Azoxystrobin microcapsule suspending agent forairplane spray pesticide control as well as preparation device and preparation method thereof
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A technology for microcapsule suspensions and preparation devices, which is applied in botany equipment and methods, chemicals for biological control, fungicides, etc., and can solve the problems of easy aggregation of microcapsules, blockage of nozzles, and poor dispersion. Achieve good dispersion, reduce drug damage, and good stability
Pending Publication Date: 2021-03-26
JIANGYIN SULI CHEM
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It adopts the in-situ polymerization method to prepare microcapsule suspension, the microcapsules are easy to agglomerate, the dispersion is poor, and the phenomenon of clogging the nozzle is easy to occur during the spraying process
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Embodiment 1
[0046] A preparation device for azoxystrobin microcapsule suspensions for flight prevention, comprising an oil phase feeding kettle 1 and a water phase feeding kettle 2, the oil phase feeding kettle 1 is connected to a pipeline shearer through an oil phase flow pump 3 5. The water-phase feeding kettle 2 is connected to the pipeline shearer 5 through the water-phase flow pump 4, the pipeline shearer 5 is connected to the finished product kettle 6, and the water-based capsule material kettle 8 is flowed through the water-based capsule material. The pump 7 is connected to the finished product kettle 6 .
[0047] Further, the oil phase feeding kettle 1, the water phase feeding kettle 2, the finished product kettle 6, and the water-based capsule material kettle 8 are all equipped with stirring devices.
[0048] The mass ratio of each component of 10% azoxystrobin microcapsule suspension is as follows:
[0049] Azoxystrobin technical (98.0%): 1020g
[0050] Ethyl acetate (organic ...
Embodiment 2
[0071] The mass ratio of each component of 15% azoxystrobin microcapsule suspension is as follows:
[0084] A kind of preparation method of the 10% azoxystrobin microcapsule suspension concentrate that is used for flying defense, comprises the steps:
[0085] (1) Add 3300g of ethyl acetate into the oil phase feeding kettle, start stirring, add 1531g of azoxystrobin active d...
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Abstract
The invention relates to an azoxystrobin microcapsule suspending agent for airplane spray pesticide control as well as preparation device and preparation method thereof. The preparation method comprises the following steps: adding an organic solvent, azoxystrobin technical and an oily capsule material into an oil-phase feeding kettle, and stirring until the materials are dissolved; adding deionized water, a dispersing agent, an emulsifying agent and a defoaming agent into a water-phase feeding kettle, and uniformly stirring; respectively conveying the oil phase and the water phase to a pipeline type shearing machine, shearing to form emulsion, and transferring to a finished product kettle; stirring deionized water and a water-based capsule material in a water-based capsule material kettleuntil the water-based capsule material is dissolved; dropwise adding a water-based capsule material solution into an emulsion of the finished product kettle for polymerization reaction; and then adding an auxiliary agent and uniformly stirring to obtain a finished product. The oil-phase material and the water-phase material are respectively added into the pipeline type shearing machine at the sametime, the oil-phase material and the water-phase material are sheared at the same time by adjusting the flow, and the shearing rotating speed is controlled, so that the particle size of the microcapsule is distributed within a certain range, the microcapsule has excellent drifting resistance, and the lasting period of azoxystrobin is remarkably prolonged; the situation that azoxystrobin easily generates phytotoxicity is avoided.
Description
technical field [0001] The invention belongs to the technical field of pesticide dosage form processing, and in particular relates to an azoxystrobin microcapsule suspension for flying control, a preparation device and a preparation method thereof. Background technique [0002] Azoxystrobin is a methoxyacrylate fungicide, which mainly inhibits the mitochondrial respiration of pathogenic fungi, so that the mitochondria of pathogenic fungi cannot produce and provide the energy (ATP) required for normal cell metabolism, eventually leading to cell death. Azoxystrobin has wide bactericidal activity and is effective against almost all fungal diseases (Ascomycotina, Basidiomycotina, Flagellate and Deuteromycotina) diseases, such as powdery mildew, rust, glume blight, net spot , downy mildew, and rice blast all have good activity. It has protective, therapeutic, penetrating and systemic activities, and is mainly used for cereals, rice, peanuts, grapes, potatoes, fruit trees, vegeta...
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