静电雾化(电子喷射)技术理论基础及实验验证

Theoretical Basis of Electrostatic Atomization and its Experimental Verification

文章介绍了静电雾化(电子喷射)的基本理论和雾化模式;并选用摩尔质量分别为200、300和 400的聚乙烯乙二醇材料进行了静电雾化的实验验证。结果表明:在一定电压和容积流动率的情况下,PEG 300 和PEG 400能够在稳定的锥体喷射模式下进行静电雾化,而且雾化喷射液滴尺寸与材料的黏度有关,随着材料黏度的增大而增大。文章最后指出,静电雾化技术在航天应用领域有很好的前景。

Theoretical basis of electrostatic atomization and, especially, the atomization modes are discussed in this paper. Polyethylene glycols (PEG) are subjected to electrostatic atomization at a constant applied voltage and flow rate. The molecular weights of the PEG are varied in the range of 200-400. The atomization is under the cone-jet mode by controlling the voltage and flow rate. The electrospray is deposited on silicone release paper and the sizes of the relics produced are measured. Results show that at the applied voltage and flow rate, PEG 200 could not reach a stable cone-jet mode. The molecular weight shows a significant effect on the mode of atomization. As for PEG 300 and PEG 400, the increase in molecular weight (also viscosity ) has the effect of increasing the size of relics obtained.