Results 71 to 80 of about 3,671 (218)

Síntese de poliuretanos modificados por óleo de mamona empregados em materiais energéticos

Química Nova, 2013
The aim of this work was to synthesize a polyurethane polymer matrix using castor oil as a polymer chain modifier, whose characteristics can be adjusted for use as a binder in the manufacture of energetic materials such as propellant and pyrotechnics for
Roberta Jachura Rocha, José Eduardo Salgueiro Lima, Susane Ribeiro Gomes, Koshun Iha, José Atílio Fritz Fidel Rocco   +4 more
doaj   +1 more source

Degradation mechanism, hydrocarbon polymers Final technical report [PDF]

Degradation of hydrocarbon polymers by exposure to 275 F for 400 hours in presence and in absence of ammonium ...
Hamermesh, C. L.
core   +1 more source

Thermodynamic Scaling of the Viscosity of Van Der Waals, H-Bonded, and Ionic Liquids

, 2006
Viscosities and their temperature, T, and volume, V, dependences are reported for 7 molecular liquids and polymers. In combination with literature viscosity data for 5 other liquids, we show that the superpositioning of relaxation times for various glass-
Barton A. F. M., C. M. Roland, Casalini R., Fontana E. H., Porter D., R. Casalini, S. Bair, Zoller P.   +7 more
core   +1 more source

Synthesis and Characterization of Methacrylamide‐Based Block Random Copolymers via Amine Functionalization of Polystyrene‐Block‐Poly(Pentafluorophenyl Methacrylate) Toward Enhanced Amenability to Manufacturing Criteria in Nanolithography

Macromolecular Chemistry and Physics, Volume 226, Issue 23, December 5, 2025.
Polystyrene‐block‐poly(pentafluorophenyl methacrylate) (PS‐b‐PPFMA) is functionalized with primary amines to develop A‐block‐(B‐random‐C) block copolymers (BCPs). These BCPs exhibit high thermal stability and circumvent sources of undesired side reactions upon heating on account of its methacrylamide functionality.
Christopher J. Eom, Kyunghyeon Lee, Gordon S. W. Craig, Paul F. Nealey   +3 more
wiley   +1 more source

Preliminary research of composite rocket propellants with hexogen and titanium oxide powder [PDF]

Scientific Technical Review, 2018
Composite solid propellants based on ammonium perchlorate/hydroxyl-terminated polybutadiene/isophorone dyisocyanate including two levels of hexogen (RDX) are presented in this paper. The mass of RDX increased in relation to oxidant, with constant bimodal
Rodić Vesna, Bogosavljević Marica, Milojković Aleksandar, Mijatov Slavko   +3 more
doaj  

Estudo da decomposição térmica de propelente sólido compósito de baixa emissão de fumaça Study of thermal decomposition of a smokelles propellant

Química Nova, 2008
The thermal decomposition of hydroxyl-terminated polybutadiene (HTPB)/ammonium nitrate (AN) based propellants, so called smokeless formulations, and raw materials were investigated by differential scanning calorimetry (DSC) and thermogravimetry (TG). The
Jony Andrade, Antonio Gonçalves Frutuoso, Koshun Iha, José Atílio Fritz Fidel Rocco, Eduardo M. Bezerra, Jivaldo do Rosário Matos, Maria Encarnación Vázquez Suárez-Iha   +6 more
doaj   +1 more source

Review of solid propellants for space exploration [PDF]

Solid propellants for space vehicles and spacecraft fuel ...
Hendel, F. J.
core   +1 more source

Elucidation of the dynamics for hot-spot initiation at nonuniform interfaces of highly shocked materials [PDF]

, 2011
The fundamental processes in shock-induced instabilities of materials remain obscure, particularly for detonation of energetic materials. We simulated these processes at the atomic scale on a realistic model of a polymer-bonded explosive (3,695,375 atoms/
An, Qi, Blanco, Mario, Goddard, William A., III, Jaramillo-Botero, Andres, Luo, Sheng-Nian, Zybin, Sergey V.   +5 more
core   +1 more source

Coating of High Melting Explosive Particles by Nitrotriazolone to Formulate Composite Nanoparticles by Spray Flash Evaporation

Propellants, Explosives, Pyrotechnics, Volume 50, Issue 11-12, Page 32-39, December 2025.
ABSTRACT The balance between performance and safety of high explosives is at the heart of the current studies, and new ways of combining safety and performance have hence been elaborated. This study focuses on a mixture of 3‐nitro‐1,2,4‐triazol‐5‐one (NTO) and octogen (high melting explosive [HMX]).
Maxime Blanchon, Anna K. Ott, Bastien Lallemand, Antoine Osmont, Denis Spitzer, Marc Comet   +5 more
wiley   +1 more source

Prediction of Propellant Electrostatic Sensitivity Based on Small-Sample Machine Learning Models

Aerospace
Hydroxyl-terminated-polybutadiene (HTPB)-based composite solid propellants are extensively used in aerospace and defense applications due to their high energy density, thermal stability, and processability.
Fei Wang, Kai Cui, Jinxiang Liu, Wenhai He, Qiuyu Zhang, Weihai Zhang, Tianshuai Wang   +6 more
doaj   +1 more source