Application of Modified CNFs in High Energy Nitramine Gun Propellant

Modified nanocellulose fibers (MCNFs) were added to the high energy nitroamine gun propellant to explore its influence on the mechanical and energy properties of the gun propellant. In this paper, nanocellulose fibers (CNFs) and MCNFs with a content of 1% were added in the high energy nitroamine gun propellant formula. The mechanical properties, fracture surface structure and energy performance are characterized by the impact strength test equipment, universal material experiment machine, scanning electron microscope (SEM) and closed vessel test. The results show that in terms of low-temperature tensile properties, low-temperature compression properties, and low-temperature impact resistance, the MCNFs-containing propellant samples increased by 2.97%, 1.94%, and 20.4%, respectively, compared with the CNFs-containing propellant samples. The difference in energy properties between the two is not significant. Compared with CNFs, MCNFs can better combine with nitrocellulose matrix in microstructure.