TA Instruments
RSA-G2 DETA
Dielectric Thermal Analysis accessory is a material characterization technique similar to dynamic mechanical analysis except that on oscillation electrical field (AC field) is used in place of a mechanical force (stress) and the oscillation strain is a stored charge (Q) in the sample. Q is measured as its derivative dQ/dt = AC current. DETA measures the degree to which the sample is storing a charge (capacitance) or passing the charge (conductance) through its bulk, which reflects the orientation or mobility of random dipoles. This technique is especially powerful for characterizing polar materials such as PVC, PVDF, PMMA, PVA, and for monitoring curing kinetics of materials such as epoxy and urethane systems. The wide range of frequencies available in DETA (up to 30 MHz) also extends the measurement range far beyond traditional dynamic mechanical analysis.
RSA-G2 DETA
Dielectric Thermal Analysis accessory is a material characterization technique similar to dynamic mechanical analysis except that on oscillation electrical field (AC field) is used in place of a mechanical force (stress) and the oscillation strain is a stored charge (Q) in the sample. Q is measured as its derivative dQ/dt = AC current. DETA measures the degree to which the sample is storing a charge (capacitance) or passing the charge (conductance) through its bulk, which reflects the orientation or mobility of random dipoles. This technique is especially powerful for characterizing polar materials such as PVC, PVDF, PMMA, PVA, and for monitoring curing kinetics of materials such as epoxy and urethane systems. The wide range of frequencies available in DETA (up to 30 MHz) also extends the measurement range far beyond traditional dynamic mechanical analysis.