Thermal Decomposition of New and Aged LX-04 and PBX 9501

Tran, T. D. ; Tarver, Craig M. ; Idar, D. J. ; Rodin, W. A.

Lawrence Livermore National Laboratory

关键词: Aging;    Binders;    Pyrolysis;    Kinetics;    Time Measurement;   

DOI  :  10.2172/15004649
RP-ID  :  UCRL-JC-147459-REV-1
RP-ID  :  W-7405-ENG-48
RP-ID  :  15004649

美国|英语

来源: UNT Digital Library

【 摘 要 】

One-Dimensional-Time-To-Explosion (ODTX) experiments were conducted to study the thermal decomposition of new and aged LX-04, PBX 9501, HMX class 1 and class 2, Estane and EstaneBDNPA-F (PBX 950 1 plasticized-binder) materials. New and aged LX-04 showed comparable decomposition kinetics. The data for aged PBX 9501 showed slightly longer explosion times at equivalent temperatures. Analysis of the error in time measurement is complicated by several experimental factors but the small time change appears to be experimentally significant. The results suggest that aged PBX 9501 is slightly more thermally stable. The thermal decomposition of these materials were modeled using a coupled thermal and heat transport code (chemical TOPAZ) using separate kinetics for HMX and binder decomposition. The current kinetic models describe the longer explosion times by the loss of plasticizer-binder constituent, which was more thermally reactive.