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Effects of Nanometer Metal Powders on Thermal Decomposition Characteristics of RDX(PDF)

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2001年04期
Page:
420-423
Research Field:
Publishing date:

Info

Title:
Effects of Nanometer Metal Powders on Thermal Decomposition Characteristics of RDX
Author(s):
ZhaoFengqi ChenPei ① YangDong LiShangwen ① YinCuimei ①
School of Chemical Engieering,NUST,Nanjing 210094)
Keywords:
RDX thermal decomposit ion method metal pow der super-f ines chemical k-i net ics nanometer-Cu
PACS:
V512
DOI:
-
Abstract:
The effects of nanometer metal powders ( Cu, N i) , super fine metal pow ders (Al, Ni) and normal metal pow ders ( Cu, Al) on the thermal decomposition characteristics of RDX have been invest igated by DSC. Results show that the apparent act ivat ion energy of the thermal decomposit ion of RDX decreases 2. 3 kJ/ mol due to the effect of nanometer-Cu, thus reducing result s in that the peak temperature of the thermal decomposit ion of RDX by 24. 9 e dow nward. The inf luence of nanometer-Cu on the thermal decomposit ion of RDX is much g reater than that of normal Cu. Nevertheless, for other metal powders, their influences on the thermal decomposition behavior of RDX are very litt le, w hether their part icle sizes are big or small. At 0. 1, 2. 0, 6. 0MPa pressure, the change of peak shape of RDX in the mix ture of RDX/ nanometer-Cu is totally different from that of RDX. In the mix ture of RDX/ nanometer- Cu, the influence of nanometet-Cu on the peak temperature of the thermal decomposit ion characterist ics becomes w eak w ith the content of nanometer-Cu decreasing and causes the peak temperature of the thermal decomposit ion of RDX to shif t upward. However, w hen the ration of RDX to nanometer-Cu changed from 15:1 to 20:1, the peak temperature of the thermal decompsit ion of RDX shift s dow nw ard. T he mechanism of nanometer-Cu on the thermal decomposit ion characterist ics of RDX has been ex plored.

References:

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Memo

Memo:
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Last Update: 2013-03-25