纳米氢氧化镁阻燃剂的制备研究  

Study on preparing nanometer magnesium hydroxide flame retarder

作　　者：吴士军[1] 

机构地区：[1]呼和浩特职业学院生物化学工程学院,内蒙古呼和浩特010070

出　　处：《应用化工》2010年第6期834-836,839,共4页Applied Chemical Industry

基　　金：内蒙古自治区高等学校科学研究项目(NJC07188)

摘　　要：以氯化镁和氨水为原料,加入适量聚乙二醇(PEG2000)作为表面活性剂,利用直接沉淀法合成了粉末状、粒度均匀且分散性好的纳米氢氧化镁。考察了体系温度、沉淀时间、搅拌速率、反应物配比、PEG2000用量对氢氧化镁颗粒平均粒径的影响,并采用透射电镜(TEM)、X射线衍射(XRD)对颗粒结构进行表征。结果表明,制备纳米氢氧化镁的适宜的工艺条件为:体系温度25℃,沉淀时间20 min,搅拌速率500 r/min,反应物氯化镁和氨水的配比(摩尔比)为1∶3.0,PEG2000用量为1.50 g/mol MgCl2。Magnesium hydroxide with nanometer level,powder shape,even particle size and fine dispersion was synthesized by direct precipitation method with magnesium chloride and ammonia as raw materials and PEG 2000 as surfactant.Effects of system temperature,precipitation time,the stirring speed,molar ratio of reactants and the quantity of PEG 2000 on the mean particle size of Mg（OH）2 particles were studied and morphological structure of the particle was characterized by transmission electron microscopy（TEM） and X-ray diffraction（XRD）.The results showed that the optimum conditions for preparing nanometer magnesium hydroxide were as follows：system temperature 25 ℃,precipitation time 20 min,stirring speed 500 r/min,molar ratio of reactants 1∶3.0,PEG 2000 amount 1.50 g/mol MgCl2.

关 键 词：纳米氢氧化镁 表面活性剂 直接沉淀法 团聚 

分 类 号：TB34[一般工业技术—材料科学与工程]