Rheometer

AMI has a TA Instruments Discovery HR-2 Hybrid Rheometer.

Rheology is the study of flow and deformation of materials under the influence of an external force or stress. The combination of stress, strain and shear behavior forms the basis of rheology, the science of the deformation of materials. Our HR-2 is able to measure both viscosity and viscoelasticity of fluids and soft-solids.

Applications:

• Viscosity of high viscosity liquids, pastes, and polymer solutions and melts
  
• Viscosity of LED encapsulant, solder paste, flux, underfill, die-attach adhesive, glob top encapsulant, etc for electronic packaging industry
  
• Curing profile of thermoset plastics and UV-curing adhesives and encapsulant
  
• Rheology of polymers
  
• Viscoelasticity of polymers

Specifications
Minimum Torque Oscillation	2 nN.m
Minimum Torque Steady Shear	10 nN.m
Maximum Torque	200 mN.m
Torque Resolution	0.1 nN.m
Minimum Frequency range	1.0E-07 - 100 (Hz)
Angular Velocity range	0 - 300 (rad/s)
Normal Force range	0.005 - 50 N
Temperature range	Ambient to 600°C

 

Typical methods include:

• ASTM D4092
• ASTM D4440
• ASTM D4473
• ASTM D5279