DMA

Organization: Mikpolis Oy

DMA 242 C

Aapo Nylén
Mobile: +358 40 534 5127Email: aapo.nylen@mamk.fi  

2005

2005

Netzsch DMA 242 C Dynamic Mechanical Analyser

·          Deformation modes: 3-point-bending, single-/dual cantilever bending, shearing, compression/penetration, tension

·          Temperature range: -170°C ... 600°C

·          Heating and cooling rates: 0.01 K/min ... 20 K/min

·          Cooling time: 10 min (20°C ... -150°C)

·          Frequency range: 0.01 Hz ... 100 Hz

·          Controlled force range: max. 8 N static and max. 8 N dynamic

·          Controlled strain amplitude ranges: max. 240 µm

·          Modulus range (E’): 10-3 MPa ... 106 MPa

·          Damping range(tanδ): 0,00006 ... 10

·          Atmospheres: inert, oxidizing, static, dynamic 

 

With Dynamic Mechanical Analysis (DMA) it is possible to make a quantitative determination of the mechanical properties of a sample under an oscillating load and as a function of temperature, time and frequency (DIN 53513, DIN 53440, DIN-IEC 1006, ASTM D 4065, ASTMD 4092, ASTM D 4473, ASTM D 5023, ASTM D 5024, ASTM D 5026, ASTM D 5418). Most materials are both elastic (stiff) and viscous (damping behavior), i.e. they are viscoelastic. Thus they yield to an applied load, partially through viscous flow, with a permanent deformation. At the same time, the mechanical behavior is a function of temperature, time, degree and type of load. Structural transformations (e.g. glass transitions, secondary relaxations, cross-linking) are seen in considerable changes in the thermal and mechanical properties, which are demonstrated with theDMA. The DMA is more sensitive as compared to the DSC (Differential Scanning Calorimetry), especially for the investigation of relaxation processes.Dynamic mechanical analysis provides the user with extensive, practical information:

  • Operable temperature ranges for application and processing (glass transition temperature, onset of softening and brittleness)
  • Design data concerning stiffness and damping properties (modulus values, damping factor)
  • Data on the composition and structure of polymers and polymer blends (compatibility)
  • Curing, Vulcanization
  • Ageing

Mikkeli University of Applied Sciences
Materials technology

Mikkeli

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