Research Advances in Bonding Agents for Composite Propellants

Yadav, Anil Kumar; Pant, Chandra Shekhar; Das, Sushanta K.

doi:10.1002/prep.201900329

Cited by 52 publications

(26 citation statements)

References 20 publications

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“…The role of bonding agents is to adsorb on the surface of the explosive crystals and create chemical bonds with the binder [ 38 ]. Bonding agents such as aziridine derivatives, hydantoin derivatives, borate esters, isocyanurates, ferrocene derivatives and others are described [ 43 , 44 ].…”

Section: Implementation Of Polysiloxanes In Pbx Explosives—currentmentioning

confidence: 99%

A Review of Polysiloxanes in Terms of Their Application in Explosives

2021

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Polysiloxanes are reviewed for their properties depending on the functionalization of a silicon–oxygen backbone chain. Next, the properties were referred to the requirements that polymers used in plastic/polymer-bonded explosive (PBX)-type explosives must meet. Finally, the current state and prospects for the implementation of polysiloxanes in plastic/polymer-bonded explosive (PBX) formulations are presented.

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Section: Implementation Of Polysiloxanes In Pbx Explosives—currentmentioning

confidence: 99%

A Review of Polysiloxanes in Terms of Their Application in Explosives

2021

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“…However, as a nonpolar binder, HTPB does not has strong interfacial bonding with polar fillers, and thus undergoes dewetting (debonding) upon deformation. Dewetting will adversely affect the mechanical properties, combustion performance, and storage stability of the propellant. , To improve the performance of the propellant, it is usually necessary to add a variety of functional additives to the propellant formulation, for example, bonding agents, , burning-rate modifiers, , process additives, and plasticizers . However, this makes the propellant composition more complicated and it is more difficult to control quality.…”

Section: Introductionmentioning

confidence: 99%

Chemical Modification of Hydroxyl-Terminated Polybutadiene and Its Application in Composite Propellants

Zhang

Tan

Zhang³

et al. 2021

Ind. Eng. Chem. Res.

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In this article, hydroxyl-terminated polybutadiene (HTPB) was chemically transformed into multiamine, hydroxy polybutadiene (AEHTPB) by the adoption of appropriate synthesis strategies. The structure of AEHTPB was confirmed by Fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance (NMR). The modification degree was altered by adjusting reaction conditions to find out the effect of structural change on various physical properties, including the viscosity and glass transition temperature (T g ) of AEHTPB. Adding AEHTPB to the HTPB binder system could improve the cross-link density and strength of the polyurethane elastomer. Meanwhile, the experiment results indicated that AEHTPB could inhibit the low-temperature decomposition of ammonium perchlorate (AP) by forming a dense coating on the surface of AP. Then, the propellant level studies were conducted with the use of AEHTPB/HTPB mixture as a binder. As a result, the burning rate of propellant containing AEHTPB (5 wt %) was found to be reduced by 10.8% compared to HTPB-based propellant, and the mechanical properties of the propellant were superior to those of HTPB-based propellant with an improvement of 46.2% in tensile strength and 35.1% enhancement in elongation at break. Finally, tensile testing and observation of fracture surface morphology further demonstrated that AEHTPB had a significant bonding effect on AP-based propellant.

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“…An application of active binder in contrast to inert binder allows improving propellants ignition properties, but, at the same time, complicates burning rate regulation [18,19]. An introduction of metal or oxide catalysts has proven to be an effective solution to the burning rate adjusting for different SP [20,21].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Aluminum Powders: IV. Effect of Nanometals on the Combustion of Aluminized Ammonium Nitrate‐Based Solid Propellants

Gromov

Popenko

Sergienko

et al. 2021

Propellants Explo Pyrotec

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This study is devoted to the investigation of the energetic properties of two types of aluminized solid propellants with inert and active binders modified by additives of six different metal nanopowders. The substitution of an inert binder for the active one resulted in significant improvement of energetic properties. However, burning rate regulation become more complicated because the pressure exponent in burning rate law was increased as well. The DSC analysis revealed that the most significant catalytic effects were observed while using Zn, Cu, and Mo powders. Combustion of compositions based on an inert combustible binder and ammonium nitrate was studied in the pressure range 0.1–10.0 MPa. Due to the low combustion rate, no dispersion of burning aluminum particles was observed. During combustion, a single agglomerate of aluminum particles was formed, the mass of which was about 96 % of the initial aluminum mass in the formulation. A comparative analysis of nanosized metal additive effect on the propellant's combustion process was performed. It had been found that the activity of the metal nanopowders depends on the propellant formulation. It had been shown that Al and Zn did not affect the combustion rate of propellant with inert binder but they were effective in compositions with an active binder. Cu and Ni were found to be a good catalyst for the ammonium nitrate and active binder decomposition.

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Research Advances in Bonding Agents for Composite Propellants

Cited by 52 publications

References 20 publications

A Review of Polysiloxanes in Terms of Their Application in Explosives

A Review of Polysiloxanes in Terms of Their Application in Explosives

Chemical Modification of Hydroxyl-Terminated Polybutadiene and Its Application in Composite Propellants

Characterization of Aluminum Powders: IV. Effect of Nanometals on the Combustion of Aluminized Ammonium Nitrate‐Based Solid Propellants

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