Anton Paar's PentaFoam 5200e Gas Pycnometer is designed specifically for the characterization of foams.
The cell type of porous materials correlates with performance attributes such as fluid exclusion, strength, and insulating properties. Thermal insulation, resilience, water-resistance, and buoyancy are imparted by closed cells, and properties related to acoustics, wicking, and filtration are related to open cells.
The PentaFoam 5200e pycnometer uses the standard technique of gas expansion from a calibrated sample chamber to a reference volume. The closed and solid cell volume of the sample is determined from the relationship of the calibrated cell volumes and the pressures after and before expansion. The closed-cell percentage is determined from the solid volume and the measured geometric volume of a rectangular or cylindrical sample. Open-cell % is calculated by difference (100%-open-cell % = closed-cell %). Density is calculated from the mass (weight)/volume and is reported as grams/cc.
The PentaFoam 5200e conforms to ASTM D6226 "Standard Test Method for Open Cell Content of Rigid Cellular Plastics."
The key features of the PentaFoam 5200e are:
- Correction for Cut Cells - A corrected percentage of open cells is determined by remeasuring the volume of a cube after sectioning into eight sections. The UltraFoam and PentaFoam pycnometer programming offer a convenient way to automate this calculation. The report gives both the (uncorrected) Open Cell% and the Corrected Open Cell% values.
- Cell Compressibility – The measuring pressure is automatically increased stepwise and the resulting series of compression% data determines compression profile characteristics for quality control and if there is an optimum pressure for highly accurate open cell% and closed cell% readings.
- Cell Fracture – The foam pycnometers have an essential analytical ability for rigid foams that have fragile cell walls. In this mode, each step of increasing pressure is tested to see if the pressure change caused a permanent decrease in Closed Cell%.
This product is a former Quantachrome product. On February 9, 2018, Anton Paar acquired Quantachrome. Under the umbrella of the Anton Paar Group, the company will continue operations in Boynton Beach. Quantachrome is the first manufacturing facility in North America run by Anton Paar and will also function as a US-based unit for research, development, and production within the Anton Paar Group.