喷墨印刷工艺对导电墨水导电性能的影响

目的研究喷墨印刷工艺对导电墨水导电性能的影响。方法以EPSON 1390万能平板打印机为输出设备,选取塑料薄膜种类、打印分辨率、打印次数、电路形状为主要工艺指标,运用单因素实验法,测试不同指标作用下各印刷线路的单位电阻值。结果塑料薄膜的表面分子结构对墨水的导电性能有直接影响,表面张力高的塑料有利于获得较好的印刷效果,导电性会得到提高;较高的打印分辨率有利于提高墨层的连接精度,从而提高导电性;适当增加打印次数有利于形成清晰完整的印刷电路,可以降低平均电阻值;印刷电子线路形状不同,导电性能也不尽相同,导电性能顺序为直线型折线型矩形波型环型。结论喷墨印刷工艺对导电墨水的导电性能具有一定的影响,选择合适的印刷工艺有利于提高导电线路的导电性。

Effect of Ink-jet Printing Process on Conductive Properties in Conductive Ink

This work aimed to study the effect of ink-jet printing process on the conductive properties of conductive ink. Based on EPSON 1390 universal plate printer, the plastic type, print resolution, printing times, printed circuit shape were selected as the main process indicators. Single factor experiments were used to test the resistance values of the printed circuit under conditions of different factors. The molecular structure of the surface of plastic film had a direct effect on the ink conductivity, and the conductivity was improved by the plastics with higher surface tension, as it could obtain good print results. The connection precision of the ink layer was improved through higher printing resolution, thereby the conductivity was increased. The average resistance was reduced by increasing the printing times, which was beneficial to the formation of clear and complete printed circuit. The printed electronic circuit with different shapes did not have the same conductivity, and the order of electrical conductivity was: straight type > broken line > rectangular wave pattern > ring. Ink-jet printing technology had a certain effect on the conductivity of conductive ink, and the appropriate printing process would help improve the electrical conductivity of the conductive circuit.