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采用激光拉曼光谱技术研究了粘胶基炭纤维在不同活化温度(800,900,1 000℃)下所得活性炭纤维的表面微观结构,并用自制的样品旋转装置成功实现了拉曼旋转扫描。结果表明:随着活化温度的升高,炭纤维的石墨化程度逐渐提高,同时发现D峰和G峰的半高宽也逐渐增大,表明活化温度对表面孔洞缺陷和微晶分布均有影响,这与XRD的测试结果一致。利用拉曼光谱技术揭示了活性炭纤维表面微观结构的异质性。
Laser Raman spectroscopy was used to study the surface microstructure of activated carbon fibers obtained from viscose-based carbon fibers at different activation temperatures (800, 900 and 1000 ℃). The Raman scanning was successfully achieved with a self-made sample rotating device. The results show that the graphitization degree of carbon fibers increases with the increase of activation temperature, and the half-width of D-peak and G-peak also increase gradually, indicating that the activation temperature has an influence on the surface porosity and crystallite distribution , Which is consistent with the XRD test results. Raman spectroscopy was used to reveal the microstructure heterogeneity of activated carbon fibers.