| Low Infrared Emissivity Coating based on Fine Al Powder / Acrylic Resin Composite Coatings |
| Paper ID : 1163-ASAT19 (R3) |
| Authors: |
|
Hesham Ramzy Tantawy 1, Mahmoud Abd Elhay Metwaly1 *2, Ebtesam Ateia3 1Military Technical College, Ismail Al Fangari, El-Qobba Bridge, Cairo 2Technical Research Centre of the Egyptian Armed Forces 3Physics Department, Faculty of Science, Cairo University, Giza, Egypt |
| Abstract: |
| Low emissivity coatings were synthesized by using fine Al powder (highly flake) particles and acrylic resin as pigments and binders, respectively. In the present work, ball milling was utilized to prepare Al nano flake, the ratio between Al and balls during the preparation period is constant to achieve the nano-flake size. The technical parameters of Al raw/nano sizes flake Cu powders are characterized by Scanning Electron Microscope (SEM), X-Ray diffraction (XRD), and Energy Dispersive X-Ray Analysis (EDX). The impact parameters that affect the emissivity of the coating such as coating thickness, particle size, spin coating, ball milling time and the content of coated Al powder were systematically studied. The thermal signature is highly affected by the variation in Al content (5%, 20%, 25%, 35%, 40% and 60%) at different temperatures (50ºC, 70ºC, 90ºC). The results indicate that the perfect percentage for the filler (Al) in the matrix within the range (35 wt. % to 40 wt. %) and Al (fine powder) highly flake particle at content 30 wt. % gives the lowest infrared emissivity of 0.385 µm and 0.412 µm for (3-5) µm, (8-12) µm respectively. |
| Keywords: |
| Low emissivity surfaces; ball milling time; spin coating, thermal signature; nano-flake size. |
| Status : Conditional Accept (Oral Presentation) |
