Effect of Viscosity on Droplet Volume During Inkjet Printing

被引：0
|
作者：
Lei X.-X. [1 ]
Ye Y. [1 ]
Lin N. [1 ]
Chen E.-G. [1 ]
Guo T.-L. [1 ]
机构：
[1] College of Physics and Telecommunication Engineering, Fuzhou University, Fuzhou
来源：
Faguang Xuebao/Chinese Journal of Luminescence | 2019年 / 40卷 / 08期
关键词：
Droplet volume; Inkjet printing; Simulation; Viscosity;
D O I：
10.3788/fgxb20194008.1040
中图分类号：
学科分类号：
摘要：
Drop volume is important for quantitative printing, while ink viscosity has an important influence on droplet volume. First, a nozzle model was proposed based on laminar flow-level set method. The ejection processes of droplet with different viscosity at different moments were demonstrated, under the condition that the ink density is 1.0 g/mL, the surface tension is 28 mN/m, and the viscosity is 1-15 mPa•s, and the negative correlation between the droplet volume and viscosity of ink was obtained. Then, the droplet volume was quantified through the integration of the level-set function, and the variation range is 58.10-37.29 pL; and a negative linear relationship between the volume of droplet and the ink viscosity was obtained by linear fitting, specifically, "A=-1.54","B=60.2". Secondly, the printing experiment was carried out by the printing of polythiol ink under the same physical parameters, and the variation range of droplet volume was 149.9-92.9 pL, and the specific fitting relationship between the droplet volume and the ink viscosity was still a negative linear relationship: "A'=-4.12","B'=154.71", which proved the simulation result. And the results of simulation and experiment show that there is a coefficient "h=2.5" between the linear function of them, and coefficient "h" was proven to be independent of the type of ink, but to be determined by the inlet pressure through the further simulation research. This study can help to simplify the quantitative printing process of any type of ink with a lower viscosity. © 2019, Science Press. All right reserved.
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页码：1040 / 1048
页数：8
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