CN110583641A - Agricultural auxiliary agent for flight control, and preparation method and application thereof - Google Patents
Agricultural auxiliary agent for flight control, and preparation method and application thereof Download PDFInfo
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- CN110583641A CN110583641A CN201910838021.3A CN201910838021A CN110583641A CN 110583641 A CN110583641 A CN 110583641A CN 201910838021 A CN201910838021 A CN 201910838021A CN 110583641 A CN110583641 A CN 110583641A
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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
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
- A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
- A01N25/06—Aerosols
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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
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/24—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing ingredients to enhance the sticking of the active ingredients
-
- 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
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/30—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests characterised by the surfactants
Abstract
The invention discloses a flying prevention agricultural additive and a preparation method and application thereof, belonging to the technical field of agricultural additives. The invention discloses a flying prevention agricultural auxiliary agent which is a composition consisting of styrene-acrylic emulsion, polyoxyethylene polyoxypropylene polyether, fatty alcohol-polyoxyethylene ether, sodium diisooctyl succinate sulfonate and a polyhydroxy compound, and can increase the specific gravity of liquid medicine and the particle size of fog drops. The flying prevention agricultural auxiliary agent disclosed by the invention has better performances of transpiration resistance, drift resistance, wetting, adhesion and the like.
Description
Technical Field
The invention relates to the technical field of agricultural additives, in particular to a flying prevention agricultural additive and a preparation method and application thereof.
Background
At present, the airplane prevention and control in China develops rapidly. The airplane control is different from the conventional ground spraying, and is low-volume or ultra-low-volume spraying, and the spraying is more than 1m away from a plant canopy and is easily influenced by temperature and climate, so that the liquid medicine is easy to drift and transpire in the spraying process.
Aiming at the problems, the method mainly comprises the steps of adding an auxiliary agent with the functions of resisting drift and transpiration; most of the current flying prevention agricultural additives are oil additives, organic silicon and the like. Oil additives, particularly vegetable oil additives, are complex in components and unstable in performance, and because the oil additives are insoluble in water and can only be emulsified and dispersed in water, the instability of a liquid medicine system is easily caused; the organosilicon obviously reduces the surface tension of the liquid medicine, but has poor anti-drift performance.
Therefore, the problem to be solved by the technical personnel in the field is to provide a flying and defense agricultural auxiliary agent and a preparation method and application thereof.
Disclosure of Invention
In view of the above, the invention provides an agricultural flying prevention aid and a preparation method and application thereof, and the obtained aid has good drift resistance, transpiration resistance and wetting property.
In order to achieve the purpose, the invention adopts the following technical scheme:
the agricultural flying prevention additive consists of the following components in parts by weight: 5-30 parts of styrene-acrylic emulsion, 10-30 parts of polyoxyethylene polyoxypropylene polyether, 10-40 parts of fatty alcohol-polyoxyethylene ether, 5-20 parts of diisooctyl succinate sodium sulfonate and 5-20 parts of polyhydroxy compound.
The styrene-acrylic emulsion is a milky liquid with blue light and is prepared by emulsion copolymerization of styrene and acrylic ester monomers. The solid content is 40-50%, and the viscosity is 80-2000 mPa. The styrene-acrylic emulsion has wide application as an important intermediate chemical product, and is mainly used as building coating, metal surface latex coating, floor coating, paper adhesive, adhesive and the like. The styrene-acrylic emulsion has good adhesive force, transparent adhesive film, good water resistance, oil resistance, heat resistance and aging resistance.
The polyoxyethylene polyoxypropylene polyether has low toxicity, and can be used as emulsifier and excipient in food industry, and also used as sugar boiling auxiliary agent; as low-foaming emulsifiers in the textile industry; as emulsifiers and thickeners in the cosmetics industry; in the detergent industry for the formulation of dishwashing detergents, metal cleaners; can be used as corrosion inhibitor, demulsifier and additive in the industries of plastics, coatings and the like.
The polyhydroxy compound can adsorb water, has moisture keeping effect, and has certain viscosity at high concentration.
Preferably, the flying prevention agricultural additive consists of the following components in parts by weight: 20-30 parts of styrene-acrylic emulsion, 15-25 parts of polyoxyethylene polyoxypropylene polyether, 20-30 parts of fatty alcohol-polyoxyethylene ether, 10-15 parts of diisooctyl succinate sodium sulfonate and 5-15 parts of polyhydroxy compound.
Further, the polyoxyethylene polyoxypropylene polyether is one or more of propylene glycol polyoxyethylene polyoxypropylene ether, glycerol polyoxyethylene polyoxypropylene ether, butanol polyoxyethylene polyoxypropylene ether, lauric acid polyoxyethylene polyoxypropylene ether and lauryl alcohol polyoxyethylene polyoxypropylene ether. When the polyoxyethylene polyoxypropylene polyether is two or more selected from the above specific choices, the specific material ratio is not particularly limited, and the polyoxyethylene polyoxypropylene polyether may be mixed at any ratio.
Further, the fatty alcohol-polyoxyethylene ether is one or more of isomeric tridecanol polyoxyethylene ether, isomeric decyl alcohol polyoxyethylene ether and cetearyl alcohol polyoxyethylene ether. When the fatty alcohol-polyoxyethylene ether is more than two of the specific choices, the proportion of the specific substances is not particularly limited, and the specific substances can be mixed according to any proportion.
Further, the polyhydroxy compound is one or more of sorbitol, lactose, fructose, glucose and mannitol. When the polyhydroxy compounds are more than two of the above specific choices, the specific substances are not particularly limited in proportion, and the polyhydroxy compounds can be mixed according to any proportion.
Further, a preparation method of the flying prevention agricultural additive comprises the following specific steps:
(1) adding the styrene-acrylic emulsion, the sodium diisooctyl succinate sulfonate and the polyhydroxy compound into a mixing kettle according to the weight, stirring and uniformly mixing; the stirring speed is 20-100r/min, the stirring time is 5-60min, and the stirring temperature is 10-50 ℃;
(2) under the stirring condition, adding polyoxyethylene polyoxypropylene polyether and fatty alcohol polyoxyethylene ether, stirring, and uniformly mixing; the stirring speed is 20-100r/min, the stirring time is 10-60min, and the stirring temperature is 10-50 ℃.
Preferably, the stirring speed is 30-50r/min, the stirring time is 20-30min, and the stirring temperature is 25 ℃.
Further, the application of the flying prevention agricultural auxiliary agent in the pesticide is that the flying prevention agricultural auxiliary agent is added into pesticide spraying liquid medicine for mixing and then spraying is carried out; the flying prevention agricultural auxiliary agent accounts for 0.1-3% of the pesticide spraying liquid medicine in mass.
According to the technical scheme, compared with the prior art, the invention discloses and provides the flight control agricultural auxiliary agent and the preparation method and the application thereof, the flight control agricultural auxiliary agent is a composition of styrene-acrylic emulsion, polyoxyethylene polyoxypropylene polyether, fatty alcohol-polyoxyethylene ether, sodium diisooctyl succinate sulfonate and polyhydroxy compound, and the specific gravity of the liquid medicine and the particle size of fog drops can be increased; the flying prevention agricultural auxiliary agent has better performances of transpiration resistance, drift resistance, wetting, adhesion and the like.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The raw material components used in the invention are all commercial products, for example, the styrene-acrylic emulsion is purchased from Dow PRIML DC-420, the propylene glycol polyoxyethylene polyoxypropylene ether and the isomeric dodecyl polyoxyethylene ether are purchased from Heian petrochemical plants of Jiangsu province, the sodium diisooctyl succinate is purchased from Nantong Chengning Runzhu chemical Co., Ltd, the sorbitol is purchased from Shouguang Runzhu and Runzu Co., Ltd, and the manufacturers are not limited to the above factories.
Example 1
The agricultural flying prevention additive consists of the following components in parts by weight: 10 parts of styrene-acrylic emulsion, 25 parts of propylene glycol polyoxyethylene polyoxypropylene polyether, 40 parts of isomeric tridecanol polyoxyethylene ether, 20 parts of sodium diisooctyl succinate sulfonate and 5 parts of mannitol.
The preparation method of the flying prevention agricultural additive comprises the following specific steps:
(1) adding the styrene-acrylic emulsion, sodium diisooctyl succinate sulfonate and mannitol into a mixing kettle according to weight, stirring and uniformly mixing; the stirring speed is 20r/min, the stirring time is 60min, and the stirring temperature is 15 ℃;
(2) under the condition of stirring, adding propylene glycol polyoxyethylene polyoxypropylene polyether and isomeric tridecanol polyoxyethylene ether, stirring, and uniformly mixing; the stirring speed is 20r/min, the stirring time is 60min, and the stirring temperature is 15 ℃.
Example 2
The agricultural flying prevention additive consists of the following components in parts by weight: 20 parts of styrene-acrylic emulsion, 12 parts of butanol polyoxyethylene polyoxypropylene polyether, 28 parts of isomeric lauryl alcohol polyoxyethylene ether, 15 parts of diisooctyl succinate sodium sulfonate and 15 parts of lactose.
The preparation method of the flying prevention agricultural additive comprises the following specific steps:
(1) adding the styrene-acrylic emulsion, sodium diisooctyl succinate sulfonate and lactose into a mixing kettle according to the weight, stirring and uniformly mixing; the stirring speed is 50r/min, the stirring time is 30min, and the stirring temperature is 25 ℃;
(2) under the stirring condition, adding butanol polyoxyethylene polyoxypropylene polyether and isomeric dodecyl alcohol polyoxyethylene ether, stirring, and uniformly mixing; the stirring speed is 50r/min, the stirring time is 30min, and the stirring temperature is 25 ℃.
Example 3
The agricultural flying prevention additive consists of the following components in parts by weight: 30 parts of styrene-acrylic emulsion, 22 parts of lauryl polyoxyethylene polyoxypropylene ether, 12 parts of cetearyl polyoxyethylene ether, 16 parts of diisooctyl succinate sodium sulfonate and 20 parts of fructose.
The preparation method of the flying prevention agricultural additive comprises the following specific steps:
(1) adding the styrene-acrylic emulsion, the sodium diisooctyl succinate sulfonate and the fructose into a mixing kettle according to the weight, stirring and uniformly mixing; the stirring speed is 80r/min, the stirring time is 20min, and the stirring temperature is 25 ℃;
(2) under the condition of stirring, adding lauryl polyoxyethylene polyoxypropylene ether and cetearyl polyoxyethylene ether, stirring and uniformly mixing; the stirring speed is 80r/min, the stirring time is 25min, and the stirring temperature is 25 ℃.
Example 4
The agricultural flying prevention additive consists of the following components in parts by weight: 30 parts of styrene-acrylic emulsion, 20 parts of propylene glycol polyoxyethylene polyoxypropylene polyether, 25 parts of isomeric dodecyl alcohol polyoxyethylene ether, 13 parts of sodium diisooctyl succinate sulfonate and 12 parts of sorbitol.
The preparation method of the flying prevention agricultural additive comprises the following specific steps:
(1) adding the styrene-acrylic emulsion, the sodium diisooctyl succinate sulfonate and the sorbitol into a mixing kettle according to the weight, stirring and uniformly mixing; the stirring speed is 100r/min, the stirring time is 10min, and the stirring temperature is 50 ℃;
(2) under the condition of stirring, adding propylene glycol polyoxyethylene polyoxypropylene polyether and isomeric dodecyl alcohol polyoxyethylene ether, stirring, and uniformly mixing; the stirring speed is 100r/min, the stirring time is 10min, and the stirring temperature is 50 ℃.
Comparative example 1
Specific composition of the flying agricultural adjuvant reference is made to example 4, the only difference being that the styrene-acrylic emulsion is changed to an equal amount of water.
Comparative example 2
Specific composition of the flying agricultural adjuvant reference is made to example 4, except that propylene glycol polyoxyethylene polyoxypropylene polyether is replaced with an equal amount of water.
Comparative example 3
The specific composition of the flying agricultural adjuvant is as described in example 4, except that the same amount of water was used instead of the isomeric dodecyl alcohol polyoxyethylene ether and diisooctyl sulfosuccinate.
Comparative example 4
Specific composition of the flying agricultural adjuvant referring to example 4, the only difference is that sorbitol is replaced by an equal amount of water.
The following performance tests were performed on the flying control agricultural chemicals prepared in examples 1 to 4 and comparative examples 1 to 4:
(I) transpiration resistance
The anti-transpiration performance of the auxiliary agent is tested by a pendant drop method. At 25 ℃, a single droplet of 1 μ L was generated by a droplet generator on the video optical contact angle gauge OCA, the droplet was photographed at 1s intervals in hanging-drop mode, and the change in droplet volume with time was recorded, and the results are shown in table 1.
TABLE 1
From the results in Table 1, it is clear that the addition of the flight control agricultural chemicals of examples 1 to 4 of the present invention extended the evaporation time of water, and the evaporation time of the flight control agricultural chemicals of example 4 was extended by 22 seconds. The results show that the flying prevention agricultural auxiliary agent has obvious transpiration resistance; by replacing one or both of the components of the present invention with water, the anti-transpiration effect is reduced.
(II) resistance to drift
20% imidacloprid suspending agent is diluted into 200 times of liquid, 0.5% of the aviation control agricultural auxiliary agent of the examples and the comparative examples is added, spraying is carried out by using a Lechler ST110-01 spray head, and the volume median particle size of the fog drops is measured by adopting an OMEC laser particle size analyzer at a position 50cm below the spray head, and the result is shown in Table 2.
TABLE 2
| Auxiliary agent | Volume median particle diameter/. mu.m |
| 20% Imidacloprid SC diluent | 122.3 |
| Example 1 | 181.5 |
| Example 2 | 173.7 |
| Example 3 | 185.1 |
| Example 4 | 190.9 |
| Comparative example 1 | 149.7 |
| Comparative example 2 | 156.3 |
| Comparative example 3 | 158.7 |
| Comparative example 4 | 157.8 |
The larger the droplet size is, the less the droplet is likely to drift under the action of gravity. Droplets smaller than 150 μm are liable to drift, and droplets larger than 400 μm are liable to be ejected from the leaf surface although they are resistant to drift, and the deposition effect is deteriorated. The detection data in table 2 show that the volume median particle diameter of the droplets is increased by adding the flying prevention agricultural additive provided by the invention, so that the anti-drift performance of the droplets is improved. The flying agricultural adjuvant of example 4 had a volume median particle size increase of 56.1%. By reducing one or both components of the present invention, the droplet size is reduced.
(III) surface tension
20% imidacloprid suspending agent is diluted into 200 times of solution, 0.5% of the flying prevention agricultural auxiliary agent of the examples and the comparative examples is added, the surface tension of the solution is tested by a surface tension meter, and the test result is shown in table 3.
TABLE 3
| Auxiliary agent | Surface tension/(mN/m) |
| 20% Imidacloprid SC diluent | 59 |
| Example 1 | 31 |
| Example 2 | 32 |
| Example 3 | 35 |
| Example 4 | 30 |
| Comparative example 1 | 36 |
| Comparative example 2 | 37 |
| Comparative example 3 | 54 |
| Comparative example 4 | 36 |
From the results in table 3, it can be seen that the addition of the flying prevention agricultural adjuvant of the embodiments 1 to 4 of the present invention all reduces the surface tension of the liquid medicine, thereby reducing the bounce of the droplets on the surface of the plant when the liquid medicine is sprayed, improving the adhesion, wetting and spreading of the droplets on the surface of the plant and the retention of the pesticide, and improving the pesticide effect; by changing one or both of the components of the present invention to water, the ability to reduce surface tension is reduced, the retention of the pesticide is reduced, and the effect is deteriorated.
(IV) adhesion
Spraying cotton plots of 100 square meters by using an unmanned aerial vehicle, and transversely and longitudinally placing fog droplet collecting points at intervals of 30 cm. The use of the medicament: 20% imidacloprid suspension. Unmanned aerial vehicle flying speed: 5.5 m/s; flight height of the unmanned aerial vehicle: 1.5 meters from the top of the crop. After spraying cotton leaf surfaces for 4 hours, manually simulating rainfall by using an automatic spraying system in a medium rainfall mode, carrying out rainfall 1 hour (1 hour of cumulative rainfall is 5mm) on a test field, collecting 10 collection points (collecting effective components on the top surface, the middle surface and the bottom surface of crops at each collection point) in the test field, detecting the content of the effective components in the collection points by using a high performance liquid chromatograph, calculating the average value, calculating the percentage of the retention amount of the effective components on the collection points after rainfall, and obtaining the result shown in table 4.
TABLE 4
| Auxiliary agent | Original deposition amount of blade/(mu g/g) | Imidacloprid retention after 4h rainfall/% |
| Example 1 | 61 | 71 |
| Example 2 | 74 | 75 |
| Example 3 | 85 | 87 |
| Example 4 | 89 | 91 |
| Comparative example 1 | 54 | 32 |
| Comparative example 2 | 51 | 41 |
| Comparative example 3 | 32 | 35 |
| Comparative example 4 | 48 | 28 |
From the results in table 4, it can be seen that after rainfall simulation, the spray liquid medicine added with the flight control agricultural additives of examples 1 to 4 is obviously higher than the spray liquid medicine added with comparative examples 1 to 4, which indicates that the addition of the flight control agricultural additives of examples 1 to 4 of the present invention can improve the adhesion and rain resistance of the effective components in the liquid medicine droplets on the surfaces of crops, thereby reducing the dosage.
The results show that the prepared flying prevention agricultural auxiliary agent has the performances of transpiration resistance, drift resistance, wetting, adhesion and the like.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The flying prevention agricultural additive is characterized by comprising the following components in parts by weight: 5-30 parts of styrene-acrylic emulsion, 10-30 parts of polyoxyethylene polyoxypropylene polyether, 10-40 parts of fatty alcohol-polyoxyethylene ether, 5-20 parts of diisooctyl succinate sodium sulfonate and 5-20 parts of polyhydroxy compound.
2. The flying prevention agricultural additive as claimed in claim 1, which is characterized by comprising the following components in parts by weight: 20-30 parts of styrene-acrylic emulsion, 15-25 parts of polyoxyethylene polyoxypropylene polyether, 20-30 parts of fatty alcohol-polyoxyethylene ether, 10-15 parts of diisooctyl succinate sodium sulfonate and 5-15 parts of polyhydroxy compound.
3. The flying agricultural adjuvant according to claim 1 or 2, wherein the polyoxyethylene polyoxypropylene polyether is one or more of propylene glycol polyoxyethylene polyoxypropylene ether, glycerol polyoxyethylene polyoxypropylene ether, butanol polyoxyethylene polyoxypropylene ether, lauric acid polyoxyethylene polyoxypropylene ether and lauryl alcohol polyoxyethylene polyoxypropylene ether.
4. The flying prevention agricultural auxiliary agent as claimed in claim 1 or 2, wherein the fatty alcohol-polyoxyethylene ether is one or more of isomeric tridecanol polyoxyethylene ether, isomeric tridecanol polyoxyethylene ether and cetearyl alcohol polyoxyethylene ether.
5. The flying agricultural adjuvant according to claim 1 or 2, wherein the polyol is one or more of sorbitol, lactose, fructose, glucose, mannitol.
6. The preparation method of the flying agricultural auxiliary agent as claimed in any one of claims 1 to 5, which is characterized by comprising the following steps:
(1) adding the styrene-acrylic emulsion, the sodium diisooctyl succinate sulfonate and the polyhydroxy compound into a mixing kettle according to the weight, stirring and uniformly mixing;
(2) under the condition of stirring, adding polyoxyethylene polyoxypropylene polyether and fatty alcohol polyoxyethylene ether, stirring, and uniformly mixing.
7. The preparation method of the flying agricultural auxiliary agent as claimed in claim 6, wherein the stirring speed in the step (1) is 20-100r/min, the stirring time is 5-60min, and the stirring temperature is 10-50 ℃; the stirring speed of the step (2) is 20-100r/min, the stirring time is 10-60min, and the stirring temperature is 10-50 ℃.
8. The application of the flying prevention agricultural auxiliary agent in pesticide is characterized in that the flying prevention agricultural auxiliary agent is added into pesticide spraying liquid medicine for mixing and then spraying is carried out; the flying prevention agricultural auxiliary agent accounts for 0.1-3% of the pesticide spraying liquid medicine in mass.
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| CN111657276A (en) * | 2020-05-06 | 2020-09-15 | 南京威尔生物科技有限公司 | Flying prevention auxiliary agent and preparation method thereof |
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| EP3994985A1 (en) * | 2020-11-08 | 2022-05-11 | Bayer Aktiengesellschaft | Agrochemical composition with improved drift properties |
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