Thermal expansion and theoretical density of 2,2′,4,4′,6,6′-hexanitrostilbene
Journal of Materials Science(2010)
Abstract
The linear coefficient of thermal expansion (CTE) and the theoretical density are important for energetic materials. To obtain the CTE and theoretical density of 2,2′,4,4′,6,6′-hexanitrostilbene (HNS), X-ray powder diffraction (XRD) together with Rietveld refinement was employed to estimate the dimension and density change at a crystal lattice level, in the range of temperature 30–240 °C. The CTE of a -, b -, c -axis and volume were obtained as 7.6719 × 10 −5 /°C, 6.8044 × 10 −5 /°C, 1.1192 × 10 −5 /°C and 16.725 × 10 −5 /°C, respectively. Also, the possible reasons for the expansion property of HNS have been discussed by comparing its structure with 1,3,5-triamino-2,4,6-trinitrobenzene (TATB). Based on the refined lattice parameters, the theoretical densities of HNS at various temperatures were obtained. By extrapolation of linear fitting the theoretical density of HNS at 20 °C was gotten as 1.7453 g/cm 3 . Furthermore, a good thermal resilience of HNS has also been observed when the temperature returned from 240 to 30 °C.
MoreTranslated text
Key words
Theoretical Density,Rietveld Refinement,Anisotropic Thermal Expansion,Refined Lattice Parameter,High Energy Material
AI Read Science
Must-Reading Tree
Example
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined