Preparation and Properties of a Reflective Organic-inorganic Composite High-energy Laser Ablative Coating

With phenolic resin and epoxy resin as binder and the single factor investigation method, the effects of high reflectivity heat-resisting packing materials of ZrO₂ and Al₂O₃ were investigated, respectively. The resistance to high energy laser ablation, holding time to laser ablation and the surface reflectivity before and after the irradiation were characterized. The surface morphologies before and after irradiation were compared by observation and XRD testing to observe the crystal form changes of the heat resistant packing materials.Resultsshowed that ZrO₂ had good resistance to high-energy laser ablation with the tolerance of the power density of high-energy laser irradiation up to 2.35 kW/cm², and that the surface reflectivity increased by 46.28% after laser irradiation.