柔性基底导电银墨水喷墨打印工艺分析

发布时间：2018-04-15 03:31

  本文选题：喷墨打印 + 银墨水　； 参考：《微纳电子技术》2017年11期

【摘要】：以银导电墨水为打印墨水材料,以热塑性聚氨酯弹性体橡胶(TPU)薄膜为柔性基底材料,通过压电式材料喷墨打印机在柔性基底上打印导电膜图形。通过光学显微镜对基底材料表面打印银墨水状态观察发现:基底表面亲水处理可以有效提高基底对银墨水的吸附力;柔性薄膜适当的预拉伸有利于提高薄膜平整度,提高墨水打印导电膜图形的质量;墨滴质量、喷嘴状态及喷嘴和基底薄膜的间隙校正是保证打印均匀性的关键;在烧结工艺中,采用逐渐提高温度的方式,可达到逐渐释放热应力的目的,减少由于温度剧变对TPU薄膜表面银墨图形结构产生变形或龟裂的现象,可有效地提高烧结后所形成导电图案的完整性和连续性。
[Abstract]:Silver conductive ink was used as printing ink and thermoplastic polyurethane elastomer (TPU) film was used as flexible substrate. The pattern of conductive film was printed on flexible substrate by piezoelectric inkjet printer.The observation of silver ink on the substrate surface by optical microscope shows that hydrophilic treatment on the substrate surface can effectively increase the adsorption force of the substrate to silver ink, and the proper prestretching of the flexible film can improve the smoothness of the film.Improving the quality of ink printing conductive film pattern, ink droplet quality, nozzle state and gap correction between nozzle and substrate film are the key to ensure printing uniformity.The thermal stress can be released gradually and the deformation or crack of silver ink pattern on the surface of TPU film can be reduced due to the sharp change of temperature. The integrality and continuity of the conductive pattern formed after sintering can be improved effectively.
【作者单位】： 桂林电子科技大学机电工程学院;
【基金】：国家自然科学基金资助项目(61474032) 广西研究生教育创新计划资助项目(YCSW2017135)
【分类号】：TP334.83
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本文编号：1752348