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通过粘度测定方法，研究了部分水解聚丙烯酰胺（ＨＰＡＭ）／ 柠檬酸铝（ＡｌＣｉｔ） 交联过程中粘度变化的特性．聚合物浓度高的ＨＰＡＭ／ＡｌＣｉｔ 体系粘度随反应时间的延长而上升，其体系粘度最终高于相同聚合物浓度的ＨＰＡＭ 溶液粘度．聚合物浓度低的ＨＰＡＭ／ＡｌＣｉｔ 体系粘度随反应时间的延长而下降，其体系粘度低于相同聚合物浓度的ＨＰＡＭ 溶液粘度．ＨＰＡＭ／ＡｌＣｉｔ 交联体系的聚合物浓度低于临界浓度时，交联反应后形成稀胶态分散凝胶（ＴＣＤＧ） ．在实验条件下，临界浓度在１５０ ～３００ｍｇ／Ｌ 之间．当聚合物浓度于临界浓度和７００ｍｇ／Ｌ之间时，形成浓胶态分散凝胶（ＣＣＤＧ） ；当聚合物浓度高于７００ｍｇ／Ｌ 时，ＨＰＡＭ／ＡｌＣｉｔ 交联体系形成整体凝胶．
The viscosity of partially hydrolyzed polyacrylamide (HPAM) / aluminum citrate (AlCit) was investigated by viscosity measurement. The viscosity of HPAM / AlCit system with high polymer concentration increased with the increase of reaction time, and the viscosity of HPAM / AlCit system finally reached higher viscosity than HPAM solution with the same polymer concentration. The viscosity of HPAM / AlCit system with low polymer concentration decreased with the reaction time, and the viscosity of the system was lower than that of HPAM solution with the same polymer concentration. HPAM / AlCit cross-linked polymer system concentration below the critical concentration, the crosslinking reaction to form a dilute colloidal dispersion gel (TCDG). Under experimental conditions, the critical concentration of 150 ~ 300mg / L between. When the concentration of polymer is between the critical concentration and 700mg / L, a concentrated colloidal dispersion gel (CCDG) is formed. When the polymer concentration is higher than 700mg / L, the HPAM / AlCit crosslinked system forms a unitary gel.