Rheology

Rheological measurements – Rheology is the study of flow and deformation of materials. Deformation and flow are referred to as strain or strain rate, respectively, and indicate the distance over which a body moves under the influence of an external force, or stress. For this reason, rheology is also considered to be the study of stress-strain relationships in materials.

What types of measurements can I perform with a Rheometer?

• Viscosity as function of shear rate or stress, time & temperature

• Viscoelastic properties to include Shear Modulus (G’), Shear Loss Modulus (G”), and Tan Delta (δ) with respect to time, temperature, frequency and stress/strain.

• Creep and Stress Relaxation measure viscoelastic properties of compliance and relaxation modulus.

• Minimum Viscosity

• Gel Point (Time/Temperature)

• Cure Profile

• Effect of Fillers and Modifiers

• Flowability

• Stability/Shelf Life

• Phase Separations