A kind of acrylic monomer is used as comonomer to prepare polycarboxylate superplasticizer method
A high-efficiency water reducer and acrylic technology, applied in chemical instruments and methods, compounds of group 5/15 elements of the periodic table, organic chemistry, etc., to achieve good economic and social benefits, improve concrete application performance, and improve production cost effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0021] Put 70 parts of polyoxyethylene methallyl polyoxyethylene ether (TPEG) with a degree of polymerization of 2400 and 173.5 parts of water into a four-necked flask, stir in a water bath, heat to 55°C, and add 10.1 parts of acrylic acid and 5.04 parts of propylene Sodium sulfonate was dissolved in 23.3 parts of water to make it fully dissolved to prepare a mixed monomer solution. 3.97 parts of ammonium persulfate was dissolved in 52.7 parts of water to prepare a solution with a mass fraction of 7%. 61.7 parts of MPA were added to the four-necked flask every 10min, and the temperature was kept constant for 10min. Then the temperature was raised to 70°C, and the monomer mixed solution and the ammonium persulfate solution were added dropwise for 1.5h respectively, the reaction was performed at a constant temperature for 3h, cooled to 50°C, and 9.7 parts of 40% KOH solution was added to adjust pH=8. A water reducing agent product 1 with a concentration of 40% was prepared.
Embodiment 2
[0023] Put 70 parts of polyoxyethylene methallyl polyoxyethylene ether (TPEG) with a degree of polymerization of 2400 and 82.5 parts of water into a four-necked flask, stir in a water bath, heat to 50° C., add 6.56 parts of p-styrenesulfonic acid Sodium, 22.9 parts of acrylic acid, and 34.26 parts of MPA were dissolved in 100 parts of water to prepare a mixed monomer solution. A 20% solution was made by dissolving 7.23 parts of ammonium persulfate in 28.9 parts of water. Then the temperature was raised to 70°C, the mixed monomer solution and ammonium persulfate solution were added dropwise for 3h, the reaction was constant for 1h, cooled to 45°C, and 8.2 parts of 40% KOH solution was added to adjust pH=8. The water reducing agent product 2 with a concentration of 40% was prepared.
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More