Results 151 to 160 of about 467 (183)
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Journal of Propulsion and Power, 2015
A1 = mole fractions of hydroxyl groups on monofunctional moieties A2 = mole fractions of hydroxyl groups on difunctional moieties A3 = mole fractions of hydroxyl groups on trifunctional moieties a = empirical constant b = empirical constant C1 = intercept C2 = slope d = relative contents of difunctional moieties Eb = elongation at break ENCO = number ...
V Sekkar, Thakur Sudesh Kumar Raunija
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A1 = mole fractions of hydroxyl groups on monofunctional moieties A2 = mole fractions of hydroxyl groups on difunctional moieties A3 = mole fractions of hydroxyl groups on trifunctional moieties a = empirical constant b = empirical constant C1 = intercept C2 = slope d = relative contents of difunctional moieties Eb = elongation at break ENCO = number ...
V Sekkar, Thakur Sudesh Kumar Raunija
exaly +2 more sources
Propellants, Explosives, Pyrotechnics, 2022
AbstractThis 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 ...
Javier Carlos Quagliano Amado +3 more
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AbstractThis 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 ...
Javier Carlos Quagliano Amado +3 more
openaire +1 more source
Thermochimica Acta, 2018
Abstract The isothermal curing kinetics of hydroxyl-terminated polybutadiene (HTPB) binder system containing dioctyl sebacate (DOS) and polyaryl polyisocyanate (PAPI) was investigated by microcalorimetry. The curing was completed after 5.3 × 105, 4.2 × 105, 3.6 × 105, and 3.2 × 105 s at 303.15, 313.15, 323.15, and 333.15 K, respectively.
Yiyi Xiao +6 more
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Abstract The isothermal curing kinetics of hydroxyl-terminated polybutadiene (HTPB) binder system containing dioctyl sebacate (DOS) and polyaryl polyisocyanate (PAPI) was investigated by microcalorimetry. The curing was completed after 5.3 × 105, 4.2 × 105, 3.6 × 105, and 3.2 × 105 s at 303.15, 313.15, 323.15, and 333.15 K, respectively.
Yiyi Xiao +6 more
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Journal of Applied Polymer Science, 2002
AbstractSolid composite propellants contain 80–90% of a crystalline oxidizer like ammonium perchlorate and powdery metallic fuel like aluminum with 10 to 15% organic binders like HTPB or CTPB, to bind the solids together and maintain the shape under severe stress and strain environment.
B. M. Bandgar +3 more
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AbstractSolid composite propellants contain 80–90% of a crystalline oxidizer like ammonium perchlorate and powdery metallic fuel like aluminum with 10 to 15% organic binders like HTPB or CTPB, to bind the solids together and maintain the shape under severe stress and strain environment.
B. M. Bandgar +3 more
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Journal of Applied Polymer Science, 2011
AbstractWe synthesized a ferrocene‐based burning rate catalyst, 2‐(ferrocenylpropyl) dimethylsilane (FPDS). FPDS‐grafted hydroxyl‐terminated polybutadiene (FPDS‐g‐HTPB) was synthesized using hydrosilylation with a Pt catalyst. The structures of FPDS and FPDS‐g‐HTPB were investigated by Fourier transform infrared spectroscopy and nuclear magnetic ...
Bong‐Sang Cho, Si‐Tae Noh
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AbstractWe synthesized a ferrocene‐based burning rate catalyst, 2‐(ferrocenylpropyl) dimethylsilane (FPDS). FPDS‐grafted hydroxyl‐terminated polybutadiene (FPDS‐g‐HTPB) was synthesized using hydrosilylation with a Pt catalyst. The structures of FPDS and FPDS‐g‐HTPB were investigated by Fourier transform infrared spectroscopy and nuclear magnetic ...
Bong‐Sang Cho, Si‐Tae Noh
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Propellants, Explosives, Pyrotechnics, 1985
AbstractA simple method to evaluate the adhesive force between solid oxidizer and polymeric fuel‐binder is presented. As an illustration, hydroxyl‐terminated polybutadiene (HTPB) sticks including several different bonding agents are bonded on ammonium perchlorate (AP) single crystals, and stress‐strain history until rupture occurs is obtained by ...
K. Hori, A. Iwama, T. Fukuda
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AbstractA simple method to evaluate the adhesive force between solid oxidizer and polymeric fuel‐binder is presented. As an illustration, hydroxyl‐terminated polybutadiene (HTPB) sticks including several different bonding agents are bonded on ammonium perchlorate (AP) single crystals, and stress‐strain history until rupture occurs is obtained by ...
K. Hori, A. Iwama, T. Fukuda
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Journal of Macromolecular Science, Part A, 2017
ABSTRACTA possibility of extending the pot life of the HTPB-TDI based propellant binder system without adverse modification of mechanical properties is explored in the present study. It is proposed that by tailoring functionality distribution of the base HTPB polymer and changing the binder composition concurrently, the pot life of the binder system ...
V. Sekkar +3 more
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ABSTRACTA possibility of extending the pot life of the HTPB-TDI based propellant binder system without adverse modification of mechanical properties is explored in the present study. It is proposed that by tailoring functionality distribution of the base HTPB polymer and changing the binder composition concurrently, the pot life of the binder system ...
V. Sekkar +3 more
openaire +1 more source