Results 31 to 40 of about 11,171 (240)

Simulation Analysis of the Safety of High-Energy Hydroxyl-Terminated Polybutadiene (HTPB) Engine under the Impact of Fragments

Crystals, 2023
The safety of solid rocket engine use seriously affects the survivability and combat effectiveness of weaponries. To study the engine safety against fragment in complex battlefield environments, the fragment impact safety simulation study of a high ...
Zheng Liu, J. Nie, Wenqi Fan, Jun Tao, Fangxin Jiang, Tiejian Guo, Kun Gao   +6 more
semanticscholar   +1 more source

Study on the interfacial interaction between ammonium perchlorate and hydroxyl-terminated polybutadiene in solid propellants by molecular dynamics simulation

E-Polymers, 2022
The interfacial interaction between the main oxidant filler ammonium perchlorate (AP) and hydroxyl-terminated polybutadiene (HTPB) matrix in AP/HTPB propellants were studied via an all-atom molecular dynamics simulation.
Ge Dong, He Liu, Lei Deng, Haiyang Yu, Xingli Zhou, Xianqiong Tang, Wei Li   +6 more
semanticscholar   +1 more source

Desenvolvimento de tecnologia de pré-polímeros na síntese de poliuretanos empregados em combustíveis sólidos

Química Nova, 2014
The aim of this work was to synthesize a polyurethane polymer matrix using polyols as a raw material to obtain a binder such as the hydroxyl terminated polybutadiene (HTPB) pre-polymer in energetic material formulation.
Marcelo Clemente, Roberta J. Rocha, Koshun Iha, José A. F. F. Rocco   +3 more
doaj   +1 more source

Synthesis and characterization of polyurethane based on hydroxyl terminated polybutadiene and reinforced by carbon nanotubes

Egyptian Journal of Petroleum, 2015
Nanocomposites consisting of multi wall carbon wall carbon nano tubes MWCNT/polyurethane (PU) had been successfully prepared based on hydroxy terminated polybutadiene HTPB and the prepared MWCNT.
S.A. Shokry, A.K. El Morsi, M.S. Sabaa, R.R. Mohamed, H.E. El Sorogy   +4 more
doaj   +1 more source

Fabrication of Hydroxy-Terminated Polybutadiene with Piezoelectric Property by Functionalized Branch Chain Modification

Molecules, 2023
Hydroxyl-terminated polybutadiene (HTPB)-based piezoelectric polymer (m-HTPB) is prepared for the first time by functionalized branch chain modification strategy.
Bo Yuan, Guang Wang, Wenxue Tian, Li Zhou, Chunxiang Li   +4 more
doaj   +1 more source

Oil and fat absorbing polymers [PDF]

, 1977
A method is described for forming a solid network polymer having a minimal amount of crosslinking for use in absorbing fats and oils. The polymer remains solid at a swelling ratio in oil or fat of at least ten and provides an oil absorption greater than ...
Marsh, H. E., Jr.
core   +1 more source

Electro‐Chemo‐Mechanical Coupling in Composite Cathodes of Sulfide‐Based All‐Solid‐State Batteries: Pathways, Degradation, and Design Rules

Advanced Science, EarlyView.
This review provides an integrated framework for achieving superior electrochemical performance in sulfide‐based all‐solid‐state batteries. It first delineates mechano‐electrochemical failure modes of cathode active materials and solid electrolytes, then outlines engineering principles for particle morphology, electronic and ionic conduction, and ...
Gawon Song, Seonghyun Lee, Minseon Lee, Junsung Park, Kyu Tae Lee   +4 more
wiley   +1 more source

Bio‐Based Polyurethanes: Mechanical Performance, Structure–Property Relationships, and Future Directions

Journal of Polymer Science, EarlyView.
This review examines bio‐based polyurethanes from renewable feedstocks, focusing on structure‐property relationships governing mechanical performance. It analyzes reinforcement strategies, benchmarks against petrochemical counterparts, and explores future directions, including non‐isocyanate routes and circular economy integration for sustainable high ...
Khaled Chawraba, Hussein Medlej, Mohamad Sakr, Akram Hijazi, Abrar Hussain   +4 more
wiley   +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

Assessment of the Interaction between Ammonium Dinitramide and Isocyanurate Bonding Agents for Application on Technologies of Composite Solid Propellants

Propellants, Explosives, Pyrotechnics, EarlyView.
This work investigates the interaction of two isocyanurate‐based bonding agents with ammonium dinitramide: triallyl isocyanurate and 1,3,5‐tris(2‐hydroxyethyl) isocyanurate, which contain alkene and hydroxyl functional groups in their side chains, respectively.
Jessica O. Silva, Josiane R. C. Silva, Kamila P. Cardoso, Milton F. Diniz, Márcio Y. Nagamachi, Luiz F. A. Ferrão   +5 more
wiley   +1 more source