文献类型：期刊文献

英文题名：Rheology and rheokinetics of triethanolamine modified carboxymethyl hydroxyethyl cellulose

作者：Sun, Rui[1];Fang, Bo[1];Lu, Yongjun[2];Qiu, Xiaohui[2];Du, Wei[1]

机构：[1]East China Univ Sci & Technol, Lab Chem Engn Rheol, Res Ctr Chem Engn, Shanghai Key Lab Multiphase Mat Chem Engn, Shanghai, Peoples R China;[2]Petro China, Langfang Filial Res Inst Petr Explorat & Dev, Langfang, Peoples R China

年份：2018

卷号：39

期号：7

起止页码：923

外文期刊名：JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY

收录：;EI(收录号：20181304959851);WOS:【SCI-EXPANDED(收录号:WOS:000433545600001)】；

语种：英文

外文关键词：Cellulose; crosslinking process; modification; rheokinetics

摘要：To meet requirements of fracturing fluid thickener, triethanolamine was used to modify carboxymethyl hydroxyethyl cellulose (CMHEC) to obtain product called T-CMHEC of high viscosity. Rheological properties of CMHEC and T-CMHEC solutions were investigated to compare its structure and rheological performance, including viscosity, flow curve, thixotropy, and viscoelasticity. Viscosities of CMHEC and T-CMHEC solutions are, respectively, 19.0 and 63.2mPas for the same concentration of 0.3%. Viscosity of T-CMHEC solutions is 3.3 times of CMHEC ones. Besides, the thixotropy and viscoelasticity of T-CMHEC system are both getting stronger than before. In summary, the T-CMHEC system shows better rheological performance after modification. Crosslinking process of T-CMHEC system is investigated under steady shear under different conditions, containing shear rates, concentrations of crosslinking agent, concentrations of pH adjuster, and temperature. Viscosity curves changing with time are obtained during crosslinking process. Four-parameter crosslinking rheokinetics equation is suitable to fit the viscosity curves under different conditions. Study on crosslinking process of T-CMHEC solutions is helpful to deepen the understanding on gel formation, and provides a theoretical basis for its application.