Suppression of Evaporation of Hydrocarbon Liquids and Fuels by Films Containing Aqueous Film Forming Foam (AFFF) Concentrate FC-196
Abstract
Suppression of evaporation of hydrocarbon liquids and fuels by aqueous films containing a fluorocarbon surfactant has been examined as a function of film thickness, time, and hydrocarbon type. The hydrocarbon liquids included the homologous series of n-alkanes from pentane to dodecane, aromatic compounds, motor and aviation gasolines and jet fuels JP-4 and JP-5, and Navy distillate fuel. The surfactant solution used to form the films was a 6% solution of Aqueous Film Forming Foam (AFFF) concentrate FC-196. Films of the surfactant solution, ranging in thickness from 5 to 100 micrometers, were placed on the surface of the hydrocarbon liquid to test the ability of the film to suppress evaporation over a 1-hr period. Results indicated that for the n-alkanes and the hydrocarbon fuels a certain critical thickness of surfactant solution was required for optimum vapor suppression. In comparison with the n-alkanes, it was considerably more difficult to suppress evaporation of the aromatic compounds.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 31, 1974
- Accession Number
- ADA006650
Entities
People
- James C. Burnett
- Joseph T. Leonard
Organizations
- United States Naval Research Laboratory