Ueshima - Model VR-7130 -Fully Automatic DMA System
VR-7130 Automatic DMA was designed to minimize possible causes of measurement errors and variability by adopting the full automatic system and the unique temperature sensor. In combination with THERMO JETTER, it can measure viscoelasticity down to -90°C (-100°C as an option) without using liquid nitrogen.
A high-polymer material is a viscoelastic material, unlike elastic materials such as metals. In the case of elastic body, strain (response) comes up simultaneously to the given force (input). On the contrary, in case of a high polymer material, time lag will occur between input and response. These relations are different by the sample components and also dependent on temperature, velocity and strain. High polymer materials are used for various uses in various fields by using such characteristics.
As these properties are mainly treated as material properties, response to very minute input (force or strain) will be mainly measured. (Strain is measured to force or force to strain.) The VR-7130 has minimized possibility of human errors and realized excellent precision in viscoelasticity measurement of high-polymer materials.
- Possible to load 100 max. samples automatically
- Sample chucking, measurement and discharge are automated, thus minimizing human errors.
- The temperature difference between the sample and the measurement point was solved by using a thermocouple with a rubber coating of the same thickness as the sample and adopting the step temperature control method.
- In the measurement of viscoelasticity, minute deformations such as several μm to several tens of μm are measured, so the rigidity (deflection) of each component affects the test results. The DMA adopts a piezoelectric load cell to minimize deflection of the load cell itself, realizing more precise load measurement.
- The compact body minimizes the influence of resonance and realizes accurate measurements within the measurement frequency of 0.1 to 200Hz (except for the character frequency of the sample).
- Thermo Jetter cooling system enables measurement at low temperature down to -90°C(-100 °C as an option) without using liquid nitrogen
- Direct calculation of the phase realizes improve measurement accuracy.
- Master curve is available optionally.
- Frequency: 0.1 to 200Hz (Variable)
- Maximum load: 200N (with Load cell ±450N)