CN106220122A - A kind of antibacterial coating of photocatalysis and method thereof - Google Patents
A kind of antibacterial coating of photocatalysis and method thereof Download PDFInfo
- Publication number
- CN106220122A CN106220122A CN201610533674.7A CN201610533674A CN106220122A CN 106220122 A CN106220122 A CN 106220122A CN 201610533674 A CN201610533674 A CN 201610533674A CN 106220122 A CN106220122 A CN 106220122A
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- mass parts
- coating
- concrete
- photocatalysis
- metakaolin
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Classifications
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- 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
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- 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 method thereof.With metakaolin, waterglass, sodium hydroxide is matrix material, and zinc sulfide is photo-catalyst material, mixes with water, is uniformly mixing to obtain sterilization and anticorrosion coating.The advantages such as it is extensive that the present invention has raw material sources, and cost is relatively low, and technique is simple, bactericidal property efficient stable.
Description
Technical field
The invention belongs to the inorganic coating field for concrete structural surface, particularly relate to a kind of antibacterial coating of photocatalysis
And method.
Background technology
Entering 21 century, China has marched toward the epoch of coastal economy great development, it is anticipated that in following one period
Large quantities of sea port dock, Oversea bridge, tunnel, offshore production platform etc. will be had to use xoncrete structure.The concrete knot in Lang Jian district
Structure owing to standing the beating repeatedly of wind, Exposure to Sunlight and wave for a long time, the top layer of xoncrete structure easily accumulate substantial amounts of bacterium colony and
Microorganism.The most effectively stop these bacterium colonies and the microorganism corrosion failure to xoncrete structure, the most gradually cause vast section
Grind the attention of worker, and one of become the emphasis of academia research.Therefore, development and utilization new material, new technique solve mixed
The etching problem of Xtah Crude Clay structure is one of the most urgent task of facing of current field of civil engineering scientific worker.
In terms of biological corrosion, T-sulfur oxidizing bacterium, Thiobacillus X, to bite the biological sulfuric acid corrosion that silicon bacterium causes be one of which
Common concrete erosion, its detailed process is: the organic and mineral suspensions in environment water along with water body flowing and by
The surface being gradually deposited on xoncrete structure becomes attachment, and the sulfate ion in attachment is reduced by sulfur reducing bacteria, generates sulfur
Change hydrogen.Meanwhile, hydrogen sulfide gas is by complicated biochemical reaction, and oxidation generates acid stronger sulphuric acid, thus drops
The pH value of low surrounding.The hydrion of sulfuric acid dissolution release is by diffusing into the inside of concrete, and and inside concrete
Bar construction contact, thus there is the corrosion of concrete and reinforcing bar, the safety of concrete building structures in serious threat.Mesh
Front conventional sterilization material is nano titanium oxide, and owing to nano titanium oxide can be carried out " light-catalyzed reaction ", it is by light
After exciting, produce chemical energy, utilize the chemical energy produced to carry out redox reaction.Light-catalysed ultimate principle is to utilize to receive
Rice titanium dioxide is as catalysis material, under the light radiation of specific wavelength, produces oxidisability pole on nano titanium oxide surface
Strong hole or reactive high hydroxyl radical free radical.These holes or free radical can effectively with organic pollution, virus,
Antibacterial comes in contact and is combined and produces strong destruction, causes organic pollution to be degraded, and virus is killed with antibacterial,
Thus reach environmental contaminants of degrading, bactericidal and antiseptical purpose.But nano titanium oxide be limited by its preparation technology and
The impact of production capacity and the potential hazard to human body, it would be highly desirable to develop a kind of novel substitute products, be applied to be unsuitable for using
In the antiseptic concrete technique of nano titanium oxide.
It addition, current prior art has existed many reinforced concrete block method of inhibiting corrosion.Such as Application No.
The patent of invention of 201310232855.2 discloses a kind of anticorrosion building concrete, including cement and admixture, also has anti-
Rotten agent and dispersant.The anticorrosion building concrete of this invention is by making isobutyl triethoxy silane penetrate in concrete
Hydrone generation chemical reaction in portion, with the air being exposed in acidity or alkaline environment and substrate, is formed and scolds water to process layer,
Thus suppress moisture to enter in substrate.It must be when preparing concrete mortar, will preservative and dispersant addition raw material
In, and cannot use in type concrete block.The patent of invention of Application No. 201510550106.3 discloses one
Modified propylene acid coated antiseptic concrete method, comprises the steps: coating test；Scaffold building；The cleaning of concrete；Mixed
The polishing of solidifying soil；The repairing of concrete is levelling；Brushing acrylic resin seal coat；Brushing acrylic resin finish paint；Maintenance.Should
Inventive nature is by acrylic resin seal coat and finish paint, forms strong protective barrier together, resistance at concrete surface
Dash and carbon dioxide enter concrete block.But the method can not it acts on to long period of soaking concrete block in water, because of
Antibacterial for its surface still cannot be killed, and is easily accessible inside and reinforcing bar is caused erosion.
Summary of the invention
It is an object of the invention to solve problems of the prior art, and provide a kind of antibacterial coating of photocatalysis and
Method, the sterilization and anticorrosion requirement brought in sea water to meet concrete to be soaked in for a long time.Concrete technology of the present invention
Scheme is as follows:
The antibacterial coating of photocatalysis, raw material comprises: zinc sulfide 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, step is as follows:
Dry mixing material A is obtained after the metakaolin stirring of the zinc sulfide 20-30 mass parts of 20-30 mass parts, mix homogeneously；
The waterglass of 40-50 mass parts and the sodium hydroxide of 2-5 mass parts are sufficiently mixed and uniformly obtain mixture B, and
Machine mixing, then proceedes to stir, and pours mixture B into more on one side together with the water of above-mentioned dry mixing material A and 1-3 mass parts
In, continue mix, form coating C；
Pick coating C, be evenly applied to designed concrete block surface maintenance molding.
As preferably, the watering before coating coating of described designed concrete block is moistening.
As preferably, described metakaolin crosses 80 eye mesh screens in advance.
As preferably, described maintenance molding is specially to be statically placed in normal temperature air the concrete block after coating and is frozen into
Type.
The photocatalysis anticorrosive paint of the present invention, zinc sulfide, can be bright by suppressing the growth of antibacterial as catalysis material
The aobvious corrosion potential improving concrete component, thus slow down biological sulphuric acid to concrete structure erosion and destruction.In the present invention
Metakaolin, waterglass and sodium hydroxide, as binding agent, have cooperative effect with zinc sulfide, further inhibit antibacterial
Growth.The advantages such as it is extensive that the present invention has raw material sources, and cost is relatively low, and technique is simple, bactericidal property efficient stable.The present invention fits
Share in the sterilization and anticorrosion of long period of soaking marine concrete structure in sea water.
Accompanying drawing explanation
Fig. 1 is that the corrosion potential of the embodiment of the present invention 3 empty matched group and experimental group changes over figure.
Detailed description of the invention
With detailed description of the invention the present invention it is further elaborated below in conjunction with the accompanying drawings and illustrates.In the present invention, each is implemented
The technical characteristic of mode, on the premise of not colliding with each other, all can carry out respective combination.
The antibacterial coating of photocatalysis, raw material comprises: zinc sulfide 20-30 mass parts, metakaolin 20-30 mass parts, waterglass
40-50 mass parts and sodium hydroxide 2-5 mass parts.Above-mentioned coating is for the method for concrete sterilization and anticorrosion, and step is as follows:
Pretreatment: metakaolin crosses 80 eye mesh screens, and concrete test block watering is moistening.
Being dry mixed: the zinc sulfide that will weigh in said components ratio, metakaolin pours container into, is placed in batch mixer stirring 10
Minute, mix homogeneously obtains dry mixing material A.
Wet mixing: the waterglass and the sodium hydroxide that weigh in said components ratio are placed in batch mixer, is sufficiently mixed uniformly
Obtain mixture B.After machine mixing 3 minutes, continue stirring, again dry mixing material A is poured into mixed together with (1-3) part water on one side
In compound B, continue mix 2 minutes, form coating C
Coating: moistening for the watering of preprepared concrete test block, pick coating C with rotary broom, be evenly applied to mix
Solidifying soil surface, forms test block D.
Maintenance: test block D be statically placed in normal temperature air 24 as a child after coagulation forming.
Following embodiment 1-3 is respectively the preparation of fungicidal paint:
Embodiment 1
Pretreatment: metakaolin crosses 80 eye mesh screens, and concrete test block watering is moistening.
Being dry mixed: weigh 23 parts of zinc sulfide, metakaolin 27 parts pours container into, is placed in batch mixer stirring 10 minutes, mixing
Uniformly obtain dry mixing material A.
Wet mixing: weigh waterglass 44.6 parts and sodium hydroxide 3.4 parts is placed in batch mixer, be sufficiently mixed and uniformly mixed
Thing B.After machine mixing 3 minutes, continue stirring, again dry mixing material A is poured in mixture B together with 2 parts of water on one side, continue
Mix 2 minutes, forms coating C
Coating: moistening for the watering of preprepared concrete test block, pick coating C with rotary broom, be evenly applied to mix
Solidifying soil surface, forms test block D.
Maintenance: test block D be statically placed in normal temperature air 24 as a child after coagulation forming.
Embodiment 2
Pretreatment: metakaolin crosses 80 eye mesh screens, and concrete test block watering is moistening.
Being dry mixed: weigh 21.5 parts of zinc sulfide, metakaolin 27.5 parts pours container into, is placed in batch mixer stirring 10 minutes,
Mix homogeneously obtains dry mixing material A.
Wet mixing: weigh waterglass 46 parts and sodium hydroxide 3.5 parts is placed in batch mixer, be sufficiently mixed and uniformly obtain mixture
B.After machine mixing 3 minutes, continue stirring, again dry mixing material A is poured in mixture B together with 1.5 parts of water on one side, continue
Mix 2 minutes, forms coating C
Coating: moistening for the watering of preprepared concrete test block, pick coating C with rotary broom, be evenly applied to mix
Solidifying soil surface, forms test block D.
Maintenance: test block D be statically placed in normal temperature air 24 as a child after coagulation forming.
Embodiment 3
Pretreatment: metakaolin crosses 80 eye mesh screens, and concrete test block watering is moistening.
Being dry mixed: weigh 25 parts of zinc sulfide, metakaolin 25.8 parts pours container into, is placed in batch mixer stirring 10 minutes, mixed
Close and uniformly obtain dry mixing material A.
Wet mixing: weigh waterglass 43 parts and sodium hydroxide 3.2 parts is placed in batch mixer, be sufficiently mixed and uniformly obtain mixture
B.After machine mixing 3 minutes, continue stirring, again dry mixing material A is poured in mixture B together with 3 parts of water on one side, continue to mix
Close 2 minutes, form coating C
Coating: moistening for the watering of preprepared concrete test block, pick coating C with rotary broom, be evenly applied to mix
Solidifying soil surface, forms test block D.
Maintenance: test block D be statically placed in normal temperature air 24 as a child after coagulation forming.
The effect of coating and painting method in order to verify the present invention, has carried out OCP test and photo-catalyst is real
Test.The test result of the concrete block prepared by above-described embodiment 1-3 is essentially identical, for brevity, below with embodiment 3
As a example by be illustrated.Its concrete grammar and result are as follows:
1) OCP test
Take two experimental grouies, often two parallel concrete test blocks (40*40*40mm) of group respectively.First group right as blank
According to group, two test blocks do not coat coating of the present invention (UC-01/02).Second group as experimental group, two test blocks uniformly coat this
The photocatalysis anticorrosive paint (C-01/02) of invention.Each test block is placed individually in four seal cups, and pours 400ml into carefully
The sewage of bacterium (T-sulfur oxidizing bacterium, Thiobacillus X, bite silicon bacterium), and be irradiated with daylight lamp.Every day, test block, electricity consumption were taken out in timing
Chem workstation does OCP test.Test result is as shown in Figure 1.
It is known that corrosion potential is the highest, it is less susceptible to corrosion.Starting stage in being soaked in sewage, corrosion potential
Fluctuation is very big, and corrosion potential is often carried out towards the direction (direction i.e. corroded) that numerical value diminishes.Along with soak time is got over
The longest, the fluctuation of corrosion potential is more and more less, and final corrosion potential trends towards a stable numerical value.
By Fig. 1 it is found that two concrete samples (C-01/02) being coated with the photocatalysis anticorrosive paint of the present invention are rotten
Erosion potential region is between-300-470mV, hence it is evident that higher than two coagulations of the photocatalysis anticorrosive paint not coating the present invention
Soil test specimen (UC-01/02) corrosion potential-670-800mV.So the photocatalysis anticorrosive paint of the present invention can be thin by suppression
The growth of bacterium, hence it is evident that improve the corrosion potential of concrete component, thus slow down biological sulphuric acid to concrete structure erosion and destruction.
2) photo-catalyst experiment
Preparing experiment test block: concrete test block (40*40*5mm) is divided into two groups, blank group concrete test block does not do to be located
Reason, coating of the present invention is smeared on experimental group concrete test block surface (40*40mm).
Treating excess syndrome is tested and is positioned in culture dish with test block, and 40*40mm faces up, the battalion with bacterium colony good for configured in advance
Nutrient solution is poured in test block, uses ultraviolet light to be irradiated on the liquid with bacterium colony, after a while, takes a certain amount of band bacterium colony liquid
Body drips on aseptic flat board, and counts under the microscope.Number with colony counts judges the power of coating sterilizing ability.
Colony counts is the fewest, then represent sterilizing ability the strongest.
Supplementary notes: 1, (inherently have the strongest bactericidal action due to ultraviolet, if using the ultraviolet that energy is stronger
Lamp, can cover the photo-catalyst effect of coating test piece of the present invention, and therefore medium excitation wavelength 365nm, medium is selected in this experiment
The ultraviolet light of power 20W is as photocatalysis excitation source) 2, due to bacterium colony kind large number of, this experimental selection causes biology
Three kinds of antibacterials of sulfuric acid corrosion are as experimental bacteria: T-sulfur oxidizing bacterium, Thiobacillus X, bite silicon bacterium.
Table 1 T-sulfur oxidizing bacterium culture fluid is tested
Table 2 Thiobacillus X culture fluid is tested
The test of silicon bacteria culture fluid bitten by table 3
Note: unit cfu/ml: refer to the bacterial community sum contained in every milliliter of sample
As seen from the above table after the ultraviolet irradiation of 35 minutes, the viable bacteria bacterium amount in four kinds of coating test blocks reduces respectively
To 0.44,0.62,0.56, the 24.2% of the most former viable bacteria bacterium amount, 33.3%, 30.3%.But trying without coating as comparison
Viable bacteria bacterium amount on block remains within 1.8-1.9.Illustrate that coating specimens can kill flora efficiently.
Embodiment described above is the one preferably scheme of the present invention, and so it is not intended to limiting the invention.Have
Close the those of ordinary skill of technical field, without departing from the spirit and scope of the present invention, it is also possible to make various change
Change and modification.The technical scheme that the most all modes taking equivalent or equivalent transformation are obtained, all falls within the guarantor of the present invention
In the range of protecting.
Claims (6)
1. the antibacterial coating of photocatalysis, it is characterised in that raw material comprises: zinc sulfide 20-30 mass parts, metakaolin 20-30
Mass parts, waterglass 40-50 mass parts and sodium hydroxide 2-5 mass parts.
2. a concrete photocatalysis bacteriostasis method, it is characterised in that step is as follows:
Dry mixing material A is obtained after the metakaolin stirring of the zinc sulfide of 20-30 mass parts and 20-30 mass parts, mix homogeneously；
The waterglass of 40-50 mass parts and the sodium hydroxide of 2-5 mass parts are sufficiently mixed and uniformly obtain mixture B, and machinery
Mix, then proceedes to stir, and pours in mixture B more on one side, continue together with the water of above-mentioned dry mixing material A and 1-3 mass parts
Continuous mix, forms coating C；
Pick coating C, be evenly applied to designed concrete block surface maintenance molding.
3. concrete photocatalysis bacteriostasis method as claimed in claim 2, it is characterised in that described designed concrete block is being coated with
Before covering coating, watering is moistening.
4. concrete photocatalysis bacteriostasis method as claimed in claim 2, it is characterised in that described metakaolin crosses 80 in advance
Eye mesh screen.
5. concrete photocatalysis bacteriostasis method as claimed in claim 2, it is characterised in that described maintenance molding is specially will
Concrete block after coating is statically placed in coagulation forming in normal temperature air.
6. a zinc sulfide is for preparing the purposes of the sterilization and anticorrosion coating of the xoncrete structure that borders on the sea.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610533674.7A CN106220122B (en) | 2016-06-30 | 2016-06-30 | A kind of antibacterial coating of photocatalysis and its method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610533674.7A CN106220122B (en) | 2016-06-30 | 2016-06-30 | A kind of antibacterial coating of photocatalysis and its method |
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| CN106220122A true CN106220122A (en) | 2016-12-14 |
| CN106220122B CN106220122B (en) | 2018-07-17 |
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Citations (6)
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|---|---|---|---|---|
| CN1312779A (en) * | 1998-06-10 | 2001-09-12 | 圣戈班研究公司 | Substrute with a photocatalytic coating |
| CN103269993A (en) * | 2010-12-20 | 2013-08-28 | 路易斯安那理工大学研究基金会,路易斯安那理工大学基金会分公司 | Geopolymer mortar and method |
| CN103946180A (en) * | 2011-08-02 | 2014-07-23 | C.I.M.钙尔西艾德瑞特马尔切利纳(股份)责任有限公司 | Self-cleaning, anti-smog, anti-mould photocatalytic powdered water based paint |
| 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 |
| CN104649626A (en) * | 2013-11-22 | 2015-05-27 | 吕孟龙 | Highly dense alkali-activated coating material |
| CN105601326A (en) * | 2015-12-28 | 2016-05-25 | 江苏苏博特新材料股份有限公司 | Inorganic anti-corrosive paint for underground sewage concrete pipeline, and preparation method of inorganic anti-corrosive paint |
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2016
- 2016-06-30 CN CN201610533674.7A patent/CN106220122B/en active Active
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|---|---|---|---|---|
| CN1312779A (en) * | 1998-06-10 | 2001-09-12 | 圣戈班研究公司 | Substrute with a photocatalytic coating |
| CN103269993A (en) * | 2010-12-20 | 2013-08-28 | 路易斯安那理工大学研究基金会,路易斯安那理工大学基金会分公司 | Geopolymer mortar and method |
| CN103946180A (en) * | 2011-08-02 | 2014-07-23 | C.I.M.钙尔西艾德瑞特马尔切利纳(股份)责任有限公司 | 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 |
| CN105601326A (en) * | 2015-12-28 | 2016-05-25 | 江苏苏博特新材料股份有限公司 | Inorganic anti-corrosive paint for underground sewage concrete pipeline, and preparation method of inorganic anti-corrosive paint |
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| Title |
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| 陈宇轩 等: "LDHs改性偏高岭土基地聚物涂料对混凝土耐久性的研究影响", 《硅酸盐通报》 * |
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| CN106220122B (en) | 2018-07-17 |
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