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Solvent Ink Containing Silver Nanoparticles

A technology of silver nanoparticles and metal nanoparticles, which can be used in inks, coatings, fibrous fillers, etc., to solve problems such as restricting the use of inks

Inactive Publication Date: 2016-05-11
XEROX CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Deposition of conductive metal lines exhibiting a coffee ring effect and / or overly wide may limit the use of the ink in certain applications

Method used

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  • Solvent Ink Containing Silver Nanoparticles
  • Solvent Ink Containing Silver Nanoparticles
  • Solvent Ink Containing Silver Nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] High throughput silver nanoparticles with a silver content of about 90 wt% were used in the examples. The examples were evaluated on the premise that if an ink formulation could sustain a variation of silver nanoparticles with a silver content of 90 wt%, the formulation should be reliable from batch to batch. Silver nanoparticles were prepared as previously disclosed in US Patent No. 7,494,608 (incorporated herein by reference) with a molar ratio of cetylamine to silver acetate of 5:1.

[0058] Three different inks were prepared using silver nanoparticles in different solvents or solvent mixtures. Inks were prepared by loading 50 wt% silver nanoparticles in a solvent or solvent mixture and shaking the silver nanoparticles overnight (approximately 16 hours) in the solvent or solvent mixture. The three solvents used for the three inks described were decahydronaphthalene, dicyclohexane, and a mixture of decahydronaphthalene / bicyclohexane (1:1 by weight) (from Sigma-Aldric...

Embodiment 2

[0063] To further improve the adhesion of printed silver lines, terpene resin (from Arizona Chemicals (Jacksonville, Florida)) was added to the ink formulation at 1.2 wt%. The formulation of this ink is shown in Table 2.

[0064] Table 2

[0065] ink components

[0066] silver nanoparticles

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Abstract

The present invention provides highly efficient nanoparticle compositions suitable for printing, such as by inkjet printing. Specifically, a conductive ink formulation comprising silver nanoparticles is provided that exhibits optimal properties such as reduced coffee ring effect, improved adhesion to substrates, and extended printhead decap time or latency . The ink formulation contains two or more solvents and a resin.

Description

technical field [0001] Disclosed herein, in various embodiments, are stable, high performance nanoparticle compositions suitable for printing, such as by inkjet printing. In particular, a conductive ink formulation comprising silver nanoparticles is provided that has optimal properties such as reduced coffee ring effect, improved adhesion to substrates, and prolonged drying at the print head time. Background technique [0002] The benefits of silver nanoparticle technology for printed electronics applications have recently been discovered. For example, ink formulations containing silver nanoparticles have demonstrated excellent printing results. However, the irreproducibility of printing performance remains a problem due to the batch-to-batch variation of silver nanoparticle powders, especially those prepared in large quantities. The main difference is the silver content. Specifically, for some batches of silver nanoparticles with a silver content of 90 wt% (which is the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/52C09D11/36
CPCC09D11/36C09D11/52C09D11/322C09D7/20C09D7/68C09D17/00C09C1/62C09C3/08
Inventor 吴贻良J·埃利亚胡柳平胡南星
Owner XEROX CORP
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