Accession Number : AD0902122
Title : Research and Development of Flow-Cast Magnesium Flares.
Descriptive Note : Final rept. 3 Nov 69-3 Nov 70,
Corporate Author : DOW CHEMICAL CO MIDLAND MI
Personal Author(s) : Lane, George A. ; Jankowiak, Erwin M. ; Girardin, Donald
Report Date : SEP 1971
Pagination or Media Count : 52
Abstract : Research and development studies have been conducted on flow-castable magnesium-sodium nitrate flares. The epoxy resins XFS-4008L (glycerin diglycidyl ether) and diglycidyl carbonate were evaluated. The curing agents XF-4012 (partial nitrate salt of amine-terminated polypropylene glycol), maleic anhydride (MA), maleic anhydride-ethylene carbonate (EC), maleic half esters, glycol, benzyldimethylamine and D.E.H. 24 (triethylenetetramine) were investigated. TEGDN (triethyleneglycol dinitrate), DEGDN (diethyleneglycol dinitrate), and BDNPA/F, 1-1-solution of bis-(2,2-dinitropropyl) acetal and bis(2,2-dinitropropyl) formal, were tested as plasticizers. The most favourable results were obtained with XFS-4008L resin; XF-4012, MA, EC-MA, or D.E.H. 24 curing agent; and TEGDN or DEGDN plasticizer. Flare compositions containing these binders can be mixed, poured, and cured; display low spark or impact sensitivity; and are adequately stable in storage at 70 C for 4 to 12 weeks. A 'best efforts' composition, containing 22 percent of XFS-4008L - EC-MA - DEGDN binder, yielded an efficiency of 70,000 cd-sec/g (candle-seconds per gram) at 0.056 in/sec (inch per second) burning rate in a 1.25-inch-diameter tape-wrapped flare. (Author)
Descriptors : (*FLARES, ILLUMINATION), (*MAGNESIUM, CASTING), SODIUM COMPOUNDS, NITRATES, ETHERS, PYROTECHNICS, EPOXY RESINS, BINDERS, ESTERS, ANHYDRIDES, PLASTICIZERS, GLYCOLS, CURING AGENTS, CARBONATES, PARTICLE SIZE, VISCOSITY, BURNING RATE.
Subject Categories : Fabrication Metallurgy
Distribution Statement : APPROVED FOR PUBLIC RELEASE