Preparation method of transparent electro-conductive nano silver wire printing ink and transparent electro-conductive membrane

Abstract

The invention discloses a transparent electro-conductive nano silver wire printing ink that can be painted to form a single layer. The printing ink is composed of the following components in parts by weight: 10 parts of poly(3,4-ethylenedioxy thiophene)-poly(styrene sulfonic acid), 1 to 2 parts of stabilizing agent, 100 parts of surfactant, 0 to 15 parts of mixed solvent, and 50 to 200 parts of deionized water, wherein in poly(3,4-ethylenedioxy thiophene)-poly(styrene sulfonic acid), the weight ratio of poly(3,4-ethylenedioxy thiophene) to poly(styrene sulfonic acid) is 1:(2-8). The printing ink is evenly painted on a soft transparent substrate, then the printing ink is dried, the wet membrane thickness of the printing ink layer is 8 to 15 millimeters, and then the soft transparent substrate covered by the printing ink is sintered for 5 minutes at a temperature of 160 DEG C so as to obtain the soft transparent electro-conductive membrane, which has the advantages of low sheet resistance and high transparency.

Description

technical field [0001] The invention relates to the field of nano wires, in particular to a single-layer coating transparent conductive nano silver wire ink and a method for preparing a transparent conductive film. Background technique [0002] Transparent conductive film is a kind of film that can conduct electricity and has high transparency in the visible light range, mainly including metal film system, oxide film system, other compound film system, polymer film system, composite film system, etc. The metal film system has good electrical conductivity, but poor transparency. The semiconductor film series is just the opposite, with poor conductivity and high transparency. [0003] ITO is currently the most widely used transparent electrode material, used in flat panel display, touch screen, PDP display and related technologies. But the material is brittle, requires high temperatures, and is expensive, mainly because it needs to grow scarce indium on the surface. It is d...

AI Technical Summary

Problems solved by technology

[0004] At present, the preparation technology of nano-silver wire transparent conductive ink either adopts a primer first, then presses the nano-silver wire layer, and then uses top coating protection, or directly presses the nano-silver wire layer, and then uses top-coating for protection. The advanced technology makes the process more complicated, and at the same time greatly increases the production cost, and after the top coating protective layer is coated, when the subsequent printing drainage strip and the nano-silver wire layer are overlapped, the resistance of the junction is increased, making defective products Greatly increased; some people also use other polymer resins as connecting materials with nano-silver wire configuration, but because general polymer resins are non-conductive, the final conductive coating has too much square resistance and cannot meet the process requirements

Images