To improve the performance of solid composite propellants(SCPs)supplemented with ammonium ni-trate(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 Kissinger-Akahira-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 im-pulse,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.

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

Energetic Propulsion Laboratory,Teaching and Research Unit of Energetic Processes,Ecole Militaire Polytechnique,BP 17,Bordj-El-Bahri,16046,Algiers,Algeria;Energetic Materials Laboratory,Teaching and Research Unit of Energetic Processes,Ecole Militaire Poly technique,BP 17,Bordj-El-Bahri,16046,Algiers,Algeria

防务技术

[1]Sabri Touidjine;Moulai Karim Boulkadid;Djalal Trache;Samir Belkhiri;Abderrahmane Mezroua;Mohamed Islam Aleg;Afaf Belkebiche-.Preparation of ammonium nitrate-based solid composite propellants supplemented with polyurethane/nitrocellulose blends binder and their thermal decomposition behavior)[J].防务技术,2022(11):2023-2033

nitrocellulose,RAMAN,densimetry,Vyazovkin,VYA

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