Accession Number : AD0902122

Title :   Research and Development of Flow-Cast Magnesium Flares

Descriptive Note : Final rept. 3 Nov 1969-3 Nov 1970

Corporate Author : DOW CHEMICAL CO MIDLAND MI

Personal Author(s) : Lane, George A ; Jankowiak, Erwin M ; Girardin, Donald

PDF Url : AD0902122

Report Date : Sep 1971

Pagination or Media Count : 54

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.

Descriptors :   *FLARES, *MAGNESIUM, ANHYDRIDES, BINDERS, BURNING RATE, CARBONATES, CASTING, CURING AGENTS, EPOXY RESINS, ESTERS, ETHERS, GLYCOLS, ILLUMINATION, NITRATES, PARTICLE SIZE, PLASTICIZERS, PYROTECHNICS, SODIUM COMPOUNDS, VISCOSITY

Subject Categories : Fabrication Metallurgy
      Plastics
      Pyrotechnics

Distribution Statement : APPROVED FOR PUBLIC RELEASE