Abstract
Stricter requirements for the quality and reliability of manufactured products, as well as the need to increase the service life of machines, mechanisms and various devices, the operation of which is associated with the use of liquid or gas-air media, is the reason for the emergence of new and improvement of traditional methods for obtaining filter materials with higher performance characteristics. A method for a comprehensive analysis of the properties of regenerated filter materials for fine air purification is proposed. The overwhelming majority of filters, after their service life is exhausted, cannot be regenerated, since this, as a rule, is associated with high energy costs. At the same time, the development of methods for such regeneration is quite relevant from the point of view of resource conservation. In this regard, the purpose of this work is to use a number of physical research methods for the purpose of a comprehensive analysis of polymeric fibrous filter materials for air purification that have undergone regeneration. Filtration materials obtained by the «melt-blowing» method from polymer granules by processing the granulate in an extruder, aerodynamic spraying of the melt and the formation of a fibrous-porous layer on a forming mandrel were selected for research. The main filtration characteristics of the original and regenerated filter materials (breakthrough coefficient, aerodynamic drag),as well as the electrophysical properties of the primary and secondary filter materials, the presence of a spontaneous electret charge have been investigated. The main stages of regeneration and evaluation of physicochemical, mechanical and operational properties of fibrous-porous materials that have undergone secondary thermo-aerodynamic processing in comparison with the original ones are described. It is shown that the studied materials retain their basic properties, while the structure of the fibers changes and the electret effect is enhanced.
Highlights
the operation of which is associated with the use of liquid or gas-air media
the development of methods for such regeneration is quite relevant from the point of view
the purpose of this work is to use a number of physical research methods for the purpose
Summary
Белорусский государственный университет информатики и радиоэлектроники (г. Минск, Республика Беларусь). Предложена методика всестороннего анализа свойств регенерированных фильтроматериалов для тонкой очистки воздуха. В связи с этим целью настоящей работы является привлечение ряда физических методов исследования с целью всестороннего анализа полимерных волокнистых фильтроматериалов для очистки воздуха, прошедших регенерацию. Для исследований были выбраны фильрующие материалы, полученные методом «melt-blowing» из полимерных гранул путем переработки гранулята в экструдере, аэродинамического распыления расплава и формирования волокнисто-пористого слоя на формообразующей оправке. Описаны основные этапы регенерации и оценки физико-химических, механических и эксплуатационных свойств прошедших вторичную термо-аэродинамическую переработку волокнисто-пористых материалов в сравнении с исходными. Что исследованные материалы сохраняют свои основные свойства, при этом изменяется структура волокон и усиливается электретный эффект. Ключевые слова: полимерные волокна, волокнистые фильтрующие материалы, очистка воздуха, процесс «melt–blowing», электретный эффект, регенерация фильтроэлементов. Способ анализа структуры и свойств регенерированных полимерных волокнистых фильтроматериалов для тонкой очистки воздуха. PILINEVICH Belarusian State University of Informatics and Radioelectronics (Minsk, Republic of Belarus)
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