Instrument: Perkin Elmer Pyris Diamond Dynamic Mechanical Analyzer (DMA)

When a load is applied to a material, it deforms. If the material is an ideally elastic material, the deformation disappears when the load is removed. Elastic deformation occurs in direct proportion to the applied load and without delay. But in some materials, such as polymers, the deformation is non-linear and takes place with a delay. The opposite of elastic behavior is viscous behavior. In an ideal viscous material, the rate of deformation is directly proportional to the load. Some materials, such as polymers, exhibit both elastic and viscous behavior, and such materials are called viscoelastic materials.

DMA measures the viscoelastic properties of materials by using a load motor that increases and decreases at a specified frequency on the materials. The high precision LVDT sensor determines the relative position of the bar on the sample. The dynamic viscoelastic properties of materials, for example E' and E'', can be calculated from the values ​​of σ0, ∈0 and δ on the stress and strain waveforms.

Specification

Fourier transform. Synthetic oscillation, SS/Flow/Stress Relaxation, Time temperature super position, Activation energy, Automatic liquid nitrogen cooling.

Sample Requirements

Applications

Glass transition temperature.