本文合成了五种改性三乙醇胺化合物,即三乙醇胺硫酸酯(GA_1)、三乙醇胺乙酸酯(GA_2)、三乙醇胺马来酸酯(GA_3)、马来酸三乙醇胺盐(GA_4)和油酸三乙醇胺盐(GA_5).以三乙醇胺为参比项,在不同添加量下,各化合物与水泥熟料和石膏在闭路磨机内粉磨一定的时间,通过分析粉体的比表面积(SSA)、粒径分布、中值粒径(D_(50)) 、均匀性系数(n)和强度,探讨了改性后的三乙醇胺会对水泥助磨效果产生的影响,并分析了作用机理.结果表明,改性三乙醇胺的助磨效果优于三乙醇胺,其中马来酸三乙醇胺盐的助磨增强效果最佳.
The aim of the present paper was the evaluation of five additives from modified triethanolamine, which were synthesized at a laboratory stage used for Portland cement. To get a valuable result, a reference sample was made with triethanolamine. These compounds were carried out by interground with gypsum and clinker in closed-circuit grinding systems for different concentration and grinding duration. The investigation were performed using the specific surface of the solid, size distribution,D_(50) ,uniformity factor "n" and strength. Then, the action mechanisms were discussed. The result showed that at low concentration additives from modified triethanolamine class had substantial grinding advantage in comminution vs. triethanolamine, and the effect of triethanolamine maleate on cement grindability and strength development is the best.
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