Measurements of thickness and adhesive properties of electrostatic powder coatings for standard and modified powder coating guns

Measurements have been performed with different electrostatic powder coatin g systems to measure the electrostatic charging processes. The measurements consist of spraying a fixed mass of powder through a powder gun and then a nalysing the powder coating to determine the optimum parameters. The techni ques, which are presented, include (i) the absolute determination of the ch arge/mass ratio for a tribe gun, (ii) the analysis of a powder deposition o n a metalised glass substrate to determine the powder thickness and the adh esion of the powder to the substrate for standard and modified powder coati ng guns. (C) 2001 Elsevier Science B.V. All rights reserved.