METHOD FOR PRODUCING NANOCOMPOSITE MATERIALS BASED ON POLYMER MATRICES AND NANO-SIZED FILLERS - NANOPARTICLES

摘要

FIELD: chemistry.SUBSTANCE: method for producing nanocomposite materials is described, characterized in that mixtures of different nanoparticles are used as a nanoscale filler of, at least, two types: nanoparticles of the layered geometry, nanofibres, nanotubes, and nanocones/discs introduced into the polymer simultaneously or sequentially. The nanoparticles are introduced into the polymer simultaneously or sequentially by stirring with a mechanical stirrer for 24 hours at the speed of 1000 rpm. At the same time, at least, one of several types of the used nanoparticles can be introduced into the polymer matrix at the stage of its synthesis (in situ polymerization). From the produced nanocomposite solution, films are cast by means of a slot die, dried for 2 hours at the temperatures of 80°C or 70°C followed by the heat treatment in heating mode up to 360°C with the speed of 5 deg/min or up to 250°C at the speed of 3 deg/min and holding at this temperature for 15 or 30 minutes, respectively.EFFECT: providing a polymer material with a high total nanoparticle concentration, at which the concentration of nanoparticles of each type remains sufficiently low to remain uniformly distributed in the volume of the polymer and not to form aggregates, which provides an increased level of mechanical characteristics such as a module of elasticity, strength, and a plasticity limit.2 cl, 1 dwg, 1 tbl, 7 ex