摘要
采用静电纺丝技术制备了聚丙烯腈/多壁碳纳米管(PAN/MWNTs)复合纳米纤维。利用红外光谱和扫描电镜分别对纳米纤维结构和形貌进行了表征分析,并用高阻仪和矢量网络分析仪分别对PAN/MWNTs纳米纤维的导电性能及电磁屏蔽性能进行了测试。结果表明,随着MWNTs含量的增加,纤维直径减小,纤维的导电性能增强;纳米纤维膜在低频段均表现良好的电磁屏蔽效果,在1～15MHz频率范围内,当碳纳米管的含量达到10%以上时,屏蔽率达到90%以上。
Composite nanofibers of PAN/MWNTs have been made by electrospinning technology. The composi-tion, structural and morphology details of the fibers were characterized by Fourier Transform Infrared spectrum（FTIR）, scanning electron microscopy（SEM）, while the conductive and electromagnetic properties were tuned by High resistance meter and Vector network analyzer. The results indicated that fiber diameter value decreased and conductive performance increased with the increase of MWNTs, besides, with the perfect electromagnetic effectiveness of nanofibers under low fre-quency, the electromagnetic shielding rate can reach about more than 90 % between 1MHz and 15MHz frequency band with the concentration of MWNTs above 10G.
出处
《化工新型材料》
CAS
CSCD
北大核心
2013年第2期21-23,55,共4页
New Chemical Materials
基金
教育部长江学者和创新团队发展计划(IRT1135)
