A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of powdery polycarboxylic acid high-performance water reducing agent
The invention provides a powdery polycarboxylic acid high-performance water reducing agent which can be quickly dissolved in water and further provides a polymerization method of the polycarboxylic acid high-performance water reducing agent. The polycarboxylic acid high-performance water reducing agent is obtained through free-radical bulk polymerization of small monomers and unsaturated polyoxyethylene ether in the absence of any solvent, the polymerization technology is simple, the gel effect which can occur during bulk polymerization production can be effectively avoided through polymerization technology design, and the method has the characteristics of controllable production process and stable product performance. Besides, the invention further provides a method for preparing powder, which can be quickly dissolved in water, from polymerization products. The powdery polycarboxylic acid high-performance water reducing agent prepared with the method has cement paste fluidity, retention capacity and concrete application performance similar to those of common liquid polycarboxylic acid water reducing agents, has the characteristic of capability of being quickly dissolved, can be widely applied to the concrete and mortar fields and contains no solvent, and the transportation cost is saved.
Preparation method of powdery polycarboxylic acid high-performance water reducing agent
The invention provides a powdery polycarboxylic acid high-performance water reducing agent which can be quickly dissolved in water and further provides a polymerization method of the polycarboxylic acid high-performance water reducing agent. The polycarboxylic acid high-performance water reducing agent is obtained through free-radical bulk polymerization of small monomers and unsaturated polyoxyethylene ether in the absence of any solvent, the polymerization technology is simple, the gel effect which can occur during bulk polymerization production can be effectively avoided through polymerization technology design, and the method has the characteristics of controllable production process and stable product performance. Besides, the invention further provides a method for preparing powder, which can be quickly dissolved in water, from polymerization products. The powdery polycarboxylic acid high-performance water reducing agent prepared with the method has cement paste fluidity, retention capacity and concrete application performance similar to those of common liquid polycarboxylic acid water reducing agents, has the characteristic of capability of being quickly dissolved, can be widely applied to the concrete and mortar fields and contains no solvent, and the transportation cost is saved.
Preparation method of powdery polycarboxylic acid high-performance water reducing agent
WANG WANJIN (author) / ANG YUAN (author) / HE KUI (author) / LIU JUNYUAN (author) / JIA FANGFANG (author) / WANG JING (author) / DONG QUANXIAO (author) / KONG TAO (author) / LI XIAOFEI (author) / ZHANG QIAOLI (author)
2015-11-18
Patent
Electronic Resource
English
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