Shenzhen Huake-tek Co., Ltd.

Shidong Jin

Haibo Wang

Xiaoming Li

Xiping Zeng

Junqing Wu

Jianlong Kang

This invention relates to the nano metal material preparation technology field, especially to the preparation method of one kind, of nano-rings. This invention uses polyvinyl pyrrolidone of different molecular weights as surface-protecting agent and dissolves silver nitrate in the low molecular weight polyvinyl pyrrolidone ethylene glycol solvent under frozen conditions. Frozen conditions can slow down or inhibit silver ions from being reduced to zero-valent silver, to generate silver nanoparticles coated and complexed with both low and high molecular weight polyvinyl pyrrolidone. Polyvinyl pyrrolidone of different molecular weight shows different selective absorption of silver, and different stability makes it affect the speed of growth of silver atoms along different crystal faces to different extent, which is better for silver nano-ring production, with higher yield. Silver nano-rings made from this invention features perfect circular shape, smooth surface, oval cross-section, and great crystal structure, and can be used as transparent flexible conductive material.

Method for preparing silver nano-rings

A flexible conductive film is comprised of a flexible base and a conductive layer coated on it. The flexible base uses Surlyn resin as the matrix. It uses silver nanowire as the conductive layer.

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Shenzhen, China

Shidong Jin