【作者】 何娟；

【导师】 何廷树；

【作者基本信息】 西安建筑科技大学 ， 材料学， 2004， 硕士

【摘要】 本文详细介绍了常用的高效减水剂结构类型及性能特点；国内、外高效减水剂和氨基磺酸盐高效减水剂的研究应用现状。并且从作用机理入手探讨了减水剂的合成方法及发展趋势。 以单因素法为基础优化了传统氨基磺酸盐高效减水剂的合成工艺参数，按照最佳合成工艺参数合成出的产品，其性能得到了改善。以传统氨基磺酸盐高效减水剂合成原理为基础，在合成反应过程中加入了廉价的改性单体U，使产品ASH-JD的成本降低17％。 论文详细研究了反应单体的摩尔比、反应温度、时间、浓度、反应溶液的酸碱度及甲醛的滴加速度等对产品ASH-JD性能的影响，通过试验，得到了这些因素的最佳水平。 按照相关标准，对产品进行了测试，所开发的低成本改性氨基磺酸盐高效减水剂ASH-JD的各项性能如减水率、抗压强度比、增强效果、引气性、坍落度保持效果、与水泥适应性、收缩性能、抗冻融性能、抗渗性能等相当于传统氨基磺酸盐高效减水剂，性能价格比优于萘系高效减水剂。更多还原

【Abstract】 In this paper, the types and performance characteristics of commonly used superplasticizers, the research and application actualities of superplasticizers and aminosulfonic-based superplasticizer both in and outside China were introduced in detail. Based on the action mechanisms of superplasticizers, their synthesizing methods and development trends were also discussed.The parameters of synthesizing technology of traditional aminosulfonic-based superplasticizers were optimized through mono-factor method. According to those optimum parameters, the performances of product were improved. Based on the reaction principle of traditional aminosulfonic-based superplasticizers, the cheap modifier was added in the synthesizing process, so the production costs of superplasticizer ASH-JD can be decreased by 17%.The factors influencing on the performance of ASH-JD such as the Moore ratio of monomers, the reaction temperature and time, concentration, the pH value of reaction solution and the drippy speed of formaldehyde were studied carefully. Through experiments, the optimum level of those factors was gained.According to relative criteria, the performance of ASH-JD such as ratio of water-reducing, ratio of compressive strength, effect of enhancing strength, ratio of bleeding, air entrainment content, effect of keeping slump value, compatibility with cement, resistance to concrete shrinkage and damage by freezing and thawing and impermeability to water etc are all equal to the traditional aminosulfonic-based superplasticizers, and the ratio of performance to price is better than naphthalene series superplasticizers.更多还原