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3748495 
Journal Article 
Application Characteristics of Ammonium Dinitramide to HTPB Composite Propellants 
Xu, H; Zhao, FQi; Pang, W; Guo, H; Sun, Z; Fan, X 
2014 
Yes 
Asian Journal of Chemistry
ISSN: 0970-7077
EISSN: 0975-427X 
26 
13 
3995-3999 
English 
WOS:000343763700052 
In order to reduce signal and increase energy of HTPB composite propellants, ammonium dinitramide (ADN) was applied to this formulation. Using SEM, vacuum stability test (VST) and other standard methods, mechanical sensitivity, thermal stability and combustion properties of HTPB/ADN propellant were tested. Results show that the mechanical sensitivity of HTPB/ADN propellants increase for higher friction sensitivity and impact sensitivity of ammonium dinitramide, while effect of ammonium dinitramide on mechanical sensitivity of propellants is less by replacing part of RDX. The amount of gas produced by ammonium dinitramide is greater than ammonium perchlorate (AP) in vacuum stability test, which reduce thermal stability of HTPB/ADN propellants. Under the pressure of 4-15 MPa, the pressure exponent of burning rate (n) of this propellants reach 0.70, which is higher than that of HTPB/AP propellants, while after adding ironbased catalyst, burning rate can be reduced to 0.60 or less. The combustion wave structure of this propellants is same as that of HTPB/AP propellants, but the slope of T-t curves increase more with pressure increasing. 
Ammonium dinitramide; HTPB/ADN propellant; Mechanical sensitivity; Thermal stability; Combustion wave structure