Abstract:

The hydroxyl hyperbranched polyether was prepared by tetrahydrofuran and glycidyl, and then the hydroxyl was modified by PBTCA to obtain the modified product HBP-P. The effects of the concentration of scale inhibitor, Ca²⁺ concentration and pH on the scale inhibition efficiency under high salt condition were discussed. The results show that HBP-P has excellent scale inhibition performance in high salt circumstances. When the concentration was 20 mg/L, the scale inhibition efficiency reached 99.74%. XRD and SEM results show that HBP-P can change the calcium carbonate crystal from calcite crystal to vaterite crystal, which reduces the degree of crystallinity.

Key words: hyperbranched polyether, scale inhibition, calcium carbonate, crystal distortion, crystalline

摘要：

通过四氢呋喃和缩水甘油阳离子开环聚合制备端羟基超支化聚醚，以2-磷酸基-1，2，4-三羧酸丁烷（PBTCA）对羟基进行改性，得到改性聚醚产物（HBP-P），探讨了在高盐环境中阻垢剂用量、钙离子浓度、pH对HBP-P阻垢率的影响。结果表明，在高盐环境中HBP-P具有优异的阻垢效果，质量浓度为20 mg/L时，阻垢率达到99.74%。X射线衍射（XRD）和扫描电子显微镜（SEM）显示，HBP-P能使碳酸钙晶体发生变化，晶型由方解石晶型变为球霰石晶型，降低结晶度。

关键词: 超支化聚醚, 阻垢, 碳酸钙, 晶体畸变, 晶型

CLC Number: 

• TQ085+.4