A study on a Janus-type composite solidified foam and its characteristics for preventing and controlling spontaneous combustion of coal

Di Xue, Xiangming Hu, Gongzheng Sun, Kai Wang, Tongyu Liu, Jiqiang Wang and Fusheng Wang

Energy, 2023, vol. 275, issue C

Abstract: To solve the problem of poor effect of plugging air leakage in the prevention and control of coal spontaneous combustion by traditional inorganic solidified foam, Janus-type composite solidified foam (JCSF) was proposed in this study. An ultra-stable aqueous foam (UAF) was synthesized via the modification of the gas-liquid interface by forming a “Janus bilayer” of hydrophobic nano-silica and hydrophilic polyvinyl alcohol. Different techniques were used to study the stability of UAF. In addition, by using non-combustible inorganic materials such as cement and fly ash as the matrix and organic materials as the reinforcement, JCSF was synthesized by the prefabricated foam method, and its formulation was optimized by the response surface methodology. The stability test of UAF indicated that the “Janus bilayer” could effectively inhibit the Ostwald ripening, continuous coalescence, and drainage of the foam. The air leakage plugging efficiency, flame retardancy, fire extinguishing, and stacking characteristics showed that JCSF combined the advantages of traditional inorganic solidified foams and reactive polymer foams. It also showed a higher air leakage plugging efficiency, lower heat production, excellent fire prevention and extinguishing, and strong accumulation capacity.

Keywords: Spontaneous combustion of coal; Composite solidified foam; Response surface methodology; Ultra-stable aqueous foam; Interfacial co-assembly (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544223008277
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:275:y:2023:i:c:s0360544223008277

DOI: 10.1016/j.energy.2023.127433

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().