印制板中炭黑类埋置电阻喷墨打印油墨的制作及性能研究

摘要

文章讲述了印制电路板中炭黑类埋置电阻喷墨打印油墨。制作的油墨黏度经黏度计测得0.087 Pa·s。TGA（热重分析）的分析结果显示油墨的固化条件为180℃、4 h。研究了固化后的埋置电阻油墨性能，包括电阻性能，玻璃化温度Tg，电阻温度系数TCR和热膨胀系数CTE等。该性能参数说明了固化后的埋置电阻油墨能够很好地与市面上大部分的印制电路板的兼容。最后，使用扫描电镜SEM观察到了炭黑颗粒在粘接剂树脂中的分布情况。%A carbon-black based embedded resistor inkjet-printing ink was fabricated for application in printed circuit board(PCB). Rheology test showed that the viscosity of this fabricated ink was 0.087 Pa.s and its curing condition was obtained to be at 180℃for 4h by TGA(Thermo Gravimetric Analysis). The properties of as-cured ink, including Tg(Temperature of glass), TCR (Temperature Coefifcient of Resistance) and CTE(Coefifcient of Thermal Expansion), were studied by DMA(Dynamic Mechanic Analysis), resistance meter and TMA(Thermo Mechanic Analysis), respectively. This embedded resistor ink was compatible with the PCB substrate. Finally, the residence of carbon-black particles in the epoxy adhesive for as-cured ink was investigated by SEM(Scanning Electron Microscope).