抗静电异形竹节再生涤纶DTY的制备及性能研究

以167 dtex/48 f化学法再生五波浪一字型截面抗静电涤纶半预取向丝(MOY)为原料,在后加工设备假捻变形机上,利用自主研发的特殊异拉伸装置,制备111 dtex/48 f抗静电异形竹节再生涤纶假捻变形丝(DTY);探讨了抗静电异形竹节再生涤纶DTY的加工工艺条件,并对MOY和DTY的形态结构和性能进行了表征.结...

Preparation and properties of antistatic profiled slub regenerated polyester DTY

A 111 dtex/48 f antistatic profiled slub regenerated polyester draw textured yarn(DTY)was prepared by using 167 dtex/48 f chemically regenerated five-wave straight-line cross-section antistatic polyester semi-preoriented yarn(MOY)as raw material on a post-processing equipment of draw texturing machine.The processing conditions of antistatic profiled slub regenerated polyester DTY were discussed,and the morphology and properties of MOY and DTY were characterized.The results showed that a special profile drawing device was installed between the zero roller and the first roller of the draw texturing machine,which was controlled by a programmable controller to realize the non-uniform drawing of MOY;MOY with an elongation at break of 150%-170% had good post-processing properties and provided the good slub effect of DTY;the MOY showed fairly good spinnability and the prepared DTY exhibited slubby longitudinal appearance,the birefringence of the thick and thin sections of 0.20 and 0.23,respectively,the breaking strength of 2.86 cN/dtex and the elongation at break of 39.45% when the MOY with a breaking strength of 1.87 cN/dtex and elongation at break of 163.50% was used as the raw material and the process conditions were as followed:texturing speed 648-781 m/min,draw ratio of 1.50-1.60 between zero roller and the first roller and 1.05 between the first roller and the second roller,profile drawing hot roller temperature 150℃,the first heating box temperature 138℃,the second heating box temperature 120℃,interlacing nozzle diameter 1.8 mm,interlacing air pressure 0.15-0.20 MPa;the color of DTY was different after hosiery dyeing,i.e.the color of the thick section was dark when the color of the thin section was light;and the volume specific resistance of the prepared DTY was 3.9×10¹¹Ω·cm,indicating a good antistatic property which basically remained unchanged during the post-processing process.