High Viscosity Conductive Inks

A complete rheological study on the shear and extensional viscosity of thick conductive inks

Viscosity is a key parameter affecting quality and performance of printed electronics and display systems. In this application note, we present a complete rheological study (shear viscosity, temperature dependence and extensional viscosity) of a carbon-water based high viscosity ink or paint. 

VROC^® technology offers a number of advantages over conventional viscometers and rheometers including: 

• Wide Dynamic Range:
  
  • Shear Viscosity: 0.2 - 200,000 [mPa-s]
  • Shear Rate: 0.5 - 1,400,000 [1/s]
  • Extensional Viscosity: 0.04 - 100 [Pa-s]
  • Extensional Rate: 1 - 10,000 [1/s]
• Temperature Control: 4 - 125ºC
• Superior Accuracy (2% of Reading) and Repeatability (0.5% of Reading)
• Lowest Sample Volume Required
• No Air-Liquid Interface (No Evaporation or Contamination) 

If you want to learn more, do not forget to check out our studies on the viscosity of other conductive inks: