Results 161 to 170 of about 1,271 (200)
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Ferrocene grafted hydroxyl terminated polybutadiene: A binder for propellant with improved burn rate
Polymer, 2019Abstract In this work, iron containing hydroxyl terminated polybutadiene (Fe-HTPB) based binder cum burn rate catalyst has been developed without altering the crucial physical properties of HTPB. Ferrocene, the source of Fe in the Fe-HTPB, has been grafted at the terminal carbons of HTPB to ensure no alternation in microstructure of HTPB which in ...
Billa Narasimha Rao +3 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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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
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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 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
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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
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Propellants, Explosives, Pyrotechnics, 2014
AbstractExtension of the pot life for hydroxyl‐terminated polybutadiene (HTPB) based propellant binder systems was attempted through employing a bicurative system comprising of toluene‐di‐isocyanate (TDI) and isophorone‐di‐isocyanate (IPDI). Pot life characteristics were studied through evaluating curing kinetics for the HTPB‐bicurative binder ...
V. Sekkar, Thakur Sudesh Kumar Raunija
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AbstractExtension of the pot life for hydroxyl‐terminated polybutadiene (HTPB) based propellant binder systems was attempted through employing a bicurative system comprising of toluene‐di‐isocyanate (TDI) and isophorone‐di‐isocyanate (IPDI). Pot life characteristics were studied through evaluating curing kinetics for the HTPB‐bicurative binder ...
V. Sekkar, Thakur Sudesh Kumar Raunija
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Hydroxyl-Terminated Polybutadiene Telechelic Polymer (HTPB): Binder for Solid Rocket Propellants
Rubber Chemistry and Technology, 1995Abstract This paper presents a review of hydroxyl-terminated polybutadiene telechelic polymer (HTPB) with emphasis on its preparation, properties, end group modifications, hydrogenation, role as polyurethane precursors and binders for solid rocket propellants.
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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 Thermal Analysis and Calorimetry, 2020
An energetic composite of an octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine with a polymer matrix is generally developed to reduce sensitivity, improve mechanical strength and furnish engineering shape. A hydroxyl-terminated polybutadiene (HTPB) and various curatives, namely methylene diphenyl diisocyanate (MDI), isophorone diisocyanate (IPDI ...
Rajesh Kumar +4 more
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An energetic composite of an octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine with a polymer matrix is generally developed to reduce sensitivity, improve mechanical strength and furnish engineering shape. A hydroxyl-terminated polybutadiene (HTPB) and various curatives, namely methylene diphenyl diisocyanate (MDI), isophorone diisocyanate (IPDI ...
Rajesh Kumar +4 more
openaire +1 more source