Nano-copper catalytic liquid, preparation method thereof and application of nano-copper catalytic liquid in chemical copper deposition

Abstract

The invention relates to the technical field of chemical copper deposition processes, in particular to nano-copper catalytic liquid, a preparation method thereof and application of the nano-copper catalytic liquid in chemical copper deposition. The nano-copper catalytic liquid is an emulsion formed by dispersing a water phase in an oil phase, the water phase is a nano-copper catalytic core and a polymeric dispersant, the oil phase is amino modified silicone oil, and the nano-copper catalytic core is generated through inert atmosphere protection and low-temperature reaction; adding a polymeric dispersant for adsorption, and introducing an oil phase through high-speed shearing emulsification to form a uniform and stable nano-copper catalytic liquid; the high-activity nano-copper is effectively wrapped, so that the problems that the nano-copper is easy to oxidize and agglomerate are solved; according to the application of the prepared nano-copper catalytic liquid in chemical copper deposition, a pulse potential control module is introduced and communicated with a three-stage gradient filtering regeneration device, so that the nano-copper catalytic liquid has self-repairing and cyclic regeneration capacities, and the chemical copper deposition process is improved into an efficient, stable, energy-saving and consumption-reducing modern continuous production process.

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