 238000011056 performance test Methods 0.000 description 5
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- 230000008569 process Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 229910052593 corundum Inorganic materials 0.000 description 4
- 239000010431 corundum Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007788 roughening Methods 0.000 description 4
- 238000005488 sandblasting Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000013034 coating degradation Methods 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- -1 Superoxide anion free radical Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000000445 field-emission scanning electron microscopy Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/063—Titanium; Oxides or hydroxides thereof
-
- B01J35/39—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/08—Flame spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
-
- 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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- 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
- C09D139/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Coating compositions based on derivatives of such polymers
- C09D139/04—Homopolymers or copolymers of monomers containing heterocyclic rings having nitrogen as ring member
- C09D139/06—Homopolymers or copolymers of N-vinyl-pyrrolidones
-
- 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
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1606—Antifouling paints; Underwater paints characterised by the anti-fouling agent
- C09D5/1612—Non-macromolecular compounds
- C09D5/1618—Non-macromolecular compounds inorganic
-
- 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
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2451/00—Type of carrier, type of coating (Multilayers)
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2601/00—Inorganic fillers
- B05D2601/20—Inorganic fillers used for non-pigmentation effect
- B05D2601/24—Titanium dioxide, e.g. rutile
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention discloses a kind of nano-structured coating for air purifier, described coating layer thickness is about 10 50 μm, TiO in described coating2It is 70 90 for the mass ratio of mixed crystal type, mainly Anatase and Rutile Type, and anatase and rutile:10 30, there is layer of metal coating between described nano-structured coating and matrix as transition zone, transition region thickness is 100 300 μm.Also disclose a kind of preparation method of the nano-structured coating for air purifier.
Description
Technical field
Applied the present invention relates to the field of Environment Protection such as air purifier, more particularly to a kind of nanostructured for air purifier
Layer and preparation method thereof.
Background technology
In the case where advocating environment-friendly, low-carbon economy, the overall situation of energy-saving and emission-reduction now, environmental protection industry is that China gives special assistance to
One of direction, applied to air cleaner processing（In typical such as air-conditioning system air cleaner processing, incineration treatment of garbage chimney
Wall etc.）Photocatalysis coating technology be research and development important directions.The TiO of nanostructured2With larger specific surface area and quantum
The features such as dimensional effect, its photocatalysis performance is better than micron-sized TiO2.Utilize TiO2Coating produces hydroxyl under ultraviolet light
Free radical（•OH）And Superoxide anion free radical（•O2 -）, so that the effectively pollutant in degraded air and killing bacterium, with pole
Big practical value.
TiO2The traditional preparation methods of coating mainly have sol-gel process, physical vaporous deposition, chemical vapor deposition
Method, electrochemical method etc., either deposition is relatively low or technology is more complicated, to raw material and equipment requirement for traditional preparation method
It is higher, costly, so wanting to realize TiO2The large-scale application of coating, which is needed badly, develops new coating production.Thermal jet
Painting is that a kind of high efficiency, low cost prepare the effective ways of Large area coatings, however, traditional heat spraying method must use it is micro-
Nanoscale powder, and because powder particle experience high temperature action causes TiO in thermal spray process2Crystal formation irreversibly by rutile titania
Ore deposit changes to Rutile Type, therefore, and traditional heat spraying method is difficult to obtain high-specific surface area and the coating of high anatase content,
TiO2The performance of coating photo-catalysis function is extremely limited.
Liquid-phase thermal spray is to carry out thermal spraying prepares coating using the presoma or suspension of prepares coating as spraying raw material
Technology, the method for this Direct precipitation coating prepares powder and coating is prepared and united two into one, and enormously simplify technique
Step, and because substantial amounts of heat is taken away in the evaporation and volatilization of liquid in spraying process, the temperature of spraying particle experience is relatively low, liquid
Phase heat spraying method has the advantages that reduction raw particles particle growth and crystal transfer.From it has been reported that using liquid-phase thermal spray
Method successfully prepares nano-TiO2Coating, but from the point of view of the result of report, the adhesive force of obtained coating still needs to further carry
It is high.In addition, P25 mixed crystal type nanometers TiO2Powder increases TiO due to two kinds of mixing up of structure2Intracell defect concentration, is increased
The concentration of carrier, makes electronics, number of cavities increase, makes it have stronger capture in TiO2The solution components on surface（Water, oxygen
Gas, organic matter）Ability.Therefore, prepared with liquid-phase thermal spray technology strong and good with high efficiency photocatalysis, high combination
Air purification nano-TiO2Coating, solves the key technology that the industrialization under atmospheric environment prepares nano structure membrane
Bottleneck, will bring great social and economic benefit.
The content of the invention
It is an object of the invention to applied for the not enough of above-mentioned technology there is provided a kind of nanostructured for air purifier
Layer and preparation method thereof, the coating has production and processing technology simple, cheap, and production process does not have waste gas, given up completely
The emission problem of water, waste residue etc. " three industrial wastes ", is a kind of real green, environmental protection, the photocatalytic self-cleaning coating of health.
The present invention realize technical scheme that above-mentioned technical purpose used for：A kind of nanostructured for air purifier
Coating, it is characterized in that：Described coating layer thickness is about 10-50 μm, TiO in described coating2For mixed crystal type, mainly anatase
Phase and Rutile Type, and the mass ratio of anatase and rutile is 70-90:10-30, described nano-structured coating and matrix it
Between have layer of metal coating as transition zone, transition region thickness is 100-300 μm.
Described coating material is metal material or ceramic material or organic material or composite.
Preparation method for the nano-structured coating of air purifier comprises the following steps：
Step 1, preparation mixed crystal type nanometer TiO2Spray liquid material：By the TiO that particle mean size is 20nm2Nanometer powder and deionized water
Mixed with absolute ethyl alcohol, and add binding agent and stirred, become finely dispersed suspension liquid material, TiO2Nano powder
Last crystal formation is Anatase and Rutile Type, and the mass ratio of anatase and rutile is 70-90:10-30；
Step 2, by matrix cleaned and surface coarsening handle；
Step 3, on the matrix that step 2 has been handled using heat spraying method prepare layer of metal coating as transition zone；
Step 4, metal transition layer surface carry out thermal spraying prepare nano-structured coating：Used in the transition layer surface of metal
Heat spraying method, by combustion gas of acetylene, oxygen be combustion-supporting gas, the spraying liquid material prepared in step 1 is atomized with compressed air
Afterwards, flame root, and the conveying direction and thermal spraying flame of the spraying liquid material of the atomization are transported to using feeding style outside rifle
Axial direction prepares the TiO that thickness is 10-50 μm in 30-90 ° of angle in metal transfer layer surface2Coating.
In described step 1, the volume ratio of deionized water and absolute ethyl alcohol is 1-5:1.
In described step 1, TiO2Mass percent of the powder in liquid material is 2-5wt%, matter of the binding agent in liquid material
Amount percentage is 0.3-1.5wt%.
In described step 1, used binding agent is aqueous polyurethane PU, polyvinylpyrrolidone PVP and phosphate
The mixture of any one or any two kinds in serial binding agent.
It is Al or Zn or Ti or Ni or Fe or Co metals or its conjunction as the metal coating of transition zone in described step 3
Gold, the heat spraying method used is electric arc spraying or flame-spraying or plasma spraying or laser spraying.
In described step 4, from flame spraying method, the scope of its spray parameters is：Combustion-supporting gas, combustion gas and auxiliary gas
Pressure be respectively 0.4-0.8Mpa, 0.1-0.3Mpa and 0.3-0.6Mpa, flow is respectively 2.0-3.5 Nm3/h、1.0-2.0
Nm3/ h and 2.0-3.5 Nm3/ h, the flow of spraying liquid material is 1.5-4.5Nm3/ h, spray distance is 150-350mm.
In order to characterize the performance of the nano-structured coating for air purifier of the invention, Flied emission scanning electron is utilized
Microscope（FESEM）Microscopic appearance sign is carried out to the coating sample prepared, the automatic scratching instrument of coating adhesion, table is utilized
The adhesive force between the coating and substrate is levied, detects that the concentration of the methylene blue solution of coating degradation characterizes the coating using ELIASA
Photocatalysis performance, the following is specific method for testing performance.
（1）Coating substance is mutually detected：The sample of preparation is dried into 3h for 80 ° in air dry oven, examined using X-ray diffractometer
Survey its thing phase.
（2）Coating microscopic appearance is observed：The sample of preparation is dried into 2h for 80 ° in air dry oven, seen to improve Electronic Speculum
Effect is examined, sample surfaces are sprayed with Au to strengthen its electric conductivity, its surface microscopic shape is observed using field emission scanning electron microscope
Looks.
（3）Coating photocatalysis performance method of testing：Compound concentration is 5ppm methylene blue solution, takes 30ml to be put in diameter
For in 9cm culture dishes.By the TiO that size is 4 × 2.5cm2Coating is positioned in culture dish and magnetic agitation, and mixing speed is
80r/min.Continue 1 hour under dark condition（Coating is set fully to be contacted with methylene blue solution）It is ultraviolet that uviol lamp progress is opened afterwards
Illumination, uviol lamp power is 15W, and wavelength is 365nm, and the distance of sample and ultraviolet lamp tube is 15cm.Uviol lamp open after the
Take methylene blue solution 200 when 0h, 0.5h, 1.5h, 2.5h, 3.5h, 4.5h and 5.5hmin from culture dish with liquid-transfering gun respectively
μ l, are placed in 96 orifice plates and carry out absorbance test and record test result.Calculate molten according to the absorbance at wavelength 664nm
The concentration of liquid Methylene Blue.Every group of sample at least carries out 3 experiments to reduce error.
In summary, provided by the present invention for the TiO of air purifier2Coating shows porous nanostructured, powder
Obvious transformation does not occur for last crystal formation, with good photocatalysis performance, is expected to produce great economic results in society.With at present often
TiO2Coating and preparation method thereof is compared, and is had the following advantages that：
（1）By nano-TiO2Liquid material is sent directly into thermal spraying flame, overcomes the shortcoming that nano-powder is difficult direct spraying, reduces
Mist projection granulating process, the coating of preparation remains to keep the crystal structure and nano-scale of starting powder, is well combined with matrix,
And coating has larger specific surface area, beneficial to performance TiO2Photocatalytic self-cleaning performance advantage.
（2）The TiO prepared using flame spraying method2Coating, equipment and technique are simple, easily-controllable, and coating deposition efficiency is high,
Low production cost, can be achieved large area and prepares, be easy to industrialization to mass produce.
Brief description of the drawings
Fig. 1 is preparation method schematic diagram of the present invention for the nano-structured coating of air purifier；
Fig. 2 is the XRD spectrum of the obtained nano-structured coating for air purifier in the embodiment of the present invention 1；
Fig. 3 is the cross-section morphology figure of the obtained nano-structured coating for air purifier in the embodiment of the present invention 1；
Fig. 4 is the situation of the obtained nano-structured coating degradation of methylene blue for air purifier in the embodiment of the present invention 1.
Embodiment
Embodiment is described in further detail to the present invention below in conjunction with the accompanying drawings, it should be pointed out that as described below to implement
Example is intended to be easy to the understanding of the present invention, and does not play any restriction effect to it.
Reference in Fig. 1 is：1 liquid material charging aperture, 2 auxiliary gas, 3 combustion-supporting gas, 4 combustion gas, 5 flame flame streams.
Embodiment 1：
In the present embodiment, matrix material is thickness about 2mm 316L stainless steel substrates, TiO2The thickness of coating is 40 μm, the coating
Middle TiO2Crystalline phase composition be Anatase and Rutile Type, according to mass fraction meter, Detitanium-ore-type accounts for 80%, and coating surface is
Porous nanometer structure, using aluminized coating as transition zone between matrix and nano-structured coating, its thickness is 250 μm.The coating
Specific preparation method it is as follows：
1st, by deionized water and absolute ethyl alcohol by volume 4:1 mixing wiring solution-forming, by the TiO that commercially available particle mean size is 20nm2
Nanometer powder is added with 3wt% ratio and is made into the above-mentioned solution prepared, and magnetic agitation is well mixed, and aqueous polyurethane is molten
Liquid（PU）And polyvinylpyrrolidone（PVP）Added respectively in 0.7wt% and 0.13wt% ratio in the above-mentioned mixed liquor prepared,
Magnetic agitation is well mixed；
2nd, matrix is cleaned, carries out surface sand-blasting roughening treatment using 60 mesh corundum sands, its roughness is reached spraying
It is required that, improve the coating of spraying and the bond strength of matrix；
3rd, the Al coatings that thickness is about 250 μm are prepared in matrix surface using arc spray process, controls the System for Electric Arc Spraying Current to be
200A, voltage is 30V, and compressed air pressure is 0.6MPa, and spray distance is 200mm.
4th, liquid material to be sprayed is sprayed to by above-mentioned Al coating surfaces using flame spraying method, obtains about 40 μm of thickness
TiO2Nano-structured coating.The spray parameters for controlling flame spraying gun are：Combustion-supporting gas O2, combustion gas be that acetylene, auxiliary gas are that compression is empty
The pressure of gas is respectively 0.5Mpa, 0.1Mpa, 0.3Mpa, and flow is respectively 3.0 Nm3/h、1.5 Nm3/h、2.0 Nm3/ h, liquid material
Atomization compressed air pressure is 0.4MPa, and flow is 3Nm3/ h, spray distance is 150mm.
Following performance test is carried out to the above-mentioned nano-structured coating for air purifier prepared：
（1）Coating substance phase：Utilize X-ray diffractometer（XRD）Coating phase structure is detected, Fig. 2 is obtained coating in the present embodiment
XRD spectrum, as seen from the figure, be mainly Anatase and Rutile Type in coating, and the weight ratio of anatase and rutile is big
About 80/20, it is consistent with Anatase in starting powder and Rutile Type, illustrate to obtain surely using liquid material flame spraying process
Fixed TiO2Coating.
（2）Coating microscopic appearance is observed：Its microscopic appearance is observed using field emission scanning electron microscope, Fig. 3 is this reality
The section SEM photograph that coating is made in example is applied, coating is mainly nanostructured as seen from the figure.
（3）Coating photocatalysis performance：The methylene blue solution of coating photocatalytic degradation is detected using ELIASA, Fig. 4 is this
The curve that coating degradation methylene blue solution different time node is done, as seen from the figure, coating photocatalytic are made in embodiment
Can be good.
Embodiment 2：
In the present embodiment, matrix material is thickness about 2mm 316L stainless steel substrates, the TiO of the matrix surface2The thickness of coating is
50 μm, TiO in the coating2Crystalline phase composition be Anatase and Rutile Type, according to mass fraction meter, Detitanium-ore-type accounts for 80%,
Coating surface is porous nanometer structure, using aluminized coating as transition zone between matrix and nano-structured coating, and its thickness is 250
μm.The specific preparation method of the coating is as follows：
1st, by deionized water and absolute ethyl alcohol by volume 1:1 mixing wiring solution-forming, by the TiO that commercially available particle mean size is 20nm2
Nanometer powder is added with 5wt% ratio and is made into the above-mentioned solution prepared, and magnetic agitation is well mixed, and aqueous polyurethane is molten
Liquid（PU）And polyvinylpyrrolidone（PVP）Added respectively in 0.6wt% and 0.2wt% ratio in the above-mentioned mixed liquor prepared,
Magnetic agitation is well mixed；
2nd, matrix is cleaned, carries out surface sand-blasting roughening treatment using 60 mesh corundum sands, its roughness is reached spraying
It is required that, improve the coating of spraying and the bond strength of matrix；
3rd, the Al coatings that thickness is about 250 μm are prepared in matrix surface using flame spraying method, controls the spray of flame spraying gun
Applying parameter is：Combustion-supporting gas O2, combustion gas be acetylene, auxiliary gas be compressed air pressure be respectively 0.5Mpa, 0.1Mpa,
0.3Mpa, flow is respectively 4.5 Nm3/h、2.5 Nm3/h、4.5 Nm3/ h, spray distance is 100mm.
4th, liquid material to be sprayed is sprayed to by above-mentioned Al coating surfaces using flame spraying method, obtains about 50 μm of thickness
TiO2Photocatalysis coating.The spray parameters for controlling flame spraying gun are：Combustion-supporting gas O2, combustion gas be acetylene, auxiliary gas be compressed air
Pressure be respectively 0.5Mpa, 0.1Mpa, 0.3Mpa, flow is respectively 4.5 Nm3/h、2.5 Nm3/h、4.5 Nm3/ h, liquid material
Atomization compressed air pressure is 0.4MPa, and flow is 3Nm3/ h, spray distance is 120mm.
Following performance test is carried out to the above-mentioned nano-structured coating for air purifier prepared：
（1）Coating substance phase：Utilize X-ray diffractometer（XRD）Detect coating phase structure, it was demonstrated that be mainly Anatase in coating
And Rutile Type, and the weight ratio of anatase and rutile is about Anatase and Rutile Type in 80/20, with starting powder
Unanimously, illustrate that stable TiO can be obtained using liquid material flame spraying process2Coating.
（2）Coating microscopic appearance is observed：Its surface microscopic topographic is observed using field emission scanning electron microscope, it is seen that this
The surface that coating is made in embodiment is porous nanometer structure, is conducive to the performance of photocatalysis performance.
（3）Coating photocatalysis performance：The methylene blue solution of coating photocatalytic degradation is detected using ELIASA, coating light is urged
Change functional.
Embodiment 3：
In the present embodiment, matrix material is thickness about 2mm 316L stainless steel substrates, the TiO of the matrix surface2The thickness of coating is
20 μm, TiO in the coating2Crystalline phase composition be Anatase and Rutile Type, according to mass fraction meter, Detitanium-ore-type accounts for 80%,
Coating surface is porous nanometer structure, using Zn coatings as transition zone between matrix and nano-structured coating, and its thickness is 150
μm.The specific preparation method of the coating is as follows：
1st, by deionized water and absolute ethyl alcohol by volume 1:1 mixing wiring solution-forming, by the TiO that commercially available particle mean size is 20nm2
Nanometer powder is added with 5wt% ratio and is made into the above-mentioned solution prepared, and magnetic agitation is well mixed, and series of phosphate is glued
Tie agent and polyvinylpyrrolidone（PVP）Added respectively in 0.4wt% and 1.2wt% ratio in the above-mentioned mixed liquor prepared, magnetic
Power is uniformly mixed；
2nd, matrix is cleaned, carries out surface sand-blasting roughening treatment using 60 mesh corundum sands, its roughness is reached spraying
It is required that, improve the coating of spraying and the bond strength of matrix；
3rd, the Zn coatings that thickness is about 150 μm are prepared in matrix surface using arc spray process, controls the System for Electric Arc Spraying Current to be
200A, voltage is 25V, and compressed air pressure is 0.6MPa, and spray distance is 200mm.
4th, liquid material to be sprayed is sprayed to by above-mentioned Zn coating surfaces using flame spraying method, obtains about 20 μm of thickness
TiO2Photocatalysis coating.The spray parameters for controlling flame spraying gun are：Combustion-supporting gas O2, combustion gas be acetylene, auxiliary gas be compressed air
Pressure be respectively 0.7Mpa, 0.1Mpa, 0.3Mpa, flow is respectively 5.5 Nm3/h、3.5 Nm3/h、5.0 Nm3/ h, liquid material
Atomization compressed air pressure is 0.6MPa, and flow is 3Nm3/ h, spray distance is 180mm.
Following performance test is carried out to the above-mentioned nano-structured coating for air purifier prepared：
（1）Coating substance phase：Utilize X-ray diffractometer（XRD）Detect coating phase structure, it was demonstrated that be mainly Anatase in coating
And Rutile Type, and the weight ratio of anatase and rutile is about Anatase and Rutile Type in 80/20, with starting powder
Unanimously, illustrate that stable TiO can be obtained using liquid material flame spraying process2Coating.
（2）Coating microscopic appearance is observed：Its surface microscopic topographic is observed using field emission scanning electron microscope, it was demonstrated that this
The surface that coating is made in embodiment is porous nanometer structure, is conducive to the performance of photocatalysis performance.
（3）Coating photocatalysis performance：The methylene blue solution of coating photocatalytic degradation is detected using ELIASA, coating light is urged
Change functional.
Embodiment 4：
In the present embodiment, matrix material is thickness about 2mm aluminum alloy sheet, the TiO of the matrix surface2The thickness of coating is 30 μ
TiO in m, the coating2Crystalline phase composition be Anatase and Rutile Type, according to mass fraction meter, Detitanium-ore-type accounts for 80%, painting
Layer surface is porous nanometer structure, using Ni coatings as transition zone between matrix and nano-structured coating, and its thickness is 100 μ
m.The specific preparation method of the coating is as follows：
1st, by deionized water and absolute ethyl alcohol by volume 3:1 mixing wiring solution-forming, by the TiO that commercially available particle mean size is 20nm2
Nanometer powder is added with 3.3wt% ratio and is made into the above-mentioned solution prepared, and magnetic agitation is well mixed, by series of phosphate
Binding agent and polyvinylpyrrolidone（PVP）Added respectively in 0.12wt% and 0.8wt% ratio in the above-mentioned mixed liquor prepared,
Magnetic agitation is well mixed；
2nd, matrix is cleaned, carries out surface sand-blasting roughening treatment using 60 mesh corundum sands, its roughness is reached spraying
It is required that, improve the coating of spraying and the bond strength of matrix；
3rd, the Ni coatings that thickness is about 100 μm, control plasma spraying electricity are prepared in matrix surface using plasma spraying method
Flow for 500A, voltage is 60V, and powder feeding rate is 40g/min, and spray distance is 100mm.
4th, liquid material to be sprayed is sprayed to by above-mentioned Ni coating surfaces using flame spraying method, obtains about 30 μm of thickness
TiO2Photocatalysis coating.The spray parameters for controlling flame spraying gun are：Combustion-supporting gas O2, combustion gas be acetylene, auxiliary gas be compressed air
Pressure be respectively 0.6MPa, 0.1Mpa, 0.6Mpa, flow is respectively 5 Nm3/h、2 Nm3/h、5.0 Nm3/ h, liquid material atomization
Compressed air pressure is 0.6MPa, and flow is 4Nm3/ h, it is 160mm to apply distance.
Following performance test is carried out to the above-mentioned nano-structured coating for air purifier prepared：
（1）Coating substance phase：Utilize X-ray diffractometer（XRD）Detect coating phase structure, it was demonstrated that be mainly Anatase in coating
And Rutile Type, and the weight ratio of anatase and rutile is about Anatase and Rutile Type in 80/20, with starting powder
Unanimously, illustrate that stable TiO can be obtained using liquid material flame spraying process2Coating.
（2）Coating microscopic appearance is observed：Its surface microscopic topographic is observed using field emission scanning electron microscope, it was demonstrated that this
The surface that coating is made in embodiment is porous nanometer structure, is conducive to the performance of photocatalysis performance.
（3）Coating photocatalysis performance：The methylene blue solution of coating photocatalytic degradation is detected using ELIASA, coating light is urged
Change functional.
Embodiment 5：
The present embodiment is substantially the same manner as Example 4, except that matrix material is thickness about 20mm ceramics in the present embodiment
Piece, other experiment conditions are identical.
Following performance test is carried out to the above-mentioned nano-structured coating for air purifier prepared：
（1）Utilize X-ray diffractometer（XRD）Detect coating phase structure, it was demonstrated that be mainly Anatase and rutile in coating
Phase, and the weight ratio of anatase and rutile is about 80/20.
（2）Its surface microscopic topographic is observed using field emission scanning electron microscope, it was demonstrated that coating is made in the present embodiment
Surface be porous nanometer structure, be conducive to the performance of photocatalysis performance.
（3）Coating photocatalysis performance：The methylene blue solution of coating photocatalytic degradation is detected using ELIASA, coating light is urged
Change functional.
Technical scheme and beneficial effect are described in detail embodiment described above, it should be understood that
The specific embodiment of the present invention is the foregoing is only, is not intended to limit the invention, it is all to be done in the spirit of the present invention
Any modification and improvement etc., should be included in the scope of the protection.
Claims (8)
1. a kind of nano-structured coating for air purifier, it is characterized in that：Described coating layer thickness is about 10-50 μm, institute
TiO in the coating stated2It is 70- for the mass ratio of mixed crystal type, mainly Anatase and Rutile Type, and anatase and rutile
90:10-30, has layer of metal coating as transition zone, transition region thickness is between described nano-structured coating and matrix
100-300μm。
2. the nano-structured coating according to claim 1 for air purifier, it is characterized in that：Described coating material
It is metal material or ceramic material or organic material or composite.
3. the preparation method of the nano-structured coating according to claim 1 for air purifier, it is characterized in that：Including
Following steps：
Step 1, preparation mixed crystal type nanometer TiO2Spray liquid material：By the TiO that particle mean size is 20nm2Nanometer powder and deionized water
Mixed with absolute ethyl alcohol, and add binding agent and stirred, become finely dispersed suspension liquid material, TiO2Nano powder
Last crystal formation is Anatase and Rutile Type, and the mass ratio of anatase and rutile is 70-90:10-30；
Step 2, by matrix cleaned and surface coarsening handle；
Step 3, on the matrix that step 2 has been handled using heat spraying method prepare layer of metal coating as transition zone；
Step 4, metal transition layer surface carry out thermal spraying prepare nano-structured coating：Used in the transition layer surface of metal
Heat spraying method, by combustion gas of acetylene, oxygen be combustion-supporting gas, the spraying liquid material prepared in step 1 is atomized with compressed air
Afterwards, flame root, and the conveying direction and thermal spraying flame of the spraying liquid material of the atomization are transported to using feeding style outside rifle
Axial direction prepares the TiO that thickness is 10-50 μm in 30-90 ° of angle in metal transfer layer surface2Coating.
4. the preparation method of the nano-structured coating according to claim 3 for air purifier, it is characterized in that：It is described
Step 1 in, the volume ratio of deionized water and absolute ethyl alcohol is 1-5:1.
5. the preparation method of the nano-structured coating according to claim 3 for air purifier, it is characterized in that：It is described
Step 1 in, TiO2Mass percent of the powder in liquid material is 2-5wt%, and mass percent of the binding agent in liquid material is
0.3-1.5wt%。
6. the preparation method of the nano-structured coating according to claim 3 for air purifier, it is characterized in that：It is described
Step 1 in, used binding agent be aqueous polyurethane PU, polyvinylpyrrolidone PVP and series of phosphate binding agent in
Any one or any two kinds mixture.
7. the preparation method of the nano-structured coating according to claim 3 for air purifier, it is characterized in that：It is described
Step 3 in, be Al or Zn or Ti or Ni or Fe or Co metals or its alloy, the heat used as the metal coating of transition zone
Spraying method is electric arc spraying or flame-spraying or plasma spraying or laser spraying.
8. the preparation method of the nano-structured coating according to claim 3 for air purifier, it is characterized in that：It is described
Step 4 in, from flame spraying method, the scope of its spray parameters is：Combustion-supporting gas, combustion gas and aid in gas pressure be respectively
0.4-0.8Mpa, 0.1-0.3Mpa and 0.3-0.6Mpa, flow are respectively 2.0-3.5 Nm3/h、1.0-2.0 Nm3/ h and 2.0-
3.5 Nm3/ h, the flow of spraying liquid material is 1.5-4.5Nm3/ h, spray distance is 150-350mm.
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| CN110560023A (en) * | 2019-08-07 | 2019-12-13 | 广东省新材料研究所 | Nano titanium dioxide photocatalytic coating and preparation method thereof |
| CN111628120A (en) * | 2020-06-18 | 2020-09-04 | 苏州凌威新能源科技有限公司 | Lithium battery packaging film and preparation method thereof |
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| CN103937320A (en) * | 2014-05-04 | 2014-07-23 | 郴州市泰益表面涂层技术有限公司 | Nanometer TiO2 photocatalysis self-cleaning coating suitable for background colors of building walls and preparation method thereof |
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