通过测定表面张力γg L、润湿角θ,计算润湿吉布斯自由焓ΔG,确定选用活性剂的种类,同时测定加入非离子表面活性剂的醋酸锌溶液的表面张力,并结合磷酸锌对OP 10吸附量Г,推测OP 10在微晶磷酸锌制备中的作用机理。结果表明:非离子表面活性剂OP 10可降低醋酸锌溶液的表面张力,形成临界胶束,在新生成的磷酸锌表面产生S型吸附,形成空间位阻效应,从而阻止磷酸锌粒子的聚集,控制磷酸锌颗粒尺寸。[ Abstract] To select the suitable surfactant ,wetting Gibbs free energy change ΔG were calculated by the measurement
for surface tensionγg-L and wetting anglesθof Zinc phosphate with different surfactants .According to the measured
values for surface tension of zinc acetate solution having non-ionic surfactant and the corresponding adsorption of OP-10 on
Zinc Phosphate , the action mechanism of OP-10 in preparation of microcrystalline Zinc Phosphate was inferred .The results
show that the non-ionic surfactant can reduce the surface tension of zinc acetate aqueous solution to form critical micelle
and produce S-style absorption on the surface of original zinc phosphate to form the sterically hindered effect ,which are
helpful to preventing particle agglomeration and diminishing the size of zinc phosphate .广西科技厅青年基金项目(桂科青0339012);广西教育厅项目(2003);广西民族学院重点项目(2003
