Rheological properties of salt-tolerant HPAM solutions with ultrahigh molecular weight

摘要：

The rheological properties of salt-tolerant partially hydrolyzed polyacrylamide (HPAM)solutions with molecular of 2.5×107 g/mol at different concentrations were measured in steady-state shear flow mode by Haake Rheostress 150 rheometer. Three constitutive equations (Oldroyd four constant model, Guesekus model and FENE-P model) were used for describing the apparent viscosity and first normal stress difference. The apparent viscosity of salt-tolerant HPAM solutions appears a first Newtonian zone when the shear rate is approximately lower than 0.2 s-1. At high shear rate, the HPAM solutions show shear-thinning and elasticity.The results show that the FENE-P model has the best agreement between theoretical and experimental data within the available shear rate range. The material parameters are useful for numerical analysis of polymer solution flow fields.

关键词： salt-tolerant partially hydrolyzed polyacrylamide steady-state flow shear thinning FENE-P model

作者: ZHANG Min-ge(张敏革) ZHANG L(u)-hong(张吕鸿) JIANG Bin(姜斌) LI Xin-gang(李鑫钢)

作者单位: School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; National E

会议类型: 国际会议

会议名称: 第九届全国流变学学术会议

会议地点: 长沙

会议语种:英文

页码: 93-97

在线出版日期: 2008-09-28（万方平台首次上网日期，不代表论文的发表时间）