Action of transition metal oxides on composite solid propellants

Kishore, K.; Verneker, V. R. Pai; Sunitha, M.R.

doi:10.2514/3.7735

Cited by 31 publications

(9 citation statements)

References 8 publications

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“…Considering mass fraction and cumulative heat release, polymer binder is the main fuel. A lot of work has been done to explain the burning process and accelerating mechanism of various catalysts . According to the literature, iron compounds have particular effect on BR enhancement …”

Section: Mechanisms Of Br Enhancement and Migration Of Ferrocene‐basementioning

confidence: 99%

“…Methods to modify side groups of ferrocene can be generalized as: (1) lengthening the carbon chain of side groups to increase van der Waals interactions among molecules; (2) introducing polar groups to increase the polarity of ferrocene compounds; (3)…”

Section: Synthesis Of Ferrocene Derivativesmentioning

confidence: 99%

“…A lot of work has been done to explain the burning process and accelerating mechanism of various catalysts. [2] According to the literature, iron compounds have particular effect on BR enhancement. [71,72] Bobolev et al [73] studied the combustion process of a mixture of AP and poly (methyl methacrylate) utilizing iron, iron oxide and crystalline ferrocene as catalysts, respectively.…”

Section: Mechanism Of Br Catalysts In Accelerating the Br Of Propellantsmentioning

confidence: 99%

“…Many kinds of BR catalysts have been reported, such as transition metal oxides (TMOs), metal complexes, carbon black and related compounds, ferrocene and its derivatives and nanomaterials. Among these BR catalysts, ferrocene and its derivatives have attracted much attention due to their outstanding BR catalytic activity, broad r]ange of BR adjustment and easy modification related to their organic structure.…”

Section: Introductionmentioning

confidence: 99%

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Progress on the synthesis and catalytic and anti‐migration properties of ferrocene‐based burning rate catalysts

Zhou

Wang

et al. 2016

Applied Organom Chemis

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Burning rate catalysts are of great importance in solid composite propellants for their unique property of accelerating combustion speed. Among various kinds of burning rate catalysts, ferrocene and its derivatives exhibit excellent catalytic effects and have become the most widely used burning rate catalysts. However, these simple ferrocenyl compounds trend to migrate in solid composite propellants during storage, which causes great damage to the propellants, equipment and environment and can even affect personal safety. The exploration of novel anti‐migratory ferrocene‐based compounds has become an advanced research hotspot in the field of burning rate catalysis. This review focuses on recent progress on the synthesis and catalytic properties of ferrocene‐based polymers and ferrocene derivatives as burning rate catalysts. Two main aspects of anti‐migratory exploration, i.e. synthesis of ferrocene‐based polymers and modification of the side groups of ferrocene, are summarized. Ferrocene‐based polymers can be obtained via condensation polymerization, addition polymerization, ring‐opening polymerization, polymer reactions, etc. Ferrocenyl compounds with active groups and ferrocene‐based metal coordination compounds were developed instead of the methods of lengthening the carbon chain of side groups and improving molecular polarity. Also, possible mechanisms of burning rate catalytic activity and migration are discussed and analyzed. Finally, the key points of the development of ferrocene‐based burning rate catalysts and solid composite propellants are proposed. Copyright © 2016 John Wiley & Sons, Ltd.

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Section: Mechanisms Of Br Enhancement and Migration Of Ferrocene‐basementioning

confidence: 99%

Section: Synthesis Of Ferrocene Derivativesmentioning

confidence: 99%

Section: Mechanism Of Br Catalysts In Accelerating the Br Of Propellantsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Progress on the synthesis and catalytic and anti‐migration properties of ferrocene‐based burning rate catalysts

Zhou

Wang

et al. 2016

Applied Organom Chemis

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“…Kohga et al investigated the thermal decomposition behaviour and burning characteristics of AN/RDX based composite propellants supplemented with MnO 2 and Fe 2 O 3 and their results revealed that mixed catalysts were more promising than individual catalysts in enhancing the burning rate [22]. Kishore [23]. Also, Singh et al studied the catalytic activity of nano-MnO 2 crystals on the thermal decomposition of AP and found that it enhances the thermal decomposition [24].…”

Section: Introductionmentioning

confidence: 99%

Studies on Effect of Nano-MnO2 in HTPB-based Composite Propellant Formulations

Kshirsagar

Jain

Bhandarkar

et al. 2017

Cent. Eur. J. Energ. Mater.

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Various propellant compositions were prepared incorporating fully characterized nano-sized manganese dioxide, from 0.25 wt.% to 1.0 wt.%, in HTPB/AP/Al-based composite propellant formulations having 86 wt.% of solid loading, and its effects on the viscosity build-up, thermal, mechanical and ballistic properties were studied. The findings revealed that on increasing the percentage of nano-MnO2 in the composition, there was an increase in the end of mix viscosity, the modulus and tensile strength, while the elongation decreased accordingly. The data on the thermal properties revealed a reduction in the decomposition temperature of ammonium perchlorate (AP) as well as of the formulations based on it. The data on the ballistic properties revealed that there is an enhancement in the burning rate from 6.11 mm/s (reference composition) to 7.54 mm/s at 6.86 MPa (a 23% enhancement in the burning rate) and an increase in the pressure exponent from 0.35 (reference composition) to 0.42 with 1.0 wt.% nano-MnO2.

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Ballistic Modification of Composite Modified Double‐Base Propellants containing ammonium perchlorate

Raman

Singh

Rao

1987

Propellants Explo Pyrotec

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Ballistische Veranderungen bei ammoniumperchlorathaltigen CMDB-Treibstoffen Die Wirkung von bestimmten Blei-und Kupfersalzen organischer Sauren und von Metalloxiden auf die Abbrandgeschwindigkeit und Explosionswarme von ammoniumperchlorhaltigen CMDB-Treibstoffen wurde untersucht. Unter den Blei-und Kupfersalzen erhoht basisches Bleisalicylat die Abbrandgeschwindigkeit wahrend Bleimethylensalicylat und basisches Kupfersalicylat keine katalytische Wirkung hervorbringen. Bei den Metalloxiden haben Eisen-111-oxid und Kobaltoxid eine bessere katalytische Aktivitat als Kupfer-und Chromoxide. Durch Vernetzung der Nitrocellulose mit Isocyanat wird die katalytische Aktivitat der ballistischen Modifikatoren vermindert. Abbrandgeschwindigkeiten, die in einem Raketenmotor gemessen wurden (2-kg-Treibstoff), waren um ca. 15%-20% hoher als mit Strands in der Crawford Bombe. Modification des propriktes balistiques de propergols composites a double base modifiis (CMDB), contenant du perchlorate d'ammonium 0 VCH Verlagsgesellschaft mbH, D-6940 Weinheim, 1987

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Action of transition metal oxides on composite solid propellants

Cited by 31 publications

References 8 publications

Progress on the synthesis and catalytic and anti‐migration properties of ferrocene‐based burning rate catalysts

Progress on the synthesis and catalytic and anti‐migration properties of ferrocene‐based burning rate catalysts

Studies on Effect of Nano-MnO2 in HTPB-based Composite Propellant Formulations

Ballistic Modification of Composite Modified Double‐Base Propellants containing ammonium perchlorate

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