低分子质量PDMDAAC粘土稳定剂的合成  

Synthesis of Low Molecular Weight PDMDAAC Clay Stabilizer

作　　者：宫本敬[1] 李柏林[1] 刘志娟[1] 

机构地区：[1]大庆石油学院化学化工学院,黑龙江大庆163318

出　　处：《辽宁化工》2009年第4期229-232,共4页Liaoning Chemical Industry

摘　　要：在低温、低浓度的条件下,以甲酸钠为链转移剂,在氧化还原引发体系中采用水溶液聚合方法合成了分子质量在1000～6000的PDMDAAC。通过单因素研究方法,考察了单体质量浓度、聚合温度、引发剂用量、还原剂用量、链转移剂用量对聚合物特性粘数和单体转化率的影响。评价了不同质量分数下PDMDAAC的防膨率,并将PDMDAAC与无机粘土防膨剂KCl复配后进行评价比较,防膨率高达到96%。PDMDAAC was synthesized at the low temperature and low concentration, with water as solvent, oxidation reduction system as initiator and sodium formate as chain -transfer agent. Its molecular weight was about 1 000 - 6 000. The factors such as monomer＇s concentration, polymerizafing temperature, initiator＇s dosage, reducing agent＇s dosage, chain -transfer agent＇s dosage influencing on the intrinsic viscosity and monomer conversion of PDMDAAC were investigated via single factor method. Swell- ing prevention ratios of PDMDAAC under different mass fractions were measured and compared with the combination of PDM- DAAC and KC1. Swelling prevention ratio of mixture may achieve 96%.

关 键 词：低分子质量 PDMDAAC 链转移剂 粘土稳定剂 

分 类 号：TE258.3[石油与天然气工程—油气井工程]