Cyclotetramethylene

WebMay 21, 2024 · Steady-state and time-resolved infrared (IR) studies of cyclotetramethylene tetranitramine (HMX) were carried out, using the asymmetric nitro-stretch as probe, to investigate its solution structures and vibrational energy transfer processes in pure dimethyl sulfoxide (DMSO) and in a DMSO/water mixtu … WebJun 23, 2024 · Cyclotetramethylene tetranitramine (HMX) is a secondary explosive widely used in military and civilian applications. Its decomposition, which takes place with the release of significant amounts of energy, may be triggered by mechanical and thermal stimuli. Understanding the conditions leading to reaction initiation is required in order to ...

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WebOct 2, 2001 · We found that the dissociation of the RDX molecule in the bulk crystal is characterized by the different energetic barriers for cleavage of N−NO 2 bonds, unlike the gas-phase molecule, where all three of the energies are equal. WebJun 5, 2024 · We constructed five novel cyclotetramethylene tetranitramine (HMX) derivatives based on the skeleton of HMX ring. The molecules were fully optimized at the … iowa code money laundering https://eastwin.org

TATB/HMX共晶炸药的制备及性能研究-侯聪花刘志强张园萍陈云阁 …

WebOct 1, 2024 · A thermomechanical consistent model for cyclotetramethylene tetranitramine (HMX) is developed, which considers material anisotropy, nonlinear thermoelasticity, … WebOct 4, 2004 · The secondary explosive cyclotetramethylene-tetranitroamine (HMX) exists in a variety of crystal structures; the most widely used being the β-phase which is stable at room temperature and pressure. On heating, a more impact sensitive form (δ phase) is produced. The nonlinear optical technique of second harmonic generation (SHG) can be … WebThe different carrier type is a hollow carrier, expandable shaped charged gun, and other types, uses explosive types such as cyclotrimethylene trinitramine (RDX), cyclotetramethylene trinitramine (HMX), hexanitrosilbene (HNS), with high pressure and low pressure, applied onshore and offshore. iowa code long term care

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Cyclotetramethylene

CYCLOTETRAMETHYLENE TETRANITRAMINE supplier

WebCyclotetramethylene tetranitramine (HMX) Hexanitrohexaazaisowurzitane (HNIW or CL-20) Triaminotrinitrobenzene (TATB) Polymer Bonded Explosives (PBX) Testing Explosives; Insensitive explosives; Shaped … WebOct 1, 2024 · The high melting explosive (HMX) cyclotetramethylene-tetranitramine is plagued by issues such as structural instability, increased sensitivity, and unwanted deflagration at elevated temperatures ...

Cyclotetramethylene

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WebJan 15, 2024 · Cyclotetramethylene-tetranitramine (HMX) is an exceptional high explosive with extremely high detonation power (V det ≈9.1 km/s and P det ≈39.2 GPa) and … WebCyclooctatetraene (COT) is a nonaromatic 4n π-conjugated system with a non-planar tub-shaped geometry and potential energy surfaces at the ground state. [ 1] …

WebAug 10, 2024 · The role of microstructure in the impact induced temperature rise in hydroxyl terminated polybutadiene (HTPB)–cyclotetramethylene-tetranitramine (HMX) energetic materials using the cohesive finite element method: Journal of Applied Physics: Vol 128, No 6 No Access Submitted: 19 April 2024 Accepted: 16 July 2024 Published Online: 10 … WebApr 26, 2024 · The stress wave propagation and fracture formation in HMX-Estane polymer-bonded explosive under an impact loading were studied using material point method mesoscale simulation. The stress wave prop...

WebCycloartane. Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Cycloartane is a triterpene, also known as 4,4,14 … WebJun 13, 2024 · An experimental investigation into laser ablation of secondary explosives, cyclotetramethylene tetranitramine (HMX), has been carried out by using a solid-state laser at the wavelength of 1064 nm. The ion particles of decomposition were detected by using a time-of-flight mass spectrometer.

WebCyclotetramethylene tetranitramine (HMX) is a molecular crystal used as explosive in a broad range of civilian and military application. Its mechanical behavior is important as it …

WebNational Center for Biotechnology Information. 8600 Rockville Pike, Bethesda, MD, 20894 USA. Contact. Policies. FOIA. HHS Vulnerability Disclosure. National Library of … oops through javaWebCyclotetramethylene tetranitramine (HMX) is a power-ful and relatively insensitive nitroamine high explosive, which is commonly used in military (Pravicaet al., 2010;Shariaet al., 2013). Typical structure of HMX is shown in Figure 1. A few number of studies were conducted to establish the numerical model of laser initiation of HMX (Dik et al., oops toll brothersWebJun 1, 2016 · For an impact velocity of 1 km s −1 and a void radius of 4 nm, the void collapse process includes three stages; the dominant mechanism is the convergence of upstream molecules toward the centerline and the … oops ticketsWebSep 1, 2024 · Cyclotetramethylene tetranitramine (HMX) is a well-known high explosive used as the main component in polymer bonded explosives (PBXs). iowa code owi 1st offenseWebThe second-order elastic constants for cyclotetramethylene tetranitramine (Β-HMX) single crystals were determined using the impulsive stimulated thermal scattering (ISTS) method. Despite the low symmetry of these crystals, the complete set of 13 elastic constants were determined accurately from acoustic velocity measurements using samples cut ... oops through java online compilerWebJun 19, 2006 · Single crystals of cyclotetramethylene tetranitramine (HMX) were isentropically compressed perpendicular to (010) and (011) faces at the Sandia Z-Machine. A 50 GPa ramped magnetic pressure load of about 200 ns rise time loaded four specimens of each orientation. HMX specimens were from 300 – 600 μ m thick. Velocity histories at … oops topicWebNov 1, 2024 · A physically-based anisotropic thermal-mechanical-chemical crystal model is developed for cyclotetramethylene tetranitramine (HMX), which includes nonlinear thermoelasticity, inelasticity due to both dislocation-based plasticity and shear cracking damage, melting, and single step chemical reaction. iowa code peace officer