Views: 1 Author: Site Editor Publish Time: 2023-05-23 Origin: Site
Aliphatic superplasticizer is a very widely used concrete admixture, which is beneficial to the preparation of high fluidity concrete, self-leveling concrete, self-compacting concrete and clear faced concrete. Presumably we all want to know, aliphatic water reducer is how to prepare, below, Xiaobian to introduce to you.
Preparation process of aliphatic water reducing agent:
1. The preparation of aliphatic water reducing agent requires instruments. Generally, it is necessary to have a jacked heating device, a temperature control device, a stirrer, a metering pump and a glass polymerization kettle with a high purity nitrogen device.
2, also need to have some raw materials and instruments: (methyl) acrylic acid, acrylamide, ammonium persulfate, sodium methyl allyl sulfonate, methoxy polyethylene glycol acrylate, regulator, ammonia, sodium hydroxide. The main instruments are: polymerization stirring kettle, micro sampling pump, metering pump, nitrogen purification device.
3, is the use of raw materials and instruments to begin preparation. That is, a certain amount of deionized water is added and heated to the polymerization temperature under stirring condition. After the temperature is stable, a solution of a certain concentration composed of polyether unsaturated monomer, (methyl) acrylic acid, functional monomer, ammonium persulfate and regulator is slowly added to the reactor within a certain period of time. After the drip is finished, the temperature is kept warm for a certain period of time, and the temperature is lowered to 30℃ ~ 40℃. Ammonia or 30% sodium hydroxide to adjust PH, cooling discharge.
After the above steps, aliphatic water reducing agent is prepared. I believe that through the above introduction, we have the corresponding understanding. If there are still questions, please continue to pay attention to us.