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Preparation method of high-suspension pesticide adhesive, pesticide adhesive and use method

A technology of high suspension and adhesion agent, applied in the agricultural field, can solve the problems of weak anti-scour ability, can not effectively solve the problem of efficient use of pesticides, etc., to achieve the effect of resisting scouring ability, reducing the loss of chemicals, and simple process

Inactive Publication Date: 2018-12-21
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing pesticide display technology has weak anti-scouring ability and cannot effectively solve the problem of efficient utilization of pesticides.

Method used

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  • Preparation method of high-suspension pesticide adhesive, pesticide adhesive and use method
  • Preparation method of high-suspension pesticide adhesive, pesticide adhesive and use method
  • Preparation method of high-suspension pesticide adhesive, pesticide adhesive and use method

Examples

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Effect test

Embodiment 1

[0031] The present embodiment has prepared a kind of high-suspension pesticide adhesion agent, and it comprises the following steps:

[0032] (1) Take 1L of ultrapure water, heat it to 60°C, add 10g of cetyl ammonium bromide to it, and stir for 20 minutes until the solid is fully dissolved; then add ammonia water with a mass fraction of 15% to it, and adjust the pH to 8;

[0033] (2) Add 10ml tetraethyl orthosilicate to the solution obtained in step (1), stir for 20h, make the system fully react, and obtain silicon dioxide and cetyltrimethylammonium bromide mixed solution;

[0034] (3) Heat the solution obtained in step (2) to 50° C., then add 3 g of polyvinyl alcohol, and stir for 10 h until uniformly mixed;

[0035] (4) calcining the solution obtained in step (3) at 520° C. for 4 hours, so that the size of the silica particles reaches 20-50 nm, and forms a porous structure to obtain a high-suspension pesticide adhesion agent, figure 1 Shown is the SEM image of silicon dioxi...

Embodiment 2

[0039] The present embodiment has prepared a kind of high-suspension pesticide adhesion agent, and it comprises the following steps:

[0040] (1) Take 1.5L of ultrapure water, heat it to 70°C, add 30g of cetyl ammonium bromide to it, stir for 30min until the solid is fully dissolved; then add ammonia water with a mass fraction of 18% to it, and adjust the pH to 10 ;

[0041] (2) Add 30ml tetraethyl orthosilicate to the solution obtained in step (1), stir for 25h, make the system fully react, and obtain silicon dioxide and cetyltrimethylammonium bromide mixed solution;

[0042] (3) Heat the solution obtained in step (2) to 60° C., then add 5 g of polyvinyl alcohol, and stir for 20 hours until uniformly mixed;

[0043] (4) calcining the solution obtained in step (3) at 540° C. for 6 hours, so that the size of the silica particles reaches 50-70 nm, and forms a porous structure to obtain a high-suspension pesticide adhesion agent, figure 2 Shown is the SEM image of silicon diox...

Embodiment 3

[0046] The present embodiment has prepared a kind of high-suspension pesticide adhesion agent, and it comprises the following steps:

[0047] (1) Take 2L of ultrapure water, heat it to 80°C, add 50g of cetyl ammonium bromide to it, and stir for 40 minutes until the solid is fully dissolved; then add ammonia water with a mass fraction of 20% to it, and adjust the pH to 9;

[0048] (2) Add 50ml tetraethyl orthosilicate to the solution obtained in step (1), stir for 30h, make the system fully react, and obtain silicon dioxide and cetyltrimethylammonium bromide mixed solution;

[0049] (3) Heat the solution obtained in step (2) to 70° C., then add 7 g of polyvinyl alcohol, and stir for 30 hours until uniformly mixed;

[0050] (4) calcining the solution obtained in step (3) at 560° C. for 8 hours, so that the size of the silica particles reaches 70-100 nm, and forms a porous structure to obtain a high-suspension pesticide adhesion agent, image 3 Shown is the SEM image of silicon ...

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Abstract

The invention discloses a preparation method of a high-suspension pesticide adhesive. The preparation method comprises the following steps of (1) adding cetyl trimithyl ammonium bromide powder to ultra pure water, performing stirring until the cetyl trimithyl ammonium bromide powder dissolves, and then regulating PH to 8-10; (2) adding tetraethyl orthosilicate to a solution obtained in the step (1), performing sufficient stirring, and then performing a reaction so as to obtain a silicon dioxide and cetyl ammonium bromide mixed solution; (3) adding polyvinyl alcohol to the solution obtained inthe step (2), and performing stirring until the polyvinyl alcohol dissolves; and (4) performing calcination on a solution obtained in the step (3) at 520-560 DEG C so that the size of silicon dioxidegranules reaches the nanometer level, a porous structure is formed, and the high-suspension pesticide adhesive is obtained. The invention further discloses the high-suspension pesticide adhesive and ause method thereof. The preparation method disclosed by the invention has the advantages that the pesticide adhesive can effectively improve the adhesion force of medicaments on plant leaf surfaces,improve application effects, reduce medication quantity and reduce pollution to environment.

Description

technical field [0001] The invention belongs to the technical field of agriculture, and in particular relates to a preparation method of a high-suspension pesticide adhesion agent, a pesticide adhesion agent and a use method. Background technique [0002] Traditional pesticides are easily lost and degraded under the effects of wind, sun, and rain, resulting in short duration of action and low utilization rate, requiring repeated large-scale spraying, which not only increases production costs, but also causes serious damage to soil and water bodies. Pollution, leading to an imbalance in the ecosystem. [0003] At present, the high-efficiency pesticide utilization technologies mainly include slow-release and development technologies. Pesticide slow-release agents are mainly divided into physical and chemical types. The former is mainly formed by the physical combination between the polymer compound and the original drug, which includes microcapsules, homogeneous bodies, incl...

Claims

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Application Information

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IPC IPC(8): A01N25/04A01N25/30
CPCA01N25/04A01N25/30
Inventor 吴正岩蔡冬清张桂龙
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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