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发明公开
CN105802345A 纳米金属导电油墨及其制备方法和印制线路板 无效 - 驳回

纳米金属导电油墨及其制备方法和印制线路板
摘要：
本发明提供了一种纳米金属导电油墨及其制备方法，其中纳米金属导电油墨包括纳米金属颗粒，且纳米金属颗粒为椭球形形状。本发明还提出一种由该金属导电油墨制备的印制线路板。采用本发明的纳米金属导电油墨，在打印的液滴中椭球导电纳米金属颗粒依赖其形貌而产生较强的粒子间毛细管相互作用力，依靠其粒子间的相互作用力，彼此牵引，整体构成了一个较大力场，这种强且远程的粒子间吸引力使椭球形粒子在液面形成松散聚集结构；进而导致液滴表层的粘度迅速增大，并与液体内部的毛细管流抗衡，防止颗粒被毛细管流输运到边界，阻止了悬浮的粒子移向液滴边缘，因此可很好地抑制咖啡环效应，形成均匀的油墨打印品质。
摘要（英）：

The invention provides nano-metal conductive printing ink and its preparation method. The nano-metal conductive printing ink comprises nano-metal particles with ellipsoidal shapes. The invention also provides a printed circuit board prepared from the nano-metal conductive printing ink. Through use of the nano-metal conductive printing ink, the ellipsoidal conductive nano-metal particles in a printing liquid drop are pulled each other under a morphology-caused strong capillary force between particles so that a large force field is formed, a loose aggregation structure of the ellipsoidal particles is formed on the liquid surface under the strong and remote attraction between particles, and viscosity of the liquid drop surface is fast increased and can resist a capillary flow in the liquid so that the particles are not conveyed into the boundary through the capillary flow and the suspending particles are not moved to the liquid drop edge and thus coffee-ring effects are well inhibited and uniform printing ink printing quality is realized.

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