Thermal stability and kinetic of decomposition of nitrated HTPB.
Thermal stability and kinetic of decomposition of nitrated HTPB.
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DOI：
10.1016/j.jhazmat.2009.08.040
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发表时间：
2009-12
影响因子：
13.6
通讯作者：
Qingfa Wang;Li Wang;Xiangwen Zhang;Zhen-tao Mi
中科院分区：
文献类型：
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作者：
Qingfa Wang;Li Wang;Xiangwen Zhang;Zhen-tao Mi
硝化HTPB （NHTPB）是一种有潜力取代传统惰性HTPB的高能粘结剂，用于复合固体推进剂和塑料粘结炸药（PBXs）。采用高压差示扫描量热计（PDSC）测量了10%双键转化为硝酸酯基（10% NHTPB）的NHTPB样品的热稳定性。研究了压力（0.1、2.5和5.0MPa）和升温速率（4、6、8和10°Cmin−1）对10% NHTPB样品DSC行为的影响。该化合物的分解温度随着压力的增加而降低，同时随着升温速率的增加而升高。在150 ~ 250℃的热分解遵循一阶规律。采用ASTM E698和Flynn-Wall-Ozawa提出的非等温方法，从DSC数据中获得了10% NHTPB样品在150 ~ 250℃环境压力下的动力学参数和热力学参数。该化合物的临界温度估计在154℃左右。
Nitrated HTPB (NHTPB) is a potential energetic binder to replace the conventional inert binder, HTPB, for the composite solid propellants and plastic bonded explosives (PBXs). The thermal stability of the NHTPB sample with 10% double bonds converted to dinitrate ester group (10% NHTPB) was evaluated by high-pressure differential scanning calorimeter (PDSC) measurement. The influences of pressure (0.1, 2.5 and 5.0MPa) and the heating rate (4, 6, 8 and 10°Cmin−1) on the DSC behavior of the 10% NHTPB sample were investigated. The decomposition temperature of this compound decreased with the increase of pressure, meanwhile, increased as the heating rate increasing. The thermal decomposition at 150–250°C followed a first-order law. The kinetic parameters and thermodynamic parameters for the 10% NHTPB sample at 150–250°C under ambient pressure were obtained from the DSC data by non-isothermal methods proposed by ASTM E698 and Flynn–Wall–Ozawa. The critical temperature for this compound was estimated at about 154°C.