Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for synthesizing cement disperser from acrylamide-fatty acid vinyl ester graft copolymer
The invention relates to a method for synthesizing cement disperser from an acrylamide-fatty acid vinyl ester graft copolymer. The method comprises the following steps: taking acrylamide and fatty acid vinyl ester as main reaction raw materials, and compounding a cement disperser by using the acrylamide-fatty acid vinyl ester graft copolymer prepared from a method of polymerizing, grafting, alcoholysis reacting and hydrolyzing, namely taking the acrylamide as a reaction monomer, polymerizing under the effect of an initiator and a molecular weight modifier, and grafting and polymerizing with the fatty acid vinyl ester to obtain a grafting copolymer, and performing alcoholysis reaction and hydrolyzation on the grafting copolymer to obtain the cement disperser in a structure with the main chain of polyacrylic acid and side chain of polyvinyl alcohol. The preparation method is simple in process, easy to control and low in cost. The fatty acid vinyl ester is adopted to substitute the current important compound materials of the cement disperser, namely ethylene oxide and propylene epoxide. The prepared cement disperser has excellent cement paste mobility and holding capacity and shows good cement adaptability and concrete application performance.
Method for synthesizing cement disperser from acrylamide-fatty acid vinyl ester graft copolymer
The invention relates to a method for synthesizing cement disperser from an acrylamide-fatty acid vinyl ester graft copolymer. The method comprises the following steps: taking acrylamide and fatty acid vinyl ester as main reaction raw materials, and compounding a cement disperser by using the acrylamide-fatty acid vinyl ester graft copolymer prepared from a method of polymerizing, grafting, alcoholysis reacting and hydrolyzing, namely taking the acrylamide as a reaction monomer, polymerizing under the effect of an initiator and a molecular weight modifier, and grafting and polymerizing with the fatty acid vinyl ester to obtain a grafting copolymer, and performing alcoholysis reaction and hydrolyzation on the grafting copolymer to obtain the cement disperser in a structure with the main chain of polyacrylic acid and side chain of polyvinyl alcohol. The preparation method is simple in process, easy to control and low in cost. The fatty acid vinyl ester is adopted to substitute the current important compound materials of the cement disperser, namely ethylene oxide and propylene epoxide. The prepared cement disperser has excellent cement paste mobility and holding capacity and shows good cement adaptability and concrete application performance.
Method for synthesizing cement disperser from acrylamide-fatty acid vinyl ester graft copolymer
LIU XIAO (Autor:in) / ZHAO MING (Autor:in) / WANG ZIMING (Autor:in) / YIN DONGJIE (Autor:in) / LIU WEI (Autor:in) / SHEN HEQING (Autor:in)
20.05.2015
Patent
Elektronische Ressource
Englisch
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