部分水解聚丙烯酰胺(下称HPAM)可由聚丙烯酰胺(下称PAM)经水解来制取,其反应式如下:■从 HPAM 的分子结构中可以看到,HPAM 实际上是丙烯酰胺和丙烯酸的共聚物,在分子结构上说可能与 PAM 经碱水解得到的 HPAM 略有不同,但其溶液的基本特性应是相似的。HPAM 由于其独特性能而获得了广泛的应用,尤其在石油开采上,钻井泥浆,注入水增稠,油井选择性堵水,压裂液等已大量使用,而且因其效果良好和我国石油工业的迅速发展而更具广阔的应用前景,HPAM 在一定条件下具有的聚电解质行为,使其 Partially hydrolyzed polyacrylamide (hereinafter referred to as HPAM) can be prepared from polyacrylamide (hereinafter referred to as PAM) by hydrolysis. The reaction formula is as follows: ■ It can be seen from the molecular structure of HPAM that HPAM is actually acrylamide and acrylic Copolymers, which are slightly different in molecular structure from those of PAM obtained by alkaline hydrolysis of PAM, but the basic characteristics of the solution should be similar. HPAM has been widely used due to its unique properties, especially in the exploitation of oil, drilling mud, injection of water thickening, selective well water shutoff, fracturing fluid has been widely used, and because of its good effect and China’s oil industry Rapid development and more broad application prospects, HPAM polyelectrolyte behavior under certain conditions, so that