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[1]汪艳,王伟,张俊,等.轻烧镁粉制备超细片状氢氧化镁[J].武汉工程大学学报,2013,(01):46-50.[doi:16742869(2013)01004605]
 WANG Yan,WANG Wei,ZHANG Jun,et al.Preparation of superfine and sheet magnesium hydroxide?from calcined magnesite[J].Journal of Wuhan Institute of Technology,2013,(01):46-50.[doi:16742869(2013)01004605]
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2013年01期
页码:
46-50
栏目:
资源与土木工程
出版日期:
2013-01-31

文章信息/Info

Title:
Preparation of superfine and sheet magnesium hydroxide?from calcined magnesite
文章编号:
103969/jissn16742869201301010
作者:
汪艳1王伟1张俊2胡珊2
1. 武汉工程大学材料科学与工程学院,湖北 武汉 430074;2. 中国地质大学材料与化学学院,湖北 武汉 430074
Author(s):
WANG Yan1 WANG Wei1 ZHANG Jun2 HU Shan2
1. School of Material Science and Engineering, Wuhan Institude of Technology,Wuhan 430074, China;2. Faculty of Materials Science and Chemical, China University of Geosciences, Wuhan 430074, China
关键词:
轻烧镁粉粒度表面活性剂形貌
Keywords:
calcined magnesite particle size surfactant morphology
分类号:
TQ174.1+5
DOI:
16742869(2013)01004605
文献标志码:
A
摘要:
以轻烧镁粉为镁源,氨水为沉淀剂,采用直接沉淀法制备超细片状氢氧化镁.通过粒度测试仪研究了不同反应条件对氢氧化镁平均粒径的影响,最终得到合成氢氧化镁的最佳工艺条件.利用X射线衍射、热失重分析、扫描电子显微镜和红外光谱仪对产物氢氧化镁进行了表征.分析了表面活性剂对制备氢氧化镁的影响.结果表明:实验所得产物为超细氢氧化镁,且晶体比较完善,形貌为六方片状.最佳合成工艺条件为反应温度40 ℃、反应时间1.5 h、氨水的用量和滴加速度分别为170 mL和12 mL/min;添加阴离子表面活性剂十二烷基苯磺酸钠能有效改善氢氧化镁的分散性和形貌.
Abstract:
High purity alumina ceramic has bright application prospect in advanced national defense technology fields of aeronautics and astronautics because of its high mechanical strength. Ordinary sintered high purity alumina ceramic has poor toughness, so it’s necessary to find out efficient methods to enhance its toughness. Nanotoughening of high purity Al2O3 ceramic was carried out in multimode cylindrical microwave sintering resonant cavity. The influence of nanocrystalline Al2O3 powder on the properties of sintered ceramic was researched by adding different amount of nanocrystalline Al2O3 powder into Al2O3(99.9 wt.%),MgO(0.05wt.%),Y2O3(0.05wt.%)mixture. Results show that the density, vickers hardness and fracture toughness of sintered Al2O3 ceramic reaches 3.92 g/cm3, 23.2 GPa and 4.21 Pa·m1/2 respectively when the addition of nanocrystalline Al2O3 powder is 30wt.%. Compared with no nanocrystalline Al2O3 powder addition, the density reduces 0.5%, vickers hardness increases 2.2% while fracture toughness enhances 33.7%.

参考文献/References:

[1]Martinal V,Labor M,PetricN,et al. Sedimentation of magnesium hydroxide in seawater and its effect on plant capacity\[J\].Indian J Mar Sci, 1997, 26(4):335340.[2]郭如新. 日本氢氧化镁生产现状及应用 前景\[J\]. 海湖盐与化工,2001, 30(5):2427.

3]郭如新. 美国氢氧化镁生产现状及应用前景\[J\]. 海湖盐与化工,2000, 29(3):3538.[4]金陵. 无极阻燃剂氢氧化镁发展潜力惊人\[N\]. 中国化工报,20011010(3).[5]张波, 李丽娟. 花球状氢氧化镁制备过程中的颗粒形成机理研究\[J\]. 广州化工, 2010,38(10):37.[6]Yi Ding, Guangtao Zhang, Hao Wu,et al. Nanoscale Magnesium Hydroxide and Magnesium Oxide Powder:Control over Size,Shape,and Structure via Hydrothermal Synthesis\[J\].Chem mater, 2001,13(2):435440.
[7]Chenlin Yan, Dongfeng Xue, Longjiang Zou, et al. Preparation of magnesium hydroxide nanoflowers\[J\]. Journal of Crystal Growth, 2005, 282(34):448454.

相似文献/References:

[1]汪艳,王伟,张俊,等.轻烧镁粉制备超细片状氢氧化镁[J].武汉工程大学学报,2013,(01):41.[doi:16742869(2013)01004105]
 WANG Yan,WANG Wei,ZHANG Jun,et al.Preparation of superfine and sheet magnesium hydroxidefrom calcined magnesite[J].Journal of Wuhan Institute of Technology,2013,(01):41.[doi:16742869(2013)01004105]

备注/Memo

备注/Memo:
收稿日期:20120521基金项目:国家自然科学基金项目(11175137 );湖北省教育厅科学技术研究项目(Q20121501);武汉工程大学科学研究基金(11111051)作者简介:熊礼威(1983),男,湖北仙桃人,讲师,博士.研究方向:低温等离子体技术及新型功能材料制备.
更新日期/Last Update: 2013-04-10