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以Zn(NO3)2·6H2O为原料,25%氨水为配位剂,用NaOH做沉淀剂,十六烷基三甲溴化铵(CTAB)为改性剂制备了具有不同表面接触角的氧化锌微球。采用X射线衍射,扫描电镜和表面ζ电位技术对其进行了表征,并对合成过程中体系中的组分分布以及各组分对形貌的影响进行了分析。泡沫稳定性的实验结果表明:颗粒质量浓度为0.03%,接触角为52.9°的氧化锌颗粒具有对泡沫最强的稳定作用。同时对颗粒的疏水改性和提高泡沫性的机理进行了讨论。
Zn (NO3) 2 · 6H2O as raw material, 25% aqueous ammonia as complexing agent, NaOH as precipitating agent and cetyltrimethylammonium bromide (CTAB) as modifier to prepare zinc oxide with different surface contact angles Microspheres. The X-ray diffraction, scanning electron microscopy and surface zeta potential techniques were used to characterize the composition and the distribution of the components in the system and the influence of each component on the morphology. Experimental results of foam stability show that zinc oxide particles with a mass concentration of 0.03% and a contact angle of 52.9 ° have the strongest stabilizing effect on the foam. The hydrophobic modification of the particles and the mechanism of improving the foam are also discussed.