Results 51 to 60 of about 894 (169)

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   +1 more source

Toward Model Amphiphilic Polymer Co‐Networks: Linking Architecture to Structure and Properties

Macromolecular Chemistry and Physics, Volume 227, Issue 7, 14 April 2026.
This review provides a comprehensive overview on model amphiphilic polymer co‐networks, demonstrating how precise control over network architecture enables systematic investigation of their structure and properties. By linking molecular design to macroscopic behavior, it highlights fundamental structure–property relationships and shows how these ...
Sebastian Seitel, David Beyer, Frank Böhme, Carolin Bunk, Yasmina El‐Faramawi, Jonas J. Grün, Kevin Hagmann, Christian Holm, Michael Lang, Kay Saalwächter, Felix H. Schacher, Reinhard Scholz, Regine von Klitzing, Marie Weinhart, Sebastian Seiffert   +14 more
wiley   +1 more source

Cobalt‐Based Metal Hybrid Encapsulated Micro‐Aluminum for Tailoring Combustion in Composite Solid Propellants

Rare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT To address the issues of aluminum (Al) powder agglomeration during combustion and low oxidizer decomposition efficiency in composite solid propellants, this study utilized in situ self‐assembly technology to prepare cobalt‐based hybrid‐coated modified Al powder (Al@CZ).
Chong Chen, Chen Peng, Lin Fu, Fan Cui, Wenqi Zhu, Yichen Li, Lei Xiao, Jun Di, Guigao Liu, Wei Jiang, Hongfeng Ji, Gazi Hao   +11 more
wiley   +1 more source

Acúmulo de cargas elétricas em propelente sólido compósito com matriz de polibutadieno líquido hidroxilado

Química Nova, 2014
Composite solid propellants prepared with HTPB prepolymer - Hydroxyl Terminated Polybutadiene, AP - Ammonium Perchlorate as oxidizer and aluminum particles as an additive metal, have characteristics of high electrical resistivity.
Silvio Manea, Gabriela Knippelberg B. Manea, Koshun Iha, José A. F. F. Rocco   +3 more
doaj   +1 more source

Recent advances of non‐invasive sensors for smart wearable respiratory monitoring

VIEW, Volume 7, Issue 2, April 2026.
Respiration contains rich physiological and pathological information, making it one of the most fundamental and continuous vital signs. Respiration monitoring is a non‐invasive and simple, but incredibly powerful, tool for assessing health, managing disease, and tracking fitness.
Jianhui Chen, Baoxiang Yang, Chang Peng, Bao Yang, Licheng Zhou, Zhenyu Jiang, Zejia Liu, Yiping Liu, Liqun Tang   +8 more
wiley   +1 more source

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

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

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

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  

Calculation for Primary Combustion Characteristics of Boron-Based Fuel-Rich Propellant Based on BP Neural Network

Journal of Combustion, 2012
A practical scheme for selecting characterization parameters of boron-based fuel-rich propellant formulation was put forward; a calculation model for primary combustion characteristics of boron-based fuel-rich propellant based on backpropagation neural ...
Wu Wan'e, Zhu Zuoming
doaj   +1 more source