Results 31 to 40 of about 4,212 (194)

Construction of pendant group functional HTPB and efficient light-harvesting carrier

Polymer Testing, 2023
The synthesis, characterization and application of the polymers with functional pendant groups have always been hot topics in the polymer field. A kind of functional polybutadiene (HTPB) derivative containing anthryl and azide groups was synthesized by ...
Zichao Wang, Xuan Zhang, Zhenzhen Wu, Tong Wang, Yan Li, Liusiyuan He, Xiuzhong Zhu, Xiaodong Fan   +7 more
doaj   +1 more source

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

The Functional Differences between the GroEL Chaperonin of Escherichia coli and the HtpB Chaperonin of Legionella pneumophila Can Be Mapped to Specific Amino Acid Residues

Biomolecules, 2021
Group I chaperonins are a highly conserved family of essential proteins that self-assemble into molecular nanoboxes that mediate the folding of cytoplasmic proteins in bacteria and organelles.
Karla N. Valenzuela-Valderas, Gabriel Moreno-Hagelsieb, John R. Rohde, Rafael A. Garduño   +3 more
doaj   +1 more source

High performance ammonium nitrate propellant [PDF]

, 1979
A high performance propellant having greatly reduced hydrogen chloride emission is presented. It is comprised of: (1) a minor amount of hydrocarbon binder (10-15%), (2) at least 85% solids including ammonium nitrate as the primary oxidizer (about 40% to ...
Anderson, F. A.
core   +1 more source

The Synergistic Effect of Fe-Based MOFs and HTPB on AP Decomposition in Solid Propellants

Solids
Many factors and their mutual interaction between catalysts and AP/HTPB composite solid propellant induce the complexity in the combustion. Among them, we prepared two Fe-based MOFs as catalysts and investigated their catalytic effects and mechanism on ...
Qian Guo, Jie Wang, Yanchun Li, Ramón Artiaga   +3 more
doaj   +1 more source

Damage in Polymer Bonded Energetic Composites: Effect of Loading Rate [PDF]

, 2016
Particulate composites are widely used in the materials world. An understanding of their damage behaviour under a variety of loading conditions is necessary to inform models of their response to external stimuli.
Boddy, RL, Gould, PJ, Jardine, AP, Williamson, DM   +3 more
core   +2 more sources

Determinação da distribuição de funcionalidade de HTPB e verificação de sua influência no comportamento mecânico de poliuretano utilizado em motor-foguete Determination of functionality distribution of HTPB and evaluation of its influence in the mechanical behaviour of polyurethane used in rocket cases

Polímeros, 2006
Um método SEC com dupla detecção para determinação de distribuição de funcionalidade de resina polibutadiênica hidroxilada HTPB foi desenvolvido, verificando-se a influência desse parâmetro no comportamento mecânico de poliuretano utilizado em motor ...
Vera L. Lourenço, Aparecida M. Kawamoto, Jairo Sciamareli, Luis C. Rezende, Darci C. Pires, Marta F. K. Takahashi, Agda V. Berdugo, Sandra M. Cruz, Rita C.L. Dutra, Bluma G. Soares   +9 more
doaj   +1 more source

Structural response analysis of a solid rocket motor with HTPB propellant grain under vertical storage condition

Xibei Gongye Daxue Xuebao, 2022
Aiming at the structural response characteristics of solid rocket motor (SRM) under vertical storage conditions, the creep tests of HTPB propellant under different stress levels were carried out, and the creep constitutive model of the propellant was ...
CHEN Ke, REN Quanbin, CHENG Jiming, WANG Jianru, LEI Jiahao   +4 more
doaj   +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

Process for the leaching of AP from propellant [PDF]

, 1980
A method for the recovery of ammonium perchlorate from waste solid rocket propellant is described wherein shredded particles of the propellant are leached with an aqueous leach solution containing a low concentration of surface active agent while ...
Mcintosh, M. J., Shaw, G. C.
core   +1 more source