Research on fire-resistant diesel fuel flammability mitigation mechanisms. Interim report, 13 May 1980-31 December 1982
The development of aqueous fire-resistant diesel fuel (FRF) microemulsions has been reported previously. Flammability and ballistic tests reveal diminished mist flammability, and such tests demonstrate rapid self-extinguishment of pool fires even at temperatures above the base fuel flash point. A basic study has been conducted to develop an improved understanding of the mechanisms by which such self-extinction occurs. An ignition-limits apparatus was developed, utilizing an evacuatable autoclave at one atmosphere. Measurements made with diesel fuel vapor in air, diluted with various amounts of water vapor, established that such mixtures containing more than about 24 mole% water vapor cannot burn. Vapor pressure measurements, made in a modification of the same apparatus, confirmed that FRF systems containing 10 vol% water and 6 vol% surfactant are blanketed by equilibrium vapors containing at least 24 mole% water for liquid temperatures greater than about 70 C. The flash points of diesel fuel FRF blends containing 10% water are about the same as those of the base fuel when its flash point is less than about 70 C. When the base fuel flash point exceeds 70 C, no flash point is detectable for the FRF.
- Research Organization:
- Southwest Research Inst., San Antonio, TX (USA). Army Fuels and Lubricants Research Lab.
- OSTI ID:
- 5394671
- Report Number(s):
- AD-A-130743/8; AFLRL-165
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
DIESEL FUELS
COMBUSTION PROPERTIES
FIRE RESISTANCE
ADDITIVES
AMIDES
DIESEL ENGINES
EMULSIONS
FLAMMABILITY
IGNITION
MATERIALS
VAPOR PRESSURE
COLLOIDS
DISPERSIONS
ENGINES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
023000* - Petroleum- Properties & Composition