【摘要】 利用SEM ,DSC及X射线衍射方法 ,比较了PTT ,PET切片的结构与流变性能。结果表明 :与PET相比 ,PTT的断裂表现为韧性断裂 ,玻璃化温度和熔点较低 ,结晶度高 ,晶粒尺寸大 ,流动活化能小。更多还原

【Abstract】 The structures and rheological behaviors of PTT and PET chips were analyzed and compared by SEM,DSC and X ray diffractometry. The results showed that PTT fiber exhibited ductile fracture,lower glass transition temperature and melting point,higher crystallinity,greater crystal size and lower flow-activation energy,as compared with PET.更多还原