Influence of Chopped Carbon Fibers on a Novel Mechanical Enhanced Micro-porous Propellants

ABSTRACT

Micro-porous propellants enhanced with chopped carbon fibers (CCFs) were studied to investigate the effects of CCFs on the mechanical properties, thermal behavior, and combustion performance. The results indicated that when the content of CCFs below 2.5 wt%, CCFs can be evenly and randomly dispersed, without obvious aggregation. The mechanical properties were effectively tailored by adding CCFs with different amount into composition, and the mechanism of enhancement is further elaborated. When the content is 2.5 wt%, the impact strength and tensile strength show the optimal value. Furthermore, after the addition of CCFs, micro-porous propellants still exhibit significant progressive combustion properties and their exothermic peaks change slightly.

KEYWORDS:

• Micro-porous propellants
• chopped carbon fibers
• mechanical properties
• thermal properties
• combustion performance

Acknowledgments

This work was supported by the Opening Project of Key Laboratory of Special Energy Materials (Nanjing University of Science and Technology), Ministry of Education, China (No. 2019SEM05).

Additional information

Funding

This work was supported by the the National Natural Science Foundation of China [Grant No. 22005143].