抗静电PTT及其纤维的研制

采用精对苯二甲酸(PTA)、1,3-丙二醇(PDO)及抗静电剂直接酯化法合成具有抗静电性能的聚对苯二甲酸-1,3-丙二醇酯(PTT)。对合成的PTT切片固相增粘后进行高速纺丝制得165 dtex/36 f抗静电PTTDTY。结果表明:在聚合反应完成前20 min加入抗静电剂,抗静电剂质量分数控制在1.5%～2.5%,聚合得到的切片经过真空固相增粘至其特性粘数达0.950 dL/g,可得到可纺性好、抗静电性好的PTT。制得的PTTDTY纤维手感好,织物表面电阻率达到10~9～10~(10)Ω。

Development of antistatic PTT and fiber thereof

An antistatic poly(1,3-trimethylene terephthalate)(PTT)was synthesized from purified terephthalic acid(PTA),1,3-propanediol(PDO)and antistatic agent via direct esterification.The antistatic PTI" DTY of 165 dtex/36 f was prepared from the resulted PTI" chip via high-speed spinning process subsequent to solid-state polycondensation.The results showed that thePTT with fairly good spinnability and antistatic behavior can be obtained by adding 1.5%-2.5%antistatic agent by mass fraction at 20 min before the accomplishment of polymerization reaction and exposing to solid-state polycondensation under vacuum till the FIT chip reached the intrinsic viscosity of 0.950 dL/g.The obtained PTT DTY had good handle feeling and the fabric exhibited the surface resistance up to 10~9-10~(10) Ω.