氧化镁晶须制备及影响因素考查  

Preparation of MgO whiskers and investigation on their influence factors

作　　者：薛冬峰[1] 邹龙江[1] 闫小星[1] 王雷[1] 王晓丽[1] 

机构地区：[1]大连理工大学精细化工国家重点实验室

出　　处：《大连理工大学学报》2007年第4期488-493,共6页Journal of Dalian University of Technology

基　　金：高等学校全国优秀博士学位论文作者专项资金资助项目(200322);国家自然科学基金资助项目(20471012);高等学校博士学科点专项科研基金资助项目(20040141004)

摘　　要：为了促进氧化镁晶须的规模化生产与工业应用,采用前驱物煅烧法制备了氧化镁晶须.以氯化镁为原料、碳酸钠为沉淀剂制备了结晶良好的水合碳酸镁晶须;控制碳酸镁的热分解条件保持晶须形状不被破坏,在煅烧情况下将其转变为氧化镁晶须.采用X射线衍射仪和扫描电子显微镜对产物的组成、形态和结构进行了表征.结果表明,所得氧化镁晶须直径2～5μm,长度约为60μm.另外,对影响晶须形成的一些主要因素进行了初步探讨,同时简要介绍了利用碱式氯化镁、碱式硫酸镁获得氧化镁晶须的方法,探索性地拓展了氧化镁晶须的工业生产.To promote the scale-up production and industrial application of magnesium oxide （MgO） whiskers, MgO whiskers were prepared by the calcination method of the precursors. MgO whiskers were prepared via a chemical reaction between magnesium chloride and sodium carbonate followed with the heat treatment. The composition, the morphology and the structure of these whiskers were characterized by X-ray diffraction and scanning electron microscopy. The results indicate that the diameter of MgO whiskers is in the range of 2-5/;m and the length is about 60μm. The influence of various process parameters on the whiskers was investigated. Other fabrication methods have been briefly introduced from basic magnesium chloride whiskers and magnesium hydroxide sulfate hydrate whiskers. These methods, in a certain case, extend the industrial production of MgO whiskers.

关 键 词：氧化镁 晶须 影响因素 

分 类 号：O164.22[理学—数学]