| | | The versatility of the DMA 242 C can be seen in the variety of sample holders. Thus, depending on the type and consistency of your samples, you can carry out precise investigations of viscoelastic properties covering a wide modulus range of 103 MPa to 106 MPa. • Polymers thermoplastics thermosets elastomers composites lacquers and coatings adhesives fibers and films pastes biopolymers • Pharmaceuticals • Food • Ceramic Materials • Glasses • Metals | | The frequency range of 0.01 Hz to 100 Hz includes up to 25 fixed frequencies, which can be selected individually or in any combination (multiple frequency). The maximum force is 16 N - i.e. 8 N dynamic and 8 N static. The deformation amplitude (approx. 0.1 urn to 240 urn) as well as the sample position are controlled independently of one another. Thereby, constant contact between the push rod and the sample is guaranteed, even when the material softens greatly. This is imperative for the study of polymers, because the storage modulus frequently changes by several orders of magnitude during a measurement. The patented displacement sensor (DE 4309530C2) with the new automatic ranging feature always guarantees the highest resolution of the deformation amplitude up to 0.5 nm. | | |
| | | Tests run in the temperature range from -170°C to 600°C provide you with important data on your material. Dynamic, isothermal and step-wise temperature control make it possible to design flexible temperature programs suited to your particular problem. The sample is subjected to a defined, forced oscillation. A sinusoidal force (input signal) affects a deformation of the viscoelastic sample (output signal). This also produces sinusoidal, but phase-shifted, oscillation which is then recorded. These oscillations are reduced to a signal of extremely low noise level in the DMA controller by means of FOURIER Analysis. | | |