Results 161 to 170 of about 2,333 (214)
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Thermal decomposition of HTPB/AP and HTPB/HMX mixtures with low content of oxidizer
Journal of Thermal Analysis and Calorimetry, 2014In this paper, hydroxyl-terminated polybutadiene (HTPB)/ammonium perchlorate (AP) and HTPB/cyclotetramethylene tetranitramine (HMX) mixtures with low content of oxidizer were prepared, and the thermal decomposition process of these mixtures was investigated with TG-FTIR and Raman spectrum.
Lin-Lin Liu, Liu Lin-Lin
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Synthesis and characterization of lignin–HTPB copolyurethane
European Polymer Journal, 2001Abstract Lignin–HTPB copolyurethanes have been synthesized from hydroxyl terminated polybutadiene (HTPB) and varied quantities of lignin and toluene diisocyanate. IR spectroscopy and estimation of isocyanate groups have established the formation of HTPB polyurethane and lignin–HTPB copolyurethane.
Basudam Adhikari
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Accelerated Aging Tests of HTPB-Based Propellants
, 2018 In the late twentieth century, liquid and solid propulsion technologies have been integrated into hybrid engines currently apllied in propulsion launch vehicles and missiles. The reaction of polyol (HTPB) and diisocyanate (IPDI) provides the most versatile of the binders in the production of solid propellants due to its ability to withstand high loads ...
Roberta Jachura Rocha
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Rheokinetic modeling of HTPB–TDI and HTPB–DOA–TDI systems
Journal of Applied Polymer Science, 2003AbstractA study of the effect of temperature on a mixture of polymer and curative in the processing of rocket propellants is reported. Experimental viscosity of a hydroxyl‐terminated polybutadiene–toluene diisocyanate (HTPB–TDI) system was measured using a Brookfield viscometer model DV III.
B. M. Bandgar +3 more
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Journal of Spacecraft and Rockets, 1981
Three HTPB propellants, varying in solids loading from 88% to 91%, were selected and developed for evaluation studies including aging. The 88%-solids propellant was verified to fit a previously developed aging model. The aging model has been further successfully applied to the measured mechanical-property aging data for the higher-solids propellants ...
A.G. Christiansen +2 more
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Three HTPB propellants, varying in solids loading from 88% to 91%, were selected and developed for evaluation studies including aging. The 88%-solids propellant was verified to fit a previously developed aging model. The aging model has been further successfully applied to the measured mechanical-property aging data for the higher-solids propellants ...
A.G. Christiansen +2 more
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Effects of HTPB with Different Molecular Weight on Mechanical Properties of HTPB/TDI System
Advanced Materials Research, 2013t is found that the molecular weight of Hydroxy-terminated polybutadiene (HTPB) influences curing behaviors of HTPB/2,4-toluene diisocyanate (TDI) system and the mechanical properties of PBXs. Effects of the molecular weight of HTPB on the viscose viscosity,the cure time, and mechanical properties of polymer were studied by brookfield viscometer ...
Chun Yan Chen +2 more
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HNF/HTPB BASED COMPOSITE PROPELLANTS
International Journal of Energetic Materials and Chemical Propulsion, 2002In a search for new storable high performance propellants for the European Space Agency (ESA), the solid oxidiser Hydrazinium Nitroformate (HNF) was identified as a very promising ingredient for a new storable composite propellant. Two distinct advantages of HNF based propellants over presently used Ammonium Perchlorate (AP) based propellants rvere the
Heijden, A.E.D.M. van der +2 more
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Experimental evaluation of HTPB/paraffin fuel blends for hybrid rocket applications [PDF]
Combustion and Flame, 2021 Hybrid rockets have many advantages over pure solid or liquid propellant rockets, but low solid fuel regression rates and correspondingly low thrust have hindered their application to operational systems. Paraffin-based fuels regress significantly faster
James C Thomas +2 more
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Thermal stability and kinetic of decomposition of nitrated HTPB
Journal of Hazardous Materials, 2009Nitrated HTPB (NHTPB) is a potential energetic binder to replace the conventional inert binder, HTPB, for the composite solid propellants and plastic bonded explosives (PBXs). The thermal stability of the NHTPB sample with 10% double bonds converted to dinitrate ester group (10% NHTPB) was evaluated by high-pressure differential scanning calorimeter ...
Qingfa, Wang +3 more
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