Influence of nanoparticles on the physical and mechanical properties of modified epoxy-composite coatings

Abstract

In the work, to form a composite material with increased physical and mechanical properties, an epoxy diane oligomer ED-20, a hardener polyethylene polyamine PEPA and a modifier 2,4 diaminotoluene were used as a binder. The dependence of the nanoparticle content as a mixture of nanodispersed compounds on the physicomechanical properties of epoxy composites was studied. To form a protective coating with increased cohesive properties, the optimal content of nanoparticles is q = 0.5 pts.wt. by 100 parts by weight of epoxy oligomer ED-20, which provides an increase in the ability of the developed material to resist static, dynamic, and shock loads. The adsorption and catalytic activity of nanofillers has been proved by optical spectroscopy, which provides interaction with the side chains of the epoxy oligomer chain, as a result of which the cohesive strength of the materials increases.