一种多功能改性聚羧酸减水剂的制备工艺及其水泥基材料
By introducing hydrophobic side chains into the main chain of polycarboxylate superplasticizer and using ester group inversion to achieve dynamic conversion, the problem of poor compatibility between superplasticizer and hydrophobic agent is solved, and the fluidity and durability of marine cement are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- UNIV OF JINAN
- Filing Date
- 2026-03-26
- Publication Date
- 2026-07-17
AI Technical Summary
Existing water-reducing agents and hydrophobic agents have poor compatibility in marine cement, affecting the fluidity and durability of cement materials. Furthermore, traditional shrinkage-reducing agents affect cement hydration and strength.
A multifunctional modified polycarboxylate superplasticizer is used. By introducing hydrophobic side chains into the main chain of the polycarboxylate superplasticizer and achieving dynamic conversion through ester group inversion, the early water reduction effect and the later hydrophobic protection are ensured, avoiding the mutual restriction between traditional water-reducing agents and hydrophobic agents.
The system intelligently switches roles at different stages to maintain the good fluidity and strength of cement-based materials, while constructing a durable hydrophobic system to improve the crack resistance and impermeability of cement materials.
Smart Images
Figure CN121914344B_ABST
Abstract
Citation Information
Patent Citations
High-adaptability ester-based modified polycarboxylate superplasticizer as well as preparation and use methods thereof
CN109679034A
Side chain macromonomer, preparation method thereof and low-sensitivity high-adaptability polycarboxylate superplasticizer prepared by using side chain macromonomer
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