CN114574015B - Antibacterial algae-attached coating for concrete - Google Patents
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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- C09D1/02—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates
- C09D1/04—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates with organic additives
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- C09D131/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid; Coating compositions based on derivatives of such polymers
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- C09D131/04—Homopolymers or copolymers of vinyl acetate
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
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Abstract
The invention relates to an antibacterial algae-attached coating for concrete. The antibacterial algae-resistant coating for the concrete comprises sodium silicate, potassium silicate, a surfactant, OIT, diuron, polymer emulsion, a defoaming agent, a film forming additive, superfine cement powder, an early strength agent and a water reducing agent. The antibacterial algae coating for the concrete acts on the surface of the concrete in an overspray construction mode, a compact crystal structure is generated on the surface of the concrete, so that a compact nano protection layer is formed, the smoothness is high, the adhesion of mold and algae can be effectively inhibited, and the concrete has the functions of resisting common germ, mold algae, inhibiting drug-resistant bacteria, and being efficient and durable.
Description
Technical Field
The invention relates to an antibacterial algae-attached coating for concrete, and belongs to the technical field of concrete coatings.
Background
Because of the abundant lower organisms in nature, namely algae, moisture can be absorbed from the air and remain in the surrounding space for a long time, thereby causing great harm to coatings of outdoor buildings, underground projects and the like exposed to natural conditions. Although the traditional coating has a certain effect in the aspect of controlling the antibacterial and anti-algae, algae can be attached to a certain extent, and the traditional coating is further improved in order to further solve the problem of the attachment of bacteria and algae.
Disclosure of Invention
First, the technical problem to be solved
In order to solve the problems in the prior art, the invention provides an antibacterial algae-attached coating for concrete.
(II) technical scheme
In order to achieve the above purpose, the main technical scheme adopted by the invention comprises the following steps:
an antibacterial algae-attached coating for concrete comprises sodium silicate, potassium silicate, a surfactant, OIT (2-n-octyl-4-isothiazolin-3-one), diuron, polymer emulsion, a defoaming agent, a film forming additive, superfine cement powder, an early strength agent and a water reducing agent.
The antibacterial algae-attached coating for concrete as described above preferably comprises, by weight, 15 to 20 parts of sodium silicate, 15 to 20 parts of potassium silicate, 1 to 2 parts of surfactant, 0.5 to 1 part of OIT, 0.5 to 1 part of Diuron, 15 to 20 parts of polymer emulsion, 0.2 to 0.5 part of defoamer, 0.5 to 2 parts of film-forming auxiliary agent, 1 to 5 parts of ultrafine cement powder, 1.5 to 5.0 parts of early strength agent and 0.5 to 1.0 part of water reducer.
The antibacterial alga-adhering paint for concrete as described above is preferably used in an amount of 35 to 40 parts by weight of water.
The antibacterial algae-attached coating material for concrete as described above, preferably, the surfactant is sodium stearate (CH 3 (CH 2 ) 16 COONa), the polymer emulsion is polyvinyl acetate, the defoamer is polysiloxane, the film-forming auxiliary agent is propylene glycol butyl ether, the superfine cement powder is powder with the particle size of 100% being less than 30 mu m, the early strength agent is nitrite, and the water reducer is naphthalene sulfonate water reducer. Further, preferably, the nitrite is sodium nitrite and potassium nitrite, and the naphthalene sulfonate water reducer is PNS, NNO, NF, FDN, UNF or MF.
The preparation method of the antibacterial algae-attached coating for concrete, as described above, preferably comprises the steps of: sequentially adding and mixing sodium silicate, potassium silicate, a defoaming agent, a film-forming auxiliary agent, an early strength agent, a water reducing agent, OIT, diuron, sodium stearate, polymer emulsion and superfine cement powder, uniformly mixing, adding 35-40 parts of water, and uniformly stirring to form the coating.
The OIT used in the invention is dissolved in an organic solvent in a liquid state, slightly dissolved in water, has low toxicity and high efficiency, has a mold killing effect, and can achieve an ideal mold preventing effect.
Diuron: the cost is low, the water solubility is low, the anti-mildew function is not provided, the anti-mildew agent inhibits photosynthesis by preventing the formation of ATP and NADH, has the functions of herbicide, photosystem-II inhibitor, environmental pollutant and mitochondrial respiratory chain inhibitor, has the effect of killing crops, and has better anti-algae performance when being combined with OIT. Adding OIT and Diuron according to a certain proportion to form a compound product. Such as per OIT: diuron is 0.5-1.5:1 in weight part, and can effectively prevent the propagation of mould and algae.
(III) beneficial effects
The beneficial effects of the invention are as follows:
the antibacterial algae-attached coating for the concrete provided by the invention acts on the surface of the concrete in a brushing or spraying construction mode to generate a compact crystal structure on the surface of the concrete, so that a compact nano protection layer is formed, the smoothness is high, mold and algae attachment can be effectively inhibited, the concrete has the functions of resisting common bacteria, mold and algae, inhibiting drug-resistant bacteria, and being efficient and durable, and algae removal components are added to further avoid erosion of algae to a concrete base surface.
The antibacterial algae-attached coating for concrete provided by the invention is the simplest and most effective method for realizing no pollution to the environment. The method is economical and convenient, has long-acting effect, can overcome the defects of bad smell, short drug effect, complex operation, large investment and the like of a physicochemical method, and has wide application field.
Drawings
FIG. 1 is a photograph of the surface of each block before and after soaking Chlorella algae solution.
Detailed Description
The invention will be better explained by the following detailed description of the embodiments with reference to the drawings. The superfine cement powder used in the invention is PO 42.5 silicate cement, the fineness of the cement powder is 800 meshes, the cement powder is purchased from Beijing Jingyuan Xingda building materials Co., ltd, and other reagents can be commercially purchased products.
Example 1
An antibacterial algae-attached coating for concrete is prepared from the following raw materials in parts by weight: 20 parts of sodium silicate, 15 parts of potassium silicate, 2 parts of sodium stearate, 1 part of propylene glycol butyl ether, 0.4 part of polysiloxane, 3 parts of sodium nitrite and a water reducer: PNS1 part, polymer emulsion (polyvinyl acetate) 20 parts, ultra-fine cement powder 2 parts, OIT 0.5 parts, diuron1 part.
Preparation of the coating: sequentially adding and mixing sodium silicate, potassium silicate, polysiloxane, propylene glycol butyl ether, nitrite, naphthalene sulfonate water reducer, OIT, diuron, sodium stearate, polymer emulsion and superfine cement powder in sequence, adding 35 parts of water after uniformly mixing, and uniformly stirring to obtain the coating.
And (3) smearing the obtained paint on a concrete test block with the thickness of 100mm multiplied by 100mm, and uniformly covering the surface of the test block with the paint.
The following items were measured according to the methods in GB/T23445-2009 and JG/T26-2002, and the following detection methods were used for the anti-algidity, and the measurement results in other examples were the detection data on day 12.
S1, selecting algae from a water sample
The method adopts a placement microscope method: fixing 1L of water sample with Lugol reagent in a container, naturally settling for 24h, sucking supernatant by using a siphoning method, concentrating to 30-50 mL, placing 1mL into a blood cell counting plate, and performing microscopic examination and counting under a normal microscope to select a large number of algae as target algae. After detection, it is determined to culture the target algae of chlorella.
S2, culturing selected algae
The method comprises the following steps: inoculating algae in BG-11 culture solution with OD 0.05 at 730nm in triangular flask for culturing, shaking gently at 70rpm, and using 4100K fluorescent tube as light source with illumination intensity of 35 μmol.m -2 .s -1 (about 2000 lux) photoperiod 10L:14D, the culture temperature is 25+ -1deg.C. Culturing experimental algae to logarithmic phase, centrifuging at 4000rpm, and suspending in 1/3BG-11 culture solution until cell density is 10 6 /ml for use.
S3, placing the concrete into the algae soaking solution for soaking
The method comprises the following steps: taking an original concrete test block (control) and a test block (test article) coated with the antibacterial algae coating, wherein the test blocks are 100mm multiplied by 100mm, respectively standing in a square plastic box, soaking the square plastic box in the algae liquid cultured in the step S2, and immersing half of the test blocks in the algae liquid, namely, immersing the test blocks at a height of 5cm. The illumination and temperature conditions are the same as the algae cultivation, and the uniformity is ensured by stirring twice a day.
S4, observing the breeding condition of bacteria and algae
The growth condition of algae on the surface of the test block is measured every other day, the growth condition is scanned and recorded or photographed through a chlorophyll fluorescence imager, the test block is taken out from algae liquid and is kept stand on a square culture dish for 1.5 hours to dry the surface, the excitation wavelength is scanned from 620nm, and chlorophyll fluorescence values are measured at the soaked line and the immersed part of the test block at the emission wavelength of 695nm to 770 nm. The results of the characterization measurements performed using a chlorophyll fluorescence imager on raw concrete blocks without any treatment are shown in the following table. The photographing result is shown in fig. 1, and the fluorescence intensity of the total chlorophyll of the algae solution soaked in the concrete test block is measured to characterize the growth condition of the algae solution. In the experimental process, when the algae liquid is cultured to the 6 th day, the algae liquid is obviously dead, and the algae liquid is replaced by a new algae liquid for soaking culture, so that the detection fluorescence value is increased and then decreased; the experiment was stopped after 12 days of measurement.
Chlorella chlorophyll fluorescence relative value on concrete test block surface
For verifying the performance of the antibacterial algae coating, comparing the fluorescent relative fluorescent value of chlorella chlorophyll on the surface of the immersed part of the raw concrete test block (namely blank control) without the antibacterial algae coating with the fluorescent relative fluorescent value of chlorella chlorophyll on the surface of the concrete test block without the antibacterial algae coating, if the fluorescent value of the concrete test block with the antibacterial algae coating is less than 50% -60% of the fluorescent value of the raw concrete test block without the antibacterial algae coating, the antibacterial algae coating has better antibacterial algae performance, and if the fluorescent value of the concrete test block with the antibacterial algae coating is not much different from the fluorescent value of the raw concrete test block without the antibacterial algae coating, the antibacterial algae coating has poor or worse antibacterial algae performance.
The coating obtained in this example 1 was uniformly applied to a concrete block of 100mm×100mm, and the measurement results of the detection are specifically shown in table 1, wherein the antibacterial algiability is a fluorescence value obtained by measuring the immersed portion on the twelfth day.
TABLE 1
| Project | Unit (B) | Numerical value |
| Tensile Strength | MPa | 2.1 |
| Elongation at break | ％ | 90 |
| Bond strength | MPa | 0.9 |
| Barrier properties | MPa | 0.8 |
| Antibacterial algidity | / | 474 |
Example 2
An antibacterial algae-attached coating for concrete is prepared from the following raw materials in parts by weight: 20 parts of sodium silicate, 15 parts of potassium silicate, 2 parts of sodium stearate, 1 part of propylene glycol butyl ether, 0.4 part of polysiloxane, 3 parts of sodium nitrite and a water reducer naphthalene sulfonate water reducer: PNS1 part, polyvinyl acetate 20 parts, ultra-fine cement powder 2 parts, OIT1 part, diuron0.5 part.
Preparation of the coating: sequentially adding and mixing sodium silicate, potassium silicate, polysiloxane, propylene glycol butyl ether, sodium nitrite, naphthalene sulfonate water reducer, OIT, diuron, sodium stearate, polyvinyl acetate and superfine cement powder, uniformly mixing, adding 35 parts of water, and uniformly stirring to obtain the coating.
The paint obtained above was uniformly applied to a concrete block of 100mm×100 mm.
The detection method is the same as in example 1, and the measurement results are shown in Table 2.
TABLE 2
| Project | Unit (B) | Numerical value |
| Tensile Strength | MPa | 2.1 |
| Elongation at break | ％ | 90 |
| Bond strength | MPa | 0.9 |
| Barrier properties | MPa | 0.8 |
| Antibacterial algidity | / | 497 |
Example 3
An antibacterial algae-attached coating for concrete is prepared from the following raw materials in parts by weight: 20 parts of sodium silicate, 15 parts of potassium silicate, 2 parts of sodium stearate, 1 part of propylene glycol butyl ether, 0.4 part of polysiloxane, 3 parts of potassium nitrite and a water reducer: PNS1 part, polyvinyl acetate 20 parts, ultra-fine cement powder 2 parts, OIT 0.7 parts, diuron0.7 parts.
Preparation of the coating: the sodium silicate, the potassium silicate, the polysiloxane, the propylene glycol butyl ether, the potassium nitrite, the PNS, the OIT, the Diuron, the sodium stearate, the polyvinyl acetate and the superfine cement powder are added and mixed in sequence. After being evenly mixed, 35 parts of water is added and evenly stirred to obtain the coating.
The paint obtained above was applied to a concrete block of 100mm×100 mm.
The detection method is the same as in example 1, and the measurement result is 3.
TABLE 3 Table 3
Example 4
An antibacterial algae-attached coating for concrete is prepared from the following raw materials in parts by weight: 15 parts of sodium silicate, 20 parts of potassium silicate, 1 part of sodium stearate, 1 part of propylene glycol butyl ether, 0.4 part of polysiloxane, 3 parts of potassium nitrite and a water reducer: PNS1 part, polyvinyl acetate 20 parts, ultra-fine cement powder 2 parts, OIT 0.5 parts, diuron1 part.
Preparation of the coating: sequentially adding and mixing sodium silicate, potassium silicate, polysiloxane, propylene glycol butyl ether, potassium nitrite, PNS, OIT, diuron, sodium stearate, polyvinyl acetate and superfine cement powder; after being evenly mixed, 35 parts of water is added and evenly stirred to obtain the coating.
The paint obtained above was applied to a concrete block of 100mm×100 mm.
The detection method is the same as in example 1, and the measurement result is as 4.
TABLE 4 Table 4
| Project | Unit (B) | Numerical value |
| Tensile Strength | MPa | 2.0 |
| Elongation at break | ％ | 90 |
| Bond strength | MPa | 0.9 |
| Barrier properties | MPa | 0.8 |
| Antibacterial algidity | / | 475 |
Example 5
An antibacterial algae-attached coating for concrete is prepared from the following raw materials in parts by weight: 20 parts of sodium silicate, 20 parts of potassium silicate, 2 parts of sodium stearate, 1 part of propylene glycol butyl ether, 0.4 part of polysiloxane, 3 parts of sodium nitrite and a water reducer: PNS1 part, polyvinyl acetate 20 parts, ultra-fine cement powder 4 parts, OIT 0.5 parts, diuron0.5 parts.
Preparation of the coating: sequentially adding and mixing sodium silicate, potassium silicate, polysiloxane, propylene glycol butyl ether, sodium nitrite, PNS, OIT, diuron, sodium stearate, polyvinyl acetate and superfine cement powder; after being evenly mixed, 40 parts of water is added and evenly stirred to obtain the coating.
The paint obtained above was applied to a concrete block of 100mm×100 mm.
The detection method is the same as in example 1, and the measurement result is 5.
TABLE 5
| Project | Unit (B) | Numerical value |
| Tensile Strength | MPa | 2.0 |
| Elongation at break | ％ | 92 |
| Bond strength | MPa | 0.9 |
| Barrier properties | MPa | 0.8 |
| Antibacterial algidity | / | 535 |
Example 6
An antibacterial algae-attached coating for concrete is prepared from the following raw materials in parts by weight: 20 parts of sodium silicate, 20 parts of potassium silicate, 2 parts of sodium stearate, 1 part of propylene glycol butyl ether, 0.4 part of polysiloxane, 3 parts of potassium nitrite and a water reducer: PNS1 part, polyvinyl acetate 20 parts, ultra-fine cement powder 4 parts, OIT1 part, diuron0.5 part.
Preparation of the coating: sequentially adding and mixing sodium silicate, potassium silicate, polysiloxane, propylene glycol butyl ether, potassium nitrite, PNS, OIT, diuron, sodium stearate, polyvinyl acetate and superfine cement powder; after being evenly mixed, 35 parts of water is added and evenly stirred to obtain the coating.
The paint obtained above was applied to a concrete block of 100mm×100 mm.
The detection method is the same as in example 1, and the measurement result is as 6.
TABLE 6
| Project | Unit (B) | Numerical value |
| Tensile Strength | MPa | 2.1 |
| Elongation at break | ％ | 90 |
| Bond strength | MPa | 0.8 |
| Barrier properties | MPa | 0.8 |
| Antibacterial algidity | / | 516 |
Example 7
An antibacterial algae-attached coating for concrete is prepared from the following raw materials in parts by weight: 15 parts of sodium silicate, 15 parts of potassium silicate, 1 part of sodium stearate, 1.5 parts of propylene glycol butyl ether, 0.5 part of polysiloxane, 3 parts of sodium nitrite and a water reducer: PNS1 part, polyvinyl acetate 20 parts, ultra-fine cement powder 4 parts, OIT 0.5 parts, diuron1 part.
Preparation of the coating: sequentially adding and mixing sodium silicate, potassium silicate, polysiloxane, propylene glycol butyl ether, sodium nitrite, PNS, OIT, diuron, sodium stearate, polyvinyl acetate and superfine cement powder; after being evenly mixed, 40 parts of water is added and evenly stirred to obtain the coating.
The paint obtained above was applied to a concrete block of 100mm×100 mm.
The detection method is the same as in example 1, and the measurement result is 7.
TABLE 7
| Project | Unit (B) | Numerical value |
| Tensile Strength | MPa | 2.0 |
| Elongation at break | ％ | 90 |
| Bond strength | MPa | 0.9 |
| Barrier properties | MPa | 0.8 |
| Antibacterial algidity | / | 484 |
Example 8
An antibacterial algae-attached coating for concrete is prepared from the following raw materials in parts by weight: 20 parts of sodium silicate, 15 parts of potassium silicate, 2 parts of sodium stearate, 1.5 parts of propylene glycol butyl ether, 0.5 part of polysiloxane, 5 parts of sodium nitrite and a water reducer: PNS1 part, polyvinyl acetate 20 parts, ultra-fine cement powder 4 parts, OIT 0.5 parts, diuron1 part.
Preparation of the coating: sequentially adding and mixing sodium silicate, potassium silicate, polysiloxane, propylene glycol butyl ether, sodium nitrite, PNS, OIT, diuron, sodium stearate, polyvinyl acetate and superfine cement powder; after being evenly mixed, 40 parts of water is added and evenly stirred to obtain the coating.
The paint obtained above was applied to a concrete block of 100mm×100 mm.
The detection method is the same as in example 1, and the measurement result is 8.
TABLE 8
| Project | Unit (B) | Numerical value |
| Tensile Strength | MPa | 2.1 |
| Elongation at break | ％ | 90 |
| Bond strength | MPa | 0.9 |
| Barrier properties | MPa | 0.8 |
| Antibacterial algidity | / | 499 |
Example 9
An antibacterial algae-attached coating for concrete is prepared from the following raw materials in parts by weight: 20 parts of sodium silicate, 15 parts of potassium silicate, 2 parts of sodium stearate, 1.5 parts of propylene glycol butyl ether, 0.5 part of polysiloxane, 5 parts of sodium nitrite and a water reducer: PNS1 part, polyvinyl acetate 20 parts, ultra-fine cement powder 4 parts, OIT 0.5 parts, diuron0.7 parts.
Preparation of the coating: sequentially adding and mixing sodium silicate, potassium silicate, polysiloxane, propylene glycol butyl ether, sodium nitrite, PNS, OIT, diuron, sodium stearate, polyvinyl acetate and superfine cement powder; after being evenly mixed, 40 parts of water is added and evenly stirred to obtain the coating.
The paint obtained above was applied to a concrete block of 100mm×100 mm.
The detection method is the same as in example 1, and the measurement result is 9.
TABLE 9
| Project | Unit (B) | Numerical value |
| Tensile Strength | MPa | 2.1 |
| Elongation at break | ％ | 90 |
| Bond strength | MPa | 0.9 |
| Barrier properties | MPa | 0.8 |
| Antibacterial algidity | / | 478 |
Example 10
An antibacterial algae-attached coating for concrete is prepared from the following raw materials in parts by weight: 20 parts of sodium silicate, 20 parts of potassium silicate, 2 parts of sodium stearate, 1.5 parts of propylene glycol butyl ether, 0.5 part of polysiloxane, 5 parts of potassium nitrite and a water reducer: PNS1 part, polyvinyl acetate 20 parts, ultra-fine cement powder 4 parts, OIT 0.7 parts, diuron1 part.
Preparation of the coating: sequentially adding and mixing sodium silicate, potassium silicate, polysiloxane, propylene glycol butyl ether, potassium nitrite, PNS, OIT, diuron, sodium stearate, polyvinyl acetate and superfine cement powder; after being evenly mixed, 40 parts of water is added and evenly stirred to obtain the coating.
The paint obtained above was applied to a concrete block of 100mm×100 mm.
The detection method is the same as in example 1, and the measurement result is 10.
Table 10
Example 11
An antibacterial algae-attached coating for concrete is prepared from the following raw materials in parts by weight: 20 parts of sodium silicate, 15 parts of potassium silicate, 2 parts of sodium stearate, 1.5 parts of propylene glycol butyl ether, 0.5 part of polysiloxane, 5 parts of potassium nitrite and a water reducer: PNS1 part, polyvinyl acetate 20 parts, ultra-fine cement powder 4 parts, OIT 0.7 parts, diuron0.5 parts.
Preparation of the coating: sequentially adding and mixing sodium silicate, potassium silicate, polysiloxane, propylene glycol butyl ether, potassium nitrite, PNS, OIT, diuron, sodium stearate, polyvinyl acetate and superfine cement powder; after being evenly mixed, 40 parts of water is added and evenly stirred to obtain the coating.
The paint obtained above was applied to a concrete block of 100mm×100 mm.
The detection method is the same as in example 1, and the measurement result is as 4.
TABLE 4 Table 4
| Project | Unit (B) | Numerical value |
| Tensile Strength | MPa | 2.1 |
| Elongation at break | ％ | 90 |
| Bond strength | MPa | 1.0 |
| Barrier properties | MPa | 0.8 |
| Antibacterial algidity | / | 432 |
Comparative example 1
The following raw materials are prepared according to parts by weight: 20 parts of sodium silicate, 15 parts of potassium silicate, 2 parts of sodium stearate, 1 part of propylene glycol butyl ether, 0.4 part of polysiloxane, 3 parts of sodium nitrite and a water reducer: PNS1 part, polyvinyl acetate 20 parts, superfine cement powder 2 parts, and water 35 parts.
Preparation of the coating: sequentially adding and mixing sodium silicate, potassium silicate, polysiloxane, propylene glycol butyl ether, sodium nitrite, naphthalene sulfonate water reducer, sodium stearate, polymer emulsion and superfine cement powder, uniformly mixing, adding 35 parts of water, and uniformly stirring to obtain the coating.
The paint obtained above was applied to a concrete block of 100mm×100mm, and the measurement results are shown in table 12, as in the measurement method of example 1.
Table 12
| Project | Unit (B) | Numerical value |
| Tensile Strength | MPa | 2.1 |
| Elongation at break | ％ | 90 |
| Bond strength | MPa | 0.9 |
| Barrier properties | MPa | 0.8 |
| Antibacterial algidity | / | 972 |
From the results, the antibacterial and anti-algae performances of the antibacterial algae coating provided by the invention are obviously improved compared with the comparative examples, and the anti-algae performances are superior.
The results show that the antibacterial algae coating prepared by the invention has better antibacterial algae performance.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any person skilled in the art may make modifications or alterations to the above disclosed technical content to equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (3)
1. The antibacterial algae-attached coating for the concrete is characterized by comprising, by weight, 20 parts of sodium silicate, 15 parts of potassium silicate, 2 parts of a surfactant, 0.7 part of OIT, 0.7 part of Diuron, 20 parts of a polymer emulsion, 0.4 part of a defoaming agent, 1 part of a film-forming auxiliary agent, 2 parts of superfine cement powder, 3 parts of an early strength agent and 1.0 part of a water reducer;
the surfactant is sodium stearate, the polymer emulsion is polyvinyl acetate, the defoamer is polysiloxane, the film-forming auxiliary agent is propylene glycol butyl ether, the early strength agent is nitrite, and the water reducer is naphthalene sulfonate water reducer;
the nitrite is potassium nitrite, and the naphthalene sulfonate water reducer is PNS.
2. The antibacterial algae-attached coating for concrete according to claim 1, wherein the amount of water added at the time of use is 35 to 40 parts.
3. The method for preparing the antibacterial algae-attached coating for concrete according to claim 1 or 2, wherein,
the raw materials are mixed according to the following proportion: sequentially adding and mixing sodium silicate, potassium silicate, a defoaming agent, a film-forming auxiliary agent, an early strength agent, a water reducing agent, OIT, diuron, sodium stearate, polymer emulsion and superfine cement powder, uniformly mixing, adding 35-40 parts of water, and uniformly stirring to form the coating.
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| CN103601442B (en) * | 2013-10-31 | 2015-07-15 | 德高（广州）建材有限公司 | Waterproof slurry with sterilization function for toilet bath room decoration surfaces |
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