Results 131 to 140 of about 317 (165)
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Industrial & Engineering Chemistry Research, 2021
In this article, hydroxyl-terminated polybutadiene (HTPB) was chemically transformed into multiamine, hydroxy polybutadiene (AEHTPB) by the adoption of appropriate synthesis strategies.
Pingan Zhang +5 more
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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.
Pingan Zhang +5 more
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Terminal functionalized hydroxyl‐terminated polybutadiene: An energetic binder for propellant
Journal of Applied Polymer Science, 2009AbstractWe report the functionalization of hydroxyl terminated polybutadiene (HTPB) backbone by covalently attaching 1‐chloro‐2, 4‐dinitrobenzene (DNCB) at the terminal carbon atoms of the HTPB. The modification of the HTPB by the DNCB does not alter the unique physico–chemical properties and the microstructure of the parent HTPB.
Rajavelu Murali Shankar +2 more
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Research of Formulation and Processing of Hydroxyl-Terminated Polybutadiene (HTPB) Propellants
Advanced Materials Research, 2014Solid composite propellants are extensively used for propulsion of rockets, missiles and space applications. The composite propellant is a polymeric matrix in which the oxidizer and fuel particles are embedded in a polymeric binder. Different composite propellant mixtures have been prepared using ammonium-perchlorate (ratio 70:30) as oxidant and ...
Slimane Bekhouche, Yun Jun Luo
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Relaxation Properties of the Solid Propellant Based on Hydroxyl-Terminated Polybutadiene
Advanced Materials Research, 2014The polymer-based propellant is a typical viscoelastic material. Better understanding of the relaxation properties of the propellant in the storage conditions is of great importance for predicting the lifetime. Due to the component complexity of the composite propellants, the transformation relation between the relaxation modulus and the complex ...
Zhi Min Xie, Si Chi Chen, You Shan Wang
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Journal of Applied Polymer Science, 1976
The copolymerization of a hydroxyl-terminated polybutadiene with isophorone diisocyanate in a propellant formulation has been studied. The kinetic rates for four different reaction temperatures have been measured both in gumstock and samples containing ammonium perchlorate.
Rena Y. Yee, Arnold Adicoff
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The copolymerization of a hydroxyl-terminated polybutadiene with isophorone diisocyanate in a propellant formulation has been studied. The kinetic rates for four different reaction temperatures have been measured both in gumstock and samples containing ammonium perchlorate.
Rena Y. Yee, Arnold Adicoff
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Polymer Engineering & Science, 1991
AbstractHydroxyl terminated polybutadine (HTPB) based composite solid propellants have gained prominence in advanced missiles and launch vehicles including the Space Shuttle's Inertial Upper Stage (IUS) motor (1). To achieve a blow‐hole free well performing casting, the knowledge of the processability characteristics and rheological behavior of the ...
R. M. Muthiah +3 more
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AbstractHydroxyl terminated polybutadine (HTPB) based composite solid propellants have gained prominence in advanced missiles and launch vehicles including the Space Shuttle's Inertial Upper Stage (IUS) motor (1). To achieve a blow‐hole free well performing casting, the knowledge of the processability characteristics and rheological behavior of the ...
R. M. Muthiah +3 more
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Engineering Fracture Mechanics, 2021
Abstract A critical part of failure analysis in solid rocket motors is understanding the fracture behavior of solid propellants. For single-edge notched tension (SENT) specimens of hydroxyl-terminated polybutadiene (HTPB) propellant, self-developed in-situ video imaging was employed to characterize the crack propagation and the crack-path morphology.
Tingyu Wang +5 more
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Abstract A critical part of failure analysis in solid rocket motors is understanding the fracture behavior of solid propellants. For single-edge notched tension (SENT) specimens of hydroxyl-terminated polybutadiene (HTPB) propellant, self-developed in-situ video imaging was employed to characterize the crack propagation and the crack-path morphology.
Tingyu Wang +5 more
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Journal of Propulsion and Power, 2001
An experimental procedure adopted for measuring the erosive burning in solid propellants under transonic and supersonic crossflow Mach numbers is explained. Three formulations of ammonium perchlorate/hydroxyl-terminated-polybutadiene propellants of different burning rates (6, 9, and 16 mm/s at 5 MPa) were used for the study.
S. Krishnan, K. Rajesh
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An experimental procedure adopted for measuring the erosive burning in solid propellants under transonic and supersonic crossflow Mach numbers is explained. Three formulations of ammonium perchlorate/hydroxyl-terminated-polybutadiene propellants of different burning rates (6, 9, and 16 mm/s at 5 MPa) were used for the study.
S. Krishnan, K. Rajesh
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Journal of Propulsion and Power, 2023
The competing flames model, also termed the Beckstead–Derr–Price model, for steady-state heterogeneous propellant combustion has been widely used but has not been sufficiently updated in decades or compared to modern propellant combustion databases. In the current study, historical competing flames modeling approaches were thoroughly documented; and ...
James C. Thomas, Eric L. Petersen
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The competing flames model, also termed the Beckstead–Derr–Price model, for steady-state heterogeneous propellant combustion has been widely used but has not been sufficiently updated in decades or compared to modern propellant combustion databases. In the current study, historical competing flames modeling approaches were thoroughly documented; and ...
James C. Thomas, Eric L. Petersen
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