These products are formulated with resin systems and pigmentation to meet 2604's five-year standard for gloss retention and color loss. The technology for the 2604 standard is typically a TGIC polyester or super-durable powder. Yes, there are powder formulas that can meet the American Architectural Manufacturers Association's standards (AAMA 2604-13). Can powder coatings meet AAMA 26 standards? What other pros and cons of powder versus liquid should we consider?Ī. We hear conflicting stories about the UV resistance of powder when compared to high-performance liquid coatings. We currently perform both liquid and powder coating on various parts and have been considering using more powder coatings on our architectural aluminum extrusions to reduce our VOCs (volatile organic compounds). The study has been published in Progress in Organic Coatings, Volume 179, June 2023.Q.

Moreover, the thermal behaviour of the composite powder coatings was preliminarily evaluated indicating that the introduction of graphene can improve heat dissipation. Impedance data were interpreted on the base of the electrical percolation theory in order to correlate the increase of capacitance and the decrease of the resistance to the existence of graphene-rich agglomerates in the composites coatings. Improved heat dissipationĪlthough barrier properties remain high over immersion times up to 35 days, a strong increase of coating capacitance and a decrease of coating resistance were observed by EIS for the coatings with graphene content above 1 wt%. This technique was also employed to obtain information about the electrical parameters of the coatings. The barrier properties were investigated by means of electrochemical impedance spectroscopy (EIS) in 0.1 M NaCl solution. Graphene contents up to 10 wt% were introduced in the composite powder coatings. The coatings were developed with a multifunctional approach in order to combine efficient barrier properties and high electrical and thermal conductivity.

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