Results 41 to 50 of about 183,821 (190)
InfoMat, EarlyView.Improving the dispersion of nano‐aluminum is of great importance in explosives and propellants. The spherical Al/HMX/CuO energetic micro‐units were prepared using microchannel technology, which significantly improved the uniformity and dispersion of nano‐Al. It also enhanced the mass and heat transfer efficiency between the fuel and oxidizer components,
Gazi Hao +12 more
wiley +1 more source
Infrared microspectroscopic study of the thermo-oxidative degradation of hydroxy-terminated polybutadiene/isophorone diisocyanate polyurethane rubber [PDF]
, 2007 Hydroxy-terminated polybutadiene/isophorone diisocyanate (HTPB-IPDI) polyurethane rubber that was aged in air at elevated temperatures has been studied by infrared microspectroscopy.
Fredericks, Peter M. +3 more
core +1 more source
Polymeric Polyaldehyde Approach to Develop Robust Dynamic Covalent Adaptive Polyimine Networks
Macromolecular Rapid Communications, EarlyView.A versatile approach exploring the synthesis of polymeric polyaldehydes with a polyacrylate backbone bearing pendant aldehyde groups to develop dynamic polyacrylate‐polyimine hybrid materials capable of the built‐in ability for extended operation and enhanced reliability. ABSTRACT Polyimine‐based covalent adaptive networks crosslinked with Schiff bases
Subrata Dolui +8 more
wiley +1 more source
Materials & DesignConventional polyurethanes for implants suffer from hydrolytic/oxidative degradation due to ester/ether bonds. To overcome this, in this research, we have developed aging-resistant implantable medical polyurethanes to address the issue of their limited ...
Minghui Cui +9 more
doaj +1 more source
Propellants, Explosives, Pyrotechnics, EarlyView.ABSTRACT The objective of this paper is to demonstrate the advantage of computationally pre‐screening surface‐modifying material candidates, using density functional theory (DFT), to inform experimental synthesis and formulation efforts. This demonstration focuses on improving the solubility of benzene‐based materials in hydroxyl‐terminated ...
Samantha E. Knoth
wiley +1 more source
A study of solid ramjet fuel containing boron–magnesium mixtures
Propulsion and Power Research, 2017 Solid fuel ramjets (SFRJ) are known for their operational simplicity and high specific impulse. The performance of the SFRJ propulsion system is directly tied to the energy density and combustion behavior of the fuel.
EricT. Sandall +4 more
doaj +1 more source
Propellants, Explosives, Pyrotechnics, EarlyView.ABSTRACT The most common binder used in composite rocket propellants is based on the pre‐polymer hydroxyl‐terminated polybutadiene (HTPB). It has been shown to have excellent mechanical properties and a long life once crosslinked, and studies have examined the kinetics of crosslinking and pot life of energetic formulations with HTPB.
Laurel Hilger +2 more
wiley +1 more source
Journal of Aerospace Technology and Management, 2012 The combustion simulation of ammonium perchlorate was carried out with the software Chemkin, in two steps: the burning behavior of pure ammonium perchlorate and the one of formulated ammonium perchlorate with hydroxyl terminated polybutadiene binder.
Rene Francisco Boschi Gonçalves +3 more
doaj
Thermo-oxidative aging behavior of high-cis1,4-hydroxyl-terminated polybutadiene
Defence TechnologyThis study investigates the thermo-oxidative aging behavior of high-cis hydroxyl-terminated polybutadiene (cis-HTPB, cis-1,4 content > 90%) through integrated multi-scale experiments and molecular simulations.
Xiaoyi Yang +5 more
doaj +1 more source
SPE Polymers, Volume 7, Issue 4, October 2026.Tough Thermo‐Responsive Composite from PBA‐a and Monomer Grafted UFPNR. ABSTRACT In this study, various types and concentrations of ultrafine fully vulcanized powdered natural rubbers (UFPNR) were evaluated on how they affect the toughness of bisphenol A polybenzoxazine (PBA‐a).
Achiraya Pattulee +5 more
wiley +1 more source