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Dynamic pressure thermal analysis of double-base propellants containing RDX

100%
Liu R., Zhang T., Yang L., Zhou Z.
Open Chemistry
|
2014
|
vol. 12
|
issue 6
672-677
EN
The thermal decomposition of five double-base propellants modified with RDX was studied by dynamic pressure thermal analysis to determine the effect of RDX content (20–60 wt.%) on performance. All have good stability. Both stability and activation energy increase as RDX increases from 20% to 50% then decrease; 50% RDX performs best. The decomposition mechanism is affected by RDX content and temperature. Increasing temperature induces autocatalysis and accelerates decomposition.
2
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New approach to spindle thermal extension measuring based on machine vision for the vertical maching centre

89%
Su D., Cai X., Li Y., Zhao W., Zhang H., Su D., Cai X., Li Y., Zhao W., Zhang H.
Metrology and Measurement Systems
|
2021
|
vol. 28
|
issue 2
3
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Research on thermal decomposition of trinitrophloroglucinol salts by DSC, TG and DVST

88%
Liu R., Zhang T., Yang L., Zhou Z., Hu X.
Open Chemistry
|
2013
|
vol. 11
|
issue 5
774-781
EN
The thermal decomposition of the four nitrogen-rich salts of ammonia (NH4), aminoguanidine (AG), carbohydrazide (CHZ) and 5-aminotetrazo (ATZ) based on trinitrophloroglucinol (H3TNPG) was investigated using the differential scanning calorimetry (DSC), thermogravity (TG), and dynamic vacuum stability test (DVST). DSC and TG methods research the complete decomposition, while DVST method researches the very early reaction stage. The peak temperatures of DSC curves are consistent with the temperatures of maximum mass loss rates of TG curves. The apparent activation energies of these H3TNPG-based salts obtained by DSC and DVST have the same regularity, i.e., (ATZ)(H2TNPG)·2H2O 2O 4(H2TNPG) 2TNPG). The thermal stability order is (ATZ)(H2TNPG)·2H2O 2O 2TNPG) 4(H2TNPG), which was evaluated by DVST according to the evolved gas amount of thermal decomposition. DVST can monitor the real-time temperature and pressure changes caused by thermal decomposition, dehydration, phase transition and secondary reaction, and also evaluate the thermal stability and kinetics. [...]
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