Effect of exfoliated graphite nanoplatelets on the fracture surface morphology and the electrical resistivity of phenylethynyl-terminated polyimide
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- 2015.03.25
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서지정보
ㆍ발행기관 : 한국탄소학회
ㆍ수록지정보 : Carbon Letters / 13권 / 2호
ㆍ저자명 : Donghwan Cho, Hiroyuki Fukushima, Lawrence T. Drzal
목차
1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusions
References
한국어 초록
In the present work, exfoliated graphite nanoplatelets (EGN) of 1 μm in average particle size,
which were prepared by heating at 900°C and then subjected to ultrasonic, ball-milling, and
vibratory ball-milling techniques, were uniformly incorporated into phenylethynyl-terminated
polyimide (PETI-5) resin. The fracture surface morphology and the electrical resistivity of the
EGN/PETI-5 composites were investigated. The results showed that the fracture surfaces and
the electrical resistivity strongly depended on the EGN content. The fracture surfaces became
more ductile and roughened with increasing EGN and the electrical resistivity was gradually
decreased with increased EGN loading, indicating the percolation threshold at 5 wt% EGN.
영어 초록
In the present work, exfoliated graphite nanoplatelets (EGN) of 1 μm in average particle size,which were prepared by heating at 900°C and then subjected to ultrasonic, ball-milling, andvibratory ball-milling techniques, were uniformly incorporated into phenylethynyl-terminatedpolyimide (PETI-5) resin. The fracture surface morphology and the electrical resistivity of theEGN/PETI-5 composites were investigated. The results showed that the fracture surfaces andthe electrical resistivity strongly depended on the EGN content. The fracture surfaces becamemore ductile and roughened with increasing EGN and the electrical resistivity was graduallydecreased with increased EGN loading, indicating the percolation threshold at 5 wt% EGN.
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