Preparation of layer-reinforced nanocomposite based on polytetrafl uoroethylene by laser ablation and ion-plasma modifi cation

Abstract

The results of researches devoted to solving the problem of obtaining of layered-reinforced nanocomposite based on polytetrafluoroethylene are presented. To ensure the required adhesive strength between the polymer base and the metal coating based on molybdenum, the surface layer of the base is reinforced with dispersed particles of zirconium dioxide. It is found that when reinforced with zirconium dioxide, the structure of polytetrafluoroethylene becomes more dense, and the ratio of atomic concentrations of fluorine and carbon in its composition decreases, which indicates decrease in the number of saturated fluorocarbon bonds in the polymer and leads to higher chemical activity of polytetrafluoroethylene. The obtained data on change in the chemical state of the layered-reinforced composite components indicate high degree of interaction between the polymer matrix elements, reinforcing components and coating elements in the area of the intermediate mesolayer.