Li Gang, Xiao Xingzhi, Liu Tingting, Gu Mingfei, Dai Rong, Liao Wenhe
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China.
Langmuir. 2023 Sep 26;39(38):13599-13610. doi: 10.1021/acs.langmuir.3c01607. Epub 2023 Sep 12.
The utilization of high-viscosity paste jetting technology has the potential to significantly expand the range of available materials and enhance the three-dimensional forming efficiency compared to inkjet printing. In this study, the three-dimensional morphology and contour quality of lines printed using high-viscosity silver paste were investigated. Four types of lines were identified based on differences in the printing shape, and contour fluctuation evaluation indices were defined in both the transverse and longitudinal directions to establish quantitative distinction principles. Based on the research of inkjet printing, a modified theoretical model relating the dimensionless line width and droplet spacing was established considering the cross-sectional characteristics of the lines printed by high-viscosity paste jetting. With the establishment of mathematical models, distinction criteria between various line shapes were obtained and the printable range of uniform lines was determined. Finally, based on response surface methodology, the influences of single droplet jetting parameters, the line printing speed, and their interactions on the line contour fluctuation were analyzed. This study involved theoretical and experimental research on the line morphology and contour quality, which can provide support for control of the line printing quality in high-viscosity paste jetting technology.
与喷墨打印相比，高粘度浆料喷射技术的应用有可能显著扩大可用材料的范围，并提高三维成型效率。在本研究中，对使用高粘度银浆料打印的线条的三维形态和轮廓质量进行了研究。根据打印形状的差异识别出四种类型的线条，并在横向和纵向定义了轮廓波动评估指标，以建立定量区分原则。基于喷墨打印的研究，考虑高粘度浆料喷射打印线条的横截面特征，建立了修正的无量纲线宽与液滴间距关系的理论模型。通过建立数学模型，获得了各种线条形状之间的区分标准，并确定了均匀线条的可打印范围。最后，基于响应面法，分析了单滴喷射参数、线条打印速度及其相互作用对线条轮廓波动的影响。本研究涉及线条形态和轮廓质量的理论与实验研究，可为高粘度浆料喷射技术中线条打印质量的控制提供支持。
