1 research outputs found
Ultrahigh Thermal Conductivity of Assembled Aligned Multilayer Graphene/Epoxy Composite
The
exceptional thermal conductivity of graphene is expected to
endow polymer composites with ultrahigh thermal conductivities, which
can be even similar to those of some metals such as stainless steel
and aluminum alloy. The thermal conductivities of composites prepared
by dispersing multilayer graphene (MLG) in epoxy matrix increase only
by an order of magnitude over the pure epoxy. However, the improvement
has been limited since the large interfacial thermal resistance exists
between graphene and the surrounding epoxy. We have reported an extraordinary
increase in thermal conductivity of the MLG/epoxy composites through
the fabrication of the vertically aligned and densely packed MLG in
the epoxy matrix. The ultrahigh thermal conductivity of 33.54 W/(m
K) has been achieved in the aligned MLG/epoxy composite (AG/E). The
thermal conductivity of AG/E exhibits a positive temperature response
related to the aligned structure while increasing the temperature
from 40 °C to 90 °C