摘要
以Mg(NO3)2.6H2O,NaOH和聚丙烯酸钠(PA-Na)为原料,采用直接沉淀法合成改性纳米Mg(OH)2,考察了反应温度、反应时间、Mg2+初始浓度、PA-Na添加量对平均直径、沉降体积的影响,得出了改性的最佳条件,通过红外光谱(FT-IR)、X射线衍射(XRD)、透射电镜(TEM)等对改性前后的样品进行对比分析。结果表明:改性后PA-Na吸附在Mg(OH)2颗粒表面,并且衍射峰主峰强度提高、团聚程度减少。
The surface modified nano-sized magnesium hydroxide was prepared by direct precipitation method with magnesium nitrate, sodium hydroxide and polyacrylate sodium as raw materials. The in fluence of reaction temperature, reaction time, concentration of magnesium nitrate, dosage of polyacrylate sodium on average particle size and sediment volume were discussed. The optimum conditions were confirmed. The modified and unmodified samples were characterized by fourier transform infra- red spectroscopy（FT-IR）,X-ray diffraction（XRD） and transmission electron microscope（TEM）. The results indicate that polyacrylate sodium was adsorbed onto the surface of nano-Mg（OH）2, the main XRD diffraction peak of the nano Mg（OH）2 was strengthened showing low agglomeration of the pre- pared samples.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2008年第10期291-295,共5页
Journal of Materials Engineering
关键词
氢氧化镁
表面改性
聚丙烯酸钠
magnesium hydroxide
surface modification
polyacrylate sodium
