High-energy explosives are renowned for their high density and superior detonation performance. With the advancement of weaponry and aerospace technology, there is an increasing demand for enhanced performance of high-energy explosives. Cellulose, as a renewable and abundant resource with excellent structural controllability and modifiability, has rapidly garnered widespread attention as a carrier for high-energy explosives since its initial reports. In this study, cellulose was employed as the carrier, and a codissolution process was utilized to investigate the crystal growth behavior of high-energy explosives such as HMX, RDX, CL-20, TKX-50 within the cellulose matrix. Supercritical drying technology was applied to prepare composite energetic aerogel three-dimensional materials. The results demonstrate that different high-energy explosive crystals exhibit distinct growth patterns within the cellulose gel matrix. The cellulose aerogel achieved the highest loading capacity for HMX, reaching 94.97%. The resulting HMX composite energetic material exhibited an increased activation energy of 582.9 kJ/mol, a characteristic drop height (H50) of 71.4 cm, and a friction sensitivity reduced to 0%. The measured detonation velocity reached 8264 m/s. The successful integration of cellulose with high-energy explosives not only expands the application scope of cellulose but also injects new vitality into the field of high-energy explosive performance enhancement.
Bian et al. (Fri,) studied this question.