高压物理学报2023，Vol.37Issue(6)：104-116,13.DOI:10.11858/gywlxb.20230697
ANPyO@PDA复合材料的制备、表征及热分解性能
Preparation,Characterization and Thermal Decomposition Properties of ANPyO@PDA Composites
摘要
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 ℃,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.关键词
2,6-二氨基-3,5-二硝基吡啶氧化物(ANPyO)/聚多巴胺(PDA)/核壳结构/热稳定性/热安全性Key words
2,6-diamino-3,5-dinitropyridine-1-oxide(ANPyO)/polydopamine(PDA)/core@shell structure/thermal stability/thermal safety分类
数理科学引用本文复制引用
张功震,何志伟,冉宪文,程维,汪扬文,李志远,张贺..ANPyO@PDA复合材料的制备、表征及热分解性能[J].高压物理学报,2023,37(6):104-116,13.基金项目
国家自然科学基金(51404006) （51404006）
