Thermal Expansion of PUR Foams

PUR foam exhibits an insignificant level of anisotropic behavior which is shown by the dilatometer measurement. The CTE values are nearly the same in the y- and z-directions between -160°C and 100°C. An additional measurement was performed in each direction; the results also demonstrate the excellent reproducibility of the dilatometer DIL 402 C.

Thermal expansion and CTE values of PUR foamThermal expansion and CTE values of PUR foam
DIL 402 C - Vacuum-tight, horizontal pushrod dilatometer

This highly vacuum-tight, horizontal push rod dilatometer with a measuring system made of Invar, a high-resolution inductive displacement transducer and comprehensive thermostatization offers high precision, reproducibility and long-term stability – the best qualifications for demanding use in research and development.