Influence of reverse pressure on the shear viscosity of hydrophilic poly(ethylene terephthalate) melt

被引：3
|
作者：
Guo, Zeng-ge [1 ,2 ]
Li, Xin [2 ]
Li, Jian [2 ]
Zhang, Bin [1 ,2 ]
Cheng, Bo-wen [1 ]
机构：
[1] Tianjin Polytech Univ, State Key Lab Hollow Fiber Membrane Mat & Proc, Tianjin 300387, Peoples R China
[2] China Textile Acad, State Key Lab Biobased Fiber Manufacture Technol, Beijing 100080, Peoples R China
来源：
CHINESE JOURNAL OF POLYMER SCIENCE | 2014年 / 32卷 / 07期
关键词：
Hydrophilic PET; Shear viscosity; Pressure; Temperature; Shear rate; Pressure coefficients; POLYMER MELTS; CAPILLARY RHEOMETRY; DEPENDENT VISCOSITY; FLOW; RHEOLOGY; POLYETHYLENE; POLYSTYRENE; FLUIDS; PVT; DIE;
D O I：
10.1007/s10118-014-1482-1
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The effect of reverse pressure.on rheological behavior has been studied. The apparatus is a capillary rheometer with counter pressure chamber being held at a high reverse pressure by means of a cock. The results show that with the increase in temperature, the shear viscosity of hydrophilic PET is reduced. It is different that the effect of temperature on shear viscosity is varied under the condition of all shear rates or all pressures, and the effect is more prominent at 50 MPa or at 216 s(-1). At the same time, the pressure coefficients decrease with increasing the shear rate and the temperature and tend to reach a constant value nearly at the temperature of 290 A degrees C.
引用
收藏
页码：923 / 930
页数：8
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