武汉工程大学学报2017，Vol.39Issue(1)：54-58,5.DOI:10.3969/j.issn.1674-2869.2017.01.009
反应温度和反应时间对三水碳酸镁晶须长径比的影响
Influence of Temperature and Time on Aspect Ratios of Magnesium Carbonate Trihydrate Whiskers
摘要
Abstract
To expand the application as enhanced toughening agent and flame retardant agent,the magnesium carbonate trihydrate whiskers with different aspect ratios were synthesized by hydrothermal method,using magnesium chloride and ammonium bicarbonate as raw materials.The phase and morphology of the magnesium carbonate trihydrate whiskers were characterized by X-ray Diffraction,Scanning Electron Microscopy and Transmission Electron Microscopy.The results show that the aspect ratios of magnesium carbonate trihydrate whiskers decrease with the reaction temperature rising from 50 ℃ to 80 ℃ at reaction time of 5 h,but they increase with whiskers further growth at reaction time of 4 h-5 h and reaction temperature of 50℃. The whisker dissolves with phase transition at reaction time of 7 h,which reduces the aspect ratios.Finally,we find that the growth mechanism of magnesium carbonate trihydrate whiskers belongs to the step growth mechanism through the further analysis of whiskers head.关键词
三水碳酸镁/晶须/水热法/长径比/台阶生长Key words
magnesium carbonate trihydrate/whisker/hydrothermal method/aspect ratio/growth step分类
通用工业技术引用本文复制引用
陈娟,黄志良,陈常连,李文昭,徐伟荣..反应温度和反应时间对三水碳酸镁晶须长径比的影响[J].武汉工程大学学报,2017,39(1):54-58,5.基金项目
国家自然科学基金（51374155）；湖北省重点科技支撑计划（2014BCB034）；湖北自然科学基金 （）
