The maximum packing density of dispersed particles is a key parameter for the mathematical modeling of the structure of polymer composite materials

The main parameter for modeling various types of dispersed structure of polymer composite materials in accordance with the generalized model [1] is the maximum packing density of filler particles in volume (parameter φm, volume fraction). The paper presents various methods for determining the maximum packing density of dispersed fillers: by bulk density, by compaction curve, by oil and oligomer capacity, and by porosity (three-concentration method) of the filled material. A comparative analysis of the results obtained for dispersed fillers based on silicon dioxide with different particle sizes was conducted, and recommendations were provided for selecting the methods for different fillers.