An Overview of the Technological Progress in Propellants Using Hydroxyl-Terminated Polybutadiene as Binder During 2002–2012

Rufino, Simone Carvalho; Silva, Gilson da; Iha, Koshun

doi:10.5028/jatm.v5i3.242

Cited by 9 publications

(3 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…HTPB propellant is a type of composite solid propellant with hydroxyl-terminated polybutadiene (HTPB) as a polymeric binder. Because of its technical maturity, low cost, and good combination property, it is widely applied to various strategic and tactical solid missiles. − At present, the propellant is developing toward high thrust and strong antioverload capability, which requires the solid propellant used to have both high energy density and good mechanical properties. , Meanwhile, in practice, some new booster rockets and cruise missile engines also need the propellant to have a lower burning rate to ensure long-term sustained and stable thrust. , …”

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.

View full text Add to dashboard Cite

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.

show abstract

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.

View full text Add to dashboard Cite

show abstract

“…As oxidizing anions such as perchlorate have a high oxygen content, they promote the combustion and gasification of these salts, and the production of small molecules such as CO 2 (Da Silva et al, 2013). The amount of residue formed after the combustion and decomposition of these salts is expected to be low.…”

Section: Introductionmentioning

confidence: 99%

Crystallographic study of the energetic salt 1,2,4-triazolium perchlorate

Kumasaki¹,

Gontani²,

Mori³

et al. 2021

Acta Crystallogr C

View full text Add to dashboard Cite

The molecular and crystal structure of 1H-1,2,4-triazolium perchlorate, C2H4N3 +·ClO4 −, was determined as detailed crystallographic data had not been available previously. The structure has monoclinic (P21/m) symmetry. It is of interest in the field of energetic compounds because nitrogen-rich azoles are the backbone of high-density energetic compounds, and salt-based energetic materials can exhibit preferential energy-release behaviour. The bond angles of the 1,2,4-triazolium cation in this study were similar to those of a cationic triazole ring reported previously and were different from those of the neutral triazole ring. This study contributes to the available data that can be used to analyse the relationship between the structures and properties of energetic materials.

show abstract

“…One of the most common and thoroughly investigated prepolymers is hydroxyl-terminated polybutadiene (HTPB) that is used in the common formulation Al/AP/HTPB in many applications [2]. In contrast to non-energetic prepolymers like HTPB, prepolymers containing energetic functional groups, for instance azido (ÀN 3 ), nitro (ÀNO 2 ), nitrate ester (ÀONO 2 ) and nitramine (ÀNNO 2 ), are able to supply additional energy to the combustion process, and are therefore attractive binder components for tomorrow's generation of rocket and gun propellants.…”

Section: Introductionmentioning

confidence: 99%

Copolymers based on GAP and 1,2‐Epoxyhexane as Promising Prepolymers for Energetic Binder Systems

Hafner

Keicher

Klapötke

2017

Propellants Explo Pyrotec

View full text Add to dashboard Cite

Copolymers of epichlorohydrin (ECH) and 1,2‐epoxyhexane (EpH) have been synthesized via cationic ring‐opening polymerization using BF3×THF as a catalyst. Structures of the resulting polymers have been confirmed by IR and NMR spectroscopy and GPC. In a subsequent reaction with NaN3 in DMSO, the halogenated precursors were completely azidated, which was confirmed by the same spectroscopic methods. The introduced pendant n‐butyl chains act as an internal plasticizer by lowering the glass transition temperature (Tg) of the copolymers compared to the reference compound glycidyl azide polymer (GAP). Compared to GAP in a similar molecular weight range, the copolymers also showed reduced viscosity. These properties make the described copolymers interesting candidates for use as energetic binders in cast‐cure applications.

show abstract

An Overview of the Technological Progress in Propellants Using Hydroxyl-Terminated Polybutadiene as Binder During 2002–2012

Cited by 9 publications

References 11 publications

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

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

Crystallographic study of the energetic salt 1,2,4-triazolium perchlorate

Copolymers based on GAP and 1,2‐Epoxyhexane as Promising Prepolymers for Energetic Binder Systems

Contact Info

Product

Resources

About