Tiếng ViệtWater-Based Film-Forming Foam – AFFF
AFFF, also known as water-based film-forming foam, is a type of fire extinguishing agent used in various fields, including aviation, marine, and industrial. It is effective in extinguishing fires involving flammable liquids such as gasoline, oil, and diesel fuel.
AFFF is a foam composed of a mixture of water, a fluorine-containing surfactant, and other chemicals. When sprayed onto a fire, the foam forms a thin, stable water film on the fuel surface, helping to contain and extinguish the fire by removing oxygen.
Fluoride-Free Synthetic Foam – SFFF
SFFF is a fluorine-free synthetic foam, a Class B fire extinguishing foam that does not contain any per/polyfluoroalkyl (PFAS) components. It was developed to gradually replace existing AFFF foam due to its safety for humans and environmental friendliness.
What is the difference between AFFF and SFFF?
The main difference between AFFF and Fluorofluorinated Synthetic Foam (SFFF) is the type of surfactant used in their formulations. AFFF contains fluorinated surfactants, which are chemicals effective in extinguishing fires involving flammable liquids.
Conversely, SFFF does not contain fluorinated surfactants and instead uses surfactants derived from natural sources, such as plant extracts. While SFFF is still effective in extinguishing fires involving flammable liquids, it may not be as effective as AFFF in certain situations.
Another important difference between AFFF and SFFF is their environmental impact. AFFF contains chemicals that can be harmful to the environment, especially when released into water sources. SFFF, on the other hand, is considered more environmentally friendly because it does not contain fluorinated surfactants.
In general, both AFFF and SFFF are effective fire extinguishing agents, but they differ in formulation and environmental impact. The choice between the two will depend on the specific application and user preferences.