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《China Synthetic Fiber Industry》 2006-05
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Effect of heat treating temperature on crystallization and orientation of PET combined filament yarn

Wang Ni , Zhang Jianchun,Lai Kan, Sun Runjun (College of Textiles, Donghua University, Shanghai 200051 ;The Quartermaster Research Institute, the General Logistics Department, CPLA, Beijing 100088;Xi'an Polytechnic University, Xi'an 710048)  
The multi-difference PET POY that produced with the same spinneret was used as raw material to produce combined filament yarns by drawing and heat treating on a parallel drafting machine. The effects of drawing and heat setting temperatures on the crystallization and orientation of the fiber were studied. The results showed that the crystallinity and crystal orientation degree of PET combined filament yarn were increased when the heat godet and heat plate temperatures were elevated. The heat godet temperature had a slight effect on the crystallinity at high heat plate temperatures. The orientation degree of combined filament yarns determined by sonic velocity method bore a complex cerrelation with the heat godet and heat plate temperatures.
【CateGory Index】: TQ340.1
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