以木材液化物和六次甲基四胺为原料,利用熔融纺丝法制备初始纤维.将初始纤维置于甲醛和盐酸混合液中进行固化处理制成木材液化物碳纤维原丝.考察了固化处理对木材液化物碳纤维原丝的孔隙结构、晶态结构及热稳定性的影响.结果表明:初始纤维和原丝的吸附等温曲线属于Ⅱ型吸附等温线,初始纤维和原丝比表面积分别为0.517m2·g-1和0.142m2·g-1.杉木木粉中具有典型的纤维素Ⅰ晶体衍射峰；初始纤维和原丝中纤维素Ⅰ特征峰消失,且18.8°附近出现新的衍射峰,说明形成了新的晶态物质；原丝中18.8°附近的特征衍射峰增强,结晶度提高.初始纤维失重率为88.3％,原丝为60％,初始纤维到原丝表观活化能由31.31 kJ·mol-1增大到39.18 kJ·mol-1,原丝热稳定性提高.
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