Enhancing Thermal Conductive Performance of Vertically Aligned Carbon Nanotube Array Composite by Pre-Annealing Treatment
| Autor: | Yi-Min Xuan, Hongyuan Chen, Hanxing Wei, Miao Wang, Minghai Chen, Qiang Li, Yajuan Xing, Qingwen Li |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
chemistry.chemical_classification
Materials science Annealing (metallurgy) Composite number Biomedical Engineering Bioengineering General Chemistry Carbon nanotube Polymer Condensed Matter Physics law.invention Thermal conductivity Amorphous carbon chemistry law Thermally conductive pad General Materials Science Composite material Electrical conductor |
| Zdroj: | Journal of Nanoscience and Nanotechnology. 15:3212-3217 |
| ISSN: | 1533-4880 |
| DOI: | 10.1166/jnn.2015.9675 |
| Popis: | 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 °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. |
| Databáze: | OpenAIRE |
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