Liushuk O. Development of polymer matrix multi-filled composite materials for friction purposes with a set of controlled properties

The dissertation is devoted to the development of new weather-resistant epoxy ‒ composite materials of friction purpose for braking systems of automobile equipment on the basis of epoxy - polymer matrix with modification treatment in the electromagnetic field and discrete fibers by ultrasound. The peculiarities of structuring epoxy polymers depending on the content of the organosilicon modifier and the mode of its processing in the electromagnetic field are investigated. The optimal mode of ultrasonic treatment of discrete aramid and fiberglass in a solvent medium is determined, which provides high physical and mechanical characteristics of epoxy-silicon-organic polymers by activating and cleaning the surface of the fibers from greases and contaminants. The tribo-technical properties were investigated and the tribo-contact surfaces of multi-filled friction epoxy composites were analyzed, as a result of which the optimal composition of epoxy composite material was determined, which has high wear resistance and stable friction coefficient in the investigated range of friction loads. Peculiarities of structuring and formation of chemical bonds between components of polymer composite material on the basis of epoxy-silicon-organic matrix filled with discrete aramid and fiberglass are determined. The technology of forming and composition of new epoxy-composite materials of friction purpose with the processing of system components in physical fields for the formation of elements of braking systems of automobile equipment with the increased resistance to the influence of aggressive environments and atmospheric factors is developed.