摘要
采用毛细管流变仪研究了含二氧化钛(TiO2)的聚对苯二甲酸乙二醇酯(PET)的流变性能,计算得到非牛顿指数(n)和粘流活化能(Eη)。结果表明:含TiO2的PET所能达到的最高剪切速率高于纯PET,其剪切粘度、纺丝温度及纺丝速度均高于纯PET;在280,285,290℃时,含TiO2的PET的n小于纯PET,295℃时,大于纯PET;含质量分数0.32%TiO2的PET的Eη与纯PET相当,含质量分数2.50%TiO2的PET的Eη远低于纯PET。
The rheological behavior of polyethylene terephthalate （PET） containing titanium dioxide （TiI2） was studied with a capillary rheometer. The non-Newtonian index （ n ） and viscous flow activation energy （ △Eη ） were calculated. The results showed that as compared with pure PET, PET containing TiO2 had the higher maximum shearing rate and sheafing viscosity and required higher spinning temperature and velocity. The n of PET containing TiO2 was lower at 280, 285, 290 ℃ , but higher at 295 ℃ than that of pure PET. The PET containing 0.32% TiO2 by mass fraction had the equal △Eη to pure PET. The PET containing 2.50% TiO2 by mass fraction had the △Eη substantially lower than pure PET.
出处
《合成纤维工业》
CAS
CSCD
北大核心
2010年第3期42-44,共3页
China Synthetic Fiber Industry
关键词
聚对苯二甲酸乙二醇酯
二氧化钛
流变性能
粘流活化能
polyethylene terephthalate
titanium dioxide
rheological behavior
viscous flow activation energy
