Preparation of ammonium nitrate-based solid composite propellants supplemented with polyurethane/nitrocellulose blends binder and their thermal decomposition behavior  

作　　者：Sabri Touidjine Moulai Karim Boulkadid Djalal Trache Samir Belkhiri Abderrahmane Mezroua Mohamed Islam Aleg Afaf Belkebiche 

机构地区：[1]Energetic Propulsion Laboratory,Teaching and Research Unit of Energetic Processes,Ecole Militaire Polytechnique,BP 17,Bordj-El-Bahri,16046,Algiers,Algeria [2]Energetic Materials Laboratory,Teaching and Research Unit of Energetic Processes,Ecole Militaire Polytechnique,BP 17,Bordj-El-Bahri,16046,Algiers,Algeria

出　　处：《Defence Technology（防务技术）》2022年第11期2023-2033,共11页Defence Technology

摘　　要：To improve the performance of solid composite propellants(SCPs)supplemented with ammonium nitrate(AN)as an oxidizer,the incorporation of energetic ingredients such as explosives,energetic binders or catalysts is a common effective approach.For this purpose,polyurethane(PU),a typical inert binder,was mixed with nitrocellulose(NC)as an energetic polymer.Numerous composite solid propellant compositions based on AN and NC-modified polyurethane binder with different NC ratios were prepared.The prepared formulations were characterized using Fourier transform infrared spectroscopy(FTIR),RAMAN spectroscopy,X-ray diffraction(XRD),electron densimetry,thermogravimetric(TG)analysis,and differential scanning calorimetry(DSC).A kinetic study was then performed using the iterative KissingerAkahira-Sunose(It-KAS),Flynn-Wall-Ozawa(It-FWO),and non-linear Vyazovkin integral with compensation effect(VYA/CE)methods.The theoretical performances,such as theoretical specific impulse,adiabatic flame temperature,and ideal exhaust gaseous species,were also determined using the NASA Lewis Code,Chemical Equilibrium with Application(CEA).Spectroscopic examinations revealed the existence of NC and full polymerization of PU in the prepared propellants.According to density tests,the density of the propellant increases as the nitrocellulose component increases.According to the thermal analysis and kinetics study,the increase in NC content catalyzed the thermal decomposition of the AN-based composite solid propellants.Based on the theoretical study,increasing the amount of NC in the propellant increased the specific impulse and,as a result,the overall performance.

关 键 词：Composite propellants POLYURETHANE NITROCELLULOSE Ammonium nitrate Decomposition kinetics Thermal decomposition 

分 类 号：V512.3[航空宇航科学与技术—航空宇航推进理论与工程]