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Preparation method of clay nano composite pesticide tribenuron-methyl slow-release material

A nano-composite, slow-release material technology, applied in botany equipment and methods, chemicals for biological control, animal repellents, etc., can solve the problems of affecting drug efficacy, large usage, drug damage, etc., to achieve Avoid the easy loss of pesticides, improve biological activity, and improve the effect of utilization

Inactive Publication Date: 2013-02-06
WUHAN UNIV OF TECH
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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

[0018] A preparation method of clay nanocomposite pesticide tribenuron-methyl slow-release material, it comprises the steps:

[0019] 1). Dissolve 99g of vegetable protein (soybean protein) in 891g of water (distilled water), and mechanically stir (300rpm) at room temperature (20°C) for 20min to obtain a vegetable protein solution;

[0020] Add 1g of attapulgite clay to 9g of water (distilled water) for ultrasonic dispersion (ultrasonic dispersion power 100W, ultrasonic frequency 40kHz, time 20min), wherein the particle size of attapulgite clay is 20-100nm (that is, nanoparticles ), then mechanically stirred to form a suspension (rotating speed 300rpm, 30min during rotation), to obtain a suspension containing attapulgite clay;

[0021] Add the suspension containing attapulgite clay 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 4...

Embodiment 2

[0026] A preparation method of clay nanocomposite pesticide tribenuron-methyl slow-release material, it comprises the steps:

[0027] 1). Dissolve 45g of vegetable protein (pea protein) in 55g of water (distilled water), and mechanically stir (300rpm) at room temperature (20°C) for 20min to obtain a vegetable protein solution;

[0028] Add 55g of attapulgite clay to 128g of water (distilled water) and ultrasonically disperse (ultrasonic dispersion power 200W, ultrasonic frequency 40 kHz, time 20min), wherein the particle size of attapulgite clay is 20-100nm (that is, nanoparticles ), then mechanically stirred to form a suspension (rotating speed 300rpm, 30min during rotation), to obtain a suspension containing attapulgite clay;

[0029] Add the suspension containing attapulgite clay 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 ...

Embodiment 3

[0034] According to the method of Example 1, the mass of attapulgite clay was replaced by 30 g, the mass of soybean protein was replaced by 70 g, and the mass of the pesticide tribenuron-methyl was replaced by 25 g.

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Abstract

The invention relates to a preparation method of clay nano composite pesticide slow-release material, in particular to a preparation method of clay nano composite pesticide tribenuron-methyl slow-release material, which is characterized in that an attapulgite clay stripping and inserting layer composite structure is formed by plant protein and attapulgite clay; the composite structure is mixed with pesticide tribenuron-methyl, and the obtained mixture is dried; and the nano composite pesticide tribenuron-methyl slow-release material can be obtained. As the pesticide tribenuron-methyl is embedded in an intermediate layer inside the attapulgite clay or stuck on the surface of the attapulgite clay, slow release of the pesticide can be realized. The material can control the pesticide to be slowly released, thus solving the problems of low utilization rate and poor effect of the pesticide, pollution caused by easy loss and the like.

Description

technical field [0001] The invention belongs to the technical field of agricultural medicines, and in particular relates to a preparation method of a clay nanocomposite pesticide slow-release 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. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/34A01N47/36A01P7/00
CPCA01N47/36
Inventor 黄进任红轩汪雪君余家会夏涛
Owner WUHAN UNIV OF TECH