Abstract
In this strategy, liquid metal (LM) with a shiny metallic luster and an excellent optical property, was introduced as a novel metallic paint and coating to packing products and achieved decorative effects. We report a straightforward method via spray printing to fabricate a consecutive ultra-thin LM film on various product substrates. Then, the flexible LM film was coated with a transparent varnish layer, which was rather convenient for the LM paint to be storing, using and transporting. The thicknesses (25 µm) and the shapes of LM paint were well controlled. The flop index (FI=105), and reflectance (R=88.8%) data of the LM metallic paint were characterized. The results indicated that the LM metallic paint could provide a sparkling appearance and an abounding glossy. The deoxidized LM has a pronounced positive influence on the surface roughness, appearance, reflectance, and metallic texture. The LM metallic paint was highly desirable for potential applications in automotive enamel, motorcycle, toy and high-quality industrial coatings in the near future.
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