Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 15, Issue 4, Pages 3212-3217Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2015.9675
Keywords
Vertically Aligned Carbon Nanotube; Composite; Pre-Annealing Treatment; Thermal Performance; Cyclic Compression
Categories
Funding
- Natural National Science Foundation of China [51225602]
- National Basic Research Program [2010CB934700]
- Production and Research Collaborative Innovation Project of Jiangsu Province, China [BY2011178]
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Vertically aligned carbon nanotube (VACNT) array/polymer composite has already been recognized as a promising candidate for advanced thermal pad in thermal management of high-power electronic devices. However, the thermal conductive performance of this composite was limited by the quality of CNTs arrays. In this study, pre-annealing treatment was used to purify CNT arrays and improve thermal conductive performance of VACNT arrays/silicone composite. The thermal conductivity of the composite was enhanced by 34.52% and the thermal interface resistance was also reduced by 65.94% at a pre-annealing temperature of 490 degrees C for 5 min. The annealing process could remove some amorphous carbon and open the tips of CNTs. As a result, the interfacial compatibility in composite between carbon nanotube and polymer matrix was improved. The cyclic compression and tension performance of VACNT/S160 composite was investigated for further application.
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