In agricultural production,the use of pesticides is indispensable.However,during the spraying process of pesticides,a large amount of foam is often produced,which not only affects the coverage effect of pesticides,but may also have an impact on the environment and human health.So,how to effectively eliminate these bubbles? First,let's analyze what are the causes of pesticide foaming?
First of all, in order to improve the performance and effect of pesticides,a certain amount of chemical additives are often added. Most of these additives are surfactants. These substances can reduce the tension of the liquid surface, causing many bubbles to gather on the liquid surface to form foam. Secondly, during the production, processing and spraying of pesticides, the stirring operation of mechanical equipment causes the influx of a large amount of air, thus forming foam. In addition, pesticides contain many chemical components, and these components react chemically with each other, which can also cause foam. The ingredients in some pesticides may produce gases, which are gradually released in the liquid to form bubbles. In addition, changes in the external temperature environment are also an important influencing factor. In high-temperature environments, the chemical components in pesticides are more active and can easily Create foam.
The existence of foam will have many adverse effects on the effectiveness of pesticides: foam will reduce the uniformity of pesticide dispersion, resulting in the inability to cover a large area of crops during spraying, making spraying operations difficult. On the other hand, too much foam will affect the continuous spraying of pesticides, reduce the efficacy of pesticides, and lead to quality problems. Finally, the foam will remain on the surface and roots of the crops, causing the crops to be unable to absorb the medicinal effects well and endangering the normal growth of the crops.
After adding pesticide defoamer, the main reason why the foam disappears is that the defoaming agent can destroy or inhibit the stable factors of foam formation. Pesticide defoamers mainly eliminate foam through the following aspects: reducing the surface tension of the liquid and making the liquid film locally thinner, thus destroying the stability of the foam. Disperse the air on the surface of the liquid to prevent air from entering the liquid again. The viscosity of the liquid surface increases, preventing movement between liquid molecules and reducing the formation of foam. When these conditions are met, defoaming agents can effectively eliminate foam in pesticides.
Pesticide defoamers effectively eliminate foam in pesticides by destroying the stable structure of the foam and reducing the surface tension of the liquid. However, the use of defoaming agents also needs to be moderate. Excessive defoaming agents may affect the effectiveness of pesticides. Therefore, when using defoaming agents, appropriate adjustments need to be made according to specific circumstances.
