Impact of aluminum oxide nanopowder on thermal,optical and surface properties of polysiloxane-aluminum oxide composites as elastomeric thermal pad for light emitting diode application |
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| Authors: | J Vishnu Chandar S Shanmugan D Mutharasu M Khairudin K I K Marsilla A A Azlan |
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| Affiliation: | 1. School of Mechanical Engineering, Universiti Sains Malaysia (USM), Nibong Tebal, Malaysiavishnuchandar.j@gmail.com;3. School of Physics, Universiti Sains Malaysia (USM), Minden, Malaysia;4. Materials Center of Excellence (MCoE), Packaging Engineering, Western Digital Corporation, Malaysia;5. School of Mechanical Engineering, Universiti Sains Malaysia (USM), Nibong Tebal, Malaysia;6. School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia (USM), Nibong Tebal, Malaysia;7. School of Physics, Universiti Sains Malaysia (USM), Minden, Malaysia https://orcid.org/0000-0002-7977-4249 |
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| Abstract: | ABSTRACTVirgin 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. |
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| Keywords: | Polysiloxane aluminum oxide LED T3Ster thermal conductivity surface UV absorption |
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https://orcid.org/0000-0002-7977-4249