摘要：世界水资源现状不容乐观，要求工业冷却水的循环利用，为减少循环水对设备金属的腐蚀，需要添加缓蚀剂。季铵盐是高温酸化缓蚀剂的重要组成部分，荧光缓蚀剂的结构中含有荧光基团,其在水中的质量浓度可以通过荧光检测迅速而准确地获得，香豆素是常见的具有较高荧光强度的荧光单体。本文以Mannich反应为基础，合成了具有荧光性的香豆素类季胺盐缓蚀剂。62987
（1）综述了缓蚀剂的定义、种类、缓蚀原理；
（2）以7-羟基香豆素为原料经过Mannich反应、季铵化反就合成荧光季铵盐缓蚀剂，并对反应的各种影响因素进行了探究；
（3）通过失重法测试，证明了该季铵盐随浓度增加缓蚀性增强，温度升高缓蚀性增强，吸附能力强，属于化学吸附模型缓蚀剂；
（4）荧光测试确定了荧光强度和缓蚀剂浓度有一定良好的线性关系。
毕业论文关键词：荧光性、季铵盐、缓蚀剂、Mannich反应
Abstract：The present situation of water resources in the world is not optimistic, The recycling of industrial cooling water is more necessary. In order to reduce the corrosion of the metal of the equipment caused by the industrial cooling water, need to add corrosion inhibitor. The quatemary-N is an important part of the high temperature corrosion inhibitor structure , the fluorophore contanined in the structure of the fluorescence corrosion inhibitor ,the mass concentration of the corrosion inhibitor In the water can be obtained by detected by fluoredcence rapidly and accurately. As a common fluorescent monomer coumarin having a hier fluorescence intensity . Based on the Mannich reaction ,this paper designs and synthetic the fluorescent coumarin quaternary-N corrosion inhibitor.
(1) The definition , types ,inhibition principle of the inhibitor are reviewed.
(2) The fluorescent quaternary-N corrosion inhibitor were synthesized by 7-hydroxycoumarin with corresponding aldeyde in ethanol.And several factors that affect the reaction was explored.
(3) It was proved the effect is enhanced with the increase of the temperature and the concentration of the quaternary-N.
(4)It was determined that there are a good linear relationship of the fluorescence intendity and the inhibitor concentration.
Keywords: fluorescence, quaternary-N, corrosion inhibitors, Mannich reaction
目录
中文摘要、关键词. 2
英文摘要、关键词... 3
1 绪论 4
1.1 缓蚀剂的定义、特点 4
1.2 缓蚀剂的分类 4
1.3 缓蚀剂的作用机理 6
1.3.1 无机缓蚀剂的作用原理 6
1.3.2 有机缓蚀剂的作用原理 6
1.4 季铵盐缓蚀剂 7
1.5 曼尼希反应以及曼尼希碱的缓蚀机理 8
1.6 香豆素的荧光性 9
1.7 本文研究内容 9
2 实验部分 11
2.1 仪器 11
2.2 试剂 11
2.3 荧光型季胺盐缓蚀剂的合成与鉴定 12
2.3.1 合成路线与方法 12
2.3.2 第一步反应产物谱图鉴定 Mannich反应荧光型季铵盐缓蚀剂的合成与应用研究:http://www.751com.cn/huaxue/lunwen_69344.html