聚合硫酸铝催化合成双氰胺-甲醛脱色剂  

Synthesis of dicyandiamide formaldehyde decolorizer catalyzed by polyaluminum sulfate

作　　者：徐杨 高艳娥 段志豪 杨佑国[1] 管永华[1] 王海峰[1] XU Yang;GAO Yan′e;DUAN Zhihao;YANG Youguo;GUAN Yonghua;WANG Haifeng(School of Textile and Clothing,Nantong University,Nantong 226019,China)

机构地区：[1]南通大学纺织服装学院,江苏南通226019

出　　处：《印染》2021年第4期52-55,66,共5页China Dyeing and Finishing

基　　金：江苏省科技厅项目(BY2020198)。

摘　　要：以双氰胺、甲醛、聚合硫酸铝为原料,筛选添加剂改善水合比,制备了有机-无机型混合脱色剂。结果表明,当双氰胺、甲醛、聚合硫酸铝和添加剂的物质的量比为1∶2.1∶0.030∶0.17,反应温度为70℃,反应时间为2 h,合成的脱色剂絮凝脱色效果最好,脱色率达99.8%。The organic-inorganic composite decolorizer is prepared by using dicyandiamide,formaldehyde and polyaluminum sulfate as raw materials,and selecting additives to improve the hydration ratio.The results show that when the molar ratio of dicyandiamide,formaldehyde,polyaluminum sulfate and additives is 1∶2.1∶0.030∶0.17,the reaction temperature is 70℃,and the reaction time is 2 h,the flocculation decolorization effect of the composite decolorizer is the best,and the decolorization rate is 99.8%.

关 键 词：废水处理 复合型脱色剂 双氰胺-甲醛脱色剂 

分 类 号：TS199[轻工技术与工程—纺织化学与染整工程]