溶液喷射法制备聚丙烯腈基纳米碳纤维的研究

Study on the preparation of polyacrylontrile-based carbon nanofibers by solution blowing

采用溶液喷射法制备了聚丙烯腈(PAN)纳米纤维,探讨了纺丝工艺参数对纤维形貌和直径的影响,优化了纺丝工艺,制得了直径分布为160～380 nm的PAN纳米纤维;经260℃空气氛围预氧化,900℃氮气氛围碳化,对得到的纤维的结构和形貌进行了表征,结果表明得到了平均直径为170 nm的纳米碳纤维。

Carbon nanofibers were prepared by blowing of polyacrylonitrile （PAN） solution, and following stabilization and carbonization treatment. The effect of spinning parameters, including PAN concentration, air- blowing pressure, and solution injecting rate, on the morphology of nanofibers precursor were investigated. After oxidized in 260℃ air and carbonized in 900 ℃ He, nanocarbon fibers were manufactured. The morphology and structure of PAN nanofibers, preoxidized nanofibers and carbonized nanofibers were characterized. The result showed that spinning parameters played important role in determining the dominating structure of product morphology, and carbon nanofibers with diameters of 100~340 nm were produced.