Premium
Novel heat‐conductive composite silicone rubber
Author(s) -
Zhou Wenying,
Qi Shuhua,
Tu Chunchao,
Zhao Hongzhen
Publication year - 2007
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.25479
Subject(s) - silicone rubber , materials science , composite material , thermal stability , thermal conductivity , composite number , silicone , electrical conductor , thermal expansion , natural rubber , chemical engineering , engineering
The silicone rubber with good thermal conductivity and electrical insulation was obtained by taking vinyl endblocked polymethylsiloxane as basic gum and thermally conductive, but electrically insulating hybrid Al 2 O 3 powder as fillers. The effects of the amount of Al 2 O 3 on the thermal conductivity, coefficient of thermal expansion (CTE), heat stability, and mechanical properties of the silicone rubber were investigated, and it was found that the thermal conductivity and heat stability increased, but the CTE decreased with increasing Al 2 O 3 fillers content. The silicone rubber filled with hybrid Al 2 O 3 fillers exhibited higher thermal conductivity compared with that filled with single particle size. Furthermore, a new type of thermally conductive silicone rubber composites, possessing thermal conductivity of 0.92 W/mK, good electrical insulation, and mechanical properties, was developed using electrical glass cloth as reinforcement. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 104: 2478–2483, 2007