Results 31 to 40 of about 894 (169)

Screening Surface Modifications to Benzene to Improve Solubility in Hydroxyl‐Terminated Polybutadiene (HTPB)—A DFT Demonstration

Propellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT The objective of this paper is to demonstrate the advantage of computationally pre‐screening surface‐modifying material candidates, using density functional theory (DFT), to inform experimental synthesis and formulation efforts. This demonstration focuses on improving the solubility of benzene‐based materials in hydroxyl‐terminated ...
Samantha E. Knoth
wiley   +1 more source

AMMONIUM PERCHLORATE AND AMMONIUM PERCHLORATE- HYDROXYL TERMINATED POLYBUTADIENE SIMULATED COMBUSTION DOI 10.5028/jatm.2012.04014811

Journal of Aerospace Technology and Management, 2012
The combustion simulation of ammonium perchlorate was carried out with the software Chemkin, in two steps: the burning behavior of pure ammonium perchlorate and the one of formulated ammonium perchlorate with hydroxyl terminated polybutadiene binder.
Rene Francisco Boschi Gonçalves, Koshun Iha, Francisco Bolivar Correto Machado, José Atílio Fritz Fidel Rocco   +3 more
doaj  

Cloisite 15Aº nanoclay as an effective PTC for the epoxidation of hydroxyl terminated polybutadiene (HTPB)

Polímeros, 2014
A simple method is reported for the epoxidation of hydroxyl-terminated polybutadiene (HTPB) by using in-situ generated dimethyl dioxirane (DMD) as an oxidant and Cloisite 15Aº nanoclay as a phase-transfer catalyst (PTC).
Mir Mohammad Alavi Nikje, Maryam Gholi Nataj   +1 more
doaj   +1 more source

Highly integrated, alignment healing, and full‐recyclable multifunctional flexible devices based on dynamic covalent bonds

Smart Molecules, EarlyView.
This study addresses stability, repair, and recycling in flexible devices using polymers with identical dynamic bonds but incompatible backbones. This enables robust integration, precise self‐healing, and full recyclability. We demonstrate optoelectronic sensors that, after damage, magnetically self‐assemble and heal upon heating.
Xianfei Cao, Yong Qi, Wenbin Niu, Bingtao Tang, Shufen Zhang   +4 more
wiley   +1 more source

Influence of Hydroxyl-Terminated Polybutadiene (HTPB) on the Mechanical and Electrical Properties of Epoxy Phenol Novolac Resin [PDF]

Mechanics of Advanced Composite Structures
Epoxy phenol novolac resin is among the most widely used matrix materials in the fabrication of composite structures. Incorporating elastomeric droplets into the matrix is one approach to enhancing the properties of composite materials.
Mahmoud Heydari, Komeil Pahlavani Bidgoli   +1 more
doaj   +1 more source

Design, Production and Evaluation of 3D-Printed Mold Geometries for a Hybrid Rocket Engine

Aerospace, 2021
The feasibility of 3D-printed molds for complex solid fuel block geometries of hybrid rocket engines is investigated. Additively produced molds offer more degrees of freedom in designing an optimized but easy to manufacture mold.
Benedict Grefen, Johannes Becker, Stefan Linke, Enrico Stoll   +3 more
doaj   +1 more source

Development and Characterization of Thermo‐Responsive Shape Memory Composite of Polybenzoxazine and Modified Ultrafine Fully Vulcanized Natural Rubber (UFPNR) Filler

SPE Polymers, Volume 7, Issue 4, October 2026.
Tough Thermo‐Responsive Composite from PBA‐a and Monomer Grafted UFPNR. ABSTRACT In this study, various types and concentrations of ultrafine fully vulcanized powdered natural rubbers (UFPNR) were evaluated on how they affect the toughness of bisphenol A polybenzoxazine (PBA‐a).
Achiraya Pattulee, Ibrahim Lawan, Nuttinan Boonnao, Reza Gholami, Panyawutthi Rimdusit, Sarawut Rimdusit   +5 more
wiley   +1 more source

Study of physico-chemical properties of raw materials for solid propellant

Авіаційно-космічна техніка та технологія, 2022
In the study of the physicochemical properties of low molecular weight polybutadiene rubber with functional hydroxyl groups (Hydroxyl Terminated Poly Butadien – HTPB), which is a raw material for solid rocket fuel (SRP), an experimental batch of rubber ...
Viktor Muratov, Sergey Borisenko, Nikolay Koshevoy, Anatoliy Sanin, Maxim Kravchenko   +4 more
doaj   +1 more source

Synthesis and Characterization of an Azido Nitrofurazanyl Ether: An Energy‐Rich Heterocyclic Plasticizer With a Low Glass Transition Temperature

Propellants, Explosives, Pyrotechnics, Volume 51, Issue 8, Page 1365-1374, August 2026.
ABSTRACT We report on the synthesis and characterization of 3‐(2‐(2‐azidoethoxy)ethoxy)‐4‐nitro‐1,2,5‐oxadiazole (NFPEG2N3), which is a liquid nitrofurazanyl ether that was designed to be an energy‐rich plasticizer for glycidyl azide polymer (GAP)‐ and nitrocellulose (NC)‐based formulations.
P. Lieber, A. Omlor, U. Schaller, T. M. Klapötke   +3 more
wiley   +1 more source

Purification and Properties of Polyvinyl Nitrate and Its Compatibility With Solid Oxidizers

Propellants, Explosives, Pyrotechnics, Volume 51, Issue 8, Page 1224-1234, August 2026.
ABSTRACT Polyvinyl nitrate (PVN) is a nitrate‐ester energetic binder that can be produced directly from polyvinyl alcohol—a cheap commodity feedstock—thereby offering potential cost and supply‐chain advantages over binders based on nitrocellulose and other specialty polymers.
Stephen Spice, Monica C. Chandwani, Carole A. Morrison, Colin R. Pulham   +3 more
wiley   +1 more source