Application of free electron laser in aramid processing

	Application of free electron laser in aramid processing
	Wu, YJ; Yang, LM; Xu, YZ; Yang, XP; Li, YG; Wang, MK; Wang, DJ; Wu, JG; Xu, DF; Yang XP(杨学平)
刊名	CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
	2006
卷号	27 期号:1 页码:#REF!
关键词	IR-FEL aramid fiber necking phenomenon
其他题名	自由电子激光对芳香聚酰胺纤维热处理的研究
通讯作者	Xu, YZ (reprint author), Peking Univ, Dept Chem, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100081, Peoples R China.
英文摘要	Because the melting temperature of aramid is higher than its thermo-decomposition temperature, processing of aramid fiber in the molten state is not feasible. Here we propose an approach to process aramid fiber using infrared Free Electron User(FEL). The temporal structure of the FEL pulses allows the fiber to be excited to higher vibrational levels so that the polymer becomes soft enough to be processed without significant thermo-decomposition. Microscopic observation using convention optical microscope and polarized technique shows that "necking phenomenon" and re-orientation occur on an aramid fibrous sample that was treated with FEL under external strain. In comparison with the the sample without treatment of FEL, significant changes are observable on the morphology of the broken aramid fiber treated with FEL. The above results strongly suggest that the aramid fiber is molten under the excitation of FEL. FTIR spectroscopic studies show that no thermal decomposition was observed on the aramid sample after FEL treatment. The above result may be helpful to develop a new way to process aramid in the future.
学科主题	Chemistry
类目[WOS]	Chemistry, Multidisciplinary
收录类别	SCI
WOS记录号	WOS:000234815500036
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/226451]
专题	高能物理研究所_多学科研究中心
推荐引用方式 GB/T 7714	Wu, YJ,Yang, LM,Xu, YZ,et al. Application of free electron laser in aramid processing[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2006,27(1):#REF!.
APA	Wu, YJ.,Yang, LM.,Xu, YZ.,Yang, XP.,Li, YG.,...&王鸣凯.(2006).Application of free electron laser in aramid processing.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,27(1),#REF!.
MLA	Wu, YJ,et al."Application of free electron laser in aramid processing".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 27.1(2006):#REF!.