Ageing studies on AP/HTPB based composites solid propellants

Naseem, Hamza; Yerra, Jyothsna; Murthy, H.; Ramakrishna, P. A.

doi:10.1016/j.enmf.2021.02.001

Cited by 51 publications

(22 citation statements)

References 87 publications

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“…FT-IR spectroscopy was utilized to quantify the extent of HTPB reaction with IPDI to polyurethane [117,118]. The relative ratio of absorbance of the FT-IR bands at 1710 cm À 1 (À C=O stretching of urethane) with that of the peak at 966 cm À 1 [À C=C-(trans) vibration of HTPB], i. e., A 1710 /A 966 was compared, and the extent of urethane content was calculated [119,130].…”

Section: Infrared Spectroscopy (Ft-ir)mentioning

confidence: 99%

Properties of Hydroxyl‐Terminal Polybutadiene (HTPB) and Its Use as a Liner and Binder for Composite Propellants: A Review of Recent Advances

Amado

Ross

Murakami

et al. 2022

Propellants Explo Pyrotec

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This paper reviews hydroxyl-terminal polybutadiene (HTPB) used as liner and binder for composite propellants, applied in rocket motors studied throughout the last decades, emphasizing the recent advances. The contribution aims to show the importance of HTPB in the propellant composition and on the liner coating of the rocket motor, which is in contact with the propellant grain. This paper also shows that many researchers have thoroughly studied several properties of HTPB, which are rele-vant to its role in liners and propellants. We have also reviewed analytical techniques such as Fourier Transform Infrared Spectroscopy (FTIR) as a characterization technique for HTPB and HTPB-based polyurethanes. Reflection and transfectants FTIR may be a future trend in studies about polymeric matrices for liners and propellants, and in the area of propellant formulations that use energetic binders, graphene and nanomaterials.

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Section: Infrared Spectroscopy (Ft-ir)mentioning

confidence: 99%

Properties of Hydroxyl‐Terminal Polybutadiene (HTPB) and Its Use as a Liner and Binder for Composite Propellants: A Review of Recent Advances

Amado

Ross

Murakami

et al. 2022

Propellants Explo Pyrotec

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“…1A). 3,4 and they can well improve the mechanical properties of the material but with an undesirable decrease in the energy. In contrast, energetic plasticizers (EPs) could enable the formulations with higher energy and oxygen balance than those of inert plasticizers due to the existence of abundant energetic groups (such as nitro, nitrate, azido, etc. )…”

Section: Introductionmentioning

confidence: 99%

Recent advances in the synthesis and properties of energetic plasticizers

Chen

Zhang

2022

New J. Chem.

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Section: Introductionmentioning

confidence: 99%

“…One key parameter considered in the evaluation of the effectiveness of a bonding agent regards the tensile strength and the elongation at break of the SRP [1,6]. Additionally, other methods rely on surface tension evaluation [1,6], differential scanning calorimetry [7] and accelerated ageing of the CSRP [8]. This work shows an innovative approach in the evaluation and in the selection of the bonding agents based on the application of Reichardt's solvent polarity scale [9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Application of Reichardt’s Solvent Polarity Scale (ET(30)) in the Selection of Bonding Agents for Composite Solid Rocket Propellants

Cataldo¹

2022

Liquids

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Bonding agents (BA) are key compounding ingredients for the correct formulation of composite solid rocket propellants (CSRP). In particular, the addition of BA is essential to achieve suitable mechanical properties of CSRP in terms of adequate tensile strength and elongation at the break. It is shown that the polarity of each conventional BA as well as new potential BA can be measured through the Reichardt’s ET(30) polarity scale. Using this methodology, it was possible to propose a substitute for MAPO (tris-(methylaziridinyl)-phosphine oxide), a conventional BA with the drawback of high toxicity and high reactivity, with TTPT (tris-(pyrrolidine)-phosphine oxide), a completely safe and effective BA. In this work, several other potential BA were evaluated through the Reichardt’s ET(30) polarity scale but only a selection of the potential BA were effectively tested in a standard CSRP. The evaluation of TTPT vs. MAPO showing the ability of the former BA to match the mechanical properties of the latter BA was particularly interesting. A reasonable correlation between the elongation at break of the CSRP and the ET(30) value of the BA used in the compound was found.

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Ageing studies on AP/HTPB based composites solid propellants

Cited by 51 publications

References 87 publications

Properties of Hydroxyl‐Terminal Polybutadiene (HTPB) and Its Use as a Liner and Binder for Composite Propellants: A Review of Recent Advances

Properties of Hydroxyl‐Terminal Polybutadiene (HTPB) and Its Use as a Liner and Binder for Composite Propellants: A Review of Recent Advances

Recent advances in the synthesis and properties of energetic plasticizers

Application of Reichardt’s Solvent Polarity Scale (ET(30)) in the Selection of Bonding Agents for Composite Solid Rocket Propellants

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