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901769

Sigma-Aldrich

Flexible conductive silver paste for screen printing

Synonym(s):

Ag ink, C2080415P2, Conductive ink, Silver ink

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About This Item

UNSPSC Code:
81141502
NACRES:
NA.23

description

Coverage: 250-270 cm2 per g (using a 230 mesh stainless steel screen)
Flash point: 90°C
Solid content: 44-46% (at 130°C)
Volume resistivity: 925 ohm cm at 60°C
527 ohm cm at 130°C

form

paste

hardness

5B (pencil hardness)

viscosity

0.72-1.78 Pa.s (Haake RS1 C20/2° TiL at 230 sec-1 at 25°C)

General description

This product is a thermoplastic screen printing ink, developed for use in membrane touch switch applications as well as counter electrode in electrochemical sensors and conductive tracks. It may be screen printed on to flexible polymeric substrates, such as polyimide, PEN and PET substrates, to create a highly conductive track for general circuitry.

The ink has undergone electrical and mechanical testing which has shown that it is very flexible.

Application

  • Screen-printable silver paste material for semitransparent and flexible metal–semiconductor–metal photodetectors with liquid-phase procedure: This study presents a flexible MSM photodetector using conductive Ag paste electrodes made through a screen-printing liquid-phase process, offering insights into the semitransparency of Ag paste solutions (Tsai et al., 2022).
  • Effect of polymer binder on the transparent conducting electrodes on stretchable film fabricated by screen printing of silver paste: This research examines the role of polymer binders in silver pastes used on flexible polyurethane and polyester films, focusing on rheological properties (Lim et al., 2017).
  • Deposition of high conductivity low silver content materials by screen printing: Investigates novel polymer inks alongside traditional paste materials for their application in both rigid and flexible circuit printing, emphasizing cost-effectiveness and performance (Jewell et al., 2015).
  • Printability of the screen-printed strain sensor with carbon black/silver paste for sensitive wearable electronics: Explores the use of carbon black/Ag nanocomposites in pastes for flexible printed electronic products, enhancing the sensitivity and flexibility of these devices (Qi et al., 2020).
  • High-concentration copper nanoparticles synthesis process for screen-printing conductive paste on flexible substrate: While focusing on copper, this study provides relevant comparisons to silver pastes, detailing formulations suitable for screen-printing on flexible polyester substrates (Tam and Ng, 2015).

Features and Benefits

Product Benefits

Low silver content paste presenting low resistivity, good flexibility and good adhesion on the mentioned substrates

Physical properties

PHYSICAL PROPERTIES PRINTED ON POLYESTER FILM (125μm PET film)

Sheet resistivity: 15-20mΩ/square at 25μm
30-45mΩ/square at 10μm
Bending test: ink survived 3 cycles
(Substrate is creased and bent internally and externally with a 2kg weight.
The test piece has failed when the resistance reaches 10 times the initial value.)
Double curing: aging factor of -0.7%after double curing at 150°C for 15min
How water test: aging factor of -0.2% after boiling for 1hour

Preparation Note

PROCESSING

Please mix well the paste without introducing air bubbles prior to screen printing.
Screen Printing Equipment: semi-automatic, manual
Ink Screen Life: >3 hours
Screen Types: suitable for use with polyester or stainless steel meshes in the range of 156 to 325 tpi.
Typical Drying Conditions: Dry at 130°C - 150°C for 10-30 minutes or on a belt dryer with air flow that sees 130°C-170°C for 5-10 minutes.
Clean Up Solvent: ethoxy propanol or sericol
Substrate: polyimide, PET, PEN and can also be printed on more rigid substrates such as alumina

Legal Information

Product of Gwent Electronic Materials Ltd (GEM), part of Sun Chemical Corporation

pictograms

Environment
GHS09

signalword

Warning

hcodes

H410

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1

Storage Class

10 - Combustible liquids

wgk_germany

WGK 3

flash_point_f

194.0 °F

flash_point_c

90 °C

Certificates of Analysis (COA)

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Seong Man Yoon et al.
Journal of nanoscience and nanotechnology, 13(12), 7844-7849 (2013-11-26)
Flexible thin film super-capacitors with the silver paste current collector were printed and their electrochemical characteristics were investigated to apply for a low cost solution-based printing process. The silver paste current collector was printed on a flexible Polyethylene Telephtalate (PET)

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Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

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