氨基磺酸系高效减水剂的合成与性能研究  

Synthesis and Properties of Aminosulfonic High Range Water Reducing Agent(HRWRA)

作　　者：王玉春[1] 李恒堂[2] 解真[1] 

机构地区：[1]兰州理工大学石油化工学院,兰州730050 [2]兰州理工大学土木工程学院,兰州730050

出　　处：《化学建材》2009年第4期40-41,45,共3页Chemical Materials for Construction

摘　　要：通过对氨基苯磺酸、苯酚、甲醛三元单体的共缩聚反应,成功合成了氨基磺酸系高效减水剂。实验测得n(苯酚)∶n(对氨基苯磺酸钠)为2.0∶1,n(甲醛)∶n对氨基苯磺酸钠+苯酚)为1.3∶1;加成反应pH值为9,加成反应时间1h左右;缩聚反应pH值9,缩聚反应时间6h左右;反应温度在85℃为最优条件。并研究了合成反应中反应物比例、反应体系pH、反应过程中恒温温度、缩合时间等条件变化对产物分散及分散稳定性的影响。用红外光谱对产物结构进行了表征。Aminosulfonic HRWRA was synthesized through co-polycondensation of tertiary monomers as p-aminobenzene sulfonic acid, phenol and formaldehyde. Testing results showed that optimum conditions were proved to be： npheno ： nacid=2 ： 1 and ncH2O ; n（nacid＋ npheno）=1.3 ： 1, addition reaction time = 1h, pH value of addition reaction =9, pH value of condensation reaction =9, condensation reaction time = 6h and reaction temperature = 85℃. Effects of varied reactant ratio, pH value of reaction system, constant temperature and condensation time on product dispersion and dispersion stability were studied. Structure of product was characterized by way of infrared spectroscopy.

关 键 词：氨基磺酸系 高效减水剂 合成 应用性能 

分 类 号：TU528.042[建筑科学—建筑技术科学]