Study On Application Of High Powder Utilization And High Decorative Aluminum Powder Coating

Powder coating is a new type of solvent-free 100% solid powder coating.It has the characteristics of no solvent,no pollution,recyclable,environmental protection,energy saving and resources,reducing labor intensity and high film mechanical strength.Special powder coatings for aluminium profile,Usually is polyester powder coatings.Mainly used for the coating of aluminum alloy doors and windows of outdoor construction.However,the aluminum powder coating generally has defects such as low powder utilization,poor levelling property,etc.Affects its wide application.In this paper,the resin piecing method,screening optimization of additives,improved production process,etc.,A high powder utilization,high decorative aluminum powder coating was prepared.In this paper,the screening of polyester powder coatings formula polyester resin and curing agent,filler and additives,the powder coating of high powder utilization,high decorative aluminum extrusion was obtained.By matching the resin with the same reaction mechanism but different physical and chemical indexes,And the selection of different fineness fillers and the optimization of leveling agent dosage,Improve the effect of leveling the appearance leveling,Solve the film leveling and particle problem.polyester powder coatings in addition to the adjustment of the production process,By the use of additional agent in common use,the problem of the powder particle floating or particle size of the powder particle caused by the smaller particle size in the product is solved,The powder utilization is improved.