朱涛,张远明,宋时雨,等.气溶胶微喷射曲面共形打印影响因素的仿真分析与实验研究[J].精密成形工程,2023,15(11):187-198.
ZHU Tao,ZHANG Yuan-ming,SONG Shi-yu,et al.Simulation Analysis and Experimental Research on the Affecting Factors of Aerosol Micro-jet Curved Surface Conformal Printing[J].Journal of Netshape Forming Engineering,2023,15(11):187-198. |
| 气溶胶微喷射曲面共形打印影响因素的仿真分析与实验研究 |
| Simulation Analysis and Experimental Research on the Affecting Factors of Aerosol Micro-jet Curved Surface Conformal Printing |
| 投稿时间：2023-06-26 |
| DOI：10.3969/j.issn.1674-6457.2023.011.022 |
| 中文关键词: 气溶胶微喷射 曲面共形打印 计算流体力学(CFD) 仿真分析 实验验证 |
| 英文关键词: aerosol micro-jet curved surface conformal printing computational fluid dynamics simulation analysis experimental verification |
| 基金项目:山东省自然科学基金(ZR2021ME109);山东省创新能力提升工程(2022TSGC1340) |
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| 中文摘要: |
| 目的 探究气溶胶微喷射曲面共形打印过程中的影响因素，并研究这些因素对打印线条最小特征线宽及形貌的影响规律。方法 针对微喷射曲面共形打印的影响因素，构建基于数值模拟及实验验证的研究模式。基于计算流体力学的数值模拟，对微喷射曲面共形打印过程中喷印头内气溶胶流束喷射的运动过程进行仿真分析。采用控制变量法研究气体流量、工作距离以及喷嘴大小对打印过程及打印线条的影响规律，并在此基础上设计单因素实验加以验证。结果 实验结果表明，最小特征线宽随鞘气流量的增大而逐渐减小，随载气流量、工作距离以及喷嘴直径的增大而逐渐增大。当载气流量为100 mL/min、鞘气流量为400 mL/min、工作距离为3 mm、喷嘴直径为500 μm时，打印线条的最小特征线宽可达43 μm，且未出现明显卫星液滴、沉积空洞及颗粒过喷等缺陷。结论 载气流量、鞘气流量、工作距离与喷嘴直径等因素显著影响了微喷射曲面共形打印柔性电路的最小特征线宽及微观形貌。实验结果与仿真数据具有相同的变化规律，验证了微喷射曲面共形打印仿真的可行性，为微喷射曲面共形打印的研究奠定了基础。 |
| 英文摘要: |
| The work aims to explore the affecting factors in the aerosol micro-jet conformal printing process of curved surfaces, and study the impact rules of these factors on the minimum characteristic line width and morphology of the printed lines. For the affecting factors of aerosol micro-jet conformal printing of curved surfaces, a research model based on numerical simulation and experimental verification was established. Based on computational fluid dynamics numerical simulation, the motion process of the aerosol jet inside the printing nozzle during the micro-jet conformal printing process of curved surfaces was simulated. The method of controlling variables was adopted to study the impact rules of gas flow, working distance and nozzle size on the printing process and printed lines, and single-factor experiments were designed for verification on this basis. The minimum characteristic line width showed a decreasing trend with the increase of the sheath gas flow and an increasing trend with the increase of the carrier gas flow, working distance and nozzle diameter. When the carrier gas flow was 100 mL/min, the sheath gas flow was 400 mL/min, the working distance was 3 mm, and the nozzle diameter was 500 μm, the minimum characteristic line width of the printed lines could reach 43 μm, and no obvious satellite droplets, cavity deposition and particle overspray defects were observed. Factors such as carrier gas flow, sheath gas flow, working distance and nozzle diameter significantly affect the minimum characteristic line width and micro-morphology of flexible circuits by aerosol micro-jet conformal printing of curved surfaces. The experimental results have the same changing rules as the simulation data, which verifies the feasibility of simulation of aerosol micro-jet conformal printing of curved surfaces and lays the foundation for the study of aerosol micro-jet conformal printing of curved surfaces. |
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