Effect of Polymer Adjuvant Type and Concentration on Atomization Characteristics of Nozzle

Peng Hu, Ruirui Zhang (), Liping Chen, Longlong Li, Qing Tang, Wenlong Yan and Jiajun Yang
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Peng Hu: School of Mechanical and Electrical Engineering, Xinjiang Agricultural University, Urumqi 830052, China
Ruirui Zhang: School of Mechanical and Electrical Engineering, Xinjiang Agricultural University, Urumqi 830052, China
Liping Chen: Research Center of Intelligent Equipment, Beijing Academy of Agricultural and Forestry Sciences, Beijing 100097, China
Longlong Li: Research Center of Intelligent Equipment, Beijing Academy of Agricultural and Forestry Sciences, Beijing 100097, China
Qing Tang: Research Center of Intelligent Equipment, Beijing Academy of Agricultural and Forestry Sciences, Beijing 100097, China
Wenlong Yan: Research Center of Intelligent Equipment, Beijing Academy of Agricultural and Forestry Sciences, Beijing 100097, China
Jiajun Yang: School of Mechanical and Electrical Engineering, Xinjiang Agricultural University, Urumqi 830052, China

Agriculture, 2024, vol. 14, issue 3, 1-15

Abstract: (1) Background: Various types of adjuvants are added during application to enhance the spraying effect, but most adjuvant formulations are proprietary products, and their exact compositions have not been disclosed. (2) Methods: The spatial distributions of droplet sizes and velocities generated by the atomization of different polymer adjuvants were measured based on the phase Doppler interferometer (PDI) measurement method. The sub-area statistical method was used to quantitatively analyze the droplet characteristics at various points below the nozzle. (3) Results: The polymer (polyethylene oxide (PEO))/associative surfactant (sodium dodecyl sulfate (SDS)) can increase the droplet size and velocity of the solution after atomization by increasing the amount of the polymer/associative surfactant to reduce the equilibrium surface tension of the solution and increase the viscosity. Different concentrations of polymer/associative surfactant atomization produced larger droplet sizes and better uniformity than polymer/non-associative surfactant (polysorbate-20 (Tween20)). At the same position, the relationship between droplet velocities for the three adjuvant combinations was roughly as follows: PEO/SDS solution had the highest velocity, followed by PEO solution, and PEO/Tween20 solution had the lowest velocity. (4) Conclusions: The optimal of droplet size distribution can be achieved by adding appropriate amounts of associative surfactants to polymers.

Keywords: polymer adjuvant; atomization; nozzle; PDI (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2024
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