Patent ID: 11905352
Assignee: SHANDONG UNIVERSITY
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  E | IPC C  E

Claim 1:
2. A preparation method of an expansive polymer grouting material for treating high-pressure large-flow-rate karst water inrush, wherein in the preparation method according to claim 1, when a precursor is prepared in step (1), firstly, acrylic acid is incompletely neutralized with lye to obtain an incompletely neutralized solution containing acrylic acid, then the incompletely neutralized solution and a crosslinking agent are mixed and subjected to a polymerization reaction with a polymer water-absorbent resin comonomer to obtain the precursor, and the subsequent steps are the same as steps (2)-(4) in the preparation method according to claim 1.