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Method for preparing rectorite nanocomposite pyraflufen-ethyl material

A technology for compounding pyrazafen and rectorite, which is applied in botany equipment and methods, herbicides and algicides, chemicals for biological control, etc., and can solve the problems of affecting drug efficacy, easy precipitation, and phytotoxicity, etc. problems, to achieve the effect of avoiding the easy loss of pesticides, improving bioavailability, and avoiding the consequences of pollution

Active Publication Date: 2011-07-06
SHANDONG CYNDA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing pesticide formulations in my country are mainly two types: emulsifiable concentrate (EC) and wettable powder (WP). Among them, emulsifiable concentrate (EC) and wettable powder (WP) account for a large proportion, which contains a large amount of organic solvents, causing a large waste of petroleum resources and seriously polluting the environment; WP requirements The quality of the wetting agent is good, if the suspension is not good, it is easy to precipitate, affecting the efficacy or causing injury
In addition, the existing pesticides still have disadvantages such as large amount of use, poor control effect, and narrow control range.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A preparation method of rectorite nanocomposite pesticide metazachlor slow-release material, it comprises the following steps:

[0017] 1). Dissolve 1.5g of vegetable protein (soybean protein) in 7.5g of water (distilled water), and mechanically stir (300rpm) at room temperature (20°C) for 20 minutes to obtain a vegetable protein solution;

[0018] 8.5g rectorite was added to 85g of water (distilled water) for ultrasonic dispersion (ultrasonic dispersion power 100W, ultrasonic frequency 40 kHz, time 20min), then mechanically stirred to form a suspension (rotating speed 300rpm, time 30min) to obtain Suspension of rectorite;

[0019] Add the rectorite-containing suspension to the vegetable protein solution, and vigorously stir mechanically (800 rpm) at room temperature for 12 hours to obtain a mixed system; then dry the mixed system (dry at a temperature of 80°C for 48 hours) to obtain a complex (wherein the rectorite is exfoliated or intercalated, or called rectorite na...

Embodiment 2

[0023] A preparation method of rectorite nanocomposite pesticide metazachlor slow-release material, it comprises the following steps:

[0024] 1). Dissolve 5.5g of vegetable protein (pea protein) in 55g of water (distilled water), and mechanically stir (300rpm) at room temperature (20°C) for 20 minutes to obtain a vegetable protein solution;

[0025] 4.5g rectorite was added to 22.5g of water (distilled water) for ultrasonic dispersion (ultrasonic dispersion power 200W, ultrasonic frequency 40 kHz, time 20min), then mechanically stirred to form a suspension (rotating speed 300rpm, time 30min) to obtain Suspensions containing rectorite;

[0026] Add the rectorite-containing suspension to the vegetable protein solution, and vigorously stir mechanically (800 rpm) at room temperature for 12 hours to obtain a mixed system; then dry the mixed system (dry at a temperature of 80°C for 48 hours) to obtain a complex (wherein the rectorite is exfoliated and intercalated, that is, a rect...

Embodiment 3

[0030] According to the method of Example 1, the mass of rectorite was replaced by 5.0 g, the mass of soybean protein was replaced by 5.0 g, and the mass of pesticide metazachlor was replaced by 1.0 g.

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PUM

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Abstract

The invention relates to a method for preparing a rectorite nanocomposite pesticide slow-release material. The method for preparing the rectorite nanocomposite pesticide pyraflufen-ethyl slow-release material is characterized by comprising the following steps of: making a rectorite intercalated structure by using plant proteins and rectorite; and drying after mixing the rectorite intercalated structure and pesticide pyraflufen-ethyl to obtain the rectorite nanocomposite pesticide pyraflufen-ethyl slow-release material. Because the pesticide pyraflufen-ethyl is embedded into an interlayer in the rectorite or is adhered to the surface of the rectorite, the slow release of a pesticide is realized. By using the method, the slow release of the pesticide is controlled, so that the problems of low pesticide utilization ratio, poor effect, pollution caused by easy loss and the like are solved.

Description

technical field [0001] The invention belongs to the technical field of agricultural medicines, and in particular relates to a preparation method of a rectorite nanocomposite pesticide material. Background technique [0002] Pesticides are widely used in agriculture as insecticides and herbicides, and play an important role in the stable production of food all over the world. Except for a few pesticides with high volatility and high solubility in water, which can be used directly, most of them must be processed into preparations before they can be used. The existing pesticide formulations in my country are mainly two types: emulsifiable concentrate (EC) and wettable powder (WP). Among them, emulsifiable concentrate (EC) and wettable powder (WP) account for a large proportion, which contains a large amount of organic solvents, causing a large waste of petroleum resources and seriously polluting the environment; WP requirements The quality of the wetting agent is good. If the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/08A01N43/56A01P13/00
Inventor 任红轩余家会黄进王现全
Owner SHANDONG CYNDA CHEM