INFLUENCE OF THE CONCENTRATION OF THE FILLER AND OF THE TYPE OF MATRIX ON THE PROPERTIES OF THERMOPLASTICS FILLED WITH SHUNGITE NANOPARTICLE

The infl uence of a shungite fi ller on thermophysical and electrophysical properties of thermoplastics has been investigated. It has been shown that fi lling the thermoplastics with a shungite fi ller is particularly effi cient at a high concentration of the fi ller. It is the thermal conductivity and the thermal diffusivity, and also the electrical conductivity that are most substantially increased by shungite with 60 wt.% of fi lling. Here, the infl uence of shungite is more pronounced in the case of fi lling with polyamide rather than with polyethylene, which is due to the noticeable nucleating effect of shungite. It has been shown that at an equally high degree of fi lling, a PA6-based composite exhibits the properties of a conductor, whereas an LDPE-based one remains a dielectric. It has been established that shungite nanoparticles actively interact with the thermoplastic matrix, structuring the polymer and leading to an improvement of the thermophysical and electrophysical properties of a polymeric composite
   
Author:  S. M. Danilova-Tret′yak, L. E. Evseeva, A. V. Kravtsevich, V. G. Leshchenko, K. V. Nikolaeva, N. N. Rozhkova, and L. I. Shashura
Keywords:  nanosize shungite fi ller, thermoplastic polymers, PA6, LDPE, composite materials, thermal conductivity, thermal diffusivity, specifi c heat, electrophysical properties
Page:  401