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气相爆轰过程是一个相当复杂的瞬态物理化学变化过程,目前实验条件还无法观测爆轰过程中的具体变化,因而常常需要借助于数值模拟辅助理论和实验研究。本文以气相爆轰合成纳米二氧化锡为例,将Kruis颗粒长大模型应用于预测气相爆轰法制备纳米氧化物颗粒直径的研究中。通过研究压力与温度之间的转化关系,建立爆轰条件下的颗粒长大模型,计算出颗粒直径并与实验结果进行对比,以期可以通过合理的模型对其直径进行预测,并为最终人为控制爆轰法制备纳米氧化物颗粒直径的大小奠定基础。
The detonation process of gas phase is a rather complex process of transient physico-chemical changes. At present, the experimental conditions can not observe the specific changes in the process of detonation. Therefore, it is often necessary to make use of numerical simulation aided theory and experimental research. In this paper, the gas-phase detonation synthesis of nano-tin dioxide as an example, the Kruis particle growth model is applied to the prediction of gas-phase detonation particle diameter of nano-oxide. By studying the transformation relationship between pressure and temperature, the model of particle growth under the condition of detonation was established, the particle diameter was calculated and compared with the experimental results, in order to predict its diameter through a reasonable model and finally to be artificially controlled Dendritic preparation of nano-oxide particle size lays the foundation.