Accession Number:

AD0751129

Title:

Passivation of Ammonium Nitrate Surface for Use in Minol-2

Descriptive Note:

Technical rept.

Corporate Author:

PICATINNY ARSENAL DOVER NJ

Report Date:

1972-09-01

Pagination or Media Count:

42.0

Abstract:

Prilled, spheroidized, and granular ammonium nitrate AN was coated with polychloro-p-xylylene parylene C by a vapor deposition polymerization technique. Particles of AN with a 0.2 coating remain free flowing after long exposure to ambient conditions. The effectiveness of the coating as a moisture barrier on the three forms of AN was found to be in the order, spheroids prills granules. Water adsorption isotherms and hygroscopicity determinations indicate that a 0.7 coating hydrophobes the surface of AN by approximately one order of magnitude. The parylene CAN interface exhibits chemical and physical stability Minol-2 matrix, and tends to inhibit reactivity between AN and TNT. The thermal sensitivity of Minol-2 to initiation is unaffected by a 0.7 coating.

Subject Categories:

  • Coatings, Colorants and Finishes
  • Ammunition and Explosives

Distribution Statement:

APPROVED FOR PUBLIC RELEASE