Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13087/2597
Title: Developing a hollow glass microsphere/geopolymer thermal insulation composite for hot metal surface coating
Authors: Tatlısu, G. Can
Açıksarı, Cem
Çelebi, Serdar
Turan, Servet
Keywords: Geopolymer
Hollow glass microsphere (HGM)
Industrial waste
Thermal insulation
Hot metal surface
Fly-Ash
Fire Protection
Geopolymers
Metakaolin
Conductivity
Temperature
Performance
Fabrication
Activation
Stability
Issue Date: 2022
Publisher: Elsevier Sci Ltd
Abstract: Manufacturing inorganic thermal insulation materials with superior properties such as low thermal conductivity (k < 0.1 W/mK) and high mechanical properties in terms of adhesion strength is critical for energy efficiency in energy-intense industries. Geopolymer-based composites composing of hollow glass microspheres (HGMs), waste fly ash (FA), and metakaolin (MK) were successfully applied on hot (T similar to 300 degrees C) metal surfaces via spray deposition technique. The effect of Si/Al and Na/Al mole ratios and HGM loading on geopolymer composites' physical, microstructural, thermal, and adhesion strength properties were explored. The best composite composition was obtained when Si/Al mole ratio, Na/Al mole ratio, and HGM loading were 2.5, 1.0, and 10 wt %, respectively. This composition achieved an HGM/geopolymer composite material with low thermal con-ductivity (k similar to 0.05 W/mK), high adhesion strength (similar to 5.0 MPa), and high stability under immersion in water and vibration environments (particularly exposed to water). The results showed that HGM/geopolymer composites could be used as a thermal insulation material in energy-intense industries.
URI: https://doi.org/10.1016/j.ceramint.2022.01.042
https://hdl.handle.net/20.500.13087/2597
ISSN: 0272-8842
1873-3956
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu
WoS İndeksli Yayınlar Koleksiyonu

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