1. Preparation, characterization, and thermal decomposition kinetics of high test peroxide gel.
- Author
-
He, Zhi-cheng, Yang, Jin-bo, Nie, Zhan-bin, Zhou, Xing, and Wu, Jian-jun
- Subjects
- *
PROPELLANTS , *CALCIUM ions , *PEROXIDES , *CALCIUM compounds , *SODIUM compounds , *SODIUM alginate , *IR spectrometers - Abstract
High test peroxide gel was prepared by low temperature freezing under the action of calcium ion compound with sodium alginate as a gelling agent. The High test peroxide gel was characterized by ultra depth of field microscope, Fourier infrared spectrometer, rheometer, synchronous thermal analyzer, and electron microscope scanner. The thermal decomposition behavior and reaction kinetics of the gel were investigated. The effective content of H 2 O 2 in the gel before and after aging was also analyzed by KMnO 4 titration. The results show that the content of sodium alginate and the concentration of calcium ion compound directly affect the gelling and rheological properties of high test peroxide gel, and the gel with low sodium alginate content had a more uniform tissue structure. The E α and lg(A /s−1) of the high test peroxide gel decomposition reaction are 69.10 kJ mol−1 and 9.13, respectively. Na 2 O, CaO, CaCl 2 and CaSO 4 are the main components of the high test peroxide gel thermal decomposition condensate products. After ignition, a boron-based high test peroxide gel propellant can produce a steady combustion. After being stored at 263 K for 20 days, the effective content of H 2 O 2 in the gel is 96.50%, and the decomposition rate is only 0.63%. • High test peroxide (HTP) gel was prepared with sodium alginate as a gelling agent. • The HTP gel has good shear thinning property, and the HTP gel containing 10% boron powder could achieve stable combustion after ignition. • The kinetic parameters and most probable mechanism function of thermal decomposition of HTP gel were obtained. • The HTP gel can be stored stably for a long time at low temperatures (≤263 K). [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF