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Highly thermally conductive room‐temperature‐vulcanized silicone rubber and silicone grease
Author(s) -
Wang Qian,
Gao Wei,
Xie Zemin
Publication year - 2003
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.12363
Subject(s) - vulcanization , materials science , composite material , silicone rubber , volume fraction , silicone oil , filler (materials) , viscosity , silicone , thermal conductivity , natural rubber
In this study, the effects of thermally conductive filler type (α‐Al 2 O 3 , SiC), volume fraction of the filler, and filler particle size distribution on the thermal conductivity and viscosity of room‐temperature‐vulcanized (RTV) silicone rubber and silicone grease were investigated. We were interested to find that silicone grease (or the RTV silicone rubber) had a maximum thermal conductivity (∼1.48 W/mK) and a minimum viscosity (∼3.4 × 10 4 mPa s), with a definite total volume fraction of the filler (0.55) when the distribution of filler sizes (the number ratio of two different particles sizes, i.e., 0.8 and 6 μm) was 600–700. We were able to increase the thermal conductivity of the RTV silicone rubber and silicone grease beyond 2 W/mK by increasing the total volume fraction of the filler with adequate filler size distributions. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 2397–2399, 2003