【摘要】 通过SEM观察及对拉伸曲线和弹性回复率等性能的测定,研究了热处理温度和拉伸张力对PTT纤维结构和力学性能的影响。结果表明在120～140℃相对较低的温度进行拉伸处理时,PTT纤维结构容易受到损伤,并导致其抗变形能力和回弹性能下降;而在160℃左右进行适当的拉伸热处理,则有利于形成更完善的内部结构,提高其抗变形能力、强力及回弹性能;在160℃左右对PTT纤维织物进行热定型加工,能最大限度地维持并优化PTT纤维的高回弹性能。更多还原

【Abstract】 The effects of temperature and tension of heat treatments on the structure and mechanical properties of PTT fibers were investigated through SEM observation, and testing of the tensile and the rate of resilient-elasticity recovery. The results of the experiment show that drawing at 120～ 140 ℃ will damage the structure of PTT fibers and result in a drop in deformation resistance and stretch recovery, while proper drawing at the temperature about 160 ℃ will improve the internal structure of PTT fibers and enhance the deformation resistance, strength and stretch recovery. The heat-setting of PTT fabrics at the temperature about 160 ℃ can maintain and optimize high elasticity of PTT fibers.更多还原