| 均匀沉淀法制备纳米MgO |
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| 引用本文： | 张文龙,徐景文,吉超,戴亚杰,赵洪,王暄.均匀沉淀法制备纳米MgO[J].哈尔滨理工大学学报,2010,15(6):112-115. |
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| 作者姓名： | 张文龙 徐景文 吉超 戴亚杰 赵洪 王暄 |
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| 作者单位： | [1]哈尔滨理工大学材料科学与工程学院,黑龙江哈尔滨150040 [2]哈尔滨理工大学电气与电子工程学院,黑龙江哈尔滨150080 [3]工程电介质与及其应用教育部重点实验室,黑龙江哈尔滨150080 |
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| 基金项目： | 国家自然科学基金，黑龙江省自然科学基金 |
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| 摘 要： | 以硝酸镁和尿素为原料,聚乙二醇为分散剂,用均匀沉淀法合成了氢氧化镁,并将其煅烧制得纳米MgO.讨论了反应温度、反应时间、反应物配比对氢氧化镁产率的影响.确定了合成氢氧化镁工艺;用视比容分析方法确定了制备纳米MgO煅烧工艺;并通过SEM对纳米MgO的形貌进行了分析,得到了平均粒径为50 nm分散较好的纳米MgO.实验合成氢氧化镁的最佳条件为:反应温度125℃;反应时间5h;反应物配比(尿素/Mg(NO3)2.6H2O)为6:1;最佳煅烧工艺为:温度500℃,时间2h.
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| 关 键 词： | 纳米氧化镁 均匀沉淀法 煅烧工艺 |
Preparation of Nano-magnesia by Homogeneous Precipitation |
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| ZHANG Wen-long,XU Jing-wen,JI Chao,DAI Ya-jie,ZHAO Hong,WANG Xuan.Preparation of Nano-magnesia by Homogeneous Precipitation[J].Journal of Harbin University of Science and Technology,2010,15(6):112-115. |
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| Authors: | ZHANG Wen-long XU Jing-wen JI Chao DAI Ya-jie ZHAO Hong WANG Xuan |
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| Affiliation: | 1.School of Material Science and Engineering,Harbin University of Science and Technology,Harbin 150040,China;2.School of Electrical and Electronic Engineering,Harbin University of Science and Technology,Harbin 150080,China;3.Key Laboratory of Engineer Dielectrics and Its Application,Harbin 150080,China) |
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| Abstract: | With Mg（NO3）2·6H2O and CO（NH2）2 as raw materials,PEG as dispersing agent,the Mg（OH）2 is synthesized by homogeneous precipitation method,and then nanometer magnesium oxide（nano-MgO） is obtained by calcination.The effects of reaction temperature,reaction time and reactant ratio on yield of Mg（OH）2 are discussed.The synthesis technology of Mg（OH）2 is determined.The calcination technology of nano-MgO is determined by the analysis of apparent specific volume.Morphological structure of the nano-MgO is analyzed by SEM,and then the average size 50nm and well dispersed nano-MgO was obtained.The optimum condition of synthesis of Mg（OH）2 are defined： the reaction temperature 125℃,the reaction time 5h,reactant ratio（CO（NH2）2/Mg（NO3）2·6H2O） 6∶1,best calcination technology of Mg（OH）2： calcination temperature 500℃ and calcination time 2h. |
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| Keywords: | nano-MgO homogeneous precipitation method calcination technology |
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