摘要
采用易于工业化的液相沉淀法,在石油磺酸盐的作用下,合成改性纳米氢氧化镁。通过沉降体积实验确定改性剂的最佳用量为0.2%(质量分数)。通过X射线衍射(XRD)、透射电镜(TEM)、N2吸附、堆密度分析等手段对改性前后样品进行表征分析。结果表明:改性后样品分散性好,结晶度高。红外光谱(FT-IR)和沉降实验结果表明:该方法可以使改性剂吸附在氢氧化镁颗粒表面,使氢氧化镁表面由亲水性变成亲油性,可提高氢氧化镁在有机介质中的分散稳定性。
The surface modified nano-sized magnesium hydroxide was synthesized by wet precipitation method using the petroleum sulfonate as surface modifiers. The yield of the surface modified Mg （OH）z nano-particles was about 98%. The optimum dosage of modifying agent was 0.2% of the mass of sodium hydroxide, which was confirmed by sedimentation volume experiments. The unmodified and modified samples were characterized by X-ray diffraction （XRD）, transmission electron microscope （TEM）, N2 adsorption, tap density test, respectively. The experimental results showed that the modified samples had good dispersion and crystal. Fourier transform infrared spectroscopy （FT-IR） and the sedimentation volume experiments results suggested that the mixed surfactants were adsorbed onto the surface of Mg （OH）2 nano-particles changing the hydrophilic surface into hydrophobic and improving the dispersion stability in organic medium.
出处
《中国粉体技术》
CAS
北大核心
2010年第6期67-70,共4页
China Powder Science and Technology
基金
山西省重点实验室开放基金项目
编号:2008012013-11
关键词
纳米材料
氢氧化镁
改性
nanometer materials
magnesium hydroxide
modification
