居殿春¹,姚海威¹,麻晗²,毛瑞²,高建军³,严定鎏³

• 1:江苏科技大学 张家港校区 冶金与材料工程学院，江苏 张家港 215600
• 2:江苏(沙钢)钢铁研究院，江苏 张家港 215625
• 3:钢铁研究总院先进钢铁流程及材料国家重点实验室，北京 100081

摘要(Abstract)：

针对溶解温度制约氧化锌在氯化胆碱-尿素（ChCl-urea）中的溶解度及溶解速度，提出运用热重研究氧化锌质量浓度ρ（ZnO）、保温时间及温度对ChCl-urea-ZnO体系热稳定性的影响，并对热重最终残余物的物相及形貌进行分析。研究表明ChCl-urea-ZnO体系随着ρ（ZnO）的增加，溶液的热重法（TG）及微分热重法（DTG）曲线向高温方向移动，表现出更好的短期热稳定性；当0 h<t<8 h时，ρ（ZnO）越高长期热稳定性越好；当8 h<t<16 h时，ρ（ZnO）越高长期热稳定性逐渐变差；当16 h<t<64 h时，ρ（ZnO）越高长期热稳定性越差，最终溶液的颜色随着ρ（ZnO）的增加由原来的无色逐渐变成黄色再到黑色，并且发生膨胀；热重最终残余物在400℃下为碱式氯化锌（ZnOHCl）和二水合氧氯化锌（Zn₂OCl₂·2H₂O），随着焙烧温度的升高逐渐有ZnO形成，当焙烧温度为500℃时，热重最终残余物完全转化为ZnO。

关键词(KeyWords)： 低共熔溶剂;氧化锌;热稳定性;最终残余物

Abstract:

Keywords:

基金项目(Foundation): 江苏省研究生科研与实践创新计划项目（KYCX20_3134）。

作者(Author): 居殿春¹,姚海威¹,麻晗²,毛瑞²,高建军³,严定鎏³

DOI: 10.3969/j.issn.1003-9015.2020.06.008

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