Formula of thermosetting epoxy powder coating

Formula table 1 epoxy resin (1007) 95 2 epoxy resin (828) 5 3 calcium carbonate (1.0-75 μ m) 50 4 chromium oxide (0.1-5.0 μ m) 2.05 2-methylimidazole 0.8 (1) The solid epoxy resin and solid cross-linking agent should be mixed evenly with the solid pigment and additive If necessary, all kinds of components should be pre comminuted (2) the key components with small amount of curing agent, accelerator and leveling agent must be mixed evenly (3) The ingredients in the whole formula should be evenly dispersed (4) The mixed dispersions are crushed or granulated according to the required particle size distribution, and then classified Note: the coating has a fluidity of grade 2 and adhesion of 235-245kg / cm2 The degreased soft steel plate is heated to 150 ℃, and then the coating is applied by flow impregnation or electrostatic flow impregnation method with the above coating The coating is hung and baked at 150 ℃ for 30min and cooled to film Note: each component is the number of quality parts