主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2025, Vol. 44 ›› Issue (9): 1297-1302.

• • 上一篇    下一篇

高稳定压缩空气泡沫流变性研究

陈涛1,2,3, 秦国杨1,3, 李毅1,2,3, 张鹏1,2, 王雨薇1,3, 包志明1,2,3   

  1. （1.应急管理部天津消防研究所，天津 300381； 2.工业与公共建筑火灾防控技术应急管理部重点实验室，天津 300381； 3.天津市消防安全技术重点实验室，天津 300381）
  • 收稿日期:2024-10-12 修回日期:2025-02-18 出版日期:2025-09-15 发布日期:2025-09-15
  • 作者简介:陈 涛，应急管理部天津消防研究所研究员，主要从事新型灭火剂与灭火技术研究，天津市南开区卫津南路110号，300381，chentao@tfri.com.cn。
  • 基金资助:
    国家重点研发计划项目（2022YFC3004900，2022YFC3004903）；天津市应用基础研究多元投入——城市消防项目（22JCZDJC00880）；应急管理部天津消防研究所基科费项目（2024SJ02）；国网浙江省电力有限公司科技项目（SGZJDK00DYJS2400120）

Study on rheological properties of high stability compressed air foam

Chen Tao1,2,3, Qin Guoyang1,3, Li Yi1,2,3, Zhang Peng1,2, Wang Yuwei1,3, Bao Zhiming1,2,3   

  1. (1. Tianjin Fire Science and Technology Research Institute of MEM, Tianjin 300381, China; 2. Key Laboratory of Fire Protection Technology for Industry and Public Building, Ministry of Emergency Management, Tianjin 300381, China; 3. Tianjin Key Laboratory of Fire Safety Technology, Tianjin 300381, China)
  • Received:2024-10-12 Revised:2025-02-18 Online:2025-09-15 Published:2025-09-15

摘要： 泡沫流变性是进行泡沫灭火系统工程设计和水力计算的重要基础。通过正压发泡方式产生泡沫，采用旋转式流变仪测试了不同工况下的压缩空气泡沫动力黏度及剪切应力变化规律，分析了新型高稳定压缩空气泡沫的流变行为特性和流变模型。结果表明：基于多糖聚合物的新型高稳定压缩空气泡沫5 min内流变本构方程符合Herschel-Bulkley模型，属于屈服拟塑性流体，泡沫动力黏度随着剪切速率增大而逐渐减小；新型高稳定压缩空气泡沫的剪切应力和动力黏度随多糖聚合物预混液混合比、气液比和发泡时间的增加而逐渐增大；多糖聚合物预混液混合比越大，新型高稳定压缩空气泡沫流变性越差，多糖聚合物预混液混合比由37.5%增大至50.0%时，剪切应力几乎不变；气液比越高，发泡时间越久，新型高稳定压缩空气泡沫流变性越差。

关键词: 灭火剂；压缩空气泡沫；高稳定；流变性；气液比；混合比

Abstract: Foam rheological properties are important for engineering design and hydraulic calculation of foam fire extinguishing system. The dynamic viscosity and shear stress of compressed air foam under different working conditions were measured by a rotary rheometer, and the rheological properties and rheological model of a new type of high stability compressed air foam are analyzed. The results show that the rheological constitutive equation of the new high stability compressed air foam based on polysaccharide polymer conforms to the Herschel-Bulkley model within 5 minutes and belongs to the yield pseudo-plastic fluid, and the foam dynamic viscosity decreases with the increase of shear rate. The shear stress and dynamic viscosity of the new high stability compressed air foam gradually increase with the increase of polysaccharide polymer premix mixing ratio, gas-liquid ratio and foaming time. The rheological properties of the compressed air foam decreases with the increase of polysaccharide polymer premix mixing ratio. When the mixing ratio of polysaccharide polymer premix is increased from 37.5% to 50.0%, the shear stress is almost unchanged. The rheological properties of the high stability compressed air foam decreases gradually with the increase of gas-liquid ratio and foaming time.

Key words: fire extinguishing agent; compressed air foam; high stability; rheological properties; gas-liquid ratio; mixing ratio