Effects of Tinuvin 292 on ageing-resistance properties of electromagnetic transparent coating
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https://doi.org/10.54939/1859-1043.j.mst.FEE.2023.223-229Keywords:
UV protection agent; Transparent electromagnetic; Tinuvin 292; Ageing resistance; Weather resistance.Abstract
The coating for the radar must satisfy the requirements of resistance to severe weather conditions while allowing electromagnetic waves to transfer almost completely. UV protection agents are added during the coating manufacturing process to limit the effects of ultraviolet rays in sunlight, improve colour fastness, and ensure the mechanical properties of the coating. In this paper, the author presents the results of a study to evaluate the effectiveness of the amine-based UV protection agent Tinuvin 292 under test conditions of colour difference ΔE (ASTM 2244), gloss loss (TCVN 2101: 2016) on samples of electromagnetic transparent coating (ETC) based on ester epoxy alkyd resin (EEA). Electromagnetic transparent coating with 2% Tinuvin 292 additive improves ageing resistance and weather resistance, ΔE = 2.15, gloss loss reached 12.1% at an angle of 60° while ensuring durability requirements mechanics, electrical properties, and electromagnetic transparency of coating film.
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