How do pesticide emulsifiers improve the stability of pesticides?

1. Selection of emulsifier properties

The properties of emulsifiers have a direct effect on the stability of pesticides. When selecting an emulsifier, it is necessary to consider the HLB value, hydrophilic lipophilic balance, stability and compatibility with other pesticide ingredients. The right emulsifier can ensure the uniform dispersion of pesticides in water, thus improving their stability.

2. Emulsifier dosage control

The amount of emulsifier also has a significant effect on the stability of pesticides. Too little emulsifier may lead to uneven dispersion of pesticides, forming large oil droplets, affecting the spray effect; Too much emulsifier may increase the viscosity of pesticides, which is not conducive to spraying. Therefore, we need to precisely control the amount of emulsifier according to the nature of the pesticide and the purpose of use.

3. Dispersion phase concentration adjustment

The dispersed phase concentration refers to the concentration of the pesticide in the emulsifier. The dispersion state and stability of pesticides can be changed by adjusting the concentration of dispersed phase. In general, an appropriate increase in dispersed phase concentration can improve the stability of pesticides, but too high a concentration may lead to precipitation and stratification of pesticides.

4. The viscosity of dispersion medium increases

The stability of pesticide could be improved by increasing the viscosity of dispersing medium. Increased viscosity reduces collisions and mergers between oil droplets, allowing pesticides to be more evenly dispersed in the water. We can increase the viscosity of the dispersion medium by adding appropriate thickeners.

5. Storage temperature control

The storage temperature of pesticide has significant influence on its stability. While the emulsifier improves the stability of pesticides, it is also necessary to pay attention to the control of storage temperature. In general, pesticides should be stored in a cool, dry, ventilated place, away from direct sunlight and high temperatures.

6. Preparation method and emulsification equipment optimization

The preparation method and the choice of emulsifying instrument can also affect the stability of the pesticide. Optimization of preparation method and emulsifying apparatus can improve the dispersion effect and stability of pesticides.

7. Prevention of microbial contamination

Microbial contamination is an important factor affecting the stability of pesticides. In the process of pesticide preparation and use, we need to pay attention to prevent microbial contamination. For example, appropriate preservatives can be added to pesticides to inhibit the growth of microorganisms; At the same time, attention should also be paid to keeping the preparation environment clean and hygienic.