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  • Документ
    Production of modified basalt fibre for heat-insulating products manufacturing
    (IOP Publishing, 2019) Gots, V. I.; Berdnyk, O.Y.; Rogozina, N. O.; Maystrenko, А. А.
    As a result of the research flexible heat-insulating materials were developed based on basalt fiber with increased effectiveness, which can be achieved due to directed fiber microstructure forming through fusion modification. It is known that chemical composition of initial fusion not identically influences on physical and chemical and mechanical properties of basaltic fibres. Structural descriptions of fusion and basaltic fibre got from him appear main factors the nearer, than high speed of cooling. This index mainly depends on such constituents: а) ambient temperatures; b) coefficient of heat conducting; c) heat conducting of fusion; d) areas of surface. By researches influence of temperature of basaltic fusion was shown on the structure of fibres. Structural characteristics of the basalt fiber (number of active zones, coefficient of its distribution on the basalt fiber surface, as well as a correlation of three groups of active zones) depend on rheological properties of basal fusion, speed of drawing through the die plate and cooling speed.
  • Документ
    The influence of technological factors on the properties of basalt fiber when used in the manufacture of flexible heat and sound insulating products
    (Proceedings of the 3rd Annual Conference “Technology transfer: fundamental principle and innovative technical solutions”. Tallin, Estonia, 2019) Berdnyk, Oksana
    Analysis of energy efficiency and operational safety of technological equipment of industrial enterprises, engineering networks, buildings and structures, building structures in many sectors of the economy, including the housing and industrial sectors, causes interest in the use of high-tech, environmentally friendly heat and sound insulation materials with enhanced performance properties. One of the relevant representatives of these materials is basalt fibers and their use as raw materials in the production of flexible heat and sound insulating products. It is known that the chemical composition of the initial melt equally affects the physicochemical and mechanical properties of basalt fibers. The main influence factors, including the chemical composition, are the thermal past of the melt, the method for producing basalt fiber and the conditions for the formation of its structure. These factors determine the structural characteristics of the fiber and, as a consequence, its physicochemical characteristics. The degree of fiber strength is directly determined by its chemical composition and production method. The greatest strength of the fiber is obtained by ensuring the perfect fiber structure in the absence of ruptures of siliceous chains
  • Документ
    Розрахунковий аналіз температури напружених поверхонь нагрівання високотемпературних повітронагрівачів
    (Товариство "Знання" України, 2005) Макаров, Анатолій Стефанович; Сенчук, Михайло Петрович
    Вивчено на моделях якісну картину передачі теплоти високотемпературними поверхнями. Розроблено комп'ютерну розрахункову модель передачі теплоти у повітряних каналах. Виконано розрахунковий аналіз температурного режиму високотемпературних повітронагрівачів