TA rotational rheometer Discovery

Rheology is the study of the flow and deformation of materials under the influence of external forces or stresses. The combination of stress, strain, and shear characteristics forms the basis of rheology, which is the science of material deformation. Rheological measurement is used to ensure material processing, optimize product performance, gain in-depth understanding of complex microstructures, and develop new materials.

A rheometer is a high-precision instrument that measures flow and deformation by applying external force to a sample and measuring the resulting stress or strain, thereby achieving viscosity and modulus measurements. With rheometer, viscosity measurement is far beyond the limit of traditional viscometer, and can characterize the shear thinning, thixotropy, yield stress and other non Newtonian properties of complex fluids (lotion, suspension, paint, ink, paint, slurry). Oscillatory rheology measures the viscoelasticity (storage modulus, loss modulus, loss tangent) of various materials ranging from low viscosity fluids to high hardness solids using Dynamic Mechanical Analysis (DMA) mode.

TA Instrument's new Discovery hybrid rheometer hasexcellentPerformance, usability, and versatility. Whether rheological measurements require controlled stress, strain, or velocity, stable shear or oscillation, rotation, tension, compression, or tensile deformation, DHR is the primary product of choice for laboratories.

Performance: Accurate and precise rheological data begins with basic measurements of torque (stress) and displacement (strain). The precise torque sensitivity of Dissovery HR is attributed to the excellent performance of magnetic bearings, which can reduce friction by more than 70% (compared to air bearings), thereby achieving accurate low stress measurements (such as yield stress and zero shear viscosity). Thanks to the high-precision optical encoder dual readers, Discovery HR provides precise displacement resolution for measuring shear rates and small amplitude oscillatory strains.

Easy to use: The new Discovery hybrid rheometer is designed to provide every operator with the most accurate rheological data. User centered features such as integrated sample lighting and intuitive touch screens make sample loading simple and repeatable. TRIOS Express software simplifies the testing methods for routine testing, while TRIOS Unlimited provides complete customization features to achieve advanced characterization.

Multifunctionality: With the extensive rheological accessory combination of Discovery HR, the rheometer can be configured for various experimental needs. The SmartSwap 2TM geometric structure and accessories can be installed and automatically recognized in seconds, making it ideal for laboratories that support constantly expanding material ranges and testing requirements. Learn more about Discovery Hybrid Rheometer accessories.

Test Standard

ASTM D4092- Standard Terminology for Plastics: Dynamic Mechanical Properties

ASTM D4440- Standard Test Method for Plastics: Dynamic Mechanical Properties Melt Rheology

ASTM D4473- Standard Test Method for Plastics: Dynamic Mechanical Properties: Curing Behavior

ASTM D5279- Standard Test Method for Plastics: Dynamic Mechanical Properties: Torsion