DMA explained
A SEIKO Dynamic mechanical spectrometer Extar 6100 is available to you at Senbis Polymer Innovations. The DMA can be used for research on the viscoelastic behavior of polymer specimen. The DMA is able to apply a defined oscillatory force to a test specimen, the strain or displacement is subsequently measured.
Typical parameters that can be determined are:
- Storage modulus (E’) - elastic part
- Loss modulus (E") - viscous part
- Shear storage (G') and shear loss (G") moduli
- Tan δ
- Tg (glass transition temperature)
Specifications
| Deformation modes | Bending | Tension | Shear | Compression |
| Measurement modes | Dynamic and static | |||
| Frequency | 0,01-200Hz (max 13 frequencies) | |||
| Measurement range | 1 MPa 1000 GPa | 1 MPa 1000 GPa | 0.01 MPa 1 GPa | 1 MPa 1000 GPa |
| Temperature range | -150°C – 600 °C | |||
| Scan rate | 0.01 – 20 °C/min | |||
| Force range | Static: 9.8 N | Dynamic: 7.8 N | |||
ASTM standards
| D4065 | Standard Practice for Plastics: Dynamic Mechanical Properties: Determination and Report of Procedures |
| D4440 | Standard Test Method for Plastics: Dynamic Mechanical Properties Melt Rheology |
| D5279 | Standard Test Method for Plastics: Dynamic Mechanical Properties: In Torsion |
| D5024 | Standard Test Method for Plastics: Dynamic Mechanical Properties: In Compression |
| D5026 | Standard Test Method for Plastics: Dynamic Mechanical Properties: In Tension |
| E1640 | Standard Test Method for Assignment of the Glass Transition Temperature By Dynamic Mechanical Analysis |
