Infrared radiation suppression and mechanical properties characterization of aluminum/glass/polysiloxane coatings

Abstract

Abstract The coatings (polysiloxane, flake aluminum, and glass powder) mechanical and infrared properties were analyzed in detail. The hardness, adhesion, surface roughness, SEM, and infrared thermal imager were used to evaluate the infrared radiation suppression and mechanical performance. The influences of coatings structure (pigment/adhesive ratio, function filler, and solvent content) on infrared emissivity were analyzed through theory and experiment. The coating hardness increased as the temperature increased due to the decomposition of the adhesive. The adhesion analysis showed an “M” type trend due to the functional powder and structure of the coating. Moreover, the coating infrared radiation suppression was also analyzed after thermal and chilling shock resistance.