纳米氧化锆在水中分散性研究

鉴于粉体分散对无机膜制备具有重要意义,研究了添加不同分散剂及其加入量对纳米氧化锆粉在水中的分散性,以及分散性与溶液pH值的关系。结果表明:悬浮液的分散性能受到分散剂及其加入量和pH值的影响,不同的分散剂在各自的加入范围内有其最佳加入量。通过对粒径和zeta电位分析,考察含分散剂时pH值对纳米氧化锆粉的分散性能,从中优选最佳pH值的范围。

Study on the dispersion of nano-ZrO2 in water

Aiming at the dispersion of nano-zirconia regarded as the guide of inorganic membranes preparation,the dispersion of nano-zirconia powders in water was studied by adding different dispersants at different concentrations.In addition,the relationship between pH value and the dispersion was investigated.The results of experiments show that:(1) the dispersion of the suspension is drastically subject to the kinds of dispersants,the concentration of(dispersants) and the pH value of suspension;(2) different dispersants have different optimizing concentrations in their applicable range,which have the best disperse results.These suspensions were studied by means of(determined) particle size and zeta potential measurements.The results of dispersants were obtained through varying the pH value.Finally,the optimizing range of pH values was studied.