| abstract |
The invention discloses a polymer and a preparation method and an application thereof. The polymer comprises a structural unit as shown in formula I. The polymer can be used as a concrete water reducing agent to improve slump loss prevention, shrinkage cracking resistance, early strength performance and air entraining performance of the water reducing agent. In addition, the polymer can also be used as a cement grinding aid to improve cement grinding efficiency, reduce grinding energy consumption, and improve performance of cement particle size and strength, and the like. |