Effect of nanoparticle network formation on electromagnetic properties and cell morphology of microcellular polymer nanocomposite foams

摘要: Abstract Adding high loadings of nanoparticles can remarkably alter the functionality polymer nanocomposite foams. Therefore, this dramatic change was studied at percolation threshold as a point to predict properties foamed nanocomposites using viscoelastic characteristics un-foamed ones. In research, effect incorporating 10–40 wt% ZnO on rheological PS/ZnO samples investigated. Then, these were processing temperatures 80 and 120 °C study morphology electromagnetic properties. First, showed that storage modulus increased significantly above 20 wt% nanoparticles. A connected network altered microstructure percolation. The morphological results show higher cell density for From properties, is obvious absorption enhancement 30 40 wt% only 120 °C, respectively. are still dominant lower temperature, but foam structure became more important temperatures. This shows role filler faded temperature changed with structure. expansion in decrease amount fixed volume foams, so fraction required form