The Effect of Carboxymethylcellulose and Xanthan on the Rheology of Bentonite Suspensions
The Effect of Carboxymethylcellulose and Xanthan on the Rheology of Bentonite Suspensions
复制标题
DOI：
10.1080/15567030902842244
复制
发表时间：
2010-01-01
影响因子：
2.9
通讯作者：
Benchabane, A.
中科院分区：
文献类型：
--
作者：
Benyounes, K.;Mellak, A.;Benchabane, A.
本文研究了不同浓度的膨润土悬浮液在添加和不添加阴离子聚合物时的流变性能。所用粘土是来自Maghnia（阿尔及利亚西部）的钻井膨润土，添加剂是羧甲基纤维素钠和黄原胶。实验流动测量，通过控制应力流变仪获得的，被用来突出的效果的添加剂上的膨润土悬浮液的流变性能。使用Herschel-Bulkley和Ostwald模型来拟合流变图。已经表明，羧甲基纤维素在膨润土悬浮液中的存在有助于去除屈服应力并增加混合物的粘度。另一方面，黄原胶诱导的屈服应力的增加和高的增加的粘度的膨润土-聚合物混合物。
In this article, the rheological properties of bentonite suspensions at different concentrations, with and without anionic polymer additives, are investigated. The clay used is a drilling bentonite from Maghnia (west of Algeria) and the additives are sodium carboxymethylcellulose and xanthan gum. Experimental flow measurements, obtained by a controlled-stress rheometer, were used to highlight the effect of the additives on the rheological properties of the bentonite suspension. The Herschel-Bulkley and the Ostwald models were used to fit the rheograms. It has been shown that the presence of carboxymethylcellulose in the bentonite suspension has helped to remove the yield stress and to increase the viscosity of the mixture. On the other hand, the xanthan induced an increase in the yield stress and a high increase in viscosity of the bentonite-polymer mixtures.