논문 해외 국제전문학술지(SCI급) ANISOTROPIC THERMAL CHARACTERISTICS OF GRAPHENE-EMBEDDED POLYIMIDE COMPOSITE SHEETS
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2016
- 저자명 오민욱
- 학술지명 POLYMERS POLYMER COMPOSITES
- 발행처명 ISMITHERS
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 8
홈페이지논문 초록 (Abstract)
Polyimide-graphene (PIG) composites were prepared, and their thermal properties were characterized as films or sheets. Graphene loadings were controlled up to 8 wt.% or 12 wt.% in their composites. The graphenes used in this work were preparedby the chemical treatm ent of graphite. The as-prepared polyimide-graphene composites were the rmally characterized in films orsheets. The thermal conductivities of the PIG sheets were separately analyzed in both in-plane and out-of-pla ne directions. The thermal expansion coefficients (TECs) of the PI G composites slightly changed with the amount of graphene added t o the composites. The in-plane thermal conductivities were higher tha n the out-of-plane thermal conductivities, and the thermal conductivi ties of both directions proportionally increased with the graphene load ings in the PIG composites. The temperature-dependent stresses of the c omposite films monotonically decreased with the graphene loadings. The experimentally obtained thermal characteristics of the polyimide-graphene composites were compared and discus sed on the basis of the composite morphologies.