RADIATION FUNCTIONAL STUDIES OF THIN POLYMER FILMS FOR THE QUALIFICATION ON USAGE IN CRITICAL EQUIPMENT OF NUCLEAR OBJECTS

Abstract.

Purpose. The methodology of using megavolt electrons to research the functionality of thin polymer films with polycyanurates (PCs) is described. The relevance of research is determined by the plans for their usage as a functional basis for track technologies of the production of heat-resistant nanoporous filter materials of increased strength. Such films are created for the new technologies of polymer filtering materials under the Program of the associated European laboratory LIA, where ionizing radiation is used at most technological stages. Due to the difference between physicochemical properties of PCs and traditional polymers for track technologies, it is necessary to study in detail the negative effects that can occur at different stages of their production and operation. These effects can lead to the loss of functional suitability of polymers for their practical usage. Methods. For this purpose, the development of radiation methods for controlling the properties of the material using megavolt electrons is promising. Radiation has shown itself as an effective tool for modeling most of the processes in the researched material, like aging, degradation, polymerization, strength, heat resistance, and provides objective basis to qualify the material for the suitability to be used for certain goals. In this case, their implementation is associated with solving a number of problems of irradiation of extremely thin polymer films with large doses of ionizing radiation. For this purpose, the methodology of radiation control of the functionality of thin film polymeric materials using powerful electron beams of 1-2 MeV was developed. Results. This research is aimed at searching for the opportunities and ways to carry out comprehensive surveys of the characteristics and ultimate capabilities of new polymer films at the powerful domestic radiation installation with the resonant electron accelerator ILU-6, capable of generating electron beams with a power of 20 kW. For this purpose, local under-beam means of transforming radiation energy into various types of radiation with the possibility to form their energetic composition simultaneously are developed. Conclusions.The specificities of these methods and the results of their application for researching the functionality of thin films with CC for practical usage are discussed

Keywords: electron beams, nuclear membranes, heat-resistant polymers, radiation resistance, functional tests

https://doi.org/10.24144/2415-8038.2020.47.63-73