Microstructure evolution effect on high-temperature thermal conductivity of LDPE/BNNS investigated by in-situ SAXS
In: Materials Letters, Jg. 234 (2019), S. 74-78
Online
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Zugriff:
The low-density polyethylene (LDPE) and its composites incorporated boron nitride nanosheets (BNNS) (≤5 wt%) were fabricated and their thermal conductivities (K) as a function of temperature (20–80 °C) were measured. The K of the composite filled with 5 wt% BNNS increased 22% at room temperature and 48% at a high-temperature (below melting point) compared with pure LDPE. In order to reveal the enhancement mechanism for the high-temperature K of the composites, the microstructure evolution of the samples with temperature increasing was investigated by in-situ Small Angle X-ray Scattering (SAXS). The results show that the structural stability with temperature increasing and the lower interfacial thermal resistance are favorable for high-temperature K of the composites. This work provides a new recognition for the effect of microstructure evolution on high-temperature K of LDPE-based composites. It is hoped that the research will be instructive for enhancing K of LDPE-based composites by low-content doping and making them well-suited for the high-temperature practical applications.
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Microstructure evolution effect on high-temperature thermal conductivity of LDPE/BNNS investigated by in-situ SAXS
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Autor/in / Beteiligte Person: | Liu, Xiaoxu ; Li, Jialong ; Ji, Tianyi ; Su, Bo ; Zhao, He ; Feng, Yu ; Zhu, Congcong ; Li, Yanpeng ; Yue, Dong ; Liu, Yuanyuan ; Yin, Jinghua |
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Zeitschrift: | Materials Letters, Jg. 234 (2019), S. 74-78 |
Veröffentlichung: | Elsevier BV, 2019 |
Medientyp: | unknown |
ISSN: | 0167-577X (print) |
DOI: | 10.1016/j.matlet.2018.09.061 |
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