Results 21 to 30 of about 183,821 (192)

Ultrasonically Accelerated Nitration of Hydroxyl-Terminated Polybutadiene: Process Efficiency and Product Characterization

Eng
Hydroxyl-terminated polybutadiene (HTPB) is widely studied and the most used prepolymer for the binder system of composite solid propellants. A suitable functionalization of HTPB with energetic groups greatly improves the performance of the propellant ...
Ventsislav Bakov, Spaska Yaneva, Nadezhda Rangelova, Milko Berner, Damyan Ganchev, Nikolai Georgiev   +5 more
doaj   +2 more sources

Diffusion of plasticizer in a solid propellant based on hydroxyl-terminated polybutadiene

Polímeros, 2010
The aim of this work was to determine the dioctyl azelate (DOZ) plasticizer diffusion coefficient (D) for samples containing the interfaces of rubber, liner and solid composite propellant based on hydroxyl-terminated polybutadiene (HTPB).
Juliano Libardi, Sergio P. Ravagnani, Ana M. F. Morais, Antonio R. Cardoso   +3 more
doaj   +1 more source

Novel Glycidyl Carbamate Functional Epoxy Resin Using Hydroxyl-Terminated Polybutadiene. [PDF]

Polymers (Basel)
Herein, a novel glycidyl carbamate functional epoxy resin (GCE) is synthesized by the additional reaction of the isocyanate group of tolylene diisocyanate (TDI) with the hydroxyl group of hydroxyl-terminated polybutadiene (HTPB) and glycidol.
Kim HC, Moon SJ, Kwon YR, Moon SK, Kim DH, Kim DH.   +5 more
europepmc   +2 more sources

Hexogen Coating Kinetics with Polyurethane-Based Hydroxyl-Terminated Polybutadiene (HTPB) Using Infrared Spectroscopy. [PDF]

Polymers (Basel), 2022
The kinetics of hexogen coating with polyurethane-based hydroxyl-terminated polybutadiene (HTPB) using infrared spectrometry was investigated. The kinetics model was evaluated through reaction steps: (1) hydroxyl and isocyanate to produce urethane, (2 ...
Wibowo HB, Sitompul HRD, Budi RS, Hartaya K, Abdillah LH, Ardianingsih R, Wibowo RSM.   +6 more
europepmc   +2 more sources

Experimental and simulation research on microscopic damage of HTPB propellant under tension-shear loading

AIP Advances, 2022
In order to study the influence of loading conditions on propellant mesoscopic failure morphology, scanning electron microscopy was carried out to observe the morphology of the failure section of a hydroxyl-terminated polybutadiene propellant under ...
Jia-yuan Cui, Hong-fu Qiang, Jia-xiang Wang   +2 more
doaj   +1 more source

Effect of hyperbranched polyesters on HTPB polyurethane curing kinetic [PDF]

Materials Research, 2013
Effects of hyperbranched polyesters on kinetics of the reaction between hydroxyl-terminated polybutadiene (HTPB) and isophorone diisocyanate (IPDI) were investigated.
Xuejing Song, Luo Yunjun
doaj   +1 more source

Self-Healing, Recyclable Syndiotactic 1,2-Polybutadiene-Based Thermadapt Shape Memory Polymers with Cold-Programmed Shape Memory Effect

, 2023
Shape memory polymers (SMPs), as a type of smart material, play a significant role in practical applications. Unlike the hot programming of SMPs, the cold programming of SMPs does not require preheating.
Tengfei Lin (1706983), Chunlin Zhao (1960900), Cong Lin (1510291), Jinyun Wang (1800799), Min Gao (87060), Zhou Li (140418), Xiao Wu (158273), Biao Xia (2864588)   +7 more
core   +4 more sources

Effect of hydroxyl terminated polybutadiene number-averaged molecular weight on chemorheological behavior of polyurethane networking [PDF]

Polyolefins Journal, 2023
The time available for proper casting of the polyurethane (PU) system after isocyanate addition (called pot life) affects the macrodiol microstructure. In this research, the effect of molecular weight ( Mn ) of hydroxyl terminated polybutadiene (HTPB) as
Abolfazl Deylami, Abbas Kebritchi
doaj   +1 more source

Fully Atomistic Molecular Dynamics Simulations of Hydroxyl-Terminated Polybutadiene with Insights into Hydroxyl Aggregation

, 2020
A fully atomistic model designed to reproduce the molecular weight and average functionality typical of commercial hydroxyl-terminated polybutadiene (HTPB) formulations is presented.
Garrett M. Tow (8617587), Edward J. Maginn (1268100)   +1 more
core   +2 more sources

Kinetic study of HTPB (Hydroxyl Terminated Polybutadiene) Synthesis Using Infrared Spectroscopy

Indonesian Journal of Chemistry, 2020
A kinetic study of HTPB synthesis by radical polymerization of butadiene with hydrogen peroxide initiator was conducted using infrared spectroscopy. HTPB conversion was determined based on the conjunction termination rate constant, and all polymerization
Heri Budi Wibowo, Widhi Cahya Dharmawan, Ratih Sanggra Murti Wibowo, Adi Yulianto   +3 more
doaj   +1 more source