Fluorine-free Aqueous Film Forming Foam

Abstract

Fluorine-free fire-fighting foam formulations containing primary and secondary surfactants, solvents and polymers have been evaluated using surface chemistry techniques to understand their behavior in aqueous solution, and at air/water and fuel/water interfaces in fresh and salt water. These physical measurements determine foam stability to fuel, spreading and fire performance. Experimental formulations tested in the 28ft2 MIL-PRF 24385F fire test gave extinguishment times of 36 and burnback of 477 on heptane in fresh water, and 75 extinguishment and 286 burnback on gasoline in salt water. Further work is needed to reduce extinguishment times to approach the current MIL-PRF 24385F fluorine free specification.

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Document Details

Document Type
Technical Report
Publication Date
May 18, 2020
Accession Number
AD1154604

Entities

People

  • Anne Regina
  • H. K. Schofield
  • John D. Payne
  • Katie Shelbourne
  • Lucy Richardson
  • Nigel Joslin

Tags

Communities of Interest

  • Biomedical
  • Energy and Power Technologies
  • Human Systems

DTIC Thesaurus Topics

  • Alcohols
  • Aqueous Solutions
  • Chemical Synthesis
  • Chemistry
  • Climate Change
  • Environment
  • Environmental Protection
  • Fatty Acids
  • Hydrocarbon Fuels
  • Liquid Chromatography
  • Material Degradation Processes
  • Materials Science
  • Materials Testing
  • Organic Chemistry
  • Physical Chemistry
  • Polymeric Films
  • Polymers
  • Surface Chemistry
  • Surface Tension

Readers

  • Fire Suppression Systems Design.
  • Organic Chemistry