Experimental modeling of the spraying process polymer for creating coating layer to produce smart urea fertilizers
Corressponding author's email:
nguyenhuutrungtt@gmail.comKeywords:
biodegradable polymer, dimensional analysis, modelling, modified starch, mart urea fertilizer, spraying processAbstract
The objective of the study is to determine the experimental mathematical model of the spraying process biodegradable polymer solution in coating technology for production smart urea fertilizer (SUFs). This polymer is synthesized from phosphated distarch phosphate (PDSP), polyvinyl alcohol (PVA) and polyacrylic acid (PAA), which is low cost, environmentally friendly. By image analysis method, the obtained results show the width of spray area (cone form) mean (B) at fluid flow of 1.5 mLPM, pressure of 1.8 MPa, spray distance (L) is 30 cm, was 40 cm and the sauter mean diameter (SMD) of droplet (d32) was 0.638 mm. The experimental model was determined by dimensional analysis method and the least squares regression line. The model was also evaluated and compatible with experiment. In which, the droplet’s SMD (d32) was calculated according to 4 dimensionless number and can be applied to calculate and adjust the spraying process
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