CN110946149B - Bactericidal and algae-killing synergistic composition for paint, coating, water body and wood and application thereof - Google Patents
Bactericidal and algae-killing synergistic composition for paint, coating, water body and wood and application thereof Download PDFInfo
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- CN110946149B CN110946149B CN201911248242.1A CN201911248242A CN110946149B CN 110946149 B CN110946149 B CN 110946149B CN 201911248242 A CN201911248242 A CN 201911248242A CN 110946149 B CN110946149 B CN 110946149B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/40—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having a double or triple bond to nitrogen, e.g. cyanates, cyanamides
- A01N47/48—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having a double or triple bond to nitrogen, e.g. cyanates, cyanamides containing —S—C≡N groups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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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
- 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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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/20—Prevention of biofouling
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Environmental Sciences (AREA)
- Zoology (AREA)
- General Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Forests & Forestry (AREA)
- Water Supply & Treatment (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a sterilization and algae-killing synergistic composition for paint, coating, water and wood. The composition is prepared by combining dithiocyano-methane and nano-silver, wherein the weight ratio of the dithiocyano-methane to the nano-silver is 0.5-8: 1. The composition has high-efficiency bactericidal and algicidal effects, can prevent the paint and the coating from mildewing and growing algae when being added into the paint and the coating, can prevent wood from rotting when being treated, can kill microorganisms and algae when being treated with water, and has low cost and long lasting period.
Description
The technical field is as follows:
the invention relates to a sterilization and algae-killing synergistic composition for paint, coating, water and wood, belonging to the technical field of pesticides. The invention further relates to the use of the inventive composition for bactericidal and algicidal applications in paints, coatings, water bodies and wood.
Background art:
the pollution of water body causes algae outbreak, the water body bacteria in the pipeline breed to cause sludge expansion, and the pipeline is blocked
In a humid environment, wall coatings often exhibit mildew.
The ship hull grows algae and bacteria, the service life of the ship hull is influenced, and the growth of algae and bacteria can be effectively prevented by adding the biocide into the paint of the ship hull.
The dithiocyano methane is a spectral medicament for killing bacteria, fungi and algae, and is environment-friendly.
The nano silver has the functions of killing algae and sterilizing, and has lasting effect and safety.
The inventor finds that the dithiocyano-methane and the nano-silver are compounded to have very obvious synergistic effect, the killing effect on bacteria, fungi and algae is obviously improved, the lasting period is long, and the compound can be used for sterilizing and killing algae in paint, coating, water and wood.
The invention content is as follows:
the invention aims to provide a sterilization and algae-killing composition for paint, coating, water and wood, which contains dithiocyano-methane and nano-silver, can kill bacteria and algae, reduces the using amount and has long lasting period.
The invention relates to a sterilization and algae-killing composition for paint, coating, water and wood, which is characterized in that: contains active components of dithiocyano-methane and nano-silver, wherein the weight mixing ratio of the dithiocyano-methane to the nano-silver is 0.5-8: 1.
The specific implementation mode is as follows:
example 1 synergistic Effect of Dithiocyanomethane in combination with Nanosilver on Microcystis aeruginosa
The algal species tested: microcystis aeruginosa (Microcystis aeruginosa).
And (3) test treatment: according to the results of preliminary experiments, the single treatment concentrations of dithiocyano-methane are set to be 0.5, 2 and 4mg/L, the single treatment concentrations of nano-silver are set to be 0.5 and 1mg/L, and the single treatment concentrations of dithiocyano-methane and nano-silver are set to be 0.5+0.5 (1: 1), 2+0.5 (2: 1), 4+0.5 (8: 1), 0.5+1 (0.5: 1), 2+1 (2: 1) and 4+1 (4: 1) mg/L. A control without medicine is additionally arranged. Each treatment was repeated 4 times.
The test method comprises the following steps: culturing microcystis aeruginosa indoors by using nutrient solution. Adding the treatment agent into the algae culture solution according to the designed treatment dosage.
Data investigation and statistical analysis: measuring the content of chlorophyll of the microcystis aeruginosa after 14 days of treatment, and evaluating the algae killing activity according to the change of the content of chlorophyll of the microcystis aeruginosa. The inhibition was calculated as follows:
inhibition (%) - (content of control chlorophyll-content of treated chlorophyll)/content of control chlorophyll × 100
Theoretical inhibition < E) was calculated as follows:
e (%) (-) dithiocyano methane inhibition rate + (100-dithiocyano methane inhibition rate) (-) nano silver inhibition rate/100
Judgment of the interaction effect of mixture: actual inhibition rate) theoretical inhibition rate, indicating synergistic effect; the actual inhibition rate is the theoretical inhibition rate, and the addition effect is shown; the actual inhibition rate is less than the theoretical inhibition rate, and the antagonism is shown.
Analysis and discussion of results
The dithiocyano-methane is singly used at 0.5, 2 and 4mg/L, and the growth inhibition rates to microcystis aeruginosa are respectively 42 percent, 56 percent and 71 percent; the growth inhibition rate of the microcystis aeruginosa by using the nano-silver alone at 0.5 mg/L and 1mg/L is respectively 38 percent and 53 percent (Table 1).
The actual inhibition rates of the mixed treatment of dithiocyano-methane and nano-silver are respectively 72%, 88%, 91%, 84%, 93% and 95% on the growth of microcystis aeruginosa, wherein the actual inhibition rates of the mixed treatment are respectively 0.5+0.5 (1: 1), 2+0.5 (2: 1), 4+0.5 (8: 1), 0.5+1 (0.5: 1), 2+1 (2: 1) and 4+1 (4: 1) mg/L, and the actual inhibition rates of the six mixed treatment are 8% -14% higher than the theoretical inhibition rate (table 1).
The result shows that the microcystis aeruginosa mixed with the dithiocyano-methane and the nano silver in the ratio of 0.5-8: 1 shows a synergistic effect.
TABLE 1 synergistic effect of dithiocyano methane and nano silver on Microcystis aeruginosa
Example 2: synergistic effect of dithiocyano-methane and nano-silver mixed agent on brown rot fungus
The test wood rotting strain: brown rot fungus (Gloeophyllum trabeum).
And (3) test treatment: according to the results of preliminary experiments, the single treatment concentrations of dithiocyano-methane are set to be 0.5, 2 and 4mg/L, the single treatment concentrations of nano-silver are set to be 0.5 and 1mg/L, and the single treatment concentrations of dithiocyano-methane and nano-silver are set to be 0.5+0.5 (1: 1), 2+0.5 (2: 1), 4+0.5 (8: 1), 0.5+1 (0.5: 1), 2+1 (2: 1) and 4+1 (4: 1) mg/L. A control without medicine is additionally arranged. Each treatment was repeated 4 times.
The bacteriostatic activity test method comprises the following steps: a hypha growth rate method is adopted. Dithiocyanomethane and nanosilver were mixed into potato dextrose agar medium (PDA) at the concentrations designed for the experiments. The culture dish was inoculated with brown rot fungus having a diameter of 8, and the culture dish was cultured in a biochemical incubator at 28 ℃ and a relative humidity of 80% for 14 days. And recording the diameter of the colony.
Data investigation and statistical analysis: the colony diameter is measured 14 days after inoculation, and the activity to the brown rot fungi is evaluated according to the colony diameter. The inhibition was calculated as follows:
inhibition (%) - (control colony diameter-treated colony diameter)/control colony diameter × 100
The theoretical inhibition (E) is calculated as follows:
e (%) (-) dithiocyano methane inhibition rate + (100-dithiocyano methane inhibition rate) (-) nano silver inhibition rate/100
Judgment of the interaction effect of mixture: actual inhibition rate) theoretical inhibition rate, indicating synergistic effect; the actual inhibition rate is the theoretical inhibition rate, and the addition effect is shown; the actual inhibition rate is less than the theoretical inhibition rate, and the antagonism is shown.
Analysis and discussion of results
The dithiocyano-methane is singly used at 0.5, 2 and 4mg/L, and the inhibition rates on the growth of the brown rot fungi are respectively 36 percent, 47 percent and 62 percent; the inhibition rate of nano silver on the growth of brown rot fungi by 0.5 and 1mg/L (table 2) respectively is 21 percent and 32 percent.
The actual inhibition rates of the dithiocyano-methane and the nano-silver on the growth of the brown rot fungi by six mixed treatments of 0.5+0.5 (1: 1), 2+0.5 (2: 1), 4+0.5 (8: 1), 0.5+1 (0.5: 1), 2+1 (2: 1) and 4+1 (4: 1) mg/L are respectively 56%, 67%, 83%, 61%, 73% and 82%, and the actual inhibition rates of the six mixed treatments are 6% -13% higher than the theoretical inhibition rate (Table 2).
The result shows that the brown rot fungus mixed by dithiocyano-methane and nano-silver in the ratio of 0.5-8: 1 shows synergistic effect.
TABLE 2 synergism of dithiocyano-methane and nanosilver in combination on brown rot fungus (Gloeophyllum trabeum)
Example 3: synergistic effect of 80% dithiocyano-methane and nano-silver mixture on activity of Escherichia coli
Test bacterial species: escherichia coli (Escherichia coli)
And (3) test treatment: according to the results of preliminary experiments, the single treatment concentrations of dithiocyano-methane are set to be 0.5, 2 and 4mg/L, the single treatment concentrations of nano-silver are set to be 0.5 and 1mg/L, and the single treatment concentrations of dithiocyano-methane and nano-silver are set to be 0.5+0.5 (1: 1), 2+0.5 (2: 1), 4+0.5 (8: 1), 0.5+1 (0.5: 1), 2+1 (2: 1) and 4+1 (4: 1) mg/L. A control without medicine is additionally arranged. Each treatment was repeated 4 times.
The test method comprises the following steps: plate colony counting was used. And (3) respectively adding 19mL of sterilized liquid culture medium into a 50mL triangular flask, respectively adding the treated medicament, and respectively adding 1mL of bacterial liquid. After shaking on a constant temperature shaking table at 37 ℃ for 8h, 100. mu.L of the diluted bacterial suspension is uniformly coated on a flat plate, and the flat plate is placed upside down in a constant temperature and humidity incubator at 37 ℃ for 24h, and the result is observed.
Data investigation and statistical analysis: colonies were counted 14 days after inoculation, and activity against E.coli was evaluated according to the number of colonies. The inhibition was calculated as follows:
inhibition (%) - (control colony count-treated colony count)/control colony count × 100
The theoretical inhibition (E) is calculated as follows:
e (%) (-) dithiocyano methane inhibition rate + (100-dithiocyano methane inhibition rate) (-) nano silver inhibition rate/100
Judgment of the interaction effect of mixture: actual inhibition rate) theoretical inhibition rate, indicating synergistic effect; the actual inhibition rate is the theoretical inhibition rate, and the addition effect is shown; the actual inhibition rate is less than the theoretical inhibition rate, and the antagonism is shown.
Analysis and discussion of results
The dithiocyano-methane is singly used at 0.5, 2 and 4mg/L, and the growth inhibition rates of the dithiocyano-methane to escherichia coli are respectively 52 percent, 61 percent and 68 percent; the growth inhibition rate of the nano-silver on the escherichia coli by using 0.5 mg/L and 1mg/L respectively is 38% and 69% (table 3).
Actual inhibition rates of dithiocyano-methane and nano-silver of 0.5+0.5 (1: 1), 2+0.5 (2: 1), 4+0.5 (8: 1), 0.5+1 (0.5: 1), 2+1 (2: 1) and 4+1 (4: 1) mg/L on growth of escherichia coli are respectively 81%, 88%, 96%, 92%, 98% and 100%, and the actual inhibition rates of six mixed treatments are 7% -16% higher than the theoretical inhibition rate (Table 3).
The result shows that the Escherichia coli mixed with the dithiocyano-methane and the nano-silver in the ratio of 0.5-8: 1 shows a synergistic effect.
TABLE 3 synergistic effect of dithiocyanomethane and nanosilver on Escherichia coli (Escherichia coii)
Example preservation of Wood with 42% Dithiocyanomethane and 2% Nanosilver mixture
Wood for test: pine wood (20 cm long, 4 cm diameter)
The test method comprises the following steps: pine is soaked in a mixed solution of 2% of dithiocyano methane and 2% of nano silver for 1 day, and then the brown rot fungus is inoculated. No drug clean water treatment is used for comparison. Each treatment was repeated 4 times. The wood was inspected for decay after 3 months.
And (3) test results: all treated wood did not decay, while control wood, showed a different degree of decay. Test results show that the 2 percent of dithiocyano-methane and the 2 percent of nano-silver can effectively prevent wood from rotting when being mixed.
Claims (2)
1. A sterilization and algae-killing synergistic composition for paint, coating, water and wood is characterized in that: is formed by combining dithiocyano-methane and nano-silver, and the weight ratio of the dithiocyano-methane to the nano-silver is 0.5-8: 1.
2. The use of the bactericidal and algicidal composition for paints, coatings, water and wood according to claim 1, wherein the addition to paints and coatings prevents the paints and coatings from mildewing, growing algae; treating wood to prevent decay; the water body is treated to kill microorganisms and algae.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102578131A (en) * | 2012-02-03 | 2012-07-18 | 上海韬鸿化工科技有限公司 | Sterilizing and algae-removing agent and application thereof |
| CN103988847B (en) * | 2014-06-07 | 2015-12-09 | 海南正业中农高科股份有限公司 | Bactericidal composition containing chitosan oligosaccharide and dithiocyano-methane |
| WO2018083675A1 (en) * | 2016-11-07 | 2018-05-11 | Jubilant Life Sciences Limited | Synergistic antimicrobial compositions |
| CN106797955A (en) * | 2017-01-13 | 2017-06-06 | 上海鹏图化工科技有限公司 | Antifouling algicide of environment-protection nano and preparation method thereof |
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