Dynamic Mechanical Analysis
Studying a polymer's reaction to the application of a force can provide details on the material's flow characteristics, modulus and elasticity, to name a few. All properties can help scientists and engineers with the selection of the right material for the application.
Dynamic Mechanical Analysis (DMA) measures the mechanical properties of a rubber or polymeric material as a function of temperature, time, frequency, stress or a combination of these parameters.
DMA analysis is particularly useful for thin films, pastes, adhesives and powdered materials. The most common testing conducted by our laboratories includes the testing of vulcanized rubber specimens mixed in the laboratory or excised from actual products,.
The usual outputs of DMA are Elastic (E') and Viscous (E'') moduli. The ratio of the E'' to the E' is the tan delta and is often called damping, which is a measure of the energy dissipation of a material. The tan delta can also be used to determine the glass transition temperature (Tg) of a material.
Our DMA device that has;
- A calibrated temperature range of between -150°C and 300°C
- Heating rates from 1°C to 20°C /min
- Frequency oscillation ranges between 0.012 Hz to 150Hz
We are capable of reporting Storage modulus, loss modulus, complex modulus, tangent delta
The following are common analyses that we conduct on a regular basis:
- Testing of vulcanized rubber specimens mixed in the laboratory or excised from actual products
- Frequency sweeps, temperature sweeps or strain sweeps
- Storage modulus, loss modulus, complex modulus, tangent delta
Please contact us to discuss your needs, for more information or to request a quote.
Common Test Protocols
Flex Fatigue in Compression Testing - This test method can be used to evaluate fatigue properties and heat generation in rubber as the sample is exposed to compression strains.