PCB喷墨打印技术用高分散的纳米银研制

以硝酸银为原料，PAAS（聚丙烯酸钠）为分散剂，硼氢化钾为还原剂，采用还原法成功地制备了纳米银。通过X－射线衍射分析仪（XRD）和透射电子显微镜（TEM）对纳米银进行了表征，结果显示，在水溶剂作用下，得到的纳米银为球形、单晶、粒径为30nm左右，且无其他的氧化物存在。探讨了不同还原剂的量和分散剂对制备纳米银的影响，表明在还原剂KBH4和分散剂PAAS作用下，制备的纳米银粒径大小均一，无团聚。制备的高分散纳米银为PCB喷墨打印的应用奠定了基础。

PCB ink-jet printing technology Development of Highly Mono-dispersed Silver Nano particles

Potassium borohydride as reducing agent, silver nitrate as oxidant, add the sodiufn polyacrylate as dispersant, silver nanoparticles were successfully prepared by reduction method. The XRD and TEM of characterization of nano-silver, the results showed that single crystal, spherical, diameter of about 30 nm nanosilver was obtained with water as the solvent, and no other oxide exist. We studied effect different reducing agent and dispersant on the synthesis of nano-silver. It was indicated that the silver nano-particles was dispersion and uniformity with potassium borohydride as reducing agent and the sodium polyacrylate as dispersant. The preparation of highly dispersed nano-silver laid the foundation for PCB inkjet technology applications.