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Impact strength of epoxy nanocomposites modified with particles of fillers of carbon and montmorillonite nature

In the work, the influence of the shape of filler nanoparticles on the optimal size of agglomerates, at which the maximum level of impact strength of epoxy nanocomposites is achieved, is determined.It is shown that the morphology of epoxy nanocomposites and the size of agglomerates in the epoxy oligomer, both at the nano- (up to ~ 100 nm) and micro-levels (up to ~ 390 nm), practically do not change during the curing process when the binder passes from the liquid to the solid state (matrix).It has been established for the first time that the optimal physical and mechanical properties are achieved in nanodispersions and nanocomposites only when agglomerates of nanoparticles with a size of 180–280 nm are formed in the structure of epoxy nanocomposites.