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以酚醛树脂微球为基体,经1100℃碳化处理、循环往复升温工艺,成功制备出了密度0.65g·cm-3的密堆积结构碳材料,并对这种新型碳材料进行组织结构分析和特性表征。SEM测试结果显示碳微球结合紧密、可重复性高;XRD图谱中26°处出现了明显的衍射峰且半高宽较窄,表明无定形碳相变趋势明显;PL谱测试结果表明在400~500nm之间出现了明显的发光峰,该衍射峰伴随热处理温度的升高发生了明显的“蓝移”现象。实验表明:1100℃碳化处理、循环往复升温工艺得到的PL谱,发光峰平滑、乱峰数量少、杂质峰强度低,碳化除杂效果明显。
Based on the phenolic resin microspheres, a close-packed carbon material with a density of 0.65 g · cm-3 was successfully prepared by carbonization at 1100 ℃ and cyclic temperature-rising process. The microstructure and properties of the new carbon material were also studied. Characterization. The results of SEM showed that the microspheres were tightly bonded and had high repeatability. The XRD patterns showed obvious diffraction peaks at 26 ° and narrow FWHM, indicating that the phase transition of amorphous carbon was obvious. The results of PL spectroscopy showed that at 400 ~ 500nm between the obvious luminescence peak, the diffraction peak with the heat treatment temperature of the obvious “blue shift” phenomenon. The experimental results show that the PL spectrum obtained by carbonization at 1100 ℃ and the cyclic temperature rise process have the luminescence peaks smoothed, the number of chaotic peaks is small, the impurity peak intensity is low and the effect of carbonization and impurity removal is obvious.