摘要
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%。
After melt-spinning by adding hexamethylenetetramine and the curing treatment, carbon fibers were prepared from the phenolated Chinese fir （Cunninghamia lanceolata） by using the direct carbonization method. The structure characterization of carbon fibers was studied by SEM, FTIR, Raman spectroscopy and elemental analysis. The results show that with carbonization temperature rising, the Raman spectra of carbon fibers from the phenolated Chinese fir have the D peak at 1360 cm^-1 and the G peak at 1595 cm^-1 that are similar to other graphitoidal materials. At the same time, the value of the disordering R decreases and the crystallite sizes La increases with the rise of carbonization temperature. It is found that the microstructure of the carbon fibers becomes more and more ordered. The carbon fibers at 1000°C have smooth surface and an ellipse cross-section, and the elemental mass fractions of the carbon fibers are 94.04% for C, 4.26% for O and 0.5% for H, respectively.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2009年第2期101-106,共6页
Acta Materiae Compositae Sinica
基金
国家自然科学基金(30471351)
天津科技大学引进人才科研启动基金(20070447)
关键词
碳纤维
杉木
结构表征
炭化
温度
carbon fiber Chinese fir structure charaeterization earbonization temperature
