In:
New Journal of Chemistry, Royal Society of Chemistry (RSC), Vol. 46, No. 47 ( 2022), p. 22729-22738
Kurzfassung:
In this study, various polymer materials, such as polystyrene (PS), polymethyl acrylate (PMA), and polyvinyl pyrrolidone (PVP), are successfully encapsulated on the surface of alpha-aluminum hydride (α-AlH 3 ) by the in situ polymerization method. The different polymers on the surface of α-AlH 3 can lead to a tremendous enhancement of the material in terms of different properties. Due to the good heat resistance of PS, α-AlH 3 @PS composites take 625.25 min to lose 1% mass, and the activation energy increased by 11.72 kJ mol −1 compared with that before coating, showing good thermal stability. The high degree of cross-linking polymerization of PMA on the surface isolates α-AlH 3 from an external environment, enabling it to maintain a high heat of combustion even after extreme humidity and heat treatment respectively. In addition, PVP has a high adsorption capacity for α-AlH 3 , which can not only improve the thermal and wet stability of α-AlH 3 but also increase its electrostatic susceptibility from 24.6 mJ to 163.2 mJ. The in situ polymerization of encapsulated α-AlH 3 has promising applications in aerospace and weapon fields, and the resulting α-AlH 3 @PVP has potential applications in solid propellant formulations.
Materialart:
Online-Ressource
ISSN:
1144-0546
,
1369-9261
Sprache:
Englisch
Verlag:
Royal Society of Chemistry (RSC)
Publikationsdatum:
2022
ZDB Id:
1472933-7