CN109757493A - Aqueous suspension composition and its spraying method suitable for unmanned aerial vehicle - Google Patents
Aqueous suspension composition and its spraying method suitable for unmanned aerial vehicle Download PDFInfo
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- CN109757493A CN109757493A CN201910115666.4A CN201910115666A CN109757493A CN 109757493 A CN109757493 A CN 109757493A CN 201910115666 A CN201910115666 A CN 201910115666A CN 109757493 A CN109757493 A CN 109757493A
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Abstract
The present invention provides a kind of aqueous suspension composition suitable for unmanned aerial vehicle, ingredients are as follows: Fluoxastrobin, polyacrylate, polyethylene glycol, surfactant, thickener, He Shui.On the basis of the total amount of composition, Fluoxastrobin 10%-30%, polyacrylate 0.1-10%, polyethylene glycol 0.01-5%, other compositions content is not specially limited.The spraying method of aqueous suspension composition suitable for unmanned aerial vehicle of the invention is diluted using 3-31 times of water, and 4-32 kilograms of dilution of per hectare is sprayed using plant protection unmanned aerial vehicle.It selects molecular weight for the polyacrylate of 4000-1000, can effectively solve the problems, such as that suspending agent effective component is unstable under low extension rate, be allowed to spray use suitable for plant protection unmanned aerial vehicle.It selects molecular weight for the polyethylene glycol of 400-6000, the physicochemical property that medical fluid sprays rear droplet can be improved, improve the using effect after spraying using plant protection unmanned aerial vehicle.
Description
Technical field
The invention belongs to technical field of pesticide, and in particular to be suitable for unmanned aerial vehicle to pesticide activity component for Fluoxastrobin
Aqueous suspension composition pesticide and spraying method.
Background technique
Fluoxastrobin belongs to beta-methoxy acrylic ester fungicide, and Chinese reaches for Amici, is opened by Syngenta Co., Ltd
Hair, chemical formula C22H17N3O5, CAS 131860-33-8, chemical name (E)-[2- [6- (2- cyano-benzene oxygen) pyrimidine -4-
Base oxygen] phenyl] -3- methoxy-methyl acrylate.Fluoxastrobin, which has, to be protected, treats, rooting out and anti-sporification.In plant disease
Protective effect, eradicant action are mainly showed in prevention and treatment, and also there is therapeutic effect to certain diseases.Make with interior suction and cross-layer transfer
With.It can be absorbed by plant roots, leaf, tender stem, the apoplast system transporting in plant.Efficiently, wide spectrum, to almost all of ascus
Bacterium, basidiomycetes, oomycetes and Fungi Imperfecti have very high activity.Can be used for prevent and treat to 14- demethylation inhibitor, phenylamide,
The drug-resistant pathogen opportunistic pathogen of dicarboximide class and benzimidazole germicide.
It carries out flying anti-operation being to cope with one of the development trend of the prevention and control of plant diseases, pest control in recent years using plant protection unmanned aerial vehicle, utilize
Unmanned aerial vehicle is sprayed also referred to as " fly anti-" or " aviation plant protection ".Aviation plant protection with it is traditional artificial by spraying compared with, have quickly,
Efficiently, flexibly the features such as, in the use experience of external existing decades.It is limited by self performance, plant protection unmanned aerial vehicle is usual
Loading capacity is 10-24 kilograms or so.Usually when ground sprays, conventional suspension dosage form, which generally requires to dilute thousands of times, can just make
With cumbersome if unmanned aerial vehicle, which according to same extension rate, needs to be repeated, rises and falls and supplement medical fluid.Therefore,
When carrying out pesticide application using unmanned aerial vehicle, pesticide is usually diluted 4-32 times or so.
Common aqueous agricultural-chemical preparation such as suspending agent, aqueous emulsion, missible oil, wettable powder etc. is being applied to plant protection unmanned aerial vehicle
Later, it often will appear the phenomenon that flocculation, sedimentation, demulsification, layering etc. influence liquid medicine stability, needing to add auxiliary agent could be normal
It uses.
By taking suspending agent as an example, reason is in the spray liquid for the high-concentration suspension agent that such low power number is prepared, ground spray
Mist does not consider the problems of to display.Since the pesticide activity component concentration in spray liquid is high, the sedimentation ratio of ingredient
It significantly increases, seriously affects the stability of suspending agent type.The rising of sedimentation ratio is so that pesticide activity component is easily deposited on system
On the chamber wall of standby spray liquid, easily agglomerates after merging aircraft spray tank, generates cotton-shaped deposition, easily block spray head when spraying again, draw
Play failure.
Plant protection unmanned aerial vehicle is different from common spraying equipment.Plant protection unmanned aerial vehicle flying height is usually at 2-5 meters, under rotor
Side can generate wind field, be not easy the page back adhered to, stalk lower section to be conducive to medical fluid and cover conventional spraying method, theoretical
On the utilization efficiency of medical fluid can be improved.But during droplet moves in the sky, lateral drift, droplet water are often generated
Point evaporation lead to not crop surface adhere to the problems such as, so, the medicament suitable for plant protection unmanned aerial vehicle need anti-drift,
The performance requirements such as anti-evaporating.
Solve the problems, such as appeal, difference, inventor have been directed to phonetic due to the physicochemical property of pesticide activity component difference for meeting
The physicochemical property of bacterium ester, the sedimentation ratio of spray liquid is excessive under low extension rate in order to prevent forms cotton-shaped deposition, has studied
A kind of Fluoxastrobin aqueous suspension composition pesticide sprayed suitable for unmanned aerial vehicle.
Currently, about have suitable unmanned aerial vehicle spray performance Fluoxastrobin suspending agent type report there is no.
Summary of the invention
It solves the above problems, needs to comprehensively consider physicochemical property, dispersion degree, interfacial tension, the moisture holding capacity of farm chemical ingredients
Etc. factor.In addition to this, the interaction between component will also have an impact the liquid medicine stability of suspension composition.
It is an object of the present invention to have studied a kind of Fluoxastrobin aqueous suspension pesticide combination sprayed suitable for unmanned aerial vehicle
Object can inhibit the particle buildup effect in medical fluid when using the medical fluid of low extension rate compounding high concentration, reduce settling ratio
Example, so not influencing storage stability, can also inhibit the formation of floccule, improve medical fluid in plant protection unmanned aerial vehicle application
In stability.The movenent performance for improving droplet during spraying simultaneously is allowed to be suitable for the flight operation of plant protection unmanned aerial vehicle
Needs.
The present invention is accomplished by the following way:
The aqueous suspension pesticide combination suitable for unmanned aerial vehicle without containing pesticide activity component Fluoxastrobin, polyacrylate,
Polyethylene glycol, surfactant, thickener and water.
In the present invention, pesticide activity component is Fluoxastrobin, although the proportion of Fluoxastrobin is not particularly limited, with aqueous outstanding
On the basis of the total amount of floating composition pesticide, the usually mass range of 10-30%.
In the present invention, use polyacrylate as the inhibition sedimentation active principle that when floccule generates in medical fluid.
The component of polyacrylate is not particularly limited, but molecular weight shows good inhibition effect in 4000-10000 or so
Fruit, especially the molecular weight best performance in 4500-6000.The component of polyacrylate is not particularly limited, but inventor
By screening, discovery sodium salt, ammonium salt, calcium salt performance are prominent.The Sodium Polyacrylate, ammonium polyacrylate, polyacrylic acid aluminium can
To be used alone or be used in combination.
In the present invention, the dosage of polyacrylate is not particularly limited, but on the basis of the total amount of composition, usually
For 0.1-10%.
In the present invention, polyethylene glycol is used to carry out inhibition sedimentation, flocculated active principle as auxiliary polyacrylate,
The droplet moisture evaporation formed during being sprayed at the same time as anti-medical fluid, the component for maintaining droplet size, improving droplet performance.
The component of polyethylene glycol is not particularly limited, but molecular weight works well in 400-6000 or so.
In the present invention, it the dosage of polyethylene glycol and is not specially limited, but on the basis of the total amount of composition, usually
For 0.01-5%.
In the present invention, it in order to be effectively dispersed in the solid components such as Fluoxastrobin in composition, needs to be mixed into surface
Activating agent.The surfactant can be selected from lignosulfonates, naphthalene and alkyl naphthalene formaldehyde condensate sulfonate, polyoxy second
Alkene polyoxypropylene base ether block copolymers, alkylphenol-polyethenoxy phosphate, amino acid, poly- alkyl glycol higher fatty acids
Ester, polyoxyalkyl ether, polyoxy alkhyl ethers, polyoxy alkyl alcohol phenyl ether, polyoxyalkyl ether sulfate, polyoxy alkyl phenyl ether
One of sulfate, polyoxy alkyl phenyl ether phosphate are appointed several, are also possible to any known with surface-active
Substance.
In the present invention, the dosage of Surfactant is not specially limited, but on the basis of the total amount of composition, is led to
Often between 0.1-15%.
In the present invention, it in order to promote the stability of decentralized medium, needs to add thickener.The thickener can be choosing
From Arabic gum, arm protein, xanthan gum, methylcellulose, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, third
One of substances such as olefin(e) acid sodium, polyvinylpyrrolidone, Sodium Polyacrylate, polyvinyl acetate, alginate, pectin are appointed
It is several.
In the present invention, water is a part of Fluoxastrobin dispersion medium.Water mentioned here can be pure water or distillation
Water is also possible to satisfactory industrial water or agricultural water.Water dosage in the present invention is simultaneously not specially limited, still
Compared with the amount of Fluoxastrobin, if when water deficiency, Fluoxastrobin-water separate system in aqueous suspension composition will become unstable,
So the dosage of water is generally no less than the amount of Fluoxastrobin.
In the present invention, according to actual demand, other adjuvants can be added.It, can as the adjuvant of any ingredient
To be antifreezing agent, defoaming agent, pH regulator etc..
In the present invention, antifreezing agent can be sub- selected from ethylene glycol, propylene glycol, glycerol, glycerol-ether diglycol, methyl
One of substances such as propyl diglycol are appointed several.
In the present invention, defoaming agent can be selected from organosilicon ketone, the fatty alcohol of C8-10, C10-20 representative examples of saturated aliphatic
One of carboxylic acid and its esters, ester-ether type compound are appointed several.
In the present invention, pH regulator can be selected from acidic materials known to acetic acid, hydrochloric acid etc. and sodium hydroxide, hydroxide
One of alkaline matter known to potassium, ammonium hydroxide and ammonium salt, triethanolamine etc. is appointed several.
In the present invention, any water-insoluble organic solvents are not contained.Therefore, benzene,toluene,xylene, ethylbenzene, benzene second
Alkene, kerosene, methylene chloride, chloroform, carbon tetrachloride, carbon disulfide, Liquid Paraffin, higher fatty acids, aliphatic ester, aromatic series carboxylic
The water-insoluble organic solvents such as acid esters are unwanted.
In the present invention, for aqueous suspension agent, if if the bottom of viscosity pole, suspension composition medical fluid point in storage
Layer will be obvious, and the present invention has carried out preferably viscosity region, it is possible to reduce medical fluid layering, and there is good spray head
Spray performance.When being measured under 20 degrees Celsius, the speed conditions of 30rpm using rotational viscometer, viscosity 200-650mPa
s。
In the present invention, the Fluoxastrobin can be sterling or industrial substance, can be by pesticide activity component wall material packet
It covers and microcapsules is made, pesticide activity component can also be adsorbed onto poroid core material and microcapsules are made.Before pesticide activity component
Processing technique is not particularly limited, and any known preparation method and material can be used.
In the present invention, the method that preparation is suitable for the aqueous suspension composition pesticide of unmanned aerial vehicle is not particularly limited,
The most commonly used is mixing Fluoxastrobin, polyacrylate, surfactant, thickener, water and other timess added according to actual needs
It anticipates ingredient, by the way of wet pulverizing, by high-speed stirred together with crushing medium with bead, ceramic bead, stainless shot etc.,
Obtain the aqueous suspension pesticide of the present invention suitable for unmanned aerial vehicle.It can also be using the methods of air-flow crushing to Fluoxastrobin
Dry grinding is carried out, then is mixed with components such as polyacrylate, surfactant, thickener, water, the present invention is obtained by dispersion
The aqueous suspension composition pesticide suitable for unmanned aerial vehicle.
In the present invention, no matter using the obtained aqueous suspension pesticide combination for being suitable for unmanned aerial vehicle of which kind of method
Object, in order to ensure Fluoxastrobin can have good dispersion effect in dilution, Fluoxastrobin is preferably fine.In crushing process
In, the average grain diameter of Fluoxastrobin is at 0.2-10 μm, and preferably 0.5-5.5 microns.Aqueous suspension pesticide group suitable for unmanned aerial vehicle
When Fluoxastrobin partial size in conjunction object is more than 10 μm, just it is easy to be layered in storing process.And in dilution, Fluoxastrobin grain
Son is easy precipitating, to hardly result in uniform dilution.
Aqueous suspension composition pesticide of the present invention suitable for unmanned aerial vehicle, refers to and can satisfy plant protection unmanned aerial vehicle
Farm work requirement, the high concentration agricultural chemical dilution prepared under the conditions of about 3-31 times of low extension rate are steady when being sprayed in the air
It is qualitative good.
Heretofore described aerial spraying method, by the aqueous suspension pesticide of the present invention suitable for unmanned aerial vehicle
Composition is diluted to 31 times of standard quality and below sprays in water.On arable land, preferred 4-32KG water, using plant protection nobody
Aerial spray.
In spray liquid, polyacrylate can prevent the formation of the cotton-shaped agglomeration of suspended matter.The polyacrylic acid in spray liquid
The concentration of salt is not particularly limited, but considering cost factor, concentration do not exceed 5000ppm.Therefore in spray liquid
In polyacrylate concentration be 100-5000ppm.
In spray liquid, polyethylene glycol can assist polyacrylate to play a role.Polyethylene glycol is dense in spray liquid
Degree is not particularly limited, but polyacrylate is not to be exceeded in the dosage of polyethylene glycol.
Specific embodiment
Embodiment 1:
Fluoxastrobin 25%, the Sodium Polyacrylate 0.6% of molecular weight 5000, the polyethylene glycol 0.05% of molecular weight 1000, polyoxy alkylbenzene
Ether-ether phosphate 5%, propylene glycol 10%, xanthine 0.3%, poly- alkyl polysiloxane 0.02% and water 59.03%, wet pulverizing, until
Average grain diameter reaches 3 μm, has obtained the aqueous suspension composition pesticide containing 20 % effective components.The aqueous suspension obtained in this way
The viscosity of composition pesticide is 596mPas.
Embodiment 2:
Fluoxastrobin 25%, the Sodium Polyacrylate 2% of molecular weight 5000, the polyethylene glycol 0.05% of molecular weight 1000, polyoxy alkyl phenylate
Ester phosphate 5%, propylene glycol 10%, xanthine 0.3%, poly- alkyl polysiloxane 0.02% and water 57.63%, wet pulverizing, until flat
Equal partial size reaches 3 μm, has obtained the aqueous suspension composition pesticide containing 20 % effective components.The aqueous suspension agriculture obtained in this way
The viscosity of drug composition is 571mPas.
Embodiment 3:
Fluoxastrobin 25%, the Sodium Polyacrylate 5% of molecular weight 5000, the polyethylene glycol 0.1% of molecular weight 1000, propylene glycol 10% are yellow
Purine 0.3%, poly- alkyl polysiloxane 0.02% and water 59.68%, wet pulverizing are contained until average grain diameter reaches 3 μm
There is the aqueous suspension composition pesticide of 20 % effective components.The viscosity of the aqueous suspension composition pesticide obtained in this way is
603mPa·s。
Embodiment 4:
Fluoxastrobin 25%, the Sodium Polyacrylate 0.6% of molecular weight 5000, the polyethylene glycol 0.1% of molecular weight 1000, polyoxy alkylbenzene
Ether sulfate 1.5%, poly- alkyl acrylic sodium 0.8%, polyoxy allyl phenyl ether sulfate 1.5%, ethylene glycol 7.6%, flowing
Paraffin 9%, xanthine 0.28%, poly- alkyl polysiloxane 0.02% and water 53.7%, wet pulverizing, until average grain diameter reaches 3 μm,
The aqueous suspension composition pesticide containing 20 % effective components is obtained.The viscosity of the aqueous suspension composition pesticide obtained in this way
For 302mPas.
Embodiment 5:
Test medicine: 25% Fluoxastrobin suspending agent (commercially available), the 25% Fluoxastrobin suspending agent (number containing Sodium Polyacrylate of the present invention
A), 25% Fluoxastrobin suspending agent (number B) of Sodium Polyacrylate polyethylene glycol
Test apparatus: 3WQF120-12 plant protection drone (Anyang Quan Feng aviation plant protection Science and Technology Ltd.);Anemobiagraph;Temperature and humidity
Instrument;Water sensitive paper;Filter paper, valve bag, scissors, gimbal, syringe, filter membrane etc..
1 Anyang of table rich 3WQF120-12 plant protection drone operation relevant parameter entirely
Test period: on April 21st, 2018
Test site: Hainan Province, phoenix town, Sanya
Environment temperature: 37.0 DEG C
Wind speed: 1.2-2.3m/s
Subjects: rice
Planting density: 22.7 clumps/cm2
Test result:
The droplet density distribution situation of rice canopy under 2 different disposal of table
As seen from the results in Table 2, droplet density of the Fluoxastrobin suspending agent on rice top containing Sodium Polyacrylate is significantly higher than commercially available
Conventional Fluoxastrobin suspending agent, but the droplet density distribution of lower part is unsatisfactory, and after polyethylene glycol is added, upper, middle and lower droplet is close
The otherness of degree has apparent reduction, illustrates that Sodium Polyacrylate polyethylene glycol Fluoxastrobin suspending agent possesses better dispersibility
Energy.
The deposition distribution situation of rice canopy under 3 different disposal of table
From the data in table 3, it can be seen that deposition distribution of the Fluoxastrobin suspending agent on rice top containing Sodium Polyacrylate be better than it is conventional phonetic
Bacterium ester suspending agent, but the effect is unsatisfactory for middle and lower part promotion.And Sodium Polyacrylate polyethylene glycol Fluoxastrobin suspending agent can be shown
The movenent performance for improving droplet is write, is significantly larger than upper two groups in the deposition distribution of middle part and lower part.
The effective deposition situation of droplet under the conditions of 4 different disposal of table
4 data of table further demonstrate the conclusion that 3 data of table obtain, the i.e. relatively conventional phonetic bacterium of the Fluoxastrobin suspending agent of Sodium Polyacrylate
Ester suspending agent, which has, to be more obviously improved, but Sodium Polyacrylate polyethylene glycol Fluoxastrobin suspending agent can make medicine liquid spray matter
Amount, which has, more fully to be promoted.
Table 5 tests different disposal partial size situation using laser particle analyzer
By 5 data of table it is found that A is compared with commercially available medicament, mist droplet particle size has apparent reduction, illustrates that Sodium Polyacrylate can be with
Improve the dispersion performance of unmanned aerial vehicle Fluoxastrobin suspending agent when spraying, but when unmanned aerial vehicle sprays, mist droplet particle size too it is small not
Mean that medical fluid can be effectively attached on crop.By polyethylene glycol suitable control mist droplet particle size, moisture evaporation is reduced,
Suspending agent can instead possessed and preferably sprays performance.
Claims (19)
1. a kind of aqueous suspension composition pesticide suitable for unmanned aerial vehicle contains pesticide activity component Fluoxastrobin, polyacrylic acid
Salt, polyethylene glycol, surfactant, thickener and water.
2. the aqueous suspension composition pesticide according to claim 1 suitable for unmanned aerial vehicle, it is characterised in that: with combination
On the basis of the total amount of object, the proportion for appealing Fluoxastrobin is 10%-30%.
3. the aqueous suspension composition pesticide according to claim 1 or 2 suitable for unmanned aerial vehicle, it is characterised in that: institute
The molecular weight for stating polyacrylate is 4000-10000.
4. the aqueous suspension composition pesticide according to claim 3 suitable for unmanned aerial vehicle, it is characterised in that: described poly-
The molecular weight of acrylates is 4500-6000.
5. according to claim 1 to 4 it is one of any described in the aqueous suspension composition pesticide suitable for unmanned aerial vehicle, feature
Be: the polyacrylate is one or more of Sodium Polyacrylate, ammonium polyacrylate, polyacrylic acid aluminium.
6. according to claim 1 to 5 it is one of any described in the aqueous suspension composition pesticide suitable for unmanned aerial vehicle, feature
Be: the polyacrylate accounts for the 0.1-10% of total composition.
7. the aqueous suspension composition pesticide according to claim 1 suitable for unmanned aerial vehicle, it is characterised in that: described poly-
The molecular weight of ethylene glycol is 400-6000.
8. according to claim 1 to 7 it is one of any described in the aqueous suspension composition pesticide suitable for unmanned aerial vehicle, feature
Be: the polyethylene glycol accounts for the 0.01-5% of total composition.
9. according to claim 1 to 8 it is one of any described in the aqueous suspension composition pesticide suitable for unmanned aerial vehicle, feature
It is: without containing water-insoluble organic solvents.
10. according to claim 1 to 9 it is one of any described in the aqueous suspension composition pesticide suitable for unmanned aerial vehicle, spy
Sign is: using rotational viscometer, when measuring under 20 degrees Celsius, the speed conditions of 30rpm, viscosity is 200-650mPa s.
11. the aqueous suspension composition pesticide according to claim 1 suitable for unmanned aerial vehicle, it is characterised in that: be one
Kind can be used for the pesticidal preparations of unmanned aerial vehicle sprinkling.
12. according to claim 1 to 11 it is one of any described in the aqueous suspension composition pesticide suitable for unmanned aerial vehicle, one kind
Use plant protection unmanned aerial vehicle spraying method, it is characterised in that: relative to the total amount of composition, diluted with 3-31 times of water, agriculture
It is sprayed with arable land per hectare with 4-32 kilograms of dilution.
13. the spraying method of the aqueous suspension composition pesticide according to claim 12 suitable for unmanned aerial vehicle, special
Sign is: described with water is that the waterborne liquid of the auxiliary agent of specified amount is diluted in water or water.
14. the spraying method of the aqueous suspension composition pesticide according to claim 12 or 13 suitable for unmanned aerial vehicle,
It is characterized by: the molecular weight of the polyacrylate is 4000-10000.
15. the spraying method of the aqueous suspension composition pesticide according to claim 12 or 13 suitable for unmanned aerial vehicle,
It is characterized by: the molecular weight of the polyacrylate is 4500-6000.
16. according to claim 12 to 15 it is one of any described in the aqueous suspension composition pesticide suitable for unmanned aerial vehicle spray
Applying method, it is characterised in that: the polyacrylate be one of Sodium Polyacrylate, ammonium polyacrylate, polyacrylic acid aluminium or
It is several.
17. according to claim 12 to 16 it is one of any described in the aqueous suspension composition pesticide suitable for unmanned aerial vehicle spray
Applying method, it is characterised in that: the concentration of polyacrylate in the dilution are as follows: 100-5000ppm.
18. the spraying method of the aqueous suspension composition pesticide according to claim 12 or 13 suitable for unmanned aerial vehicle,
It is characterized by: the molecular weight of the polyethylene glycol is 400-6000.
19. according to claim 12 to 18 it is one of any described in the aqueous suspension composition pesticide suitable for unmanned aerial vehicle spray
Applying method, it is characterised in that: the concentration of polyethylene glycol is 10-2500ppm in the dilution.
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Application publication date: 20190517 |