Dynamic Mechanical Analysis - DMA 242 C

DMA 242 C - significantand dependable informa- tion for With D ynamic M echanical transformations (e.g. glass transitions, secondary relaxa-tions, cross-linking) are seenin considerable changes in the thermal and mechanical properties, which aredemonstrated with the DMA. The DMA is more sen-sitive as compared to the DSC (Differential ScanningCalorimetry), especially forthe investigation of relaxa- tion processes.Dynamic mechanical analysisprovides the user with exten-sive, practical information:•Operable temperature ranges for application and processing (glass transitiontemperature, onset of softening and brittleness) •Design data concerning stiffness and damping properties (modulus values, damping factor)•Data on the compositionand structure of polymers and polymer blends (compatibility)•Curing, Vulcanization•Ageing A nalysis ( DMA ) it is possibleto make a quantitative deter-mination of the mechanical properties of a sample under an oscillating load and as afunction of temperature, time and frequency (DIN53513, DIN53440, DIN-IEC1006, ASTM D 4065, ASTMD 4092, ASTM D 4473,ASTMD 5023, ASTM D 5024, ASTMD 5026, ASTM D 5418) viscoelastic . Thus they yieldto an applied load, partially through viscous flow, with a permanent deformation. At the same time, the mechani- cal behavior is a function of temperature, time, degree and type of load. Structural .Most materials are both elas- tic (stiff) and viscous (damp- ing behavior), i.e. they are research and development quality control quality assurance failure analysis DMA 242 C2