EVALUATION OF THE EFFICIENCY OF USING FLY ASH IN POLYMER COMPOSITE MATERIALS
ПОЛИМЕРЛІ КОМПОЗИТТІК МАТЕРИАЛДАРДАҒЫ ҰШҚЫН КҮЛДІ ПАЙДАЛАНУДЫҢ ТИІМДІЛІГІН БАҒАЛАУ
ОЦЕНКА ЭФФЕКТИВНОСТИ ИСПОЛЬЗОВАНИЯ ЗОЛЫ УНОСА В ПОЛИМЕРНЫХ КОМПОЗИТНЫХ МАТЕРИАЛАХ
Ilmalieva G.B. Tursunbekov D.M. Kenzhaliyev E.B. Atanova O.V. Smailov K.M.
2025National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2025#2025Issue 6135 - 150 pp.
The relevance of this study is determined by the need for rational utilization of industrial waste and the development of environmentally sustainable building materials for the conditions of Kazakhstan. Fly ash from Almaty Thermal Power Plant No. 2, bentonite clay from a local deposit, and wood flour obtained from furniture production residues were selected as mineral fillers for polymer composite materials. The purpose of this research is to evaluate the efficiency of using thermally modified bentonite and fly ash as complex fillers for the production of wood–polymer composites and to determine their influence on the physical and mechanical properties of the materials. The applied research methods included X-ray fluorescence, X-ray diffraction, and thermogravimetric analysis for phase and elemental characterization, optical and electron microscopy for studying morphology and dispersion, and mechanical tests performed according to ISO 62, ISO 178, and ISO 2039-1 standards. The use of fly ash, as a filler for polymer composites has shown positive results in improving their properties, reducing production costs, and solving environmental problems. The results showed that the addition of 20 % fly ash and 5 % thermally modified bentonite at 700 °C increased flexural strength to 20.9 MPa, hardness to 8.47 HB, and reduced water absorption to 0.45 %. These findings confirm the compatibility of mineral fillers with the polymer matrix and demonstrate their reinforcing effect. The scientific novelty of the research lies in establishing the correlation between the thermal modification temperature of bentonite, the change in dispersion of its mineral phase, and their combined effect on the strength properties of wood–polymer composites.
bentonite , building materials , fly ash , thermal modification , wood–polymer composite
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LLP «Perspektivye materialy i tehnologii», Almaty, Kazakhstan
LLP «KazNewTech LLP», Astana, Kazakhstan
JSC «Institute of Metallurgy and Ore Beneficiation», Satbayev University, Almaty, Kazakhstan
LLP «Perspektivye materialy i tehnologii»
LLP «KazNewTech LLP»
JSC «Institute of Metallurgy and Ore Beneficiation»
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