Role of Sintering Temperature in Production of Nepheline Ceramics-Based Geopolymer with Addition of Ultra-High Molecular Weight Polyethylene

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ID: 269333
2021
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Abstract
The primary motivation of developing ceramic materials using geopolymer method is to minimize the reliance on high sintering temperatures. The ultra-high molecular weight polyethylene (UHMWPE) was added as binder and reinforces the nepheline ceramics based geopolymer. The samples were sintered at 900 °C, 1000 °C, 1100 °C, and 1200 °C to elucidate the influence of sintering on the physical and microstructural properties. The results indicated that a maximum flexural strength of 92 MPa is attainable once the samples are used to be sintered at 1200 °C. It was also determined that the density, porosity, volumetric shrinkage, and water absorption of the samples also affected by the sintering due to the change of microstructure and crystallinity. The IR spectra reveal that the band at around 1400 cm−1 becomes weak, indicating that sodium carbonate decomposed and began to react with the silica and alumina released from gels to form nepheline phases. The sintering process influence in the development of the final microstructure thus improving the properties of the ceramic materials.
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Authors Romisuhani Ahmad;Mohd Mustafa Al Bakri Abdullah;Wan Mastura Wan Ibrahim;Kamarudin Hussin;Fakhryna Hannanee Ahmad Zaidi;Jitrin Chaiprapa;Jerzy J. Wysłocki;Katarzyna Błoch;Marcin Nabiałek;Ahmad, Romisuhani;Abdullah, Mohd Mustafa Al Bakri;Ibrahim, Wan Mastura Wan;Hussin, Kamarudin;Ahmad Zaidi, Fakhryna Hannanee;Chaiprapa, Jitrin;Wysłocki, Jerzy J.;Błoch, Katarzyna;Nabiałek, Marcin;
Journal Materials (Basel, Switzerland)
Year 2021
DOI
10.3390/ma14051077
URL
https://doi.org/10.3390/ma14051077
Keywords
ceramics geopolymer lightweight sintering nepheline

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