利用木材苯酚液化物合成纺丝液,熔融纺丝制成新的炭纤维原丝,研究了纺丝液合成因素对原丝性能的影响.试验结果表明:增加合成纺丝液时液化原料中的苯酚/木材比(液固比),则原丝的力学性能提高明显,其中液固比由3增加至4时,原丝拉伸强度增加了近9倍;合成剂用量的增加却导致原丝力学性能的降低,当合成剂用量为6%时,原丝的拉伸强度和拉伸模量降幅较明显,而断裂伸长率的最大降幅却出现在合成剂用量为4%时;原丝的拉伸强度和拉伸模量随合成温度的升高而增加,但增幅较小,断裂伸长率随合成温度的升高却呈下降趋势,且从110℃升高到115℃时断裂伸长率降幅较大;原丝的力学性能随合成纺丝液升温时间的增加而先升高后降低,升温时间为40 min时制备的炭纤维原丝的力学性能最优.
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