CN110396348A - A kind of road coating and preparation method purifying vehicle exhaust - Google Patents
A kind of road coating and preparation method purifying vehicle exhaust Download PDFInfo
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- CN110396348A CN110396348A CN201910628315.3A CN201910628315A CN110396348A CN 110396348 A CN110396348 A CN 110396348A CN 201910628315 A CN201910628315 A CN 201910628315A CN 110396348 A CN110396348 A CN 110396348A
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- 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
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
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- 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
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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
- B23K2103/54—Glass
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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
- 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
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
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- C08K2003/265—Calcium, strontium or barium carbonate
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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
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The present invention relates to purifying vehicle exhaust fields, disclose a kind of road coating and preparation method for purifying vehicle exhaust.Including following preparation process: (1) being uniformly mixed nano-titanium dioxide with diatomite powder；(2) laser welding is carried out to mixed-powder using laser scanner technique, obtains diatomite weld load nano-titanium dioxide；(3) water, wollastonite in powder, lime stone, methylcellulose, aqueous epoxy resins glue, bentonite, dispersing agent, defoaming agent, diatomite weld load nano-titanium dioxide are uniformly mixed to get the road coating of purification vehicle exhaust.The present invention makes tripolite loading nano titanium dioxide by way of glass powder auxiliary and laser welding, technique green non-pollution, high production efficiency, it loads stronger, it is not easily to fall off, further in road paint obtained adsorption capacity is strong, tail gas can be largely adsorbed on to the surface of catalyst granules, the degradation efficiency to tail gas is improved, the practical application in industry of photocatalysis technology has been widened.
Description
Technical field
The present invention relates to purifying vehicle exhaust field, a kind of road coating for purifying vehicle exhaust and preparation side are disclosed
Method.
Background technique
With the fast high speed development of China's economy, our people's living standard is continuously improved, and the car ownership in China is fast
Speed increases, and social automobile now has become the indispensable vehicles, but while the increase of automobile quantity, vehicle exhaust row
It is also increasingly severe to put pollution on the environment.The main component of vehicle exhaust has CO, NOx、SO2Deng serious harm people
Health and environmental quality.According to statistics, the CO in Chinese big city 60%, 50% NOx, 30% hydrocarbon be by vapour
Caused by vehicle emission.2 kinds of forms are controlled outside interior control organic to the main control means of automobile exhaust pollution at present and machine,
Wherein external purification mainly reduces CO, NO in the method for photocatalytic degradationxContent.
Nano-photocatalyst material is with its good photocatalytic activity, chemical stability and recyclable property, by conduct
Purify the new material of air.It is at present generally to be applied to catalysis material titanium dioxide to coat or mix two kinds of addition manners
In asphalt pavement material, the environment protection asphalt pavement for the vehicle exhaust that can degrade is formed.
It is existing at present as described above to be reduced to nitrogen oxides, carbon monoxide, ammonia etc. by using exhaust gas purifying catalyst
Nitrogen (N2) and water (H2O method).But since automobile emission speed is fast, motor exhaust is in internal combustion engine or exhaust pipe
The time of circulation is too short；And catalyst is often difficult to play effect within the so short time, so that the murder by poisoning in tail gas
Gas is not just excluded in air by preset chemical reaction, or purification is not thorough enough, still causes tail gas pollution.
Light-catalyzed reaction, which belongs to surface reaction, need to be adsorbed on first tail gas in the table of catalyst granules to vehicle exhaust is catalytically decomposed
Face, these disadvantages seriously constrain the practical application in industry of photocatalysis technology.Therefore, research can effectively purify vehicle exhaust
Catalysis material becomes hot subject.
It is compound that Chinese invention patent application number 201110414880.3 discloses a kind of tripolite loading nano titanium dioxide
The preparation method of powder body material, method are that zinc nitrate is added water and stirred to dissolution, and it is that 0.3 ~ 0.7mol/L zinc nitrate is molten that concentration, which is made,
Diatomite is added in liquid, and the mass fraction of diatomite is 5 ~ 20%, and it is molten to be then slowly added into the ammonium hydroxide that concentration is 0.2 ~ 0.5mol/L
Liquid is reacted, and is finally filtered, washed reactant, drying and calcination, drying temperature be 80 ~ 120 DEG C, calcination temperature be 350 ~
700 DEG C, soaking time is 1 ~ 4h to get tripolite loading nano titanium dioxide composite powder material.
Chinese invention patent application number 201710645928.9 discloses a kind of group of adsorption cleaning motor vehicle exhaust emission object
Coating is closed, nano-titanium dioxide generates catalytic action under ultraviolet radiation, purifies air, sterilization antivirus, and nanometer titanium dioxide
Carbon monoxide, hydrocarbon, oxynitrides in titanium and vehicle exhaust and oxygen sulfur compound reaction generate carbon dioxide and
Water discharges the anion beneficial to human body using nanometer anion powder, is inhaled using the high-efficiency cold catalyst material powder of colorless and odorless
Solid suspended particle in attached vehicle exhaust, and the pernicious gases such as formaldehyde, benzene, toluene, TVOC are dispelled, generate water and titanium dioxide
Carbon increases spreading property using propylene glycol methyl ether acetate, improves the adhesive force of coating, and quickening film is dry and hard, and it is tough to increase film
Property.
According to above-mentioned, in the photocatalyst material of purifying vehicle exhaust in existing scheme, by photocatalyst in
Method on the carrier of high-specific surface area to promote catalytic effect, there are processes to pollute feelings larger, that load effect is poor
Condition.
Summary of the invention
Catalyst, is usually carried on by the wider technology using exhaust gas purifying catalyst processing vehicle exhaust of application at present
Method on the carrier of high-specific surface area to promote catalytic effect, exist pollution it is larger, photocatalyst effect is undesirable
Problem, the invention proposes a kind of road coating and preparation method for purifying vehicle exhaust, can effectively solve above-mentioned technology and ask
Topic.
To solve the above problems, the invention adopts the following technical scheme:
A kind of preparation method for the road coating purifying vehicle exhaust, the detailed process of preparation are as follows:
(1) titanium dioxide of 200 ~ 500nm, Nano glass powder are added into diatomite powder, are uniformly mixed, obtain mixed powder
End；
(2) in the presence of protective gas, Laser Welding is carried out to the mixed-powder that step (1) obtains using laser scanner technique
It connects, interconnects micro- molten formed with nano-titanium dioxide surface of glass powder, and be firmly combined with diatomite support, obtain diatomite weldering
Connect load nano-titanium dioxide；
(3) first by water, wollastonite in powder, lime stone, methylcellulose, aqueous epoxy resins glue, bentonite, dispersing agent, defoaming agent
It is uniformly mixed, the diatomite weld load nano-titanium dioxide that step (2) obtain is added, then with the revolving speed of 600 ~ 800r/min
40 ~ 60min is stirred, so that each raw material is uniformly mixed to get the road coating of purification vehicle exhaust.
Titanium dioxide is a kind of common catalysis material, and nano-titanium dioxide is as a kind of oxide haveing excellent performance
Semiconductor material, particle size is small, large specific surface area, has good skin effect, bulk effect and quantum size effect, In
Applications well prospect is used in light catalytic purifying vehicle exhaust.In addition, since light-catalyzed reaction belongs to surface reaction, to catalysis point
Vehicle exhaust is solved, tail gas need to be adsorbed on first to the surface of catalyst granules, therefore, by photocatalyst in high-specific surface area
Carrier on can effectively promote catalytic effect, can also improve the dispersibility of photochemical catalyst.Inorganic natural minerals are commonly used at present to make
For carrier of photocatalyst, wherein diatomite has the characteristics that light, porous, relative density is small, and diatomite is with unique
Microcellular structure, large specific surface area, heap density is small, and pore volume is big, and surface is covered by a large amount of silicone hydroxyls, can effective adsorption vehicle tail
Gas carries out light-catalyzed reaction, and nano-titanium dioxide can be prevented to reunite, and enhances catalytic activity.As of the invention excellent
Choosing, the quality of step (1) described titanium dioxide are the 40 ~ 60% of diatomite powder.The quality of Nano glass powder is titanium dioxide matter
The 5% of amount.
The process of tripolite loading nano titanium dioxide generallys use sol-gel method, not only complex process, but also
Load effect is poor.In contrast to this, laser welding is as efficient, smart using the laser beam of high-energy density as one kind of heat source
Close, free of contamination welding method can be preferably used in the technique of tripolite loading photochemical catalyst.Wherein, carbon dioxide is continuous
Laser Welding has the advantages that output power height, high conversion efficiency, beam quality are high.Therefore, the present invention selects carbon dioxide laser
Welding technique, so that the tripolite loading nano titanium dioxide of high-specific surface area, technique green non-pollution, high production efficiency are born
Carry it is stronger, it is not easily to fall off.As a preference of the present invention, step (2) protective gas is nitrogen, argon gas, one in helium
Kind；The laser welding uses carbon dioxide continuous laser welding, 5 ~ 35mW of laser power, 25 ~ 1600ns of weld interval.
Preferably, step (3) the aqueous epoxy resins glue is the model HyPer WE1051 of solid content 48-50wt%
Bisphenol A type epoxy resin glue, product solidify after have excellent alkali resistance, water resistance, high-wearing feature and fabulous attachment
Power.
Preferably, step (3) dispersing agent is polycarboxylate salt dispersant, at least one in ammonium polyacrylate dispersant
Kind.
Preferably, step (3) defoaming agent is that dimethyl silicone polymer, silicone emulsion, higher alcohols are fatty acid ester compounded
Object, polyoxyethylene polyoxypropylene pentaerythrite ether, polyoxyethylene polyoxy propyl alcohol amidogen ether, polypropylene glycerol aether, in polyoxypropylene
At least one.
Preferably, in step (3) each raw material according to parts by weight, 30 ~ 50 parts of water, 7 ~ 10 parts of wollastonite in powder, lime stone 8 ~
11 parts, 6 ~ 9 parts of methylcellulose, 18 ~ 22 parts of aqueous epoxy resins glue, 8 ~ 11 parts of bentonite, 1 ~ 1.5 part of dispersing agent, defoaming agent
0.5 ~ 1 part, diatomite weld load nano-titanium dioxide 15 ~ 18%.
A kind of road coating purifying vehicle exhaust prepared by the above method, not only has technique pollution-free
The advantages of, and load of the nano-titanium dioxide on diatomite surface is secured, and it is not easily to fall off.
A kind of road coating and preparation method purifying vehicle exhaust provided by the invention, by nano-titanium dioxide, receives
Rice glass powder is added into diatomite powder, is uniformly mixed；In the presence of protective gas, using laser scanner technique to nanometer two
Titanium oxide is welded with diatomite mixed-powder, and micro- melt of Nano glass powder makes nano-titanium dioxide surface form interconnection, with silicon
The firm connection of diatomaceous earth carrier, forms tripolite loading nano titanium dioxide；By water, wollastonite in powder, lime stone, methylcellulose,
After mixing, diatomite weld load nanometer is added in aqueous epoxy resins glue, bentonite, dispersing agent, curing agent and defoaming agent
Titanium dioxide, high-speed stirred are uniformly mixed.Need to be incorporated suitable curing agent when use, curing agent can be selected commercially available
Commodity curing agent can also select aliphatic polyamine, Versamid.
The present invention provides a kind of road coating and preparation method for purifying vehicle exhaust, compared with prior art,
Prominent feature and excellent effect are:
1, the method that the road coating of purification vehicle exhaust is prepared using laser welding process is proposed.
2, make the tripolite loading nano titanium dioxide of high-specific surface area, technique green nothing by way of laser welding
Pollution, high production efficiency, load is stronger, not easily to fall off.
3, diatomite weld load produced by the present invention is nano oxidized is distributed in road paint for purifying vehicle exhaust
When, it can assign coating high adsorption capacity, tail gas can be largely adsorbed on to the surface of catalyst granules, effectively enrichment organic contamination
Object, therefore the degradation efficiency to tail gas is improved, widen the practical application in industry of photocatalysis technology.
Specific embodiment
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention
Range be only limitted to example below.Without departing from the idea of the above method of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
(1) average grain diameter is added for the titanium dioxide of 300nm, Nano glass powder into diatomite powder, is uniformly mixed, obtains
Mixed-powder；The quality of titanium dioxide is the 48% of diatomite powder；The quality of Nano glass powder is the 5% of titanium dioxide quality.；
(2) in the presence of protective gas, Laser Welding is carried out to the mixed-powder that step (1) obtains using laser scanner technique
It connects, interconnects micro- molten formed with nano-titanium dioxide surface of glass powder, and be firmly combined with diatomite support, obtain diatomite weldering
Connect load nano-titanium dioxide；Protective gas is nitrogen；Laser welding uses carbon dioxide continuous laser welding, laser power
15mW, weld interval 700ns；
(3) first by water, wollastonite in powder, lime stone, methylcellulose, aqueous epoxy resins glue, bentonite, dispersing agent, defoaming agent
It is uniformly mixed, the diatomite weld load nano-titanium dioxide that step (2) obtain then is added, is stirred with the revolving speed of 680r/min
54min, so that each raw material is uniformly mixed to get the road coating of purification vehicle exhaust；Aqueous epoxy resins glue is solid content
The bisphenol A type epoxy resin glue of the model HyPer WE1051 of 50wt%；Dispersing agent is polycarboxylate salt dispersant；Defoaming agent is
Dimethyl silicone polymer；Each raw material according to parts by weight, 45 parts of water, 9 parts of wollastonite in powder, 9 parts of lime stone, 7 parts of methylcellulose,
19 parts of aqueous epoxy resins glue, 9 parts of bentonite, 1.3 parts of dispersing agent, 0.7 part of defoaming agent, diatomite weld load nanometer titanium dioxide
17 parts of titanium.
Embodiment 2
(1) average grain diameter is added for the titanium dioxide of 300nm, Nano glass powder into diatomite powder, is uniformly mixed, obtains
Mixed-powder；The quality of titanium dioxide is the 45% of diatomite powder；The quality of Nano glass powder is the 5% of titanium dioxide quality；
(2) in the presence of protective gas, Laser Welding is carried out to the mixed-powder that step (1) obtains using laser scanner technique
It connects, interconnects micro- molten formed with nano-titanium dioxide surface of glass powder, and be firmly combined with diatomite support, obtain diatomite weldering
Connect load nano-titanium dioxide；Protective gas is argon gas；Laser welding uses carbon dioxide continuous laser welding, laser power
15mW, weld interval 1300ns；
(3) first by water, wollastonite in powder, lime stone, methylcellulose, aqueous epoxy resins glue, bentonite, dispersing agent, defoaming agent
It is uniformly mixed, the diatomite weld load nano-titanium dioxide that step (2) obtain then is added, is stirred with the revolving speed of 650r/min
55min, so that each raw material is uniformly mixed to get the road coating of purification vehicle exhaust；Aqueous epoxy resins glue is solid content
The bisphenol A type epoxy resin glue of the model HyPer WE1051 of 50wt%；Dispersing agent is ammonium polyacrylate dispersant；Defoaming agent
For silicone emulsion；Each raw material is according to parts by weight, 40 parts of water, 8 parts of wollastonite in powder, 9 parts of lime stone, 7 parts of methylcellulose, aqueous
19 parts of epoxide-resin glue, 9 parts of bentonite, 1.2 parts of dispersing agent, 0.7 part of defoaming agent, diatomite weld load nano-titanium dioxide 16
Part.
Embodiment 3
(1) average grain diameter is added for the titanium dioxide of 400nm, Nano glass powder into diatomite powder, is uniformly mixed, obtains
Mixed-powder；The quality of titanium dioxide is the 55% of diatomite powder；The quality of Nano glass powder is the 5% of titanium dioxide quality；
(2) in the presence of protective gas, Laser Welding is carried out to the mixed-powder that step (1) obtains using laser scanner technique
It connects, interconnects micro- molten formed with nano-titanium dioxide surface of glass powder, and be firmly combined with diatomite support, obtain diatomite weldering
Connect load nano-titanium dioxide；Protective gas is helium；Laser welding uses carbon dioxide continuous laser welding, laser power
30mW, weld interval 500ns；
(3) first by water, wollastonite in powder, lime stone, methylcellulose, aqueous epoxy resins glue, bentonite, dispersing agent, defoaming agent
It is uniformly mixed, the diatomite weld load nano-titanium dioxide that step (2) obtain then is added, is stirred with the revolving speed of 750r/min
45min, so that each raw material is uniformly mixed to get the road coating of purification vehicle exhaust；Aqueous epoxy resins glue is solid content
The bisphenol A type epoxy resin glue of the model HyPer WE1051 of 50wt%；Dispersing agent is polycarboxylate salt dispersant；Defoaming agent is
The fatty acid ester compounded object of higher alcohols；According to parts by weight, 50 parts of water, 9 parts of wollastonite in powder, 10 parts of lime stone, methyl are fine for each raw material
Tie up plain 8 parts, 21 parts of aqueous epoxy resins glue, 10 parts of bentonite, 1.4 parts of dispersing agent, 0.8 part of defoaming agent, diatomite weld load
17 parts of nano-titanium dioxide.
Embodiment 4
(1) average grain diameter is added for the titanium dioxide of 250nm, Nano glass powder into diatomite powder, is uniformly mixed, obtains
Mixed-powder；The quality of titanium dioxide is the 40% of diatomite powder；The quality of Nano glass powder is the 5% of titanium dioxide quality；
(2) in the presence of protective gas, Laser Welding is carried out to the mixed-powder that step (1) obtains using laser scanner technique
It connects, interconnects micro- molten formed with nano-titanium dioxide surface of glass powder, and be firmly combined with diatomite support, obtain diatomite weldering
Connect load nano-titanium dioxide；Protective gas is nitrogen；Laser welding use carbon dioxide continuous laser welding, laser power 5mW,
Weld interval 1600ns；
(3) first by water, wollastonite in powder, lime stone, methylcellulose, aqueous epoxy resins glue, bentonite, dispersing agent, defoaming agent
It is uniformly mixed, the diatomite weld load nano-titanium dioxide that step (2) obtain then is added, is stirred with the revolving speed of 600r/min
60min, so that each raw material is uniformly mixed to get the road coating of purification vehicle exhaust；Aqueous epoxy resins glue is solid content
The bisphenol A type epoxy resin glue of the model HyPer WE1051 of 50wt%；Dispersing agent is ammonium polyacrylate dispersant；Defoaming agent
For polyoxyethylene polyoxypropylene pentaerythrite ether；Each raw material according to parts by weight, 50 parts of water, 7 parts of wollastonite in powder, 8 parts of lime stone,
6 parts of methylcellulose, 18 parts of aqueous epoxy resins glue, 8 parts of bentonite, 1 part of dispersing agent, 0.5 part of defoaming agent, diatomite welding are negative
Carry 15 parts of nano-titanium dioxide.
Embodiment 5
(1) average grain diameter is added for the titanium dioxide of 450nm, Nano glass powder into diatomite powder, is uniformly mixed, obtains
Mixed-powder；The quality of titanium dioxide is the 60% of diatomite powder；The quality of Nano glass powder is the 5% of titanium dioxide quality；
(2) in the presence of protective gas, Laser Welding is carried out to the mixed-powder that step (1) obtains using laser scanner technique
It connects, interconnects micro- molten formed with nano-titanium dioxide surface of glass powder, and be firmly combined with diatomite support, obtain diatomite weldering
Connect load nano-titanium dioxide；Protective gas is argon gas；Laser welding uses carbon dioxide continuous laser welding, laser power
35mW, weld interval 25ns；
(3) first by water, wollastonite in powder, lime stone, methylcellulose, aqueous epoxy resins glue, bentonite, dispersing agent, defoaming agent
It is uniformly mixed, the diatomite weld load nano-titanium dioxide that step (2) obtain then is added, is stirred with the revolving speed of 800r/min
40min, so that each raw material is uniformly mixed to get the road coating of purification vehicle exhaust；Aqueous epoxy resins glue is solid content
The bisphenol A type epoxy resin glue of the model HyPer WE1051 of 50wt%；Dispersing agent is polycarboxylate salt dispersant；Defoaming agent is
Polyoxyethylene polyoxy propyl alcohol amidogen ether；According to parts by weight, 50 parts of water, 10 parts of wollastonite in powder, 11 parts of lime stone, methyl are fine for each raw material
9 parts of dimension element, 22 parts of aqueous epoxy resins glue, 11 parts of bentonite, 1.5 parts of dispersing agent, 1 part of defoaming agent, diatomite weld load are received
18 parts of titanium dioxide of rice.
Comparative example 1
Comparative example 1 compared with Example 5, does not use diatomite weld load nano-titanium dioxide, but directly by nano-silica
Change titanium is mixed with water, wollastonite in powder, lime stone, methylcellulose, aqueous epoxy resins glue, bentonite, dispersing agent and defoaming agent
It closes object to be uniformly mixed, the road coating of purification vehicle exhaust, other each raw materials and process conditions is made and embodiment 5 is identical.
The test method of performance indicator are as follows:
The road of purification vehicle exhaust prepared by embodiment 1-5 and comparative example 1 is applied to absorb with coating and decomposes simulation road
Face vehicle exhaust, steps are as follows:
The Versamid that coating quality 1% is added in road paint is stirred evenly as curing agent, 40cm × 40cm's
Natural air drying 24 hours after the coating of concrete block brushing thickness 1mm, closed system is placed it in later, and simulation is passed through automobile
Tail gas NO2Initial concentration is 0.3g/ml, and the ultraviolet index of simulated solar irradiation is 7, is irradiated 1h, and 2h, 3h test NO2It is dense
Degree measures catalytic degradation effect, as shown in table 1.
Table 1: 1 gained road coating property test result of embodiment 1-5 and comparative example
Claims (9)
1. a kind of preparation method for the road coating for purifying vehicle exhaust, which is characterized in that the detailed process of preparation are as follows:
(1) titanium dioxide of 200 ~ 500nm, Nano glass powder are added into diatomite powder, are uniformly mixed, obtain mixed powder
End；
(2) in the presence of protective gas, Laser Welding is carried out to the mixed-powder that step (1) obtains using laser scanner technique
It connects, interconnects micro- molten formed with nano-titanium dioxide surface of glass powder, and be firmly combined with diatomite support, obtain diatomite weldering
Connect load nano-titanium dioxide；
(3) first by water, wollastonite in powder, lime stone, methylcellulose, aqueous epoxy resins glue, bentonite, dispersing agent, defoaming agent
It is uniformly mixed, the diatomite weld load nano-titanium dioxide that step (2) obtain is added, then with the revolving speed of 600 ~ 800r/min
40 ~ 60min is stirred, so that each raw material is uniformly mixed to get the road coating of purification vehicle exhaust.
2. a kind of preparation method for the road coating for purifying vehicle exhaust according to claim 1, it is characterised in that: step
(1) quality of the titanium dioxide is the 40 ~ 60% of diatomite powder, and the quality of Nano glass powder is the 5% of titanium dioxide quality.
3. a kind of preparation method for the road coating for purifying vehicle exhaust according to claim 1, it is characterised in that: step
(2) protective gas is one of nitrogen, argon gas, helium.
4. a kind of preparation method for the road coating for purifying vehicle exhaust according to claim 1, it is characterised in that: step
(2) laser welding uses carbon dioxide continuous laser welding, 5 ~ 35mW of laser power, 25 ~ 1600ns of weld interval.
5. a kind of preparation method for the road coating for purifying vehicle exhaust according to claim 1, it is characterised in that: step
(3) the aqueous epoxy resins glue is copolymer, the vinyl acetate/versatic acid ethylene copolymer, propylene of ethylene/vinyl acetate
At least one of acid copolymer.
6. a kind of preparation method for the road coating for purifying vehicle exhaust according to claim 1, it is characterised in that: step
(3) dispersing agent is at least one of polycarboxylate salt dispersant, ammonium polyacrylate dispersant.
7. a kind of preparation method for the road coating for purifying vehicle exhaust according to claim 1, it is characterised in that: step
(3) defoaming agent is dimethyl silicone polymer, silicone emulsion, the fatty acid ester compounded object of higher alcohols, polyoxyethylene polyoxypropylene
At least one of pentaerythrite ether, polyoxyethylene polyoxy propyl alcohol amidogen ether, polypropylene glycerol aether, polyoxypropylene.
8. a kind of preparation method for the road coating for purifying vehicle exhaust according to claim 1, it is characterised in that: step
(3) in each raw material according to parts by weight, 30 ~ 50 parts of water, 7 ~ 10 parts of wollastonite in powder, 8 ~ 11 parts of lime stone, methylcellulose 6 ~ 9
Part, the welding of 18 ~ 22 parts of aqueous epoxy resins glue, 8 ~ 11 parts of bentonite, 1 ~ 1.5 part of dispersing agent, 0.5 ~ 1 part of defoaming agent, diatomite
15 ~ 18 parts of load nano-titanium dioxide.
9. a kind of road coating for purification vehicle exhaust that any one of claim 1 ~ 8 the method is prepared.
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| CN113637317A (en) * | 2021-08-13 | 2021-11-12 | 常州丰锦塑胶科技有限公司 | High-density memory sponge and compounding process thereof |
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| CN113637317A (en) * | 2021-08-13 | 2021-11-12 | 常州丰锦塑胶科技有限公司 | High-density memory sponge and compounding process thereof |
| CN113637317B (en) * | 2021-08-13 | 2022-06-28 | 常州丰锦塑胶科技有限公司 | High-density memory sponge and compounding process thereof |
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