钠基蒙脱土交联增稠剂的合成及性能  

Preparation and Properties of Na-Montmorillonite Cross-linked Thickeners

作　　者：刘红宇[1] 刘翠云[1] 吕本莲[1] 罗洁[1] 宋文生[1] 张玉清[1] 

机构地区：[1]河南科技大学高分子科学与纳米技术重点实验室,洛阳471003

出　　处：《应用化学》2008年第9期1061-1064,共4页Chinese Journal of Applied Chemistry

基　　金：河南科技大学人才科研基金(13460011);SRTP(2007054)资助项目

摘　　要：采用钠基蒙脱土为交联剂合成了新型的具有较高抗电解质性能的增稠剂。聚合物链一端或两端接枝于蒙脱土片层上。测试了该复合增稠剂的增稠性能和抗NaCl、NaHCO3的性能。结果表明,钠基蒙脱土交联增稠剂具有优异的抗电解质性能。Bis交联增稠剂5%糊料加入5 mL 2 mol/L NaCl溶液后,黏度由118 Pa.s迅速降低为6 Pa.s,加入8 mL2 mol/L NaCl溶液后,旋转黏度基本为零;而钠基蒙脱土交联增稠剂5%糊料加入5 mL2 mol/L的NaCl溶液前后,旋转黏度分别为63和24 Pa.s,加入8 mL2 mol/L NaCl溶液后,旋转黏度仍保持16.5 Pa.s。A kind of new thickeners with enhanced resistance ability to electrolyte was prepared. Exfoliated inorganic montmorillonite was used as an effective multifunctional cross-linker. In these composites polymer chains were grafted on the clay surface at one or both ends. The rheology of these thickeners in pure water, NaCl or NaHCO3 solution has been studied. Experimental results reveal that these composites show enhanced resistance ability to electrolyte. The viscosity of 5% bis-cross-linked thickener decreased from 118 Pa · s to 6 Pa · s in the presence of 5 mL of 2 mol/L NaCl solution. The viscosity of montmorillonite cross-linked thickener decreased from 63 Pa · s to 24 Pa · s in the presence of 5 mL of 2 mol/L NaCl solution. When the amount of NaCl solution was 8 mL, the viscosity still maintained 16.5 Pa · s.

关 键 词：增稠剂 蒙脱土 丙烯酰胺 反相悬浮聚合 

分 类 号：O631.1[理学—高分子化学]