Cement grinding aid and preparation method thereof

The invention relates to the technical field of cement additives, in particular to a cement grinding aid and a preparation method thereof. The cement grinding aid comprises an amide compound and a polyol compound. The preparation method includes: mixing and stirring diethanol amine and acrylate derivatives to perform ester aminolysis reaction so as to obtain the cement grinding aid. The cement grinding aid is capable of satisfying the standard requirements of the cement grinding aids, excellent in grinding aiding effect and quality stability, capable of increasing compressive strength and capable of being used along with an existing cement grinding aid to improve the quality stability of the existing cement grinding aid and increase the grinding aiding effect. 本发明涉及水泥外加剂技术领域，尤其是涉及种水泥助磨剂及其制备方法。所述水泥助磨剂，包括酰胺化合物和多元醇化合物。所述制备方法包括将二乙醇胺与丙烯酸酯衍生物混合搅拌，进行酯的胺解反应，即得所述水泥助磨剂。本发明所述的水泥助磨剂满足助磨剂标准要求，且具有优异的助磨效果和质量稳定性，能够提高抗压强度。并且，本发明制备得到的水泥助磨剂可与现有的水泥助磨剂进行叠加，改善现有产品的质量稳定性，提高助磨效果。