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Charge dynamics and thermal properties of epoxy based micro and nano hybrid composites at high temperatures
Author(s) -
Chen Xiangrong,
Dai Chao,
Hong Zelin,
Awais Muhammad,
Paramane Ashish,
Tanaka Yasuhiro
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.50676
Subject(s) - materials science , composite material , epoxy , nano , thermal stability , glass transition , thermal , space charge , composite number , polymer , chemical engineering , electron , physics , quantum mechanics , meteorology , engineering
This paper presents the effects of the filler type and testing temperature on the charge dynamics and thermal properties of the epoxy resin. The micro‐nano hybrid composites with different content of the micro and nano aluminum nitride (AlN) fillers are fabricated. The morphology of micro‐nano hybrid composites is characterized. Electrical testing and thermal analysis methods are adopted to analyze its electrical and thermal performance. The results show that the space charge accumulation is suppressed and the charge decay process is facilitated in the hybrid composites. The electrical performances of the hybrid composites are enhanced by the nano‐fillers. The apparent mobility and activation energy are decreased with nano‐AlN fillers in the composites at the high temperature. The glass transition temperature and thermal stability of the materials is improved with the nano‐AlN. A hypothetical mechanism is proposed to explain the charge carrier injection and transport of the composites at different temperatures.