SiO<sub>2</sub>纳米颗粒对环保型泡沫灭火剂稳定性的影响

doi:10.11896/cldb.22050272

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Abstract In the work, a kind of environmentally friendly firefighting foams were prepared based on hydrocarbon surfactant (APG0810) and short chain fluorocarbon surfactant (FS-50). The effect of SiO₂ nanoparticles on solution properties, foaming ability and foam stability of the firefighting foams were systematically studied. The enhancement mechanism of SiO₂ nanoparticles on foam stability was analyzed. The results show that the SiO₂ nanoparticles have a great influence on the solution properties and foam properties of the firefighting foams. The surface activity of the mixed dispersions decreased and then increased with increasing nanoparticle concentration. The dynamic viscosity increases with increasing nanoparticle concentration. The conductivity decreases with increasing nanoparticle concentration. The addition of nanoparticles results in decrease in foaming ability of the mixed dispersions. The foam stability increased significantly with the increase of nanoparticle concentration,and the foam stability increased sharply after reaching 7wt%. The added nanoparticles accumulate in foam bubble films and Plateau borders, effectively delaying foam drainage and coarsening and enhancing foam stability. This study can provide theoretical guidance for the application of nanoparticles in the development of environmentally friendly firefighting foams.

Key words： nanoparticle fluorocarbon surfactant hydrocarbon surfactant firefighting foam foam stability

Published: 25 September 2023 Online: 2023-09-18

CLC number:

TQ569

Fund:National Natural Science Foundation of China (51904230) and Youth Innovation Team Project of Shaanxi Educational Department (21JP074).

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	Articles by authors
	SHENG Youjie
	PENG Yunchuan
	ZHANG Hanling
	YAN Canbin
	LI Yang
	MA Wenzhi

Cite this article:

SHENG Youjie,PENG Yunchuan,ZHANG Hanling, et al. Effect of SiO₂ Nanoparticles on Foam Stability of Environmental-friendly Firefighting Foam[J]. Materials Reports, 2023, 37(18): 22050272-6.

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http://www.mater-rep.com/EN/10.11896/cldb.22050272 OR http://www.mater-rep.com/EN/Y2023/V37/I18/22050272

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