Accession Number : ADA087209


Title :   Proton Relaxation in 1, 3, 5-Triamino-2, 4, 6-Trinitrobenzene (TATB).


Descriptive Note : Final rept. 1 Apr-31 Sep 79,


Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC


Personal Author(s) : Garroway,A N ; Resing,H A


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA087209


Report Date : 16 Jun 1980


Pagination or Media Count : 25


Abstract : The compound 1, 3, 5 triamino-2, 4, 6-trinitrobenzene (TATB) is simple yet intractable; it is virtually insoluble and sublimes with decomposition at elevated temperature. It is, however, extremely attractive in its role as an insensitive high explosive. The origin of this insensitivity is not presently known. Compressed powders of pure TATB and also bonded TATB materials are found to expand irreversibly when the temperature is cycled; it is suggested (1) that this hysteresis stems from stresses induced by the anisotropic volume expansion of TATB. The mechanism for the large c-axis thermal expansion coefficient, over eight times that of graphite, is not understood. As a step towards identifying the character of the molecular motions which may relate to mechanical insensitivity and thermal expansion, we have performed a series of proton relaxation studies in (solid) TATB over the temperature range of approximately -80 to 240 C. In brief, we find that there is very little (detectable) molecular motion below about 150 C.


Descriptors :   *NUCLEAR MAGNETIC RESONANCE , *AMINES , *RELAXATION TIME , *NITROBENZENES , MATERIALS , PROTONS , ENERGETIC PROPERTIES


Subject Categories : Physical Chemistry


Distribution Statement : APPROVED FOR PUBLIC RELEASE