Improving thermal conductivity of polyethylene/polypropylene by styrene-ethylene-propylene-styrene wrapping hexagonal boron nitride at the phase interface

Jing, Xinyi, Li, Yingchun, Zhu, Jiahua, Chang, Lei, Maganti, Srihari, Naik, Nithesh, Xu, Bin, Murugadoss, Vignesh, Huang, Mina and Guo, Zhanhu (2022) Improving thermal conductivity of polyethylene/polypropylene by styrene-ethylene-propylene-styrene wrapping hexagonal boron nitride at the phase interface. Advanced Composites and Hybrid Materials. ISSN 2522-0128 (In Press)

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Official URL: https://doi.org/10.1007/s42114-022-00438-x

Abstract

In this work, the percentage of polyethylene (PE) and polypropylene (PP) blend is controlled at 50:50 to make the composite by forming a co-continuous structure with hexagonal boron nitride (h-BN). The h-BN is wrapped by thermoplastic elastomer styrene-ethylene-propylene-styrene (SEPS). This approach enables the localized distribution of h-BN at the interface of the co-continuous structure of PE/PP blend and SEPS phases, allowing the construction of a heat conduction path in the SEPS phase, thereby improving the thermal conductivity of PE/PP. Theoretical calculation predicted the localized distribution of SEPS at the interface of the PE/PP blend to form a co-continuous composite structure. The thermal conductivity of the composites can be improved by 57.7% by adding 10 wt% h-BN, presenting a commercial potential of such composites in certain heat dissipation applications.

Item Type: Article
Uncontrolled Keywords: Phase interface, Co-continuous phase, Thermal conductivity, Hexagonal boron nitride
Subjects: H300 Mechanical Engineering
H700 Production and Manufacturing Engineering
H800 Chemical, Process and Energy Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Rachel Branson
Date Deposited: 07 Mar 2022 11:51
Last Modified: 07 Mar 2022 12:00
URI: http://nrl.northumbria.ac.uk/id/eprint/48621

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