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Novel high-adhesion environment-friendly pesticide adjuvant as well as application and preparation method thereof

A pesticide adjuvant, high-adhesion technology, applied in the agricultural field, to achieve the effect of long action period, reduced splash loss, and reduced pollution

Active Publication Date: 2021-05-25
HANGZHOU NORMAL UNIV QIANJIANG COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the droplet flight process, its shape is always in a dynamic change process, so at the moment of its collision with the leaf surface, the migration time of the surfactant is longer than the collision time, which leads to the unsatisfactory application effect of the surfactant

Method used

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  • Novel high-adhesion environment-friendly pesticide adjuvant as well as application and preparation method thereof
  • Novel high-adhesion environment-friendly pesticide adjuvant as well as application and preparation method thereof
  • Novel high-adhesion environment-friendly pesticide adjuvant as well as application and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A preparation method of a novel high-adhesion environmental protection pesticide adjuvant formula is as follows:

[0034] Step 1: Add 60g of hydrogen-containing silicone oil (0.18%) and 6.0g of absolute ethanol into a four-neck flask, stir mechanically at a constant speed for 15 minutes, so that the hydrogen-containing silicone oil is evenly dissolved in ethanol, and gradually raise the temperature to 50°C. At 2°C / min, the speed of mechanical stirring is 600r / min.

[0035] Step 2: At 50°C, add a mixture of 4.98g of absolute ethanol and 7.78g of acrylic acid to the reaction system with a constant pressure funnel and stir at a rate of 1mL / min, with a mechanical stirring rate of 800r / min, and gradually increase the temperature Polymerization was started at 80°C. The heating rate was kept at 3°C / min,

[0036] Step 3: Add 3 mL of chloroplatinic acid (800 ppm) catalyst dropwise to the reaction system at a constant rate, and react for 3 hours to obtain a silicone emulsion. ...

Embodiment 2

[0041] A preparation method of a novel high-adhesion environmental protection pesticide adjuvant formula is as follows:

[0042] Step 1: Add 50g of hydrogen-containing silicone oil (0.5%) and 7.5g of absolute ethanol into a four-neck flask, stir mechanically at a constant speed for 15 minutes, so that the hydrogen-containing silicone oil is evenly dissolved in ethanol, and gradually raise the temperature to 50°C, and the heating rate remains At 2°C / min, the speed of mechanical stirring is 600r / min.

[0043] Step 2: At 50°C, add a mixture of 18.71g of absolute ethanol and 23.42g of acrylic acid to the reaction system with a constant pressure funnel and stir at a rate of 1mL / min, mechanical stirring at a rate of 800r / min, and gradually increase the temperature To 80°C, the polymerization reaction started. The heating rate was kept at 3°C / min.

[0044]Step 3: Add 3 mL of chloroplatinic acid (1000 ppm) catalyst dropwise to the reaction system at a constant rate, and react for 2....

Embodiment 3

[0049] A preparation method of a novel high-adhesion environmental protection pesticide adjuvant formula is as follows:

[0050] Step 1: Add 50g of silicone oil, hydrogen-containing silicone oil (0.36%), and 2.5g of absolute ethanol into a four-neck flask, stir mechanically at a constant speed for 15 minutes, so that the hydrogen-containing silicone oil is evenly dissolved in ethanol, and gradually raise the temperature to 50°C. Keep it at 2°C / min, and the speed of mechanical stirring is 600r / min.

[0051] Step 2: At 50°C, add a mixture of 12.44g of absolute ethanol and 15.56g of acrylic acid to the reaction system with a constant pressure funnel and stir at a rate of 1mL / min, mechanical stirring at a rate of 800r / min, and gradually increase the temperature To 80°C, the polymerization reaction starts. The heating rate was kept at 3°C / min.

[0052] Step 3: Add 3 mL of chloroplatinic acid (700 ppm) catalyst dropwise to the reaction system at a constant rate, and react for 3 ho...

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Abstract

The invention discloses a novel high-adhesion environment-friendly pesticide adjuvant as well as application and a preparation method thereof. The preparation method comprises the following steps: preparing an organic silicon emulsion by using hydrogen-containing silicone oil and acrylic acid through hydrosilylation, uniformly mixing an agricultural antibacterial agent ethylicin with the organic silicon emulsion, adding a dilute acetic acid solution of chitosan into the emulsion, and carrying out anion-cation crosslinking by using amino groups on the chitosan and carboxyl groups on the nontoxic and harmless organic silicon emulsion to achieve physical embedding of pesticide molecules, so as to form the chitosan / organic silicon composite micelle with a drug-loaded inner core. The pesticide adjuvant has a good high-adhesion function, can be quickly spread on tobacco leaves, greatly reduces the springback effect in the spraying process, effectively improves the utilization rate of a pesticide, and reduces the pollution of the pesticide falling into the soil to the soil environment. In addition, the preparation method of the pesticide adjuvant is simple, the pesticide adjuvant can be effective for multiple times after one-time pesticide application, the pesticide cost is effectively reduced, more importantly, the environmental pollution is reduced, and the green development concept is met.

Description

technical field [0001] The invention relates to the field of agricultural technology, and mainly relates to a high-adhesive, green and environment-friendly pesticide adjuvant formula and its application and preparation method. Background technique [0002] The hydrophobic / superhydrophobic waxy layer on the surface of plants can easily lead to low adhesion of water-based pesticides, resulting in a large rebound when the pesticide is sprayed, resulting in a large amount of pesticide waste and soil pollution. Weakening the rebound ratio and intensity of liquid droplets on the leaf surface is the main research idea to improve the utilization rate of pesticides. The current mainstream method is to improve the rebound of the liquid on the leaves by changing the liquid properties of the liquid, thereby increasing the amount of pesticide molecules attached to the leaves. This idea is mainly realized by the application of surfactants and wetting agents. However, due to the droplet f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/24A01N41/08C08G77/38
CPCA01N25/24A01N41/08C08G77/38Y02A50/30
Inventor 孙燕陈夏伟周时旭范秋瑾寿周翔许衡张尚文徐宇琪徐赞杰
Owner HANGZHOU NORMAL UNIV QIANJIANG COLLEGE
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