Analysis of influence of functionally graded polymer coatings thickness on the distribution of filler particles

The article presents the results of modeling of constrained sedimentation of the filler particles in the functionally graded coatings of varying thickness. We used software package that allows to simulate the process of constrained sedimentation of polydisperse suspension in the process of polymer systems curing depending on the size and density of the filler particles, the degree of filling and changing of binder viscosity. The authors have revealed changes in the thickness of layers according to the degree of filling, filler ratio varying and thickness of formed coating. It is shown that the process of fractional separation is observed both in highly and lightly filled composites.