论文部分内容阅读
以速生杉木原料,经过苯酚液化物后加入六次甲基四胺熔融纺丝,初纺纤维固化处理后直接炭化制备出碳纤维,利用SEM、FTIR、Raman光谱和元素分析等对碳纤维进行了表征。研究结果表明:随着炭化温度的提高,杉木苯酚液化物碳纤维中出现了类石墨碳材料典型的马鞍状拉曼谱图,其D峰和G峰分别位于1360 cm-1和1595 cm-1处;碳纤维样品的无序化程度R值逐渐减小,石墨微晶尺寸La逐渐增大,纤维内部微观结构逐步趋于有序化。1000℃获得的碳纤维表面光滑,断面形状为椭圆形,其C、O、H的质量分数分别为94.04%、4.26%、0.5%。
FTIR was used to produce carbon fiber by adding hexamethylenetetramine melt spinning after phenol liquefaction and carbon fiber directly after carbon fiber curing treatment. The carbon fiber was characterized by SEM, FTIR, Raman spectroscopy and elemental analysis. The results show that with the increase of carbonization temperature, a typical saddle-shaped Raman spectrum of graphite-like carbon material appears in the liquefied carbon fiber of Chinese fir, and the D peak and G peak are located at 1360 cm-1 and 1595 cm-1, respectively ; The degree of disordering of the carbon fiber samples R value decreases gradually, the crystallite size La of the graphite increases gradually, and the microstructure of the fiber gradually tends to order. The carbon fiber obtained at 1000 ℃ has a smooth surface and an oval cross section. The mass fraction of C, O and H is 94.04%, 4.26% and 0.5% respectively.