CN106220122B - A kind of antibacterial coating of photocatalysis and its method - Google Patents
A kind of antibacterial coating of photocatalysis and its method Download PDFInfo
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- CN106220122B CN106220122B CN201610533674.7A CN201610533674A CN106220122B CN 106220122 B CN106220122 B CN 106220122B CN 201610533674 A CN201610533674 A CN 201610533674A CN 106220122 B CN106220122 B CN 106220122B
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- metakaolin
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- 239000011248 coating agent Substances 0.000 title claims abstract description 41
- 238000000576 coating method Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000007146 photocatalysis Methods 0.000 title claims abstract description 19
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 19
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 18
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000005083 Zinc sulfide Substances 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 11
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 11
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000004567 concrete Substances 0.000 claims description 55
- 239000000203 mixture Substances 0.000 claims description 17
- 238000007580 dry-mixing Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 8
- 238000012423 maintenance Methods 0.000 claims description 7
- 230000015271 coagulation Effects 0.000 claims description 6
- 238000005345 coagulation Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 4
- 230000001954 sterilising effect Effects 0.000 abstract description 7
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 5
- 239000011941 photocatalyst Substances 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 36
- 241000894006 Bacteria Species 0.000 description 27
- 230000007797 corrosion Effects 0.000 description 16
- 238000005260 corrosion Methods 0.000 description 16
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 12
- 239000003973 paint Substances 0.000 description 6
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 241000605178 Halothiobacillus neapolitanus Species 0.000 description 4
- 244000007853 Sarothamnus scoparius Species 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 238000002791 soaking Methods 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 239000004925 Acrylic resin Substances 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 241000700605 Viruses Species 0.000 description 2
- 230000002421 anti-septic effect Effects 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000012531 culture fluid Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000000855 fungicidal effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- -1 hydroxyl radical free radical Chemical class 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- ALVYUZIFSCKIFP-UHFFFAOYSA-N triethoxy(2-methylpropyl)silane Chemical compound CCO[Si](CC(C)C)(OCC)OCC ALVYUZIFSCKIFP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
- C04B41/5089—Silica sols, alkyl, ammonium or alkali metal silicate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a kind of antibacterial coating of photocatalysis and its methods.With metakaolin, waterglass, sodium hydroxide is basis material, and zinc sulphide is photo-catalyst material, is mixed with water, is uniformly mixing to obtain sterilization and anticorrosion coating.The advantages that present invention has raw material sources extensive, and cost is relatively low, simple for process, bactericidal property efficient stable.
Description
Technical field
The invention belongs to for concrete structural surface inorganic coating field more particularly to a kind of antibacterial coating of photocatalysis
And its method.
Background technology
The epoch of coastal economy great development are marched toward in the 21st century, China, it is anticipated that in following one period
To there are large quantities of sea port docks, Oversea bridge, tunnel, offshore production platform etc. to use concrete structure.The concrete knot in the areas Lang Jian
Structure due to being subjected to wind for a long time, the beating repeatedly of solarization and wave, the surface layer of concrete structure be easy a large amount of bacterium colony of accumulation and
Microorganism.These bacterium colonies and microorganism is how effectively prevented gradually to cause vast section to the corrosion failure of concrete structure
The attention of worker is ground, and as one of the emphasis of academia's research.Therefore, new material is developed and utilized, new technology solves to mix
The etching problem of Xtah Crude Clay structure is one of the most pressing task that current field of civil engineering scientific worker faces.
In terms of biological corrosion, T- sulfur oxidizing bacteriums, Thiobacillus X, to bite biological sulfuric acid corrosion caused by silicon bacterium be one of which
Common concrete erosion, detailed process are：Organic and mineral suspensions in environment water with the flowing of water body and by
Gradually being deposited on the surface of concrete structure becomes attachment, and the sulfate ion in attachment is restored by sulphur reducing bacteria, generates sulphur
Change hydrogen.Meanwhile hydrogen sulfide gas, by complicated biochemical reaction, oxidation generates acid stronger sulfuric acid, to drop
The pH value of low ambient enviroment.The hydrogen ion of sulfuric acid dissolution release is by diffusing into the inside of concrete, and and inside concrete
Bar construction be in contact, to which the corrosion of concrete and reinforcing bar occur, seriously threaten the safety of concrete building structures.Mesh
Preceding common sterilization material is nano-titanium dioxide, since nano-titanium dioxide can carry out " light-catalyzed reaction ", by light
After excitation, chemical energy is generated, redox reaction is carried out using the chemical energy of generation.Light-catalysed basic principle is to utilize to receive
Rice titanium dioxide is as catalysis material, and under the light radiation of specific wavelength, oxidisability pole is generated on nano-titanium dioxide surface
The high hydroxyl radical free radical in strong hole or reactivity.These holes or free radical can effectively with organic pollution, virus,
Bacterium be in contact with it is compound and generate strong destruction, cause organic pollution to be degraded, virus is killed with bacterium,
To reach degradation environmental contaminants, bactericidal and corrosion-resistant purpose.But nano-titanium dioxide be limited by its preparation process and
The influence of production capacity and potential risk to human body, it would be highly desirable to a kind of novel substitute products are developed, applied to being unsuitable for using
In the antiseptic concrete technique of nano-titanium dioxide.
In addition, current more reinforced concrete block method of inhibiting corrosion existing in the prior art.Such as application No. is
201310232855.2 patent of invention discloses a kind of anticorrosion building concrete, including cement and admixture, also has anti-
Rotten agent and dispersant.The anticorrosion building concrete of the invention is by making isobutyl triethoxy silane penetrate into concrete
Portion chemically reacts with the air and the hydrone in substrate being exposed in acid or alkaline environment, forms hydrophobic process layer,
To inhibit moisture to enter in substrate.When preparing concrete mortar raw material must be added in preservative and dispersant by it
In, and molded concrete block can not be used.Application No. is 201510550106.3 patents of invention to disclose one kind
The acid coated antiseptic concrete method of modified propylene, includes the following steps：Coating test；Scaffold building；The cleaning of concrete；It is mixed
Coagulate the polishing of soil；The repairing of concrete is levelling；Brushing acrylic resin seal coat；Brushing acrylic resin finishing coat；Maintenance.It should
Inventive nature is that acrylic resin seal coat and finishing coat are formed strong protective barrier together, resistance in concrete surface
Water blocking and carbon dioxide enter concrete block.But this method it can not act on concrete block of the long period of soaking in water, because
It can not be still killed for the bacterium on its surface, be easily accessible inside and reinforcing bar is caused to corrode.
Invention content
It is an object of the invention to solve problems of the prior art, and provide a kind of antibacterial coating of photocatalysis and its
Method, to meet the sterilization and anticorrosion requirement that concrete long period of soaking is brought in seawater.Particular technique of the present invention
Scheme is as follows：
The antibacterial coating of photocatalysis, raw material include：Zinc sulphide 20-30 mass parts, metakaolin 20-30 mass parts, waterglass
40-50 mass parts and sodium hydroxide 2-5 mass parts.
Concrete photocatalysis bacteriostasis method, steps are as follows：
By the metakaolin stirring of the zinc sulphide 20-30 mass parts of 20-30 mass parts, dry mixing material A is obtained after mixing；
The sodium hydroxide of the waterglass of 40-50 mass parts and 2-5 mass parts is sufficiently mixed and uniformly obtains mixture B, and
Machine mixing then proceedes to stir on one side, and the water of above-mentioned dry mixing material A and 1-3 mass parts is poured into mixture B together again on one side
In, continue mix, forms coating C；
Coating C is picked, designed concrete block surface is evenly applied to and conserves molding.
The moistening preferably, the designed concrete block is sprinkled water before coating coating.
Preferably, advance 80 mesh screen of mistake of the metakaolin.
Preferably, the maintenance molding is specially that the concrete block after coating is statically placed in normal temperature air to be frozen into
Type.
The photocatalysis anticorrosive paint of the present invention, zinc sulphide, can be bright by the growth of inhibition bacterium as catalysis material
The aobvious corrosion potential for improving concrete component, to slow down biological sulfuric acid to concrete structure erosion and destruction.In the present invention
Metakaolin, waterglass and sodium hydroxide have synergistic effect as binder, with zinc sulphide, further inhibit bacterium
Growth.The advantages that present invention has raw material sources extensive, and cost is relatively low, simple for process, bactericidal property efficient stable.The present invention is suitable
Share the sterilization and anticorrosion of the marine concrete structure in long period of soaking in seawater.
Description of the drawings
Fig. 1 is that the corrosion potential of blank control group and experimental group changes over time figure in the embodiment of the present invention 3.
Specific implementation mode
The present invention is further elaborated and is illustrated with reference to the accompanying drawings and detailed description.Each implementation in the present invention
The technical characteristic of mode can carry out the corresponding combination under the premise of not conflicting with each other.
The antibacterial coating of photocatalysis, raw material include：Zinc sulphide 20-30 mass parts, metakaolin 20-30 mass parts, waterglass
40-50 mass parts and sodium hydroxide 2-5 mass parts.The method that above-mentioned coating is used for concrete sterilization and anticorrosion, steps are as follows：
Pretreatment：Metakaolin crosses 80 mesh screens, concrete test block watering moistening.
It is dry-mixed：The zinc sulphide that will be weighed in said components ratio, metakaolin pour into container, are placed in batch mixer and stir 10
Minute, it is uniformly mixed and obtains dry mixing material A.
Wet mixing：The waterglass and sodium hydroxide that are weighed in said components ratio are placed in batch mixer, are sufficiently mixed uniformly
Obtain mixture B.After machine mixing 3 minutes, continuation is stirred on one side, dry mixing material A and (1-3) part water is poured into together again on one side mixed
It closes in object B, continues mix 2 minutes, form coating C
Coating：Preprepared concrete test block is sprinkled water and is moistened, coating C is picked with rotary broom, is evenly applied to mix
Solidifying soil surface, forms test block D.
Maintenance：Coagulation forming after test block D is statically placed in normal temperature air 24 as a child.
Following embodiment 1-3 are respectively the preparation of fungicidal paint：
Embodiment 1
Pretreatment：Metakaolin crosses 80 mesh screens, concrete test block watering moistening.
It is dry-mixed：23 parts of zinc sulphide is weighed, 27 parts of metakaolin pours into container, is placed in batch mixer and stirs 10 minutes, mixes
Uniformly obtain dry mixing material A.
Wet mixing：It weighs 44.6 parts of waterglass and 3.4 parts of sodium hydroxide is placed in batch mixer, be sufficiently mixed and uniformly mixed
Object B.After machine mixing 3 minutes, continuation is stirred on one side, and dry mixing material A and 2 parts of water are poured into together in mixture B again on one side, is continued
Mix 2 minutes forms coating C
Coating：Preprepared concrete test block is sprinkled water and is moistened, coating C is picked with rotary broom, is evenly applied to mix
Solidifying soil surface, forms test block D.
Maintenance：Coagulation forming after test block D is statically placed in normal temperature air 24 as a child.
Embodiment 2
Pretreatment：Metakaolin crosses 80 mesh screens, concrete test block watering moistening.
It is dry-mixed：21.5 parts of zinc sulphide is weighed, 27.5 parts of metakaolin pours into container, is placed in batch mixer and stirs 10 minutes,
It is uniformly mixed and obtains dry mixing material A.
Wet mixing：It weighs 46 parts of waterglass and 3.5 parts of sodium hydroxide is placed in batch mixer, be sufficiently mixed and uniformly obtain mixture
B.After machine mixing 3 minutes, continuation is stirred on one side, and dry mixing material A and 1.5 parts of water are poured into together in mixture B again on one side, is continued
Mix 2 minutes forms coating C
Coating：Preprepared concrete test block is sprinkled water and is moistened, coating C is picked with rotary broom, is evenly applied to mix
Solidifying soil surface, forms test block D.
Maintenance：Coagulation forming after test block D is statically placed in normal temperature air 24 as a child.
Embodiment 3
Pretreatment：Metakaolin crosses 80 mesh screens, concrete test block watering moistening.
It is dry-mixed：25 parts of zinc sulphide is weighed, 25.8 parts of metakaolin pours into container, is placed in batch mixer and stirs 10 minutes, mixes
Conjunction uniformly obtains dry mixing material A.
Wet mixing：It weighs 43 parts of waterglass and 3.2 parts of sodium hydroxide is placed in batch mixer, be sufficiently mixed and uniformly obtain mixture
B.After machine mixing 3 minutes, continuation is stirred on one side, and dry mixing material A and 3 parts of water are poured into together in mixture B again on one side, continue to mix
It closes 2 minutes, forms coating C
Coating：Preprepared concrete test block is sprinkled water and is moistened, coating C is picked with rotary broom, is evenly applied to mix
Solidifying soil surface, forms test block D.
Maintenance：Coagulation forming after test block D is statically placed in normal temperature air 24 as a child.
In order to verify the effect of coating and painting method of the invention, open circuit potential test is carried out and photo-catalyst is real
It tests.The test result of concrete block prepared by above-described embodiment 1-3 is essentially identical, for brevity, below with embodiment 3
For be illustrated.Its specific method and result are as follows：
1) open circuit potential is tested
Two experimental groups, every group two parallel concrete test blocks (40*40*40mm) are taken respectively.First group is used as blank pair
According to group, two test blocks do not coat coating of the present invention (UC-01/02).Second group is used as experimental group, two test blocks uniformly to coat this
The photocatalysis anticorrosive paint (C-01/02) of invention.Each test block is placed individually into four seal cups, and pours into 400ml with thin
The sewage of bacterium (T- sulfur oxidizing bacteriums, bite silicon bacterium at Thiobacillus X), is used in combination fluorescent lamp to be irradiated.Test block, electricity consumption are taken out in timing daily
Chem workstation does open circuit potential test.Test results are shown in figure 1.
It is well known that corrosion potential is higher, it is less susceptible to corrode.Starting stage in being soaked in sewage, corrosion potential
Fluctuation is very big, and corrosion potential is often carried out towards the direction (direction corroded) that numerical value becomes smaller.As soaking time is got over
It more grows, the fluctuation of corrosion potential is smaller and smaller, final corrosion potential is intended to a stable numerical value.
By Fig. 1 it can be found that two concrete samples (C-01/02) of the photocatalysis anticorrosive paint coated with the present invention are rotten
Potential region is lost between-300-- 470mV, hence it is evident that higher than two coagulations of the photocatalysis anticorrosive paint without the coating present invention
Native test specimen (UC-01/02) corrosion potential-670-- 800mV.So the photocatalysis anticorrosive paint of the present invention can be by inhibiting thin
The growth of bacterium, hence it is evident that the corrosion potential for improving concrete component, to slow down biological sulfuric acid to concrete structure erosion and destruction.
2) photo-catalyst is tested
Preparing experiment test block：Concrete test block (40*40*5mm) is divided into two groups, and blank group concrete test block, which is not done, to be located
Coating of the present invention is smeared on reason, experimental group concrete test block surface (40*40mm).
Experiment is taken to be positioned in culture dish with test block, 40*40mm's is face-up, the good battalion with bacterium colony of configured in advance
Nutrient solution is poured into test block, is irradiated on the liquid with bacterium colony using ultraviolet light, after a period of time, takes a certain amount of band bacterium colony liquid
Body drippage is counted under the microscope in aseptic flat board.Judge the power of coating sterilizing ability with the numbers of colony counts.
Colony counts are fewer, then it is stronger to represent sterilizing ability.
Supplementary explanation：1, (since ultraviolet light itself has very strong bactericidal effect, if stronger ultraviolet using energy
Lamp, can cover the photo-catalyst effect of coating test piece of the present invention, therefore the medium excitation wavelength 365nm of this experiment selection, medium
The ultraviolet light of power 20W is as photocatalysis excitation light source) 2, since bacterium colony number of species are numerous, this experimental selection causes biology
Three kinds of bacteriums of sulfuric acid corrosion are as experimental bacteria：T- sulfur oxidizing bacteriums, bite silicon bacterium at Thiobacillus X.
1 T- sulfur oxidizing bacterium culture solutions of table are tested
2 Thiobacillus X culture solutions of table are tested
Table 3 bites the experiment of silicon bacteria culture fluid
Note：Unit cfu/ml：Refer to the bacterial community contained in every milliliter of sample sum
As seen from the above table after the irradiation of 35 minutes ultraviolet lights, the viable bacteria bacterium amount in four kinds of coating test blocks is reduced respectively
To 0.44,0.62,0.56, the 24.2% of only former viable bacteria bacterium amount, 33.3%, 30.3%.However uncoated examination as a contrast
Viable bacteria bacterium amount on block remains within 1.8-1.9.Illustrate that coating specimens can efficiently kill flora.
Above-mentioned embodiment is only a preferred solution of the present invention, so it is not intended to limiting the invention.Have
The those of ordinary skill for closing technical field can also make various changes without departing from the spirit and scope of the present invention
Change and modification.Therefore all technical solutions for taking the mode of equivalent substitution or equivalent transformation to be obtained all fall within the guarantor of the present invention
It protects in range.
Claims (5)
1. a kind of antibacterial coating of photocatalysis, which is characterized in that raw material is by zinc sulphide 20-30 mass parts, metakaolin 20-30 mass
Part, waterglass 40-50 mass parts and sodium hydroxide 2-5 mass parts composition.
2. a kind of concrete photocatalysis bacteriostasis method, which is characterized in that steps are as follows：
By the zinc sulphide of 20-30 mass parts and the stirring of the metakaolin of 20-30 mass parts, dry mixing material A is obtained after mixing；
The sodium hydroxide of the waterglass of 40-50 mass parts and 2-5 mass parts is sufficiently mixed and uniformly obtains mixture B, and machinery
Mix then proceedes to stir on one side, and the water of above-mentioned dry mixing material A and 1-3 mass parts is poured into together in mixture B again on one side, after
Continuous mix, forms coating C；
Coating C is picked, designed concrete block surface is evenly applied to and conserves molding.
3. concrete photocatalysis bacteriostasis method as claimed in claim 2, it is characterised in that the designed concrete block is applying
Cover moistening of sprinkling water before coating.
4. concrete photocatalysis bacteriostasis method as claimed in claim 2, which is characterized in that the advance mistake of the metakaolin 80
Mesh screen.
5. concrete photocatalysis bacteriostasis method as claimed in claim 2, which is characterized in that the maintenance molding is specially will
Concrete block after coating is statically placed in coagulation forming in normal temperature air.
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2779751B1 (en) * | 1998-06-10 | 2003-11-14 | Saint Gobain Isover | SUBSTRATE WITH PHOTOCATALYTIC COATING |
| US8512468B2 (en) * | 2010-12-20 | 2013-08-20 | Louisiana Tech University Research Foundation, A Division Of Louisiana Tech University Foundation, Inc. | Geopolymer mortar and method |
| WO2013018111A1 (en) * | 2011-08-02 | 2013-02-07 | C.I.M. CALCI IDRATE MARCELLINA SpA | Self-cleaning, anti-smog, anti-mould photocatalytic powdered water based paint |
| CN104649626A (en) * | 2013-11-22 | 2015-05-27 | 吕孟龙 | Highly dense alkali-activated coating material |
| CN104529300A (en) * | 2014-12-23 | 2015-04-22 | 广西启利新材料科技股份有限公司 | Geopolymer-base sea-base concrete protective coating |
| CN105601326B (en) * | 2015-12-28 | 2019-01-01 | 江苏苏博特新材料股份有限公司 | A kind of underground sewage concrete duct inorganic anti-corrosion paint and preparation method thereof |
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