REGULARITIES OF THE INFLUENCE OF THE TEMPERATURE REGIME OF POLYMER NANOCOMPOSITES PREPARATION ON THEIR DENSITY

Experimental data on the study of the dependence of the density of nanocomposites with a polypropylene matrix filled with carbon nanotubes on the overheating of the polymer melt relative to its melting temperature are presented. The results are performed for nanocomposites obtained using a method based on mixing components in a polymer melt using a special disk extruder. The level of overheating of the melt varied in the range from 5K to 75 K for different values of the mass fraction of the filler from 0.3 to 10.0%. The dependences of the density of the studied composites on the level of overheating of the polymer melt have been determined. The presence of a correlation between this dependence and the nature of the corresponding change in the thermal conductivity of composites has been established.