Chernyavskaya T. "The method of river and sea transport equipment’s service life’s increasing through the usage of modified protective anti-corrosion coatings"

The dissertation work is devoted to the decision of a scientific and technical problem, which consists in the increasing of the river and sea transport equipment’s work resource, by the usage of the developed modified anticorrosive protective coverings. The solution of the scientific and technical problem is development of the targeted control’s method of the interaction’s processes between the components of epoxy polymer, which allowed creation of the new class of composite materials and coatings based on them with high performance characteristics for water transport’s restoration. The relevance of the researched area is determined to the fact that despite the wide range of currently known polymer composites, the most common are anticorrosive adhesives based on epoxy oligomers. During the formation of such materials at the stage of crosslinking, various additives are introduced into the binder, which provides an increasing of the gelation’s degree of heterogeneous systems and, as a consequence, leads to an improvement of their properties. It should be noted that modern water transport vessels are affected by the dynamics of climatic loads due to work in different time zones in a short time length. This involves the operation of both hulls and machines and mechanisms under the dynamics of critical temperatures’ influence, which leads to rapid aging of equipment. This primarily applies to protective anti-corrosion coatings, which are exposed to both dynamic, mechanical and thermal loads. That’s why, the research and analysis of polymer coatings’ anti-corrosion properties under different operating conditions is an actual task to ensure the reliability of parts and vehicles in general. The work’s objective is increasing of river and sea transport’s parts’ resource by improving of their corrosion resistance due to the establishment of structure’s formation pattern and properties of protective epoxy coatings. For achievement of the objective, it was necessary to solve the following scientific and practical tasks: 1. Analyzing the current state of operating conditions’ issues and increasing the life of river and sea transport due to usage of polymer composites and protective coatings based on them with high corrosion resistance. 2. For increasing of the river and sea transport parts’ resource and their operational characteristics due to the establishment of phthalimide modifier and microdisperse fillers’ pattern’s influence on the properties and structure of protective coatings for anti-corrosion purposes. 3. Mathematical model’s development for optimization of components’ content in the formation of protective coatings for the restoration of vehicles. 4. To improve the vehicles’ performance for patterns’ establishment of the protective coatings’ structure’s relationship with their adhesive, physical mechanical, thermal physical properties in the presence of microdisperse additives of different physical and chemical nature. 5. The development of recommendations for improving the efficiency and service life of river and sea transport vessels through the usage of polymer composite coatings for anti-corrosion purposes. During problems’ solving the object and subject of research were selected by the applicant, applied the latest test methods, as well as theoretically substantiated, summarized and described the results, formulated practical recommendations for the implementation of the developed materials in production. The object of research is the processes of the river and sea transport’s parts’ resource’s increasing as a result of anti-corrosion polymer composite coatings usage. The subject of the study are the indicators of vehicles’ service life and reliability with protective anti-corrosion coating containing a modifier and microdisperse additives.