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 (5): 699-705.

• • 上一篇    下一篇

新型两性氟碳表面活性剂的理化性能及灭火性能研究

张宇强1,2, 朱新华1,2, 贾旭宏1,2   

  1. （1.中国民用航空飞行学院 民航安全工程学院，四川 广汉 618307； 2.民机火灾科学与安全工程四川省重点实验室，四川 广汉 618307）
  • 收稿日期:2024-07-10 修回日期:2024-08-20 出版日期:2025-05-15 发布日期:2025-05-15
  • 作者简介:张宇强，中国民用航空飞行学院讲师，民机火灾科学与安全工程四川省重点实验室成员，博士，主要从事泡沫灭火剂及阻燃材料相关研究，四川省广汉市南昌路四段46号，618307， kz9323@sina.com。
  • 基金资助:
    四川省自然科学基金面上项目（2022 NSFSC0302）；中国民用航空局安全能力建设项目（MHAQ2023030）；中国民用航空飞行学院面上项目（J2022-091）

Study on the physicochemical properties and fire extinguishing performance of novel zwitterionic fluorocarbon surfactants

Zhang Yuqiang1,2, Zhu Xinhua1,2, Jia Xuhong1,2   

  1. (1. College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan Sichuan 618307, China; 2. Civil Aircraft Fire Science and Safety Engineering Key Laboratory of Sichuan, Civil Aviation Flight University of China, Guanghan Sichuan 618307, China)
  • Received:2024-07-10 Revised:2024-08-20 Online:2025-05-15 Published:2025-05-15

摘要： 选取一系列接枝不同碳链长度羧基的甜菜碱型短链氟碳表面活性剂，并配制了相应的水成膜泡沫灭火剂。研究了氟碳表面活性剂与己烷磺酸钠复配体系的理化性能，包括表面活性、铺展能力、发泡性能以及泡沫灭火剂的灭火性能。结果表明，复配体系的临界胶束浓度低于5.85 mmol/L，对应表面张力均低于19.71 mN/m。3种表面活性剂的复配体系在燃油表面均能够铺展，发泡倍数超过7.1倍，25%析液时间不低于3.27 min。灭火剂对各燃油火的灭火时间在53 s以内，抗烧时间超过15.09 min。说明羧基甜菜碱型短链氟碳表面活性剂在水成膜泡沫灭火剂中具有潜在的应用前景。

关键词: 水成膜泡沫, 短碳链氟碳表面活性剂, 羧基甜菜碱, 表面活性, 灭火剂

Abstract: A series of betaine short chain fluorocarbon surfactants grafted with carboxyl groups of different carbon chain lengths were selected, and the corresponding aqueous film foam extinguishing agent was prepared. The physicochemical properties of the mixed systems of fluorocarbon surfactants and sodium hexanesulfonate were studied, including surface activity, spreading ability, foaming property and fire extinguishing property of foam extinguishing agent. The results show that the critical micelle concentrations of the mixed systems were lower than 5.85 mmol/L, and the surface tension were lower than 19.71 mN/m. The mixed systems of the three surfactants can spread on the fuel surface, the foam expansion is over 7.1, and the 25% drainage time is not less than 3.27 min. The fire extinguishing time on fuels is less than 53 s while the burn-back time is more than 15.09 min. The results imply a potential application prospect of carboxy betaine short chain fluorocarbon surfactants in AFFFs.

Key words: aqueous film-forming foams, short chain fluorocarbon surfactant, carboxy betaine, surface activity, fire extinguishing agent