The thesis is dedicated to the decision of a scientific and technical objective, which involves increasing of a resource of work of the equipment of vehicles use the developed modified polymeric composites. The solution of scientific objective is to improve the method of directed and pre-determined improving of the properties of composites due to sound management of structural processes, which allows to increase the service life of protective coatings intended for repair of water transport.
The relevance of this research area is specified by the fact that as for today significant attention is paid to the development of new technologies regarding polymeric composites which can be widely used in the manufacturing and repairing of details and its component in different branches of industry including water transport. Intensity of cargo transportation goods, increase of loading conditions of vehicles, constant work in the conditions of influence of aggressive environments put forward requirements to improvement of values of resource saving of units of vehicles and reduction of terms of repair work.
In this context, one of the most promising, which would meet the requirements of the modern transport industry, are epoxy composite materials, which in their performance characteristics in most cases are better than traditional metals and alloys. Thus, physical modification of epoxy materials allows to create composites with the set up properties. Therefore, in order to create new epoxy materials with set up performance characteristics, the composite cost reduction, technological properties improvement, and to solve environmental problems, modifiers and fillers of different nature in a homeopathic amount are added to the binder in addition to the interphase interaction. Based on this, conducting research in the direction of new epoxy materials development for repairs of vehicles is an urgent task today.
The aim of the thesis is to increase the operational life of the vehicles component by increasing their resistance to wear under the influence of hydroabrasive due to the use of protective epoxy coatings with predetermined properties.
To achieve this aim it was necessary to solve the following scientific and practical tasks:
1. To analyze the problems of today in terms of increasing the service life of vehicles and ways for their solution due to use of polymer composites and protective coatings based on them with increased resistance to hydroabrasive wearing.
2. To increase the service life of vehicle parts due to the use of protective coatings, in the formation of which the patterns of influence of the modifier of 4-aminobenzoic acid, microdisperse fillers and discrete fibers on the properties and structure of materials were established.
3. To develop a mathematical model that takes into account the optimization of ingredient content in the formation of protective coatings for functional purposes.
4. To determine the regularities of interrelation of protective coating structure with their adhesion, physical and thermophysical properties and resistance to the hydroabrasive wearing in the presence of modifier, microdisperse additives and discrete fibers.
5. To develop recommendations on the technology of formation and composition of modified polymer composites with high water-abrasive wear resistance for vehicle repair.
In solving these tasks the object and the subject of research were selected by postgraduate student, the newest methods of examining were applied and obtained results were theoretically sound, generalized and described, practical recommendations for the developed material implementation into manufacturing process were formulated.
The object of the research are processes of increasing of the service life of details of vehicles as a result of usage of protective coatings with improved hydroabrasive wearing. The subject of the research is the indicators of the properties of the protective coating which contain the modifier, microdisperse additives and discrete fibers.
