Research and Development of Flow-Cast Magnesium Flares
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1971
- Accession Number
- AD0902122
Entities
People
- Donald Girardin
- Erwin M. Jankowiak
- George A. Lane