CAJ | 학술논문

多孔状纳米SiO2微粉的制备是以水玻璃和盐酸为原料，添加适宜的稳定剂（非离子表面活性剂）在适宜的pH值和温度下沉淀合成。要得到性能优良的SiO２纳米微粉，最佳工艺的研究尤其重要。用BDL-B型电位仪、BET、EPMA-电子探针及DTA-TGA等手段对其性能进行了表征，结果表明，制得的SiO2超细微粉，颗粒呈多孔状，具有巨大的比表面积，高达1000m2／g以上，孔径为25Å左右。粒度分布均匀，粒度可达纳米级，这种粉末具有特殊的性能。
다공상납미SiO2미분적제비시이수파리화염산위원료，첨가괄의적은정제（비리자표면활성제）재괄의적pH치화온도하침정합성。요득도성능우량적SiO２납미미분，최가공예적연구우기중요。용BDL-B형전위의、BET、EPMA-전자탐침급DTA-TGA등수단대기성능진행료표정，결과표명，제득적SiO2초세미분，과립정다공상，구유거대적비표면적，고체1000m2／g이상，공경위25Å좌우。립도분포균균，립도가체납미급，저충분말구유특수적성능。
The nano－SiO2 powders were prepared from water－glass and HClsolution by means of adding surfactant by precipitation process at a suitable pH value and temperature. The research on the optimum technology is very important to obtain the nano－SiO2 powders with excellent properties. BDL－B type potential instrument，BET，EPMA－electronic probe，DTA－TGA，TEM and some other experiment methods were used to investigate the structure and properties of the samples.The experiments showed that the obtained ultrafine SiO2 powders present porous particles with particle size＜100nm，specific surface area more than 100m2／g，the pore diameter about 25Åand well－distributed.