改性三乙醇胺高分子助磨剂对水泥水化的影响研究  

Effects of Modified Triethanolamine Polymer Grinding Aids on Composite Cement Hydration Process

作　　者：彭康[1] 黄从运[1] 杜颖[2] 甄风磊 

机构地区：[1]武汉理工大学材料科学与工程学院,武汉430070 [2]吉林省建筑材料设计研究院,长春130062

出　　处：《硅酸盐通报》2016年第12期4201-4206,共6页Bulletin of the Chinese Ceramic Society

摘　　要：本文通过酯化反应合成了马来酸三乙醇胺酯(MT),并以合成的马来酸三乙醇胺酯为单体,与甲基丙烯酸和马来酸酐通过水溶液聚合,制备分散性好的高分子助磨剂(PMA)。以三乙醇胺(TEA)作为对比,研究了不同掺量下PMA对不同龄期水泥强度的影响,借助于XRD、SEM、FTIR、TG-DSC等测试手段对水泥的水化程度和水化产物的微观结构进行分析。结果表明:PMA助磨剂能够促进C_3A和C_3S的水化,提高C-S-H凝胶的聚合度,从而提高水泥水化产物质量,改善水泥水化产物的结构。Maleic acid triethanolamine ester（MT） was prepared by esterifieation firstly. A novel modified Alkamines polymer grinding aids （PMA）was prepared with Maleie acid （MA）, methyl acrylic and the synthesis of MT by aqueous polymerisation. To get a valuable result, a reference sample was made with triethanolamine（TEA）. Influence of triethanolamine （TEA） on concrete strength were investigated ; and mechanism of PMT on the cement hydration process and mierostructure is discussed by means of XRD, SEM,TG-DSC and FTIR. Research results indicate that PMA accelerated hydration process of C3A and C3S,and improved the degree of C-S-H gel. PMA also improved the quality and the structure of the hydration products.

关 键 词：改性醇胺高分子 外加剂 抗压强度 水化 

分 类 号：TQ172[化学工程—水泥工业]