To balance the leveling performance and storage stability of TGIC system powder coatings,this paper studied the influence of polyester resin acid value,leveling agent type,powder particle size and distribution on the properties of powder coatings.The curing behavior and rheological behavior of powder coatings were analyzed using a gelatinizer and rheometer.The results indicate that the powder coating obtained with polyester resin B with an acid value of 26-30 mgKOH/g,leveling agent F,powder particle size of 30 pm,and narrow particle size distribution can achieve both high leveling and storage stability.The high leveling and storage resistant powder coating prepared in this article has lower melt viscosity,higher apparent activation energy,and better weather resistance compared to conventional powder coatings
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