A systematic printability study of direct ink writing towards high-resolution rapid manufacturing

作     者：Qingyang Zheng Bin Xie Zhoulong Xu Hao Wu Qingyang Zheng;Bin Xie;Zhoulong Xu;Hao Wu

作者机构：Flexible Electronics Research CenterState Key Laboratory of Digital Manufacturing Equipment and TechnologySchool of Mechanical Science and EngineeringHuazhong University of Science and TechnologyWuhanHubei 430074People’s Republic of China Guangdong Sygole Intelligent Technology Co.LtDongguanGuangdongPeople’s Republic of China 

出 版 物：《International Journal of Extreme Manufacturing》 (极端制造（英文）)

年 卷 期：2023年第5卷第3期

页      面：500-517页

核心收录：

学科分类：08[工学] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：supported by National Natural Science Foundation of China(Nos.52188102,U2013213,51820105008) the Technology Innovation Project of Hubei Province of China under Grant No.2019AEA171 The project of introducing innovative leading talents in Songshan Lake High-tech Zone,Dongguan City,Guangdong Province(No.2019342101RSFJ-G) the support from Flexible Electronics Research Center of HUST for providing experiment facility 

主　　题：direct ink writing extrusion mechanism modelling computational fluid dynamic(CFD) printability process parameters high-resolution printing 

摘      要：Direct ink writing(DIW)holds enormous potential in fabricating multiscale and multi-functional architectures by virtue of its wide range of printable materials,simple operation,and ease of rapid *** it is well known that ink rheology and processing parameters have a direct impact on the resolution and shape of the printed objects,the underlying mechanisms of these key factors on the printability and quality of DIW technique remain poorly *** tackle this issue,we systematically analyzed the printability and quality through extrusion mechanism modeling and experimental *** non-Newtonian fluid inks were first prepared,and their rheological properties were ***,finite element analysis of the whole DIW process was conducted to reveal the flow dynamics of these *** obtained optimal process parameters(ink rheology,applied pressure,printing speed,etc)were also validated by experiments where high-resolution(70 mm s^(-1)).Finally,as a process research demonstration,we printed a series of microstructures and circuit systems with hybrid inks and silver inks,showing the suitability of the printable process *** study provides a strong quantitative illustration of the use of DIW for the high-speed preparation of high-resolution,high-precision samples.