摘要
采用实验室自制的延缓型有机铝交联剂L～1与部分水解聚丙烯酰胺，制备了一种延缓交联型聚丙烯酰胺水基凝胶，并通过扫描电镜对其微观结构进行了研究。结果表明，该交联体系成胶时间在0～96h可控，耐高温（90℃）、抗高盐（p（NaCl）=200g／1），最大成胶强度为225mPa．s。交联剂通过交联反应与聚合物分子之间形成了网络结构、树枝状结构以及层状结构，使体系的结点增多，结构增强。在淡水条件下形成的体系的结构多为网状和树枝状，在高矿化度条件下形成体系的结构多为层状结构。
The delay crosslinked aqueous gel was prepared with self-made crosslinker and HPAM. The structure was characterized by SEM technique. The gel time can be controlled in 0--96 h by changing the addition of crosslinker. The capac tolerance were 90℃ and 200 g/l, respectively. ities of temperature resistance and salt （NaCl） The maximum gel strength was 255 mPa. s. Through the electronic microscope photos, it is clear that crosslinking agent and polymer molecular formed the structure of reticulation, arborization, sandwich, which enhanced the performance of weak gel system.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2009年第1期124-127,共4页
Acta Petrolei Sinica(Petroleum Processing Section)
关键词
延缓交联
水基凝胶
耐温抗盐
扫描电镜
delay crosslink
aqueous gel
temperature resistance and salt tolerance
SEM
