CN110256893A - It can assist the guardrail coating additive and preparation method thereof of purification vehicle exhaust - Google Patents
It can assist the guardrail coating additive and preparation method thereof of purification vehicle exhaust Download PDFInfo
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- CN110256893A CN110256893A CN201910524317.8A CN201910524317A CN110256893A CN 110256893 A CN110256893 A CN 110256893A CN 201910524317 A CN201910524317 A CN 201910524317A CN 110256893 A CN110256893 A CN 110256893A
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- Prior art keywords
- conch meal
- porous
- nano
- preparation
- ethyl alcohol
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- 239000011248 coating agent Substances 0.000 title claims abstract description 40
- 238000000576 coating method Methods 0.000 title claims abstract description 40
- 239000000654 additive Substances 0.000 title claims abstract description 17
- 230000000996 additive effect Effects 0.000 title claims abstract description 17
- 238000000746 purification Methods 0.000 title claims abstract description 11
- 238000002360 preparation method Methods 0.000 title claims description 36
- 235000012054 meals Nutrition 0.000 claims abstract description 101
- 239000006185 dispersion Substances 0.000 claims abstract description 21
- 239000007863 gel particle Substances 0.000 claims abstract description 21
- 230000004888 barrier function Effects 0.000 claims abstract description 13
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 150000001450 anions Chemical class 0.000 claims abstract description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 84
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 57
- 235000019441 ethanol Nutrition 0.000 claims description 45
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 29
- 239000002904 solvent Substances 0.000 claims description 29
- 238000001238 wet grinding Methods 0.000 claims description 28
- 239000010936 titanium Substances 0.000 claims description 18
- 229910052719 titanium Inorganic materials 0.000 claims description 18
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical class [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 12
- 229920002101 Chitin Polymers 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 8
- 239000012752 auxiliary agent Substances 0.000 claims description 8
- 238000000498 ball milling Methods 0.000 claims description 6
- 125000005909 ethyl alcohol group Chemical group 0.000 claims description 6
- 150000002500 ions Chemical class 0.000 claims description 6
- 239000004615 ingredient Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims 1
- 239000000843 powder Substances 0.000 abstract description 11
- 238000001354 calcination Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 238000001179 sorption measurement Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 239000003973 paint Substances 0.000 abstract description 4
- 230000001699 photocatalysis Effects 0.000 abstract description 4
- 238000007146 photocatalysis Methods 0.000 abstract description 4
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000006731 degradation reaction Methods 0.000 abstract description 2
- 239000005416 organic matter Substances 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 239000000809 air pollutant Substances 0.000 description 2
- 231100001243 air pollutant Toxicity 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229910052703 rhodium Inorganic materials 0.000 description 2
- 239000010948 rhodium Substances 0.000 description 2
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- GCNLQHANGFOQKY-UHFFFAOYSA-N [C+4].[O-2].[O-2].[Ti+4] Chemical compound [C+4].[O-2].[O-2].[Ti+4] GCNLQHANGFOQKY-UHFFFAOYSA-N 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical group [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Classifications
-
- 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
- B01D53/007—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 by irradiation
-
- 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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
-
- 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
-
- 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
-
- 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
-
- 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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Catalysts (AREA)
- Paints Or Removers (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a kind of pavement material technical fields, are related to a kind of for highway barrier paint field, specially a kind of highway barrier coating additive that can assist purification vehicle exhaust.By obtaining um porous conch meal colloidal sol by calcining, microetch, dispersion, and cooperate nano-titanium dioxide using the shell discarded as raw material, nano-titanium dioxide modified um porous conch meal gel particle is obtained.The nano-titanium dioxide of adsorption has photocatalysis, while being also common nanometer anion powder in coating, and internal um porous conch meal has good suction-operated.It applies it in highway barrier coating, it can not only increase the photocatalysis of coating, the organic matter of degradation paint adsorption, simultaneously, suction-operated of the coating surface for pollutants in air can also be increased, and then enhance the nanometer anion powder in coating for the clean-up effect of air.
Description
Technical field
The invention belongs to pavement material technical fields, are related to one kind for highway barrier paint field, specially one kind can
The highway barrier coating additive of auxiliary purification vehicle exhaust.
Background technique
With the development of tourism industry in recent years, self-driving travel has become a kind of trend of ever more popular.However, following
Safety also attract attention extensively, especially highway self-driving travel, the traffic accident as caused by fatigue driving etc. clearly exists
Mesh.Usually on the guardrail of highway for brushing warning coating come remind and instruct driver carry out safe driving.Due to highway
Guardrail coating specific application environment requirement, so that it is needed to meet corresponding performance.
The a large amount of tail gas of motor vehicle emission on highway, the main component of vehicle exhaust be solid suspended particle, carbon monoxide,
Hydrocarbon, oxynitrides, sulfur dioxide etc., these are all pollutants, and therefore, highway barrier coating has can be net
Change the potential demand of this function of vehicle exhaust.
Currently, the coating with air purification function is usually to add nano-negative ion ingredient in coating, by will
The material of enough constantly release anions is added in coating, makes its permanent release anion, decomposes the pernicious gas in air.So
And this coating is typically used in indoor environment, air flows relatively slow, highway ring express for air flow property
Border, the anion discharged in coating are easy to be diffused into the wind in other environment, exist can not effectively purify highway pavement and
The defect of a large amount of vehicle exhaust in the presence of its neighbouring environment.
In order to purify vehicle exhaust, ternary catalyzing unit is usually mounted on automobile, it can be by the oxygen in vehicle exhaust
Change carbon, hydrocarbon, oxynitrides purification.Its main catalytic action of ternary catalyzing unit, what catalyst generallyd use is gold
Belong to the noble metals such as platinum, rhodium, palladium, using aluminium oxide asbestos fibre felt as carrier, at high temperature, by Oxidation of Carbon Monoxide at titanium dioxide
Carbon, oxidizing hydrocarbon Cheng Shui and carbon dioxide, are reduced into nitrogen and oxygen for oxynitrides.However, as catalyst
The noble metals valence such as metal platinum, rhodium, palladium chromium it is expensive, be used on automobile and can be said to be feasible, if being used as the addition of coating
For ingredient on the facilities such as highway barrier, cost is just too high.Therefore, it is necessary to study design one kind to be widely applied to apply
The adding ingredient that can be catalyzed and purify vehicle exhaust in material.
Summary of the invention
The present invention is the above problem solved in the presence of the prior art, provides a kind of public affairs that can assist purification vehicle exhaust
Road guardrail coating additive, coating additive are negative the modified conch meal gel particle of ion component, specially nano-silica
Change titanium-um porous conch meal gel particle.
Nano-titanium dioxide-um porous conch meal gel particle preparation method, comprising:
One, the preparation of um porous conch meal colloidal sol
(1) preparation of primary conch meal: shell is ground, and is fully ground, 300 meshes is crossed, obtains micron order conch meal, then
It at 300-450 DEG C, is calcined 5-20 minutes in aerobic environment, gets rid of the chitin element in conch meal, primary conch meal is made
It is spare.Medium temperature calcining can effectively remove the element of the chitin in conch meal under aerobic environment, and calcination temperature is excessively high, will lead to calcium carbonate
It decomposes, it is undesirable；Calcination temperature is too low, haves the defects that cannot be removed effectively chitin element.
(2) primary conch meal made from step (1) wet-milling: is subjected to wet-milling, the ball milling 1h in ball grinder, wherein shell
Powder and ethyl alcohol are mixed according to the ratio of 100g:50-100ml, and wet milling assistant is ethyl alcohol.Further wet-milling is carried out after firing, it can
The agglomeration of powder caused by effectively reduce because of calcining, it is ensured that the granularity of shell powder maintains in the micron-scale, and granularity is equal
It is even.
(3) it prepares microcorrosion dispersion solvent: by acetic acid in ethanol solution, stirring, micro- corruption is made
The percent by volume of corrosion dispersion solvent, acetic acid and ethyl alcohol is 1-3%.
(4) conch meal after wet-milling in 100g step (2) is distributed to obtained by 1L step (3) together with auxiliary agent ethyl alcohol
Microcorrosion dispersion solvent in, using magnetic stirrer 1-3h, um porous conch meal colloidal sol is made.Microcorrosion point
Slight erosion can be carried out to conch meal by dissipating the acetic acid in solvent, so that its surface is formed corrosion pit, obtained the shellfish of porous structure
Shell powder can improve the adsorption effect of conch meal.The dosage of acetic acid can excessively make a large amount of conch meal dissolve, the dosage of acetic acid
It is very few to have the defects that effective porous structure is obtained.
Two, the preparation of nano titanic oxide sol
By pH be 3-5 alcohol solvent in be mixed into titanate esters, be prepared nano titanic oxide sol, titanate esters and ethyl alcohol according to
The volume ratio of 1:10 mixes, and after second acid for adjusting pH to 3-5, continued mechanical stirs 2-4h, obtains nano titanic oxide sol.
Three, nano-titanium dioxide-um porous conch meal gel particle preparation
The um porous conch meal colloidal sol of preparation and nano titanic oxide sol are mixed with the volume ratio of 3-5:1, it is old at room temperature
After changing 5-10h, nano-titanium dioxide-um porous conch meal gel particle is obtained.
Wherein, in preparation-obtained nano-titanium dioxide-um porous conch meal gel particle, a large amount of nano-silica
Change the skeleton surface that titanium is adsorbed on porous structure, a small amount of nano-titanium dioxide is adsorbed in the hole of porous structure, not shadow
Ring the suction-operated of porous conch meal.
Wherein, the element of the chitin in conch meal can be effectively removed by medium temperature calcining under aerobic environment, calcination temperature is excessively high,
It will lead to Decomposition of Calcium Carbonate, it is undesirable；Calcination temperature is too low, haves the defects that cannot be removed effectively chitin element.After firing into
The further wet-milling of row, the agglomeration of powder caused by can effectively reducing because of calcining, it is ensured that the granularity of shell powder maintains
Micron order, and epigranular.Solvent in auxiliary agent used in wet-milling and colloidal sol preparation process is ethyl alcohol, therefore, can be with
The conch meal after wet-milling is directly distributed to microcorrosion dispersion solvent together with auxiliary agent ethyl alcohol.In microcorrosion dispersion solvent
It is added to suitable acetic acid, acetic acid can cause slight erosion to calcium carbonate, make conch meal surface forming part pit, thus
To the conch meal of porous structure.The suction-operated of conch meal can be enhanced in porous structure.The dosage of acetic acid can excessively make largely
Conch meal dissolution, the dosage of acetic acid is very few to have the defects that effective porous structure can not be obtained.In addition, if using strong
Acid can also have acid too strong the case where causing a large amount of conch meals to dissolve such as hydrochloric acid, nitric acid.Preparing TiO 2 sol
In the process, equally using ethyl alcohol as solvent, and cooperate lasting mechanical stirring, it is ensured that obtain nano titanic oxide sol.It will
The um porous conch meal colloidal sol of 3-5 times of nano titanic oxide sol is mixed with nano titanic oxide sol, so that largely
Rice titanium dioxide is adsorbed on the skeleton surface of porous structure, and a small amount of nano-titanium dioxide is adsorbed in the hole of porous structure,
Ensure that the suction-operated of porous conch meal is unaffected.The nano-titanium dioxide of adsorption has photocatalysis, while
It is common nanometer anion powder in coating, internal um porous conch meal is to good suction-operated.Therefore, it will make
Standby obtained nano-titanium dioxide-um porous conch meal gel particle is applied in highway barrier coating, can not only be increased
The photocatalysis of coating, the organic matter of degradation paint adsorption, at the same time it can also increase coating surface for dirty in air
The suction-operated of object is contaminated, so that air pollutants are gathered in the radiation scope of nano-negative ion, and then enhances receiving in coating
Clean-up effect of the rice negative ion powder for air.
Specific embodiment
Embodiment 1
Nano-titanium dioxide-um porous conch meal gel particle preparation method, comprising:
One, the preparation of um porous conch meal colloidal sol
(1) preparation of primary conch meal: shell is ground, and is fully ground, 300 meshes is crossed, obtains micron order conch meal, then
It at 300 DEG C, is calcined 20 minutes in aerobic environment, gets rid of the chitin element in conch meal, it is spare that primary conch meal is made；
(2) wet-milling: by primary conch meal made from step (1) carry out wet-milling, the ball milling 1h in ball grinder, wherein conch meal with
Ethyl alcohol is mixed according to the ratio of 100g:100ml, and wet milling assistant is ethyl alcohol；
(3) it prepares microcorrosion dispersion solvent: by acetic acid in ethanol solution, stirring, microcorrosion is made
The percent by volume of dispersion solvent, acetic acid and ethyl alcohol is 3%；
(4) conch meal after wet-milling in 100g step (2) is distributed to together with auxiliary agent ethyl alcohol micro- obtained by 1L step (3)
In corrosivity dispersion solvent, using magnetic stirrer 3h, um porous conch meal colloidal sol is made；
Two, the preparation of nano titanic oxide sol
Titanate esters are mixed into the alcohol solvent for being 5 by pH, nano titanic oxide sol are prepared, titanate esters and ethyl alcohol are according to 1:
10 volume ratio mixing, after second acid for adjusting pH to 5, continued mechanical stirs 4h, obtains nano titanic oxide sol；
Three, nano-titanium dioxide-um porous conch meal gel particle preparation
The um porous conch meal colloidal sol of preparation and nano titanic oxide sol are mixed with the volume ratio of 5:1, are aged at room temperature
After 10h, nano-titanium dioxide-um porous conch meal gel particle is obtained.
Embodiment 2
Nano-titanium dioxide-um porous conch meal gel particle preparation method, comprising:
One, the preparation of um porous conch meal colloidal sol
(1) preparation of primary conch meal: shell is ground, and is fully ground, 300 meshes is crossed, obtains micron order conch meal, then
It at 400 DEG C, is calcined 10 minutes in aerobic environment, gets rid of the chitin element in conch meal, it is spare that primary conch meal is made；
(2) wet-milling: by primary conch meal made from step (1) carry out wet-milling, the ball milling 1h in ball grinder, wherein conch meal with
Ethyl alcohol is mixed according to the ratio of 100g:80ml, and wet milling assistant is ethyl alcohol；
(3) it prepares microcorrosion dispersion solvent: by acetic acid in ethanol solution, stirring, microcorrosion is made
The percent by volume of dispersion solvent, acetic acid and ethyl alcohol is 2%；
(4) conch meal after wet-milling in 100g step (2) is distributed to together with auxiliary agent ethyl alcohol micro- obtained by 1L step (3)
In corrosivity dispersion solvent, using magnetic stirrer 2h, um porous conch meal colloidal sol is made；
Two, the preparation of nano titanic oxide sol
Titanate esters are mixed into the alcohol solvent for being 4 by pH, nano titanic oxide sol are prepared, titanate esters and ethyl alcohol are according to 1:
10 volume ratio mixing, after second acid for adjusting pH to 4, continued mechanical stirs 3h, obtains nano titanic oxide sol；
Three, nano-titanium dioxide-um porous conch meal gel particle preparation
The um porous conch meal colloidal sol of preparation and nano titanic oxide sol are mixed with the volume ratio of 4:1, are aged at room temperature
After 8h, nano-titanium dioxide-um porous conch meal gel particle is obtained.
Embodiment 3
Nano-titanium dioxide-um porous conch meal gel particle preparation method, comprising:
One, the preparation of um porous conch meal colloidal sol
(1) preparation of primary conch meal: shell is ground, and is fully ground, 300 meshes is crossed, obtains micron order conch meal, then
It at 450 DEG C, is calcined 5 minutes in aerobic environment, gets rid of the chitin element in conch meal, it is spare that primary conch meal is made；
(2) wet-milling: by primary conch meal made from step (1) carry out wet-milling, the ball milling 1h in ball grinder, wherein conch meal with
Ethyl alcohol is mixed according to the ratio of 100g:50ml, and wet milling assistant is ethyl alcohol；
(3) it prepares microcorrosion dispersion solvent: by acetic acid in ethanol solution, stirring, microcorrosion is made
The percent by volume of dispersion solvent, acetic acid and ethyl alcohol is 1%.
(4) conch meal after wet-milling in 100g step (2) is distributed to obtained by 1L step (3) together with auxiliary agent ethyl alcohol
Microcorrosion dispersion solvent in, using magnetic stirrer 1h, um porous conch meal colloidal sol is made；
Two, the preparation of nano titanic oxide sol
Titanate esters are mixed into the alcohol solvent for being 3 by pH, nano titanic oxide sol are prepared, titanate esters and ethyl alcohol are according to 1:
10 volume ratio mixing, after second acid for adjusting pH to 3, continued mechanical stirs 2h, obtains nano titanic oxide sol.
Three, nano-titanium dioxide-um porous conch meal gel particle preparation
The um porous conch meal colloidal sol of preparation and nano titanic oxide sol are mixed with the volume ratio of 3:1, are aged at room temperature
After 5h, nano-titanium dioxide-um porous conch meal gel particle is obtained.
Comparative example
As a comparison with common nano-titanium dioxide anionic additive.
The coating additive of embodiment 1-3 is added in coating, and with added with common nano-titanium dioxide bear from
Sub- additive compares, and compares various coating respectively in confined space and the flowing space to the clean-up effect of vehicle exhaust.Through
48 hours simulation tests are crossed, the results are shown in Table 1.
The clean-up effect test of the coating of coating additive of the table 1 added with embodiment 1-3 and comparative example
| The purifying rate (%) of confined space | The purifying rate (%) of the flowing space | |
| Embodiment 1 | 89 | 85 |
| Embodiment 2 | 87 | 84 |
| Embodiment 3 | 88 | 84 |
| Comparative example | 85 | 60 |
Can be seen that coating additive of the invention from the comparing result of embodiment 1-3 and comparative example can be obviously improved coating
To the clean-up effect of air in the flowing space.This is because nano-titanium dioxide-micron employed in coating additive is more
Hole conch meal gel particle can increase suction-operated of the coating surface for pollutants in air, so that air pollutants are poly-
Collection in the radiation scope of nano-negative ion, and then enhance coating in nanometer anion powder for air clean-up effect, two
Person has apparent cooperative gain effect.
The above embodiments are merely illustrative of the technical solutions of the present invention rather than limiting the scope of the invention, although ginseng
The present invention is explained in detail according to preferred embodiment, those skilled in the art should understand that, it can be to of the invention
Technical solution is modified or replaced equivalently, without departing from the spirit and scope of technical solution of the present invention.
Claims (5)
1. one kind can assist the highway barrier coating additive of purification vehicle exhaust, the modified conch meal of the ion component that is negative is solidifying
Glue particle, which is characterized in that anion ingredient is nano-titanium dioxide, and conch meal is um porous conch meal.
2. the highway barrier coating additive according to claim 1 for assisting purification vehicle exhaust, which is characterized in that
The um porous conch meal is um porous conch meal colloidal sol, preparation method are as follows:
(1) preparation of primary conch meal: shell is ground, and is fully ground, 300 meshes is crossed, obtains micron order conch meal, then
It at 300-450 DEG C, is calcined 5-20 minutes in aerobic environment, gets rid of the chitin element in conch meal, primary conch meal is made
It is spare；
(2) wet-milling: by primary conch meal made from step (1) carry out wet-milling, the ball milling 1h in ball grinder, wherein conch meal with
Ethyl alcohol is mixed according to the ratio of 100g:50-100ml, and wet milling assistant is ethyl alcohol；
(3) it prepares microcorrosion dispersion solvent: by acetic acid in ethanol solution, stirring, microcorrosion is made
The percent by volume of dispersion solvent, acetic acid and ethyl alcohol is 1-3%；
(4) conch meal after wet-milling in 100g step (2) is distributed to together with auxiliary agent ethyl alcohol micro- obtained by 1L step (3)
In corrosivity dispersion solvent, using magnetic stirrer 1-3h, um porous conch meal colloidal sol is made.
3. the highway barrier coating additive according to claim 1 or 2 for assisting purification vehicle exhaust, feature exist
In: the nano-titanium dioxide is nano titanic oxide sol, preparation method are as follows:
By pH be 3-5 alcohol solvent in be mixed into titanate esters, be prepared nano titanic oxide sol, titanate esters and ethyl alcohol according to
The volume ratio of 1:10 mixes, and after second acid for adjusting pH to 3-5, continued mechanical stirs 2-4h, obtains nano titanic oxide sol.
4. the highway barrier coating additive according to claim 3 for assisting purification vehicle exhaust, which is characterized in that
Prepared um porous conch meal colloidal sol and nano titanic oxide sol are mixed with the volume ratio of 3-5:1, are aged at room temperature
After 5-10h, nano-titanium dioxide modified um porous conch meal gel particle is obtained.
5. a kind of highway barrier coating additive according to any one of claims 1-4 for assisting purification vehicle exhaust
Preparation method, which comprises the steps of:
One, the preparation of um porous conch meal colloidal sol
(1) preparation of primary conch meal: shell is ground, and is fully ground, 300 meshes is crossed, obtains micron order conch meal, then
It at 300-450 DEG C, is calcined 5-20 minutes in aerobic environment, gets rid of the chitin element in conch meal, primary conch meal is made
It is spare；
(2) wet-milling: by primary conch meal made from step (1) carry out wet-milling, the ball milling 1h in ball grinder, wherein conch meal with
Ethyl alcohol is mixed according to the ratio of 100g:50-100ml, and wet milling assistant is ethyl alcohol；
(3) it prepares microcorrosion dispersion solvent: by acetic acid in ethanol solution, stirring, microcorrosion is made
The percent by volume of dispersion solvent, acetic acid and ethyl alcohol is 1-3%；
(4) conch meal after wet-milling in 100g step (2) is distributed to together with auxiliary agent ethyl alcohol micro- obtained by 1L step (3)
In corrosivity dispersion solvent, using magnetic stirrer 1-3h, um porous conch meal colloidal sol is made；
Two, the preparation of nano titanic oxide sol
By pH be 3-5 alcohol solvent in be mixed into titanate esters, be prepared nano titanic oxide sol, titanate esters and ethyl alcohol according to
The volume ratio of 1:10 mixes, and after second acid for adjusting pH to 3-5, continued mechanical stirs 2-4h, obtains nano titanic oxide sol；
Three, nano-titanium dioxide-um porous conch meal gel particle preparation
The um porous conch meal colloidal sol of preparation and nano titanic oxide sol are mixed with the volume ratio of 3-5:1, it is old at room temperature
After changing 5-10h, nano-titanium dioxide-um porous conch meal gel particle is obtained.
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| CN112592617A (en) * | 2021-03-02 | 2021-04-02 | 广东合胜实业股份有限公司 | Antibacterial composite material for coating and preparation method thereof |
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