Preparation, characterization of RDX/GAP nanocomposites, and study on the thermal decomposition behavior Teng Chen Bingwang Gou GaZi Hao Han Gao Lei Xiao Xiang Ke Shuangfeng Guo Wei Jiang 10.6084/m9.figshare.7272491.v1 https://tandf.figshare.com/articles/journal_contribution/Preparation_characterization_of_RDX_GAP_nanocomposites_and_study_on_the_thermal_decomposition_behavior/7272491 <p>1, 3, 5-trinitro-1, 3, 5-triazinane/Glycidylazide polymer (RDX/GAP) energetic nanocomposites were fabricated via a facile sol-gel method. Morphologies and structure characterization of RDX/GAP energetic nanocomposites were studied by scanning electron microscopy (SEM), Raman and Fourier-transform infrared spectroscopy (FT-IR). SEM images indicated the sizes of RDX particles in RDX/GAP nanocomposites were in nanoscale. FT-IR spectra of RDX/GAP nanocomposites showed the conjunct characteristics of RDX and GAP, implying RDX particles were trapped in GAP gel matrix. Raman detection revealed the crystal form of RDX maintained original α-form during sol-gel process. The thermal kinetics and thermodynamics of RDX/GAP energetic nanocomposites were investigated by differential thermal analyzer (DTA) under various heating rates (5, 10, 15, and 20°C min<sup>−1</sup>). The kinetic and thermodynamic parameters of the energetic nanocomposites, such as activation energy (<i>E</i>a), activation enthalpy (ΔH<sup>≠</sup>), activation entropy (ΔS<sup>≠</sup>), and activation Gibbs free energy of (ΔG<sup>≠</sup>) were obtained. The activation energies of RDX/GAP nanocomposites were lower than those of raw RDX and GAP-RDX mechanical mixtures, indicating RDX/GAP nanocomposites presented high thermolysis activities. The thermodynamic parameters presented a rising trend when the contents of RDX increase. The critical temperature of thermal explosion (<i>T</i><sub>b</sub>) and the self-accelerating decomposition temperature (<i>T</i><sub>SADT</sub>) based on the activation energy were also obtained.</p> 2018-10-30 18:57:45 Critical temperature of thermal explosion kinetics RDX/GAP nanocomposites self-accelerating decomposition temperature thermodynamics