• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2019, Vol. 55 ›› Issue (15): 56-63.doi: 10.3901/JME.2019.15.056

• 特邀专栏:增材制造技术 • 上一篇    下一篇

基于电场驱动喷射沉积微尺度3D打印制造金属网栅透明电磁屏蔽玻璃的研究

周贺飞, 兰红波, 李红珂, 许权, 赵佳伟, 张广明   

  1. 青岛理工大学山东省增材制造工程技术研究中心 青岛 266520
  • 收稿日期:2019-01-14 修回日期:2019-04-28 出版日期:2019-08-05 发布日期:2019-08-05
  • 通讯作者: 兰红波(通信作者),男,1970年出生,博士,教授,博士研究生导师。主要研究方向为微纳尺度3D打印、增材制造、大面积纳米压印、微纳制造、光电子器件制造等。E-mail:hblan99@126.com
  • 作者简介:周贺飞,男,1993年出生。主要研究方向为3D打印和微纳制造。E-mail:13061486850@163.com
  • 基金资助:
    国家自然科学基金(51775288,51805287)和山东省重点研发计划(2018GGX103022)资助项目。

Metal-mesh Transparent EMI Shielding Glass Fabricated by Electric-field-driven Jet Deposition Micro-scale 3D Printing

ZHOU Hefei, LAN Hongbo, LI Hongke, XU Quan, ZHAO Jiawei, ZHANG Guangming   

  1. Shandong Engineering Research Center for Additive Manufacturing, Qingdao University of Technology, Qingdao 266520
  • Received:2019-01-14 Revised:2019-04-28 Online:2019-08-05 Published:2019-08-05

摘要: 为了解决大尺寸金属网栅透明电磁屏蔽玻璃高效和低成本制造的难题,提出一种基于电场驱动喷射沉积微尺度3D打印制造金属网栅透明电磁屏蔽玻璃的新方法。通过试验揭示了打印速度对金属网栅(线宽和形貌)的影响及其规律,打印金属网栅的线宽和周期对于透过率和电磁屏蔽效能的影响和规律。利用提出的方法,并结合优化的工艺参数,完成了三个典型工程案例的制造,使用高银含量(质量分数为80%)的纳米银浆(黏度高达20 000 mPa·s),制作金属网栅的面积为100 mm×100 mm,线宽是20 μm,烧结后金属网栅与玻璃基底的附着力为4 B。其中,金属网栅周期为500 μm时,可见光透过率为88%,对常用中高频电磁波屏蔽效能大于26 dB;金属网栅周期为300 μm时,可见光透过率为83%,对常用中高频电磁波屏蔽效能大于30 dB;金属网栅周期为150 μm时,可见光透过率为67%,对常用中高频电磁波屏蔽效能大于37 dB。结果表明,结合电场驱动喷射沉积微尺度3D打印和高银含量高黏度纳米银浆,为大尺寸高性能透明电磁屏蔽玻璃的批量化制造提供了一种具有工业化应用前景的全新解决方案。

关键词: 金属网栅, 屏蔽效能, 透过率, 透明电磁屏蔽, 微尺度3D打印

Abstract: In order to implement the mass production of the large-area metal-mesh based transparent electromagnetic interference (EMI) shielding glass at low-cost and high throughput, a novel manufacturing method combining the electric-field-driven jet deposition micro-scale 3D printing and the nanosilver paste with a high silver content (80 wt.%) and high viscosity (up to 20000 mPa.s) is proposed. The influence of printing speed on the line width of metal-mesh, and the effects of the line width and the pitch of the printed metal-meshes on the optical transmittance and the electromagnetic shielding efficiency are revealed by a serial of experiments. Moreover, based on the proposed method and the optimized process parameters, three typical cases of the metal-mesh transparent EMI shielding glasses with area of 100 mm×100 mm and line width of 20 μm are fabricated. In addition, the adhesive force between the metal-meshes and the glass substrate are measured as 4B after sintering. The experimental results demonstrated, when the pitch of metal-meshes is 500 μm, the optical transmittance is 88% and the EMI shielding efficiency for the common medium-high frequency electromagnetic wave is greater than 26 dB; when the pitch of metal-meshes is 300 μm, the optical transmittance is 83% and the shielding efficiency for common medium-high frequency electromagnetic wave is higher than 30 dB; when the pitch of metal grids is 150 μm, the optical transmittance is 67% and the shielding efficiency for common medium-high frequency electromagnetic wave is higher than 37 dB. As a result, the proposed method based on the electric-field-driven jet deposition micro-scale 3D printing with the high content nanosilver paste provides a promising solution for mass producing large-area and high-performance metal mesh transparent EMI shielding glasses at low cost.

Key words: metal-mesh, micro-scale 3D printing, optical transmittance, shielding efficiency, transparent EMI shielding

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