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ABSTRACT Virgin polysiloxane and aluminum oxide nanopowder (10%–50%) reinforced polysiloxane composite films were prepared and its thermal, optical, surface properties were investigated. Polysiloxane/aluminum oxide (Al2O3) (50%–50%) composite film sample exhibit… Click to show full abstract
ABSTRACT Virgin polysiloxane and aluminum oxide nanopowder (10%–50%) reinforced polysiloxane composite films were prepared and its thermal, optical, surface properties were investigated. Polysiloxane/aluminum oxide (Al2O3) (50%–50%) composite film sample exhibit high thermal conductivity (k – 0.26 W/mK) and UV absorption, decreased junction temperature (ΔTJ = 25.69°C at 700 mA) and thermal resistance (∆Rth-tot = 12.41 K/W at 700 mA) compared to virgin polysiloxane film. Overall, the prepared composites can be used as an alternate elastomer thermal pad for efficient thermal management as well as UV blocking encapsulant for future UV-free LED application development. Graphical Abstract
Journal Title: Polymer-Plastics Technology and Materials
Year Published: 2020
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