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Volume 37 Issue 6
Dec 2023
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Chinese Journal of High Pressure Physics  > 2023  >  37(6): 063402.
ZHANG Gongzhen, HE Zhiwei, RAN Xianwen, CHENG Wei, WANG Yangwen, LI Zhiyuan, ZHANG He. Preparation, Characterization and Thermal Decomposition Properties of ANPyO@PDA Composites[J]. Chinese Journal of High Pressure Physics, 2023, 37(6): 063402. doi: 10.11858/gywlxb.20230697
Citation: ZHANG Gongzhen, HE Zhiwei, RAN Xianwen, CHENG Wei, WANG Yangwen, LI Zhiyuan, ZHANG He. Preparation, Characterization and Thermal Decomposition Properties of ANPyO@PDA Composites[J]. Chinese Journal of High Pressure Physics, 2023, 37(6): 063402. doi: 10.11858/gywlxb.20230697
shu

Preparation, Characterization and Thermal Decomposition Properties of ANPyO@PDA Composites

doi: 10.11858/gywlxb.20230697
  • 1.

    School of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, China

  • 2.

    National University of Defense Technology, Changsha 410073, Hunan, China

  • 3.

    Anhui Jiangnan Chemical Industry Co. LTD., Hefei 230094, Anhui, China

  • Received Date: 26 Jul 2023
  • Rev Recd Date: 09 Aug 2023
    • Available Online: 12 Dec 2023
  • Issue Publish Date: 15 Dec 2023
    Abstract
  • In order to improve the thermal stability of 2,6-diamino-3,5-dinitropyridine-1-oxide (ANPyO), polydopamine was coated on the surface of ANPyO crystal by in situ polymerization, based on the principle of dopamine oxidation self-polymerization. ANPyO@PDA core-shell composite materials with different coating rates were prepared by adjusting the reaction time. The morphology, crystal structure, molecular structure, and element content of ANPyO@PDA composites were characterized by scanning electron microscopy (SEM), X-ray diffractometer (XRD), Fourier transform infrared spectrometer (FT-IR) and X-ray photoelectron spectroscopy (XPS). The thermal decomposition performance of the ANPyO@PDA composites was also tested by thermogravimetry-differential scanning calorimetry (TG-DSC). The results show that PDA formed uniform and compact coating on the surface of the ANPyO, and the crystal and molecular structures of the ANPyO remained unchanged after the PDA coating. Additionally, the coating rate gradually increased with the growth of coating time. The thermal decomposition peak temperatures of the ANPyO were increased by 1.97 and 1.95 °C, respectively, as well as the apparent activation energy increased by 25.04 and 139.33 kJ/mol, and the critical temperatures of the thermal explosion were increased by 23.12 and 20.04 ℃ after PDA coating for 3 and 9 h, respectively. The thermal stability and thermal safety of the ANPyO@PDA composites are higher than that of the ANPyO.

     

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