Study on Preparation and Properties of Nano Silica by Sol Gel Method
Based on the green environment protection and effective utilization,this experiment adopted the sol gel method to obtain the super hydrophobic nano sol with controllable particle size by continuously adjusting and optimizing the raw material ratio and reaction conditions and other influencing factors with tetraethyl orthosilicate as the raw material and ammonia as the basic catalyst.The experimental results show that when the amount of TEOS is 3 mL,the amount of EtOH is 80 mL,and the amount of NH4OH is 2 mL,the temperature is 60 ℃,and the reaction time is 1.5 hours,its functional groups,morphological characteristics,and particle size are characterized by infrared spectroscopy,scanning electron microscopy(SEM),and nano particle size analyzer.The results show that nano SiO2 particles with an average diameter of less than 200 nm have been obtained.
万方数据
维普
