Heat accumulating blocks based on the pyrophyllite and thermally expanded graphite

Igor Korobiichuk , Oleksandr Tolkach , Oleksandr Melnik , Michał Nowicki , Roman Szewczyk


Electrically conductive composites are widely employed as electrical heating elements, heat accumulation blocks and others. By the mechanical mixing the thermally expanded graphite (TEG), pyrophyllite and kaolin (as binder) the electroconductive composite materials were obtained. These materials have heat accumulation properties and can be used in the autonomous heating system as a heat accumulation blocks. The prospects of using pyrophyllite as a matrix and the possibility of partial replacement of kaolin were shown. A comparative analysis of main functional properties of composite was made. Based on pyrophyllite and kaolin a manufacturing technology of heat accumulation blocks was obtained. Analysis of obtained microphotographs of the material shows that the structure of the material is highly porous and layered. Layered structure provides high sensitivity of resistive properties of the strain in the direction perpendicular to the layers. Microphotographs showed that TEG particles in the forming process create flat agglomerates that are evenly distributed on the volume of ceramic matrix. The influence of ratio of pyrophyllite and kaolin on the porosity and electrical resistivity of a new composite material was investigated. It was shown that replacing kaolin by pyrophyllite makes possible to increase significantly the electrical conductivity of composites.
Author Igor Korobiichuk (FM / IACR)
Igor Korobiichuk,,
- The Institute of Automatic Control and Robotics
, Oleksandr Tolkach - Zhytomyr State Technological University (ZSTU) [Zhytomyr State Technological University]
Oleksandr Tolkach,,
, Oleksandr Melnik - Zhytomyr State Technological University (ZSTU) [Zhytomyr State Technological University]
Oleksandr Melnik,,
, Michał Nowicki (FM / IMBE)
Michał Nowicki,,
- The Institute of Metrology and Biomedical Engineering
, Roman Szewczyk (FM / IMBE)
Roman Szewczyk,,
- The Institute of Metrology and Biomedical Engineering
Publication size in sheets0.5
Book International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management (SGEM 2016). Conference Proceedings, International Multidisciplinary Scientific GeoConference & EXPO SGEM, vol. 2, 2016, International Multidisciplinary Scientific GeoConference SGEM, ISBN 978-619-7105-59-9, 1098 p., DOI:10.5593/sgem2016B22
Keywords in Englishthermally expanded graphite (TEG), pyrophyllite, kaolin, heat accumulation blocks
URL https://www.sgem.org/sgemlib/spip.php?article7159
Languageen angielski
Score (nominal)15
Score sourceconferenceIndex
ScoreMinisterial score = 15.0, 23-12-2019, BookChapterSeriesAndMatConfByConferenceseries
Ministerial score (2013-2016) = 15.0, 23-12-2019, BookChapterSeriesAndMatConfByConferenceseries
Publication indicators WoS Citations = 1; Scopus Citations = 1; GS Citations = 1.0
Citation count*1 (2020-01-21)
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