纺织学报 ›› 2024, Vol. 45 ›› Issue (08): 107-115.doi: 10.13475/j.fzxb.20230501501
WANG Yongzheng1, HUANG Lintao1,2, SONG Fuquan1,3()
摘要:
为实现石油沥青的高值化利用,通过静电纺丝技术制备了沥青/聚丙烯腈复合纳米纤维,并经过预氧化和炭化处理制备了复合碳纳米纤维。采用Box-Behnken响应面法研究了纺丝参数对纤维直径的影响,通过调整石油沥青比例和热处理温度研究了预氧化和炭化过程中纤维的结构转变。结果表明:影响纤维直径的静电纺丝参数主次顺序依次为推流速度、纺丝电压和接收距离;响应面法模型预测值与最佳工艺条件下纤维直径实测值的相对误差为9.13%;当预氧化温度为250 ℃时,预氧化丝具有最大芳构化指数,其相应预氧化度最高;炭化温度与复合碳纳米纤维的石墨化程度呈正相关,随着炭化温度的升高,纤维直径大幅减小,复合碳纳米纤维石墨结构有序性逐渐增加。
中图分类号:
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