摘要
Using brighten white and modified PET chips, fine denier hollow fibres (dpf=0.5～1.5) were prepared on a Fuji Filter MSTC-400 and VC-443A drawn machine, whose structure and properties were tested by X-ray diffraction mater, SOM-II sonic velocity meter and Instron-1122 Tensile tester, electron and light microscopy etc,. The results show: fine denier hollow taken-up yarns prepared at low spinning velocity have radial orientation, higher strength and elongation at rupture because radial stress is higher than normal stress. Fine denier hollow drawn yarns with hollow degree up to 18～35％ and high tenacity, together with high crystalline degree and small crystal and amorphous domains, can be empolyed as products.
Using brighten white and modified PET chips, fine denier hollow fibres (dpf=0.5~ 1.5) were prepared on a Fuji Filter MSTC-400 and VC-443A drawn machine, whose structure and proper-tics were tested by X-ray diffraction meter, SOM-II sonic velocity meter and Instron-1122 Tensile tester, electron and light microscopy etc. The results show: fine denier hollow taken-up yarns prepared at low spinning velocity have radial orientation, higher strength and elongation at rupture because radial stress is higher than normal stress. Fine denier hollow drawn yarns with hollow degree up to 18~ 35% and high tenacity , together with high crystalline degree and small crystal and amorphous domains, can be empolyed as products.
