An ultra-slippery transparent coating with waterproofing and heat dissipation functions for electronic devices

Abstract

Developing the coating with superior waterproofing and heat dissipation abilities can prevent electronics from contamination and heat damage. However, most of these coatings show poor transparency and antifouling ability. In this study, a multifunctional ultra-slippery transparent coating (STC) has been developed by simply spraying suspensions consisting of poly(perfluorodecyl acrylate-co-isobornyl acrylate) followed by the curing treatment at room temperature. The thickness of the coating is only 1.5 μm measured by scanning electron microscope. A high transparency of 90 % is observed by UV–vis–NIR. X-ray photoelectron spectroscopy and fourier transform infrared spectroscopy demonstrate successful formation of STC and explain low surface energy. The slippery surface makes the rapid sliding of water and oil droplets when tilted at only 8°. The surface of the coating can be cleaned by water and oil-based liquids due to its excellent slippery property. In addition, the heat dissipation of electronic devices was improved after coating STC. High transparency makes it easier to observe the working condition of precision equipment. Also, the STC protects the electronic components from short circuit destroying during for underwater operation. Therefore, the prepared STC shows great promise for various electronic devices due to its easy fabrication and versatile performance.