DYNAMIC MECHANICAL ANALYSIS (DMA)

What is DMA?

DMA provides valuable data for characterizing the properties of materials, particularly polymers.  DMA measures the amplitude and phase of the displacement of a sample in response to an applied oscillating force.  The stiffness of the sample is calculated from this data and converted to a modulus to enable sample inter-comparisons. Tan d, the loss tangent or damping factor, is also calculated.  A temperature scan at constant frequency can generate a fingerprint of the material's relaxational processes and its glass transition temperature (Tg).  This technique provides valuable data on polymer structure.

Acsion's Capabilities                                                                                               State-of-the-Art Model 2980 DMAfrom TA Instruments

• Analysis of resins used in advanced composites
• Screening of adhesives for aerospace and automotive applications
• Analysis of conditioning or aging effects on dynamic mechanical properties                                          
• Analysis of thermoplastics

Customer Benefits

• Most sensitive method for measuring Tg
• Useful in engineering calculations and specifications
• Provides data often required as a user specification
• Rapid turnaround time
• Flexible pricing
• Small sample size, typically 1-2 g
• Sample pre-conditioning and/or data interpretation available upon request

Applications

• Analysis of resin and adhesive cure
• Determination of the degree of crosslinking in plastics
• Analysis of polymers
• Analysis of a wide variety of materials used in healthcare, food, and other applications