Enhanced mechanical properties and thermal conductivity of polyimide nanocomposites incorporating individualized boron‑doped graphene
(주)코리아스칼라
- 최초 등록일
- 2023.04.24
- 최종 저작일
- 2020.08
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서지정보
ㆍ발행기관 : 한국탄소학회
ㆍ수록지정보 : Carbon letters / 30권 / 4호
ㆍ저자명 : Yu‑Mi Ha, Young Nam Kim, Young‑O Kim, Chan So, Jae‑Suk Lee, Jaewoo Kim, Yong Chae Jung
목차
Abstract
1 Introduction
2 Experimental
2.1 Synthesis and preparation of boron-doped graphene
2.2 Fabrication of graphene-reinforced PI nanocomposite film
2.3 Characterization
3 Results and discussion
3.1 Characterization of exfoliated boron-doped graphene
3.2 Characterization of B-graphenePI nanocomposites
4 Conclusions
Acknowledgements
References
영어 초록
Herein, we report significantly enhanced mechanical properties and thermal conductivity of polyimide (PI) by incorporating a small amount (0.01 wt %) of individualized boron-doped high-quality graphene as a filler. The boron-doped expandable graphite (B-EG) was synthesized by mixing boric acid ( H3BO4) with expandable graphite (EG) and thermally treating the mixture at 2450 °C for 30 min using a graphite furnace in an argon atmosphere. The boron-doped graphene (B-g) was prepared by the solution-phase exfoliation of B-EG with an ultrasonication process, which is a method to obtain individualized graphene as well as few-layer graphene. The PI nanocomposites were prepared using the obtained graphene. The PI nanocomposites synthesized with high-quality B-graphene (B-g) showed enhanced mechanical properties and thermal conductivity compared to those of pure PI due to the doping effects and strong interfacial interactions between graphene and the PI matrix.
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