Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Sulfonate system cement grinding aid raw material and preparation method thereof
The invention discloses a sulfonate system cement grinding aid raw material and a preparation method thereof and relates to the field of substitution of the sulfonate system cement grinding aid raw material and preparation of the sulfonate system cement grinding aid raw material. The preparation method of the sulfonate system cement grinding aid raw material includes the following steps that 1, under the alkaline condition, a formaldehyde solution and urea are subjected to an addition reaction, and polyhydroxy methylurea is generated; 2, under the alkaline condition, formaldehyde and sodium dodecyl benzene sulfonate are added to a reaction product of step 1 for conducting a polycondensation reaction, and sulfonate system copolymer UFD is obtained; in step 1 and step 2, the alkaline condition is that an alkaline solution is added, and in the reaction process, the reaction pH is controlled to be 10-12. The UFD sulfonate system copolymer produced through the preparation method of the sulfonate system cement grinding aid raw material has a good assisted-grinding enhancement effect in cement and good in stability, the production cost is lower than that of triethanolamine, the UFD sulfonate system copolymer can partially or totally replace the role of early strength agents played by the triethanolamine in cement grinding aid, and the method is easy and convenient to operate, low in cost, good in safety and high in yield.
Sulfonate system cement grinding aid raw material and preparation method thereof
The invention discloses a sulfonate system cement grinding aid raw material and a preparation method thereof and relates to the field of substitution of the sulfonate system cement grinding aid raw material and preparation of the sulfonate system cement grinding aid raw material. The preparation method of the sulfonate system cement grinding aid raw material includes the following steps that 1, under the alkaline condition, a formaldehyde solution and urea are subjected to an addition reaction, and polyhydroxy methylurea is generated; 2, under the alkaline condition, formaldehyde and sodium dodecyl benzene sulfonate are added to a reaction product of step 1 for conducting a polycondensation reaction, and sulfonate system copolymer UFD is obtained; in step 1 and step 2, the alkaline condition is that an alkaline solution is added, and in the reaction process, the reaction pH is controlled to be 10-12. The UFD sulfonate system copolymer produced through the preparation method of the sulfonate system cement grinding aid raw material has a good assisted-grinding enhancement effect in cement and good in stability, the production cost is lower than that of triethanolamine, the UFD sulfonate system copolymer can partially or totally replace the role of early strength agents played by the triethanolamine in cement grinding aid, and the method is easy and convenient to operate, low in cost, good in safety and high in yield.
Sulfonate system cement grinding aid raw material and preparation method thereof
ZHANG DATONG (Autor:in) / ZHANG DESHI (Autor:in) / PENG LIGANG (Autor:in) / YU JITAO (Autor:in)
16.12.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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