Journal
POLYMER COMPOSITES
Volume 33, Issue 9, Pages 1473-1481Publisher
WILEY
DOI: 10.1002/pc.22277
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Funding
- National Natural Science Foundation [50873007]
- Beijing Natural Science Funds [2082019]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT0807]
- State Key Laboratory of Polymer Materials Engineering in Sichuan University [KF200902]
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Hexagonal boron nitride (h-BN) fillers were first coated with low-molecular-weight polydimethylsiloxane (PDMS) by solution dispersion and then treated in argon plasma for different times. The modified h-BN fillers were characterized by high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, and contact angle analysis. The results revealed that a thin PDMS film several nanometers thick was tightly coated on the surface of the h-BN filler after plasma treatment, and this thin film could not be removed by 48 h Soxhlet extraction with n-hexane at 120 degrees C. Furthermore, the effect of plasma modification on the h-BN filled silicone rubber composites was investigated. The results indicated that the plasma modification improved the interfacial interaction between h-BN and the matrix, but hardly affected the distribution state of the h-BN in the composites. The composites filled with the modified h-BN exhibit significantly higher thermal conductivity than the composites filled with untreated h-BN. POLYM. COMPOS., 2012. (c) 2012 Society of Plastics Engineers
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