Results 161 to 170 of about 183,821 (190)

Urethane Elastomers Based on Hydroxyl Terminated Polybutadienes

Journal of Elastoplastics, 1971
This 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 of
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Viscoelastic behavior of hydroxyl terminated polybutadiene containing glycerin

Journal of Applied Polymer Science, 2011
AbstractHydroxyl 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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Catalysis of Blocked Isocyanate-Hydroxyl-Terminated Polybutadiene Cure Reaction

Journal of Macromolecular Science, Part A, 1996
The 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, A. Sultan Nasar, K. R. Suresh   +2 more
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Thermokinetic studies of polyurethanes based on hydroxyl-terminated polybutadiene prepolymer

Journal of Thermal Analysis and Calorimetry, 2017
Three different polyurethane compositions were prepared based on hydroxyl-terminated polybutadiene (HTPB) prepolymer with different curative types. The employed curatives were hexamethylene diisocyanate (HMDI), isophorone diisocyanate (IPDI) and dicyclohexylmethane-4,4'-diisocyanate.
Sameh A. El-Basuony, Mohamed A. Sadek, Tamer Z. Wafy, Hosam E. Mostafa   +3 more
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Synthesis and the characterization of hydroxyl terminated polybutadiene

2020
ABSTRACT SYNTHESIS AND THE CHARACTERIZATION OF HYDROXYL TERMINATED POLYBUTADHCNE Pehlivanoğlu, R. Koray M.S, Department of Chemistry Supervisor. Prof. Dr. Savaş KÜÇÜKVAYUZ Co-Supervisor: Prof. Dr. Saim ÖZKAR October 1997, 55 pages Hydroxyl terminated polybutadiene (HTPB) is used as a binder in solid rocket propellant.
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Hydroxyl-terminated polybutadiene

Polymer Bulletin, 1997
W. D. Vilar, S. M. C. Menezes, P. R. Seidl   +2 more
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The effect of pressure on the mechanical properties of hydroxyl-terminated polybutadiene-based propellants

Journal of Molecular Modeling
In order to estimate the mechanical behavior of the propellant under working pressures, the effect of pressure on the mechanical properties of hydroxyl-terminated polybutadiene (HTPB) propellants was studied by analyzing the uniaxial tensile strength and maximum strain master curves under the test conditions of - 20 ~ 70 °C, 0.5 mm/min ~ 500 mm/min ...
Tao, Guo, Zhong-E, Chen, Tieshan, He, Cheng, Li, Shejuan, Xie, Ning, Wang   +5 more
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Short timescale high temperature pyrolysis products of hydroxyl-terminated polybutadiene

Fuel, 2023
Evguenii Kozliak, Mark Sulkes, Nataliia Haiduk   +2 more
exaly  

Short Timescale High Temperature Pyrolysis Products of Hydroxyl-Terminated Polybutadiene

SSRN Electronic Journal, 2022
Valeriia Karpovych, Evguenii Kozliak, Nataliia Haiduk, Mark Sulkes   +3 more
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Characterization of uncured and cured hydroxyl terminated polybutadiene prepolymer

2020
ABSTRACT Hydroxyl terminated polybutadienes < HTPB) are being used for the production of composite solid propel lants. Liquid hydroxyl terminated polybutadiene can be crossl inked with chain extension by the reaction of the terminal hydroxyl groups with the diisocyanate groups of isophorone diisocyanate < IPDI) and yield polyurethanes.
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