采用硬脂酸钠与水溶性钛酸脂对超细氢氧化镁进行湿式复合改性,在改善超细氢氧化镁的表面性能的同时提高过滤性能,并考察表面改性对氢氧化镁料浆洗涤效果的影响。实验结果表明:采用固含率为15%(w/v)的超细氢氧化镁悬浮液为原料,当硬脂酸...采用硬脂酸钠与水溶性钛酸脂对超细氢氧化镁进行湿式复合改性,在改善超细氢氧化镁的表面性能的同时提高过滤性能,并考察表面改性对氢氧化镁料浆洗涤效果的影响。实验结果表明:采用固含率为15%(w/v)的超细氢氧化镁悬浮液为原料,当硬脂酸钠与水溶性钛酸脂的加入量均为1.0 g/100 g Mg(OH)2,可以明显降低滤饼比阻、提高洗涤氯离子的效果,同时吸油值仍可降至42 mL/100 g Mg(OH)2。展开更多
The surface organic modification of TiO2 particles with titanate coupling reagent,which was pre-coated with double layers of SiO2 and Al2O3,was studied.Experiments showed that the modified particles exhibited hydropho...The surface organic modification of TiO2 particles with titanate coupling reagent,which was pre-coated with double layers of SiO2 and Al2O3,was studied.Experiments showed that the modified particles exhibited hydrophobic characteristics.The modification state of the particle surface was characterized by IR spectroscopic measurement,pyrolytic gas chromatography,thermogravimetric analysis and X-ray photoelectron spectra.The titanate coupling reagent binding with the hydroxyl on the particle surface was analyzed.The surface characteristics of pre-modification and post-modification particles were compared.展开更多
文摘采用硬脂酸钠与水溶性钛酸脂对超细氢氧化镁进行湿式复合改性,在改善超细氢氧化镁的表面性能的同时提高过滤性能,并考察表面改性对氢氧化镁料浆洗涤效果的影响。实验结果表明:采用固含率为15%(w/v)的超细氢氧化镁悬浮液为原料,当硬脂酸钠与水溶性钛酸脂的加入量均为1.0 g/100 g Mg(OH)2,可以明显降低滤饼比阻、提高洗涤氯离子的效果,同时吸油值仍可降至42 mL/100 g Mg(OH)2。
文摘The surface organic modification of TiO2 particles with titanate coupling reagent,which was pre-coated with double layers of SiO2 and Al2O3,was studied.Experiments showed that the modified particles exhibited hydrophobic characteristics.The modification state of the particle surface was characterized by IR spectroscopic measurement,pyrolytic gas chromatography,thermogravimetric analysis and X-ray photoelectron spectra.The titanate coupling reagent binding with the hydroxyl on the particle surface was analyzed.The surface characteristics of pre-modification and post-modification particles were compared.