TY - GEN
T1 - Effects of surface-modification on properties of Graphene/Epoxy composites
AU - Yu, Shihu
AU - Li, Shengtao
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/7/14
Y1 - 2017/7/14
N2 - Among all the carbon fillers, graphene has attracted tremendous research interest for its special two-dimensional and single-Atom-Thick structure. High electrical, mechanical and optical properties of graphene have been proved. By adding graphene as filler into polymer, it is possible to achieve a new composite with unique physical, electrical and thermal properties. In this paper, epoxy/graphene composites with or without silane coupling agent surface modification have been prepared using sol-gel method. Researches have proved that graphene can improve the properties of composite at a very low loading content. The content of graphene in this paper was selected as 0.1wt%. Dispersion of graphene in epoxy was observed by polarizing optical microscope (POM) and scanning electron microscope (SEM). Results proved that after surface modification, graphene was dispersed better in epoxy. Thermal properties of epoxy were obtained by means of differential scanning calorimetry tests (DSC). Results showed that even with very low content of graphene, the glass-Transition temperature of composite increased, indicating better thermal properties. Conductivity in various electric fields of composites and dc surface flashover voltages were obtained, showing that though the surface conductivity of composite increased, surface flashover properties didn't decrease. Graphene/epoxy composites with excellent properties were expected to be a potential candidate for smaller insulation system.
AB - Among all the carbon fillers, graphene has attracted tremendous research interest for its special two-dimensional and single-Atom-Thick structure. High electrical, mechanical and optical properties of graphene have been proved. By adding graphene as filler into polymer, it is possible to achieve a new composite with unique physical, electrical and thermal properties. In this paper, epoxy/graphene composites with or without silane coupling agent surface modification have been prepared using sol-gel method. Researches have proved that graphene can improve the properties of composite at a very low loading content. The content of graphene in this paper was selected as 0.1wt%. Dispersion of graphene in epoxy was observed by polarizing optical microscope (POM) and scanning electron microscope (SEM). Results proved that after surface modification, graphene was dispersed better in epoxy. Thermal properties of epoxy were obtained by means of differential scanning calorimetry tests (DSC). Results showed that even with very low content of graphene, the glass-Transition temperature of composite increased, indicating better thermal properties. Conductivity in various electric fields of composites and dc surface flashover voltages were obtained, showing that though the surface conductivity of composite increased, surface flashover properties didn't decrease. Graphene/epoxy composites with excellent properties were expected to be a potential candidate for smaller insulation system.
UR - https://www.scopus.com/pages/publications/85027854971
U2 - 10.1109/ICEMPE.2017.7982136
DO - 10.1109/ICEMPE.2017.7982136
M3 - 会议稿件
AN - SCOPUS:85027854971
T3 - ICEMPE 2017 - 1st International Conference on Electrical Materials and Power Equipment
SP - 490
EP - 493
BT - ICEMPE 2017 - 1st International Conference on Electrical Materials and Power Equipment
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 1st International Conference on Electrical Materials and Power Equipment, ICEMPE 2017
Y2 - 14 May 2017 through 17 May 2017
ER -