在激光辐照下拉伸的聚对苯二甲酸乙二酯纤维的结构与性能  

STRUCTURE AND PROPERTIES OF POLY(ETHYLENE TEREPHTHALATE) FIBER DRAWN UNDER LASER RADIATION

作　　者：李元杰[1] 李鑫[2] 宋青[2] 吴立衡[2] 吴大诚[1] 

机构地区：[1]四川大学纺织研究所,成都610065 [2]中国纺织科学研究院,北京100025

出　　处：《高分子学报》2003年第2期309-311,共3页Acta Polymerica Sinica

基　　金：国家自然科学重点基金资助项目 (基金号 1983 2 0 5 0 )

摘　　要：The effect of heating modes in drawing process on the structure and properties of PET fibers was investigated. Sample B was prepared by drawing amorphous as\|spun PET filaments under laser radiation. A CO\-2 laser (λ=10.6?μm, 30 W) was used for this purpose, and the diameter of its radiation area was about 3 mm. The feeding speed of the filaments was 50 m/min, and the draw ratio was 5\^0. Sample A was prepared under the same conditions except the heating mode, the filaments were heated by hot rolls. Some difference in structure and mechanical properties were found for the two samples.Sample B exhibited high tenacity (0\^8 GPa),elongation(9\^2%) and toughness (0\^047 GPa).The latter was about 1\^8 times as high as that of sample A.Both of the samples were obviously oriented.WAXD and density measurements showed the crystallinity and the crystallite size of sample B were larger than those of the sample A.The effect of heating modes in drawing process on the structure and properties of PET fibers was investigated. Sample B was prepared by drawing amorphous as-spun PET filaments under laser radiation. A CO, laser (lambda = 10.6 mum, 30 W) was used for this purpose, and the diameter of its radiation area was about 3 mm. The feeding speed of the filaments was 50 m/min, and the draw ratio was 5.0. Sample A was prepared under the same conditions except the heating mode, the filaments were heated by hot rolls. Some difference in structure and mechanical properties were found for the two samples. Sample B exhibited high tenacity (0.8 GPa) elongation (9.2%) and toughness (0.047 GPa). The latter was about 1.8 times as high as that of sample A. Both of the samples were obviously oriented. WAXD and density measurements showed the crystallinity and the crystallite size of sample B were larger than those of the sample A.

关 键 词：激光辐照 聚对苯二甲酸乙二酯 纤维 结构 力学性能 分子链 C02 

分 类 号：TQ342[化学工程—化纤工业]