Abstract:

Polymer composites on the basis of secondary polypropylene and high dispersive powders of minerals wide spread in Georgia (andesite from Bakuriani, quartz sand from Sachkhere and slam from Okami) were obtained and investigated their some physical-mechanical and thermal properties. It is shown that the ultimate strength and thermal stability of composites extremely depend on the filler concentration and at definite significant of the concentration have maximums. For the composites with binary fillers (quartz sand/slam, quartz sand /andesite and slam/ andesite) revealed synergistic effect - anomaly increasing of the ultimate strength at definite proportion of fillers. It is established that modification of the mineral fillers with tetraethoxisilane enhances technical characteristics of the composite.

Keywords: polymer composite; mineral filler; ultimate strength; thermal stability; synergistic effect.