Abstract:

Graphite fibers with different performance values were prepared at different graphite temperatures by using carbon fiber of T800（made in Japan，Toray Company）as raw material. The microstructures of these graphite fibers（1^#，2^#，3^#，4^#，5^#）were investigated by X-ray diffraction and Raman spectroscopy. The results showed that the sizes of graphite crystallite L_c，L_a10，L_a110 and the degree of orientation increased with the increase of graphitization temperature，while d₀₀₂ and the orientation angle gradually reduced. The higher the graphitization temperature，the greater the degree of graphitization and crystallinity of the graphite fibers.

摘要：

以日本东丽公司T800碳纤维为原料，经不同温度的连续石墨化处理得到性能不同的高模量碳纤维。利用X射线衍射（XRD）和激光拉曼光谱（Raman光谱）研究了5种自制PAN基高模量碳纤维（1^#，2^#，3^#，4^#，5^#）的微观结构。结果表明：随着石墨化温度的升高，石墨微晶尺寸L_c、L_a10、L_a110及取向度均逐渐增大，而d₀₀₂和取向角则逐渐减小。石墨化温度越高，碳纤维的石墨化程度越高，结晶度越大。