摘要
以聚丙烯（PP）为热解高聚物、酚醛树脂（PF）为碳纤维前躯体进行共混，采用熔融纺丝法将共混体系纺丝，对得到的纤维拉伸之后碳化去除去聚丙烯，得到酚醛基纳米碳纤维。采用红外光谱、扫描电镜等对PP／PF共混体系的相容性及微观结构进行分析，研究了纺丝牵伸比、降温母粒含量对纳米碳纤维形态的影响；用x射线衍射技术对纳米碳纤维的微晶结构进行研究。结果表明：随着降温母粒加入量的增加，酚醛树脂的分散尺寸增大；随着牵伸比的增加，纳米碳纤维的直径减小。XRD测试分析发现PP／PF共混纤维600℃碳化处理后已经开始产生一些石墨微晶，随碳化温度的升高，微晶长大，碳结构开始更趋规整、有序。
Phenol-formaldehyde （PF） and polypropylene （PP） blend fibers were prepared by melt-spinning technique and carbonized at high temperature under a nitrogen atmosphere. After carbonization of the blend fibers, the PP component removed and the PF component left in the form of thin carbon fibers. The compatibility of PP/PF blend and the effects of experimental parameters, such as the content of chemical degradation agent, the draw ratio on the morphology of the thin carbon fiber were investigated via FTIR and SEM. Graphite structures of the thin fibers under different carbonization conditions were investigated via XRD.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2007年第A06期2218-2220,共3页
Journal of Functional Materials
基金
基金项目：国家博士后科学基金资助（2005037463）
关键词
聚丙烯
酚醛树脂
共混
纺丝
纳米碳纤维
phenol-formaldehyde
polypropylene
spinning
blend
carbon nanofiber
