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Synthetic routes to modify hydroxyl terminated polybutadiene for various potential applications
Journal of Macromolecular Science, Part A, 2021Hydroxyl terminated polybutadiene (HTPB) is widely used in various purposes especially as a binder in the solid rocket propellant (SRP). Recent trends of modifying HTPB to be used as a binder is at high demands but structural modification without ...
M. Ganivada +3 more
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, 2021
The heat conductivity affects the burning rate of propellant much, which would influence the properties of power propellant. In this work, hydroxyl-terminated polybutadiene (HTPB) was employed as a model propellant matrix, and series of composites were ...
Zhengzhong Zhang +7 more
semanticscholar +1 more source
The heat conductivity affects the burning rate of propellant much, which would influence the properties of power propellant. In this work, hydroxyl-terminated polybutadiene (HTPB) was employed as a model propellant matrix, and series of composites were ...
Zhengzhong Zhang +7 more
semanticscholar +1 more source
Polyurethane based on hydroxyl‐terminated polybutadienes
British Polymer Journal, 1971AbstractButadiene has been found to homopolymerise and copolymerise with other reactive vinyl monomers to yield unique liquid polymers which are terminated with reactive allylic hydroxyl groups. Through the use of an isocyanate cure reaction they offer a route to liquid castable general purpose elastomers, capable of reinforcement with various fillers ...
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Functionality distribution and crosslink density of hydroxyl‐terminated polybutadiene
Polymer International, 1993Abstract A novel approach is proposed for estimating the average molecular weight between crosslinks (M̄ c ) from the functionality distribution of hydroxyl‐terminated polybutadiene ( HTPB ). The functionality distribution of four free‐
K. N. Ninan +3 more
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Propellants, explosives, pyrotechnics
Considering the high toxicity of toluene diisocyanate (TDI) and the low reactivity of isophorone diisocyanate (IPDI), a low‐toxicity curing agent, dimer acid diisocyanate (DDI), was used to cross‐link HTPB elastomers and propellants.
Kai Xin +4 more
semanticscholar +1 more source
Considering the high toxicity of toluene diisocyanate (TDI) and the low reactivity of isophorone diisocyanate (IPDI), a low‐toxicity curing agent, dimer acid diisocyanate (DDI), was used to cross‐link HTPB elastomers and propellants.
Kai Xin +4 more
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Urethane Elastomers Based on Hydroxyl Terminated Polybutadienes
Journal of Elastoplastics, 1971This article describes the preparation and properties of urethane elastomers based on hydroxyl-terminated polybutadienes. The liquid nature of these polybutadiene systems allows easy reaction with isocyanates even at ambient temperatures. Properties of elastomers produced can be easily improved by either chemical modification of the polymer backbone ...
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Polymer, 1994
Abstract Thermal ageing of hydroxyl-terminated polybutadiene propellant binders was carried out at various temperatures between 50 and 100°C. The changes caused by this treatment in properties such as melt viscosity, functional end-groups, molecular weight, tensile strength, elastic modulus and ultimate elongation were examined.
A. Akbaş, S. Aksoy, N. Hasırcı
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Abstract Thermal ageing of hydroxyl-terminated polybutadiene propellant binders was carried out at various temperatures between 50 and 100°C. The changes caused by this treatment in properties such as melt viscosity, functional end-groups, molecular weight, tensile strength, elastic modulus and ultimate elongation were examined.
A. Akbaş, S. Aksoy, N. Hasırcı
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Catalysis of Blocked Isocyanate-Hydroxyl-Terminated Polybutadiene Cure Reaction
Journal of Macromolecular Science, Part A, 1996The catalytic activity of three tertiary amines and three organotin compounds in the cure reaction of blocked isocyanate with hydroxyl-terminated polybutadiene was investigated. It was found that the steric factor determines the catalytic activity of the compound. The tin compounds showed higher catalytic activities than the amine compounds.
H. Kothandaraman +2 more
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Viscoelastic behavior of hydroxyl terminated polybutadiene containing glycerin
Journal of Applied Polymer Science, 2011AbstractHydroxyl terminated polybutadiene (HTPB) is widely used as a propellant binder. A plasticizer is usually added to improve the processing properties, the mechanical properties, and the burning characteristics of the propellant. Glycerin was found to be an effective additive to improve these properties.
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Preparation of Hydroxyl-Terminated Polybutadiene with High Cis-1,4 Content
Industrial & Engineering Chemistry Research, 2014Hydroxyl-terminated polybutadiene (HTPB) with high cis-1,4 content (>95.0%) has been prepared via a two-step method by taking commercial butadiene rubber (BR9000) as a starting material, including the one-pot synthesis of aldehyde-group-terminated polybutadiene (ATPB) in high efficiency and the subsequent reduction reaction.
Qinzhuo Zhou, Suyun Jie, Bo-Geng Li
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