STRUCTURAL FEATURES OF POLYMER NANOCOMPOSITE AS A PROSPECTIVE ANTIFRICTION MATERIAL

Abstract

The results of studying the structure of the organic component of the sol of polysiloxane particles (PSP), which are introduced as a modifier in the preparation of an epoxy nanocomposite, are described by method of nuclear magnetic resonance spectroscopy. Data of scanning and transmission electron microscopy on its structure are given. It is shown that PSPs are silicon dioxide nanoparticles with a high content of OH-groups on their surface. The simultaneous introduction of PSP and graphite into the epoxy polymer leads to a decrease in the grain size of the epoxy matrix and the formation of a heterophase layered structure with a uniform distribution of phases. The main elements of this structure are the domains of the matrix phase connected by solid boundaries, the packing of which can facilitate their mutual sliding under the action of high shear stresses.