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Enhanced Thermal Conductivity of Silicone Composites Filled with Few-Layered Hexagonal Boron Nitride
| Content Provider | MDPI |
|---|---|
| Author | Cheng, Wei-Cheng Hsieh, Yi-Ting Liu, Wei-Ren |
| Copyright Year | 2020 |
| Description | In this study, we demonstrate the use of silicone/few-layered hexagonal boron nitride (FL-hBN) composites for heat dissipation applications. FL-hBN is synthesized via a green, facile, low-cost and scalable liquid exfoliation method using a jet cavitation process. The crystal structures, surface morphologies and specific surface areas of pristine h-BN and FL-hBN were characterized by XRD, SEM, TEM and AFM (atomic force microscopy). The results confirmed that FL-hBN with a thickness of ~4 nm was successfully obtained from the exfoliation process. In addition, we introduced both pristine h-BN and FL-hBN into silicone with different ratios to study their thermal properties. The results of the laser flash analysis indicate that the silicon/FL-hBN composite exhibited a higher thermal conductivity than that of the silicone/h-BN composite. With the optimal loading content of 30 wt.% FL-hBN content, the thermal conductivity of the composite could be enhanced to 230%, which is higher than that of silicone/h-BN (189%). These results indicate that jet cavitation is an effective and swift way to obtain few-layered hexagonal boron nitride that could effectively enhance the thermal conductivity of silicone composites. |
| Starting Page | 2072 |
| e-ISSN | 20734360 |
| DOI | 10.3390/polym12092072 |
| Journal | Polymers |
| Issue Number | 9 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-09-12 |
| Access Restriction | Open |
| Subject Keyword | Polymers Manufacturing Engineering Coatings and Films Hexagonal Boron Nitride Jet Cavitation Silicone Thermal Conductivity |
| Content Type | Text |
| Resource Type | Article |
