Research and Development of Flow-Cast Magnesium Flares
Final rept. 3 Nov 1969-3 Nov 1970
DOW CHEMICAL CO MIDLAND MI
Pagination or Media Count:
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 BDNPAF, 1-1-solution of bis-2,2-dinitropropyl acetal and bis2,2-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-secg candle-seconds per gram at 0. 056 insec inch per second burning rate in a 1.25-inch-diameter tape-wrapped flare.
- Fabrication Metallurgy