水成膜泡沫 (AFFF) 是一种高效的 B 类火灾（易燃液体）灭火剂。其功效源于 PFAS 基氟表面活性剂，它能显著降低水的表面张力。这使得泡沫能够迅速扩散到燃烧液体的表面，形成一道蒸汽屏障，抑制火焰燃烧并冷却燃料。
水成膜泡沫（AFFF）
1960
（图片仅供参考）
AFFF was a revolutionary development in firefighting technology. Before AFFF, protein-based foams were used, but they were less effective and slower to control large liquid fuel fires. The key innovation in AFFF is the use of fluorosurfactants. These molecules have a water-soluble (hydrophilic) head and a water-insoluble (hydrophobic) fluorocarbon tail. When mixed with water and aerated, they create a foam blanket. Crucially, as the foam drains, the fluorosurfactants create a thin aqueous 电影 that floats on the surface of the hydrocarbon fuel. This film has a surface tension lower than that of the fuel, allowing it to spread rapidly and reseal if disturbed. The film serves multiple purposes: it suppresses the release of flammable vapors, separates the fuel from oxygen, and the water content provides a cooling effect. This combination makes AFFF exceptionally fast and effective at extinguishing difficult-to-control liquid fires, which is why it became the standard for high-risk environments like airports and military installations. However, the environmental persistence and toxicity of the PFAS used in AFFF have led to it becoming a major source of groundwater contamination at training sites.
UNESCO Nomenclature: 3309
- 环境工程
类型
化工产品
中断
革命
用法
广泛使用
前体
- 20 世纪初发明的蛋白质基灭火泡沫
- 20 世纪 50 年代 3M 公司合成氟表面活性剂
- 了解表面张力和成膜现象
- 军队需要改进喷气燃料火灾的灭火措施
应用程序
- 军事基地和机场
- 民用机场
- 炼油厂和石化厂
- 消防部门应对燃油泄漏和火灾
专利：
NA
潜在创新理念
- 采用新型碳氢化合物表面活性剂和聚合物的无氟灭火泡沫（f3）
- 用于消防训练场的空气污染与水污染防治系统
- 具有工程断裂点的可生物降解水泡沫配方
- 超声波 foam generation systems that require less concentrate
- 机器人灭火系统可以更精确地喷洒泡沫，以最大限度地减少环境排放
- 使用生物累积潜力较低的短链全氟辛烷磺酸 (pfa) 的水和泡沫 (afff) 配方（目前也正在逐步淘汰）
- 封装的 afff 剂，仅在高温下释放
- 数字孪生 models of fire scenarios to optimize foam application strategies
- 便携式电化学系统可现场销毁水污染水中的 PFA
- 源自微生物的生物表面活性剂泡沫作为绿色替代品
相关术语：AFF、消防泡沫、氟表面活性剂、PFAS、B类火灾、易燃液体、表面张力、蒸汽屏障、环境污染、灭火。
历史背景
水成膜泡沫（AFFF）
（如果日期未知或不相关，例如“流体力学”，则提供其显著出现的近似估计）
