SiO_(2)纳米颗粒对环保型泡沫灭火剂稳定性的影响  

Effect of SiO_(2)Nanoparticles on Foam Stability of Environmental-friendly Firefighting Foam

作　　者：盛友杰 彭云川 张含灵 阎灿彬 李杨 马文智 SHENG Youjie;PENG Yunchuan;ZHANG Hanling;YAN Canbin;LI Yang;MA Wenzhi(College of Safety Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054,China)

机构地区：[1]西安科技大学安全科学与工程学院,西安710054

出　　处：《材料导报》2023年第18期259-264,共6页Materials Reports

基　　金：国家自然科学基金(51904230);陕西省教育厅青年创新团队项目(21JP074)。

摘　　要：本工作以碳氢表面活性剂(APG0810)和短链氟碳表面活性剂(FS-50)为核心组分制备了环保型泡沫灭火剂,系统地研究了SiO_(2)纳米颗粒对泡沫灭火剂溶液性质、起泡性能及泡沫稳定性的影响,分析了SiO_(2)纳米颗粒对泡沫灭火剂稳定性的增强机理。结果表明,SiO_(2)纳米颗粒对泡沫灭火剂的溶液性质与泡沫性能均有较大影响。随纳米颗粒浓度的增加,泡沫灭火剂溶液的表面活性先降低后增加,动态粘度逐渐增加,电导率逐渐降低,而起泡性略微下降。泡沫稳定性随着纳米颗粒浓度的增加而显著增加,达到7%后,泡沫稳定性急剧增加。SiO_(2)纳米颗粒与泡沫灭火剂活性组分在泡沫液膜和Plateau边界中相互作用,形成网状结构聚集体,有效地延缓泡沫析液和粗化,从而增强泡沫的稳定性。本工作的研究结果能够为SiO_(2)纳米颗粒在环保型泡沫灭火剂的研发和应用方面提供理论指导。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 SiO_(2)nanoparticles on solution properties,foaming ability and foam stability of the firefighting foams were systematically studied.The enhancement mechanism of SiO_(2)nanoparticles on foam stability was analyzed.The results show that the SiO_(2)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.

关 键 词：纳米颗粒 氟碳表面活性剂 碳氢表面活性剂 泡沫灭火剂 泡沫稳定性 

分 类 号：TQ569[化学工程—炸药化工]