文章摘要
油酸酰胺丙基二甲基叔胺改性黄原胶溶液流变特性
Rheological Properties of Oleamidopropyl Dimethylamine Modified Xanthan Gum Solution
投稿时间:2018-06-13  修订日期:2018-06-13
DOI:
中文关键词: 黄原胶  长链疏水两性黄原胶  流变性  耐温耐剪切性  破胶性
英文关键词: xanthan gum  long-chain hydrophobic amphiphilic xanthan gum  rheological property  temperature and shear resistance  gel-breaking
基金项目:国家科技重大专项课题“储层改造关键流体研发”(项目编号2017ZX05023003)。
作者单位E-mail
蓝程程 华东理工大学化工学院流变学研究室 371780846@qq.com 
方 波 华东理工大学化工学院流变学研究室 fangbo@ecust.edu.cn 
   
摘要点击次数: 52
全文下载次数: 
中文摘要:
      为改善黄原胶的流变性能,采用油酸酰胺丙基二甲基叔胺与环氧氯丙烷合成长链疏水阳离子醚化试剂,以此阳离子醚化试剂对黄原胶(XG)进行改性制得高黏度的长链疏水两性黄原胶(OD-XG)。研究并比较了OD-XG和XG溶液的流变特性,包括稳态黏度、流动曲线、触变性及黏弹性,并进一步研究了其耐温耐剪切性和破胶性能。结果表明,OD-XG溶液的黏度较XG显著增加,0.6% (wt%) OD-XG溶液的黏度(237.97mPa.s)比XG溶液黏度(74.12 mPa.s)增大了221%;XG和OD-XG溶液的流动曲线可用非线性共转Jefferys本构方程描述; OD-XG溶液的黏弹性及触变性较XG溶液均显著提高; OD-XG溶液的耐温性能提高,80℃恒温剪切90min后,0.4% OD-XG的保留黏度(70.10 mPa.s)为0.4%XG保留黏度 (35.14 mPa.s) 的2倍。破胶过程流变性研究表明,加入破胶剂后OD-XG溶液破胶情况良好。
英文摘要:
      In order to improve rheological properties of xanthan gum solutions, long-chain hydrophobic amphoteric xanthan gum (OD-XG) was synthesized by xanthan gum (XG) and hydrophobic cationic etherification reagent that was synthesized by oleamidopropyl dimethylamine and epichlorohydrin. The rheological properties of OD-XG and XG solutions were studied and compared, including the steady viscosity, flow curve, thixotropy, and viscoelasticity, as well as the temperature resistance and the gel-breaking performance. The results showed that the viscosity of OD-XG solution was significantly higher than that of XG, and the viscosity of 0.6%(wt%) OD-XG solution (237.97 mPa.s) was increased by 221% compared to the viscosity of 0.6%(wt%) XG solution (74.12 mPa.s). The flow curve of OD-XG and XG solution could be fitted by nonlinear co-rotation Jefferys model. The viscoelasticity and thixotropy of OD-XG solution were significantly higher than those of XG solution, and the temperature resistance of OD-XG solution was improved. The reserved viscosity of 0.4% OD-XG(70.102 mPa.s) was twice times that of 0.4% XG (35.135 mPa.s). The rheological study of gel breaking process showed that, after adding the breaker the gel breaking was completed well.
  查看/发表评论  下载PDF阅读器
关闭
点击这里给我发消息

点击这里给我发消息