【摘要】 用钇稳定氧化锆球为研磨介质,用研磨筒内壁和搅拌器都衬以聚氨酯的搅拌磨制备了电子级高纯超细环氧塑封料用石英微粉,研究了石英微粉特征参数d50随搅拌粉磨时间延长的变化规律,考察了钇稳定氧化锆球对石英微粉的污染大小,分析和探讨了1μm以下超细石英微粉的化学成分和形貌特征。实验证明,用该搅拌磨磨细石英砂可获得1μm以下、SiO2的质量分数达到99.91%的高纯超细石英微粉,但难以获得球形石英微粉。更多还原

【Abstract】 Utilizing yttrial-stabilized zirconia balls as grinding medium, the agitator mill whose grinding tube interior and agitator lined with the polyester plastics was used to prepare electron grade superfine quartz powder with high-purity and crystalline by grinding quartz sand. The changing law of the special parameters of superfine quartz powder with the variations of grinding time of the agitator mill,contamination level of yttrial-stabilized zirconia balls on the superfine quartz powder, and the chemical composition and microcosmic shape of the superfine quartz particles which was smaller than 1 μm were discussed. The results showed that the superfine quartz particles below 1 μm and with SiO2 content of 99.91% could be obtained,but it was very difficult to achieve the spherical superfine quartz particles by grinding the quartz sand in agitator mill.更多还原