Abstract
AbstractConstruction of particle network is the most effective strategy for polymer composites with high thermal conductivity. However, the disadvantages of this strategy, such as high particle concentration, complex preparation process, weak mechanical properties or thermodynamic instability, still limit the application. The heat transfer mechanism of polymer composites without particle network remains unclear. In this work, for exploring the heat transfer path of polymer composites without particle network, polymer composites are designed with spherical SiO2 particles grafted by 3D crosslinked organosilicone matrix, to minimize influence of interfacial thermal resistance and crystallization. Combining experiment, theoretical models and coarse‐grained molecular dynamics simulations, it is concluded that the heat fluxes concentrate on the matrix among the particles.
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