







摘要:本文以4-氯-1,8-萘二甲酸酐与3-二甲氨基丙胺为原料合成WL-2001;以甲醇、甲醇钠与WL-2001为原料合成WL-2002;以WL-2002与丙酮、氯丙烯为原料合成WL-2003,再与羧基类单体、磺酸基单体进行共聚反应,得到荧光聚合物。本文方法具有工艺简单,易于控制,纯化方便的优点。荧光单体具有较好的荧光强度,且激发波长为365nm,发射波长为450nm,减少了190~230nm范围内紫外光区造成的干扰;研究结果,荧光聚合物具有优异的阻垢效果,其阻垢性能与S-700相当,而且其浓度与荧光强度的线性关系良好,相关系数可达0.998,因此可以快速准确地监测工业循环冷却水中药剂的浓度,非常适用于工业循环水处理领域。
关键词:荧光聚合物;合成;表征;应用
Abstract:Wl-2001 was synthesized from 4-chloro-1,8-naphthalene dicarboxylic anhydride and 3-dimethylaminopropylamine; Wl-2002 was synthesized from methanol, sodium methoxide and wl-2001; wl-2003 was synthesized from Wl-2002, acetone and chloropropene, and then copolymerized with carboxyl monomers and sulfonic monomers to obtain fluorescent polymer. This method is simple process and easy to control . The fluorescent monomer has a good fluorescence intensity, and the excitation wavelength is 365 nm, the emission wavelength is 450 nm, which reduces the interference caused by the ultraviolet region in the range of 190-230 nm; The results show that the fluorescent polymer has excellent scale inhibition effect, its scale inhibition performance is equivalent to S-700, and the linear relationship between its concentration and fluorescence intensity is good, the correlation coefficient can reach 0.998, so it can quickly and accurately monitor the concentration of chemicals in industrial circulating cooling water, and is very suitable for the field of industrial circulating water treatment.
Key words:Fluorescent Polymer; Synthesis; Characterization; Application
前言
在工業生产中的循环水系统长期循环使用,会造成结垢、微生物危害、腐蚀等问题,因此在循环水中加入各种水处理剂,对于保证设备的运行有非常重要的作用。目前国内常用于循环水处理的成分多为含磷化合物,然而磷容易造成水体污染而导致水体富营养化问题。为了实现绿色环保、节水减排的目标,对工业循环冷却水处理的要求越来越高,必须采取 “降磷”措施,磷系水处理剂将逐步被无磷适合高浓缩倍数运行的环保型水处理剂所替代,如冯婕【1】发明了无膦水处理剂,但是由于水中药剂含量的数值很小,只有2ppm左右,测试误差比较大,无法精准衡量水质中所含药剂的浓度,所以目前现有技术大多都采用在药剂中加入荧光剂【2】,通过测定荧光值来监测水中药剂的浓度,但是药剂的消耗和荧光剂的消耗又不成比,长期使用会引起很大的偏差,所以迫切需要合成一种带荧光的示踪化合物来代替原有的荧光剂【3】。……