Effect of surface treatment on rheological behaviors of glass bead/hydroxyl terminated polybutadiene suspensions
Surface treatment of glass bead (GB) was carried out by using γ-glycidoxypropyitrimethoxy silane (GPTES) and γ-methacryloxypropyltrimethoxy silane (MPTMS) as coupling agents, respectively. The steady viscosity and yield stress of the GB/hydroxyl terminated polybutadiene (HTPB) suspensions were determined by Brookfield R/S rheometer. The effect of surface treatment on the viscosity and yield stress of GB/HTPB suspension was investigated. The results indicate that the viscosity of the pristine GB/HTPB suspension increases with increasing GB, and the relationship between its viscosity and volume fraction of GB depends on the shear rate. The modification of GB by MPTMS changes the viscosity of the MPTMS@GB/HTPB suspension, and its viscosity is the minimum at the MPTMS dosage of 0.3 g per 1 g GB. Additionally, the modification of GB by MPTMS increases the yield stress of the GB/HTPB suspension, and its yield stress is the maximum at the MPTMS dosage of 0.1 g per 1 g GB. The GPTES modified GB/HTPB suspension behaves lower viscosity and weaker shear thinning than the MPTMS modified GB/HTPB suspension within the range of experimental shear rate.
glass bead suspensions coupling agent steady shear viscosity yield stress
CUI Wei(崔伟) ZHAO Jin-chao(赵瑾朝) WANG Cheng-zhe(王承哲) ZHOU Xing-ping(周兴平) XIE Xiao-lin(解孝林)
School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology,Wuhan 430074, China; Hubei Key Laboratory of Materials Chemistry and Service Failure, Huazhong University of Science and Technology,Wuhan 430074, China
国际会议
长沙
英文
158-162
2008-09-28（万方平台首次上网日期，不代表论文的发表时间）