Enhancement of the thermal conductivity of aluminum oxide–epoxy terminated poly(dimethyl siloxane) with a metal oxide containing polysiloxane
- 868 Downloads
Aluminum oxide containing poly(dimethyl-methylvinyl)siloxane (PMDMS:Al2O3) was synthesized and blended with epoxy-terminated dimethylsiloxane (ETDS) to fabricate a thermally conducting composite. PMDMS:Al2O3 was added to provide interfacial interactions between the Al2O3 and polymer matrix. The PMDMS:Al2O3 containing composites revealed more enhanced thermal conduction properties because of the strengthened interfacial bonding at a fixed filler concentration. The conductivity as a function of the filler concentration was correlated with Agari’s models. Based on the coefficient obtained from Agari’s model, PMDMS:Al2O3 affected the formation of the conducting path in the composite. The results indicated that the presence of PMDMS:Al2O3 would help to establish a conducting path compared to compounds without it. All composites showed a decrease in thermal conductivity with increasing operating temperature. As expected, the PMDMS:Al2O3 containing composite (P-ETDS/Al2O3) showed more enhanced thermal conductivity than those without, regardless of the operating temperature.
KeywordsAl2O3 PDMS Polysiloxane DMAA Conducting Path
This study (Grant No. 000440680110) was supported by Business for Cooperative R&D between Industry, Academy, and Research Institute funded Korea Small and Medium Business Administration in 2010.
- 30.McGrath JE, Riffle JS, Banthia AK, Yilgor L, Wilkes GL (1983) An overview of the polymerization of cyclosiloxanes, initiation and polymerization. In: ACS Symposium Series No. 212, Chapter 2, WashingtonGoogle Scholar
- 31.Kang DH, Lee BC (2004) Polymer (Korea) 28:143Google Scholar
- 39.Meredith RE, Tobias CW (1962) Advances in electrochemistry and electrochemical engineering, vol 2. Wiley, New YorkGoogle Scholar
- 45.Markov AV (2008) Polym Sci Ser A 5:709Google Scholar