Research / 2021 / Article / Fig 5

Research Article

Significant Reduction of Interfacial Thermal Resistance and Phonon Scattering in Graphene/Polyimide Thermally Conductive Composite Films for Thermal Management

Figure 5

Relationship between (a) and (b) of rGO/PI and NH2-rGO/PI thermally conductive composite films vs. fillers’ mass fraction. Calculated ITR between fillers and PI matrix in rGO/PI and NH2-rGO/PI thermally conductive composite films (c). Relationship between (d) and (e) of rGO/PI and NH2-rGO/PI thermally conductive composite films vs. temperature. (f) and (g) of 15 wt% rGO/PI and 15 wt% NH2-rGO/PI thermally conductive composite films during 30 heating and cooling cycles. Infrared thermal images of pure PI film, 15 wt% rGO/PI, and NH2-rGO/PI thermally conductive composite films (h) and corresponding record of temperature rising ((i), with insert photograph of actual assembly of LED bulb and thermally conductive films).