Results 71 to 80 of about 467 (183)

REKOMENDASI PENGGUNAAN HYDROXYL TERMINATED POLYBUTADIENE MANDIRI SEBAGAI BINDER PROPELAN BERDASAR HASIL PENGUJIAN BERAT MOLEKUL HTPB IMPOR (RECOMENDATION OF USING THE AUTONOMOUS HYDROXYL TERMINATED POLYBUTADIENE AS BINDER FOR PROPELLANT BASED ON THE IMPOR HTPB MOLECULAR WEIGHT TESTING VALUES)

, 2016
Telah diuji dan dianalisis berat molekul HTPB, hasilnya adalah, spesifikasi dua, spesifikasi tiga, spesifikasi empat berturut-turut adalah 9998 gr/mol (label 2300-2800 gr/mol), 9047 gr/mol (label 2800-3500 gr/mol), 12823 gr/mol (label 3500-4500 gr/mol ...
Kendra Hartaya
core  

Isocyanate-free Carboxyl-terminated Polybutadiene and Epoxidised Hydroxyl-terminated Polybutadiene Cross-linking System as a Binder in Solid Heterogeneous Propellants

Central European Journal of Energetic Materials, 2023
Michał Chmielarek, Natalia Stopa
openaire   +1 more source

HTPB propellant aging mechanisms and safety characteristics: microscopic structural changes, thermal stability, and self-accelerating decomposition temperature

Case Studies in Thermal Engineering
As hydroxyl-terminated polybutadiene (HTPB) propellant surpasses its intended service life, its performance degrades, necessitating careful disposal to avert potential safety hazards.
Xi-chen Liu, Yi-min Luo, Wen-jiang Li, Fei-yang Xu, Xing-liang Wu, Qiang Li, Da-bin Liu   +6 more
doaj   +1 more source

Synthesis and Characterization of PolyNIMMO-HTPB-polyNIMMO Triblock Copolymer as a Potential Energetic Binder

, 2018
Triblock copolymer polyNIMMO-HTPB-polyNIMMO was synthesized by cationic ring opening polymerization of NIMMO (3-nitratomethyl-3-methyloxetane) in the presence of hydroxyl-terminated polybutadiene catalyzed by BF3·OEt2. The polymer was characterized by FT-
Lu, X., Mo, H., Wang, X., Shu, Y., Xu, M.   +4 more
core   +1 more source

Manufacturing optimization of HTPB composite propellants: rheological flow and viscoelastic behavior

Polymer Testing
The mixing stage is the most critical phase in the production of high-energy composite rocket propellants, where balancing high solids loading with processability remains a major challenge.
D. Chimeno, R. López, A. Salazar, J. Rodríguez   +3 more
doaj   +1 more source

Three-dimensional microstructural characterization of HMX-based propellant via synchrotron X-ray tomography

Energetic Materials Frontiers
Although octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) plays a critical role in high-performance weapon systems, its microstructural behavior within the grains of solid propellants and PBXs has not been fully explored. This challenge arises from
Jun Wang, Chen-xi Ma, Pei-pei Wang, Jun-feng Wang   +3 more
doaj   +1 more source

TG studies of a composite solid rocket propellant based on HTPB-binder

, 2004
Thermal decomposition kinetics of solid rocket propellants based on hydroxyl-terminated polybutadiene-HTPB binder was studied by applying the Arrhenius and Flynn-Wall-Ozawa's methods. The thermal decomposition data of the propellant samples were analyzed
Ionashiro, Massao [UNESP], Iha, K., Lima, JES, Ionashiro, Massao, Frutuoso, A. G., Matos, JR, Rocco, JAFF, Suarez-Iha, MEV   +7 more
core   +1 more source

Effects of Gamma Irradiation on Solid Propellant Conventional and UV-Cured Binders

Aerospace
Ionizing radiations are responsible for bond scission, radical formation, and oxidative degradation of polymer matrices. This study focuses on the effects of gamma irradiation on solid propellant binders, targeting a comprehensive chemical and mechanical
Stefania Carlotti, Rocco Carcione, Beatrice D’Orsi, Tommaso Lusetti, Alessandro Finazzi, Jessica Scifo, Ilaria Di Sarcina, Matteo Ferrari, Alessia Cemmi, Filippo Maggi   +9 more
doaj   +1 more source

Advances in aluminum powder usage as an energetic material and applications for rocket propellant [PDF]

, 2012
Energetic materials have been widely used for military purposes. Continuous research programs are performing in the world for the development of the new materials with higher and improved performance comparing with the available ones in order to fulfill ...
Sadeghipour, S., M. A. Wahid, Ghaderian, Javad, J. Ghaderian, A. Wahid, Mazlan, S. Sadeghipour, Ghaderian, J., Sadeghipour, Sakineh, Abdul Wahid, Mazlan   +8 more
core   +1 more source

Synthesis of energetic polyethers from halogenated precursors

, 2006
In the solid rocket propellant formulations an important component is the polymeric binder. Actually, the most used binder is hydroxyl-terminated polybutadiene. However, the research is oriented toward the use of energetic polymers which, in addition to
Giovanni Polacco, R. MASSIMI, POLACCO, GIOVANNI, U. BARBIERI, Ugo Barbieri, Roberto Massimi   +5 more
core   +1 more source