Enhancement of stabilizing properties of double-base propellants using nano-scale inorganic compounds

Zayed, M.A.; El-Begawy, Salah E.M.; Hassan, Hossam E.S.

doi:10.1016/j.jhazmat.2012.05.050

Cited by 32 publications

(14 citation statements)

References 14 publications

(20 reference statements)

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“…Because of its chemical instability, such energetic component should contain some stabilizing agent to avoid a number of degradation phenomena that can lead to autocatalytic decomposition, self-heating as well as cook-off safety hazards, and consequently negatively affect both in-service time and reliability of the formulations [7][8][9]. The common stabilizers for nitrate esters-based energetic materials belong to anilinebased compounds such as diphenylamine (DPA), 2-nitrodiphenylamine (2-NDPA) and p-nitro-N-ethylaniline, (N-(2methoxyethyl)-p-nitroaniline (MENA), N,N'-diethyl-N,N'-diphenylurea (C1, EC, ethyl centralite), N,N'-dimethyl-N,N'-diphenylurea(C2, MC, methyl centralite) and N-methyl N',N'diphenylurea (AK-II) [10,11]. These additives act by removing nitrogen oxides formed during nitrate esters decom-position.…”

Section: Introductionmentioning

confidence: 99%

New Insights on the Compatibility of Nitrocellulose with Aniline‐Based Compounds

Trache

Tarchoun

Chelouche

et al. 2019

Propellants Explo Pyrotec

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In this paper, the compatibility of nitrocellulose (NC) with some aniline‐based stabilizers was studied in order to detect any interaction between these materials. Both thermal techniques [differential scanning calorimetry (DSC) and vacuum stability test (VST)], and supplementary non‐thermal techniques [Fourier transform infrared spectroscopy (FTIR), X‐ray diffraction (XRD) and densimetry] were used. The thermal and non‐thermal measurements showed that NC was highly compatible with N‐(2‐methoxyethyl)‐p‐nitroaniline (MENA) and diphenylamine (DPA), while a degree of incompatibility is indicated for N‐(2‐acetoxymethyl)‐p‐nitroaniline (ANA). The compatibility of the different mixtures was further probed by the kinetic investigation, and the activation energy and the pre‐exponential factors were computed. A detailed discussion and comparison of the compatibility results from all the methods are made.

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Section: Introductionmentioning

confidence: 99%

New Insights on the Compatibility of Nitrocellulose with Aniline‐Based Compounds

Trache

Tarchoun

Chelouche

et al. 2019

Propellants Explo Pyrotec

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“…The most commonly used kinetic expressions to explain the solid/liquid adsorption processes are the pseudo-first-order kinetic and pseudo-second-order kinetic models [7][8][9][10]. A good number of works were reported where the modifications of these natural clays with nanoparticles were produced to carry out the adsorption of metals from aqueous solutions [8,[11][12][13][14][15][16][17][18]. These minerals offer low-cost, effective supports for nano-scale entities.…”

Section: Introductionmentioning

confidence: 99%

Kinetic Adsorption Study of Silver Nanoparticles on Natural Zeolite: Experimental and Theoretical Models

Ruíz-Baltazar

Pérez

2015

Applied Sciences

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Abstract:In this research, the adsorption capacity of Ag nanoparticles on natural zeolite from Oaxaca is presented. In order to describe the adsorption mechanism of silver nanoparticles on zeolite, experimental adsorption models for Ag ions and Ag nanoparticles were carried out. These experimental data obtained by the atomic absorption spectrophotometry technique were compared with theoretical models such as Lagergren first-order, pseudo-second-order, Elovich, and intraparticle diffusion. Correlation factors R 2 of the order of 0.99 were observed. Analysis by transmission electron microscopy describes the distribution of the silver nanoparticles on the zeolite outer surface. Additionally, a chemical characterization of the material was carried out through a dilution process with lithium metaborate. An average value of 9.3 in the Si/Al ratio was observed. Factors such as the adsorption behavior of the silver ions and the Si/Al ratio of the zeolite are very important to support the theoretical models and establish the adsorption mechanism of Ag nanoparticles on natural zeolite.

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“…The effects of CL-20 and RDX on basic properties of CMDB propellants were investigated, the major findings could be summarized as follows: 1) The calculations on energetic properties for CL-20/RDX-CMDB propellants showed that energetic properties of propellant with CL-20 were superior to of propellant with RDX. 2) The data on burning rate revealed that with the increase of RDX/CL-20 mass fraction in the propellants, the burning rates at low pressure (2-8 MPa) remained almost the same but differ observably at high pressure (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22). With the increase of CL-20 mass fraction in the propellants, the burning rates of propellants could be enhanced significantly, but the burning rates of propellants containing RDX decreased.…”

Section: Resultsmentioning

confidence: 96%

“…Hexanitro hexaazaisowurtzitane (HNIW or CL-20) is superior to hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) and cyclo-tetra-methylenetetranitramine (HMX) with respect to density, enthalpy of formation, and oxygen balance [6][7][8][9]. CL-20 has evoked interest as a promising candidate, replacing various energetic compounds such as RDX, HMX and ammonium perchlorate (AP), for realizing the eco-friendly, high-performance, highspecific impulse(Isp), minimum signature propellants for futuristic missiles and space missions [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Study on Comparative Performance of CL‐20/RDX‐based CMDB Propellants

Yang

Zheng

Zhang

2019

Propellants Explo Pyrotec

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The energy, combustion and combustion residues properties of composite modified double‐base (CMDB)propellants with CL‐20 were compared to those propellants with RDX. The energy characteristic of CL‐20/RDX‐CMDB propellants had also been calculated theoretically based on the principle of minimum free energy. The energy property of propellants with CL‐20 was found to be evidently enhanced in comparison to those propellants containing RDX. The findings on combustion properties revealed that the combustion properties of CL‐20‐CMDB propellants were contrary to the of RDX‐CMDB propellants. With the mass fraction of CL‐20 increasing in the propellants, the burning rates of propellants can be enhanced significantly, but the burning rates of propellants containing RDX decreased. Analysis of the combustion residues for CL‐20/RDX‐CMDB propellants revealed that the C, Cu and Pb elements aggregated on combustion surface, which may be useful for guiding the regulation of combustion performance of high‐performance CMDB propellants containing CL‐20.

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Enhancement of stabilizing properties of double-base propellants using nano-scale inorganic compounds

Cited by 32 publications

References 14 publications

New Insights on the Compatibility of Nitrocellulose with Aniline‐Based Compounds

New Insights on the Compatibility of Nitrocellulose with Aniline‐Based Compounds

Kinetic Adsorption Study of Silver Nanoparticles on Natural Zeolite: Experimental and Theoretical Models

Study on Comparative Performance of CL‐20/RDX‐based CMDB Propellants

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