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Technological basis for the synthesis of polymer composite on the basis of highly filled with tungsten oxide polyimide matrix

When creating highly filled compositions based on powder components, it is necessary to take into account the physical processes both at the stage of activation and mixing of the components, and at the stage of forming the product by pressing at high pressure. The paper presents a probe microscopy of the surface of a polyimide composite with a filler of various compositions. The optimal composition of the composite material is determined based on the data on the passage of ultrasonic waves in it. The dependence of the density of the composite on the content of the filler and the pressing pressure, as well as the change in the uniformity of the surface on these factors, has been established. It is shown that when using modified tungsten dioxide, the homogeneity and filling of the composite increases to 20% in comparison with unmodified tungsten dioxide at the same material strength. An increase in the strength characteristics of the polyimide composite due to the crosslinking of the polymer matrix with the filler has been established.