Results 171 to 180 of about 1,311 (196)

On the adhesion between Hydroxyl‐Terminated Polybutadiene Fuel‐Binder and Ammonium Perchlorate. Performance of bonding agents

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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Hydroxyl-Terminated Polybutadiene Telechelic Polymer (HTPB): Binder for Solid Rocket Propellants

Rubber Chemistry and Technology, 1995
Abstract 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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Pot life extension of hydroxyl terminated polybutadiene based solid propellant binder system by tailoring the binder polymer microstructure

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, Ancy Smitha Alex, Vijendra Kumar, G. G. Bandyopadhyay   +3 more
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Issues Related with Pot Life Extension for Hydroxyl‐Terminated Polybutadiene‐Based Solid Propellant Binder System

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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Molecular investigations on the adsorption and flow behavior of hydroxyl-terminated polybutadiene (HTPB) binders on Cu surfaces: The effects of surface nanostructure and perfluorosilylation

Progress in Organic Coatings, 2020
Abstract The flow behavior of highly viscous casting explosives in micro-channels and special shaped moulds are critical factors affecting the formations of solid propellants and explosives. In the present work, the spreading property and flow behavior of hydroxyl-terminated polybutadiene (HTPB) binders, a major component of casting explosives, on Cu
Ting Zheng, Chunya Wu, Qing Zhu, Shangbin Li   +3 more
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Investigations of effect of hydroxyl-terminated polybutadiene-based polyurethane binders containing various curatives on thermal decomposition behaviour and kinetics of energetic composites

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, Arjun Singh, Mahesh Kumar, Pramod Kumar Soni, Vasundhara Singh   +4 more
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Synthesis and characterization of iron carbonyl‐modified hydroxyl‐terminated polybutadiene: A catalyst‐bound propellant binder for burn‐rate augmentation

Journal of Applied Polymer Science, 2003
AbstractIron was coordinately linked to the hydroxyl‐terminated polybutadiene (HTPB) backbone using iron carbonyl via a ligand displacement reaction. The modified HTPB thus obtained was reddish brown in color and was characterized by GPC, FTIR, NMR, thermal, and propellant studies. No significant changes in the rheology, molecular weight, and molecular
K. Subramanian, K. S. Sastri
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Molecular investigation of adsorption behaviors of hydroxyl-terminated polybutadiene (HTPB) binders onto copper surface: The effects of aluminum nanoparticles

Applied Surface Science, 2019
Abstract The adherent behaviors of hydroxyl-terminated polybutadiene (HTPB), a typical high viscosity liquid widely used as a binder in rocket motor propellants, onto the copper (Cu) surfaces with/without the interference of Al nanoparticles were investigated by classical molecular dynamics (MD) simulations.
Chunya Wu, Qing Zhu, Ting Zheng, Chuangqiang Guo, Tingzhang Wang, Bo Hou, Xiaodong He, Guan Luo, Shangbin Li, Mingjun Chen   +9 more
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Synergistically catalysed pyrolysis of hydroxyl terminated polybutadiene binder in composite propellants and burn rate enhancement by free-standing CuO nanoparticles

Combustion and Flame, 2017
Abstract Free-standing nanoparticles are a ubiquitous requirement for high-efficiency catalytic applications. Here, we report the catalytic pyrolysis of hydroxyl terminated polybutadiene (HTPB) binder in composite propellant by free-standing CuO nanoparticles synthesized through a novel aqueous thermolysis synthetic route.
Kranthi Chatragadda, Anuj A Vargeese
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Burning‐rate enhancement of a high‐energy rocket composite solid propellant based on ferrocene‐grafted hydroxyl‐terminated polybutadiene binder

Journal of Applied Polymer Science, 2010
AbstractFour different samples of ferrocene‐grafted hydroxyl‐terminated polybutadiene (Fc‐HTPB), containing 0.20, 0.52, 0.90, and 1.50 wt % iron, were synthesized by the Friedel–Crafts alkylation of ferrocene with hydroxyl‐terminated polybutadiene (HTPB) in the presence of AlCl3 as a (Lewis acid) catalyst.
D. Saravanakumar, N. Sengottuvelan, V. Narayanan, M. Kandaswamy, T. L. Varghese   +4 more
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